Add an event for registering block/item colour handlers (#4565)

src/main/java/net/minecraftforge/client/ForgeHooksClient.java

@@ -61,6 +61,8 @@ import net.minecraft.client.renderer.block.model.ModelManager;
 import net.minecraft.client.renderer.block.model.ModelResourceLocation;
 import net.minecraft.client.renderer.block.model.ModelRotation;
 import net.minecraft.client.renderer.block.model.SimpleBakedModel;
+import net.minecraft.client.renderer.color.BlockColors;
+import net.minecraft.client.renderer.color.ItemColors;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.client.renderer.texture.TextureManager;
 import net.minecraft.client.renderer.texture.TextureMap;
@@ -91,6 +93,7 @@ import net.minecraft.util.text.TextFormatting;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
 import net.minecraft.world.biome.Biome;
+import net.minecraftforge.client.event.ColorHandlerEvent;
 import net.minecraftforge.client.event.DrawBlockHighlightEvent;
 import net.minecraftforge.client.event.EntityViewRenderEvent;
 import net.minecraftforge.client.event.FOVUpdateEvent;
@@ -185,6 +188,16 @@ public class ForgeHooksClient
         MinecraftForge.EVENT_BUS.post(new TextureStitchEvent.Post(map));
     }
 
+    public static void onBlockColorsInit(BlockColors blockColors)
+    {
+        MinecraftForge.EVENT_BUS.post(new ColorHandlerEvent.Block(blockColors));
+    }
+
+    public static void onItemColorsInit(ItemColors itemColors, BlockColors blockColors)
+    {
+        MinecraftForge.EVENT_BUS.post(new ColorHandlerEvent.Item(itemColors, blockColors));
+    }
+
     static int renderPass = -1;
     public static void setRenderPass(int pass)
     {

src/main/java/net/minecraftforge/client/event/ColorHandlerEvent.java

@@ -0,0 +1,68 @@
+/*
+ * Minecraft Forge
+ * Copyright (c) 2017.
+ *
+ * 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.client.event;
+
+import net.minecraft.client.renderer.color.BlockColors;
+import net.minecraft.client.renderer.color.ItemColors;
+import net.minecraftforge.fml.common.eventhandler.Event;
+
+/**
+ * Use these events to register block/item
+ * color handlers at the appropriate time.
+ */
+public abstract class ColorHandlerEvent extends Event
+{
+    public static class Block extends ColorHandlerEvent
+    {
+        private final BlockColors blockColors;
+
+        public Block(BlockColors blockColors)
+        {
+            this.blockColors = blockColors;
+        }
+
+        public BlockColors getBlockColors()
+        {
+            return blockColors;
+        }
+    }
+
+    public static class Item extends ColorHandlerEvent
+    {
+        private final ItemColors itemColors;
+        private final BlockColors blockColors;
+
+        public Item(ItemColors itemColors, BlockColors blockColors)
+        {
+            this.itemColors = itemColors;
+            this.blockColors = blockColors;
+        }
+
+        public ItemColors getItemColors()
+        {
+            return itemColors;
+        }
+
+        public BlockColors getBlockColors()
+        {
+            return blockColors;
+        }
+    }
+}