Removed dependency on craftbukkit by using reflection. (Took a while to learn and sort out :P but should be useful for the future anyway so its time well spent :D)

pom.xml

@@ -29,12 +29,13 @@
         <version>1.10.2-R0.1-SNAPSHOT</version>
         <scope>provided</scope>
     </dependency>
-    <dependency>
     <!-- spigot's buildtools automatically places it in maven's repository after building it -->
+    <!-- used for net.minecraft.server code -->
+    <!--<dependency>
 		<groupId>org.bukkit</groupId>
 		<artifactId>craftbukkit</artifactId>
 		<version>1.10.2-R0.1-SNAPSHOT</version>
 		<scope>provided</scope>
-	</dependency>
+	</dependency>-->
   </dependencies>
 </project>

src/com/sekwah/advancedportals/AdvancedPortalsPlugin.java

@@ -30,7 +30,7 @@ public class AdvancedPortalsPlugin extends JavaPlugin {
 
         try {
 
-            this.compat = new CraftBukkit(version);
+            this.compat = new CraftBukkit(this, version);
 
             ConfigAccessor portalConfig = new ConfigAccessor(this, "portals.yml");
             portalConfig.saveDefaultConfig();
@@ -79,7 +79,7 @@ public class AdvancedPortalsPlugin extends JavaPlugin {
             this.getLogger().warning("This version of craftbukkit is not yet supported, please notify sekwah and tell him about this version v:" + version);
             this.setEnabled(false);
         } catch (IllegalArgumentException |
-                NoSuchFieldException | SecurityException e) {
+                NoSuchFieldException | SecurityException | NoSuchMethodException e) {
             e.printStackTrace();
             this.getLogger().warning("Something went wrong, please notify sekwah and tell him about this version v:" + version);
             this.getLogger().warning("Along with the above stacktrace");

src/com/sekwah/advancedportals/compat/CraftBukkit.java

@@ -1,8 +1,12 @@
 package com.sekwah.advancedportals.compat;
 
+import com.sekwah.advancedportals.AdvancedPortalsPlugin;
 import org.bukkit.entity.Player;
 
+import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
 
 /**
  * Created by on 02/08/2016.
@@ -14,41 +18,77 @@ import java.lang.reflect.Field;
  */
 public class CraftBukkit {
 
-    private final String craftBukkitVer;
-
     private final String craftBukkitPackage;
 
     private final String minecraftPackage;
 
+    private final AdvancedPortalsPlugin plugin;
+
+    private Method chatMessageMethod;
+
+    private Class<?> craftPlayer;
+
+    private Class<?> chatPacket;
+
+    private Class<?> chatBaseComponent;
+
+    private Class<?> packet;
+
 
     // Classes so it doesnt keep fetching them.
-    private Class<?> chatBaseComponent;
-    private Class<?> chatSerializer;
 
-    public CraftBukkit(String craftBukkitVer) throws ClassNotFoundException, NoSuchFieldException {
-        this.craftBukkitVer = craftBukkitVer;
-        this.craftBukkitPackage = "org.bukkit.craftbukkit." + craftBukkitVer;
-        this.minecraftPackage = "net.minecraft.server." + craftBukkitVer;
+    public CraftBukkit(AdvancedPortalsPlugin plugin, String craftBukkitVer) throws ClassNotFoundException, NoSuchFieldException, NoSuchMethodException {
 
+        this.craftBukkitPackage = "org.bukkit.craftbukkit." + craftBukkitVer + ".";
+
+        this.minecraftPackage = "net.minecraft.server." + craftBukkitVer + ".";
+
+        this.plugin = plugin;
 
         this.setupCompat();
     }
 
-    private void setupCompat() throws ClassNotFoundException, NoSuchFieldException {
+    private void setupCompat() throws ClassNotFoundException, NoSuchFieldException, NoSuchMethodException {
+
+        this.craftPlayer = Class.forName(craftBukkitPackage + "entity.CraftPlayer");
+
         this.chatBaseComponent = Class.forName(minecraftPackage + "IChatBaseComponent");
-        Field modfield = chatBaseComponent.getDeclaredField("modifiers");
-        chatBaseComponent.getDeclaredClasses();
+
+        this.chatMessageMethod = this.findClass(chatBaseComponent, "ChatSerializer").getMethod("a", String.class);
+
+        this.chatPacket = Class.forName(minecraftPackage + "PacketPlayOutChat");
+
+        this.packet = Class.forName(minecraftPackage + "Packet");
 
     }
 
-    // Convert to reflection
     public void sendRawMessage(String rawMessage, Player player) {
+        this.sendMessage(rawMessage,player, (byte) 1);
+    }
 
+    public void sendActionBarMessage(String rawMessage, Player player) {
+        this.sendMessage(rawMessage,player, (byte) 2);
+    }
+
+    public void sendMessage(String rawMessage, Player player, byte msgType) {
         try {
+            Object comp = this.chatMessageMethod.invoke(null,rawMessage);
 
-            Class<?> nmsClass = Class.forName(minecraftPackage + "IChatBaseComponent");
+            Object handle = this.craftPlayer.getMethod("getHandle").invoke(player);
 
-        } catch (ClassNotFoundException e) {
+            Field playerConnectionObj = handle.getClass().getDeclaredField("playerConnection");
+
+            Constructor<?> packetConstructor = this.chatPacket.getConstructor(this.chatBaseComponent, byte.class);
+
+            Object packet = packetConstructor.newInstance(comp, msgType);
+
+            Object playerConnection = playerConnectionObj.get(handle);
+
+            playerConnection.getClass().getMethod("sendPacket", this.packet).invoke(playerConnection, packet);
+
+        } catch (IllegalAccessException |InvocationTargetException | NoSuchMethodException | NoSuchFieldException
+                | InstantiationException e) {
+            this.plugin.getLogger().warning("Error creating raw message, something must be wrong with reflection");
             e.printStackTrace();
         }
 
@@ -58,11 +98,14 @@ public class CraftBukkit {
         ((CraftPlayer) player).getHandle().playerConnection.sendPacket(packet);*/
     }
 
-    public void sendActionBarMessage(String rawMessage, Player player) {
-        /*IChatBaseComponent comp = IChatBaseComponent.ChatSerializer.a(rawMessage);
-        // "json message", position(0: chat (chat box), 1: system message (chat box), 2: above action bar)
-        PacketPlayOutChat packet = new PacketPlayOutChat(comp, (byte) 2);
-        ((CraftPlayer) player).getHandle().playerConnection.sendPacket(packet);*/
+
+    public Class<?> findClass(Class<?> classObj, String className){
+        for(Class<?> classes : classObj.getDeclaredClasses()){
+            if(classes.getSimpleName().equals(className)){
+                return classes;
+            }
+        }
+        return null;
     }