Allow mods to set other default "home dimensions" for respawning. (#3528)

src/test/java/net/minecraftforge/test/CustomSpawnDimensionTest.java

@@ -0,0 +1,39 @@
+package net.minecraftforge.test;
+
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.math.BlockPos;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.event.entity.EntityJoinWorldEvent;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+
+@Mod(modid = CustomSpawnDimensionTest.MODID, name = "CustomSpawnDimensionTest", version = "0.1")
+public class CustomSpawnDimensionTest
+{
+    public static final String MODID = "customspawndimensiontest";
+
+    private static final boolean ENABLE = false;
+
+    public CustomSpawnDimensionTest()
+    {
+        if (ENABLE)
+        {
+            MinecraftForge.EVENT_BUS.register(this);
+        }
+    }
+
+    @SubscribeEvent
+    public void enterDimension(EntityJoinWorldEvent event)
+    {
+        Entity e = event.getEntity();
+        if (!(e instanceof EntityPlayer))
+            return;
+
+        BlockPos pos = e.getPosition();
+        int dim = e.dimension;
+
+        ((EntityPlayer) e).setSpawnDimension(dim);
+        ((EntityPlayer) e).setSpawnChunk(pos, true, dim);
+    }
+}