Merge branch 'development' into feature/new-improved-database-system

# Conflicts:
#	Core/pom.xml
#	Core/src/main/java/com/craftaro/core/SongodaPlugin.java

.github/actions/setup_project_workspace/action.yml

@@ -19,5 +19,5 @@ runs:
 
     - uses: SpraxDev/Action-SpigotMC@v4
       with:
-        versions: 1.18.1, 1.18.2, 1.19, 1.19.2, 1.19.3, 1.19.4, 1.20
+        versions: 1.18.1, 1.18.2, 1.19, 1.19.2, 1.19.3, 1.19.4, 1.20.1
         remapped: true

.github/workflows/build.yml

@@ -45,6 +45,7 @@ jobs:
           append_snapshot: ${{ github.ref_type == 'tag' && 'false' || 'true' }}
           version: ${{ github.ref_type == 'tag' && github.ref_name || '' }}
           increment_version: ${{ github.ref_type == 'tag' && '' || 'patch' }}
+          increment_version_only_if_not_snapshot_version: ${{ github.ref == 'refs/heads/development' && 'true' || 'false' }}
 
       - name: Build with Maven
         run: mvn -B -Duser.name="GitHub Actions on $GITHUB_REPOSITORY (id=$GITHUB_RUN_ID)" -DskipTests clean package

Compatibility/pom.xml

@@ -12,6 +12,13 @@
     </parent>
     <artifactId>CraftaroCore-Compatibility</artifactId>
 
+    <repositories>
+        <repository>
+            <id>ViaVersion</id>
+            <url>https://repo.viaversion.com/</url>
+        </repository>
+    </repositories>
+
     <dependencies>
         <dependency>
             <groupId>org.spigotmc</groupId>
@@ -23,7 +30,7 @@
         <dependency>
             <groupId>com.viaversion</groupId>
             <artifactId>viaversion-api</artifactId>
-            <version>4.0.1</version>
+            <version>4.7.0</version>
             <scope>provided</scope>
         </dependency>
 
@@ -33,5 +40,12 @@
             <version>4.29</version>
             <scope>provided</scope>
         </dependency>
+
+        <dependency>
+            <groupId>com.github.cryptomorin</groupId>
+            <artifactId>XSeries</artifactId>
+            <version>9.4.0</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 </project>

Compatibility/src/main/java/com/craftaro/core/compatibility/ClassMapping.java

@@ -58,8 +58,8 @@ public enum ClassMapping {
     private final String packageName;
     private final String className;
 
-    ClassMapping(String packageName) {
+    ClassMapping(String className) {
-        this(null, packageName);
+        this(null, className);
     }
 
     ClassMapping(String packageName, String className) {
@@ -72,17 +72,17 @@ public enum ClassMapping {
     }
 
     public Class<?> getClazz(String sub) {
-        String name = sub == null ? className : className + "$" + sub;
+        String name = sub == null ? this.className : this.className + "$" + sub;
 
         try {
-            if (className.startsWith("Craft")) {
+            if (this.className.startsWith("Craft")) {
                 return Class.forName("org.bukkit.craftbukkit." + ServerVersion.getServerVersionString()
-                        + (packageName == null ? "" : "." + packageName) + "." + name);
+                        + (this.packageName == null ? "" : "." + this.packageName) + "." + name);
             }
 
             return Class.forName("net.minecraft." + (
-                    ServerVersion.isServerVersionAtLeast(ServerVersion.V1_17) && packageName != null
+                    ServerVersion.isServerVersionAtLeast(ServerVersion.V1_17) && this.packageName != null
-                            ? packageName : "server." + ServerVersion.getServerVersionString()) + "." + name);
+                            ? this.packageName : "server." + ServerVersion.getServerVersionString()) + "." + name);
         } catch (ClassNotFoundException ex) {
             ex.printStackTrace();
         }

Compatibility/src/main/java/com/craftaro/core/compatibility/ClientVersion.java

@@ -13,7 +13,7 @@ import java.util.UUID;
  * NOTE: this is automatically initialized through SongodaCore
  */
 public class ClientVersion {
-    static HashMap<UUID, ServerVersion> players = new HashMap<>();
+    private static final HashMap<UUID, ServerVersion> players = new HashMap<>();
 
     /**
      * Check to see what client version this player is connected to the server
@@ -103,9 +103,19 @@ public class ClientVersion {
             case 755:
             case 756:
                 return ServerVersion.V1_17;
+            case 757:
+            case 758:
+                return ServerVersion.V1_18;
+            case 759:
+            case 760:
+            case 761:
+            case 762:
+                return ServerVersion.V1_19;
+            case 763:
+                return ServerVersion.V1_20;
 
             default:
-                return version > 756 ? ServerVersion.getServerVersion() : ServerVersion.UNKNOWN;
+                return version > 763 ? ServerVersion.getServerVersion() : ServerVersion.UNKNOWN;
         }
     }
 

Compatibility/src/main/java/com/craftaro/core/compatibility/CompatibleBiome.java

@@ -165,7 +165,7 @@ public enum CompatibleBiome {
     }
 
     CompatibleBiome() {
-        versions.add(v(ServerVersion.UNKNOWN, name()));
+        this.versions.add(v(ServerVersion.UNKNOWN, name()));
     }
 
     CompatibleBiome(ServerVersion version, Version... versions) {
@@ -178,12 +178,12 @@ public enum CompatibleBiome {
     }
 
     public List<Version> getVersions() {
-        return new LinkedList<>(versions);
+        return new LinkedList<>(this.versions);
     }
 
     public Biome getBiome() {
         try {
-            for (Version version : versions) {
+            for (Version version : this.versions) {
                 if (ServerVersion.isServerVersionAtLeast(version.version)) {
                     return Biome.valueOf(version.biome);
                 }

Compatibility/src/main/java/com/craftaro/core/compatibility/CompatibleHand.java

@@ -1,6 +1,7 @@
 package com.craftaro.core.compatibility;
 
-import org.bukkit.entity.Player;
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.inventory.EntityEquipment;
 import org.bukkit.inventory.EquipmentSlot;
 import org.bukkit.inventory.ItemStack;
 
@@ -46,62 +47,66 @@ public enum CompatibleHand {
     }
 
     /**
-     * Use up whatever item the player is holding in their main hand
+     * Use up whatever item the player is holding in their hand
      *
-     * @param player player to grab item from
+     * @param entity entity to grab item from
      */
-    public void takeItem(Player player) {
+    public void takeItem(LivingEntity entity) {
-        takeItem(player, 1);
+        takeItem(entity, 1);
     }
 
     /**
-     * Use up whatever item the player is holding in their main hand
+     * Use up whatever item the player is holding in their hand
      *
-     * @param player player to grab item from
+     * @param entity entity to grab item from
      * @param amount number of items to use up
      */
-    public void takeItem(Player player, int amount) {
+    public void takeItem(LivingEntity entity, int amount) {
         ItemStack item = this == CompatibleHand.MAIN_HAND
-                ? player.getInventory().getItemInHand() : player.getInventory().getItemInOffHand();
+                ? entity.getEquipment().getItemInHand() : entity.getEquipment().getItemInOffHand();
 
         int result = item.getAmount() - amount;
         item.setAmount(result);
 
         if (this == CompatibleHand.MAIN_HAND) {
-            player.setItemInHand(result > 0 ? item : null);
+            entity.getEquipment().setItemInHand(result > 0 ? item : null);
             return;
         }
 
-        player.getInventory().setItemInOffHand(result > 0 ? item : null);
+        entity.getEquipment().setItemInOffHand(result > 0 ? item : null);
     }
 
     /**
      * Get item in the selected hand
      *
-     * @param player the player to get the item from
+     * @param entity The entity to get the item from
      *
-     * @return the item
+     * @return The item or null
      */
-    public ItemStack getItem(Player player) {
+    public ItemStack getItem(LivingEntity entity) {
-        if (this == MAIN_HAND) {
+        EntityEquipment equipment = entity.getEquipment();
-            return player.getItemInHand();
+        if (equipment == null) {
+            return null;
         }
 
-        return player.getInventory().getItemInOffHand();
+        if (this == MAIN_HAND) {
+            return equipment.getItemInMainHand();
+        }
+        return equipment.getItemInOffHand();
     }
 
     /**
      * Set the item in the selected hand
      *
-     * @param player the player to set the item of
+     * @param entity The entity to set the item of
-     * @param item   the item to set
+     * @param item   The item to set
      */
-    public void setItem(Player player, ItemStack item) {
+    public void setItem(LivingEntity entity, ItemStack item) {
         if (this == MAIN_HAND) {
-            player.setItemInHand(item);
+            entity.getEquipment().setItemInHand(item);
             return;
         }
 
-        player.getInventory().setItemInOffHand(item);
+        entity.getEquipment().setItemInOffHand(item);
     }
 }

Compatibility/src/main/java/com/craftaro/core/compatibility/CompatibleParticleHandler.java

@@ -124,7 +124,7 @@ public class CompatibleParticleHandler {
         final boolean compatibilityMode;
         final LegacyParticleEffects.Type compatibleEffect;
         final Object particle;
-        final static Map<String, ParticleType> map = new HashMap<>();
+        static final Map<String, ParticleType> map = new HashMap<>();
 
         static {
             for (ParticleType t : values()) {

Compatibility/src/main/java/com/craftaro/core/compatibility/CompatibleSound.java

@@ -1,5 +1,6 @@
 package com.craftaro.core.compatibility;
 
+import com.cryptomorin.xseries.XSound;
 import org.bukkit.Location;
 import org.bukkit.Sound;
 import org.bukkit.World;
@@ -7,7 +8,6 @@ import org.bukkit.entity.Player;
 
 /**
  * TODO: Probably recode to be similar to CompatibleMaterial
- *
  * Sounds that are compatible with server versions 1.7+ <br>
  * TODO: This needs work.
  * Finished 1.8, finished 1.9 blocks, resume with 1.9 entities<br>
@@ -15,7 +15,10 @@ import org.bukkit.entity.Player;
  * sounds were renamed. New sounds have been added by different versions, as
  * well. The intent of this class is to provide either the correct sound or a
  * near equivalent for the current server.
+ *
+ * @deprecated Use {@link XSound} instead.
  */
+@Deprecated
 public enum CompatibleSound {
     // some of these values are missing an API value...
     // would using the raw strings be better?
@@ -1358,19 +1361,19 @@ public enum CompatibleSound {
         if (DEBUG && find == null) {
             System.err.println("Sound for " + name() + " not found!");
         }
-        sound = find;
+        this.sound = find;
-        compatibilityMode = find == null;
+        this.compatibilityMode = find == null;
     }
 
     // if the sound only ever changed from 1.8 -> 1.9
     CompatibleSound(String compatibility_18) {
         try {
-            compatibilityMode = false;
+            this.compatibilityMode = false;
 
             if (ServerVersion.isServerVersionBelow(ServerVersion.V1_9)) {
-                sound = Sound.valueOf(compatibility_18);
+                this.sound = Sound.valueOf(compatibility_18);
             } else {
-                sound = Sound.valueOf(name());
+                this.sound = Sound.valueOf(name());
             }
         } catch (Exception ex) {
             System.err.println("ERROR loading " + name());
@@ -1382,8 +1385,8 @@ public enum CompatibleSound {
         try {
             for (Version v : versions) {
                 if (v.sound != null && ServerVersion.isServerVersionAtLeast(v.version)) {
-                    sound = Sound.valueOf(v.sound);
+                    this.sound = Sound.valueOf(v.sound);
-                    compatibilityMode = v.compatibilityMode;
+                    this.compatibilityMode = v.compatibilityMode;
                     return;
                 }
             }
@@ -1404,28 +1407,28 @@ public enum CompatibleSound {
             }
         }
 
-        sound = find;
+        this.sound = find;
-        compatibilityMode = find == null;
+        this.compatibilityMode = find == null;
     }
 
     CompatibleSound(ServerVersion minVersion, Version... versions) {
         try {
             if (ServerVersion.isServerVersionAtLeast(minVersion)) {
                 // should be good to use this sound
-                sound = Sound.valueOf(name());
+                this.sound = Sound.valueOf(name());
             } else {
                 for (Version v : versions) {
                     if (v.sound != null && ServerVersion.isServerVersionAtLeast(v.version)) {
-                        sound = Sound.valueOf(v.sound);
+                        this.sound = Sound.valueOf(v.sound);
-                        compatibilityMode = v.compatibilityMode;
+                        this.compatibilityMode = v.compatibilityMode;
                         return;
                     }
                 }
 
-                sound = null;
+                this.sound = null;
             }
 
-            compatibilityMode = false;
+            this.compatibilityMode = false;
         } catch (Exception ex) {
             System.err.println("ERROR loading " + name() + " (" + minVersion + ")");
             for (Version v : versions) {
@@ -1443,7 +1446,7 @@ public enum CompatibleSound {
      * @return Either the matching sound or a similar sound
      */
     public Sound getSound() {
-        return sound != null ? sound : UI_BUTTON_CLICK.sound;
+        return this.sound != null ? this.sound : UI_BUTTON_CLICK.sound;
     }
 
     /**
@@ -1507,7 +1510,7 @@ public enum CompatibleSound {
      * @return Returns false if we are using a different sound.
      */
     public boolean usesCompatibility() {
-        return !compatibilityMode;
+        return !this.compatibilityMode;
     }
 
     private static Version v(String sound) {

Compatibility/src/main/java/com/craftaro/core/compatibility/LegacyMaterialAnalouge.java

@@ -809,41 +809,41 @@ public enum LegacyMaterialAnalouge {
         this.compatibleData = compatData;
 
         if (ServerVersion.isServerVersionBelow(versionLessThan)) {
-            if (legacyMinimumVersion != null && ServerVersion.isServerVersionBelow(legacyMinimumVersion)) {
+            if (this.legacyMinimumVersion != null && ServerVersion.isServerVersionBelow(this.legacyMinimumVersion)) {
                 // fallback material not available, so use its fallback
-                material = Material.getMaterial(compatibleMaterial);
+                this.material = Material.getMaterial(this.compatibleMaterial);
-                data = compatibleData;
+                this.data = this.compatibleData;
-            } else if (modernMaterial == null || ServerVersion.isServerVersionBelow(ServerVersion.V1_13)) {
+            } else if (this.modernMaterial == null || ServerVersion.isServerVersionBelow(ServerVersion.V1_13)) {
                 // use legacy material if on legacy
-                material = Material.getMaterial(legacyMaterial);
+                this.material = Material.getMaterial(legacyMaterial);
-                data = legacyData;
+                this.data = legacyData;
             } else {
-                material = Material.getMaterial(modernMaterial);
+                this.material = Material.getMaterial(this.modernMaterial);
-                data = null;
+                this.data = null;
             }
         } else {
-            material = null;
+            this.material = null;
-            data = null;
+            this.data = null;
         }
     }
 
     public Material getMaterial() {
-        return material;
+        return this.material;
     }
 
     public boolean usesData() {
-        return data != null;
+        return this.data != null;
     }
 
     public byte getData() {
-        return data == null ? 0 : data;
+        return this.data == null ? 0 : this.data;
     }
 
     public ItemStack getItem() {
-        if (material == null) {
+        if (this.material == null) {
             return null;
         }
 
-        return data != null ? new ItemStack(material, 1, data) : new ItemStack(material);
+        return this.data != null ? new ItemStack(this.material, 1, this.data) : new ItemStack(this.material);
     }
 }

Compatibility/src/main/java/com/craftaro/core/compatibility/LegacyMaterialBlockType.java

@@ -52,8 +52,8 @@ public enum LegacyMaterialBlockType {
     final String alternateBlockMaterialName;
     final Material blockMaterial, alternateBlockMaterial;
     final boolean requiresData; // some blocks require data to render properly (double blocks)
-    final static Map<String, LegacyMaterialBlockType> lookupTable = new HashMap<>();
+    static final Map<String, LegacyMaterialBlockType> lookupTable = new HashMap<>();
-    final static Map<String, LegacyMaterialBlockType> reverseLookupTable = new HashMap<>();
+    static final Map<String, LegacyMaterialBlockType> reverseLookupTable = new HashMap<>();
 
     static {
         for (LegacyMaterialBlockType t : values()) {
@@ -85,29 +85,29 @@ public enum LegacyMaterialBlockType {
         this.blockMaterialName = blockMaterial;
         this.alternateBlockMaterialName = alternateMaterial;
         this.requiresData = requiresData;
-        this.blockMaterial = Material.getMaterial(blockMaterialName);
+        this.blockMaterial = Material.getMaterial(this.blockMaterialName);
-        this.alternateBlockMaterial = Material.getMaterial(alternateBlockMaterialName);
+        this.alternateBlockMaterial = Material.getMaterial(this.alternateBlockMaterialName);
         this.blockData = data;
     }
 
     public String getBlockMaterialName() {
-        return blockMaterialName;
+        return this.blockMaterialName;
     }
 
     public String getAlternateMaterialName() {
-        return alternateBlockMaterialName;
+        return this.alternateBlockMaterialName;
     }
 
     public Material getBlockMaterial() {
-        return blockMaterial;
+        return this.blockMaterial;
     }
 
     public Material getAlternateBlockMaterial() {
-        return alternateBlockMaterial;
+        return this.alternateBlockMaterial;
     }
 
     public boolean requiresData() {
-        return requiresData;
+        return this.requiresData;
     }
 
     public static LegacyMaterialBlockType getMaterial(String lookup) {

Compatibility/src/main/java/com/craftaro/core/compatibility/LegacyParticleEffects.java

@@ -15,7 +15,6 @@ import java.util.logging.Logger;
 
 /**
  * Particle effects for servers 1.8 and below
- *
  * TODO: Needs a recode, this class should not have any advanced logic like NMS magic
  */
 public class LegacyParticleEffects {
@@ -177,7 +176,7 @@ public class LegacyParticleEffects {
         }
         final int rangeSquared = 256; // apparently there is no way to override this (unless to make smaller, of course)
         // collect a list of players to send this packet to
-        List<Player> sendTo = new ArrayList();
+        List<Player> sendTo = new ArrayList<>();
         if (localOnly == null) {
             for (Player p : l.getWorld().getPlayers()) {
                 if (p.getLocation().distanceSquared(l) <= rangeSquared) {

Compatibility/src/main/java/com/craftaro/core/compatibility/LegacyPotionEffects.java

@@ -3,15 +3,12 @@ package com.craftaro.core.compatibility;
 import org.bukkit.potion.PotionEffectType;
 
 import java.util.HashMap;
-import java.util.Random;
 
 public class LegacyPotionEffects {
     private LegacyPotionEffects() {
     }
 
-    protected final static Random rand = new Random();
+    private static final HashMap<Integer, String> potionEffectNames = new HashMap<Integer, String>() {
-
-    private final static HashMap<Integer, String> potionEffectNames = new HashMap<Integer, String>() {
         {
             put(PotionEffectType.SPEED.getId(), "Speed");
             put(PotionEffectType.SLOW.getId(), "Slowness");

Compatibility/src/main/java/com/craftaro/core/compatibility/MethodMapping.java

@@ -109,43 +109,43 @@ public enum MethodMapping {
 
     public Method getMethod(Class<?> clazz) {
         try {
-            String methodName = _1_18;
+            String methodName = this._1_18;
             switch (ServerVersion.getServerVersion()) {
                 case V1_14:
-                    if (_1_14 != null) {
+                    if (this._1_14 != null) {
-                        methodName = _1_14;
+                        methodName = this._1_14;
                     }
 
                     break;
                 case V1_17:
-                    if (_1_17 != null) {
+                    if (this._1_17 != null) {
-                        methodName = _1_17;
+                        methodName = this._1_17;
                     }
 
                     break;
                 case V1_18:
-                    if (_1_18_2 != null) {
+                    if (this._1_18_2 != null) {
-                        methodName = _1_18_2;
+                        methodName = this._1_18_2;
                     }
 
                     break;
                 case V1_19:
-                    if (_1_19 != null) {
+                    if (this._1_19 != null) {
-                        methodName = _1_19;
+                        methodName = this._1_19;
                     }
 
                     break;
             }
 
             try {
-                Method method = clazz.getMethod(methodName, parameters);
+                Method method = clazz.getMethod(methodName, this.parameters);
                 method.setAccessible(true);
 
                 return method;
             } catch (NullPointerException | NoSuchMethodException ex) {
-                if (saneFallback != null && !saneFallback.equals(methodName)) {
+                if (this.saneFallback != null && !this.saneFallback.equals(methodName)) {
                     try {
-                        Method method = clazz.getMethod(saneFallback, parameters);
+                        Method method = clazz.getMethod(this.saneFallback, this.parameters);
                         method.setAccessible(true);
 
                         return method;

Compatibility/src/main/java/com/craftaro/core/compatibility/ServerProject.java

@@ -5,7 +5,7 @@ import org.bukkit.Bukkit;
 
 public enum ServerProject {
     UNKNOWN, CRAFTBUKKIT, SPIGOT, PAPER, TACO, GLOWSTONE, MOCK_BUKKIT;
-    private final static ServerProject serverProject = checkProject();
+    private static final ServerProject serverProject = checkProject();
 
     private static ServerProject checkProject() {
         String serverPath = Bukkit.getServer().getClass().getName();

Compatibility/src/main/java/com/craftaro/core/compatibility/ServerVersion.java

@@ -4,12 +4,12 @@ import org.apache.commons.lang3.ArrayUtils;
 import org.bukkit.Bukkit;
 
 public enum ServerVersion {
-    UNKNOWN, V1_7, V1_8, V1_9, V1_10, V1_11, V1_12, V1_13, V1_14, V1_15, V1_16, V1_17, V1_18, V1_19, V1_20, V1_21;
+    UNKNOWN, V1_7, V1_8, V1_9, V1_10, V1_11, V1_12, V1_13, V1_14, V1_15, V1_16, V1_17, V1_18, V1_19, V1_20, V1_21, V1_22, V1_23;
 
-    private final static String serverPackageVersion;
+    private static final String serverPackageVersion;
-    private final static String serverReleaseVersion;
+    private static final String serverReleaseVersion;
-    private final static ServerVersion serverVersion;
+    private static final ServerVersion serverVersion;
-    private final static boolean isMocked;
+    private static final boolean isMocked;
 
     static {
         if (Bukkit.getServer() != null) {

Core/pom.xml

@@ -35,7 +35,7 @@
                     <injections>
                         <injection>
                             <value>${project.version}</value>
-                            <pointCut>com.craftaro.core.SongodaCoreConstants.getCoreVersion</pointCut>
+                            <pointCut>com.craftaro.core.CraftaroCoreConstants.getCoreVersion</pointCut>
                         </injection>
                     </injections>
                 </configuration>
@@ -60,7 +60,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.5.0</version>
 
                 <executions>
                     <execution>
@@ -81,6 +81,7 @@
                                     <include>com.zaxxer:HikariCP</include>
                                     <include>de.tr7zw:item-nbt-api</include>
                                     <include>net.kyori:*</include>
+                                    <include>com.github.cryptomorin:XSeries</include>
                                     <include>org.apache.commons:commons-lang3</include>
                                     <include>org.apache.commons:commons-text</include>
                                     <include>org.jooq:jooq</include>
@@ -130,7 +131,26 @@
                                     <pattern>org.h2</pattern>
                                     <shadedPattern>com.craftaro.core.third_party.org.h2</shadedPattern>
                                 </relocation>
+
+                                <relocation>
+                                    <pattern>com.cryptomorin.xseries</pattern>
+                                    <shadedPattern>com.craftaro.core.third_party.com.cryptomorin.xseries</shadedPattern>
+                                </relocation>
                             </relocations>
+
+                            <filters>
+                                <filter>
+                                    <artifact>*:*</artifact>
+                                    <excludes>
+                                        <exclude>META-INF/INDEX.LIST</exclude>
+                                        <exclude>META-INF/*.SF</exclude>
+                                        <exclude>META-INF/*.DSA</exclude>
+                                        <exclude>META-INF/*.RSA</exclude>
+                                        <exclude>**/LICENSE*</exclude>
+                                        <exclude>**/NOTICE*</exclude>
+                                    </excludes>
+                                </filter>
+                            </filters>
                         </configuration>
                     </execution>
                 </executions>
@@ -151,6 +171,7 @@
     </dependencyManagement>
 
     <dependencies>
+        <!--suppress VulnerableLibrariesLocal -->
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot</artifactId>
@@ -176,7 +197,7 @@
         <dependency>
             <groupId>de.tr7zw</groupId>
             <artifactId>item-nbt-api</artifactId>
-            <version>2.11.2</version>
+            <version>2.11.3</version>
             <scope>compile</scope>
         </dependency>
 

Core/src/main/java/com/craftaro/core/CraftaroCoreConstants.java

@@ -7,8 +7,8 @@ package com.craftaro.core;
  * <p>
  * <b>!! Manually changing the values in this class has to be considered a breaking change. !!</b>
  */
-public class SongodaCoreConstants {
+public class CraftaroCoreConstants {
-    private SongodaCoreConstants() {
+    private CraftaroCoreConstants() {
         throw new IllegalStateException("Utility class");
     }
 
@@ -17,10 +17,10 @@ public class SongodaCoreConstants {
     }
 
     public static String getProjectName() {
-        return "SongodaCore";
+        return "CraftaroCore";
     }
 
     public static String getGitHubProjectUrl() {
-        return "https://github.com/craftaro/SongodaCore";
+        return "https://github.com/craftaro/CraftaroCore";
     }
 }

Core/src/main/java/com/craftaro/core/SongodaCore.java

@@ -1,6 +1,7 @@
 package com.craftaro.core;
 
 import com.craftaro.core.commands.CommandManager;
+import com.craftaro.core.compatibility.ClientVersion;
 import com.craftaro.core.core.LocaleModule;
 import com.craftaro.core.core.PluginInfo;
 import com.craftaro.core.core.PluginInfoModule;
@@ -10,8 +11,7 @@ import com.craftaro.core.core.SongodaCoreLicenseCommand;
 import com.craftaro.core.core.SongodaCoreUUIDCommand;
 import com.craftaro.core.verification.CraftaroProductVerification;
 import com.craftaro.core.verification.ProductVerificationStatus;
-import com.craftaro.core.compatibility.ClientVersion;
+import com.cryptomorin.xseries.XMaterial;
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -46,7 +46,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 public class SongodaCore {
-    private static final Logger logger = Logger.getLogger(SongodaCoreConstants.getProjectName());
+    private static final Logger logger = Logger.getLogger(CraftaroCoreConstants.getProjectName());
 
     /**
      * Whenever we make a major change to the core GUI, updater,
@@ -59,10 +59,10 @@ public class SongodaCore {
 
     /**
      * @since coreRevision 6
-     * @deprecated Is being replaced by {@link SongodaCoreConstants#getCoreVersion()} which is automatically kept up to date.
+     * @deprecated Is being replaced by {@link CraftaroCoreConstants#getCoreVersion()} which is automatically kept up to date.
      */
     @Deprecated
-    private static final String coreVersion = SongodaCoreConstants.getCoreVersion();
+    private static final String coreVersion = CraftaroCoreConstants.getCoreVersion();
 
     /**
      * This is specific to the website api
@@ -83,11 +83,11 @@ public class SongodaCore {
 
     public static boolean hasShading() {
         // sneaky hack to check the package name since maven tries to re-shade all references to the package string
-        return !SongodaCore.class.getPackage().getName().equals(new String(new char[] {'c', 'o', 'm', '.', 's', 'o', 'n', 'g', 'o', 'd', 'a', '.', 'c', 'o', 'r', 'e'}));
+        return !SongodaCore.class.getPackage().getName().equals(new String(new char[] {'c', 'o', 'm', '.', 'c', 'r', 'a', 'f', 't', 'a', 'r', 'o', '.', 'c', 'o', 'r', 'e'}));
     }
 
-    public static void registerPlugin(JavaPlugin plugin, int pluginID, CompatibleMaterial icon) {
+    public static void registerPlugin(JavaPlugin plugin, int pluginID, XMaterial icon) {
-        registerPlugin(plugin, pluginID, icon == null ? "STONE" : icon.name(), SongodaCoreConstants.getCoreVersion());
+        registerPlugin(plugin, pluginID, icon == null ? "STONE" : icon.name(), CraftaroCoreConstants.getCoreVersion());
     }
 
     public static void registerPlugin(JavaPlugin plugin, int pluginID, String icon) {
@@ -182,31 +182,31 @@ public class SongodaCore {
     }
 
     SongodaCore() {
-        commandManager = null;
+        this.commandManager = null;
     }
 
     SongodaCore(JavaPlugin javaPlugin) {
-        piggybackedPlugin = javaPlugin;
+        this.piggybackedPlugin = javaPlugin;
-        commandManager = new CommandManager(piggybackedPlugin);
+        this.commandManager = new CommandManager(this.piggybackedPlugin);
-        loginListener = new EventListener();
+        this.loginListener = new EventListener();
     }
 
     private void init() {
-        shadingListener = new ShadedEventListener();
+        this.shadingListener = new ShadedEventListener();
-        commandManager.registerCommandDynamically(new SongodaCoreCommand())
+        this.commandManager.registerCommandDynamically(new SongodaCoreCommand())
                 .addSubCommands(new SongodaCoreDiagCommand(), new SongodaCoreUUIDCommand(), new SongodaCoreLicenseCommand());
-        Bukkit.getPluginManager().registerEvents(loginListener, piggybackedPlugin);
+        Bukkit.getPluginManager().registerEvents(this.loginListener, this.piggybackedPlugin);
-        Bukkit.getPluginManager().registerEvents(shadingListener, piggybackedPlugin);
+        Bukkit.getPluginManager().registerEvents(this.shadingListener, this.piggybackedPlugin);
 
         // we aggressively want to own this command
-        tasks.add(Bukkit.getScheduler().runTaskLaterAsynchronously(piggybackedPlugin, () ->
+        this.tasks.add(Bukkit.getScheduler().runTaskLaterAsynchronously(this.piggybackedPlugin, () ->
-                        CommandManager.registerCommandDynamically(piggybackedPlugin, "songoda", commandManager, commandManager),
+                        CommandManager.registerCommandDynamically(this.piggybackedPlugin, "songoda", this.commandManager, this.commandManager),
                 10 * 60));
-        tasks.add(Bukkit.getScheduler().runTaskLaterAsynchronously(piggybackedPlugin, () ->
+        this.tasks.add(Bukkit.getScheduler().runTaskLaterAsynchronously(this.piggybackedPlugin, () ->
-                        CommandManager.registerCommandDynamically(piggybackedPlugin, "songoda", commandManager, commandManager),
+                        CommandManager.registerCommandDynamically(this.piggybackedPlugin, "songoda", this.commandManager, this.commandManager),
                 20 * 60));
-        tasks.add(Bukkit.getScheduler().runTaskLaterAsynchronously(piggybackedPlugin, () ->
+        this.tasks.add(Bukkit.getScheduler().runTaskLaterAsynchronously(this.piggybackedPlugin, () ->
-                        CommandManager.registerCommandDynamically(piggybackedPlugin, "songoda", commandManager, commandManager),
+                        CommandManager.registerCommandDynamically(this.piggybackedPlugin, "songoda", this.commandManager, this.commandManager),
                 20 * 60 * 2));
     }
 
@@ -216,17 +216,17 @@ public class SongodaCore {
     private void destroy() {
         Bukkit.getServicesManager().unregister(SongodaCore.class, INSTANCE);
 
-        tasks.stream().filter(Objects::nonNull)
+        this.tasks.stream().filter(Objects::nonNull)
                 .forEach(task -> Bukkit.getScheduler().cancelTask(task.getTaskId()));
 
-        HandlerList.unregisterAll(loginListener);
+        HandlerList.unregisterAll(this.loginListener);
         if (!hasShading()) {
-            HandlerList.unregisterAll(shadingListener);
+            HandlerList.unregisterAll(this.shadingListener);
         }
 
         registeredPlugins.clear();
-        commandManager = null;
+        this.commandManager = null;
-        loginListener = null;
+        this.loginListener = null;
     }
 
     private ArrayList<BukkitTask> tasks = new ArrayList<>();
@@ -247,7 +247,7 @@ public class SongodaCore {
         // don't forget to check for language pack updates ;)
         info.addModule(new LocaleModule());
         registeredPlugins.add(info);
-        tasks.add(Bukkit.getScheduler().runTaskLaterAsynchronously(plugin, () -> update(info), 60L));
+        this.tasks.add(Bukkit.getScheduler().runTaskLaterAsynchronously(plugin, () -> update(info), 60L));
     }
 
     /**
@@ -300,7 +300,7 @@ public class SongodaCore {
     }
 
     public static String getVersion() {
-        return SongodaCoreConstants.getCoreVersion();
+        return CraftaroCoreConstants.getCoreVersion();
     }
 
     /**
@@ -316,7 +316,7 @@ public class SongodaCore {
      */
     @Deprecated
     public static String getCoreLibraryVersion() {
-        return SongodaCoreConstants.getCoreVersion();
+        return CraftaroCoreConstants.getCoreVersion();
     }
 
     public static int getCoreMajorVersion() {
@@ -337,7 +337,7 @@ public class SongodaCore {
     }
 
     public static String getPrefix() {
-        return "[" + SongodaCoreConstants.getProjectName() + "] ";
+        return "[" + CraftaroCoreConstants.getProjectName() + "] ";
     }
 
     public static Logger getLogger() {
@@ -361,34 +361,34 @@ public class SongodaCore {
         boolean proto = false;
 
         ShadedEventListener() {
-            via = Bukkit.getPluginManager().isPluginEnabled("ViaVersion");
+            this.via = Bukkit.getPluginManager().isPluginEnabled("ViaVersion");
 
-            if (via) {
+            if (this.via) {
                 Bukkit.getOnlinePlayers().forEach(p -> ClientVersion.onLoginVia(p, getHijackedPlugin()));
                 return;
             }
 
-            proto = Bukkit.getPluginManager().isPluginEnabled("ProtocolSupport");
+            this.proto = Bukkit.getPluginManager().isPluginEnabled("ProtocolSupport");
-            if (proto) {
+            if (this.proto) {
                 Bukkit.getOnlinePlayers().forEach(p -> ClientVersion.onLoginProtocol(p, getHijackedPlugin()));
             }
         }
 
         @EventHandler
         void onLogin(PlayerLoginEvent event) {
-            if (via) {
+            if (this.via) {
                 ClientVersion.onLoginVia(event.getPlayer(), getHijackedPlugin());
                 return;
             }
 
-            if (proto) {
+            if (this.proto) {
                 ClientVersion.onLoginProtocol(event.getPlayer(), getHijackedPlugin());
             }
         }
 
         @EventHandler
         void onLogout(PlayerQuitEvent event) {
-            if (via) {
+            if (this.via) {
                 ClientVersion.onLogout(event.getPlayer());
             }
         }
@@ -396,9 +396,9 @@ public class SongodaCore {
         @EventHandler
         void onEnable(PluginEnableEvent event) {
             // technically shouldn't have online players here, but idk
-            if (!via && (via = event.getPlugin().getName().equals("ViaVersion"))) {
+            if (!this.via && (this.via = event.getPlugin().getName().equals("ViaVersion"))) {
                 Bukkit.getOnlinePlayers().forEach(p -> ClientVersion.onLoginVia(p, getHijackedPlugin()));
-            } else if (!proto && (proto = event.getPlugin().getName().equals("ProtocolSupport"))) {
+            } else if (!this.proto && (this.proto = event.getPlugin().getName().equals("ProtocolSupport"))) {
                 Bukkit.getOnlinePlayers().forEach(p -> ClientVersion.onLoginProtocol(p, getHijackedPlugin()));
             }
         }
@@ -413,13 +413,13 @@ public class SongodaCore {
 
             // don't spam players with update checks
             long now = System.currentTimeMillis();
-            Long last = lastCheck.get(player.getUniqueId());
+            Long last = this.lastCheck.get(player.getUniqueId());
 
             if (last != null && now - 10000 < last) {
                 return;
             }
 
-            lastCheck.put(player.getUniqueId(), now);
+            this.lastCheck.put(player.getUniqueId(), now);
 
             // is this player good to revieve update notices?
             if (!event.getPlayer().isOp() && !player.hasPermission("songoda.updatecheck")) return;
@@ -441,19 +441,19 @@ public class SongodaCore {
                 registeredPlugins.remove(pi);
             }
 
-            if (event.getPlugin() == piggybackedPlugin) {
+            if (event.getPlugin() == SongodaCore.this.piggybackedPlugin) {
                 // uh-oh! Abandon ship!!
-                Bukkit.getServicesManager().unregisterAll(piggybackedPlugin);
+                Bukkit.getServicesManager().unregisterAll(SongodaCore.this.piggybackedPlugin);
 
                 // can we move somewhere else?
                 if ((pi = registeredPlugins.stream().findFirst().orElse(null)) != null) {
                     // move ourselves to this plugin
-                    piggybackedPlugin = pi.getJavaPlugin();
+                    SongodaCore.this.piggybackedPlugin = pi.getJavaPlugin();
 
-                    Bukkit.getServicesManager().register(SongodaCore.class, INSTANCE, piggybackedPlugin, ServicePriority.Normal);
+                    Bukkit.getServicesManager().register(SongodaCore.class, INSTANCE, SongodaCore.this.piggybackedPlugin, ServicePriority.Normal);
-                    Bukkit.getPluginManager().registerEvents(loginListener, piggybackedPlugin);
+                    Bukkit.getPluginManager().registerEvents(SongodaCore.this.loginListener, SongodaCore.this.piggybackedPlugin);
-                    Bukkit.getPluginManager().registerEvents(shadingListener, piggybackedPlugin);
+                    Bukkit.getPluginManager().registerEvents(SongodaCore.this.shadingListener, SongodaCore.this.piggybackedPlugin);
-                    CommandManager.registerCommandDynamically(piggybackedPlugin, "songoda", commandManager, commandManager);
+                    CommandManager.registerCommandDynamically(SongodaCore.this.piggybackedPlugin, "songoda", SongodaCore.this.commandManager, SongodaCore.this.commandManager);
                 }
             }
         }

Core/src/main/java/com/craftaro/core/SongodaPlugin.java

@@ -1,6 +1,5 @@
 package com.craftaro.core;
 
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.configuration.Config;
 import com.craftaro.core.database.DataManager;
 import com.craftaro.core.database.DataMigration;
@@ -9,6 +8,7 @@ import com.craftaro.core.locale.Locale;
 import com.craftaro.core.utils.Metrics;
 import com.craftaro.core.verification.CraftaroProductVerification;
 import com.craftaro.core.verification.ProductVerificationStatus;
+import com.cryptomorin.xseries.XMaterial;
 import de.tr7zw.changeme.nbtapi.utils.MinecraftVersion;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
@@ -20,6 +20,7 @@ import java.io.File;
 import java.sql.Connection;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 
 public abstract class SongodaPlugin extends JavaPlugin {
@@ -35,7 +36,6 @@ public abstract class SongodaPlugin extends JavaPlugin {
     static {
         /* NBT-API */
         MinecraftVersion.getLogger().setLevel(Level.WARNING);
-        MinecraftVersion.disableUpdateCheck();
         // Disable tips and logo for Jooq
         System.setProperty("org.jooq.no-tips", "true");
         System.setProperty("org.jooq.no-logo", "true");
@@ -63,22 +63,22 @@ public abstract class SongodaPlugin extends JavaPlugin {
 
     @Override
     public FileConfiguration getConfig() {
-        return config.getFileConfig();
+        return this.config.getFileConfig();
     }
 
     public Config getCoreConfig() {
-        return config;
+        return this.config;
     }
 
     @Override
     public void reloadConfig() {
-        config.load();
+        this.config.load();
         onConfigReload();
     }
 
     @Override
     public void saveConfig() {
-        config.save();
+        this.config.save();
     }
 
     @Override
@@ -111,7 +111,7 @@ public abstract class SongodaPlugin extends JavaPlugin {
                     ChatColor.YELLOW + "Run the command " + ChatColor.GOLD + "/craftaro license" + ChatColor.YELLOW + " and follow the instructions\n" +
                     ChatColor.RED + "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
             this.licensePreventedPluginLoad = true;
-            SongodaCore.registerPlugin(this, CraftaroProductVerification.getProductId(), (CompatibleMaterial) null);
+            SongodaCore.registerPlugin(this, CraftaroProductVerification.getProductId(), (XMaterial) null);
 
             getServer().getScheduler().scheduleSyncRepeatingTask(this, () -> {
                 String pluginName = getDescription().getName();

Core/src/main/java/com/craftaro/core/chat/ChatMessage.java

@@ -1,12 +1,12 @@
 package com.craftaro.core.chat;
 
+import com.craftaro.core.compatibility.ClassMapping;
+import com.craftaro.core.compatibility.ServerVersion;
 import com.craftaro.core.nms.Nms;
 import com.craftaro.core.utils.TextUtils;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonObject;
-import com.craftaro.core.compatibility.ClassMapping;
-import com.craftaro.core.compatibility.ServerVersion;
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;

Core/src/main/java/com/craftaro/core/chat/ColorContainer.java

@@ -1,9 +1,9 @@
 package com.craftaro.core.chat;
 
-import com.craftaro.core.utils.ColorUtils;
 import com.craftaro.core.compatibility.ServerVersion;
+import com.craftaro.core.utils.ColorUtils;
 
-import java.awt.*;
+import java.awt.Color;
 
 public class ColorContainer {
     private ColorCode colorCode;
@@ -24,26 +24,26 @@ public class ColorContainer {
     }
 
     public ColorCode getColorCode() {
-        return colorCode;
+        return this.colorCode;
     }
 
     public String getHexCode() {
-        return hexCode;
+        return this.hexCode;
     }
 
     public ColorCode getColor() {
-        if (colorCode != null) {
+        if (this.colorCode != null) {
-            return colorCode;
+            return this.colorCode;
         }
 
-        if (hexCode == null) {
+        if (this.hexCode == null) {
             return null;
         }
 
         java.awt.Color jColor = new Color(
-                Integer.valueOf(hexCode.substring(0, 2), 16),
+                Integer.valueOf(this.hexCode.substring(0, 2), 16),
-                Integer.valueOf(hexCode.substring(2, 4), 16),
+                Integer.valueOf(this.hexCode.substring(2, 4), 16),
-                Integer.valueOf(hexCode.substring(4, 6), 16));
+                Integer.valueOf(this.hexCode.substring(4, 6), 16));
 
         return ColorUtils.fromRGB(jColor.getRed(), jColor.getGreen(), jColor.getBlue());
     }

Core/src/main/java/com/craftaro/core/configuration/ConfigFileConfigurationAdapter.java

@@ -1,6 +1,6 @@
 package com.craftaro.core.configuration;
 
-import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.configuration.Configuration;
 import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.InvalidConfigurationException;
@@ -256,12 +256,12 @@ public class ConfigFileConfigurationAdapter extends FileConfiguration {
     }
 
     @Nullable
-    public CompatibleMaterial getMaterial(@NotNull String path) {
+    public XMaterial getMaterial(@NotNull String path) {
         return config.getMaterial(path);
     }
 
     @Nullable
-    public CompatibleMaterial getMaterial(@NotNull String path, @Nullable CompatibleMaterial def) {
+    public XMaterial getMaterial(@NotNull String path, @Nullable XMaterial def) {
         return config.getMaterial(path, def);
     }
 

Core/src/main/java/com/craftaro/core/configuration/ConfigSection.java

@@ -1,6 +1,7 @@
 package com.craftaro.core.configuration;
 
 import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.configuration.Configuration;
 import org.bukkit.configuration.MemoryConfiguration;
 import org.jetbrains.annotations.NotNull;
@@ -714,18 +715,17 @@ public class ConfigSection extends MemoryConfiguration {
     }
 
     @Nullable
-    public CompatibleMaterial getMaterial(@NotNull String path) {
+    public XMaterial getMaterial(@NotNull String path) {
         String val = getString(path);
 
-        return val != null ? CompatibleMaterial.getMaterial(val) : null;
+        return val != null ? CompatibleMaterial.getMaterial(val).orElse(null) : null;
     }
 
     @Nullable
-    public CompatibleMaterial getMaterial(@NotNull String path, @Nullable CompatibleMaterial def) {
+    public XMaterial getMaterial(@NotNull String path, @Nullable XMaterial def) {
         String val = getString(path);
 
-        CompatibleMaterial mat = val != null ? CompatibleMaterial.getMaterial(val) : null;
+        XMaterial mat = val != null ? CompatibleMaterial.getMaterial(val).orElse(def) : null;
-
         return mat != null ? mat : def;
     }
 

Core/src/main/java/com/craftaro/core/configuration/ConfigSetting.java

@@ -2,10 +2,12 @@ package com.craftaro.core.configuration;
 
 import com.craftaro.core.SongodaCore;
 import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.List;
+import java.util.Optional;
 import java.util.logging.Level;
 
 public class ConfigSetting {
@@ -109,27 +111,25 @@ public class ConfigSetting {
     }
 
     @NotNull
-    public CompatibleMaterial getMaterial() {
+    public XMaterial getMaterial() {
         String val = config.getString(key);
-        CompatibleMaterial mat = CompatibleMaterial.getMaterial(config.getString(key));
+        Optional<XMaterial> mat = CompatibleMaterial.getMaterial(config.getString(key));
 
-        if (mat == null) {
+        if (!mat.isPresent()) {
             SongodaCore.getLogger().log(Level.WARNING, String.format("Config value \"%s\" has an invalid material name: \"%s\"", key, val));
         }
-
+        return mat.orElse(XMaterial.STONE);
-        return mat != null ? mat : CompatibleMaterial.STONE;
     }
 
     @NotNull
-    public CompatibleMaterial getMaterial(@NotNull CompatibleMaterial def) {
+    public XMaterial getMaterial(@NotNull XMaterial def) {
         //return config.getMaterial(key, def);
         String val = config.getString(key);
-        CompatibleMaterial mat = val != null ? CompatibleMaterial.getMaterial(val) : null;
+        Optional<XMaterial> mat = val != null ? CompatibleMaterial.getMaterial(val) : Optional.empty();
 
-        if (mat == null) {
+        if (!mat.isPresent()) {
             SongodaCore.getLogger().log(Level.WARNING, String.format("Config value \"%s\" has an invalid material name: \"%s\"", key, val));
         }
-
+        return mat.orElse(def);
-        return mat != null ? mat : def;
     }
 }

Core/src/main/java/com/craftaro/core/configuration/editor/ConfigEditorGui.java

@@ -7,6 +7,7 @@ import com.craftaro.core.gui.GuiUtils;
 import com.craftaro.core.gui.SimplePagedGui;
 import com.craftaro.core.input.ChatPrompt;
 import com.craftaro.core.utils.ItemUtils;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.ChatColor;
 import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.MemoryConfiguration;
@@ -22,7 +23,9 @@ import java.io.IOException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.LinkedList;
 import java.util.List;
+import java.util.Optional;
 import java.util.logging.Level;
 
 /**
@@ -51,7 +54,7 @@ public class ConfigEditorGui extends SimplePagedGui {
         this.file = file;
         this.config = config;
         this.node = node;
-        this.blankItem = GuiUtils.getBorderItem(CompatibleMaterial.LIGHT_GRAY_STAINED_GLASS_PANE);
+        this.blankItem = GuiUtils.getBorderItem(XMaterial.LIGHT_GRAY_STAINED_GLASS_PANE);
 
         if (!(parent instanceof ConfigEditorGui)) {
             setOnClose((gui) -> save());
@@ -68,10 +71,10 @@ public class ConfigEditorGui extends SimplePagedGui {
         // decorate header
         this.setTitle(ChatColor.DARK_BLUE + file);
         this.setUseHeader(true);
-        headerBackItem = footerBackItem = GuiUtils.getBorderItem(CompatibleMaterial.GRAY_STAINED_GLASS_PANE.getItem());
+        headerBackItem = footerBackItem = GuiUtils.getBorderItem(XMaterial.GRAY_STAINED_GLASS_PANE.parseItem());
         final String path = node.getCurrentPath();
-        this.setItem(4, configItem(CompatibleMaterial.FILLED_MAP, !path.isEmpty() ? path : file, config, !path.isEmpty() ? path : null, ChatColor.BLACK.toString()));
+        this.setItem(4, configItem(XMaterial.FILLED_MAP, !path.isEmpty() ? path : file, config, !path.isEmpty() ? path : null, ChatColor.BLACK.toString()));
-        this.setButton(8, GuiUtils.createButtonItem(CompatibleMaterial.OAK_DOOR, "Exit"), (event) -> event.player.closeInventory());
+        this.setButton(8, GuiUtils.createButtonItem(XMaterial.OAK_DOOR, "Exit"), (event) -> event.player.closeInventory());
 
         // compile list of settings
         for (String key : node.getKeys(false)) {
@@ -86,7 +89,7 @@ public class ConfigEditorGui extends SimplePagedGui {
         // next we need to display the config settings
         int index = 9;
         for (final String sectionKey : sections) {
-            setButton(index++, configItem(CompatibleMaterial.WRITABLE_BOOK, ChatColor.YELLOW + sectionKey, node, sectionKey, "Click to open this section"),
+            setButton(index++, configItem(XMaterial.WRITABLE_BOOK, ChatColor.YELLOW + sectionKey, node, sectionKey, "Click to open this section"),
                     (event) -> event.manager.showGUI(event.player, new ConfigEditorGui(player, plugin, this, file, config, node.getConfigurationSection(sectionKey))));
         }
 
@@ -99,7 +102,7 @@ public class ConfigEditorGui extends SimplePagedGui {
 
             if (val instanceof Boolean) {
                 // toggle switch
-                setButton(index, configItem(CompatibleMaterial.LEVER, ChatColor.YELLOW + settingKey, node, settingKey, String.valueOf(val), "Click to toggle this setting"),
+                setButton(index, configItem(XMaterial.LEVER, ChatColor.YELLOW + settingKey, node, settingKey, String.valueOf(val), "Click to toggle this setting"),
                         (event) -> this.toggle(event.slot, settingKey));
 
                 if ((Boolean) val) {
@@ -107,7 +110,7 @@ public class ConfigEditorGui extends SimplePagedGui {
                 }
             } else if (isNumber(val)) {
                 // number dial
-                this.setButton(index, configItem(CompatibleMaterial.CLOCK, ChatColor.YELLOW + settingKey, node, settingKey, String.valueOf(val), "Click to edit this setting"),
+                this.setButton(index, configItem(XMaterial.CLOCK, ChatColor.YELLOW + settingKey, node, settingKey, String.valueOf(val), "Click to edit this setting"),
                         (event) -> {
                             event.gui.exit();
                             ChatPrompt.showPrompt(plugin, event.player, "Enter a new number value for " + settingKey + ":", response -> {
@@ -123,14 +126,14 @@ public class ConfigEditorGui extends SimplePagedGui {
             } else if (isMaterial(val)) {
                 // changing a block
                 // isMaterial is more of a guess, to be honest.
-                setButton(index, configItem(CompatibleMaterial.STONE, ChatColor.YELLOW + settingKey, node, settingKey, val.toString(), "Click to edit this setting"),
+                setButton(index, configItem(XMaterial.STONE, ChatColor.YELLOW + settingKey, node, settingKey, val.toString(), "Click to edit this setting"),
                         (event) -> {
                             SimplePagedGui paged = new SimplePagedGui(this);
                             paged.setTitle(ChatColor.BLUE + settingKey);
                             paged.setHeaderBackItem(headerBackItem).setFooterBackItem(footerBackItem).setDefaultItem(blankItem);
-                            paged.setItem(4, configItem(CompatibleMaterial.FILLED_MAP, settingKey, node, settingKey, "Choose an item to change this value to"));
+                            paged.setItem(4, configItem(XMaterial.FILLED_MAP, settingKey, node, settingKey, "Choose an item to change this value to"));
                             int i = 9;
-                            for (CompatibleMaterial mat : CompatibleMaterial.getAllValidItemMaterials()) {
+                            for (XMaterial mat : getAllValidMaterials()) {
                                 try {
                                     ItemStack buttonItem = GuiUtils.createButtonItem(mat, mat.name());
                                     if (!buttonItem.getType().isItem()) continue;
@@ -147,7 +150,7 @@ public class ConfigEditorGui extends SimplePagedGui {
                         });
             } else if (val instanceof String) {
                 // changing a "string" value (or change to a feather for writing quill)
-                setButton(index, configItem(CompatibleMaterial.STRING, ChatColor.YELLOW + settingKey, node, settingKey, val.toString(), "Click to edit this setting"),
+                setButton(index, configItem(XMaterial.STRING, ChatColor.YELLOW + settingKey, node, settingKey, val.toString(), "Click to edit this setting"),
                         (event) -> {
                             event.gui.exit();
                             ChatPrompt.showPrompt(plugin, event.player, "Enter a new value for " + settingKey + ":", response -> {
@@ -160,7 +163,7 @@ public class ConfigEditorGui extends SimplePagedGui {
                                     });
                         });
             } else if (val instanceof List) {
-                setButton(index, configItem(CompatibleMaterial.WRITABLE_BOOK, ChatColor.YELLOW + settingKey, node, settingKey, String.format("(%d values)", ((List<?>) val).size()), "Click to edit this setting"),
+                setButton(index, configItem(XMaterial.WRITABLE_BOOK, ChatColor.YELLOW + settingKey, node, settingKey, String.format("(%d values)", ((List<?>) val).size()), "Click to edit this setting"),
                         (event) ->
                                 event.manager.showGUI(event.player, (new ConfigEditorListEditorGui(this, settingKey, (List) val)).setOnClose((gui) -> {
                                     if (((ConfigEditorListEditorGui) gui.gui).saveChanges) {
@@ -244,12 +247,12 @@ public class ConfigEditorGui extends SimplePagedGui {
     }
 
     void setMaterial(int clickCell, String path, ItemStack item) {
-        CompatibleMaterial mat = CompatibleMaterial.getMaterial(item);
+        Optional<XMaterial> mat = CompatibleMaterial.getMaterial(item.getType());
 
-        if (mat == null) {
+        if (!mat.isPresent()) {
-            node.set(path, CompatibleMaterial.STONE.name());
+            node.set(path, XMaterial.STONE.name());
         } else {
-            node.set(path, mat.name());
+            node.set(path, mat.get().name());
         }
 
         updateValue(clickCell, path);
@@ -293,13 +296,15 @@ public class ConfigEditorGui extends SimplePagedGui {
     }
 
     private boolean isMaterial(Object value) {
-        CompatibleMaterial m;
+        if (!(value instanceof String && value.toString().equals(value.toString().toUpperCase()))) {
+            return false;
+        }
 
-        return value instanceof String && value.toString().equals(value.toString().toUpperCase())
+        Optional<XMaterial> material = CompatibleMaterial.getMaterial(value.toString());
-                && (m = CompatibleMaterial.getMaterial(value.toString())) != null && m.isValidItem();
+        return material.isPresent() && material.get().isSupported();
     }
 
-    protected ItemStack configItem(CompatibleMaterial type, String name, ConfigurationSection node, String path, String def) {
+    protected ItemStack configItem(XMaterial type, String name, ConfigurationSection node, String path, String def) {
         String[] info = null;
 
         if (configSection_getCommentString != null) {
@@ -316,7 +321,7 @@ public class ConfigEditorGui extends SimplePagedGui {
         return GuiUtils.createButtonItem(type, name, info != null ? info : (def != null ? def.split("\n") : null));
     }
 
-    protected ItemStack configItem(CompatibleMaterial type, String name, ConfigurationSection node, String path, String value, String def) {
+    protected ItemStack configItem(XMaterial type, String name, ConfigurationSection node, String path, String value, String def) {
         if (value == null) {
             value = "";
         }
@@ -335,4 +340,14 @@ public class ConfigEditorGui extends SimplePagedGui {
 
         return GuiUtils.createButtonItem(type, name, info != null ? info : (def != null ? (value + "\n" + def).split("\n") : null));
     }
+
+    private List<XMaterial> getAllValidMaterials() {
+        List<XMaterial> materials = new LinkedList<>();
+        for (XMaterial material : XMaterial.values()) {
+            if (material.isSupported()) {
+                materials.add(material);
+            }
+        }
+        return materials;
+    }
 }

Core/src/main/java/com/craftaro/core/configuration/editor/ConfigEditorListEditorGui.java

@@ -1,9 +1,9 @@
 package com.craftaro.core.configuration.editor;
 
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.gui.GuiUtils;
 import com.craftaro.core.gui.SimplePagedGui;
 import com.craftaro.core.input.ChatPrompt;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.ChatColor;
 import org.bukkit.event.inventory.ClickType;
 
@@ -27,16 +27,16 @@ public class ConfigEditorListEditorGui extends SimplePagedGui {
         headerBackItem = footerBackItem = current.getHeaderBackItem();
         setTitle(ChatColor.DARK_BLUE + "String List Editor");
         this.setUseHeader(true);
-        this.setItem(4, current.configItem(CompatibleMaterial.FILLED_MAP, key, current.getCurrentNode(), key, null));
+        this.setItem(4, current.configItem(XMaterial.FILLED_MAP, key, current.getCurrentNode(), key, null));
-        this.setButton(8, GuiUtils.createButtonItem(CompatibleMaterial.OAK_DOOR, "Exit"), (event) -> event.player.closeInventory());
+        this.setButton(8, GuiUtils.createButtonItem(XMaterial.OAK_DOOR, "Exit"), (event) -> event.player.closeInventory());
         this.values = new ArrayList<>(val);
 
-        this.setButton(8, GuiUtils.createButtonItem(CompatibleMaterial.LAVA_BUCKET, ChatColor.RED + "Discard Changes"), (event) -> event.player.closeInventory());
+        this.setButton(8, GuiUtils.createButtonItem(XMaterial.LAVA_BUCKET, ChatColor.RED + "Discard Changes"), (event) -> event.player.closeInventory());
-        this.setButton(0, GuiUtils.createButtonItem(CompatibleMaterial.REDSTONE, ChatColor.GREEN + "Save"), (event) -> {
+        this.setButton(0, GuiUtils.createButtonItem(XMaterial.REDSTONE, ChatColor.GREEN + "Save"), (event) -> {
             saveChanges = true;
             event.player.closeInventory();
         });
-        this.setButton(1, GuiUtils.createButtonItem(CompatibleMaterial.CHEST, ChatColor.BLUE + "Add Item"),
+        this.setButton(1, GuiUtils.createButtonItem(XMaterial.CHEST, ChatColor.BLUE + "Add Item"),
                 (event) -> {
                     event.gui.exit();
                     ChatPrompt.showPrompt(event.manager.getPlugin(), event.player, "Enter a new value to add:", response -> {
@@ -70,7 +70,7 @@ public class ConfigEditorListEditorGui extends SimplePagedGui {
         int i = 9;
         for (String item : values) {
             final int index = i - 9;
-            setButton(i++, GuiUtils.createButtonItem(CompatibleMaterial.PAPER, item, "Right-click to remove"), ClickType.RIGHT, (event) -> {
+            setButton(i++, GuiUtils.createButtonItem(XMaterial.PAPER, item, "Right-click to remove"), ClickType.RIGHT, (event) -> {
                 values.remove(index);
                 redraw();
             });

Core/src/main/java/com/craftaro/core/configuration/editor/PluginConfigGui.java

@@ -1,11 +1,11 @@
 package com.craftaro.core.configuration.editor;
 
 import com.craftaro.core.SongodaPlugin;
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.configuration.Config;
 import com.craftaro.core.gui.Gui;
 import com.craftaro.core.gui.GuiUtils;
 import com.craftaro.core.gui.SimplePagedGui;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.ChatColor;
 import org.bukkit.configuration.MemoryConfiguration;
 import org.bukkit.plugin.java.JavaPlugin;
@@ -79,18 +79,18 @@ public class PluginConfigGui extends SimplePagedGui {
     }
 
     private void init() {
-        this.blankItem = GuiUtils.getBorderItem(CompatibleMaterial.LIGHT_GRAY_STAINED_GLASS_PANE);
+        this.blankItem = GuiUtils.getBorderItem(XMaterial.LIGHT_GRAY_STAINED_GLASS_PANE);
 
         // decorate header
         this.setTitle(ChatColor.DARK_BLUE + plugin.getName() + " Plugin Config");
         this.setUseHeader(true);
-        headerBackItem = footerBackItem = GuiUtils.getBorderItem(CompatibleMaterial.GRAY_STAINED_GLASS_PANE.getItem());
+        headerBackItem = footerBackItem = GuiUtils.getBorderItem(XMaterial.GRAY_STAINED_GLASS_PANE.parseItem());
-        this.setButton(8, GuiUtils.createButtonItem(CompatibleMaterial.OAK_DOOR, "Exit"), (event) -> event.player.closeInventory());
+        this.setButton(8, GuiUtils.createButtonItem(XMaterial.OAK_DOOR, "Exit"), (event) -> event.player.closeInventory());
 
         // List out all config files that this plugin has
         int i = 9;
         for (Map.Entry<String, MemoryConfiguration> config : configs.entrySet()) {
-            this.setButton(i++, GuiUtils.createButtonItem(CompatibleMaterial.BOOK, ChatColor.YELLOW + config.getKey(), "Click to edit this config"),
+            this.setButton(i++, GuiUtils.createButtonItem(XMaterial.BOOK, ChatColor.YELLOW + config.getKey(), "Click to edit this config"),
                     (event) -> event.manager.showGUI(event.player, new ConfigEditorGui(event.player, plugin, this, config.getKey(), config.getValue())));
         }
     }

Core/src/main/java/com/craftaro/core/core/PluginInfo.java

@@ -1,7 +1,8 @@
 package com.craftaro.core.core;
 
-import com.craftaro.core.verification.ProductVerificationStatus;
 import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.craftaro.core.verification.ProductVerificationStatus;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.json.simple.JSONObject;
 
@@ -13,7 +14,7 @@ public final class PluginInfo {
     protected final JavaPlugin javaPlugin;
     protected final int songodaId;
     protected final String coreIcon;
-    protected final CompatibleMaterial icon;
+    protected final XMaterial icon;
     protected final String coreLibraryVersion;
     public final ProductVerificationStatus verificationStatus;
 
@@ -29,7 +30,7 @@ public final class PluginInfo {
         this.javaPlugin = javaPlugin;
         this.songodaId = songodaId;
         this.coreIcon = icon;
-        this.icon = CompatibleMaterial.getMaterial(icon);
+        this.icon = CompatibleMaterial.getMaterial(icon).orElse(XMaterial.STONE);
         this.coreLibraryVersion = coreLibraryVersion;
         this.verificationStatus = verificationStatus;
     }

Core/src/main/java/com/craftaro/core/core/SongodaCoreOverviewGUI.java

@@ -1,10 +1,10 @@
 package com.craftaro.core.core;
 
-import com.craftaro.core.configuration.editor.PluginConfigGui;
-import com.craftaro.core.gui.GuiUtils;
 import com.craftaro.core.SongodaCore;
-import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.craftaro.core.configuration.editor.PluginConfigGui;
 import com.craftaro.core.gui.Gui;
+import com.craftaro.core.gui.GuiUtils;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.ChatColor;
 import org.bukkit.event.inventory.ClickType;
 
@@ -24,7 +24,7 @@ final class SongodaCoreOverviewGUI extends Gui {
             final PluginInfo plugin = plugins.get(i);
 
             if (plugin.hasUpdate()) {
-                setButton(i, GuiUtils.createButtonItem(plugin.icon != null ? plugin.icon : CompatibleMaterial.STONE,
+                setButton(i, GuiUtils.createButtonItem(plugin.icon != null ? plugin.icon : XMaterial.STONE,
                                 ChatColor.GOLD + plugin.getJavaPlugin().getName(),
                                 ChatColor.GRAY + "Latest Version: " + plugin.getLatestVersion(),
                                 ChatColor.GRAY + "Installed Version: " + plugin.getJavaPlugin().getDescription().getVersion(),
@@ -42,7 +42,7 @@ final class SongodaCoreOverviewGUI extends Gui {
                 continue;
             }
 
-            setButton(i, GuiUtils.createButtonItem(plugin.icon != null ? plugin.icon : CompatibleMaterial.STONE,
+            setButton(i, GuiUtils.createButtonItem(plugin.icon != null ? plugin.icon : XMaterial.STONE,
                             ChatColor.GOLD + plugin.getJavaPlugin().getName(),
                             ChatColor.GRAY + "Installed Version: " + plugin.getJavaPlugin().getDescription().getVersion(),
                             "",

Core/src/main/java/com/craftaro/core/gui/AnvilGui.java

@@ -2,9 +2,9 @@ package com.craftaro.core.gui;
 
 import com.craftaro.core.gui.methods.Clickable;
 import com.craftaro.core.nms.Nms;
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.nms.anvil.AnvilCore;
 import com.craftaro.core.nms.anvil.CustomAnvil;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.ClickType;
 import org.bukkit.inventory.Inventory;
@@ -108,7 +108,7 @@ public class AnvilGui extends Gui {
 
             inventory.setItem(1, item);
         } else if (!acceptsItems) {
-            item = GuiUtils.createButtonItem(CompatibleMaterial.PAPER, " ", " ");
+            item = GuiUtils.createButtonItem(XMaterial.PAPER, " ", " ");
 
             cellItems.put(0, item);
             inventory.setItem(0, item);

Core/src/main/java/com/craftaro/core/gui/CustomizableGui.java

@@ -1,11 +1,12 @@
 package com.craftaro.core.gui;
 
+import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.craftaro.core.compatibility.ServerVersion;
 import com.craftaro.core.configuration.Config;
 import com.craftaro.core.configuration.ConfigSection;
 import com.craftaro.core.gui.methods.Clickable;
 import com.craftaro.core.utils.TextUtils;
-import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
-import com.craftaro.core.compatibility.ServerVersion;
 import org.bukkit.Bukkit;
 import org.bukkit.event.inventory.ClickType;
 import org.bukkit.inventory.Inventory;
@@ -49,7 +50,7 @@ public class CustomizableGui extends Gui {
             config.load();
 
             if (!config.isConfigurationSection("overrides")) {
-                config.setDefault("overrides.example.item", CompatibleMaterial.STONE.name(),
+                config.setDefault("overrides.example.item", XMaterial.STONE.name(),
                                 "This is the icon material you would like to replace",
                                 "the current material with.")
                         .setDefault("overrides.example.position", 5,
@@ -92,19 +93,19 @@ public class CustomizableGui extends Gui {
                                 section.getInt("col", -1),
                                 section.getBoolean("mirrorrow", false),
                                 section.getBoolean("mirrorcol", false),
-                                section.isSet("item") ? CompatibleMaterial.getMaterial(section.getString("item")) : null);
+                                section.isSet("item") ? CompatibleMaterial.getMaterial(section.getString("item")).get() : null);
                     } else {
                         customContent.addButton(section.getNodeKey(), section.getInt("row", -1),
                                 section.getInt("col", -1),
                                 section.getString("title", null),
                                 section.isSet("lore") ? section.getStringList("lore") : null,
-                                section.isSet("item") ? CompatibleMaterial.getMaterial(section.getString("item")) : null);
+                                section.isSet("item") ? CompatibleMaterial.getMaterial(section.getString("item")).get() : null);
                     }
                 } else {
                     customContent.addButton(section.getNodeKey(), section.getString("position", "-1"),
                             section.getString("title", null),
                             section.isSet("lore") ? section.getStringList("lore") : null,
-                            section.isSet("item") ? CompatibleMaterial.getMaterial(section.getString("item")) : null);
+                            section.isSet("item") ? CompatibleMaterial.getMaterial(section.getString("item")).get() : null);
                 }
             }
 
@@ -112,30 +113,30 @@ public class CustomizableGui extends Gui {
                 customContent.disableButton(disabled);
             }
         } else {
-            customContent = loadedGuis.get(guiKey);
+            this.customContent = loadedGuis.get(guiKey);
         }
 
         setPrivateDefaultAction(event -> {
             if (event.clickType == ClickType.SHIFT_RIGHT) {
-                activationCount++;
+                this.activationCount++;
             }
 
-            if (activationCount >= 8 && event.player.hasPermission("songoda.admin")) {
+            if (this.activationCount >= 8 && event.player.hasPermission("songoda.admin")) {
                 showGuiKeys = !showGuiKeys;
-                activationCount = 0;
+                this.activationCount = 0;
 
                 event.player.sendMessage("Gui keys " + (showGuiKeys ? "enabled" : "disabled") + ".");
             }
         });
 
-        if (customContent.isButtonCustomized("__DEFAULT__")) {
+        if (this.customContent.isButtonCustomized("__DEFAULT__")) {
-            blankItem = GuiUtils.getBorderItem(customContent.getCustomizedButton("__DEFAULT__").item);
+            this.blankItem = GuiUtils.getBorderItem(this.customContent.getCustomizedButton("__DEFAULT__").item);
         }
     }
 
     @NotNull
     public Gui setRows(int rows) {
-        int customRows = customContent.getRows();
+        int customRows = this.customContent.getRows();
 
         return super.setRows(customRows != -1 ? customRows : rows);
     }
@@ -153,13 +154,13 @@ public class CustomizableGui extends Gui {
     }
 
     private void applyCustomItems() {
-        for (CustomButton customButton : customContent.getCustomButtons().values()) {
+        for (CustomButton customButton : this.customContent.getCustomButtons().values()) {
             if (customButton instanceof MirrorFill) {
                 applyCustomItem(customButton);
             }
         }
 
-        for (CustomButton customButton : customContent.getCustomButtons().values()) {
+        for (CustomButton customButton : this.customContent.getCustomButtons().values()) {
             if (!(customButton instanceof MirrorFill)) {
                 applyCustomItem(customButton);
             }
@@ -190,7 +191,7 @@ public class CustomizableGui extends Gui {
 
         applyShowGuiKeys("__DEFAULT__", item);
 
-        if (customContent.isButtonCustomized("__DEFAULT__")) {
+        if (this.customContent.isButtonCustomized("__DEFAULT__")) {
             return this;
         }
 
@@ -201,14 +202,14 @@ public class CustomizableGui extends Gui {
     public Gui setItem(@NotNull String key, int cell, @Nullable ItemStack item) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
         applyShowGuiKeys(key, item);
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            CustomButton btn = customContent.getCustomizedButton(key);
+            CustomButton btn = this.customContent.getCustomizedButton(key);
             cells = btn.applyPosition(cell);
             btn.applyItem(item);
         }
@@ -222,21 +223,21 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui setItem(@NotNull String key, int row, int col, @Nullable ItemStack item) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
 
         return setItem(key, cell, item);
     }
 
     public Gui mirrorFill(@NotNull String key, int row, int col, boolean mirrorRow, boolean mirrorCol, @NotNull ItemStack item) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
         ItemStack newItem = item.clone();
         boolean isShow = applyShowGuiKeys(key, newItem);
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            CustomButton btn = customContent.getCustomizedButton(key);
+            CustomButton btn = this.customContent.getCustomizedButton(key);
             row = btn.applyPositionRow(row);
             col = btn.applyPositionCol(col);
 
@@ -258,12 +259,12 @@ public class CustomizableGui extends Gui {
     public Gui highlightItem(@NotNull String key, int cell) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -275,11 +276,11 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui highlightItem(@NotNull String key, int row, int col) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
 
         return highlightItem(key, cell);
     }
@@ -288,12 +289,12 @@ public class CustomizableGui extends Gui {
     public Gui removeHighlight(@NotNull String key, int cell) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -305,34 +306,34 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui removeHighlight(@NotNull String key, int row, int col) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
 
         return removeHighlight(key, cell);
     }
 
     @NotNull
     public Gui updateItemLore(@NotNull String key, int row, int col, @NotNull String... lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItemLore(key, col + row * inventoryType.columns, lore);
+        return updateItemLore(key, col + row * this.inventoryType.columns, lore);
     }
 
     @NotNull
     public Gui updateItemLore(@NotNull String key, int cell, @NotNull String... lore) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -344,23 +345,23 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui updateItemLore(@NotNull String key, int row, int col, @Nullable List<String> lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItemLore(key, col + row * inventoryType.columns, lore);
+        return updateItemLore(key, col + row * this.inventoryType.columns, lore);
     }
 
     @NotNull
     public Gui updateItemLore(@NotNull String key, int cell, @Nullable List<String> lore) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -372,23 +373,23 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui updateItemName(@NotNull String key, int row, int col, @Nullable String name) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItemName(key, col + row * inventoryType.columns, name);
+        return updateItemName(key, col + row * this.inventoryType.columns, name);
     }
 
     @NotNull
     public Gui updateItemName(@NotNull String key, int cell, @Nullable String name) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -400,16 +401,16 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui updateItem(@NotNull String key, int row, int col, @Nullable String name, @NotNull String... lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItem(key, col + row * inventoryType.columns, name, lore);
+        return updateItem(key, col + row * this.inventoryType.columns, name, lore);
     }
 
     @NotNull
     public Gui updateItem(@NotNull String key, int cell, @Nullable String name, @NotNull String... lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
@@ -418,25 +419,25 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui updateItem(@NotNull String key, int row, int col, @Nullable String name, @Nullable List<String> lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItem(key, col + row * inventoryType.columns, name, lore);
+        return updateItem(key, col + row * this.inventoryType.columns, name, lore);
     }
 
     @NotNull
     public Gui updateItem(@NotNull String key, int cell, @NotNull String name, @Nullable List<String> lore) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
         lore = applyShowGuiKeys(key, lore);
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -448,23 +449,23 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui updateItem(@NotNull String key, int row, int col, @NotNull ItemStack itemTo, @Nullable String title, @NotNull String... lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItem(key, col + row * inventoryType.columns, itemTo, title, lore);
+        return updateItem(key, col + row * this.inventoryType.columns, itemTo, title, lore);
     }
 
     @NotNull
     public Gui updateItem(@NotNull String key, int cell, @NotNull ItemStack itemTo, @Nullable String title, @NotNull String... lore) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -475,24 +476,24 @@ public class CustomizableGui extends Gui {
     }
 
     @NotNull
-    public Gui updateItem(@NotNull String key, int row, int col, @NotNull CompatibleMaterial itemTo, @Nullable String title, @NotNull String... lore) {
+    public Gui updateItem(@NotNull String key, int row, int col, @NotNull XMaterial itemTo, @Nullable String title, @NotNull String... lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItem(key, col + row * inventoryType.columns, itemTo, title, lore);
+        return updateItem(key, col + row * this.inventoryType.columns, itemTo, title, lore);
     }
 
     @NotNull
-    public Gui updateItem(@NotNull String key, int cell, @NotNull CompatibleMaterial itemTo, @Nullable String title, @Nullable String... lore) {
+    public Gui updateItem(@NotNull String key, int cell, @NotNull XMaterial itemTo, @Nullable String title, @Nullable String... lore) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -504,23 +505,23 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui updateItem(@NotNull String key, int row, int col, @NotNull ItemStack itemTo, @Nullable String title, @Nullable List<String> lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItem(key, col + row * inventoryType.columns, itemTo, title, lore);
+        return updateItem(key, col + row * this.inventoryType.columns, itemTo, title, lore);
     }
 
     @NotNull
     public Gui updateItem(@NotNull String key, int cell, @NotNull ItemStack itemTo, @Nullable String title, @Nullable List<String> lore) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -531,24 +532,24 @@ public class CustomizableGui extends Gui {
     }
 
     @NotNull
-    public Gui updateItem(@NotNull String key, int row, int col, @NotNull CompatibleMaterial itemTo, @Nullable String title, @Nullable List<String> lore) {
+    public Gui updateItem(@NotNull String key, int row, int col, @NotNull XMaterial itemTo, @Nullable String title, @Nullable List<String> lore) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return updateItem(key, col + row * inventoryType.columns, itemTo, title, lore);
+        return updateItem(key, col + row * this.inventoryType.columns, itemTo, title, lore);
     }
 
     @NotNull
-    public Gui updateItem(@NotNull String key, int cell, @NotNull CompatibleMaterial itemTo, @Nullable String title, @Nullable List<String> lore) {
+    public Gui updateItem(@NotNull String key, int cell, @NotNull XMaterial itemTo, @Nullable String title, @Nullable List<String> lore) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -560,7 +561,7 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui setAction(@NotNull String key, int cell, @Nullable Clickable action) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
@@ -571,18 +572,18 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui setAction(@NotNull String key, int row, int col, @Nullable Clickable action) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        setConditional(key, col + row * inventoryType.columns, null, action);
+        setConditional(key, col + row * this.inventoryType.columns, null, action);
 
         return this;
     }
 
     @NotNull
     public Gui setAction(@NotNull String key, int cell, @Nullable ClickType type, @Nullable Clickable action) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
@@ -593,11 +594,11 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui setAction(@NotNull String key, int row, int col, @Nullable ClickType type, @Nullable Clickable action) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        setConditional(key, col + row * inventoryType.columns, type, action);
+        setConditional(key, col + row * this.inventoryType.columns, type, action);
 
         return this;
     }
@@ -606,12 +607,12 @@ public class CustomizableGui extends Gui {
     public Gui clearActions(@NotNull String key, int cell) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -623,25 +624,25 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui clearActions(@NotNull String key, int row, int col) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return clearActions(key, col + row * inventoryType.columns);
+        return clearActions(key, col + row * this.inventoryType.columns);
     }
 
     @NotNull
     public Gui setButton(@NotNull String key, int cell, ItemStack item, @Nullable Clickable action) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
         applyShowGuiKeys(key, item);
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            CustomButton btn = customContent.getCustomizedButton(key);
+            CustomButton btn = this.customContent.getCustomizedButton(key);
             cells = btn.applyPosition(cell);
             btn.applyItem(item);
         }
@@ -656,25 +657,25 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui setButton(@NotNull String key, int row, int col, @Nullable ItemStack item, @Nullable Clickable action) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return setButton(key, col + row * inventoryType.columns, item, action);
+        return setButton(key, col + row * this.inventoryType.columns, item, action);
     }
 
     @NotNull
     public Gui setButton(@NotNull String key, int cell, @Nullable ItemStack item, @Nullable ClickType type, @Nullable Clickable action) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
         applyShowGuiKeys(key, item);
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            CustomButton btn = customContent.getCustomizedButton(key);
+            CustomButton btn = this.customContent.getCustomizedButton(key);
             cells = btn.applyPosition(cell);
             btn.applyItem(item);
         }
@@ -688,22 +689,22 @@ public class CustomizableGui extends Gui {
 
     @NotNull
     public Gui setButton(@NotNull String key, int row, int col, @Nullable ItemStack item, @Nullable ClickType type, @Nullable Clickable action) {
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return this;
         }
 
-        return setButton(key, col + row + inventoryType.columns, item, type, action);
+        return setButton(key, col + row + this.inventoryType.columns, item, type, action);
     }
 
     protected void setConditional(@NotNull String key, int cell, @Nullable ClickType type, @Nullable Clickable action) {
         List<Integer> cells = Collections.singletonList(cell);
 
-        if (customContent.isButtonDisabled(key)) {
+        if (this.customContent.isButtonDisabled(key)) {
             return;
         }
 
-        if (customContent.isButtonCustomized(key)) {
+        if (this.customContent.isButtonCustomized(key)) {
-            cells = customContent.getCustomizedButton(key).applyPosition(cell);
+            cells = this.customContent.getCustomizedButton(key).applyPosition(cell);
         }
 
         for (int c : cells) {
@@ -714,8 +715,8 @@ public class CustomizableGui extends Gui {
     public Gui setNextPage(ItemStack item) {
         applyShowGuiKeys("__NEXT__", item);
 
-        if (customContent.isButtonCustomized("__NEXT__")) {
+        if (this.customContent.isButtonCustomized("__NEXT__")) {
-            customContent.getCustomizedButton("__NEXT__").applyItem(item);
+            this.customContent.getCustomizedButton("__NEXT__").applyItem(item);
         }
 
         return super.setNextPage(item);
@@ -724,8 +725,8 @@ public class CustomizableGui extends Gui {
     public Gui setPrevPage(ItemStack item) {
         applyShowGuiKeys("__PREV__", item);
 
-        if (customContent.isButtonCustomized("__PREV__")) {
+        if (this.customContent.isButtonCustomized("__PREV__")) {
-            customContent.getCustomizedButton("__PREV__").applyItem(item);
+            this.customContent.getCustomizedButton("__PREV__").applyItem(item);
         }
 
         return super.setPrevPage(item);
@@ -737,8 +738,8 @@ public class CustomizableGui extends Gui {
 
         applyShowGuiKeys("__NEXT__", item);
 
-        if (customContent.isButtonCustomized("__NEXT__")) {
+        if (this.customContent.isButtonCustomized("__NEXT__")) {
-            CustomButton btn = customContent.getCustomizedButton("__NEXT__");
+            CustomButton btn = this.customContent.getCustomizedButton("__NEXT__");
             cells = btn.applyPosition(cell);
             btn.applyItem(item);
         }
@@ -754,7 +755,7 @@ public class CustomizableGui extends Gui {
     public Gui setNextPage(int row, int col, @NotNull ItemStack item) {
         applyShowGuiKeys("__NEXT__", item);
 
-        return setNextPage(col + row * inventoryType.columns, item);
+        return setNextPage(col + row * this.inventoryType.columns, item);
     }
 
     @NotNull
@@ -763,8 +764,8 @@ public class CustomizableGui extends Gui {
 
         applyShowGuiKeys("__PREV__", item);
 
-        if (customContent.isButtonCustomized("__PREV__")) {
+        if (this.customContent.isButtonCustomized("__PREV__")) {
-            CustomButton btn = customContent.getCustomizedButton("__PREV__");
+            CustomButton btn = this.customContent.getCustomizedButton("__PREV__");
             cells = btn.applyPosition(cell);
             btn.applyItem(item);
         }
@@ -780,7 +781,7 @@ public class CustomizableGui extends Gui {
     public Gui setPrevPage(int row, int col, @NotNull ItemStack item) {
         applyShowGuiKeys("__PREV__", item);
 
-        return setPrevPage(col + row * inventoryType.columns, item);
+        return setPrevPage(col + row * this.inventoryType.columns, item);
     }
 
     private boolean applyShowGuiKeys(String key, ItemStack item) {
@@ -826,9 +827,9 @@ public class CustomizableGui extends Gui {
         private final String title;
         private final List<String> lore;
 
-        private final CompatibleMaterial item;
+        private final XMaterial item;
 
-        public CustomButton(String key, List<Integer> positions, String title, List<String> lore, CompatibleMaterial item) {
+        public CustomButton(String key, List<Integer> positions, String title, List<String> lore, XMaterial item) {
             this.key = key;
             this.positions = positions;
             this.row = -1;
@@ -838,7 +839,7 @@ public class CustomizableGui extends Gui {
             this.lore = lore;
         }
 
-        public CustomButton(String key, int row, int col, String title, List<String> lore, CompatibleMaterial item) {
+        public CustomButton(String key, int row, int col, String title, List<String> lore, XMaterial item) {
             this.key = key;
             this.positions = null;
             this.row = row;
@@ -849,7 +850,7 @@ public class CustomizableGui extends Gui {
         }
 
         public String getKey() {
-            return key;
+            return this.key;
         }
 
         public boolean applyItem(ItemStack item) {
@@ -857,7 +858,7 @@ public class CustomizableGui extends Gui {
                 return false;
             }
 
-            item.setType(this.item.getMaterial());
+            item.setType(this.item.parseMaterial());
 
             if (ServerVersion.isServerVersionAtOrBelow(ServerVersion.V1_13)) {
                 item.setDurability(this.item.getData());
@@ -869,7 +870,7 @@ public class CustomizableGui extends Gui {
         }
 
         public ItemStack createItem() {
-            ItemStack item = this.item.getItem();
+            ItemStack item = this.item.parseItem();
             applyMeta(item);
 
             return item;
@@ -878,23 +879,23 @@ public class CustomizableGui extends Gui {
         private void applyMeta(ItemStack item) {
             ItemMeta meta = item.getItemMeta();
 
-            if (title != null) {
+            if (this.title != null) {
-                meta.setDisplayName(TextUtils.formatText(title));
+                meta.setDisplayName(TextUtils.formatText(this.title));
             }
 
-            if (lore != null) {
+            if (this.lore != null) {
-                meta.setLore(TextUtils.formatText(lore));
+                meta.setLore(TextUtils.formatText(this.lore));
             }
 
             item.setItemMeta(meta);
         }
 
         public List<Integer> applyPosition(int cell) {
-            if (row != -1 && col != -1) {
+            if (this.row != -1 && this.col != -1) {
-                return Collections.singletonList(col + row * inventoryType.columns);
+                return Collections.singletonList(this.col + this.row * CustomizableGui.this.inventoryType.columns);
             }
 
-            return positions == null ? Collections.singletonList(cell) : positions;
+            return this.positions == null ? Collections.singletonList(cell) : this.positions;
         }
 
         public int applyPositionRow(int row) {
@@ -910,7 +911,7 @@ public class CustomizableGui extends Gui {
         private final boolean mirrorRow;
         private final boolean mirrorCol;
 
-        public MirrorFill(String key, int row, int col, boolean mirrorRow, boolean mirrorCol, CompatibleMaterial item) {
+        public MirrorFill(String key, int row, int col, boolean mirrorRow, boolean mirrorCol, XMaterial item) {
             super(key, row, col, null, null, item);
 
             this.mirrorRow = mirrorRow;
@@ -918,11 +919,11 @@ public class CustomizableGui extends Gui {
         }
 
         public boolean isMirrorRow() {
-            return mirrorRow;
+            return this.mirrorRow;
         }
 
         public boolean isMirrorCol() {
-            return mirrorCol;
+            return this.mirrorCol;
         }
     }
 
@@ -939,22 +940,22 @@ public class CustomizableGui extends Gui {
         }
 
         public String getGuiKey() {
-            return guiKey;
+            return this.guiKey;
         }
 
         public CustomButton getCustomizedButton(String key) {
-            return customizedButtons.get(key);
+            return this.customizedButtons.get(key);
         }
 
         public CustomButton getCustomButton(String key) {
-            return customizedButtons.get(key);
+            return this.customizedButtons.get(key);
         }
 
         public Map<String, CustomButton> getCustomButtons() {
-            return Collections.unmodifiableMap(customButtons);
+            return Collections.unmodifiableMap(this.customButtons);
         }
 
-        public void addButton(String key, String position, String title, List<String> lore, CompatibleMaterial item) {
+        public void addButton(String key, String position, String title, List<String> lore, XMaterial item) {
             List<Integer> positions = Arrays.stream(position.split(","))
                     .map(Integer::parseInt)
                     .collect(Collectors.toList());
@@ -962,49 +963,49 @@ public class CustomizableGui extends Gui {
             CustomButton customButton = new CustomButton(key, positions, title, lore, item);
 
             if (key.startsWith("custom_")) {
-                customButtons.put(key, customButton);
+                this.customButtons.put(key, customButton);
                 return;
             }
 
-            customizedButtons.put(key, customButton);
+            this.customizedButtons.put(key, customButton);
         }
 
-        public void addButton(String key, int row, int col, String title, List<String> lore, CompatibleMaterial item) {
+        public void addButton(String key, int row, int col, String title, List<String> lore, XMaterial item) {
             CustomButton customButton = new CustomButton(key, row, col, title, lore, item);
 
             if (key.startsWith("custom_")) {
-                customButtons.put(key, customButton);
+                this.customButtons.put(key, customButton);
                 return;
             }
 
-            customizedButtons.put(key, customButton);
+            this.customizedButtons.put(key, customButton);
         }
 
-        public void addButton(String key, int row, int col, boolean mirrorRow, boolean mirrorCol, CompatibleMaterial item) {
+        public void addButton(String key, int row, int col, boolean mirrorRow, boolean mirrorCol, XMaterial item) {
             MirrorFill mirrorFill = new MirrorFill(key, row, col, mirrorRow, mirrorCol, item);
 
             if (key.startsWith("custom_")) {
-                customButtons.put(key, mirrorFill);
+                this.customButtons.put(key, mirrorFill);
                 return;
             }
 
-            customizedButtons.put(key, mirrorFill);
+            this.customizedButtons.put(key, mirrorFill);
         }
 
         public boolean isButtonCustomized(String key) {
-            return customizedButtons.containsKey(key);
+            return this.customizedButtons.containsKey(key);
         }
 
         public void disableButton(String button) {
-            disabledButtons.add(button);
+            this.disabledButtons.add(button);
         }
 
         public boolean isButtonDisabled(String button) {
-            return disabledButtons.contains(button);
+            return this.disabledButtons.contains(button);
         }
 
         public int getRows() {
-            return rows;
+            return this.rows;
         }
 
         public void setRows(int rows) {

Core/src/main/java/com/craftaro/core/gui/DoubleGui.java

@@ -8,7 +8,7 @@ import com.craftaro.core.gui.methods.Droppable;
 import com.craftaro.core.gui.methods.Openable;
 import com.craftaro.core.gui.methods.Pagable;
 import com.craftaro.core.utils.ItemUtils;
-import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.ClickType;
@@ -32,31 +32,31 @@ public class DoubleGui extends Gui {
 
     public DoubleGui() {
         super(GuiType.STANDARD);
-        allowDropItems = false;
+        this.allowDropItems = false;
     }
 
     public DoubleGui(GuiType type) {
         super(type);
-        allowDropItems = false;
+        this.allowDropItems = false;
     }
 
     public DoubleGui(int rows) {
         super(rows);
-        allowDropItems = false;
+        this.allowDropItems = false;
     }
 
     public DoubleGui(int rows, Gui parent) {
         super(rows, parent);
-        allowDropItems = false;
+        this.allowDropItems = false;
     }
 
     public DoubleGui(Gui parent) {
         super(parent);
-        allowDropItems = false;
+        this.allowDropItems = false;
     }
 
     public int getPlayerRows() {
-        return playerRows;
+        return this.playerRows;
     }
 
     // 9  -> 0  -> 54
@@ -78,29 +78,29 @@ public class DoubleGui extends Gui {
     }
 
     public DoubleGui setPlayerUnlocked(int cell) {
-        unlockedCells.put(invOffset(cell), true);
+        this.unlockedCells.put(invOffset(cell), true);
         return this;
     }
 
     public DoubleGui setPlayerUnlocked(int row, int col) {
-        unlockedCells.put(invOffset(col + row * 9), true);
+        this.unlockedCells.put(invOffset(col + row * 9), true);
         return this;
     }
 
     public DoubleGui setPlayerUnlocked(int cell, boolean open) {
-        unlockedCells.put(invOffset(cell), open);
+        this.unlockedCells.put(invOffset(cell), open);
         return this;
     }
 
     public DoubleGui setPlayerUnlocked(int row, int col, boolean open) {
-        unlockedCells.put(invOffset(col + row * 9), open);
+        this.unlockedCells.put(invOffset(col + row * 9), open);
         return this;
     }
 
     public DoubleGui setPlayerUnlockedRange(int cellFirst, int cellLast) {
         final int last = invOffset(cellLast);
         for (int cell = invOffset(cellFirst); cell <= last; ++cell) {
-            unlockedCells.put(cell, true);
+            this.unlockedCells.put(cell, true);
         }
         return this;
     }
@@ -109,7 +109,7 @@ public class DoubleGui extends Gui {
         final int last = invOffset(cellLast);
 
         for (int cell = invOffset(cellFirst); cell <= last; ++cell) {
-            unlockedCells.put(cell, open);
+            this.unlockedCells.put(cell, open);
         }
 
         return this;
@@ -119,7 +119,7 @@ public class DoubleGui extends Gui {
         final int last = invOffset(cellColLast + cellRowLast * 9);
 
         for (int cell = invOffset(cellColFirst + cellRowFirst * 9); cell <= last; ++cell) {
-            unlockedCells.put(cell, true);
+            this.unlockedCells.put(cell, true);
         }
 
         return this;
@@ -129,19 +129,19 @@ public class DoubleGui extends Gui {
         final int last = invOffset(cellColLast + cellRowLast * 9);
 
         for (int cell = invOffset(cellColFirst + cellRowFirst * 9); cell <= last; ++cell) {
-            unlockedCells.put(cell, open);
+            this.unlockedCells.put(cell, open);
         }
 
         return this;
     }
 
     public DoubleGui setPlayerItem(int cell, ItemStack item) {
-        cellItems.put(invOffset(cell), item);
+        this.cellItems.put(invOffset(cell), item);
 
-        if (open && cell >= 0 && cell < 36) {
+        if (this.open && cell >= 0 && cell < 36) {
             cell = cell >= 27 ? cell - 27 : cell + 9;
 
-            for (HumanEntity e : inventory.getViewers()) {
+            for (HumanEntity e : this.inventory.getViewers()) {
                 e.getInventory().setItem(cell, item);
             }
         }
@@ -151,12 +151,12 @@ public class DoubleGui extends Gui {
 
     public DoubleGui setPlayerItem(int row, int col, ItemStack item) {
         int cell = col + row * 9;
-        cellItems.put(invOffset(cell), item);
+        this.cellItems.put(invOffset(cell), item);
 
-        if (open && cell >= 0 && cell < 36) {
+        if (this.open && cell >= 0 && cell < 36) {
             cell = cell >= 27 ? cell - 27 : cell + 9;
 
-            for (HumanEntity e : inventory.getViewers()) {
+            for (HumanEntity e : this.inventory.getViewers()) {
                 e.getInventory().setItem(cell, item);
             }
         }
@@ -166,7 +166,7 @@ public class DoubleGui extends Gui {
 
     public DoubleGui highlightPlayerItem(int cell) {
         final int invCell = invOffset(cell);
-        ItemStack item = cellItems.get(invCell);
+        ItemStack item = this.cellItems.get(invCell);
 
         if (item != null) {
             setPlayerItem(cell, ItemUtils.addGlow(item));
@@ -179,7 +179,7 @@ public class DoubleGui extends Gui {
         final int cell = col + row * 9;
         final int invCell = invOffset(cell);
 
-        ItemStack item = cellItems.get(invCell);
+        ItemStack item = this.cellItems.get(invCell);
         if (item != null) {
             setPlayerItem(cell, ItemUtils.addGlow(item));
         }
@@ -244,13 +244,13 @@ public class DoubleGui extends Gui {
     }
 
     public DoubleGui clearPlayerActions(int cell) {
-        conditionalButtons.remove(invOffset(cell));
+        this.conditionalButtons.remove(invOffset(cell));
         return this;
     }
 
     public DoubleGui clearPlayerActions(int row, int col) {
         final int cell = invOffset(col + row * 9);
-        conditionalButtons.remove(cell);
+        this.conditionalButtons.remove(cell);
 
         return this;
     }
@@ -290,7 +290,7 @@ public class DoubleGui extends Gui {
     @Override
     protected boolean onClickPlayerInventory(GuiManager manager, Player player, Inventory openInv, InventoryClickEvent event) {
         final int cell = event.getSlot(), offsetCell = clickOffset(cell);
-        Map<ClickType, Clickable> conditionals = conditionalButtons.get(offsetCell);
+        Map<ClickType, Clickable> conditionals = this.conditionalButtons.get(offsetCell);
         Clickable button;
 
         if (conditionals != null
@@ -301,15 +301,15 @@ public class DoubleGui extends Gui {
             return false;
         }
 
-        event.setCancelled(unlockedCells.entrySet().stream().noneMatch(e -> offsetCell == e.getKey() && e.getValue()));
+        event.setCancelled(this.unlockedCells.entrySet().stream().noneMatch(e -> offsetCell == e.getKey() && e.getValue()));
 
         return true;
     }
 
     @Override
     protected boolean onClickOutside(GuiManager manager, Player player, InventoryClickEvent event) {
-        if (dropper != null) {
+        if (this.dropper != null) {
-            return dropper.onDrop(new GuiDropItemEvent(manager, this, player, event));
+            return this.dropper.onDrop(new GuiDropItemEvent(manager, this, player, event));
         }
 
         // do not allow by default
@@ -319,7 +319,7 @@ public class DoubleGui extends Gui {
     @Override
     public void onOpen(GuiManager manager, Player player) {
         // replace the player's inventory
-        if (startStashed) {
+        if (this.startStashed) {
             stashItems(player);
         }
 
@@ -337,15 +337,15 @@ public class DoubleGui extends Gui {
     }
 
     protected void restoreStash(Player player) {
-        if (stash.containsKey(player)) {
+        if (this.stash.containsKey(player)) {
-            player.getInventory().setContents(stash.remove(player));
+            player.getInventory().setContents(this.stash.remove(player));
             player.updateInventory();
         }
     }
 
     protected void stashItems(Player player) {
-        if (!stash.containsKey(player)) {
+        if (!this.stash.containsKey(player)) {
-            stash.put(player, player.getInventory().getContents().clone());
+            this.stash.put(player, player.getInventory().getContents().clone());
             player.getInventory().clear();
         }
     }
@@ -461,12 +461,12 @@ public class DoubleGui extends Gui {
     }
 
     @Override
-    public DoubleGui updateItem(int row, int col, CompatibleMaterial itemTo, String title, String... lore) {
+    public DoubleGui updateItem(int row, int col, XMaterial itemTo, String title, String... lore) {
         return (DoubleGui) super.updateItem(col + row * 9, itemTo, title, lore);
     }
 
     @Override
-    public DoubleGui updateItem(int cell, CompatibleMaterial itemTo, String title, String... lore) {
+    public DoubleGui updateItem(int cell, XMaterial itemTo, String title, String... lore) {
         return (DoubleGui) super.updateItem(cell, itemTo, title, lore);
     }
 
@@ -481,12 +481,12 @@ public class DoubleGui extends Gui {
     }
 
     @Override
-    public DoubleGui updateItem(int row, int col, CompatibleMaterial itemTo, String title, List<String> lore) {
+    public DoubleGui updateItem(int row, int col, XMaterial itemTo, String title, List<String> lore) {
         return (DoubleGui) super.updateItem(col + row * 9, itemTo, title, lore);
     }
 
     @Override
-    public DoubleGui updateItem(int cell, CompatibleMaterial itemTo, String title, List<String> lore) {
+    public DoubleGui updateItem(int cell, XMaterial itemTo, String title, List<String> lore) {
         return (DoubleGui) super.updateItem(cell, itemTo, title, lore);
     }
 

Core/src/main/java/com/craftaro/core/gui/Gui.java

@@ -1,5 +1,6 @@
 package com.craftaro.core.gui;
 
+import com.craftaro.core.compatibility.ServerVersion;
 import com.craftaro.core.gui.events.GuiClickEvent;
 import com.craftaro.core.gui.events.GuiCloseEvent;
 import com.craftaro.core.gui.events.GuiDropItemEvent;
@@ -11,9 +12,8 @@ import com.craftaro.core.gui.methods.Droppable;
 import com.craftaro.core.gui.methods.Openable;
 import com.craftaro.core.gui.methods.Pagable;
 import com.craftaro.core.utils.ItemUtils;
-import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
-import com.craftaro.core.compatibility.CompatibleSound;
+import com.cryptomorin.xseries.XSound;
-import com.craftaro.core.compatibility.ServerVersion;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.ClickType;
@@ -50,7 +50,7 @@ public class Gui {
     protected ItemStack nextPageItem, prevPageItem;
     protected ItemStack nextPage, prevPage;
     protected Gui parent = null;
-    protected static ItemStack AIR = new ItemStack(Material.AIR);
+    protected static final ItemStack AIR = new ItemStack(Material.AIR);
 
     protected GuiManager guiManager;
     protected boolean open = false;
@@ -60,7 +60,7 @@ public class Gui {
     protected Closable closer = null;
     protected Droppable dropper = null;
     protected Pagable pager = null;
-    protected CompatibleSound defaultSound = CompatibleSound.UI_BUTTON_CLICK;
+    protected XSound defaultSound = XSound.UI_BUTTON_CLICK;
 
     public Gui() {
         this.rows = 3;
@@ -69,6 +69,7 @@ public class Gui {
     public Gui(@NotNull GuiType type) {
         this.inventoryType = type;
 
+
         switch (type) {
             case HOPPER:
             case DISPENSER:
@@ -95,11 +96,11 @@ public class Gui {
 
     @NotNull
     public List<Player> getPlayers() {
-        if (inventory == null) {
+        if (this.inventory == null) {
             return Collections.emptyList();
         }
 
-        return inventory.getViewers().stream()
+        return this.inventory.getViewers().stream()
                 .filter(Player.class::isInstance)
                 .map(Player.class::cast)
                 .collect(Collectors.toList());
@@ -107,15 +108,15 @@ public class Gui {
 
     public boolean isOpen() {
         // double check
-        if (inventory != null && inventory.getViewers().isEmpty()) {
+        if (this.inventory != null && this.inventory.getViewers().isEmpty()) {
-            open = false;
+            this.open = false;
         }
 
-        return open;
+        return this.open;
     }
 
     public boolean getAcceptsItems() {
-        return acceptsItems;
+        return this.acceptsItems;
     }
 
     public Gui setAcceptsItems(boolean acceptsItems) {
@@ -128,7 +129,7 @@ public class Gui {
      * will be cleared
      */
     public boolean getAllowDrops() {
-        return allowDropItems;
+        return this.allowDropItems;
     }
 
     /**
@@ -141,7 +142,7 @@ public class Gui {
     }
 
     public boolean getAllowClose() {
-        return allowClose;
+        return this.allowClose;
     }
 
     public Gui setAllowClose(boolean allow) {
@@ -154,10 +155,10 @@ public class Gui {
      * GUIs
      */
     public void exit() {
-        allowClose = true;
+        this.allowClose = true;
-        open = false;
+        this.open = false;
 
-        inventory.getViewers().stream()
+        this.inventory.getViewers().stream()
                 .filter(Player.class::isInstance)
                 .map(Player.class::cast)
                 .collect(Collectors.toList())
@@ -168,9 +169,9 @@ public class Gui {
      * Close the GUI as if the player closed it normally
      */
     public void close() {
-        allowClose = true;
+        this.allowClose = true;
 
-        inventory.getViewers().stream()
+        this.inventory.getViewers().stream()
                 .filter(Player.class::isInstance)
                 .map(Player.class::cast)
                 .collect(Collectors.toList())
@@ -179,19 +180,19 @@ public class Gui {
 
     @NotNull
     public GuiType getType() {
-        return inventoryType;
+        return this.inventoryType;
     }
 
     @NotNull
     public Gui setUnlocked(int cell) {
-        unlockedCells.put(cell, true);
+        this.unlockedCells.put(cell, true);
         return this;
     }
 
     @NotNull
     public Gui setUnlocked(int row, int col) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
-        unlockedCells.put(cell, true);
+        this.unlockedCells.put(cell, true);
 
         return this;
     }
@@ -199,7 +200,7 @@ public class Gui {
     @NotNull
     public Gui setUnlockedRange(int cellFirst, int cellLast) {
         for (int cell = cellFirst; cell <= cellLast; ++cell) {
-            unlockedCells.put(cell, true);
+            this.unlockedCells.put(cell, true);
         }
 
         return this;
@@ -208,7 +209,7 @@ public class Gui {
     @NotNull
     public Gui setUnlockedRange(int cellFirst, int cellLast, boolean open) {
         for (int cell = cellFirst; cell <= cellLast; ++cell) {
-            unlockedCells.put(cell, open);
+            this.unlockedCells.put(cell, open);
         }
 
         return this;
@@ -216,10 +217,10 @@ public class Gui {
 
     @NotNull
     public Gui setUnlockedRange(int cellRowFirst, int cellColFirst, int cellRowLast, int cellColLast) {
-        final int last = cellColLast + cellRowLast * inventoryType.columns;
+        final int last = cellColLast + cellRowLast * this.inventoryType.columns;
 
-        for (int cell = cellColFirst + cellRowFirst * inventoryType.columns; cell <= last; ++cell) {
+        for (int cell = cellColFirst + cellRowFirst * this.inventoryType.columns; cell <= last; ++cell) {
-            unlockedCells.put(cell, true);
+            this.unlockedCells.put(cell, true);
         }
 
         return this;
@@ -227,10 +228,10 @@ public class Gui {
 
     @NotNull
     public Gui setUnlockedRange(int cellRowFirst, int cellColFirst, int cellRowLast, int cellColLast, boolean open) {
-        final int last = cellColLast + cellRowLast * inventoryType.columns;
+        final int last = cellColLast + cellRowLast * this.inventoryType.columns;
 
-        for (int cell = cellColFirst + cellRowFirst * inventoryType.columns; cell <= last; ++cell) {
+        for (int cell = cellColFirst + cellRowFirst * this.inventoryType.columns; cell <= last; ++cell) {
-            unlockedCells.put(cell, open);
+            this.unlockedCells.put(cell, open);
         }
 
         return this;
@@ -238,14 +239,14 @@ public class Gui {
 
     @NotNull
     public Gui setUnlocked(int cell, boolean open) {
-        unlockedCells.put(cell, open);
+        this.unlockedCells.put(cell, open);
         return this;
     }
 
     @NotNull
     public Gui setUnlocked(int row, int col, boolean open) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
-        unlockedCells.put(cell, open);
+        this.unlockedCells.put(cell, open);
 
         return this;
     }
@@ -259,19 +260,19 @@ public class Gui {
         if (!title.equals(this.title)) {
             this.title = title;
 
-            if (inventory != null) {
+            if (this.inventory != null) {
                 // update active inventory
                 List<Player> toUpdate = getPlayers();
-                boolean isAllowClose = allowClose;
+                boolean isAllowClose = this.allowClose;
                 exit();
 
-                Inventory oldInv = inventory;
+                Inventory oldInv = this.inventory;
                 createInventory();
-                inventory.setContents(oldInv.getContents());
+                this.inventory.setContents(oldInv.getContents());
 
-                toUpdate.forEach(player -> player.openInventory(inventory));
+                toUpdate.forEach(player -> player.openInventory(this.inventory));
 
-                allowClose = isAllowClose;
+                this.allowClose = isAllowClose;
             }
         }
 
@@ -279,12 +280,12 @@ public class Gui {
     }
 
     public int getRows() {
-        return rows;
+        return this.rows;
     }
 
     @NotNull
     public Gui setRows(int rows) {
-        switch (inventoryType) {
+        switch (this.inventoryType) {
             case HOPPER:
             case DISPENSER:
                 break;
@@ -298,53 +299,53 @@ public class Gui {
 
     @NotNull
     public Gui setDefaultAction(@Nullable Clickable action) {
-        defaultClicker = action;
+        this.defaultClicker = action;
         return this;
     }
 
     @NotNull
     protected Gui setPrivateDefaultAction(@Nullable Clickable action) {
-        privateDefaultClicker = action;
+        this.privateDefaultClicker = action;
         return this;
     }
 
     @NotNull
     public Gui setDefaultItem(@Nullable ItemStack item) {
-        blankItem = item;
+        this.blankItem = item;
         return this;
     }
 
     @Nullable
     public ItemStack getDefaultItem() {
-        return blankItem;
+        return this.blankItem;
     }
 
     @Nullable
     public ItemStack getItem(int cell) {
-        if (inventory != null && unlockedCells.getOrDefault(cell, false)) {
+        if (this.inventory != null && this.unlockedCells.getOrDefault(cell, false)) {
-            return inventory.getItem(cell);
+            return this.inventory.getItem(cell);
         }
 
-        return cellItems.get(cell);
+        return this.cellItems.get(cell);
     }
 
     @Nullable
     public ItemStack getItem(int row, int col) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
 
-        if (inventory != null && unlockedCells.getOrDefault(cell, false)) {
+        if (this.inventory != null && this.unlockedCells.getOrDefault(cell, false)) {
-            return inventory.getItem(cell);
+            return this.inventory.getItem(cell);
         }
 
-        return cellItems.get(cell);
+        return this.cellItems.get(cell);
     }
 
     @NotNull
     public Gui setItem(int cell, @Nullable ItemStack item) {
-        cellItems.put(cell, item);
+        this.cellItems.put(cell, item);
 
-        if (inventory != null && cell >= 0 && cell < inventory.getSize()) {
+        if (this.inventory != null && cell >= 0 && cell < this.inventory.getSize()) {
-            inventory.setItem(cell, item);
+            this.inventory.setItem(cell, item);
         }
 
         return this;
@@ -352,7 +353,7 @@ public class Gui {
 
     @NotNull
     public Gui setItem(int row, int col, @Nullable ItemStack item) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
         return setItem(cell, item);
     }
 
@@ -361,7 +362,7 @@ public class Gui {
         setItem(row, col, item);
 
         if (mirrorRow) {
-            setItem(rows - row - 1, col, item);
+            setItem(this.rows - row - 1, col, item);
         }
 
         if (mirrorCol) {
@@ -369,7 +370,7 @@ public class Gui {
         }
 
         if (mirrorRow && mirrorCol) {
-            setItem(rows - row - 1, 8 - col, item);
+            setItem(this.rows - row - 1, 8 - col, item);
         }
 
         return this;
@@ -377,7 +378,7 @@ public class Gui {
 
     @NotNull
     public Gui highlightItem(int cell) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, ItemUtils.addGlow(item));
@@ -388,14 +389,14 @@ public class Gui {
 
     @NotNull
     public Gui highlightItem(int row, int col) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
 
         return highlightItem(cell);
     }
 
     @NotNull
     public Gui removeHighlight(int cell) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, ItemUtils.removeGlow(item));
@@ -406,18 +407,18 @@ public class Gui {
 
     @NotNull
     public Gui removeHighlight(int row, int col) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
         return removeHighlight(cell);
     }
 
     @NotNull
     public Gui updateItemLore(int row, int col, @NotNull String... lore) {
-        return updateItemLore(col + row * inventoryType.columns, lore);
+        return updateItemLore(col + row * this.inventoryType.columns, lore);
     }
 
     @NotNull
     public Gui updateItemLore(int cell, @NotNull String... lore) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, GuiUtils.updateItemLore(item, lore));
@@ -428,12 +429,12 @@ public class Gui {
 
     @NotNull
     public Gui updateItemLore(int row, int col, @Nullable List<String> lore) {
-        return updateItemLore(col + row * inventoryType.columns, lore);
+        return updateItemLore(col + row * this.inventoryType.columns, lore);
     }
 
     @NotNull
     public Gui updateItemLore(int cell, @Nullable List<String> lore) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, GuiUtils.updateItemLore(item, lore));
@@ -444,12 +445,12 @@ public class Gui {
 
     @NotNull
     public Gui updateItemName(int row, int col, @Nullable String name) {
-        return updateItemName(col + row * inventoryType.columns, name);
+        return updateItemName(col + row * this.inventoryType.columns, name);
     }
 
     @NotNull
     public Gui updateItemName(int cell, @Nullable String name) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, GuiUtils.updateItemName(item, name));
@@ -460,7 +461,7 @@ public class Gui {
 
     @NotNull
     public Gui updateItem(int row, int col, @Nullable String name, @NotNull String... lore) {
-        return updateItem(col + row * inventoryType.columns, name, lore);
+        return updateItem(col + row * this.inventoryType.columns, name, lore);
     }
 
     @NotNull
@@ -470,12 +471,12 @@ public class Gui {
 
     @NotNull
     public Gui updateItem(int row, int col, @Nullable String name, @Nullable List<String> lore) {
-        return updateItem(col + row * inventoryType.columns, name, lore);
+        return updateItem(col + row * this.inventoryType.columns, name, lore);
     }
 
     @NotNull
     public Gui updateItem(int cell, @NotNull String name, @Nullable List<String> lore) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, GuiUtils.updateItem(item, name, lore));
@@ -486,12 +487,12 @@ public class Gui {
 
     @NotNull
     public Gui updateItem(int row, int col, @NotNull ItemStack itemTo, @Nullable String title, @NotNull String... lore) {
-        return updateItem(col + row * inventoryType.columns, itemTo, title, lore);
+        return updateItem(col + row * this.inventoryType.columns, itemTo, title, lore);
     }
 
     @NotNull
     public Gui updateItem(int cell, @NotNull ItemStack itemTo, @Nullable String title, @NotNull String... lore) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, GuiUtils.updateItem(item, itemTo, title, lore));
@@ -501,13 +502,13 @@ public class Gui {
     }
 
     @NotNull
-    public Gui updateItem(int row, int col, @NotNull CompatibleMaterial itemTo, @Nullable String title, @NotNull String... lore) {
+    public Gui updateItem(int row, int col, @NotNull XMaterial itemTo, @Nullable String title, @NotNull String... lore) {
-        return updateItem(col + row * inventoryType.columns, itemTo, title, lore);
+        return updateItem(col + row * this.inventoryType.columns, itemTo, title, lore);
     }
 
     @NotNull
-    public Gui updateItem(int cell, @NotNull CompatibleMaterial itemTo, @Nullable String title, @Nullable String... lore) {
+    public Gui updateItem(int cell, @NotNull XMaterial itemTo, @Nullable String title, @Nullable String... lore) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, GuiUtils.updateItem(item, itemTo, title, lore));
@@ -518,12 +519,12 @@ public class Gui {
 
     @NotNull
     public Gui updateItem(int row, int col, @NotNull ItemStack itemTo, @Nullable String title, @Nullable List<String> lore) {
-        return updateItem(col + row * inventoryType.columns, itemTo, title, lore);
+        return updateItem(col + row * this.inventoryType.columns, itemTo, title, lore);
     }
 
     @NotNull
     public Gui updateItem(int cell, @NotNull ItemStack itemTo, @Nullable String title, @Nullable List<String> lore) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, GuiUtils.updateItem(item, itemTo, title, lore));
@@ -533,13 +534,13 @@ public class Gui {
     }
 
     @NotNull
-    public Gui updateItem(int row, int col, @NotNull CompatibleMaterial itemTo, @Nullable String title, @Nullable List<String> lore) {
+    public Gui updateItem(int row, int col, @NotNull XMaterial itemTo, @Nullable String title, @Nullable List<String> lore) {
-        return updateItem(col + row * inventoryType.columns, itemTo, title, lore);
+        return updateItem(col + row * this.inventoryType.columns, itemTo, title, lore);
     }
 
     @NotNull
-    public Gui updateItem(int cell, @NotNull CompatibleMaterial itemTo, @Nullable String title, @Nullable List<String> lore) {
+    public Gui updateItem(int cell, @NotNull XMaterial itemTo, @Nullable String title, @Nullable List<String> lore) {
-        ItemStack item = cellItems.get(cell);
+        ItemStack item = this.cellItems.get(cell);
 
         if (item != null && item.getType() != Material.AIR) {
             setItem(cell, GuiUtils.updateItem(item, itemTo, title, lore));
@@ -556,7 +557,7 @@ public class Gui {
 
     @NotNull
     public Gui setAction(int row, int col, @Nullable Clickable action) {
-        setConditional(col + row * inventoryType.columns, null, action);
+        setConditional(col + row * this.inventoryType.columns, null, action);
         return this;
     }
 
@@ -568,7 +569,7 @@ public class Gui {
 
     @NotNull
     public Gui setAction(int row, int col, @Nullable ClickType type, @Nullable Clickable action) {
-        setConditional(col + row * inventoryType.columns, type, action);
+        setConditional(col + row * this.inventoryType.columns, type, action);
         return this;
     }
 
@@ -583,9 +584,9 @@ public class Gui {
 
     @NotNull
     public Gui setActionForRange(int cellRowFirst, int cellColFirst, int cellRowLast, int cellColLast, @Nullable Clickable action) {
-        final int last = cellColLast + cellRowLast * inventoryType.columns;
+        final int last = cellColLast + cellRowLast * this.inventoryType.columns;
 
-        for (int cell = cellColFirst + cellRowFirst * inventoryType.columns; cell <= last; ++cell) {
+        for (int cell = cellColFirst + cellRowFirst * this.inventoryType.columns; cell <= last; ++cell) {
             setConditional(cell, null, action);
         }
 
@@ -603,9 +604,9 @@ public class Gui {
 
     @NotNull
     public Gui setActionForRange(int cellRowFirst, int cellColFirst, int cellRowLast, int cellColLast, @Nullable ClickType type, @Nullable Clickable action) {
-        final int last = cellColLast + cellRowLast * inventoryType.columns;
+        final int last = cellColLast + cellRowLast * this.inventoryType.columns;
 
-        for (int cell = cellColFirst + cellRowFirst * inventoryType.columns; cell <= last; ++cell) {
+        for (int cell = cellColFirst + cellRowFirst * this.inventoryType.columns; cell <= last; ++cell) {
             setConditional(cell, type, action);
         }
 
@@ -614,13 +615,13 @@ public class Gui {
 
     @NotNull
     public Gui clearActions(int cell) {
-        conditionalButtons.remove(cell);
+        this.conditionalButtons.remove(cell);
         return this;
     }
 
     @NotNull
     public Gui clearActions(int row, int col) {
-        return clearActions(col + row * inventoryType.columns);
+        return clearActions(col + row * this.inventoryType.columns);
     }
 
     @NotNull
@@ -633,7 +634,7 @@ public class Gui {
 
     @NotNull
     public Gui setButton(int row, int col, @Nullable ItemStack item, @Nullable Clickable action) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
 
         setItem(cell, item);
         setConditional(cell, null, action);
@@ -651,7 +652,7 @@ public class Gui {
 
     @NotNull
     public Gui setButton(int row, int col, @Nullable ItemStack item, @Nullable ClickType type, @Nullable Clickable action) {
-        final int cell = col + row * inventoryType.columns;
+        final int cell = col + row * this.inventoryType.columns;
 
         setItem(cell, item);
         setConditional(cell, type, action);
@@ -660,62 +661,62 @@ public class Gui {
     }
 
     protected void setConditional(int cell, @Nullable ClickType type, @Nullable Clickable action) {
-        Map<ClickType, Clickable> conditionals = conditionalButtons.computeIfAbsent(cell, k -> new HashMap<>());
+        Map<ClickType, Clickable> conditionals = this.conditionalButtons.computeIfAbsent(cell, k -> new HashMap<>());
         conditionals.put(type, action);
     }
 
     @NotNull
     public Gui setOnOpen(@Nullable Openable action) {
-        opener = action;
+        this.opener = action;
         return this;
     }
 
     @NotNull
     public Gui setOnClose(@Nullable Closable action) {
-        closer = action;
+        this.closer = action;
         return this;
     }
 
     @NotNull
     public Gui setOnDrop(@Nullable Droppable action) {
-        dropper = action;
+        this.dropper = action;
         return this;
     }
 
     @NotNull
     public Gui setOnPage(@Nullable Pagable action) {
-        pager = action;
+        this.pager = action;
         return this;
     }
 
     public Gui setNextPage(ItemStack item) {
-        nextPage = item;
+        this.nextPage = item;
         return this;
     }
 
     public Gui setPrevPage(ItemStack item) {
-        prevPage = item;
+        this.prevPage = item;
         return this;
     }
 
     public void reset() {
-        if (inventory != null) {
+        if (this.inventory != null) {
-            inventory.clear();
+            this.inventory.clear();
         }
 
         setActionForRange(0, 53, null);
-        cellItems.clear();
+        this.cellItems.clear();
         update();
     }
 
     @NotNull
     public Gui setNextPage(int cell, @NotNull ItemStack item) {
-        nextPageItem = cellItems.get(cell);
+        this.nextPageItem = this.cellItems.get(cell);
-        nextPageIndex = cell;
+        this.nextPageIndex = cell;
-        nextPage = item;
+        this.nextPage = item;
 
-        if (page < pages) {
+        if (this.page < this.pages) {
-            setButton(nextPageIndex, nextPage, ClickType.LEFT, (event) -> this.nextPage());
+            setButton(this.nextPageIndex, this.nextPage, ClickType.LEFT, (event) -> this.nextPage());
         }
 
         return this;
@@ -723,17 +724,17 @@ public class Gui {
 
     @NotNull
     public Gui setNextPage(int row, int col, @NotNull ItemStack item) {
-        return setNextPage(col + row * inventoryType.columns, item);
+        return setNextPage(col + row * this.inventoryType.columns, item);
     }
 
     @NotNull
     public Gui setPrevPage(int cell, @NotNull ItemStack item) {
-        prevPageItem = cellItems.get(cell);
+        this.prevPageItem = this.cellItems.get(cell);
-        prevPageIndex = cell;
+        this.prevPageIndex = cell;
-        prevPage = item;
+        this.prevPage = item;
 
-        if (page > 1) {
+        if (this.page > 1) {
-            setButton(prevPageIndex, prevPage, ClickType.LEFT, (event) -> this.prevPage());
+            setButton(this.prevPageIndex, this.prevPage, ClickType.LEFT, (event) -> this.prevPage());
         }
 
         return this;
@@ -741,23 +742,23 @@ public class Gui {
 
     @NotNull
     public Gui setPrevPage(int row, int col, @NotNull ItemStack item) {
-        return setPrevPage(col + row * inventoryType.columns, item);
+        return setPrevPage(col + row * this.inventoryType.columns, item);
     }
 
     public void setPages(int pages) {
         this.pages = Math.max(1, pages);
 
-        if (page > pages) {
+        if (this.page > pages) {
             setPage(pages);
         }
     }
 
     public void setPage(int page) {
         int lastPage = this.page;
-        this.page = Math.max(1, Math.min(pages, page));
+        this.page = Math.max(1, Math.min(this.pages, page));
 
-        if (pager != null && this.page != lastPage) {
+        if (this.pager != null && this.page != lastPage) {
-            pager.onPageChange(new GuiPageEvent(this, guiManager, lastPage, page));
+            this.pager.onPageChange(new GuiPageEvent(this, this.guiManager, lastPage, page));
 
             // page markers
             updatePageNavigation();
@@ -765,11 +766,11 @@ public class Gui {
     }
 
     public void changePage(int direction) {
-        int lastPage = page;
+        int lastPage = this.page;
-        this.page = Math.max(1, Math.min(pages, page + direction));
+        this.page = Math.max(1, Math.min(this.pages, this.page + direction));
 
-        if (pager != null && this.page != lastPage) {
+        if (this.pager != null && this.page != lastPage) {
-            pager.onPageChange(new GuiPageEvent(this, guiManager, lastPage, page));
+            this.pager.onPageChange(new GuiPageEvent(this, this.guiManager, lastPage, this.page));
 
             // page markers
             updatePageNavigation();
@@ -777,13 +778,13 @@ public class Gui {
     }
 
     public void nextPage() {
-        if (page < pages) {
+        if (this.page < this.pages) {
-            int lastPage = page;
+            int lastPage = this.page;
-            ++page;
+            ++this.page;
 
             // page switch events
-            if (pager != null) {
+            if (this.pager != null) {
-                pager.onPageChange(new GuiPageEvent(this, guiManager, lastPage, page));
+                this.pager.onPageChange(new GuiPageEvent(this, this.guiManager, lastPage, this.page));
 
                 // page markers
                 updatePageNavigation();
@@ -796,12 +797,12 @@ public class Gui {
     }
 
     public void prevPage() {
-        if (page > 1) {
+        if (this.page > 1) {
-            int lastPage = page;
+            int lastPage = this.page;
-            --page;
+            --this.page;
 
-            if (pager != null) {
+            if (this.pager != null) {
-                pager.onPageChange(new GuiPageEvent(this, guiManager, lastPage, page));
+                this.pager.onPageChange(new GuiPageEvent(this, this.guiManager, lastPage, this.page));
 
                 // page markers
                 updatePageNavigation();
@@ -814,75 +815,75 @@ public class Gui {
     }
 
     protected void updatePageNavigation() {
-        if (prevPage != null) {
+        if (this.prevPage != null) {
-            if (page > 1) {
+            if (this.page > 1) {
-                this.setButton(prevPageIndex, prevPage, ClickType.LEFT, (event) -> this.prevPage());
+                this.setButton(this.prevPageIndex, this.prevPage, ClickType.LEFT, (event) -> this.prevPage());
             } else {
-                this.setItem(prevPageIndex, prevPageItem);
+                this.setItem(this.prevPageIndex, this.prevPageItem);
-                this.clearActions(prevPageIndex);
+                this.clearActions(this.prevPageIndex);
             }
         }
 
-        if (nextPage != null) {
+        if (this.nextPage != null) {
-            if (pages > 1 && page != pages) {
+            if (this.pages > 1 && this.page != this.pages) {
-                this.setButton(nextPageIndex, nextPage, ClickType.LEFT, (event) -> this.nextPage());
+                this.setButton(this.nextPageIndex, this.nextPage, ClickType.LEFT, (event) -> this.nextPage());
             } else {
-                this.setItem(nextPageIndex, nextPageItem);
+                this.setItem(this.nextPageIndex, this.nextPageItem);
-                this.clearActions(nextPageIndex);
+                this.clearActions(this.nextPageIndex);
             }
         }
     }
 
     @NotNull
     protected Inventory getOrCreateInventory(@NotNull GuiManager manager) {
-        return inventory != null ? inventory : generateInventory(manager);
+        return this.inventory != null ? this.inventory : generateInventory(manager);
     }
 
     @NotNull
     protected Inventory generateInventory(@NotNull GuiManager manager) {
         this.guiManager = manager;
-        final int cells = rows * inventoryType.columns;
+        final int cells = this.rows * this.inventoryType.columns;
 
         createInventory();
 
         for (int i = 0; i < cells; ++i) {
-            final ItemStack item = cellItems.get(i);
+            final ItemStack item = this.cellItems.get(i);
-            inventory.setItem(i, item != null ? item : (unlockedCells.getOrDefault(i, false) ? AIR : blankItem));
+            this.inventory.setItem(i, item != null ? item : (this.unlockedCells.getOrDefault(i, false) ? AIR : this.blankItem));
         }
 
-        return inventory;
+        return this.inventory;
     }
 
     protected void createInventory() {
-        final InventoryType t = inventoryType == null ? InventoryType.CHEST : inventoryType.type;
+        final InventoryType t = this.inventoryType == null ? InventoryType.CHEST : this.inventoryType.type;
 
         switch (t) {
             case DISPENSER:
             case HOPPER:
-                inventory = new GuiHolder(guiManager, this).newInventory(t,
+                this.inventory = new GuiHolder(this.guiManager, this).newInventory(t,
-                        title == null ? "" : trimTitle(title));
+                        this.title == null ? "" : trimTitle(this.title));
                 break;
             default:
-                inventory = new GuiHolder(guiManager, this).newInventory(rows * 9,
+                this.inventory = new GuiHolder(this.guiManager, this).newInventory(this.rows * 9,
-                        title == null ? "" : trimTitle(title));
+                        this.title == null ? "" : trimTitle(this.title));
                 break;
         }
     }
 
     @Nullable
     public Gui getParent() {
-        return parent;
+        return this.parent;
     }
 
     public void update() {
-        if (inventory == null) {
+        if (this.inventory == null) {
             return;
         }
 
-        final int cells = rows * inventoryType.columns;
+        final int cells = this.rows * this.inventoryType.columns;
         for (int i = 0; i < cells; ++i) {
-            final ItemStack item = cellItems.get(i);
+            final ItemStack item = this.cellItems.get(i);
-            inventory.setItem(i, item != null ? item : (unlockedCells.getOrDefault(i, false) ? AIR : blankItem));
+            this.inventory.setItem(i, item != null ? item : (this.unlockedCells.getOrDefault(i, false) ? AIR : this.blankItem));
         }
     }
 
@@ -899,12 +900,12 @@ public class Gui {
     }
 
     protected boolean onClickOutside(@NotNull GuiManager manager, @NotNull Player player, @NotNull InventoryClickEvent event) {
-        return dropper == null || dropper.onDrop(new GuiDropItemEvent(manager, this, player, event));
+        return this.dropper == null || this.dropper.onDrop(new GuiDropItemEvent(manager, this, player, event));
     }
 
     protected boolean onClick(@NotNull GuiManager manager, @NotNull Player player, @NotNull Inventory inventory, @NotNull InventoryClickEvent event) {
         final int cell = event.getSlot();
-        Map<ClickType, Clickable> conditionals = conditionalButtons.get(cell);
+        Map<ClickType, Clickable> conditionals = this.conditionalButtons.get(cell);
 
         Clickable button;
         if (conditionals != null
@@ -912,14 +913,14 @@ public class Gui {
             button.onClick(new GuiClickEvent(manager, this, player, event, cell, true));
         } else {
             // no event for this button
-            if (defaultClicker != null) {
+            if (this.defaultClicker != null) {
                 // this is a default action, not a triggered action
-                defaultClicker.onClick(new GuiClickEvent(manager, this, player, event, cell, true));
+                this.defaultClicker.onClick(new GuiClickEvent(manager, this, player, event, cell, true));
             }
 
-            if (privateDefaultClicker != null) {
+            if (this.privateDefaultClicker != null) {
                 // this is a private default action, not a triggered action
-                privateDefaultClicker.onClick(new GuiClickEvent(manager, this, player, event, cell, true));
+                this.privateDefaultClicker.onClick(new GuiClickEvent(manager, this, player, event, cell, true));
             }
 
             return false;
@@ -934,36 +935,36 @@ public class Gui {
     }
 
     public void onOpen(@NotNull GuiManager manager, @NotNull Player player) {
-        open = true;
+        this.open = true;
-        guiManager = manager;
+        this.guiManager = manager;
 
-        if (opener != null) {
+        if (this.opener != null) {
-            opener.onOpen(new GuiOpenEvent(manager, this, player));
+            this.opener.onOpen(new GuiOpenEvent(manager, this, player));
         }
     }
 
     public void onClose(@NotNull GuiManager manager, @NotNull Player player) {
-        if (!allowClose) {
+        if (!this.allowClose) {
             manager.showGUI(player, this);
             return;
         }
 
-        boolean showParent = open && parent != null;
+        boolean showParent = this.open && this.parent != null;
 
-        if (closer != null) {
+        if (this.closer != null) {
-            closer.onClose(new GuiCloseEvent(manager, this, player));
+            this.closer.onClose(new GuiCloseEvent(manager, this, player));
         }
 
         if (showParent) {
-            manager.showGUI(player, parent);
+            manager.showGUI(player, this.parent);
         }
     }
 
-    public CompatibleSound getDefaultSound() {
+    public XSound getDefaultSound() {
-        return defaultSound;
+        return this.defaultSound;
     }
 
-    public void setDefaultSound(CompatibleSound sound) {
+    public void setDefaultSound(XSound sound) {
-        defaultSound = sound;
+        this.defaultSound = sound;
     }
 }

Core/src/main/java/com/craftaro/core/gui/GuiHolder.java

@@ -4,6 +4,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.event.inventory.InventoryType;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
 
 /**
  * Internal class for marking an inventory as a GUI inventory
@@ -18,12 +19,12 @@ class GuiHolder implements InventoryHolder {
     }
 
     @Override
-    public Inventory getInventory() {
+    public @NotNull Inventory getInventory() {
-        return gui.inventory;
+        return this.gui.inventory;
     }
 
     public Gui getGUI() {
-        return gui;
+        return this.gui;
     }
 
     public Inventory newInventory(int size, String title) {

Core/src/main/java/com/craftaro/core/gui/GuiManager.java

@@ -1,8 +1,8 @@
 package com.craftaro.core.gui;
 
 import com.craftaro.core.compatibility.ClientVersion;
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.ServerVersion;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
@@ -43,17 +43,17 @@ public class GuiManager {
     }
 
     public Plugin getPlugin() {
-        return plugin;
+        return this.plugin;
     }
 
     /**
      * Initialize the GUI handlers
      */
     public void init() {
-        Bukkit.getPluginManager().registerEvents(listener, plugin);
+        Bukkit.getPluginManager().registerEvents(this.listener, this.plugin);
 
-        initialized = true;
+        this.initialized = true;
-        shutdown = false;
+        this.shutdown = false;
     }
 
     /**
@@ -62,7 +62,7 @@ public class GuiManager {
      * @return true if the owning plugin has shutdown
      */
     public boolean isClosed() {
-        return shutdown;
+        return this.shutdown;
     }
 
     /**
@@ -72,20 +72,20 @@ public class GuiManager {
      * @param gui    GUI to use
      */
     public void showGUI(Player player, Gui gui) {
-        if (shutdown) {
+        if (this.shutdown) {
-            if (!plugin.isEnabled()) {
+            if (!this.plugin.isEnabled()) {
                 return;
             }
 
             // recover if reloaded without calling init manually
             init();
-        } else if (!initialized) {
+        } else if (!this.initialized) {
             init();
         }
 
         if (gui instanceof AnvilGui) {
             // bukkit throws a fit now if you try to set anvil stuff asynchronously
-            Gui openInv = openInventories.get(player);
+            Gui openInv = this.openInventories.get(player);
 
             if (openInv != null) {
                 openInv.open = false;
@@ -95,15 +95,15 @@ public class GuiManager {
             ((AnvilGui) gui).open();
             gui.onOpen(this, player);
 
-            synchronized (lock) {
+            synchronized (this.lock) {
-                openInventories.put(player, gui);
+                this.openInventories.put(player, gui);
             }
 
             return;
         }
 
-        Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
+        Bukkit.getScheduler().runTaskAsynchronously(this.plugin, () -> {
-            Gui openInv = openInventories.get(player);
+            Gui openInv = this.openInventories.get(player);
 
             if (openInv != null) {
                 openInv.open = false;
@@ -111,32 +111,32 @@ public class GuiManager {
 
             Inventory inv = gui.getOrCreateInventory(this);
 
-            Bukkit.getScheduler().runTask(plugin, () -> {
+            Bukkit.getScheduler().runTask(this.plugin, () -> {
                 player.openInventory(inv);
                 gui.onOpen(this, player);
 
-                synchronized (lock) {
+                synchronized (this.lock) {
-                    openInventories.put(player, gui);
+                    this.openInventories.put(player, gui);
                 }
             });
         });
     }
 
     public void showPopup(Player player, String message) {
-        showPopup(player, message, CompatibleMaterial.NETHER_STAR, BackgroundType.ADVENTURE);
+        showPopup(player, message, XMaterial.NETHER_STAR, BackgroundType.ADVENTURE);
     }
 
-    public void showPopup(Player player, String message, CompatibleMaterial icon) {
+    public void showPopup(Player player, String message, XMaterial icon) {
         showPopup(player, message, icon, BackgroundType.ADVENTURE);
     }
 
-    public void showPopup(Player player, String message, CompatibleMaterial icon, BackgroundType background) {
+    public void showPopup(Player player, String message, XMaterial icon, BackgroundType background) {
         if (ClientVersion.getClientVersion(player).isAtLeast(ServerVersion.V1_12)) {
-            PopupMessage popup = new PopupMessage(plugin, icon, message, background);
+            PopupMessage popup = new PopupMessage(this.plugin, icon, message, background);
             popup.add();
             popup.grant(player);
 
-            Bukkit.getScheduler().runTaskLaterAsynchronously(plugin, () -> {
+            Bukkit.getScheduler().runTaskLaterAsynchronously(this.plugin, () -> {
                 popup.revoke(player);
                 popup.remove();
             }, 70);
@@ -156,13 +156,13 @@ public class GuiManager {
      * Close all active GUIs
      */
     public void closeAll() {
-        synchronized (lock) {
+        synchronized (this.lock) {
-            openInventories.entrySet().stream()
+            this.openInventories.entrySet().stream()
                     .filter(e -> e.getKey().getOpenInventory().getTopInventory().getHolder() instanceof GuiHolder)
                     .collect(Collectors.toList()) // to prevent concurrency exceptions
                     .forEach(e -> e.getKey().closeInventory());
 
-            openInventories.clear();
+            this.openInventories.clear();
         }
     }
 
@@ -182,7 +182,7 @@ public class GuiManager {
             Inventory openInv = event.getInventory();
             Gui gui;
             if (openInv.getHolder() != null && openInv.getHolder() instanceof GuiHolder
-                    && ((GuiHolder) openInv.getHolder()).manager.uuid.equals(manager.uuid)) {
+                    && ((GuiHolder) openInv.getHolder()).manager.uuid.equals(this.manager.uuid)) {
                 gui = ((GuiHolder) openInv.getHolder()).getGUI();
 
                 if (event.getRawSlots().stream()
@@ -205,7 +205,7 @@ public class GuiManager {
 
             Gui gui;
             if (openInv.getHolder() != null && openInv.getHolder() instanceof GuiHolder &&
-                    ((GuiHolder) openInv.getHolder()).manager.uuid.equals(manager.uuid)) {
+                    ((GuiHolder) openInv.getHolder()).manager.uuid.equals(this.manager.uuid)) {
                 gui = ((GuiHolder) openInv.getHolder()).getGUI();
 
                 if (event.getClick() == ClickType.DOUBLE_CLICK) {
@@ -228,7 +228,7 @@ public class GuiManager {
                 }
 
                 if (event.getSlotType() == SlotType.OUTSIDE) {
-                    if (!gui.onClickOutside(manager, player, event)) {
+                    if (!gui.onClickOutside(this.manager, player, event)) {
                         event.setCancelled(true);
                     }
                 } // did we click the gui or in the user's inventory?
@@ -237,13 +237,13 @@ public class GuiManager {
                     event.setCancelled(gui.unlockedCells.entrySet().stream().noneMatch(e -> event.getSlot() == e.getKey() && e.getValue()));
 
                     // process button press
-                    if (gui.onClick(manager, player, openInv, event)) {
+                    if (gui.onClick(this.manager, player, openInv, event)) {
-                        player.playSound(player.getLocation(), gui.getDefaultSound().getSound(), 1F, 1F);
+                        gui.getDefaultSound().play(player);
                     }
                 } else {
                     // Player clicked in the bottom inventory while GUI is open
-                    if (gui.onClickPlayerInventory(manager, player, openInv, event)) {
+                    if (gui.onClickPlayerInventory(this.manager, player, openInv, event)) {
-                        player.playSound(player.getLocation(), gui.getDefaultSound().getSound(), 1F, 1F);
+                        gui.getDefaultSound().play(player);
                     } else if (!gui.acceptsItems || event.getAction() == InventoryAction.MOVE_TO_OTHER_INVENTORY) {
                         event.setCancelled(true);
 
@@ -260,7 +260,7 @@ public class GuiManager {
             Inventory openInv = event.getInventory();
 
             if (openInv.getHolder() != null && openInv.getHolder() instanceof GuiHolder &&
-                    ((GuiHolder) openInv.getHolder()).manager.uuid.equals(manager.uuid)) {
+                    ((GuiHolder) openInv.getHolder()).manager.uuid.equals(this.manager.uuid)) {
                 Gui gui = ((GuiHolder) openInv.getHolder()).getGUI();
 
                 if (gui instanceof AnvilGui) {
@@ -277,23 +277,23 @@ public class GuiManager {
                     player.setItemOnCursor(null);
                 }
 
-                if (manager.shutdown) {
+                if (this.manager.shutdown) {
-                    gui.onClose(manager, player);
+                    gui.onClose(this.manager, player);
                 } else {
-                    Bukkit.getScheduler().runTaskLater(manager.plugin, () -> gui.onClose(manager, player), 1);
+                    Bukkit.getScheduler().runTaskLater(this.manager.plugin, () -> gui.onClose(this.manager, player), 1);
                 }
 
-                manager.openInventories.remove(player);
+                this.manager.openInventories.remove(player);
             }
         }
 
         @EventHandler
         void onDisable(PluginDisableEvent event) {
-            if (event.getPlugin() == manager.plugin) {
+            if (event.getPlugin() == this.manager.plugin) {
                 // uh-oh! Abandon ship!!
-                manager.shutdown = true;
+                this.manager.shutdown = true;
-                manager.closeAll();
+                this.manager.closeAll();
-                manager.initialized = false;
+                this.manager.initialized = false;
             }
         }
     }

Core/src/main/java/com/craftaro/core/gui/GuiUtils.java

@@ -1,6 +1,7 @@
 package com.craftaro.core.gui;
 
 import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.ChatColor;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
@@ -12,7 +13,7 @@ import java.util.List;
 
 public class GuiUtils {
     public static ItemStack getBorderGlassItem() {
-        ItemStack glass = CompatibleMaterial.LIGHT_BLUE_STAINED_GLASS_PANE.getItem();
+        ItemStack glass = XMaterial.LIGHT_BLUE_STAINED_GLASS_PANE.parseItem();
         ItemMeta glassmeta = glass.getItemMeta();
 
         glassmeta.setDisplayName(ChatColor.BLACK.toString());
@@ -30,8 +31,8 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack getBorderItem(CompatibleMaterial mat) {
+    public static ItemStack getBorderItem(XMaterial mat) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         ItemMeta glassmeta = item.getItemMeta();
 
         glassmeta.setDisplayName(ChatColor.BLACK.toString());
@@ -98,8 +99,8 @@ public class GuiUtils {
         return newLore;
     }
 
-    public static ItemStack createButtonItem(CompatibleMaterial mat, String title, String... lore) {
+    public static ItemStack createButtonItem(XMaterial mat, String title, String... lore) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         ItemMeta meta = item.getItemMeta();
 
         if (meta != null) {
@@ -117,8 +118,8 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack createButtonItem(CompatibleMaterial mat, int amount, String title, String... lore) {
+    public static ItemStack createButtonItem(XMaterial mat, int amount, String title, String... lore) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         item.setAmount(amount);
 
         ItemMeta meta = item.getItemMeta();
@@ -157,8 +158,8 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack createButtonItem(CompatibleMaterial mat, String title, List<String> lore) {
+    public static ItemStack createButtonItem(XMaterial mat, String title, List<String> lore) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         ItemMeta meta = item.getItemMeta();
 
         if (meta != null) {
@@ -176,8 +177,8 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack createButtonItem(CompatibleMaterial mat, int amount, String title, List<String> lore) {
+    public static ItemStack createButtonItem(XMaterial mat, int amount, String title, List<String> lore) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         item.setAmount(amount);
 
         ItemMeta meta = item.getItemMeta();
@@ -216,8 +217,8 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack createButtonItem(CompatibleMaterial mat, String[] lore) {
+    public static ItemStack createButtonItem(XMaterial mat, String[] lore) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         ItemMeta meta = item.getItemMeta();
 
         if (meta != null) {
@@ -236,8 +237,8 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack createButtonItem(CompatibleMaterial mat, int amount, String[] lore) {
+    public static ItemStack createButtonItem(XMaterial mat, int amount, String[] lore) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         item.setAmount(amount);
 
         ItemMeta meta = item.getItemMeta();
@@ -278,8 +279,8 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack createButtonItem(CompatibleMaterial mat, List<String> lore) {
+    public static ItemStack createButtonItem(XMaterial mat, List<String> lore) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         ItemMeta meta = item.getItemMeta();
 
         if (meta != null) {
@@ -298,8 +299,8 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack createButtonItem(CompatibleMaterial mat, int amount, List<String> lore) {
+    public static ItemStack createButtonItem(XMaterial mat, int amount, List<String> lore) {
-        ItemStack item = mat.getItem();
+        ItemStack item = mat.parseItem();
         item.setAmount(amount);
         ItemMeta meta = item.getItemMeta();
 
@@ -400,9 +401,9 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack updateItem(ItemStack item, CompatibleMaterial matTo, String title, String... lore) {
+    public static ItemStack updateItem(ItemStack item, XMaterial matTo, String title, String... lore) {
-        if (!matTo.matches(item)) {
+        if (!matTo.isSimilar(item)) {
-            item = matTo.getItem();
+            item = matTo.parseItem();
         }
 
         ItemMeta meta = item.getItemMeta();
@@ -423,7 +424,7 @@ public class GuiUtils {
     }
 
     public static ItemStack updateItem(ItemStack item, ItemStack to, String title, String... lore) {
-        if (!CompatibleMaterial.getMaterial(item).matches(to)) {
+        if (!CompatibleMaterial.getMaterial(item.getType()).get().isSimilar(to)) {
             item = to.clone();
         }
 
@@ -462,9 +463,9 @@ public class GuiUtils {
         return item;
     }
 
-    public static ItemStack updateItem(ItemStack item, CompatibleMaterial matTo, String title, List<String> lore) {
+    public static ItemStack updateItem(ItemStack item, XMaterial matTo, String title, List<String> lore) {
-        if (!matTo.matches(item)) {
+        if (!matTo.isSimilar(item)) {
-            item = matTo.getItem();
+            item = matTo.parseItem();
         }
 
         ItemMeta meta = item.getItemMeta();
@@ -485,7 +486,7 @@ public class GuiUtils {
     }
 
     public static ItemStack updateItem(ItemStack item, ItemStack to, String title, List<String> lore) {
-        if (!CompatibleMaterial.getMaterial(item).matches(to)) {
+        if (!CompatibleMaterial.getMaterial(item.getType()).get().isSimilar(to)) {
             item = to.clone();
         }
 

Core/src/main/java/com/craftaro/core/gui/PopupMessage.java

@@ -1,11 +1,11 @@
 package com.craftaro.core.gui;
 
+import com.craftaro.core.compatibility.ServerVersion;
+import com.cryptomorin.xseries.XMaterial;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
-import com.craftaro.core.compatibility.CompatibleMaterial;
-import com.craftaro.core.compatibility.ServerVersion;
 import net.md_5.bungee.api.chat.TextComponent;
 import net.md_5.bungee.chat.ComponentSerializer;
 import org.bukkit.Bukkit;
@@ -30,19 +30,19 @@ class PopupMessage {
     final UUID id = UUID.randomUUID();
     private final NamespacedKey key;
     private final TextComponent title;
-    CompatibleMaterial icon;
+    XMaterial icon;
     TriggerType trigger = TriggerType.IMPOSSIBLE;
     FrameType frame = FrameType.GOAL; // TASK is the default
     BackgroundType background = BackgroundType.ADVENTURE;
 
-    PopupMessage(Plugin source, CompatibleMaterial icon, String title) {
+    PopupMessage(Plugin source, XMaterial icon, String title) {
-        this.key = new NamespacedKey(source, "popup/" + id);
+        this.key = new NamespacedKey(source, "popup/" + this.id);
         this.title = new TextComponent(title.length() < 74 ? title : (title.substring(0, 72) + "..."));
         this.icon = icon;
     }
 
-    PopupMessage(Plugin source, CompatibleMaterial icon, String title, BackgroundType background) {
+    PopupMessage(Plugin source, XMaterial icon, String title, BackgroundType background) {
-        this.key = new NamespacedKey(source, "popup/" + id);
+        this.key = new NamespacedKey(source, "popup/" + this.id);
         this.title = new TextComponent(title.length() < 74 ? title : (title.substring(0, 72) + "..."));
         this.icon = icon;
         this.background = background;
@@ -54,9 +54,9 @@ class PopupMessage {
 
         if (this.icon != null) {
             JsonObject displayIcon = new JsonObject();
-            displayIcon.addProperty("item", "minecraft:" + this.icon.getMaterial().name().toLowerCase());
+            displayIcon.addProperty("item", "minecraft:" + this.icon.parseMaterial().name().toLowerCase());
 
-            if (this.icon.usesData()) {
+            if (this.icon.getData() != 0) {
                 displayIcon.addProperty("data", this.icon.getData());
             }
 
@@ -64,7 +64,7 @@ class PopupMessage {
         }
 
         advDisplay.add("title", gson.fromJson(ComponentSerializer.toString(this.title), JsonElement.class));
-        advDisplay.addProperty("background", background.key);
+        advDisplay.addProperty("background", this.background.key);
         advDisplay.addProperty("description", "");
         advDisplay.addProperty("frame", this.frame.id);
         advDisplay.addProperty("announce_to_chat", false);
@@ -110,11 +110,11 @@ class PopupMessage {
     }
 
     protected void add() {
-        if (!registeredMessages.contains(id)) {
+        if (!registeredMessages.contains(this.id)) {
-            registeredMessages.add(id);
+            registeredMessages.add(this.id);
 
             try {
-                Bukkit.getUnsafe().loadAdvancement(key, getJSON());
+                Bukkit.getUnsafe().loadAdvancement(this.key, getJSON());
             } catch (IllegalArgumentException ex) {
                 Bukkit.getLogger().warning("Failed to create popup advancement!");
             }
@@ -122,14 +122,14 @@ class PopupMessage {
     }
 
     protected void remove() {
-        if (registeredMessages.contains(id)) {
+        if (registeredMessages.contains(this.id)) {
-            registeredMessages.remove(id);
+            registeredMessages.remove(this.id);
-            Bukkit.getUnsafe().removeAdvancement(key);
+            Bukkit.getUnsafe().removeAdvancement(this.key);
         }
     }
 
     public Advancement getAdvancement() {
-        return Bukkit.getAdvancement(key);
+        return Bukkit.getAdvancement(this.key);
     }
 
     public enum FrameType {
@@ -140,7 +140,7 @@ class PopupMessage {
         final String id;
 
         FrameType() {
-            id = name().toLowerCase();
+            this.id = name().toLowerCase();
         }
     }
 
@@ -192,7 +192,7 @@ class PopupMessage {
         }
 
         public String getKey() {
-            return key;
+            return this.key;
         }
     }
 }

Core/src/main/java/com/craftaro/core/gui/SimplePagedGui.java

@@ -2,7 +2,7 @@ package com.craftaro.core.gui;
 
 import com.craftaro.core.gui.events.GuiClickEvent;
 import com.craftaro.core.gui.methods.Clickable;
-import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.ClickType;
@@ -30,8 +30,8 @@ public class SimplePagedGui extends Gui {
     public SimplePagedGui(Gui parent) {
         super(parent);
 
-        nextPage = GuiUtils.createButtonItem(CompatibleMaterial.ARROW, "Next Page");
+        this.nextPage = GuiUtils.createButtonItem(XMaterial.ARROW, "Next Page");
-        prevPage = GuiUtils.createButtonItem(CompatibleMaterial.ARROW, "Previous Page");
+        this.prevPage = GuiUtils.createButtonItem(XMaterial.ARROW, "Previous Page");
     }
 
     public SimplePagedGui setUseHeader(boolean useHeader) {
@@ -40,7 +40,7 @@ public class SimplePagedGui extends Gui {
     }
 
     public ItemStack getHeaderBackItem() {
-        return headerBackItem;
+        return this.headerBackItem;
     }
 
     public SimplePagedGui setHeaderBackItem(ItemStack headerBackItem) {
@@ -49,7 +49,7 @@ public class SimplePagedGui extends Gui {
     }
 
     public ItemStack getFooterBackItem() {
-        return footerBackItem;
+        return this.footerBackItem;
     }
 
     public SimplePagedGui setFooterBackItem(ItemStack footerBackItem) {
@@ -65,11 +65,11 @@ public class SimplePagedGui extends Gui {
     @Override
     public SimplePagedGui setItem(int cell, ItemStack item) {
         // set the cell relative to the current page
-        int cellIndex = cell < 0 ? cell : (page == 1 || (useHeader && cell < 9) ? cell : (cell + (page - 1) * (rowsPerPage * 9)));
+        int cellIndex = cell < 0 ? cell : (this.page == 1 || (this.useHeader && cell < 9) ? cell : (cell + (this.page - 1) * (this.rowsPerPage * 9)));
 
-        cellItems.put(cellIndex, item);
+        this.cellItems.put(cellIndex, item);
-        if (open && cell >= 0 && cell < inventory.getSize()) {
+        if (this.open && cell >= 0 && cell < this.inventory.getSize()) {
-            inventory.setItem(cell, item);
+            this.inventory.setItem(cell, item);
         }
 
         return this;
@@ -77,27 +77,27 @@ public class SimplePagedGui extends Gui {
 
     @Override
     public void nextPage() {
-        if (page < pages) {
+        if (this.page < this.pages) {
-            ++page;
+            ++this.page;
             showPage();
         }
     }
 
     @Override
     public void prevPage() {
-        if (page > 1) {
+        if (this.page > 1) {
-            --page;
+            --this.page;
             showPage();
         }
     }
 
     public void showPage() {
-        int startCell = useHeader ? 9 : 0;
+        int startCell = this.useHeader ? 9 : 0;
-        int cellIndex = startCell + (page - 1) * (rowsPerPage * 9);
+        int cellIndex = startCell + (this.page - 1) * (this.rowsPerPage * 9);
 
-        for (int i = startCell; i < (rows - 1) * 9; ++i) {
+        for (int i = startCell; i < (this.rows - 1) * 9; ++i) {
-            final ItemStack item = cellItems.get(cellIndex++);
+            final ItemStack item = this.cellItems.get(cellIndex++);
-            inventory.setItem(i, item != null ? item : blankItem);
+            this.inventory.setItem(i, item != null ? item : this.blankItem);
         }
 
         // page markers
@@ -106,26 +106,26 @@ public class SimplePagedGui extends Gui {
 
     @Override
     protected void updatePageNavigation() {
-        if (page > 1) {
+        if (this.page > 1) {
-            inventory.setItem(inventory.getSize() - prevPageIndex, prevPage);
+            this.inventory.setItem(this.inventory.getSize() - this.prevPageIndex, this.prevPage);
 
-            this.setButton(-prevPageIndex, prevPage, ClickType.LEFT, (event) -> this.prevPage());
+            this.setButton(-this.prevPageIndex, this.prevPage, ClickType.LEFT, (event) -> this.prevPage());
         } else {
-            inventory.setItem(inventory.getSize() - prevPageIndex, footerBackItem != null ? footerBackItem : blankItem);
+            this.inventory.setItem(this.inventory.getSize() - this.prevPageIndex, this.footerBackItem != null ? this.footerBackItem : this.blankItem);
 
-            this.setItem(-prevPageIndex, null);
+            this.setItem(-this.prevPageIndex, null);
-            this.clearActions(-prevPageIndex);
+            this.clearActions(-this.prevPageIndex);
         }
 
-        if (pages > 1 && page != pages) {
+        if (this.pages > 1 && this.page != this.pages) {
-            inventory.setItem(inventory.getSize() - nextPageIndex, nextPage);
+            this.inventory.setItem(this.inventory.getSize() - this.nextPageIndex, this.nextPage);
 
-            this.setButton(-nextPageIndex, nextPage, ClickType.LEFT, (event) -> this.nextPage());
+            this.setButton(-this.nextPageIndex, this.nextPage, ClickType.LEFT, (event) -> this.nextPage());
         } else {
-            inventory.setItem(inventory.getSize() - nextPageIndex, footerBackItem != null ? footerBackItem : blankItem);
+            this.inventory.setItem(this.inventory.getSize() - this.nextPageIndex, this.footerBackItem != null ? this.footerBackItem : this.blankItem);
 
-            this.setItem(-nextPageIndex, null);
+            this.setItem(-this.nextPageIndex, null);
-            this.clearActions(-nextPageIndex);
+            this.clearActions(-this.nextPageIndex);
         }
     }
 
@@ -134,65 +134,65 @@ public class SimplePagedGui extends Gui {
         this.guiManager = manager;
 
         // calculate pages here
-        rowsPerPage = useHeader ? 4 : 5;
+        this.rowsPerPage = this.useHeader ? 4 : 5;
-        maxCellSlot = this.cellItems.keySet().stream().max(Integer::compare).orElse(0) + 1;
+        this.maxCellSlot = this.cellItems.keySet().stream().max(Integer::compare).orElse(0) + 1;
-        int maxRows = (int) Math.ceil(maxCellSlot / 9.);
+        int maxRows = (int) Math.ceil(this.maxCellSlot / 9.);
-        pages = (int) Math.max(1, Math.ceil(maxRows / (double) rowsPerPage));
+        this.pages = (int) Math.max(1, Math.ceil(maxRows / (double) this.rowsPerPage));
-        this.setRows(maxRows + (useHeader ? 1 : 0));
+        this.setRows(maxRows + (this.useHeader ? 1 : 0));
 
         // create inventory view
         createInventory();
 
         // populate and return the display inventory
-        setPage(Math.min(page, pages));
+        setPage(Math.min(this.page, this.pages));
         update();
 
-        return inventory;
+        return this.inventory;
     }
 
     @Override
     protected void createInventory() {
-        final int cells = rows * 9;
+        final int cells = this.rows * 9;
 
-        inventory = Bukkit.getServer().createInventory(new GuiHolder(guiManager, this), cells,
+        this.inventory = Bukkit.getServer().createInventory(new GuiHolder(this.guiManager, this), cells,
-                title == null ? "" : trimTitle(title));
+                this.title == null ? "" : trimTitle(this.title));
     }
 
     @Override
     public void update() {
-        if (inventory == null) {
+        if (this.inventory == null) {
             return;
         }
 
         // calculate pages here
-        rowsPerPage = useHeader ? 4 : 5;
+        this.rowsPerPage = this.useHeader ? 4 : 5;
-        maxCellSlot = (this.cellItems.isEmpty() ? 0 : this.cellItems.keySet().stream().max(Integer::compare).get()) + 1;
+        this.maxCellSlot = (this.cellItems.isEmpty() ? 0 : this.cellItems.keySet().stream().max(Integer::compare).get()) + 1;
-        int maxRows = Math.max((useHeader ? 1 : 0), (int) Math.ceil(maxCellSlot / 9.));
+        int maxRows = Math.max((this.useHeader ? 1 : 0), (int) Math.ceil(this.maxCellSlot / 9.));
-        pages = (int) Math.ceil(maxRows / rowsPerPage);
+        this.pages = (int) Math.ceil(maxRows / this.rowsPerPage);
 
         // create a new inventory if needed
         List<Player> toUpdate = null;
-        if (Math.min(54, (maxRows + (useHeader ? 1 : 0)) * 9) != inventory.getSize()) {
+        if (Math.min(54, (maxRows + (this.useHeader ? 1 : 0)) * 9) != this.inventory.getSize()) {
             toUpdate = getPlayers();
 
-            this.setRows(maxRows + (useHeader ? 1 : 0));
+            this.setRows(maxRows + (this.useHeader ? 1 : 0));
 
             createInventory();
         }
 
         // populate header
-        if (useHeader) {
+        if (this.useHeader) {
             for (int i = 0; i < 9; ++i) {
-                final ItemStack item = cellItems.get(i);
+                final ItemStack item = this.cellItems.get(i);
 
-                inventory.setItem(i, item != null ? item : (headerBackItem != null ? headerBackItem : blankItem));
+                this.inventory.setItem(i, item != null ? item : (this.headerBackItem != null ? this.headerBackItem : this.blankItem));
             }
         }
 
         // last row is dedicated to pagation
-        final int cells = rows * 9;
+        final int cells = this.rows * 9;
         for (int i = cells - 9; i < cells; ++i) {
-            inventory.setItem(i, footerBackItem != null ? footerBackItem : blankItem);
+            this.inventory.setItem(i, this.footerBackItem != null ? this.footerBackItem : this.blankItem);
         }
 
         // fill out the rest of the page
@@ -202,7 +202,7 @@ public class SimplePagedGui extends Gui {
         if (toUpdate != null) {
             // whoopsie!
             exit();
-            toUpdate.forEach(player -> guiManager.showGUI(player, this));
+            toUpdate.forEach(player -> this.guiManager.showGUI(player, this));
         }
     }
 
@@ -211,14 +211,14 @@ public class SimplePagedGui extends Gui {
         int cell = event.getSlot();
         Map<ClickType, Clickable> conditionals;
 
-        if (useHeader && cell < 9) {
+        if (this.useHeader && cell < 9) {
-            conditionals = conditionalButtons.get(cell);
+            conditionals = this.conditionalButtons.get(cell);
-        } else if (cell >= (rows - 1) * 9) {
+        } else if (cell >= (this.rows - 1) * 9) {
             // footer row
-            conditionals = conditionalButtons.get(cell - (rows * 9));
+            conditionals = this.conditionalButtons.get(cell - (this.rows * 9));
         } else {
-            int cellIndex = page == 1 ? cell : cell + (page - 1) * rowsPerPage * 9;
+            int cellIndex = this.page == 1 ? cell : cell + (this.page - 1) * this.rowsPerPage * 9;
-            conditionals = conditionalButtons.get(cellIndex);
+            conditionals = this.conditionalButtons.get(cellIndex);
         }
 
         Clickable button;

Core/src/main/java/com/craftaro/core/hooks/holograms/DecentHologramsHolograms.java

@@ -47,7 +47,7 @@ public class DecentHologramsHolograms extends Holograms {
             DecentHologramsAPI.get().getHologramManager().removeHologram(id);
         }
 
-        ourHolograms.remove(id);
+        this.ourHolograms.remove(id);
     }
 
     @Override
@@ -68,7 +68,7 @@ public class DecentHologramsHolograms extends Holograms {
 
     @Override
     public void removeAllHolograms() {
-        for (String id : ourHolograms) {
+        for (String id : this.ourHolograms) {
             Hologram hologram = DHAPI.getHologram(id);
 
             if (hologram != null) {
@@ -77,7 +77,7 @@ public class DecentHologramsHolograms extends Holograms {
             }
         }
 
-        ourHolograms.clear();
+        this.ourHolograms.clear();
     }
 
     @Override
@@ -93,6 +93,6 @@ public class DecentHologramsHolograms extends Holograms {
         }
 
         DHAPI.createHologram(id, location, lines);
-        ourHolograms.add(id);
+        this.ourHolograms.add(id);
     }
 }

Core/src/main/java/com/craftaro/core/hooks/holograms/HologramsHolograms.java

@@ -20,7 +20,7 @@ public class HologramsHolograms extends Holograms {
     public HologramsHolograms(Plugin plugin) {
         super(plugin);
 
-        hologramPlugin = (HologramPlugin) Bukkit.getPluginManager().getPlugin("Holograms");
+        this.hologramPlugin = (HologramPlugin) Bukkit.getPluginManager().getPlugin("Holograms");
     }
 
     @Override
@@ -30,7 +30,7 @@ public class HologramsHolograms extends Holograms {
 
     @Override
     public boolean isEnabled() {
-        return hologramPlugin.isEnabled();
+        return this.hologramPlugin.isEnabled();
     }
 
     @Override
@@ -45,38 +45,38 @@ public class HologramsHolograms extends Holograms {
 
     @Override
     public void removeHologram(String id) {
-        Hologram hologram = hologramPlugin.getHologramManager().getHologram(id);
+        Hologram hologram = this.hologramPlugin.getHologramManager().getHologram(id);
 
         if (hologram != null) {
             hologram.despawn();
-            hologramPlugin.getHologramManager().removeActiveHologram(hologram);
+            this.hologramPlugin.getHologramManager().removeActiveHologram(hologram);
         }
 
-        ourHolograms.remove(id);
+        this.ourHolograms.remove(id);
     }
 
     @Override
     public void removeAllHolograms() {
-        for (String id : ourHolograms) {
+        for (String id : this.ourHolograms) {
-            Hologram hologram = hologramPlugin.getHologramManager().getHologram(id);
+            Hologram hologram = this.hologramPlugin.getHologramManager().getHologram(id);
 
             if (hologram != null) {
                 hologram.despawn();
-                hologramPlugin.getHologramManager().removeActiveHologram(hologram);
+                this.hologramPlugin.getHologramManager().removeActiveHologram(hologram);
             }
         }
 
-        ourHolograms.clear();
+        this.ourHolograms.clear();
     }
 
     @Override
     public boolean isHologramLoaded(String id) {
-        return hologramPlugin.getHologramManager().getHologram(id) != null;
+        return this.hologramPlugin.getHologramManager().getHologram(id) != null;
     }
 
     @Override
     public void updateHologram(String id, List<String> lines) {
-        Hologram hologram = hologramPlugin.getHologramManager().getHologram(id);
+        Hologram hologram = this.hologramPlugin.getHologramManager().getHologram(id);
 
         if (hologram != null) {
             hologram.spawn();
@@ -118,8 +118,8 @@ public class HologramsHolograms extends Holograms {
             hologram.addLine(new TextLine(hologram, line));
         }
 
-        hologramPlugin.getHologramManager().addActiveHologram(hologram);
+        this.hologramPlugin.getHologramManager().addActiveHologram(hologram);
 
-        ourHolograms.add(id);
+        this.ourHolograms.add(id);
     }
 }

Core/src/main/java/com/craftaro/core/hooks/holograms/HolographicDisplaysHolograms.java

@@ -45,7 +45,7 @@ public class HolographicDisplaysHolograms extends Holograms {
 
     @Override
     public void removeHologram(String id) {
-        Hologram hologram = holograms.remove(id);
+        Hologram hologram = this.holograms.remove(id);
         if (hologram != null) {
             hologram.delete();
         }
@@ -62,7 +62,7 @@ public class HolographicDisplaysHolograms extends Holograms {
             String id = entry.getKey();
             List<String> lines = entry.getValue();
 
-            Hologram hologram = holograms.get(id);
+            Hologram hologram = this.holograms.get(id);
 
             // only update if there is a change to the text
             boolean isChanged = lines.size() != hologram.size();
@@ -70,7 +70,7 @@ public class HolographicDisplaysHolograms extends Holograms {
             if (!isChanged) {
                 // double-check the lines
                 for (int i = 0; !isChanged && i < lines.size(); ++i) {
-                    isChanged = !hologram.getLine(i).toString().equals(String.format(textLineFormat, lines.get(i)));
+                    isChanged = !hologram.getLine(i).toString().equals(String.format(this.textLineFormat, lines.get(i)));
                 }
             }
 
@@ -85,27 +85,27 @@ public class HolographicDisplaysHolograms extends Holograms {
     }
 
     private void createAt(String id, Location location, List<String> lines) {
-        if (holograms.containsKey(id)) {
+        if (this.holograms.containsKey(id)) {
             return;
         }
 
         location = fixLocation(location);
-        Hologram hologram = HologramsAPI.createHologram(plugin, location);
+        Hologram hologram = HologramsAPI.createHologram(this.plugin, location);
 
         for (String line : lines) {
             hologram.appendTextLine(line);
         }
 
-        holograms.put(id, hologram);
+        this.holograms.put(id, hologram);
     }
 
     @Override
     public void removeAllHolograms() {
-        holograms.values().forEach(Hologram::delete);
+        this.holograms.values().forEach(Hologram::delete);
     }
 
     @Override
     public boolean isHologramLoaded(String id) {
-        return holograms.get(id) != null;
+        return this.holograms.get(id) != null;
     }
 }

Core/src/main/java/com/craftaro/core/http/SimpleHttpClient.java

@@ -1,6 +1,6 @@
 package com.craftaro.core.http;
 
-import com.craftaro.core.SongodaCoreConstants;
+import com.craftaro.core.CraftaroCoreConstants;
 import org.jetbrains.annotations.NotNull;
 
 import java.io.IOException;
@@ -36,9 +36,9 @@ public class SimpleHttpClient implements HttpClient {
     }
 
     private static String generateUserAgent() {
-        String projectName = SongodaCoreConstants.getProjectName();
+        String projectName = CraftaroCoreConstants.getProjectName();
-        String version = SongodaCoreConstants.getCoreVersion();
+        String version = CraftaroCoreConstants.getCoreVersion();
-        String projectUrl = SongodaCoreConstants.getGitHubProjectUrl();
+        String projectUrl = CraftaroCoreConstants.getGitHubProjectUrl();
 
         return projectName + "/" + version + " (+" + projectUrl + ")";
     }

Core/src/main/java/com/craftaro/core/lootables/gui/AbstractGuiListEditor.java

@@ -1,11 +1,11 @@
 package com.craftaro.core.lootables.gui;
 
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.gui.AnvilGui;
 import com.craftaro.core.gui.Gui;
 import com.craftaro.core.gui.GuiUtils;
 import com.craftaro.core.lootables.loot.Loot;
 import com.craftaro.core.utils.TextUtils;
+import com.cryptomorin.xseries.XMaterial;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -28,19 +28,19 @@ public abstract class AbstractGuiListEditor extends Gui {
     public void paint() {
         List<String> lore = getData() == null ? new ArrayList<>() : getData();
 
-        setButton(2, GuiUtils.createButtonItem(CompatibleMaterial.OAK_FENCE_GATE,
+        setButton(2, GuiUtils.createButtonItem(XMaterial.OAK_FENCE_GATE,
                         TextUtils.formatText("&cBack")),
                 (event) -> {
                     guiManager.showGUI(event.player, returnGui);
                     ((GuiLootEditor) returnGui).paint();
                 });
-        setButton(6, GuiUtils.createButtonItem(CompatibleMaterial.OAK_FENCE_GATE,
+        setButton(6, GuiUtils.createButtonItem(XMaterial.OAK_FENCE_GATE,
                         TextUtils.formatText("&cBack")),
                 (event) -> {
                     guiManager.showGUI(event.player, returnGui);
                     ((GuiLootEditor) returnGui).paint();
                 });
-        setButton(3, GuiUtils.createButtonItem(CompatibleMaterial.ARROW,
+        setButton(3, GuiUtils.createButtonItem(XMaterial.ARROW,
                         TextUtils.formatText("&aAdd new line")),
                 (event -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -57,13 +57,13 @@ public abstract class AbstractGuiListEditor extends Gui {
                     guiManager.showGUI(event.player, gui);
                 }));
 
-        setItem(4, GuiUtils.createButtonItem(CompatibleMaterial.WRITABLE_BOOK,
+        setItem(4, GuiUtils.createButtonItem(XMaterial.WRITABLE_BOOK,
                 TextUtils.formatText("&9Lore:"),
                 lore.isEmpty()
                         ? TextUtils.formatText(Collections.singletonList("&cNo lore set..."))
                         : TextUtils.formatText(lore)));
 
-        setButton(5, GuiUtils.createButtonItem(CompatibleMaterial.ARROW,
+        setButton(5, GuiUtils.createButtonItem(XMaterial.ARROW,
                         TextUtils.formatText("&cRemove the last line")),
                 (event -> {
                     lore.remove(lore.size() - 1);

Core/src/main/java/com/craftaro/core/lootables/gui/GuiEditor.java

@@ -5,12 +5,14 @@ import com.craftaro.core.gui.Gui;
 import com.craftaro.core.gui.GuiUtils;
 import com.craftaro.core.lootables.loot.LootManager;
 import com.craftaro.core.lootables.loot.Lootable;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.entity.EntityType;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Optional;
 
 public class GuiEditor extends Gui {
     private final LootManager lootManager;
@@ -39,7 +41,7 @@ public class GuiEditor extends Gui {
         this.pages = (int) Math.max(1, Math.ceil(itemCount / 36));
 
         if (page != 1) {
-            setButton(5, 2, GuiUtils.createButtonItem(CompatibleMaterial.ARROW, "Back"),
+            setButton(5, 2, GuiUtils.createButtonItem(XMaterial.ARROW, "Back"),
                     (event) -> {
                         page--;
                         paint();
@@ -47,7 +49,7 @@ public class GuiEditor extends Gui {
         }
 
         if (page != pages) {
-            setButton(5, 6, GuiUtils.createButtonItem(CompatibleMaterial.ARROW, "Next"),
+            setButton(5, 6, GuiUtils.createButtonItem(XMaterial.ARROW, "Next"),
                     (event) -> {
                         page++;
                         paint();
@@ -76,15 +78,15 @@ public class GuiEditor extends Gui {
         EntityType type = EntityType.fromName(key);
 
         if (type != null) {
-            CompatibleMaterial material = CompatibleMaterial.getSpawnEgg(type);
+            Optional<XMaterial> material = CompatibleMaterial.getSpawnEgg(type);
 
-            if (material != null) {
+            if (material.isPresent()) {
-                stack = material.getItem();
+                stack = material.get().parseItem();
             }
         }
 
         if (stack == null) {
-            stack = CompatibleMaterial.GHAST_SPAWN_EGG.getItem();
+            stack = XMaterial.GHAST_SPAWN_EGG.parseItem();
         }
 
         ItemMeta meta = stack.getItemMeta();

Core/src/main/java/com/craftaro/core/lootables/gui/GuiEnchantEditor.java

@@ -1,11 +1,11 @@
 package com.craftaro.core.lootables.gui;
 
-import com.craftaro.core.lootables.loot.Loot;
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.gui.AnvilGui;
 import com.craftaro.core.gui.Gui;
 import com.craftaro.core.gui.GuiUtils;
+import com.craftaro.core.lootables.loot.Loot;
 import com.craftaro.core.utils.TextUtils;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.enchantments.Enchantment;
 
 import java.util.ArrayList;
@@ -33,19 +33,19 @@ public class GuiEnchantEditor extends Gui {
     public void paint() {
         Map<String, Integer> lore = loot.getEnchants() == null ? new HashMap<>() : new HashMap<>(loot.getEnchants());
 
-        setButton(2, GuiUtils.createButtonItem(CompatibleMaterial.OAK_FENCE_GATE,
+        setButton(2, GuiUtils.createButtonItem(XMaterial.OAK_FENCE_GATE,
                         TextUtils.formatText("&cBack")),
                 (event) -> {
                     guiManager.showGUI(event.player, returnGui);
                     ((GuiLootEditor) returnGui).paint();
                 });
-        setButton(6, GuiUtils.createButtonItem(CompatibleMaterial.OAK_FENCE_GATE,
+        setButton(6, GuiUtils.createButtonItem(XMaterial.OAK_FENCE_GATE,
                         TextUtils.formatText("&cBack")),
                 (event) -> {
                     guiManager.showGUI(event.player, returnGui);
                     ((GuiLootEditor) returnGui).paint();
                 });
-        setButton(3, GuiUtils.createButtonItem(CompatibleMaterial.ARROW,
+        setButton(3, GuiUtils.createButtonItem(XMaterial.ARROW,
                         TextUtils.formatText("&aAdd new line")),
                 (event -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -82,14 +82,14 @@ public class GuiEnchantEditor extends Gui {
             }
         }
 
-        setItem(4, GuiUtils.createButtonItem(CompatibleMaterial.WRITABLE_BOOK,
+        setItem(4, GuiUtils.createButtonItem(XMaterial.WRITABLE_BOOK,
                 TextUtils.formatText("&7Enchant Override:"),
                 lore.isEmpty()
                         ? TextUtils.formatText(Collections.singletonList("&cNo enchantments set..."))
                         : TextUtils.formatText(enchantments)));
 
         String lastFinal = last;
-        setButton(5, GuiUtils.createButtonItem(CompatibleMaterial.ARROW,
+        setButton(5, GuiUtils.createButtonItem(XMaterial.ARROW,
                         TextUtils.formatText("&cRemove the last line")),
                 (event -> {
                     lore.remove(lastFinal);

Core/src/main/java/com/craftaro/core/lootables/gui/GuiLootEditor.java

@@ -1,13 +1,14 @@
 package com.craftaro.core.lootables.gui;
 
-import com.craftaro.core.lootables.loot.Loot;
-import com.craftaro.core.lootables.loot.LootBuilder;
-import com.craftaro.core.lootables.loot.LootManager;
 import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.gui.AnvilGui;
 import com.craftaro.core.gui.Gui;
 import com.craftaro.core.gui.GuiUtils;
+import com.craftaro.core.lootables.loot.Loot;
+import com.craftaro.core.lootables.loot.LootBuilder;
+import com.craftaro.core.lootables.loot.LootManager;
 import com.craftaro.core.utils.TextUtils;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.entity.EntityType;
 import org.bukkit.event.inventory.ClickType;
 import org.bukkit.inventory.ItemStack;
@@ -46,10 +47,10 @@ public class GuiLootEditor extends Gui {
 
         setActionForRange(0, 0, 5, 9, null);
 
-        setButton(8, GuiUtils.createButtonItem(CompatibleMaterial.OAK_DOOR, TextUtils.formatText("&cBack")),
+        setButton(8, GuiUtils.createButtonItem(XMaterial.OAK_DOOR, TextUtils.formatText("&cBack")),
                 (event) -> guiManager.showGUI(event.player, returnGui));
 
-        setButton(9, GuiUtils.createButtonItem(loot.getMaterial() == null ? CompatibleMaterial.BARRIER : loot.getMaterial(),
+        setButton(9, GuiUtils.createButtonItem(loot.getMaterial() == null ? XMaterial.BARRIER : loot.getMaterial(),
                 TextUtils.formatText("&7Current Material: &6" + (loot.getMaterial() != null
                         ? loot.getMaterial().name() : "None")), TextUtils.formatText(
                         Arrays.asList("",
@@ -57,12 +58,12 @@ public class GuiLootEditor extends Gui {
                                 "&8the material in your hand.")
                 )), (event) -> {
             ItemStack stack = event.player.getInventory().getItemInMainHand();
-            loot.setMaterial(CompatibleMaterial.getMaterial(stack));
+            loot.setMaterial(CompatibleMaterial.getMaterial(stack.getType()).get());
 
             paint();
         });
 
-        setButton(10, GuiUtils.createButtonItem(CompatibleMaterial.PAPER,
+        setButton(10, GuiUtils.createButtonItem(XMaterial.PAPER,
                         TextUtils.formatText("&7Name Override: &6" + (loot.getName() == null ? "None set" : loot.getName()))),
                 (event) -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -74,10 +75,10 @@ public class GuiLootEditor extends Gui {
                     }));
 
                     guiManager.showGUI(event.player, gui);
-                    gui.setInput(GuiUtils.createButtonItem(CompatibleMaterial.PAPER, loot.getName()));
+                    gui.setInput(GuiUtils.createButtonItem(XMaterial.PAPER, loot.getName()));
                 });
 
-        setButton(11, GuiUtils.createButtonItem(CompatibleMaterial.WRITABLE_BOOK,
+        setButton(11, GuiUtils.createButtonItem(XMaterial.WRITABLE_BOOK,
                         TextUtils.formatText("&7Lore Override:"),
                         TextUtils.formatText(loot.getLore() == null ? Collections.singletonList("&6None set") : loot.getLore())),
                 (event) -> guiManager.showGUI(event.player, new GuiLoreEditor(loot, this)));
@@ -90,14 +91,14 @@ public class GuiLootEditor extends Gui {
             }
         }
 
-        setButton(12, GuiUtils.createButtonItem(CompatibleMaterial.ENCHANTED_BOOK,
+        setButton(12, GuiUtils.createButtonItem(XMaterial.ENCHANTED_BOOK,
                         TextUtils.formatText("&7Enchantments:"),
                         TextUtils.formatText(enchantments.isEmpty() ? Collections.singletonList("&6None set") : enchantments)),
                 (event) -> guiManager.showGUI(event.player, new GuiEnchantEditor(loot, this)));
 
         setButton(13, GuiUtils.createButtonItem(
                         loot.getBurnedMaterial() == null
-                                ? CompatibleMaterial.FIRE_CHARGE
+                                ? XMaterial.FIRE_CHARGE
                                 : loot.getBurnedMaterial(),
                         TextUtils.formatText("&7Current Burned Material: &6"
                                 + (loot.getBurnedMaterial() == null
@@ -109,12 +110,12 @@ public class GuiLootEditor extends Gui {
                         )),
                 (event) -> {
                     ItemStack stack = event.player.getInventory().getItemInMainHand();
-                    loot.setBurnedMaterial(CompatibleMaterial.getMaterial(stack));
+                    loot.setBurnedMaterial(CompatibleMaterial.getMaterial(stack.getType()).get());
 
                     paint();
                 });
 
-        setButton(14, GuiUtils.createButtonItem(CompatibleMaterial.CLOCK,
+        setButton(14, GuiUtils.createButtonItem(XMaterial.CLOCK,
                         TextUtils.formatText("&7Chance: &6" + loot.getChance()),
                         TextUtils.formatText(
                                 Arrays.asList("",
@@ -131,11 +132,11 @@ public class GuiLootEditor extends Gui {
                         e.player.closeInventory();
                     });
 
-                    gui.setInput(GuiUtils.createButtonItem(CompatibleMaterial.PAPER, String.valueOf(loot.getChance())));
+                    gui.setInput(GuiUtils.createButtonItem(XMaterial.PAPER, String.valueOf(loot.getChance())));
                     guiManager.showGUI(event.player, gui);
                 });
 
-        setButton(15, GuiUtils.createButtonItem(CompatibleMaterial.REDSTONE,
+        setButton(15, GuiUtils.createButtonItem(XMaterial.REDSTONE,
                         TextUtils.formatText("&7Min Drop Amount: &6" + loot.getMin())),
                 (event) -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -147,12 +148,12 @@ public class GuiLootEditor extends Gui {
                         e.player.closeInventory();
                     });
 
-                    gui.setInput(GuiUtils.createButtonItem(CompatibleMaterial.PAPER,
+                    gui.setInput(GuiUtils.createButtonItem(XMaterial.PAPER,
                             String.valueOf(loot.getMin())));
                     guiManager.showGUI(event.player, gui);
                 });
 
-        setButton(16, GuiUtils.createButtonItem(CompatibleMaterial.GLOWSTONE_DUST,
+        setButton(16, GuiUtils.createButtonItem(XMaterial.GLOWSTONE_DUST,
                         TextUtils.formatText("&7Max Drop Amount: &6" + loot.getMax())),
                 (event) -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -164,11 +165,11 @@ public class GuiLootEditor extends Gui {
                         e.player.closeInventory();
                     });
 
-                    gui.setInput(GuiUtils.createButtonItem(CompatibleMaterial.PAPER, String.valueOf(loot.getMax())));
+                    gui.setInput(GuiUtils.createButtonItem(XMaterial.PAPER, String.valueOf(loot.getMax())));
                     guiManager.showGUI(event.player, gui);
                 });
 
-        setButton(17, GuiUtils.createButtonItem(CompatibleMaterial.REDSTONE,
+        setButton(17, GuiUtils.createButtonItem(XMaterial.REDSTONE,
                         TextUtils.formatText("&7Min Item Damage: &6" + loot.getDamageMin())),
                 (event) -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -179,11 +180,11 @@ public class GuiLootEditor extends Gui {
                         e.player.closeInventory();
                     });
 
-                    gui.setInput(GuiUtils.createButtonItem(CompatibleMaterial.PAPER, String.valueOf(loot.getDamageMin())));
+                    gui.setInput(GuiUtils.createButtonItem(XMaterial.PAPER, String.valueOf(loot.getDamageMin())));
                     guiManager.showGUI(event.player, gui);
                 });
 
-        setButton(18, GuiUtils.createButtonItem(CompatibleMaterial.GLOWSTONE_DUST,
+        setButton(18, GuiUtils.createButtonItem(XMaterial.GLOWSTONE_DUST,
                         TextUtils.formatText("&7Max Item Damage: &6" + loot.getDamageMax())),
                 (event) -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -194,11 +195,11 @@ public class GuiLootEditor extends Gui {
                         e.player.closeInventory();
                     });
 
-                    gui.setInput(GuiUtils.createButtonItem(CompatibleMaterial.PAPER, String.valueOf(loot.getDamageMax())));
+                    gui.setInput(GuiUtils.createButtonItem(XMaterial.PAPER, String.valueOf(loot.getDamageMax())));
                     guiManager.showGUI(event.player, gui);
                 });
 
-        setButton(19, GuiUtils.createButtonItem(CompatibleMaterial.CHEST,
+        setButton(19, GuiUtils.createButtonItem(XMaterial.CHEST,
                         TextUtils.formatText("&7Allow Looting Enchantment?: &6" + loot.isAllowLootingEnchant())),
                 (event) -> {
                     loot.setAllowLootingEnchant(!loot.isAllowLootingEnchant());
@@ -207,7 +208,7 @@ public class GuiLootEditor extends Gui {
                     event.player.closeInventory();
                 });
 
-        setButton(20, GuiUtils.createButtonItem(CompatibleMaterial.REDSTONE,
+        setButton(20, GuiUtils.createButtonItem(XMaterial.REDSTONE,
                         TextUtils.formatText("&7Min Child Loot Min: &6" + loot.getChildDropCountMin())),
                 (event) -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -219,11 +220,11 @@ public class GuiLootEditor extends Gui {
                         e.player.closeInventory();
                     });
 
-                    gui.setInput(GuiUtils.createButtonItem(CompatibleMaterial.PAPER, String.valueOf(loot.getChildDropCountMin())));
+                    gui.setInput(GuiUtils.createButtonItem(XMaterial.PAPER, String.valueOf(loot.getChildDropCountMin())));
                     guiManager.showGUI(event.player, gui);
                 });
 
-        setButton(21, GuiUtils.createButtonItem(CompatibleMaterial.GLOWSTONE_DUST,
+        setButton(21, GuiUtils.createButtonItem(XMaterial.GLOWSTONE_DUST,
                         TextUtils.formatText("&7Min Child Loot Max: &6" + loot.getChildDropCountMax())),
                 (event) -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
@@ -235,7 +236,7 @@ public class GuiLootEditor extends Gui {
                         e.player.closeInventory();
                     });
 
-                    gui.setInput(GuiUtils.createButtonItem(CompatibleMaterial.PAPER, String.valueOf(loot.getChildDropCountMax())));
+                    gui.setInput(GuiUtils.createButtonItem(XMaterial.PAPER, String.valueOf(loot.getChildDropCountMax())));
                     guiManager.showGUI(event.player, gui);
                 });
 
@@ -247,19 +248,18 @@ public class GuiLootEditor extends Gui {
             }
         }
 
-        setButton(22, GuiUtils.createButtonItem(CompatibleMaterial.ENCHANTED_BOOK,
+        setButton(22, GuiUtils.createButtonItem(XMaterial.ENCHANTED_BOOK,
                         TextUtils.formatText("&7Only Drop For:"),
                         TextUtils.formatText(entities)),
                 (event) -> guiManager.showGUI(event.player, new GuiEntityEditor(loot, this)));
 
-        setButton(4, 0, GuiUtils.createButtonItem(CompatibleMaterial.LIME_DYE, TextUtils.formatText("&aCreate new Child Loot")),
+        setButton(4, 0, GuiUtils.createButtonItem(XMaterial.LIME_DYE, TextUtils.formatText("&aCreate new Child Loot")),
                 (event -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
 
                     gui.setAction((event1 -> {
                         try {
-                            loot.addChildLoots(new LootBuilder().setMaterial(CompatibleMaterial
+                            loot.addChildLoots(new LootBuilder().setMaterial(XMaterial.valueOf(gui.getInputText().trim())).build());
-                                    .valueOf(gui.getInputText().trim())).build());
                         } catch (IllegalArgumentException ignore) {
                             event.player.sendMessage("That is not a valid material.");
                         }
@@ -275,7 +275,7 @@ public class GuiLootEditor extends Gui {
         int i = 9 * 5;
         for (Loot loot : loot.getChildLoot()) {
             ItemStack item = loot.getMaterial() == null
-                    ? CompatibleMaterial.BARRIER.getItem()
+                    ? XMaterial.BARRIER.parseItem()
                     : GuiUtils.createButtonItem(loot.getMaterial(), null,
                     TextUtils.formatText("&6Left click &7to edit"),
                     TextUtils.formatText("&6Right click &7to destroy"));

Core/src/main/java/com/craftaro/core/lootables/gui/GuiLootableEditor.java

@@ -1,6 +1,5 @@
 package com.craftaro.core.lootables.gui;
 
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.gui.AnvilGui;
 import com.craftaro.core.gui.Gui;
 import com.craftaro.core.gui.GuiUtils;
@@ -9,6 +8,7 @@ import com.craftaro.core.lootables.loot.LootBuilder;
 import com.craftaro.core.lootables.loot.LootManager;
 import com.craftaro.core.lootables.loot.Lootable;
 import com.craftaro.core.utils.TextUtils;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.event.inventory.ClickType;
 import org.bukkit.inventory.ItemStack;
 
@@ -39,13 +39,12 @@ public class GuiLootableEditor extends Gui {
 
         setActionForRange(0, 0, 5, 9, null);
 
-        setButton(0, GuiUtils.createButtonItem(CompatibleMaterial.LIME_DYE, TextUtils.formatText("&aCreate new Loot")),
+        setButton(0, GuiUtils.createButtonItem(XMaterial.LIME_DYE, TextUtils.formatText("&aCreate new Loot")),
                 (event -> {
                     AnvilGui gui = new AnvilGui(event.player, this);
                     gui.setAction((event1 -> {
                         try {
-                            lootable.registerLoot(new LootBuilder().setMaterial(CompatibleMaterial
+                            lootable.registerLoot(new LootBuilder().setMaterial(XMaterial.valueOf(gui.getInputText().trim().toUpperCase())).build());
-                                    .valueOf(gui.getInputText().trim().toUpperCase())).build());
                         } catch (IllegalArgumentException ex) {
                             event.player.sendMessage("That is not a valid material.");
                         }
@@ -58,13 +57,13 @@ public class GuiLootableEditor extends Gui {
                     guiManager.showGUI(event.player, gui);
                 }));
 
-        setButton(8, GuiUtils.createButtonItem(CompatibleMaterial.OAK_DOOR, TextUtils.formatText("&cBack")),
+        setButton(8, GuiUtils.createButtonItem(XMaterial.OAK_DOOR, TextUtils.formatText("&cBack")),
                 (event -> guiManager.showGUI(event.player, returnGui)));
 
         int i = 9;
         for (Loot loot : lootable.getRegisteredLoot()) {
             ItemStack item = loot.getMaterial() == null
-                    ? CompatibleMaterial.BARRIER.getItem()
+                    ? XMaterial.BARRIER.parseItem()
                     : GuiUtils.createButtonItem(loot.getMaterial(), null,
                     TextUtils.formatText("&6Left click &7to edit"),
                     TextUtils.formatText("&6Right click &7to destroy"));

Core/src/main/java/com/craftaro/core/lootables/loot/Loot.java

@@ -1,9 +1,9 @@
 package com.craftaro.core.lootables.loot;
 
-import com.google.gson.annotations.SerializedName;
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.utils.ItemUtils;
 import com.craftaro.core.utils.TextUtils;
+import com.cryptomorin.xseries.XMaterial;
+import com.google.gson.annotations.SerializedName;
 import org.bukkit.Material;
 import org.bukkit.enchantments.Enchantment;
 import org.bukkit.entity.EntityType;
@@ -29,7 +29,7 @@ public class Loot {
 
     // Material used for this drop.
     @SerializedName("Type")
-    private CompatibleMaterial material;
+    private XMaterial material;
 
     // The override for the item name.
     @SerializedName("Name")
@@ -45,7 +45,7 @@ public class Loot {
 
     // Material used if entity died on fire.
     @SerializedName("Burned Type")
-    private CompatibleMaterial burnedMaterial = null;
+    private XMaterial burnedMaterial = null;
 
     // Chance that this drop will take place.
     @SerializedName("Chance")
@@ -96,11 +96,11 @@ public class Loot {
     // Should the entity be charged? (Only works on creepers)
     private boolean requireCharged = false;
 
-    public CompatibleMaterial getMaterial() {
+    public XMaterial getMaterial() {
         return material;
     }
 
-    public void setMaterial(CompatibleMaterial material) {
+    public void setMaterial(XMaterial material) {
         this.material = material;
     }
 
@@ -200,11 +200,11 @@ public class Loot {
         return enchants == null ? null : Collections.unmodifiableMap(enchants);
     }
 
-    public CompatibleMaterial getBurnedMaterial() {
+    public XMaterial getBurnedMaterial() {
         return burnedMaterial;
     }
 
-    public void setBurnedMaterial(CompatibleMaterial burnedMaterial) {
+    public void setBurnedMaterial(XMaterial burnedMaterial) {
         this.burnedMaterial = burnedMaterial;
     }
 

Core/src/main/java/com/craftaro/core/lootables/loot/LootBuilder.java

@@ -1,7 +1,7 @@
 package com.craftaro.core.lootables.loot;
 
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.lootables.loot.objects.EnchantChance;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.entity.EntityType;
 
 import java.util.Arrays;
@@ -15,7 +15,7 @@ public final class LootBuilder {
         this.loot = new Loot();
     }
 
-    public LootBuilder setMaterial(CompatibleMaterial material) {
+    public LootBuilder setMaterial(XMaterial material) {
         this.loot.setMaterial(material);
         return this;
     }
@@ -52,7 +52,7 @@ public final class LootBuilder {
         return this;
     }
 
-    public LootBuilder setBurnedMaterial(CompatibleMaterial material) {
+    public LootBuilder setBurnedMaterial(XMaterial material) {
         this.loot.setBurnedMaterial(material);
         return this;
     }

Core/src/main/java/com/craftaro/core/lootables/loot/LootManager.java

@@ -1,11 +1,11 @@
 package com.craftaro.core.lootables.loot;
 
+import com.craftaro.core.lootables.Lootables;
+import com.craftaro.core.lootables.Modify;
+import com.cryptomorin.xseries.XMaterial;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.stream.JsonReader;
-import com.craftaro.core.compatibility.CompatibleMaterial;
-import com.craftaro.core.lootables.Lootables;
-import com.craftaro.core.lootables.Modify;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.EntityType;
 import org.bukkit.inventory.ItemStack;
@@ -92,7 +92,7 @@ public class LootManager {
                 }
             }
 
-            CompatibleMaterial material = loot.getMaterial();
+            XMaterial material = loot.getMaterial();
             String command = loot.getCommand();
             int xp = loot.getXp();
 
@@ -107,9 +107,9 @@ public class LootManager {
 
             if (material != null) {
                 ItemStack item = loot.getBurnedMaterial() != null &&
-                        burning ? loot.getBurnedMaterial().getItem() : material.getItem();
+                        burning ? loot.getBurnedMaterial().parseItem() : material.parseItem();
                 item.setAmount(amount);
-                ItemMeta meta = item.getItemMeta() == null ? Bukkit.getItemFactory().getItemMeta(loot.getMaterial().getMaterial())
+                ItemMeta meta = item.getItemMeta() == null ? Bukkit.getItemFactory().getItemMeta(loot.getMaterial().parseMaterial())
                         : item.getItemMeta();
 
                 if (loot.getName() != null) {

Core/src/main/java/com/craftaro/core/math/Eval.java

@@ -11,15 +11,15 @@ public class Eval {
     }
 
     private void nextChar() {
-        ch = (++pos < toParse.length()) ? toParse.charAt(pos) : -1;
+        this.ch = (++this.pos < this.toParse.length()) ? this.toParse.charAt(this.pos) : -1;
     }
 
     private boolean eat(int charToEat) {
-        while (ch == ' ') {
+        while (this.ch == ' ') {
             nextChar();
         }
 
-        if (ch == charToEat) {
+        if (this.ch == charToEat) {
             nextChar();
             return true;
         }
@@ -31,8 +31,8 @@ public class Eval {
         nextChar();
 
         double x = parseExpression();
-        if (pos < toParse.length()) {
+        if (this.pos < this.toParse.length()) {
-            throw new RuntimeException(warningMessage + "Unexpected: '" + (char) ch + "' at position " + pos + " in '" + this.toParse + "'");
+            throw new RuntimeException(this.warningMessage + "Unexpected: '" + (char) this.ch + "' at position " + this.pos + " in '" + this.toParse + "'");
         }
 
         return x;
@@ -85,18 +85,18 @@ public class Eval {
         if (eat('(')) { // parentheses
             x = parseExpression();
             eat(')');
-        } else if ((ch >= '0' && ch <= '9') || ch == '.') { // numbers
+        } else if ((this.ch >= '0' && this.ch <= '9') || this.ch == '.') { // numbers
-            while ((ch >= '0' && ch <= '9') || ch == '.') {
+            while ((this.ch >= '0' && this.ch <= '9') || this.ch == '.') {
                 nextChar();
             }
 
-            x = Double.parseDouble(toParse.substring(startPos, this.pos));
+            x = Double.parseDouble(this.toParse.substring(startPos, this.pos));
-        } else if (ch >= 'a' && ch <= 'z') { // functions
+        } else if (this.ch >= 'a' && this.ch <= 'z') { // functions
-            while (ch >= 'a' && ch <= 'z') {
+            while (this.ch >= 'a' && this.ch <= 'z') {
                 nextChar();
             }
 
-            String func = toParse.substring(startPos, this.pos);
+            String func = this.toParse.substring(startPos, this.pos);
             x = parseFactor();
 
             switch (func) {
@@ -113,10 +113,10 @@ public class Eval {
                     x = Math.tan(Math.toRadians(x));
                     break;
                 default:
-                    throw new RuntimeException(warningMessage + "Unknown function: " + func);
+                    throw new RuntimeException(this.warningMessage + "Unknown function: " + func);
             }
         } else {
-            throw new RuntimeException(warningMessage + "Unexpected: " + (char) ch);
+            throw new RuntimeException(this.warningMessage + "Unexpected: " + (char) this.ch);
         }
 
         if (eat('^')) {

Core/src/main/java/com/craftaro/core/math/MathUtils.java

@@ -1,6 +1,6 @@
 package com.craftaro.core.math;
 
-import com.craftaro.core.SongodaCoreConstants;
+import com.craftaro.core.CraftaroCoreConstants;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -9,7 +9,7 @@ public class MathUtils {
     private static final Map<String, Double> cache = new HashMap<>();
 
     public static double eval(String toParse) {
-        return eval(toParse, SongodaCoreConstants.getProjectName() + " Eval Engine");
+        return eval(toParse, CraftaroCoreConstants.getProjectName() + " Eval Engine");
     }
 
     public static double eval(String toParse, String warningMessage) {

Core/src/main/java/com/craftaro/core/utils/BlockUtils.java

@@ -7,6 +7,8 @@ import com.craftaro.core.compatibility.ServerVersion;
 import com.craftaro.core.nms.Nms;
 import com.craftaro.core.nms.world.SWorld;
 import com.craftaro.core.nms.world.WorldCore;
+import com.cryptomorin.xseries.XBlock;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.Effect;
 import org.bukkit.Location;
 import org.bukkit.Material;
@@ -18,6 +20,7 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.EnumSet;
+import java.util.Optional;
 import java.util.Set;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -346,7 +349,7 @@ public class BlockUtils {
      * @param loc The Location of the container
      *
      * @deprecated Use {@link WorldCore#updateAdjacentComparators(Block)}
-     * via {@link Nms#getImplementations()} instead.
+     *         via {@link Nms#getImplementations()} instead.
      */
     @Deprecated
     public static void updateAdjacentComparators(Location loc) {
@@ -463,8 +466,8 @@ public class BlockUtils {
      *         via {@link Nms#getImplementations()} instead.
      */
     @Deprecated
-    public static void setBlockFast(World world, int x, int y, int z, CompatibleMaterial material, byte data) {
+    public static void setBlockFast(World world, int x, int y, int z, XMaterial material, byte data) {
-        setBlockFast(world, x, y, z, material.getBlockMaterial(), data);
+        setBlockFast(world, x, y, z, material.parseMaterial(), data);
     }
 
     /**
@@ -483,12 +486,12 @@ public class BlockUtils {
             return BlockUtilsModern._isCropFullyGrown(block);
         }
 
-        CompatibleMaterial mat = CompatibleMaterial.getBlockMaterial(block.getType());
+        Optional<XMaterial> mat = CompatibleMaterial.getMaterial(block.getType());
-        if (mat == null || !mat.isCrop()) {
+        if (!mat.isPresent() || !XBlock.isCrop(mat.get())) {
             return false;
         }
 
-        return block.getData() >= (mat == CompatibleMaterial.BEETROOTS || mat == CompatibleMaterial.NETHER_WART ? 3 : 7);
+        return block.getData() >= (mat.get() == XMaterial.BEETROOTS || mat.get() == XMaterial.NETHER_WART ? 3 : 7);
     }
 
     /**
@@ -507,13 +510,12 @@ public class BlockUtils {
             return BlockUtilsModern._getMaxGrowthStage(block);
         }
 
-        CompatibleMaterial mat = CompatibleMaterial.getBlockMaterial(block.getType());
+        Optional<XMaterial> mat = CompatibleMaterial.getMaterial(block.getType());
-        if (mat == null || !mat.isCrop()) {
+        if (!mat.isPresent() || !XBlock.isCrop(mat.get())) {
             return -1;
         }
 
-        return (mat == CompatibleMaterial.BEETROOTS
+        return (mat.get() == XMaterial.BEETROOTS || mat.get() == XMaterial.NETHER_WART ? 3 : 7);
-                || mat == CompatibleMaterial.NETHER_WART ? 3 : 7);
     }
 
     /**
@@ -532,12 +534,12 @@ public class BlockUtils {
             return BlockUtilsModern._getMaxGrowthStage(material);
         }
 
-        CompatibleMaterial mat = CompatibleMaterial.getBlockMaterial(material);
+        Optional<XMaterial> mat = CompatibleMaterial.getMaterial(material);
-        if (mat == null || !mat.isCrop()) {
+        if (!mat.isPresent() || XBlock.isCrop(mat.get())) {
             return -1;
         }
 
-        return (mat == CompatibleMaterial.BEETROOTS || mat == CompatibleMaterial.NETHER_WART ? 3 : 7);
+        return (mat.get() == XMaterial.BEETROOTS || mat.get() == XMaterial.NETHER_WART ? 3 : 7);
     }
 
     /**
@@ -551,11 +553,10 @@ public class BlockUtils {
         } else if (!useLegacy) {
             BlockUtilsModern._setGrowthStage(block, stage);
         } else {
-            CompatibleMaterial mat = CompatibleMaterial.getBlockMaterial(block.getType());
+            Optional<XMaterial> mat = CompatibleMaterial.getMaterial(block.getType());
-            if (mat != null && mat.isCrop()) {
+            if (mat.isPresent() && XBlock.isCrop(mat.get())) {
                 try {
-                    legacySetBlockData.invoke(block, (byte) Math.max(0, Math.min(stage, (mat == CompatibleMaterial.BEETROOTS
+                    legacySetBlockData.invoke(block, (byte) Math.max(0, Math.min(stage, (mat.get() == XMaterial.BEETROOTS || mat.get() == XMaterial.NETHER_WART ? 3 : 7))));
-                            || mat == CompatibleMaterial.NETHER_WART ? 3 : 7))));
                 } catch (Exception ex) {
                     Logger.getLogger(BlockUtils.class.getName()).log(Level.SEVERE, "Unexpected method error", ex);
                 }
@@ -573,10 +574,9 @@ public class BlockUtils {
         } else if (!useLegacy) {
             BlockUtilsModern._incrementGrowthStage(block);
         } else {
-            CompatibleMaterial mat = CompatibleMaterial.getBlockMaterial(block.getType());
+            Optional<XMaterial> mat = CompatibleMaterial.getMaterial(block.getType());
 
-            if (mat != null && mat.isCrop() &&
+            if (mat.isPresent() && XBlock.isCrop(mat.get()) && block.getData() < (mat.get() == XMaterial.BEETROOTS || mat.get() == XMaterial.NETHER_WART ? 3 : 7)) {
-                    block.getData() < (mat == CompatibleMaterial.BEETROOTS || mat == CompatibleMaterial.NETHER_WART ? 3 : 7)) {
                 try {
                     legacySetBlockData.invoke(block, (byte) (block.getData() + 1));
                 } catch (Exception ex) {
@@ -596,9 +596,9 @@ public class BlockUtils {
         } else if (!useLegacy) {
             BlockUtilsModern._resetGrowthStage(block);
         } else {
-            CompatibleMaterial mat = CompatibleMaterial.getBlockMaterial(block.getType());
+            Optional<XMaterial> mat = CompatibleMaterial.getMaterial(block.getType());
 
-            if (mat != null && mat.isCrop()) {
+            if (mat.isPresent() && XBlock.isCrop(mat.get())) {
                 try {
                     legacySetBlockData.invoke(block, (byte) 0);
                 } catch (Exception ex) {

Core/src/main/java/com/craftaro/core/utils/ColorUtils.java

@@ -7,7 +7,7 @@ import java.util.Map;
 import java.util.TreeMap;
 
 public class ColorUtils {
-    private static Map<ColorCode, ColorSet<Integer, Integer, Integer>> colorMap = new HashMap<>();
+    private static final Map<ColorCode, ColorSet<Integer, Integer, Integer>> colorMap = new HashMap<>();
 
     static {
         colorMap.put(ColorCode.BLACK, new ColorSet<>(0, 0, 0));
@@ -40,15 +40,15 @@ public class ColorUtils {
         }
 
         public R getRed() {
-            return red;
+            return this.red;
         }
 
         public G getGreen() {
-            return green;
+            return this.green;
         }
 
         public B getBlue() {
-            return blue;
+            return this.blue;
         }
     }
 

Core/src/main/java/com/craftaro/core/utils/EntityUtils.java

@@ -1,18 +1,22 @@
 package com.craftaro.core.utils;
 
 import com.craftaro.core.compatibility.ClassMapping;
-import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
+import org.bukkit.entity.Entity;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.LivingEntity;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
+/**
+ * @deprecated Use {@link com.craftaro.core.nms.entity.NmsEntity} instead
+ */
+@Deprecated
 public class EntityUtils {
     private static Class<?> clazzEntityInsentient, clazzEntity, clazzCraftEntity;
 
@@ -41,6 +45,10 @@ public class EntityUtils {
         }
     }
 
+    /**
+     * @deprecated Use {@link com.craftaro.core.nms.entity.NmsEntity#setMobAware(Entity, boolean)} instead
+     */
+    @Deprecated
     public static void setUnaware(LivingEntity entity) {
         try {
             setUnaware(methodGetHandle.invoke(clazzCraftEntity.cast(entity)));
@@ -49,6 +57,10 @@ public class EntityUtils {
         }
     }
 
+    /**
+     * @deprecated Use {@link com.craftaro.core.nms.entity.NmsEntity#setMobAware(Entity, boolean)} instead
+     */
+    @Deprecated
     public static void setUnaware(Object entity) {
         try {
             if (aware != null) {
@@ -61,6 +73,10 @@ public class EntityUtils {
         }
     }
 
+    /**
+     * @deprecated Use {@link com.craftaro.core.nms.entity.NmsEntity#isAware(Entity)} instead
+     */
+    @Deprecated
     public static boolean isAware(LivingEntity entity) {
         try {
             return isAware(methodGetHandle.invoke(clazzCraftEntity.cast(entity)));
@@ -71,6 +87,10 @@ public class EntityUtils {
         return false;
     }
 
+    /**
+     * @deprecated Use {@link com.craftaro.core.nms.entity.NmsEntity#isAware(Entity)} instead
+     */
+    @Deprecated
     public static boolean isAware(Object entity) {
         try {
             if (aware != null) {
@@ -85,7 +105,7 @@ public class EntityUtils {
         return false;
     }
 
-    public static List<CompatibleMaterial> getSpawnBlocks(EntityType type) {
+    public static List<XMaterial> getSpawnBlocks(EntityType type) {
         switch (type.name()) {
             case "PIG":
             case "SHEEP":
@@ -95,23 +115,27 @@ public class EntityUtils {
             case "LLAMA":
             case "HORSE":
             case "CAT":
-                return new ArrayList<>(Collections.singletonList(CompatibleMaterial.GRASS_BLOCK));
+                return Collections.singletonList(XMaterial.GRASS_BLOCK);
+
             case "MUSHROOM_COW":
-                return new ArrayList<>(Collections.singletonList(CompatibleMaterial.MYCELIUM));
+                return Collections.singletonList(XMaterial.MYCELIUM);
+
             case "SQUID":
             case "ELDER_GUARDIAN":
             case "COD":
             case "SALMON":
             case "PUFFERFISH":
             case "TROPICAL_FISH":
-                return new ArrayList<>(Collections.singletonList(CompatibleMaterial.WATER));
+                return Collections.singletonList(XMaterial.WATER);
+
             case "OCELOT":
-                return new ArrayList<>(Arrays.asList(CompatibleMaterial.GRASS_BLOCK,
+                return Arrays.asList(XMaterial.GRASS_BLOCK,
-                        CompatibleMaterial.JUNGLE_LEAVES, CompatibleMaterial.ACACIA_LEAVES,
+                        XMaterial.JUNGLE_LEAVES, XMaterial.ACACIA_LEAVES,
-                        CompatibleMaterial.BIRCH_LEAVES, CompatibleMaterial.DARK_OAK_LEAVES,
+                        XMaterial.BIRCH_LEAVES, XMaterial.DARK_OAK_LEAVES,
-                        CompatibleMaterial.OAK_LEAVES, CompatibleMaterial.SPRUCE_LEAVES));
+                        XMaterial.OAK_LEAVES, XMaterial.SPRUCE_LEAVES);
+
             default:
-                return new ArrayList<>(Collections.singletonList(CompatibleMaterial.AIR));
+                return Collections.singletonList(XMaterial.AIR);
         }
     }
 }

Core/src/main/java/com/craftaro/core/utils/ItemSerializer.java

@@ -13,7 +13,10 @@ import java.util.List;
 
 /**
  * Class based off of https://gist.github.com/graywolf336/8153678
+ *
+ * @deprecated Will be moved into a more appropriate package and refactored.
  */
+@Deprecated
 public class ItemSerializer {
     /**
      * A method to serialize an {@link ItemStack} list to Base64 String.

Core/src/main/java/com/craftaro/core/utils/ItemUtils.java

@@ -1,12 +1,13 @@
 package com.craftaro.core.utils;
 
-import com.mojang.authlib.GameProfile;
-import com.mojang.authlib.properties.Property;
 import com.craftaro.core.compatibility.ClassMapping;
 import com.craftaro.core.compatibility.CompatibleHand;
 import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.MethodMapping;
 import com.craftaro.core.compatibility.ServerVersion;
+import com.cryptomorin.xseries.XMaterial;
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.properties.Property;
 import org.apache.commons.lang3.StringUtils;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
@@ -33,6 +34,7 @@ import java.util.Arrays;
 import java.util.Base64;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Optional;
 import java.util.Random;
 import java.util.UUID;
 import java.util.concurrent.ThreadLocalRandom;
@@ -42,7 +44,10 @@ import java.util.stream.Stream;
 
 /**
  * This class uses some Minecraft code and also Paper API
+ *
+ * @deprecated Needs to be re-implemented without ClassMapping usage etc. and moved into a more appropriate package
  */
+@Deprecated
 public class ItemUtils {
     static boolean can_getI18NDisplayName = true;
 
@@ -329,7 +334,7 @@ public class ItemUtils {
     }
 
     public static ItemStack getPlayerSkull(OfflinePlayer player) {
-        ItemStack head = CompatibleMaterial.PLAYER_HEAD.getItem();
+        ItemStack head = XMaterial.PLAYER_HEAD.parseItem();
         if (ServerVersion.isServerVersionBelow(ServerVersion.V1_8)) {
             return head;
         }
@@ -348,7 +353,7 @@ public class ItemUtils {
     }
 
     public static void setHeadOwner(ItemStack head, OfflinePlayer player) {
-        if (ServerVersion.isServerVersionBelow(ServerVersion.V1_8) || !CompatibleMaterial.PLAYER_HEAD.matches(head)) {
+        if (ServerVersion.isServerVersionBelow(ServerVersion.V1_8) || !XMaterial.PLAYER_HEAD.isSimilar(head)) {
             return;
         }
 
@@ -366,7 +371,7 @@ public class ItemUtils {
     }
 
     public static ItemStack getCustomHead(String signature, String texture) {
-        ItemStack skullItem = CompatibleMaterial.PLAYER_HEAD.getItem();
+        ItemStack skullItem = XMaterial.PLAYER_HEAD.parseItem();
 
         if (ServerVersion.isServerVersionBelow(ServerVersion.V1_8)) {
             return skullItem;
@@ -430,7 +435,7 @@ public class ItemUtils {
     }
 
     public static String getSkullTexture(ItemStack item) {
-        if (!CompatibleMaterial.PLAYER_HEAD.matches(item) || ServerVersion.isServerVersionBelow(ServerVersion.V1_8)) {
+        if (!XMaterial.PLAYER_HEAD.isSimilar(item) || ServerVersion.isServerVersionBelow(ServerVersion.V1_8)) {
             return null;
         }
 
@@ -486,9 +491,9 @@ public class ItemUtils {
      * @return true if both items are of the same material
      */
     public static boolean isSimilarMaterial(ItemStack is1, ItemStack is2) {
-        CompatibleMaterial mat1 = CompatibleMaterial.getMaterial(is1);
+        Optional<XMaterial> mat1 = CompatibleMaterial.getMaterial(is1.getType());
 
-        return mat1 != null && mat1 == CompatibleMaterial.getMaterial(is2);
+        return mat1.isPresent() && mat1 == CompatibleMaterial.getMaterial(is2.getType());
     }
 
     /**
@@ -796,7 +801,7 @@ public class ItemUtils {
                 case "FURNACE": {
                     check = new boolean[3];
 
-                    boolean isFuel = !item.getType().name().contains("LOG") && CompatibleMaterial.getMaterial(item.getType()).isFuel();
+                    boolean isFuel = !item.getType().name().contains("LOG") && CompatibleMaterial.isFurnaceFuel(CompatibleMaterial.getMaterial(item.getType()).get());
 
                     // fuel is 2nd slot, input is first
                     if (isFuel) {
@@ -1005,7 +1010,7 @@ public class ItemUtils {
                 case "FURNACE": {
                     check = new boolean[3];
 
-                    boolean isFuel = !item.getType().name().contains("LOG") && CompatibleMaterial.getMaterial(item.getType()).isFuel();
+                    boolean isFuel = !item.getType().name().contains("LOG") && CompatibleMaterial.isFurnaceFuel(CompatibleMaterial.getMaterial(item.getType()).get());
                     // fuel is 2nd slot, input is first
                     if (isFuel) {
                         check[1] = true;
@@ -1080,41 +1085,41 @@ public class ItemUtils {
         return false;
     }
 
-    public static CompatibleMaterial getDyeColor(char color) {
+    public static XMaterial getDyeColor(char color) {
         switch (color) {
             case '0':
-                return CompatibleMaterial.BLACK_DYE;
+                return XMaterial.BLACK_DYE;
             case '1':
-                return CompatibleMaterial.BLUE_DYE;
+                return XMaterial.BLUE_DYE;
             case '2':
-                return CompatibleMaterial.GREEN_DYE;
+                return XMaterial.GREEN_DYE;
             case '3':
-                return CompatibleMaterial.CYAN_DYE;
+                return XMaterial.CYAN_DYE;
             case '4':
-                return CompatibleMaterial.BROWN_DYE;
+                return XMaterial.BROWN_DYE;
             case '5':
-                return CompatibleMaterial.PURPLE_DYE;
+                return XMaterial.PURPLE_DYE;
             case '6':
-                return CompatibleMaterial.ORANGE_DYE;
+                return XMaterial.ORANGE_DYE;
             case '7':
-                return CompatibleMaterial.LIGHT_GRAY_DYE;
+                return XMaterial.LIGHT_GRAY_DYE;
             case '8':
-                return CompatibleMaterial.GRAY_DYE;
+                return XMaterial.GRAY_DYE;
             case 'a':
-                return CompatibleMaterial.LIME_DYE;
+                return XMaterial.LIME_DYE;
             case 'b':
-                return CompatibleMaterial.LIGHT_BLUE_DYE;
+                return XMaterial.LIGHT_BLUE_DYE;
             case 'c':
-                return CompatibleMaterial.RED_DYE;
+                return XMaterial.RED_DYE;
             case 'd':
-                return CompatibleMaterial.MAGENTA_DYE;
+                return XMaterial.MAGENTA_DYE;
             case 'e':
-                return CompatibleMaterial.YELLOW_DYE;
+                return XMaterial.YELLOW_DYE;
             case 'f':
-                return CompatibleMaterial.WHITE_DYE;
+                return XMaterial.WHITE_DYE;
         }
 
-        return CompatibleMaterial.STONE;
+        return XMaterial.STONE;
     }
 
     /**

Core/src/main/java/com/craftaro/core/utils/Metrics.java

@@ -36,7 +36,10 @@ import java.util.zip.GZIPOutputStream;
  * bStats collects some data for plugin authors.
  * <p>
  * Check out https://bStats.org/ to learn more about bStats!
+ *
+ * @deprecated Replace with latest version of bStats
  */
+@Deprecated
 @SuppressWarnings({"WeakerAccess", "unused"})
 public class Metrics {
     static {

Core/src/main/java/com/craftaro/core/utils/NMSUtils.java

@@ -7,6 +7,10 @@ import org.bukkit.entity.Player;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 
+/**
+ * @deprecated Use {@link com.craftaro.core.nms.Nms} instead
+ */
+@Deprecated
 public class NMSUtils {
     /**
      * @deprecated Use {@link ClassMapping} instead

Core/src/main/java/com/craftaro/core/utils/NumberUtils.java

@@ -4,10 +4,19 @@ import java.text.DecimalFormat;
 import java.text.DecimalFormatSymbols;
 
 public class NumberUtils {
+    /**
+     * @deprecated This method does not take the plugin's configured locale into account.
+     *         Additionally, the currencySymbol's position is not configurable in this method.
+     */
+    @Deprecated
     public static String formatEconomy(char currencySymbol, double number) {
         return currencySymbol + formatNumber(number);
     }
 
+    /**
+     * @deprecated This method does not take the plugin's configured locale into account.
+     */
+    @Deprecated
     public static String formatNumber(double number) {
         DecimalFormat decimalFormatter = new DecimalFormat(number == Math.ceil(number) ? "#,###" : "#,###.00");
 
@@ -21,6 +30,10 @@ public class NumberUtils {
         return decimalFormatter.format(number);
     }
 
+    /**
+     * @deprecated Should be re-implemented as {@code formatWithSiPrefix} and take the plugin's configured locale into account.
+     */
+    @Deprecated
     public static String formatWithSuffix(long count) {
         if (count < 1000) {
             return String.valueOf(count);
@@ -33,19 +46,19 @@ public class NumberUtils {
     }
 
     public static boolean isInt(String number) {
-        if (number == null || number.equals("")) {
-            return false;
-        }
-
         try {
             Integer.parseInt(number);
             return true;
         } catch (NumberFormatException ignore) {
         }
-
         return false;
     }
 
+    /**
+     * @deprecated This allows floating point numbers and negative/positive numbers.
+     *         Should be re-implemented as {@code isNumber} if needed.
+     */
+    @Deprecated
     public static boolean isNumeric(String s) {
         if (s == null || s.equals("")) {
             return false;

Core/src/main/java/com/craftaro/core/utils/PlayerUtils.java

@@ -12,13 +12,11 @@ import java.util.Collection;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
-import java.util.Random;
 import java.util.Set;
+import java.util.concurrent.ThreadLocalRandom;
 import java.util.stream.Collectors;
 
 public class PlayerUtils {
-    static Random random = new Random();
-
     public static void sendMessages(Player player, String... messages) {
         for (String message : messages) {
             player.sendMessage(message);
@@ -26,9 +24,7 @@ public class PlayerUtils {
     }
 
     public static void sendMessages(Player player, List<String> messages) {
-        for (String message : messages) {
+        sendMessages(player, messages.toArray(new String[0]));
-            player.sendMessage(message);
-        }
     }
 
     /**
@@ -39,7 +35,10 @@ public class PlayerUtils {
      *                     start with this
      *
      * @return list of player names that are "visible" to the player
+     *
+     * @deprecated This method has a strong use-case for Command related code and should be reimplemented there
      */
+    @Deprecated
     public static List<String> getVisiblePlayerNames(CommandSender sender, String startingWith) {
         Player player = sender instanceof Player ? (Player) sender : null;
         final String startsWith = startingWith == null || startingWith.isEmpty() ? null : startingWith.toLowerCase();
@@ -60,7 +59,10 @@ public class PlayerUtils {
      *                     start with this
      *
      * @return list of player names that are "visible" to the player
+     *
+     * @deprecated This method has a strong use-case for Command related code and should be reimplemented there
      */
+    @Deprecated
     public static List<String> getVisiblePlayerDisplayNames(CommandSender sender, String startingWith) {
         Player player = sender instanceof Player ? (Player) sender : null;
         final String startsWith = startingWith == null || startingWith.isEmpty() ? null : startingWith.replaceAll("[^a-zA-Z]", "").toLowerCase();
@@ -81,7 +83,10 @@ public class PlayerUtils {
      *                     start with this
      *
      * @return list of players that are "visible" to the player
+     *
+     * @deprecated This method has a strong use-case for Command related code and should be reimplemented there
      */
+    @Deprecated
     public static List<Player> getVisiblePlayers(CommandSender sender, String startingWith) {
         Player player = sender instanceof Player ? (Player) sender : null;
         final String startsWith = startingWith == null || startingWith.isEmpty() ? null : startingWith.toLowerCase();
@@ -101,7 +106,10 @@ public class PlayerUtils {
      * @param startsWith All names returned must start with this input string
      *
      * @return List of matching player IGN
+     *
+     * @deprecated This method has a strong use-case for Command related code and should be reimplemented there
      */
+    @Deprecated
     public static List<String> getAllPlayers(CommandSender us, String startsWith) {
         final String arg = startsWith.toLowerCase();
 
@@ -118,7 +126,10 @@ public class PlayerUtils {
      * @param startsWith All names returned must start with this input string
      *
      * @return List of matching player display names
+     *
+     * @deprecated This method has a strong use-case for Command related code and should be reimplemented there
      */
+    @Deprecated
     public static List<String> getAllPlayersDisplay(CommandSender us, String startsWith) {
         // FIXME: Why do we need that regex? It just breaks the startsWith check
         //        + the DisplayName comparison is not made lower case
@@ -137,7 +148,10 @@ public class PlayerUtils {
      * @param player player to search for
      *
      * @return Player that closest matches the input name, or null if none found
+     *
+     * @deprecated This method has a strong use-case for Command related code and should probably be reimplemented there
      */
+    @Deprecated
     public static Player findPlayer(String player) {
         Player found = Bukkit.getServer().getPlayer(player);
 
@@ -181,7 +195,7 @@ public class PlayerUtils {
 
         final Iterator<? extends Player> alli = all.iterator();
 
-        int pick = random.nextInt(all.size());
+        int pick = ThreadLocalRandom.current().nextInt(all.size());
 
         for (; pick > 0; --pick) {
             alli.next();
@@ -230,6 +244,10 @@ public class PlayerUtils {
         }
     }
 
+    /**
+     * @deprecated The method should be moved to a more appropriate class
+     */
+    @Deprecated
     public static int getNumberFromPermission(Player player, String permission, int def) {
         final Set<PermissionAttachmentInfo> permissions = player.getEffectivePermissions();
 

Core/src/main/java/com/craftaro/core/utils/ReflectionUtils.java

@@ -29,6 +29,11 @@ import java.util.logging.Level;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 
+/**
+ * @deprecated The class is not used in the Core and existing usages in plugins should be re-implemented in the Core for
+ *         better stability between game versions.
+ */
+@Deprecated
 public class ReflectionUtils {
     public final static double JAVA_VERSION = getVersion();
     private static String system_os = System.getProperty("os.name").toLowerCase();

Core/src/main/java/com/craftaro/core/utils/RotationUtils.java

@@ -2,19 +2,23 @@ package com.craftaro.core.utils;
 
 import org.bukkit.block.BlockFace;
 
+/**
+ * @deprecated No replacement available
+ */
+@Deprecated
 public class RotationUtils {
     public static float faceToYaw(BlockFace face) {
         switch (face) {
-            case NORTH:
-                return 180F;
             case EAST:
-                return -90F;
+                return -90;
-            case SOUTH:
-                return 0F;
             case WEST:
-                return 90F;
+                return 90;
+            case NORTH:
+                return 180;
+
+            case SOUTH:
             default:
-                return 0F;
+                return 0;
         }
     }
 

Core/src/main/java/com/craftaro/core/world/SItemStack.java

@@ -1,9 +1,9 @@
 package com.craftaro.core.world;
 
 import com.craftaro.core.compatibility.CompatibleHand;
-import com.craftaro.core.compatibility.CompatibleSound;
 import com.craftaro.core.compatibility.ServerVersion;
 import com.craftaro.core.nms.Nms;
+import com.cryptomorin.xseries.XSound;
 import org.bukkit.Bukkit;
 import org.bukkit.enchantments.Enchantment;
 import org.bukkit.entity.Player;
@@ -23,7 +23,7 @@ public class SItemStack {
 
     public SItemStack(CompatibleHand hand, Player player) {
         this.item = hand.getItem(player);
-        this.sItem = Nms.getImplementations().getWorld().getItemStack(item);
+        this.sItem = Nms.getImplementations().getWorld().getItemStack(this.item);
     }
 
     public ItemStack addDamage(Player player, int damage) {
@@ -37,24 +37,24 @@ public class SItemStack {
      * @param damage the amount of damage to apply to the item
      */
     public ItemStack addDamage(Player player, int damage, boolean respectVanillaUnbreakingEnchantments) {
-        if (item == null) {
+        if (this.item == null) {
             return null;
         }
 
-        if (item.getItemMeta() == null) {
+        if (this.item.getItemMeta() == null) {
-            return item;
+            return this.item;
         }
 
-        int maxDurability = item.getType().getMaxDurability();
+        int maxDurability = this.item.getType().getMaxDurability();
         int durability;
 
         if (ServerVersion.isServerVersionBelow(ServerVersion.V1_11)
-                ? Nms.getImplementations().getNbt().of(item).has("Unbreakable")
+                ? Nms.getImplementations().getNbt().of(this.item).has("Unbreakable")
-                : item.getItemMeta().isUnbreakable()) {
+                : this.item.getItemMeta().isUnbreakable()) {
-            return item;
+            return this.item;
         } else if (ServerVersion.isServerVersionAtLeast(ServerVersion.V1_13)) {
             // ItemStack.setDurability(short) still works in 1.13-1.14, but use these methods now
-            ItemMeta meta = item.getItemMeta();
+            ItemMeta meta = this.item.getItemMeta();
             if (meta instanceof Damageable) {
                 Damageable damageable = ((Damageable) meta);
 
@@ -63,25 +63,25 @@ public class SItemStack {
                 }
 
                 damageable.setDamage(((Damageable) meta).getDamage() + damage);
-                item.setItemMeta(meta);
+                this.item.setItemMeta(meta);
                 durability = damageable.getDamage();
             } else {
-                return item;
+                return this.item;
             }
         } else {
             if (respectVanillaUnbreakingEnchantments) {
-                damage = shouldApplyDamage(item.getEnchantmentLevel(Enchantment.DURABILITY), damage);
+                damage = shouldApplyDamage(this.item.getEnchantmentLevel(Enchantment.DURABILITY), damage);
             }
 
-            item.setDurability((short) Math.max(0, item.getDurability() + damage));
+            this.item.setDurability((short) Math.max(0, this.item.getDurability() + damage));
-            durability = item.getDurability();
+            durability = this.item.getDurability();
         }
 
         if (durability >= maxDurability && player != null) {
             destroy(player);
         }
 
-        return item;
+        return this.item;
     }
 
     public void destroy(Player player) {
@@ -89,15 +89,15 @@ public class SItemStack {
     }
 
     public void destroy(Player player, int amount) {
-        PlayerItemBreakEvent breakEvent = new PlayerItemBreakEvent(player, item);
+        PlayerItemBreakEvent breakEvent = new PlayerItemBreakEvent(player, this.item);
         Bukkit.getServer().getPluginManager().callEvent(breakEvent);
 
-        sItem.breakItem(player, amount);
+        this.sItem.breakItem(player, amount);
-        CompatibleSound.ENTITY_ITEM_BREAK.play(player);
+        XSound.ENTITY_ITEM_BREAK.play(player);
     }
 
     public ItemStack getItem() {
-        return item;
+        return this.item;
     }
 
     private static int shouldApplyDamage(int unbreakingEnchantLevel, int damageAmount) {

Core/src/main/java/com/craftaro/core/world/SSpawner.java

@@ -1,10 +1,10 @@
 package com.craftaro.core.world;
 
-import com.craftaro.core.utils.EntityUtils;
-import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.hooks.EntityStackerManager;
 import com.craftaro.core.nms.Nms;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.craftaro.core.utils.EntityUtils;
+import com.cryptomorin.xseries.XMaterial;
 import org.bukkit.Location;
 import org.bukkit.block.CreatureSpawner;
 import org.bukkit.entity.EntityType;
@@ -39,9 +39,8 @@ public class SSpawner {
      *
      * @return amount of entities spawned
      */
-    public int spawn(int amountToSpawn, String particle, Set<CompatibleMaterial> canSpawnOn, SpawnedEntity spawned,
+    public int spawn(int amountToSpawn, String particle, Set<XMaterial> canSpawnOn, SpawnedEntity spawned, EntityType... types) {
-                     EntityType... types) {
+        if (this.location.getWorld() == null) {
-        if (location.getWorld() == null) {
             return 0;
         }
 
@@ -60,7 +59,7 @@ public class SSpawner {
         int amountSpawned = 0;
         while (spawnCountUsed-- > 0) {
             EntityType type = types[ThreadLocalRandom.current().nextInt(types.length)];
-            LivingEntity entity = sSpawner.spawnEntity(type, particle, spawned, canSpawnOn);
+            LivingEntity entity = this.sSpawner.spawnEntity(type, particle, spawned, canSpawnOn);
 
             if (entity != null) {
                 // If this entity is indeed stackable then spawn a single stack with the desired stack size.
@@ -79,6 +78,6 @@ public class SSpawner {
     }
 
     public Location getLocation() {
-        return location;
+        return this.location;
     }
 }

Core/src/main/java/com/craftaro/core/world/SWorld.java

@@ -29,13 +29,13 @@ public class SWorld {
 
     public List<LivingEntity> getLivingEntities() {
         if (ServerVersion.isServerVersionBelow(ServerVersion.V1_17)) {
-            return world.getLivingEntities();
+            return this.world.getLivingEntities();
         }
 
-        return sWorld.getLivingEntities();
+        return this.sWorld.getLivingEntities();
     }
 
     public World getWorld() {
-        return world;
+        return this.world;
     }
 }

Core/src/test/java/com/craftaro/core/CraftaroCoreConstantsTest.java

@@ -9,7 +9,7 @@ import java.util.regex.Pattern;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
-class SongodaCoreConstantsTest {
+class CraftaroCoreConstantsTest {
     // Pattern is from https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
     private static final Pattern VERSION_PATTERN = Pattern.compile("^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-((?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\\+([0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?$");
 
@@ -19,18 +19,18 @@ class SongodaCoreConstantsTest {
             throw new TestSkippedException("Skipping test because it requires the TESTS_RUN_WITH_MAVEN environment variable to be set to true");
         }
 
-        String coreVersion = SongodaCoreConstants.getCoreVersion();
+        String coreVersion = CraftaroCoreConstants.getCoreVersion();
 
         assertTrue(VERSION_PATTERN.matcher(coreVersion).matches(), "Version string is not a valid semver string: " + coreVersion);
     }
 
     @Test
     void getProjectName() {
-        assertFalse(SongodaCoreConstants.getProjectName().isEmpty());
+        assertFalse(CraftaroCoreConstants.getProjectName().isEmpty());
     }
 
     @Test
     void getGitHubProjectUrl() {
-        assertFalse(SongodaCoreConstants.getGitHubProjectUrl().isEmpty());
+        assertFalse(CraftaroCoreConstants.getGitHubProjectUrl().isEmpty());
     }
 }

NMS/NMS-API/src/main/java/com/craftaro/core/nms/NmsImplementations.java

@@ -2,12 +2,15 @@ package com.craftaro.core.nms;
 
 import com.craftaro.core.nms.anvil.AnvilCore;
 import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
+import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
-import com.craftaro.core.nms.nbt.NBTCore;
 import org.jetbrains.annotations.NotNull;
 
 public interface NmsImplementations {
+    @NotNull NmsEntity getEntity();
+
     @NotNull NMSPlayer getPlayer();
 
     @NotNull WorldCore getWorld();

NMS/NMS-API/src/main/java/com/craftaro/core/nms/entity/NmsEntity.java

@@ -0,0 +1,11 @@
+package com.craftaro.core.nms.entity;
+
+import org.bukkit.entity.Entity;
+
+public interface NmsEntity {
+    boolean isMob(Entity entity);
+
+    void setMobAware(Entity entity, boolean aware);
+
+    boolean isAware(Entity entity);
+}

NMS/NMS-API/src/main/java/com/craftaro/core/nms/world/SSpawner.java

@@ -1,6 +1,6 @@
 package com.craftaro.core.nms.world;
 
-import com.craftaro.core.compatibility.CompatibleMaterial;
+import com.cryptomorin.xseries.XMaterial;
 import org.apache.commons.text.WordUtils;
 import org.bukkit.Location;
 import org.bukkit.entity.EntityType;
@@ -11,8 +11,7 @@ import java.util.Set;
 public interface SSpawner {
     LivingEntity spawnEntity(EntityType type, Location spawnerLocation);
 
-    LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn);
-                             Set<CompatibleMaterial> canSpawnOn);
 
     default String translateName(EntityType type, boolean capital) {
         return capital ? TypeTranslations.getUpperFromType(type) : TypeTranslations.getLowerFromType(type);

NMS/NMS-v1_10_R1/src/main/java/com/craftaro/core/nms/v1_10_R1/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_10_R1;
 
+import com.craftaro.core.nms.NmsImplementations;
+import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
+import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.v1_10_R1.anvil.AnvilCore;
 import com.craftaro.core.nms.v1_10_R1.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_10_R1.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_10_R1.nbt.NBTCoreImpl;
 import com.craftaro.core.nms.v1_10_R1.world.NmsWorldBorderImpl;
 import com.craftaro.core.nms.v1_10_R1.world.WorldCoreImpl;
-import com.craftaro.core.nms.NmsImplementations;
-import com.craftaro.core.nms.entity.NMSPlayer;
-import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_10_R1/src/main/java/com/craftaro/core/nms/v1_10_R1/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_10_R1.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_10_R1.Entity;
+import net.minecraft.server.v1_10_R1.EntityInsentient;
+import org.bukkit.craftbukkit.v1_10_R1.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        nmsEntity.fromMobSpawner = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return nmsEntity.fromMobSpawner;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_10_R1/src/main/java/com/craftaro/core/nms/v1_10_R1/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_10_R1.BlockPosition;
 import net.minecraft.server.v1_10_R1.ChunkRegionLoader;
 import net.minecraft.server.v1_10_R1.DifficultyDamageScaler;
@@ -19,6 +20,7 @@ import org.bukkit.entity.EntityType;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 
+import java.util.Optional;
 import java.util.Random;
 import java.util.Set;
 
@@ -35,21 +37,20 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.b();
 
         compound.setString("id", translateName(type, true));
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.random;
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Entity entity = ChunkRegionLoader.a(compound, world, x, y, z, false);
 
@@ -63,7 +64,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -96,29 +97,28 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(EntityInsentient entityInsentient, Location location, Set<CompatibleMaterial> canSpawnOn) {
+    private boolean canSpawn(EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
         if (!entityInsentient.canSpawn()) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
-
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
-        if (spawnedIn == null || spawnedOn == null) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_11_R1/src/main/java/com/craftaro/core/nms/v1_11_R1/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_11_R1;
 
+import com.craftaro.core.nms.NmsImplementations;
+import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
+import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.v1_11_R1.anvil.AnvilCore;
 import com.craftaro.core.nms.v1_11_R1.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_11_R1.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_11_R1.nbt.NBTCoreImpl;
 import com.craftaro.core.nms.v1_11_R1.world.NmsWorldBorderImpl;
 import com.craftaro.core.nms.v1_11_R1.world.WorldCoreImpl;
-import com.craftaro.core.nms.NmsImplementations;
-import com.craftaro.core.nms.entity.NMSPlayer;
-import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_11_R1/src/main/java/com/craftaro/core/nms/v1_11_R1/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_11_R1.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_11_R1.Entity;
+import net.minecraft.server.v1_11_R1.EntityInsentient;
+import org.bukkit.craftbukkit.v1_11_R1.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        nmsEntity.fromMobSpawner = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return nmsEntity.fromMobSpawner;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_11_R1/src/main/java/com/craftaro/core/nms/v1_11_R1/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_11_R1.BlockPosition;
 import net.minecraft.server.v1_11_R1.ChunkRegionLoader;
 import net.minecraft.server.v1_11_R1.DifficultyDamageScaler;
@@ -19,6 +20,7 @@ import org.bukkit.entity.EntityType;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 
+import java.util.Optional;
 import java.util.Random;
 import java.util.Set;
 
@@ -35,24 +37,26 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.b();
 
-        String name = type.name().toLowerCase().replace("snowman", "snow_golem")
+        String name = type
+                .name()
+                .toLowerCase()
+                .replace("snowman", "snow_golem")
                 .replace("mushroom_cow", "mooshroom")
                 .replace("iron_golem", "villager_golem");
         compound.setString("id", "minecraft:" + name);
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.random;
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Entity entity = ChunkRegionLoader.a(compound, world, x, y, z, false);
 
@@ -66,7 +70,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -99,29 +103,29 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(EntityInsentient entityInsentient, Location location, Set<CompatibleMaterial> canSpawnOn) {
+    private boolean canSpawn(EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
         if (!entityInsentient.canSpawn()) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
 
-        if (spawnedIn == null || spawnedOn == null) {
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_12_R1/src/main/java/com/craftaro/core/nms/v1_12_R1/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_12_R1;
 
-import com.craftaro.core.nms.v1_12_R1.anvil.AnvilCore;
-import com.craftaro.core.nms.v1_12_R1.entity.NMSPlayerImpl;
-import com.craftaro.core.nms.v1_12_R1.world.NmsWorldBorderImpl;
-import com.craftaro.core.nms.v1_12_R1.world.WorldCoreImpl;
 import com.craftaro.core.nms.NmsImplementations;
 import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
 import com.craftaro.core.nms.nbt.NBTCore;
+import com.craftaro.core.nms.v1_12_R1.anvil.AnvilCore;
+import com.craftaro.core.nms.v1_12_R1.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_12_R1.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_12_R1.nbt.NBTCoreImpl;
+import com.craftaro.core.nms.v1_12_R1.world.NmsWorldBorderImpl;
+import com.craftaro.core.nms.v1_12_R1.world.WorldCoreImpl;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_12_R1/src/main/java/com/craftaro/core/nms/v1_12_R1/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_12_R1.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_12_R1.Entity;
+import net.minecraft.server.v1_12_R1.EntityInsentient;
+import org.bukkit.craftbukkit.v1_12_R1.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        nmsEntity.fromMobSpawner = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return nmsEntity.fromMobSpawner;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_12_R1/src/main/java/com/craftaro/core/nms/v1_12_R1/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_12_R1.BlockPosition;
 import net.minecraft.server.v1_12_R1.ChunkRegionLoader;
 import net.minecraft.server.v1_12_R1.DifficultyDamageScaler;
@@ -19,6 +20,7 @@ import org.bukkit.entity.EntityType;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 
+import java.util.Optional;
 import java.util.Random;
 import java.util.Set;
 
@@ -35,25 +37,27 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.b();
 
-        String name = type.name().toLowerCase().replace("snowman", "snow_golem")
+        String name = type
+                .name()
+                .toLowerCase()
+                .replace("snowman", "snow_golem")
                 .replace("mushroom_cow", "mooshroom")
-                .replace("iron_golem", "villager_golem");;
+                .replace("iron_golem", "villager_golem");
 
         compound.setString("id", "minecraft:" + name);
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.random;
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Entity entity = ChunkRegionLoader.a(compound, world, x, y, z, false);
 
@@ -67,7 +71,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -100,29 +104,29 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(EntityInsentient entityInsentient, Location location, Set<CompatibleMaterial> canSpawnOn) {
+    private boolean canSpawn(EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
         if (!entityInsentient.canSpawn()) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
 
-        if (spawnedIn == null || spawnedOn == null) {
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_13_R1/src/main/java/com/craftaro/core/nms/v1_13_R1/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_13_R1;
 
+import com.craftaro.core.nms.NmsImplementations;
+import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
+import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.v1_13_R1.anvil.AnvilCore;
 import com.craftaro.core.nms.v1_13_R1.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_13_R1.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_13_R1.nbt.NBTCoreImpl;
 import com.craftaro.core.nms.v1_13_R1.world.NmsWorldBorderImpl;
 import com.craftaro.core.nms.v1_13_R1.world.WorldCoreImpl;
-import com.craftaro.core.nms.NmsImplementations;
-import com.craftaro.core.nms.entity.NMSPlayer;
-import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_13_R1/src/main/java/com/craftaro/core/nms/v1_13_R1/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_13_R1.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_13_R1.Entity;
+import net.minecraft.server.v1_13_R1.EntityInsentient;
+import org.bukkit.craftbukkit.v1_13_R1.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        nmsEntity.fromMobSpawner = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return nmsEntity.fromMobSpawner;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_13_R1/src/main/java/com/craftaro/core/nms/v1_13_R1/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_13_R1.BlockPosition;
 import net.minecraft.server.v1_13_R1.ChunkRegionLoader;
 import net.minecraft.server.v1_13_R1.DifficultyDamageScaler;
@@ -19,6 +20,7 @@ import org.bukkit.entity.EntityType;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 
+import java.util.Optional;
 import java.util.Random;
 import java.util.Set;
 
@@ -35,8 +37,7 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.b();
 
@@ -45,13 +46,13 @@ public class SSpawnerImpl implements SSpawner {
         compound.setString("id", "minecraft:" + name);
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.random;
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Entity entity = ChunkRegionLoader.a(compound, world, x, y, z, false);
 
@@ -65,7 +66,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(world, entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -98,30 +99,29 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location,
+    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
-                             Set<CompatibleMaterial> canSpawnOn) {
         if (!world.getCubes(entityInsentient, entityInsentient.getBoundingBox())) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
 
-        if (spawnedIn == null || spawnedOn == null) {
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_13_R2/src/main/java/com/craftaro/core/nms/v1_13_R2/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_13_R2;
 
+import com.craftaro.core.nms.NmsImplementations;
+import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
+import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.v1_13_R2.anvil.AnvilCore;
 import com.craftaro.core.nms.v1_13_R2.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_13_R2.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_13_R2.nbt.NBTCoreImpl;
 import com.craftaro.core.nms.v1_13_R2.world.NmsWorldBorderImpl;
 import com.craftaro.core.nms.v1_13_R2.world.WorldCoreImpl;
-import com.craftaro.core.nms.NmsImplementations;
-import com.craftaro.core.nms.entity.NMSPlayer;
-import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_13_R2/src/main/java/com/craftaro/core/nms/v1_13_R2/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_13_R2.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_13_R2.Entity;
+import net.minecraft.server.v1_13_R2.EntityInsentient;
+import org.bukkit.craftbukkit.v1_13_R2.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        nmsEntity.fromMobSpawner = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return nmsEntity.fromMobSpawner;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_13_R2/src/main/java/com/craftaro/core/nms/v1_13_R2/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_13_R2.BlockPosition;
 import net.minecraft.server.v1_13_R2.ChunkRegionLoader;
 import net.minecraft.server.v1_13_R2.DifficultyDamageScaler;
@@ -19,6 +20,7 @@ import org.bukkit.entity.EntityType;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 
+import java.util.Optional;
 import java.util.Random;
 import java.util.Set;
 
@@ -35,8 +37,7 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.b();
 
@@ -45,13 +46,13 @@ public class SSpawnerImpl implements SSpawner {
         compound.setString("id", "minecraft:" + name);
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.random;
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Entity entity = ChunkRegionLoader.a(compound, world, x, y, z, false);
 
@@ -65,7 +66,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(world, entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -98,30 +99,29 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location,
+    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
-                             Set<CompatibleMaterial> canSpawnOn) {
         if (!world.getCubes(entityInsentient, entityInsentient.getBoundingBox())) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
 
-        if (spawnedIn == null || spawnedOn == null) {
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_14_R1/src/main/java/com/craftaro/core/nms/v1_14_R1/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_14_R1;
 
-import com.craftaro.core.nms.v1_14_R1.anvil.AnvilCore;
-import com.craftaro.core.nms.v1_14_R1.entity.NMSPlayerImpl;
-import com.craftaro.core.nms.v1_14_R1.world.NmsWorldBorderImpl;
-import com.craftaro.core.nms.v1_14_R1.world.WorldCoreImpl;
 import com.craftaro.core.nms.NmsImplementations;
 import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
 import com.craftaro.core.nms.nbt.NBTCore;
+import com.craftaro.core.nms.v1_14_R1.anvil.AnvilCore;
+import com.craftaro.core.nms.v1_14_R1.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_14_R1.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_14_R1.nbt.NBTCoreImpl;
+import com.craftaro.core.nms.v1_14_R1.world.NmsWorldBorderImpl;
+import com.craftaro.core.nms.v1_14_R1.world.WorldCoreImpl;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_14_R1/src/main/java/com/craftaro/core/nms/v1_14_R1/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_14_R1.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_14_R1.Entity;
+import net.minecraft.server.v1_14_R1.EntityInsentient;
+import org.bukkit.craftbukkit.v1_14_R1.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        nmsEntity.fromMobSpawner = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return nmsEntity.fromMobSpawner;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_14_R1/src/main/java/com/craftaro/core/nms/v1_14_R1/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_14_R1.BlockPosition;
 import net.minecraft.server.v1_14_R1.DifficultyDamageScaler;
 import net.minecraft.server.v1_14_R1.Entity;
@@ -37,24 +38,26 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.getEntity();
 
-        String name = type.name().toLowerCase().replace("snowman", "snow_golem")
+        String name = type
+                .name()
+                .toLowerCase()
+                .replace("snowman", "snow_golem")
                 .replace("mushroom_cow", "mooshroom");
         compound.setString("id", "minecraft:" + name);
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
             @SuppressWarnings("ConstantConditions")
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.getRandom();
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Optional<Entity> optionalEntity = EntityTypes.a(compound, world);
             if (!optionalEntity.isPresent()) continue;
@@ -71,7 +74,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(world, entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -104,30 +107,29 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location,
+    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
-                             Set<CompatibleMaterial> canSpawnOn) {
         if (!world.getCubes(entityInsentient, entityInsentient.getBoundingBox())) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
 
-        if (spawnedIn == null || spawnedOn == null) {
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_15_R1/src/main/java/com/craftaro/core/nms/v1_15_R1/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_15_R1;
 
-import com.craftaro.core.nms.v1_15_R1.anvil.AnvilCore;
-import com.craftaro.core.nms.v1_15_R1.entity.NMSPlayerImpl;
-import com.craftaro.core.nms.v1_15_R1.world.NmsWorldBorderImpl;
-import com.craftaro.core.nms.v1_15_R1.world.WorldCoreImpl;
 import com.craftaro.core.nms.NmsImplementations;
 import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
 import com.craftaro.core.nms.nbt.NBTCore;
+import com.craftaro.core.nms.v1_15_R1.anvil.AnvilCore;
+import com.craftaro.core.nms.v1_15_R1.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_15_R1.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_15_R1.nbt.NBTCoreImpl;
+import com.craftaro.core.nms.v1_15_R1.world.NmsWorldBorderImpl;
+import com.craftaro.core.nms.v1_15_R1.world.WorldCoreImpl;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_15_R1/src/main/java/com/craftaro/core/nms/v1_15_R1/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_15_R1.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_15_R1.Entity;
+import net.minecraft.server.v1_15_R1.EntityInsentient;
+import org.bukkit.craftbukkit.v1_15_R1.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        nmsEntity.fromMobSpawner = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return nmsEntity.fromMobSpawner;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_15_R1/src/main/java/com/craftaro/core/nms/v1_15_R1/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_15_R1.BlockPosition;
 import net.minecraft.server.v1_15_R1.DifficultyDamageScaler;
 import net.minecraft.server.v1_15_R1.Entity;
@@ -37,24 +38,26 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.getEntity();
 
-        String name = type.name().toLowerCase().replace("snowman", "snow_golem")
+        String name = type
+                .name()
+                .toLowerCase()
+                .replace("snowman", "snow_golem")
                 .replace("mushroom_cow", "mooshroom");
         compound.setString("id", "minecraft:" + name);
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
             @SuppressWarnings("ConstantConditions")
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.getRandom();
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Optional<Entity> optionalEntity = EntityTypes.a(compound, world);
             if (!optionalEntity.isPresent()) {
@@ -73,7 +76,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(world, entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -106,30 +109,29 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location,
+    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
-                             Set<CompatibleMaterial> canSpawnOn) {
         if (!world.getCubes(entityInsentient, entityInsentient.getBoundingBox())) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
 
-        if (spawnedIn == null || spawnedOn == null) {
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_16_R1/src/main/java/com/craftaro/core/nms/v1_16_R1/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_16_R1;
 
+import com.craftaro.core.nms.NmsImplementations;
+import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
+import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.v1_16_R1.anvil.AnvilCore;
 import com.craftaro.core.nms.v1_16_R1.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_16_R1.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_16_R1.nbt.NBTCoreImpl;
 import com.craftaro.core.nms.v1_16_R1.world.NmsWorldBorderImpl;
 import com.craftaro.core.nms.v1_16_R1.world.WorldCoreImpl;
-import com.craftaro.core.nms.NmsImplementations;
-import com.craftaro.core.nms.entity.NMSPlayer;
-import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_16_R1/src/main/java/com/craftaro/core/nms/v1_16_R1/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_16_R1.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_16_R1.Entity;
+import net.minecraft.server.v1_16_R1.EntityInsentient;
+import org.bukkit.craftbukkit.v1_16_R1.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        ((EntityInsentient) nmsEntity).aware = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return ((EntityInsentient) nmsEntity).aware;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_16_R1/src/main/java/com/craftaro/core/nms/v1_16_R1/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_16_R1.BlockPosition;
 import net.minecraft.server.v1_16_R1.DifficultyDamageScaler;
 import net.minecraft.server.v1_16_R1.Entity;
@@ -37,8 +38,7 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.getEntity();
 
@@ -47,14 +47,14 @@ public class SSpawnerImpl implements SSpawner {
         compound.setString("id", "minecraft:" + name);
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
             @SuppressWarnings("ConstantConditions")
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.getRandom();
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Optional<Entity> optionalEntity = EntityTypes.a(compound, world);
             if (!optionalEntity.isPresent()) {
@@ -73,7 +73,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(world, entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -106,30 +106,29 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location,
+    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
-                             Set<CompatibleMaterial> canSpawnOn) {
         if (!world.getCubes(entityInsentient, entityInsentient.getBoundingBox())) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
 
-        if (spawnedIn == null || spawnedOn == null) {
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_16_R2/src/main/java/com/craftaro/core/nms/v1_16_R2/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_16_R2;
 
+import com.craftaro.core.nms.NmsImplementations;
+import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
+import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.v1_16_R2.anvil.AnvilCore;
 import com.craftaro.core.nms.v1_16_R2.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_16_R2.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_16_R2.nbt.NBTCoreImpl;
 import com.craftaro.core.nms.v1_16_R2.world.NmsWorldBorderImpl;
 import com.craftaro.core.nms.v1_16_R2.world.WorldCoreImpl;
-import com.craftaro.core.nms.NmsImplementations;
-import com.craftaro.core.nms.entity.NMSPlayer;
-import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;

NMS/NMS-v1_16_R2/src/main/java/com/craftaro/core/nms/v1_16_R2/entity/NmsEntityImpl.java

@@ -0,0 +1,33 @@
+package com.craftaro.core.nms.v1_16_R2.entity;
+
+import com.craftaro.core.nms.entity.NmsEntity;
+import net.minecraft.server.v1_16_R2.Entity;
+import net.minecraft.server.v1_16_R2.EntityInsentient;
+import org.bukkit.craftbukkit.v1_16_R2.entity.CraftEntity;
+
+public class NmsEntityImpl implements NmsEntity {
+    @Override
+    public boolean isMob(org.bukkit.entity.Entity entity) {
+        return ((CraftEntity) entity).getHandle() instanceof EntityInsentient;
+    }
+
+    @Override
+    public void setMobAware(org.bukkit.entity.Entity entity, boolean aware) {
+        if (!isMob(entity)) {
+            throw new IllegalArgumentException("Entity is not a mob and cannot be set aware");
+        }
+
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        ((EntityInsentient) nmsEntity).aware = aware;
+    }
+
+    @Override
+    public boolean isAware(org.bukkit.entity.Entity entity) {
+        Entity nmsEntity = ((CraftEntity) entity).getHandle();
+        if (nmsEntity instanceof EntityInsentient) {
+            return ((EntityInsentient) nmsEntity).aware;
+        }
+
+        return false;
+    }
+}

NMS/NMS-v1_16_R2/src/main/java/com/craftaro/core/nms/v1_16_R2/world/SSpawnerImpl.java

@@ -4,6 +4,7 @@ import com.craftaro.core.compatibility.CompatibleMaterial;
 import com.craftaro.core.compatibility.CompatibleParticleHandler;
 import com.craftaro.core.nms.world.SSpawner;
 import com.craftaro.core.nms.world.SpawnedEntity;
+import com.cryptomorin.xseries.XMaterial;
 import net.minecraft.server.v1_16_R2.BlockPosition;
 import net.minecraft.server.v1_16_R2.DifficultyDamageScaler;
 import net.minecraft.server.v1_16_R2.Entity;
@@ -37,8 +38,7 @@ public class SSpawnerImpl implements SSpawner {
     }
 
     @Override
-    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned,
+    public LivingEntity spawnEntity(EntityType type, String particleType, SpawnedEntity spawned, Set<XMaterial> canSpawnOn) {
-                                    Set<CompatibleMaterial> canSpawnOn) {
         MobSpawnerData data = new MobSpawnerData();
         NBTTagCompound compound = data.getEntity();
 
@@ -47,14 +47,14 @@ public class SSpawnerImpl implements SSpawner {
         compound.setString("id", "minecraft:" + name);
 
         short spawnRange = 4;
-        for (int i = 0; i < 50; i++) {
+        for (int i = 0; i < 50; ++i) {
             @SuppressWarnings("ConstantConditions")
-            WorldServer world = ((CraftWorld) spawnerLocation.getWorld()).getHandle();
+            WorldServer world = ((CraftWorld) this.spawnerLocation.getWorld()).getHandle();
 
             Random random = world.getRandom();
-            double x = spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double x = this.spawnerLocation.getX() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
-            double y = spawnerLocation.getY() + random.nextInt(3) - 1;
+            double y = this.spawnerLocation.getY() + random.nextInt(3) - 1;
-            double z = spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
+            double z = this.spawnerLocation.getZ() + (random.nextDouble() - random.nextDouble()) * (double) spawnRange + 0.5D;
 
             Optional<Entity> optionalEntity = EntityTypes.a(compound, world);
             if (!optionalEntity.isPresent()) {
@@ -73,7 +73,7 @@ public class SSpawnerImpl implements SSpawner {
 
             EntityInsentient entityInsentient = (EntityInsentient) entity;
 
-            Location spot = new Location(spawnerLocation.getWorld(), x, y, z);
+            Location spot = new Location(this.spawnerLocation.getWorld(), x, y, z);
             if (!canSpawn(world, entityInsentient, spot, canSpawnOn)) {
                 continue;
             }
@@ -106,30 +106,29 @@ public class SSpawnerImpl implements SSpawner {
         return null;
     }
 
-    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location,
+    private boolean canSpawn(WorldServer world, EntityInsentient entityInsentient, Location location, Set<XMaterial> canSpawnOn) {
-                             Set<CompatibleMaterial> canSpawnOn) {
         if (!world.getCubes(entityInsentient, entityInsentient.getBoundingBox())) {
             return false;
         }
 
-        CompatibleMaterial spawnedIn = CompatibleMaterial.getMaterial(location.getBlock());
+        Optional<XMaterial> spawnedIn = CompatibleMaterial.getMaterial(location.getBlock().getType());
-        CompatibleMaterial spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN));
+        Optional<XMaterial> spawnedOn = CompatibleMaterial.getMaterial(location.getBlock().getRelative(BlockFace.DOWN).getType());
 
-        if (spawnedIn == null || spawnedOn == null) {
+        if (!spawnedIn.isPresent() || !spawnedOn.isPresent()) {
             return false;
         }
 
-        if (!spawnedIn.isAir() &&
+        if (!CompatibleMaterial.isAir(spawnedIn.get()) &&
-                spawnedIn != CompatibleMaterial.WATER &&
+                spawnedIn.get() != XMaterial.WATER &&
-                !spawnedIn.name().contains("PRESSURE") &&
+                !spawnedIn.get().name().contains("PRESSURE") &&
-                !spawnedIn.name().contains("SLAB")) {
+                !spawnedIn.get().name().contains("SLAB")) {
             return false;
         }
 
-        for (CompatibleMaterial material : canSpawnOn) {
+        for (XMaterial material : canSpawnOn) {
             if (material == null) continue;
 
-            if (spawnedOn.equals(material) || material.isAir()) {
+            if (spawnedOn.get() == material || CompatibleMaterial.isAir(material)) {
                 return true;
             }
         }

NMS/NMS-v1_16_R3/src/main/java/com/craftaro/core/nms/v1_16_R3/NmsImplementationsImpl.java

@@ -1,19 +1,22 @@
 package com.craftaro.core.nms.v1_16_R3;
 
+import com.craftaro.core.nms.NmsImplementations;
+import com.craftaro.core.nms.entity.NMSPlayer;
+import com.craftaro.core.nms.entity.NmsEntity;
+import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.v1_16_R3.anvil.AnvilCore;
 import com.craftaro.core.nms.v1_16_R3.entity.NMSPlayerImpl;
+import com.craftaro.core.nms.v1_16_R3.entity.NmsEntityImpl;
 import com.craftaro.core.nms.v1_16_R3.nbt.NBTCoreImpl;
 import com.craftaro.core.nms.v1_16_R3.world.NmsWorldBorderImpl;
 import com.craftaro.core.nms.v1_16_R3.world.WorldCoreImpl;
-import com.craftaro.core.nms.NmsImplementations;
-import com.craftaro.core.nms.entity.NMSPlayer;
-import com.craftaro.core.nms.nbt.NBTCore;
 import com.craftaro.core.nms.world.NmsWorldBorder;
 import com.craftaro.core.nms.world.WorldCore;
 import org.jetbrains.annotations.NotNull;
 
 @SuppressWarnings("unused")
 public class NmsImplementationsImpl implements NmsImplementations {
+    private final NmsEntity entity;
     private final NMSPlayer player;
     private final WorldCore world;
     private final NmsWorldBorder worldBorder;
@@ -21,6 +24,7 @@ public class NmsImplementationsImpl implements NmsImplementations {
     private final NBTCore nbt;
 
     public NmsImplementationsImpl() {
+        this.entity = new NmsEntityImpl();
         this.player = new NMSPlayerImpl();
         this.world = new WorldCoreImpl();
         this.worldBorder = new NmsWorldBorderImpl();
@@ -28,6 +32,11 @@ public class NmsImplementationsImpl implements NmsImplementations {
         this.nbt = new NBTCoreImpl();
     }
 
+    @Override
+    public @NotNull NmsEntity getEntity() {
+        return this.entity;
+    }
+
     @Override
     public @NotNull NMSPlayer getPlayer() {
         return this.player;