Implement the PlayerEvent.Clone event (#88)

Implement the PlayerEvent.Clone event

Author: ZNixian

patchwork-events-entity/build.gradle

@@ -1,5 +1,5 @@
 archivesBaseName = "patchwork-events-entity"
-version = getSubprojectVersion(project, "0.2.0")
+version = getSubprojectVersion(project, "0.3.0")
 
 dependencies {
 	compile project(path: ':patchwork-fml', configuration: 'dev')

patchwork-events-entity/src/main/java/net/minecraftforge/event/entity/player/PlayerEvent.java

@@ -99,11 +99,42 @@ public Entity getTarget() {
 		}
 	}
 
+	/*
+	 * Fired when the EntityPlayer is cloned, typically caused by the network sending a RESPAWN_PLAYER event.
+	 * Either caused by death, or by traveling from the End to the overworld.
+	 */
+	public static class Clone extends PlayerEvent {
+		private final PlayerEntity original;
+		private final boolean wasDeath;
+
+		public Clone(PlayerEntity newPlayer, PlayerEntity oldPlayer, boolean wasDeath) {
+			super(newPlayer);
+			this.original = oldPlayer;
+			this.wasDeath = wasDeath;
+		}
+
+		/**
+		 * @return The old EntityPlayer that this new entity is a clone of.
+		 */
+		public PlayerEntity getOriginal() {
+			return original;
+		}
+
+		/**
+		 * True if this event was fired because the player died.
+		 * False if it was fired because the entity switched dimensions.
+		 *
+		 * @return Whether this event was caused by the player dying.
+		 */
+		public boolean isWasDeath() {
+			return wasDeath;
+		}
+	}
+
 	/*TODO Events:
 	HarvestCheck
 	BreakSpeed
 	NameFormat
-	Clone
 	LoadFromFile
 	SaveToFile
 	Visibility

patchwork-events-entity/src/main/java/net/patchworkmc/mixin/event/entity/MixinServerPlayerEntity.java

@@ -19,6 +19,8 @@
 
 package net.patchworkmc.mixin.event.entity;
 
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.event.entity.player.PlayerEvent;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
@@ -40,4 +42,11 @@ private void hookDeath(DamageSource source, CallbackInfo callback) {
 			callback.cancel();
 		}
 	}
+
+	@Inject(method = "copyFrom", at = @At("TAIL"))
+	private void hookCopyFromForCloneEvent(ServerPlayerEntity oldPlayer, boolean alive, CallbackInfo info) {
+		@SuppressWarnings("ConstantConditions")
+		ServerPlayerEntity speThis = (ServerPlayerEntity) (Object) this;
+		MinecraftForge.EVENT_BUS.post(new PlayerEvent.Clone(speThis, oldPlayer, !alive));
+	}
 }