Restore the ability to register modded TileEntities.

patches/minecraft/net/minecraft/tileentity/TileEntity.java.patch

@@ -1,6 +1,6 @@
 --- ../src-base/minecraft/net/minecraft/tileentity/TileEntity.java
 +++ ../src-work/minecraft/net/minecraft/tileentity/TileEntity.java
-@@ -21,7 +21,7 @@
+@@ -21,10 +21,10 @@
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
@@ -8,7 +8,11 @@
 +public abstract class TileEntity implements net.minecraftforge.common.capabilities.ICapabilitySerializable<NBTTagCompound>
  {
      private static final Logger field_145852_a = LogManager.getLogger();
-     private static final RegistryNamespaced < ResourceLocation, Class <? extends TileEntity >> field_190562_f = new RegistryNamespaced();
+-    private static final RegistryNamespaced < ResourceLocation, Class <? extends TileEntity >> field_190562_f = new RegistryNamespaced();
++    private static final RegistryNamespaced < ResourceLocation, Class <? extends TileEntity >> field_190562_f = net.minecraftforge.fml.common.registry.GameData.getTileEntityRegistry();
+     protected World field_145850_b;
+     protected BlockPos field_174879_c = BlockPos.field_177992_a;
+     protected boolean field_145846_f;
 @@ -60,6 +60,8 @@
      public void func_145839_a(NBTTagCompound p_145839_1_)
      {

src/main/java/net/minecraftforge/fml/common/registry/GameData.java

@@ -31,6 +31,7 @@ import net.minecraft.item.Item;
 import net.minecraft.item.ItemBlock;
 import net.minecraft.potion.Potion;
 import net.minecraft.potion.PotionType;
+import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.ObjectIntIdentityMap;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.SoundEvent;
@@ -87,6 +88,8 @@ public class GameData
             FMLLog.log(Level.FATAL, e, "Cannot access the 'block' field from ItemBlock, this is fatal!");
             throw Throwables.propagate(e);
         }
+
+        iTileEntityRegistry = new LegacyNamespacedRegistry<Class<? extends TileEntity>>();
     }
     // internal registry objects
     private final FMLControlledNamespacedRegistry<Block> iBlockRegistry;
@@ -97,6 +100,11 @@ public class GameData
     private final FMLControlledNamespacedRegistry<PotionType> iPotionTypeRegistry;
     private final FMLControlledNamespacedRegistry<Enchantment> iEnchantmentRegistry;
 
+    //TODO: ? These are never used by ID, so they don't need to be full registries/persisted.
+    //Need cpw to decide how we want to go about this as they are generic registries that
+    //don't follow the same patterns as the other ones.
+    private final LegacyNamespacedRegistry<Class<? extends TileEntity>> iTileEntityRegistry;
+
     /** INTERNAL ONLY */
     @Deprecated
     public static FMLControlledNamespacedRegistry<Block> getBlockRegistry()
@@ -133,6 +141,10 @@ public class GameData
     @Deprecated
     public static FMLControlledNamespacedRegistry<Enchantment> getEnchantmentRegistry() { return getMain().iEnchantmentRegistry; }
 
+    /** INTERNAL ONLY */
+    @Deprecated
+    public static LegacyNamespacedRegistry<Class<? extends TileEntity>> getTileEntityRegistry() { return getMain().iTileEntityRegistry; }
+
     @Deprecated
     static Item findItem(String modId, String name)
     {

src/main/java/net/minecraftforge/fml/common/registry/GameRegistry.java

@@ -257,7 +257,7 @@ public class GameRegistry
 
     public static void registerTileEntity(Class<? extends TileEntity> tileEntityClass, String id)
     {
-//        TileEntity.addMapping(tileEntityClass, id);
+        GameData.getTileEntityRegistry().putObject(new ResourceLocation(id), tileEntityClass);
     }
 
     /**
@@ -270,14 +270,10 @@ public class GameRegistry
      */
     public static void registerTileEntityWithAlternatives(Class<? extends TileEntity> tileEntityClass, String id, String... alternatives)
     {
-//        TileEntity.addMapping(tileEntityClass, id);
+        GameRegistry.registerTileEntity(tileEntityClass, id);
-        Map<String, Class<?>> teMappings = ObfuscationReflectionHelper.getPrivateValue(TileEntity.class, null, "field_" + "145855_i", "nameToClassMap");
         for (String s : alternatives)
         {
-            if (!teMappings.containsKey(s))
+            GameData.getTileEntityRegistry().addLegacyName(new ResourceLocation(s), new ResourceLocation(id));
-            {
-                teMappings.put(s, tileEntityClass);
-            }
         }
     }
 

src/main/java/net/minecraftforge/fml/common/registry/LegacyNamespacedRegistry.java

@@ -0,0 +1,54 @@
+/*
+ * Minecraft Forge
+ * Copyright (c) 2016.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+package net.minecraftforge.fml.common.registry;
+
+import java.util.Map;
+
+import javax.annotation.Nullable;
+
+import com.google.common.collect.Maps;
+
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.registry.RegistryNamespaced;
+
+public class LegacyNamespacedRegistry<V> extends RegistryNamespaced<ResourceLocation, V>
+{
+    private Map<ResourceLocation, ResourceLocation> legacy_names = Maps.newHashMap();
+
+    @Nullable
+    public V getObject(@Nullable ResourceLocation name)
+    {
+        V ret = super.getObject(name);
+
+        if (ret == null)
+        {
+            ResourceLocation new_name = legacy_names.get(name);
+            if (new_name != null)
+                ret = super.getObject(new_name);
+        }
+
+        return ret;
+    }
+
+    public void addLegacyName(ResourceLocation old_name, ResourceLocation new_name)
+    {
+        legacy_names.put(old_name, new_name);
+    }
+}