Merge branch 'moduletest' into 'development'

Add anvil, cmi, nms classes

See merge request Songoda/songodaupdater!12

.gitignore

@@ -9,3 +9,5 @@ release.properties
 dependency-reduced-pom.xml
 buildNumber.properties
 .mvn/timing.properties
+nbactions.xml
+nb-configuration.xml

.gitlab-ci.yml

@@ -4,7 +4,7 @@ stages:
 variables:
   name: "SongodaCore"
   path: "/builds/$CI_PROJECT_PATH"
-  version: "2.1.4"
+  version: "2.1.6"
 
 build:
   stage: build
@@ -15,7 +15,7 @@ build:
     - find $path/ -type f -name "*SongodaCore.java" -print0 | xargs -0 sed -i -e s/maven-version-number/$version/g
     - mvn clean package
     - find $path/ -depth -path '*original*' -delete
-    - mv $path/target/*.jar $path/
+    - mv $path/Core/target/*.jar $path/
   artifacts:
     name: $name-$version
     paths:

Core/pom.xml

@@ -0,0 +1,300 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0">
+
+    <parent>
+        <groupId>com.songoda</groupId>
+        <artifactId>SongodaCore-Modules</artifactId>
+        <version>maven-version-number</version>
+        <relativePath>../</relativePath>
+    </parent>
+
+    <groupId>com.songoda</groupId>
+    <artifactId>SongodaCore</artifactId>
+
+    <modelVersion>4.0.0</modelVersion>
+    <packaging>jar</packaging>
+
+    <build>
+        <sourceDirectory>src/main/java</sourceDirectory>
+        <defaultGoal>clean install</defaultGoal>
+        <finalName>SongodaCore-${project.version}</finalName>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>3.1.0</version>
+                <executions>
+                    <execution>
+                        <id>shaded</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <shadedArtifactAttached>false</shadedArtifactAttached>
+                            <createDependencyReducedPom>true</createDependencyReducedPom>
+                            <artifactSet>
+                                <includes>
+                                    <include>com.songoda:*</include>
+                                </includes>
+                            </artifactSet>
+                            <filters>
+                            <filter>
+                                <artifact>*:*</artifact>
+                                <includes>
+                                    <include>com/</include>
+                                    <include>META-INF/MANIFEST.MF</include>
+                                    <include>META-INF/maven/com.songoda/SongodaCore/</include>
+                                </includes>
+                            </filter>
+                        </filters>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <!--
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <version>3.1.1</version>
+                <configuration>
+                    <appendAssemblyId>false</appendAssemblyId>
+                    <descriptors>
+                        <descriptor>../assembly.xml</descriptor>
+                    </descriptors>
+                    <finalName>SongodaCore-${project.version}</finalName>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>make-assembly</id>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>-->
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>com.destroystokyo.papermc</groupId>
+            <artifactId>paper</artifactId>
+            <version>1.14.4</version>
+            <scope>provided</scope>
+        </dependency>
+        <!--dependency>
+            <groupId>org.spigotmc</groupId>
+            <artifactId>spigot</artifactId>
+            <version>1.14.4</version>
+        </dependency-->
+        <!-- Need to include all NMS modules here -->
+        <!-- Note when adding a new module: include the class in NmsManager -->
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-API</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_8_R1</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_8_R2</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_8_R3</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_9_R1</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_9_R2</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_10_R1</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_11_R1</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_12_R1</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_13_R1</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_13_R2</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>${project.groupId}</groupId>
+            <artifactId>SongodaCore-NMS-v1_14_R1</artifactId>
+            <version>${project.version}</version>
+            <type>jar</type>
+            <scope>compile</scope>
+        </dependency>
+        <!-- End NMS -->
+        <dependency>
+            <groupId>com.gmail.filoghost.holographicdisplays</groupId>
+            <artifactId>holographicdisplays-api</artifactId>
+            <version>2.3.2</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.sainttx.holograms</groupId>
+            <artifactId>Holograms</artifactId>
+            <version>2.9.1</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.zrips</groupId>
+            <artifactId>CMI</artifactId>
+            <version>8.4.0.2_1</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>net.tnemc</groupId>
+            <artifactId>Reserve</artifactId>
+            <version>0.1.3.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.black_ixx</groupId>
+            <artifactId>PlayerPoints</artifactId>
+            <version>2.1.4</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>net.milkbowl</groupId>
+            <artifactId>VaultAPI</artifactId>
+            <version>1.7.2</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>us.myles.viaversion-bukkit</groupId>
+            <artifactId>ViaVersion</artifactId>
+            <version>2.1.3</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>protocolsupport</groupId>
+            <artifactId>ProtocolSupport</artifactId>
+            <version>4.29</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.googlecode.json-simple</groupId>
+            <artifactId>json-simple</artifactId>
+            <version>1.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains</groupId>
+            <artifactId>annotations</artifactId>
+            <version>13.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+            <version>1.25</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>1.7.25</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-nop</artifactId>
+            <version>1.7.25</version>
+        </dependency>
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>3.2.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.xerial</groupId>
+            <artifactId>sqlite-jdbc</artifactId>
+            <version>3.23.1</version>
+        </dependency>
+        <dependency>
+            <groupId>com.sk89q.worldguard</groupId>
+            <artifactId>worldguard-bukkit</artifactId>
+            <version>7.0.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.sk89q.worldedit</groupId>
+            <artifactId>worldedit-bukkit</artifactId>
+            <version>7.0.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.songoda</groupId>
+            <artifactId>UltimateStacker</artifactId>
+            <version>1.9.6</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.bgsoftware</groupId>
+            <artifactId>WildStacker</artifactId>
+            <version>2-9-0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>uk.antiperson</groupId>
+            <artifactId>stackmob</artifactId>
+            <version>4-0-2</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+</project>

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

@@ -76,6 +76,7 @@ public abstract class SongodaPlugin extends JavaPlugin {
             return;
         }
 
+        console.sendMessage(""); // blank line to speparate chatter
         console.sendMessage(ChatColor.GREEN + "=============================");
         console.sendMessage(String.format("%s%s %s by %sSongoda <3!", ChatColor.GRAY.toString(),
                 getDescription().getName(), getDescription().getVersion(), ChatColor.DARK_PURPLE.toString()));
@@ -88,6 +89,7 @@ public abstract class SongodaPlugin extends JavaPlugin {
             onPluginEnable();
             if(emergencyStop) {
                 console.sendMessage(ChatColor.RED + "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
+                console.sendMessage("");
                 return;
             }
             // Start Metrics
@@ -96,10 +98,12 @@ public abstract class SongodaPlugin extends JavaPlugin {
             getLogger().log(Level.SEVERE, "Unexpected error while loading " + getDescription().getName() + ": Disabling plugin!", t);
             emergencyStop();
             console.sendMessage(ChatColor.RED + "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
+            console.sendMessage("");
             return;
         }
 
         console.sendMessage(ChatColor.GREEN + "=============================");
+        console.sendMessage(""); // blank line to speparate chatter
     }
 
     protected void emergencyStop() {
@@ -112,6 +116,7 @@ public abstract class SongodaPlugin extends JavaPlugin {
         if (emergencyStop) {
             return;
         }
+        console.sendMessage(""); // blank line to speparate chatter
         console.sendMessage(ChatColor.GREEN + "=============================");
         console.sendMessage(String.format("%s%s %s by %sSongoda <3!", ChatColor.GRAY.toString(),
                 getDescription().getName(), getDescription().getVersion(), ChatColor.DARK_PURPLE.toString()));
@@ -119,6 +124,7 @@ public abstract class SongodaPlugin extends JavaPlugin {
                 ChatColor.RED.toString(), "Disabling", ChatColor.GRAY.toString()));
         onPluginDisable();
         console.sendMessage(ChatColor.GREEN + "=============================");
+        console.sendMessage(""); // blank line to speparate chatter
     }
 
     public ConsoleCommandSender getConsole() {

Core/src/main/java/com/songoda/core/compatibility/ServerVersion.java

@@ -25,10 +25,18 @@ public enum ServerVersion {
         return this.ordinal() < other.ordinal();
     }
 
+    public boolean isAtOrBelow(ServerVersion other) {
+        return this.ordinal() <= other.ordinal();
+    }
+
     public boolean isGreaterThan(ServerVersion other) {
         return this.ordinal() > other.ordinal();
     }
 
+    public boolean isAtLeast(ServerVersion other) {
+        return this.ordinal() >= other.ordinal();
+    }
+
     public static String getServerVersionString() {
         return serverPackageVersion;
     }

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

@@ -0,0 +1,100 @@
+package com.songoda.core.gui;
+
+import com.songoda.core.compatibility.CompatibleMaterial;
+import com.songoda.core.gui.methods.Clickable;
+import com.songoda.core.nms.CoreNMS;
+import com.songoda.core.nms.CustomAnvil;
+import com.songoda.core.nms.NmsManager;
+import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.ClickType;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Anvil GUI for text prompts
+ *
+ * @since 2019-09-15
+ * @author jascotty2
+ */
+public class AnvilGui extends Gui {
+
+    final Player player;
+    CustomAnvil anvil;
+
+    public AnvilGui(Player player) {
+        this.player = player;
+    }
+
+    public AnvilGui(Player player, Gui parent) {
+        super(parent);
+        this.player = player;
+    }
+
+    @NotNull
+    public AnvilGui setAction(@Nullable Clickable action) {
+        return (AnvilGui) setAction(2, action);
+    }
+
+    @NotNull
+    public AnvilGui setAction(@Nullable ClickType type, @Nullable Clickable action) {
+        return (AnvilGui) setAction(2, type, action);
+    }
+
+    protected void open() {
+        anvil.open();
+    }
+
+    public AnvilGui setInput(ItemStack item) {
+        return (AnvilGui) this.setItem(0, item);
+    }
+
+    public ItemStack getInput() {
+        return this.getItem(0);
+    }
+
+    public AnvilGui setOutput(ItemStack item) {
+        return (AnvilGui) this.setItem(2, item);
+    }
+
+    public ItemStack getOutput() {
+        return this.getItem(2);
+    }
+
+    public String getInputText() {
+        return anvil != null ? anvil.getRenameText() : null;
+    }
+
+    @NotNull
+    @Override
+    protected Inventory generateInventory(@NotNull GuiManager manager) {
+        this.guiManager = manager;
+
+        createInventory();
+        ItemStack item;
+        if ((item = cellItems.get(0)) != null) {
+            inventory.setItem(0, item);
+        } else if ((item = cellItems.get(1)) != null) {
+            inventory.setItem(1, item);
+        } else if (!acceptsItems) {
+            inventory.setItem(0, GuiUtils.createButtonItem(CompatibleMaterial.PAPER, " ", " "));
+        }
+        if ((item = cellItems.get(2)) != null) {
+            inventory.setItem(2, item);
+        }
+
+        return inventory;
+    }
+
+    @Override
+    protected void createInventory() {
+        CoreNMS nms = NmsManager.getNMS();
+        if (nms != null) {
+            anvil = nms.createAnvil(player, new GuiHolder(guiManager, this));
+            anvil.setCustomTitle(title);
+            anvil.setLevelCost(0);
+            inventory = anvil.getInventory();
+        }
+    }
+}

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

@@ -74,24 +74,43 @@ public class GuiManager {
      */
     public void showGUI(Player player, Gui gui) {
         if (shutdown) {
-            return;
+            if(plugin.isEnabled()) {
+                // recover if reloaded without calling init manually
+                init();
+            } else {
+               return; 
+            }
         } else if (!initialized) {
             init();
         }
-        Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
+        if (gui instanceof AnvilGui) {
+            // bukkit throws a fit now if you try to set anvil stuff asynchronously
             Gui openInv = openInventories.get(player);
             if (openInv != null) {
                 openInv.open = false;
             }
-            Inventory inv = gui.getOrCreateInventory(this);
-            Bukkit.getScheduler().runTask(plugin, () -> {
-                player.openInventory(inv);
-                gui.onOpen(this, player);
-                synchronized(lock) {
-                    openInventories.put(player, gui);
+            gui.getOrCreateInventory(this);
+            ((AnvilGui) gui).open();
+            gui.onOpen(this, player);
+            synchronized (lock) {
+                openInventories.put(player, gui);
+            }
+        } else {
+            Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
+                Gui openInv = openInventories.get(player);
+                if (openInv != null) {
+                    openInv.open = false;
                 }
+                Inventory inv = gui.getOrCreateInventory(this);
+                Bukkit.getScheduler().runTask(plugin, () -> {
+                    player.openInventory(inv);
+                    gui.onOpen(this, player);
+                    synchronized(lock) {
+                        openInventories.put(player, gui);
+                    }
+                });
             });
-        });
+        }
     }
 
     public void showPopup(Player player, String message) {
@@ -103,7 +122,7 @@ public class GuiManager {
     }
 
     public void showPopup(Player player, String message, CompatibleMaterial icon, BackgroundType background) {
-        if (ClientVersion.getClientVersion(player).isServerVersionAtLeast(ServerVersion.V1_12)) {
+        if (ClientVersion.getClientVersion(player).isAtLeast(ServerVersion.V1_12)) {
             PopupMessage popup = new PopupMessage(plugin, icon, message, background);
             popup.add();
             popup.grant(player);
@@ -195,7 +214,11 @@ public class GuiManager {
             if (openInv.getHolder() != null && openInv.getHolder() instanceof GuiHolder
                     && ((GuiHolder) openInv.getHolder()).manager.uuid.equals(manager.uuid)) {
                 Gui gui = ((GuiHolder) openInv.getHolder()).getGUI();
-                if(!gui.open) {
+                if (gui instanceof AnvilGui) {
+                    gui.inventory.clear();
+                    gui.inventory = null;
+                }
+                if (!gui.open) {
                     return;
                 }
                 final Player player = (Player) event.getPlayer();

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

@@ -31,9 +31,8 @@ class PopupMessage {
     private final NamespacedKey key;
     private final TextComponent title;
     CompatibleMaterial icon;
-    int iconAmount = 1; // experimental, untested
     TriggerType trigger = TriggerType.IMPOSSIBLE;
-    FrameType frame = FrameType.GOAL;
+    FrameType frame = FrameType.GOAL; // TASK is the default
     BackgroundType background = BackgroundType.ADVENTURE;
 
     PopupMessage(Plugin source, CompatibleMaterial icon, String title) {
@@ -58,9 +57,6 @@ class PopupMessage {
             if (this.icon.usesData()) {
                 displayIcon.addProperty("data", this.icon.getData());
             }
-            if (this.iconAmount > 1) {
-                displayIcon.addProperty("amount", this.iconAmount); // not entirely sure if this works
-            }
             advDisplay.add("icon", displayIcon);
         }
         advDisplay.add("title", gson.fromJson(ComponentSerializer.toString(this.title), JsonElement.class));

Core/src/main/java/com/songoda/core/hooks/PluginHook.java

@@ -4,6 +4,7 @@ import com.songoda.core.hooks.economies.Economy;
 import com.songoda.core.hooks.economies.PlayerPointsEconomy;
 import com.songoda.core.hooks.economies.ReserveEconomy;
 import com.songoda.core.hooks.economies.VaultEconomy;
+import com.songoda.core.hooks.holograms.CMIHolograms;
 import com.songoda.core.hooks.stackers.StackMob;
 import com.songoda.core.hooks.stackers.Stacker;
 import com.songoda.core.hooks.stackers.UltimateStacker;
@@ -33,6 +34,7 @@ public final class PluginHook <T extends Class> {
     public static final PluginHook STACKER_STACK_MOB    = new PluginHook(Stacker.class, "StackMob", StackMob.class);
     public static final PluginHook HOLO_DISPLAYS        = new PluginHook(Holograms.class, "HolographicDisplays", HolographicDisplaysHolograms.class);
     public static final PluginHook HOLO_HOLOGRAMS       = new PluginHook(Holograms.class, "Holograms", HologramsHolograms.class);
+    public static final PluginHook HOLO_CMI             = new PluginHook(Holograms.class, "CMI", CMIHolograms.class);
 
     /******* Start Manager stuff *******/
 

Core/src/main/java/com/songoda/core/hooks/holograms/CMIHolograms.java

@@ -0,0 +1,135 @@
+package com.songoda.core.hooks.holograms;
+
+import com.Zrips.CMI.CMI;
+import com.Zrips.CMI.Modules.Holograms.CMIHologram;
+import com.Zrips.CMI.Modules.Holograms.HologramManager;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.plugin.Plugin;
+
+public class CMIHolograms extends Holograms {
+
+    CMI cmi;
+    HologramManager cmiHologramManager;
+    HashSet<String> ourHolograms = new HashSet();
+    Method cmi_CMIHologram_getLines;
+
+    {
+        try {
+            // test if we need to watch if the lines is an array
+            if (CMIHologram.class.getDeclaredField("lines").getDeclaringClass() == String[].class) {
+                cmi_CMIHologram_getLines = CMIHologram.class.getMethod("getLines");
+            }
+        } catch (Exception ex) {
+        }
+    }
+
+    public CMIHolograms(Plugin plugin) {
+        super(plugin);
+        cmi = (CMI) Bukkit.getPluginManager().getPlugin("CMI");
+        if (cmi != null) {
+            cmiHologramManager = cmi.getHologramManager();
+        }
+    }
+
+    @Override
+    public String getName() {
+        return "CMI";
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return cmi != null && cmi.isEnabled();
+    }
+
+    @Override
+    protected double defaultHeightOffset() {
+        return 0.5;
+    }
+
+    @Override
+    public void createHologram(Location location, List<String> lines) {
+        createAt(fixLocation(location), lines);
+    }
+
+    @Override
+    public void removeHologram(Location location) {
+        location = fixLocation(location);
+        final String id = locStr(location);
+        CMIHologram holo = cmiHologramManager.getByName(id);
+        if (holo != null) {
+            cmiHologramManager.removeHolo(holo);
+        }
+        ourHolograms.remove(id);
+    }
+
+    @Override
+    public void removeAllHolograms() {
+        for (String id : ourHolograms) {
+            CMIHologram holo = cmiHologramManager.getByName(id);
+            if (holo != null) {
+                cmiHologramManager.removeHolo(holo);
+            }
+        }
+        ourHolograms.clear();
+    }
+
+    @Override
+    public void updateHologram(Location location, List<String> lines) {
+        location = fixLocation(location);
+        CMIHologram holo = cmiHologramManager.getByName(locStr(location));
+        if (holo != null) {
+            // only update if there is a change to the text
+            List<String> holoLines;
+            if (cmi_CMIHologram_getLines != null) {
+                try {
+                    holoLines = Arrays.asList((String[]) cmi_CMIHologram_getLines.invoke(holo));
+                } catch (Exception ex) {
+                    Logger.getLogger(CMIHolograms.class.getName()).log(Level.SEVERE, "CMI Hologram error!", ex);
+                    holoLines = Collections.EMPTY_LIST;
+                }
+            } else {
+                holoLines = holo.getLines();
+            }
+            boolean isChanged = lines.size() != holoLines.size();
+            if (!isChanged) {
+                // double-check the lines
+                for (int i = 0; !isChanged && i < lines.size(); ++i) {
+                    isChanged = !holo.getLine(i).equals(lines.get(i));
+                }
+            }
+            if (isChanged) {
+                holo.setLines(lines);
+                holo.update();
+            }
+            return;
+        }
+        createAt(location, lines);
+    }
+
+    private String locStr(Location loc) {
+        return String.format("%s-%d-%d-%d", loc.getWorld().getName(), loc.getBlockX(), loc.getBlockY(), loc.getBlockZ());
+    }
+
+    private void createAt(Location location, List<String> lines) {
+
+        final String id = locStr(location);
+        CMIHologram holo = new CMIHologram(id, location);
+        holo.setLines(lines);
+
+        cmiHologramManager.addHologram(holo);
+        holo.update();
+
+        if (!ourHolograms.contains(id)) {
+            ourHolograms.add(id);
+        }
+    }
+
+}

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

@@ -5,11 +5,10 @@ import com.sainttx.holograms.api.HologramPlugin;
 import com.sainttx.holograms.api.line.HologramLine;
 import com.sainttx.holograms.api.line.TextLine;
 import java.util.HashSet;
-import org.bukkit.Location;
-import org.bukkit.plugin.Plugin;
-
 import java.util.List;
 import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.plugin.Plugin;
 
 public class HologramsHolograms extends Holograms {
 

Core/src/main/java/com/songoda/core/nms/NmsManager.java

@@ -0,0 +1,55 @@
+package com.songoda.core.nms;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import org.bukkit.Bukkit;
+
+public class NmsManager {
+
+    private final static String serverPackagePath = Bukkit.getServer().getClass().getPackage().getName();
+    private final static String serverPackageVersion = serverPackagePath.substring(serverPackagePath.lastIndexOf('.') + 1);
+    private final static CoreNMS nms = _getNMS();
+
+    private static CoreNMS _getNMS() {
+//        try {
+//            return (CoreNMS) Class.forName("com.songoda.core.nms." + serverPackageVersion + ".NMS").newInstance();
+//        } catch (Exception ex) {
+//            Logger.getLogger(NmsManager.class.getName()).log(Level.SEVERE, "Failed to load NMS for this server version", ex);
+//        }
+        // this block was only added to keep minimizeJar happy
+        switch (serverPackageVersion) {
+            case "v1_8_R1":
+                return new com.songoda.core.nms.v1_8_R1.NMS();
+            case "v1_8_R2":
+                return new com.songoda.core.nms.v1_8_R2.NMS();
+            case "v1_8_R3":
+                return new com.songoda.core.nms.v1_8_R3.NMS();
+            case "v1_9_R1":
+                return new com.songoda.core.nms.v1_9_R1.NMS();
+            case "v1_9_R2":
+                return new com.songoda.core.nms.v1_9_R2.NMS();
+            case "v1_10_R1":
+                return new com.songoda.core.nms.v1_10_R1.NMS();
+            case "v1_11_R1":
+                return new com.songoda.core.nms.v1_11_R1.NMS();
+            case "v1_12_R1":
+                return new com.songoda.core.nms.v1_12_R1.NMS();
+            case "v1_13_R1":
+                return new com.songoda.core.nms.v1_13_R1.NMS();
+            case "v1_13_R2":
+                return new com.songoda.core.nms.v1_13_R2.NMS();
+            case "v1_14_R1":
+                return new com.songoda.core.nms.v1_14_R1.NMS();
+        }
+        Logger.getLogger(NmsManager.class.getName()).log(Level.SEVERE, "Failed to load NMS for this server version: version {0} not found", serverPackageVersion);
+        return null;
+    }
+
+    public static CoreNMS getNMS() {
+        return nms;
+    }
+
+    public static boolean hasNMS() {
+        return nms != null;
+    }
+}

NMS/NMS-API/pom.xml

@@ -0,0 +1,22 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0">
+
+    <parent>
+        <groupId>com.songoda</groupId>
+        <artifactId>SongodaCore-Modules</artifactId>
+        <version>maven-version-number</version>
+        <relativePath>../../</relativePath>
+    </parent>
+
+    <artifactId>SongodaCore-NMS-API</artifactId>
+
+    <modelVersion>4.0.0</modelVersion>
+    <packaging>jar</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains</groupId>
+            <artifactId>annotations</artifactId>
+            <version>13.0</version>
+        </dependency>
+    </dependencies>
+</project>