Add EntityTravelToDimensionEvent

Resolve Merge Conflict

Move event call inside conditional

patches/minecraft/net/minecraft/entity/Entity.java.patch

@@ -131,7 +131,15 @@
      }
  
      public boolean func_70093_af()
-@@ -2092,7 +2146,7 @@
+@@ -2049,6 +2103,7 @@
+     {
+         if (!this.field_70170_p.field_72995_K && !this.field_70128_L)
+         {
++            if (!net.minecraftforge.common.ForgeHooks.onTravelToDimension(this, p_71027_1_)) return;
+             this.field_70170_p.field_72984_F.func_76320_a("changeDimension");
+             MinecraftServer minecraftserver = MinecraftServer.func_71276_C();
+             int i = this.field_71093_bK;
+@@ -2092,7 +2147,7 @@
  
      public float func_180428_a(Explosion p_180428_1_, World p_180428_2_, BlockPos p_180428_3_, IBlockState p_180428_4_)
      {
@@ -140,7 +148,7 @@
      }
  
      public boolean func_174816_a(Explosion p_174816_1_, World p_174816_2_, BlockPos p_174816_3_, IBlockState p_174816_4_, float p_174816_5_)
-@@ -2353,4 +2407,209 @@
+@@ -2353,4 +2408,209 @@
  
          EnchantmentHelper.func_151385_b(p_174815_1_, p_174815_2_);
      }

patches/minecraft/net/minecraft/entity/player/EntityPlayerMP.java.patch

@@ -72,7 +72,15 @@
  
              if (entitylist$entityegginfo != null)
              {
-@@ -831,6 +848,7 @@
+@@ -528,6 +545,7 @@
+ 
+     public void func_71027_c(int p_71027_1_)
+     {
++        if (!net.minecraftforge.common.ForgeHooks.onTravelToDimension(this, p_71027_1_)) return;
+         if (this.field_71093_bK == 1 && p_71027_1_ == 1)
+         {
+             this.func_71029_a(AchievementList.field_76003_C);
+@@ -831,6 +849,7 @@
      {
          if (p_71064_1_ != null)
          {

src/main/java/net/minecraftforge/common/ForgeHooks.java

@@ -26,6 +26,7 @@ import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.item.EntityItem;
+import net.minecraft.entity.item.EntityMinecartContainer;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.event.ClickEvent;
@@ -73,6 +74,7 @@ import net.minecraftforge.common.util.BlockSnapshot;
 import net.minecraftforge.event.AnvilUpdateEvent;
 import net.minecraftforge.event.ForgeEventFactory;
 import net.minecraftforge.event.ServerChatEvent;
+import net.minecraftforge.event.entity.EntityTravelToDimensionEvent;
 import net.minecraftforge.event.entity.item.ItemTossEvent;
 import net.minecraftforge.event.entity.living.LivingAttackEvent;
 import net.minecraftforge.event.entity.living.LivingDeathEvent;
@@ -906,4 +908,19 @@ public class ForgeHooks
         if (stack != null && stack.getItem().onLeftClickEntity(stack, player, target)) return false;
         return true;
     }
-}
+
+    public static boolean onTravelToDimension(Entity entity, int dimension)
+    {
+        EntityTravelToDimensionEvent event = new EntityTravelToDimensionEvent(entity, dimension);
+        MinecraftForge.EVENT_BUS.post(event);
+        if (event.isCanceled())
+        {
+            // Revert variable back to true as it would have been set to false
+            if (entity instanceof EntityMinecartContainer)
+            {
+               ((EntityMinecartContainer) entity).dropContentsWhenDead = true;
+            }
+        }
+        return !event.isCanceled();
+    }
+}

src/main/java/net/minecraftforge/event/entity/EntityTravelToDimensionEvent.java

@@ -0,0 +1,29 @@
+package net.minecraftforge.event.entity;
+
+import net.minecraft.entity.Entity;
+import net.minecraftforge.fml.common.eventhandler.Cancelable;
+import net.minecraftforge.fml.common.eventhandler.Event.HasResult;
+
+/**
+ * EntityTravelToDimensionEvent is fired before an Entity travels to a dimension.<br>
+ * <br>
+ * {@link #dimension} contains the id of the dimension the entity is traveling to.<br>
+ * <br>
+ * This event is {@link Cancelable}.<br>
+ * If this event is canceled, the Entity does not travel to the dimension.<br>
+ * <br>
+ * This event does not have a result. {@link HasResult}<br>
+ * <br>
+ * This event is fired on the {@link MinecraftForge#EVENT_BUS}.<br>
+ **/
+@Cancelable
+public class EntityTravelToDimensionEvent extends EntityEvent
+{
+    public final int dimension;
+
+    public EntityTravelToDimensionEvent(Entity entity, int dimension)
+    {
+        super(entity);
+        this.dimension = dimension;
+    }
+}

src/main/resources/forge_at.cfg

@@ -173,6 +173,8 @@ public net.minecraft.entity.ai.EntityAITasks$EntityAITaskEntry
 ## EntityLiving
 public net.minecraft.entity.EntityLiving field_70714_bg #tasks
 public net.minecraft.entity.EntityLiving field_70715_bh #targetTasks
+## EntityMinecartContainer
+public net.minecraft.entity.item.EntityMinecartContainer field_94112_b #dropContentsWhenDead
 # GuiScreen
 public net.minecraft.client.gui.GuiScreen field_146297_k # minecraft instance - public because gui's outside access it
 # Minecraft

src/test/java/net/minecraftforge/test/EntityTravelToDimensionEventTest.java

@@ -0,0 +1,29 @@
+package net.minecraftforge.test;
+
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.event.entity.EntityTravelToDimensionEvent;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.Mod.EventHandler;
+import net.minecraftforge.fml.common.event.FMLInitializationEvent;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+
+@Mod(modid="EntityTravelToDimensionEventTest", name="EntityTravelToDimensionEventTest", version="0.0.0")
+public class EntityTravelToDimensionEventTest
+{
+    public static final boolean ENABLE = false;
+
+    @EventHandler
+    public void init(FMLInitializationEvent event)
+    {
+        MinecraftForge.EVENT_BUS.register(this);
+    }
+
+    @SubscribeEvent
+    public void onDimensionTravel(EntityTravelToDimensionEvent event)
+    {
+        if(ENABLE) {
+            System.out.println("Travelling to Dimension " + event.dimension);
+            event.setCanceled(true);
+        }
+    }
+}