Initial Pass at Minecraft 1.12 support

src/com/massivecraft/massivecore/MassiveCore.java

@@ -35,6 +35,7 @@ import com.massivecraft.massivecore.item.WriterItemStack;
 import com.massivecraft.massivecore.mixin.MixinEvent;
 import com.massivecraft.massivecore.mson.Mson;
 import com.massivecraft.massivecore.mson.MsonEvent;
+import com.massivecraft.massivecore.nms.NmsBasics;
 import com.massivecraft.massivecore.nms.NmsItemStackCreate17R4P;
 import com.massivecraft.massivecore.ps.PS;
 import com.massivecraft.massivecore.ps.PSAdapter;
@@ -262,6 +263,17 @@ public class MassiveCore extends MassivePlugin
 		return ret;
 	}
 	
+	@Override
+	public List<Class<?>> getClassesActiveNms()
+	{
+		List<Class<?>> ret = super.getClassesActiveNms();
+		
+		ret.remove(NmsBasics.class);
+		ret.add(0, NmsBasics.class);
+		
+		return ret;
+	}
+	
 	@Override
 	public List<Class<?>> getClassesActiveMixins()
 	{

src/com/massivecraft/massivecore/nms/NmsChat.java

@@ -14,6 +14,7 @@ public class NmsChat extends Mixin
 	// -------------------------------------------- //
 	
 	private static NmsChat d = new NmsChat().setAlternatives(
+		NmsChat112R1P.class,
 		NmsChat18R2P.class,
 		NmsChat18R1.class,
 		NmsChatFallback.class

src/com/massivecraft/massivecore/nms/NmsChat112R1P.java

@@ -0,0 +1,54 @@
+package com.massivecraft.massivecore.nms;
+
+import com.massivecraft.massivecore.particleeffect.ReflectionUtils.PackageType;
+import com.massivecraft.massivecore.util.IdUtil;
+import com.massivecraft.massivecore.util.ReflectionUtil;
+import org.bukkit.entity.Player;
+
+public class NmsChat112R1P extends NmsChatAbstract
+{
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	private static NmsChat112R1P i = new NmsChat112R1P();
+	public static NmsChat112R1P get() { return i; }
+	
+	// -------------------------------------------- //
+	// FIELDS
+	// -------------------------------------------- //
+	
+	protected Class<?> classChatMessageType;
+	protected Object instanceChatMessageTypeGameInfo;
+	
+	// -------------------------------------------- //
+	// SETUP
+	// -------------------------------------------- //
+	
+	@Override
+	public void setup() throws Throwable
+	{
+		this.classChatSerializer = PackageType.MINECRAFT_SERVER.getClass("IChatBaseComponent$ChatSerializer");
+		this.methodChatSerializer = ReflectionUtil.getMethod(this.classChatSerializer, "a", String.class);
+		this.classEnumTitleAction = PackageType.MINECRAFT_SERVER.getClass("PacketPlayOutTitle$EnumTitleAction");
+		
+		setupCommon();
+		
+		this.classChatMessageType = PackageType.MINECRAFT_SERVER.getClass("ChatMessageType");
+		this.instanceChatMessageTypeGameInfo = this.classChatMessageType.getEnumConstants()[2];
+		// CHAT(0),
+		// SYSTEM(1),
+		// GAME_INFO(2);
+		this.constructorPacketPlayOutChatType = ReflectionUtil.getConstructor(this.classPacketPlayOutChat, this.classIChatBaseComponent, this.classChatMessageType);
+	}
+	
+	// -------------------------------------------- //
+	// ACTIONBAR
+	// -------------------------------------------- //
+	
+	@Override
+	public <T> T constructActionBarPacket(Object component) {
+		return ReflectionUtil.invokeConstructor(this.constructorPacketPlayOutChatType, component, this.instanceChatMessageTypeGameInfo);
+	}
+	
+}

src/com/massivecraft/massivecore/nms/NmsChat18R1.java

@@ -13,16 +13,19 @@ public class NmsChat18R1 extends NmsChatAbstract
 	public static NmsChat18R1 get() { return i; }
 	
 	// -------------------------------------------- //
-	// SETUP SPECIFIC
+	// SETUP
 	// -------------------------------------------- //
 	
 	@Override
-	public void setupSpecific() throws Throwable
+	public void setup() throws Throwable
 	{
 		this.classChatSerializer = PackageType.MINECRAFT_SERVER.getClass("ChatSerializer");
 		this.methodChatSerializer = ReflectionUtil.getMethod(this.classChatSerializer, "a", String.class);
-		
 		this.classEnumTitleAction = PackageType.MINECRAFT_SERVER.getClass("EnumTitleAction");
+		
+		setupCommon();
+		
+		this.constructorPacketPlayOutChatType = ReflectionUtil.getConstructor(this.classPacketPlayOutChat, this.classIChatBaseComponent, Byte.TYPE);
 	}
 	
 }

src/com/massivecraft/massivecore/nms/NmsChat18R2P.java

@@ -13,16 +13,18 @@ public class NmsChat18R2P extends NmsChatAbstract
 	public static NmsChat18R2P get() { return i; }
 	
 	// -------------------------------------------- //
-	// SETUP SPECIFIC
+	// SETUP
 	// -------------------------------------------- //
 	
 	@Override
-	public void setupSpecific() throws Throwable
+	public void setup() throws Throwable
 	{
 		this.classChatSerializer = PackageType.MINECRAFT_SERVER.getClass("IChatBaseComponent$ChatSerializer");
 		this.methodChatSerializer = ReflectionUtil.getMethod(this.classChatSerializer, "a", String.class);
-		
 		this.classEnumTitleAction = PackageType.MINECRAFT_SERVER.getClass("PacketPlayOutTitle$EnumTitleAction");
-	}
 		
+		setupCommon();
+		
+		this.constructorPacketPlayOutChatType = ReflectionUtil.getConstructor(this.classPacketPlayOutChat, this.classIChatBaseComponent, Byte.TYPE);
+	}
 }

src/com/massivecraft/massivecore/nms/NmsChatAbstract.java

@@ -61,8 +61,14 @@ public abstract class NmsChatAbstract extends NmsChat
 	@Override
 	public void setup() throws Throwable
 	{
-		this.setupSpecific();
+		throw notImplemented();
+	}
 	
+	// -------------------------------------------- //
+	// SETUP COMMON
+	// -------------------------------------------- //
+	
+	protected void setupCommon() throws Throwable {
 		for (Object object : this.classEnumTitleAction.getEnumConstants())
 		{
 			Enum<?> e = (Enum<?>) object;
@@ -82,15 +88,8 @@ public abstract class NmsChatAbstract extends NmsChat
 		// Get Chat packet and it's constructor
 		this.classPacketPlayOutChat = PackageType.MINECRAFT_SERVER.getClass("PacketPlayOutChat");
 		this.constructorPacketPlayOutChat = ReflectionUtil.getConstructor(this.classPacketPlayOutChat, this.classIChatBaseComponent);
-		this.constructorPacketPlayOutChatType = ReflectionUtil.getConstructor(this.classPacketPlayOutChat, this.classIChatBaseComponent, Byte.TYPE);
 	}
 	
-	// -------------------------------------------- //
-	// SETUP SPECIFIC
-	// -------------------------------------------- //
-	
-	public abstract void setupSpecific() throws Throwable;
-	
 	// -------------------------------------------- //
 	// TO COMPONENT
 	// -------------------------------------------- //
@@ -173,8 +172,12 @@ public abstract class NmsChatAbstract extends NmsChat
 		if (player == null) return;
 		
 		Object component = toComponent(raw);
-		Object packet = ReflectionUtil.invokeConstructor(this.constructorPacketPlayOutChatType, component, (byte)2);
+		Object packet = this.constructActionBarPacket(component);
 		NmsBasics.get().sendPacket(player, packet);
 	}
 	
+	public <T> T constructActionBarPacket(Object component) {
+		return ReflectionUtil.invokeConstructor(this.constructorPacketPlayOutChatType, component, (byte)2);
+	}
+	
 }

src/com/massivecraft/massivecore/sender/BasicCommandSender.java

@@ -7,7 +7,7 @@ import org.bukkit.Server;
 import org.bukkit.command.CommandSender;
 import org.bukkit.permissions.PermissibleBase;
 
-public class BasicCommandSender extends PermissibleBase implements CommandSender
+public abstract class BasicCommandSender extends PermissibleBase implements CommandSender
 {
 	public final String name;
 	
@@ -39,12 +39,6 @@ public class BasicCommandSender extends PermissibleBase implements CommandSender
 		return Bukkit.getServer();
 	}
 
-	@Override
-	public void sendMessage(String message)
-	{
-		// Nothing per default
-	}
-
 	@Override
 	public void sendMessage(String[] messages)
 	{

src/com/massivecraft/massivecore/util/RecipeUtil.java

@@ -1,16 +1,51 @@
 package com.massivecraft.massivecore.util;
 
+import com.massivecraft.massivecore.collections.MassiveList;
+import com.massivecraft.massivecore.predicate.Predicate;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.Recipe;
 import org.bukkit.inventory.ShapelessRecipe;
 import org.bukkit.inventory.meta.PotionMeta;
 import org.bukkit.potion.PotionData;
 import org.bukkit.potion.PotionType;
 
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Objects;
+
 // NOTE: This utility targets 1.9 and will crash on older servers.
 public class RecipeUtil
 {
+	// ------------------------------------------- //
+	// REMOVE
+	// -------------------------------------------- //
+	
+	public static void remove(Predicate<Recipe> removePredicate)
+	{
+		Objects.requireNonNull(removePredicate);
+		
+		List<Recipe> recipesToRemove = new MassiveList<>();
+		List<Recipe> recipesToKeep = new MassiveList<>();
+		
+		Iterator<Recipe> iterator = Bukkit.recipeIterator();
+		while (iterator.hasNext())
+		{
+			Recipe recipe = iterator.next();
+			List<Recipe> recipes = removePredicate.apply(recipe) ? recipesToRemove : recipesToKeep;
+			recipes.add(recipe);
+		}
+		
+		if (recipesToRemove.isEmpty()) return;
+		
+		Bukkit.clearRecipes();
+		for (Recipe recipe : recipesToKeep) {
+			Bukkit.addRecipe(recipe);
+		}
+	}
+	
 	// ------------------------------------------- //
 	// POTION
 	// -------------------------------------------- //