add item model overrides

build.gradle

@@ -23,7 +23,7 @@ dependencies {
 }
 
 teavm.js {
-    obfuscated = true
+    obfuscated = false
     sourceMap = true
     targetFileName = "../classes.js"
     optimization = org.teavm.gradle.api.OptimizationLevel.AGGRESSIVE

resources/resources/assets/minecraft/models/item/broken_elytra.json

@@ -0,0 +1,18 @@
+{
+    "parent": "builtin/generated",
+    "textures": {
+        "layer0": "items/broken_elytra"
+    },
+    "display": {
+        "thirdperson": {
+            "rotation": [ -90, 0, 0 ],
+            "translation": [ 0, 1, -3 ],
+            "scale": [ 0.55, 0.55, 0.55 ]
+        },
+        "firstperson": {
+            "rotation": [ 0, -135, 25 ],
+            "translation": [ 0, 4, 2 ],
+            "scale": [ 1.7, 1.7, 1.7 ]
+        }
+    }
+}

resources/resources/assets/minecraft/models/item/elytra.json

@@ -14,5 +14,13 @@
             "translation": [ 0, 4, 2 ],
             "scale": [ 1.7, 1.7, 1.7 ]
         }
+    },
+    "overrides": [
+        {
+            "predicate": {
+                "broken": 1
+            },
+            "model": "item/broken_elytra"
         }
+    ]
 }

src/main/java/net/lax1dude/eaglercraft/v1_8/json/JSONTypeProvider.java

@@ -19,6 +19,7 @@ import net.minecraft.client.renderer.block.model.BlockFaceUV;
 import net.minecraft.client.renderer.block.model.BlockPart;
 import net.minecraft.client.renderer.block.model.BlockPartFace;
 import net.minecraft.client.renderer.block.model.ItemCameraTransforms;
+import net.minecraft.client.renderer.block.model.ItemOverride;
 import net.minecraft.client.renderer.block.model.ItemTransformVec3f;
 import net.minecraft.client.renderer.block.model.ModelBlock;
 import net.minecraft.client.renderer.block.model.ModelBlockDefinition;
@@ -40,14 +41,21 @@ import net.minecraft.world.gen.ChunkProviderSettings;
 /**
  * Copyright (c) 2022 lax1dude. All Rights Reserved.
  * 
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * DISCLAIMED.
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * DIRECT,
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  * 
@@ -118,7 +126,8 @@ public class JSONTypeProvider {
 			valid = true;
 		}
 		if (!valid) {
-			throw new IllegalArgumentException("Object " + obj.getClass().getSimpleName() + " is not a JsonSerializer or JsonDeserializer object");
+			throw new IllegalArgumentException(
+					"Object " + obj.getClass().getSimpleName() + " is not a JsonSerializer or JsonDeserializer object");
 		}
 	}
 
@@ -143,6 +152,8 @@ public class JSONTypeProvider {
 		registerType(ItemCameraTransforms.class, new ItemCameraTransforms.Deserializer());
 		registerType(ModelBlockDefinition.class, new ModelBlockDefinition.Deserializer());
 		registerType(ModelBlockDefinition.Variant.class, new ModelBlockDefinition.Variant.Deserializer());
+		registerType(ItemOverride.class, new ItemOverride.Deserializer());
+
 		registerType(SoundList.class, new SoundListSerializer());
 		registerType(SoundMap.class, new SoundMapDeserializer());
 		registerType(TextureMetadataSection.class, new TextureMetadataSectionSerializer());

src/main/java/net/minecraft/client/renderer/block/model/ItemModelGenerator.java

@@ -68,7 +68,8 @@ public class ItemModelGenerator {
 		} else {
 			hashmap.put("particle", blockModel.isTexturePresent("particle") ? blockModel.resolveTextureName("particle")
 					: (String) hashmap.get("layer0"));
-			return new ModelBlock(arraylist, hashmap, false, false, blockModel.func_181682_g());
+			return new ModelBlock((ResourceLocation) null, arraylist, hashmap, false, false,
+					blockModel.func_181682_g(), blockModel.getOverrides());
 		}
 	}
 

src/main/java/net/minecraft/client/renderer/block/model/ItemOverride.java

@@ -0,0 +1,70 @@
+package net.minecraft.client.renderer.block.model;
+
+import com.google.common.collect.Maps;
+import java.util.Map;
+import java.util.Map.Entry;
+import javax.annotation.Nullable;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import net.lax1dude.eaglercraft.v1_8.json.JSONTypeDeserializer;
+import net.lax1dude.eaglercraft.v1_8.json.JSONTypeProvider;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.item.IItemPropertyGetter;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.world.World;
+
+public class ItemOverride {
+    private final ResourceLocation location;
+    private final Map<ResourceLocation, Float> mapResourceValues;
+
+    public ItemOverride(ResourceLocation locationIn, Map<ResourceLocation, Float> p_i46571_2_) {
+        this.location = locationIn;
+        this.mapResourceValues = p_i46571_2_;
+    }
+
+    public ResourceLocation getLocation() {
+        return this.location;
+    }
+
+    boolean matchesItemStack(ItemStack stack, @Nullable World worldIn, @Nullable EntityLivingBase livingEntity) {
+        Item item = stack.getItem();
+
+        for (Entry<ResourceLocation, Float> entry : this.mapResourceValues.entrySet()) {
+            IItemPropertyGetter iitempropertygetter = item.getPropertyGetter((ResourceLocation) entry.getKey());
+
+            if (iitempropertygetter == null || iitempropertygetter.apply(stack, worldIn,
+                    livingEntity) < ((Float) entry.getValue()).floatValue()) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    public static ItemOverride deserialize(String json) {
+        return (ItemOverride) JSONTypeProvider.deserialize(new JSONObject(json), ItemOverride.class);
+    }
+
+    public static class Deserializer implements JSONTypeDeserializer<JSONObject, ItemOverride> {
+        public ItemOverride deserialize(JSONObject jsonObject) throws JSONException {
+            ResourceLocation resourcelocation = new ResourceLocation(jsonObject.getString("model"));
+            Map<ResourceLocation, Float> map = this.makeMapResourceValues(jsonObject);
+            return new ItemOverride(resourcelocation, map);
+        }
+
+        protected Map<ResourceLocation, Float> makeMapResourceValues(JSONObject jsonObject) {
+            Map<ResourceLocation, Float> map = Maps.<ResourceLocation, Float>newLinkedHashMap();
+            JSONObject jsonPredicate = jsonObject.getJSONObject("predicate");
+
+            for (String key : jsonPredicate.keySet()) {
+                map.put(new ResourceLocation(key), Float.valueOf(jsonPredicate.getFloat(key)));
+            }
+
+            return map;
+        }
+    }
+}

src/main/java/net/minecraft/client/renderer/block/model/ItemOverrideList.java

@@ -0,0 +1,37 @@
+package net.minecraft.client.renderer.block.model;
+
+import com.google.common.collect.Lists;
+import java.util.List;
+import javax.annotation.Nullable;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.world.World;
+
+public class ItemOverrideList {
+    public static final ItemOverrideList NONE = new ItemOverrideList();
+    private final List<ItemOverride> overrides = Lists.<ItemOverride>newArrayList();
+
+    private ItemOverrideList() {
+    }
+
+    public ItemOverrideList(List<ItemOverride> overridesIn) {
+        for (int i = overridesIn.size() - 1; i >= 0; --i) {
+            this.overrides.add(overridesIn.get(i));
+        }
+    }
+
+    @Nullable
+    public ResourceLocation applyOverride(ItemStack stack, @Nullable World worldIn,
+            @Nullable EntityLivingBase entityIn) {
+        if (!this.overrides.isEmpty()) {
+            for (ItemOverride itemoverride : this.overrides) {
+                if (itemoverride.matchesItemStack(stack, worldIn, entityIn)) {
+                    return itemoverride.getLocation();
+                }
+            }
+        }
+
+        return null;
+    }
+}

src/main/java/net/minecraft/client/renderer/block/model/ModelBlock.java

@@ -1,16 +1,21 @@
 package net.minecraft.client.renderer.block.model;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
+
 import org.apache.commons.lang3.StringUtils;
+import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
 
 import net.lax1dude.eaglercraft.v1_8.json.JSONTypeDeserializer;
 import net.lax1dude.eaglercraft.v1_8.json.JSONTypeProvider;
@@ -54,6 +59,7 @@ public class ModelBlock {
 	private final boolean gui3d;
 	private final boolean ambientOcclusion;
 	private ItemCameraTransforms cameraTransforms;
+	private final List<ItemOverride> overrides;
 	public String name;
 	protected final Map<String, String> textures;
 	protected ModelBlock parent;
@@ -63,18 +69,23 @@ public class ModelBlock {
 		return (ModelBlock) JSONTypeProvider.deserialize(new JSONObject(parString1), ModelBlock.class);
 	}
 
-	protected ModelBlock(List<BlockPart> parList, Map<String, String> parMap, boolean parFlag, boolean parFlag2,
+	// protected ModelBlock(List<BlockPart> parList, Map<String, String> parMap,
-			ItemCameraTransforms parItemCameraTransforms) {
+	// boolean parFlag, boolean parFlag2,
-		this((ResourceLocation) null, parList, parMap, parFlag, parFlag2, parItemCameraTransforms);
+	// ItemCameraTransforms parItemCameraTransforms) {
-	}
+	// this((ResourceLocation) null, parList, parMap, parFlag, parFlag2,
+	// parItemCameraTransforms);
+	// }
 
-	protected ModelBlock(ResourceLocation parResourceLocation, Map<String, String> parMap, boolean parFlag,
+	// protected ModelBlock(ResourceLocation parResourceLocation, Map<String,
-			boolean parFlag2, ItemCameraTransforms parItemCameraTransforms) {
+	// String> parMap, boolean parFlag,
-		this(parResourceLocation, Collections.emptyList(), parMap, parFlag, parFlag2, parItemCameraTransforms);
+	// boolean parFlag2, ItemCameraTransforms parItemCameraTransforms) {
-	}
+	// this(parResourceLocation, Collections.emptyList(), parMap, parFlag, parFlag2,
+	// parItemCameraTransforms);
+	// }
 
-	private ModelBlock(ResourceLocation parentLocationIn, List<BlockPart> elementsIn, Map<String, String> texturesIn,
+	public ModelBlock(ResourceLocation parentLocationIn, List<BlockPart> elementsIn, Map<String, String> texturesIn,
-			boolean ambientOcclusionIn, boolean gui3dIn, ItemCameraTransforms cameraTransformsIn) {
+			boolean ambientOcclusionIn, boolean gui3dIn, ItemCameraTransforms cameraTransformsIn,
+			List<ItemOverride> overridesIn) {
 		this.name = "";
 		this.elements = elementsIn;
 		this.ambientOcclusion = ambientOcclusionIn;
@@ -82,6 +93,7 @@ public class ModelBlock {
 		this.textures = texturesIn;
 		this.parentLocation = parentLocationIn;
 		this.cameraTransforms = cameraTransformsIn;
+		this.overrides = overridesIn;
 	}
 
 	public List<BlockPart> getElements() {
@@ -111,6 +123,24 @@ public class ModelBlock {
 
 	}
 
+	public Collection<ResourceLocation> getOverrideLocations() {
+		Set<ResourceLocation> set = Sets.<ResourceLocation>newHashSet();
+
+		for (ItemOverride itemoverride : this.overrides) {
+			set.add(itemoverride.getLocation());
+		}
+
+		return set;
+	}
+
+	protected List<ItemOverride> getOverrides() {
+		return this.overrides;
+	}
+
+	public ItemOverrideList createOverrides() {
+		return this.overrides.isEmpty() ? ItemOverrideList.NONE : new ItemOverrideList(this.overrides);
+	}
+
 	public boolean isTexturePresent(String textureName) {
 		return !"missingno".equals(this.resolveTextureName(textureName));
 	}
@@ -221,12 +251,30 @@ public class ModelBlock {
 					JSONObject jsonobject1 = jsonobject.getJSONObject("display");
 					itemcameratransforms = JSONTypeProvider.deserialize(jsonobject1, ItemCameraTransforms.class);
 				}
+				List<ItemOverride> list1 = this.getItemOverrides(jsonobject);
 
-				return flag1 ? new ModelBlock(new ResourceLocation(s), map, flag2, true, itemcameratransforms)
+				ResourceLocation resourcelocation = s.isEmpty() ? null : new ResourceLocation(s);
-						: new ModelBlock(list, map, flag2, true, itemcameratransforms);
+				return new ModelBlock(resourcelocation, list, map, flag2, true, itemcameratransforms, list1);
 			}
 		}
 
+		protected List<ItemOverride> getItemOverrides(JSONObject object) {
+			List<ItemOverride> list = new ArrayList<>();
+
+			if (object.has("overrides")) {
+				JSONArray overrides = object.getJSONArray("overrides");
+				for (int i = 0; i < overrides.length(); i++) {
+					JSONObject overrideObject = overrides.getJSONObject(i);
+					// Assuming there's a method in ItemOverride or elsewhere for deserializing a
+					// single JSONObject to an ItemOverride instance
+					ItemOverride itemOverride = ItemOverride.deserialize(overrideObject.toString());
+					list.add(itemOverride);
+				}
+			}
+
+			return list;
+		}
+
 		private Map<String, String> getTextures(JSONObject parJsonObject) {
 			HashMap hashmap = Maps.newHashMap();
 			if (parJsonObject.has("textures")) {

src/main/java/net/minecraft/client/renderer/block/statemap/BlockStateMapper.java

@@ -12,6 +12,7 @@ import com.google.common.collect.Sets;
 import net.minecraft.block.Block;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.resources.model.ModelResourceLocation;
+import net.minecraft.util.ResourceLocation;
 
 /**
  * +
@@ -67,4 +68,32 @@ public class BlockStateMapper {
 
 		return identityhashmap;
 	}
+
+	public Set<ResourceLocation> getBlockstateLocations(Block blockIn) {
+		if (this.setBuiltInBlocks.contains(blockIn)) {
+			return Collections.<ResourceLocation>emptySet();
+		} else {
+			IStateMapper istatemapper = (IStateMapper) this.blockStateMap.get(blockIn);
+
+			if (istatemapper == null) {
+				return Collections.<ResourceLocation>singleton(Block.blockRegistry.getNameForObject(blockIn));
+			} else {
+				Set<ResourceLocation> set = Sets.<ResourceLocation>newHashSet();
+
+				for (ModelResourceLocation modelresourcelocation : istatemapper.putStateModelLocations(blockIn)
+						.values()) {
+					set.add(new ResourceLocation(modelresourcelocation.getResourceDomain(),
+							modelresourcelocation.getResourcePath()));
+				}
+
+				return set;
+			}
+		}
+	}
+
+	public Map<IBlockState, ModelResourceLocation> getVariants(Block blockIn) {
+		return this.setBuiltInBlocks.contains(blockIn) ? Collections.<IBlockState, ModelResourceLocation>emptyMap()
+				: ((IStateMapper) Objects.firstNonNull(this.blockStateMap.get(blockIn), new DefaultStateMapper()))
+						.putStateModelLocations(blockIn);
+	}
 }

src/main/java/net/minecraft/client/renderer/entity/RenderItem.java

@@ -6,6 +6,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Callable;
 
+import javax.annotation.Nullable;
+
 import net.hoosiertransfer.EaglerCustomBlock;
 import net.hoosiertransfer.EaglerItems;
 import net.lax1dude.eaglercraft.v1_8.opengl.GlStateManager;
@@ -72,6 +74,7 @@ import net.minecraft.util.MathHelper;
 import net.minecraft.util.ReportedException;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.Vec3i;
+import net.minecraft.world.World;
 
 /**
  * +
@@ -343,15 +346,33 @@ public class RenderItem implements IResourceManagerReloadListener {
 
 	public void func_181564_a(ItemStack parItemStack, ItemCameraTransforms.TransformType parTransformType) {
 		if (parItemStack != null) {
-			IBakedModel ibakedmodel = this.itemModelMesher.getItemModel(parItemStack);
+			IBakedModel ibakedmodel = this.getItemModelWithOverrides(parItemStack, (World) null,
+					(EntityLivingBase) null);
 			this.renderItemModelTransform(parItemStack, ibakedmodel, parTransformType);
 		}
 	}
 
+	public IBakedModel getItemModelWithOverrides(ItemStack stack, @Nullable World worldIn,
+			@Nullable EntityLivingBase entitylivingbaseIn) {
+		IBakedModel ibakedmodel = this.itemModelMesher.getItemModel(stack);
+		Item item = stack.getItem();
+
+		if (item != null && item.hasCustomProperties()) {
+			ResourceLocation resourcelocation = ibakedmodel.getOverrides().applyOverride(stack, worldIn,
+					entitylivingbaseIn);
+			return resourcelocation == null ? ibakedmodel
+					: this.itemModelMesher.getModelManager()
+							.getModel(new ModelResourceLocation(resourcelocation, "inventory"));
+		} else {
+			return ibakedmodel;
+		}
+	}
+
 	public void renderItemModelForEntity(ItemStack stack, EntityLivingBase entityToRenderFor,
 			ItemCameraTransforms.TransformType cameraTransformType) {
 		if (stack != null && entityToRenderFor != null) {
-			IBakedModel ibakedmodel = this.itemModelMesher.getItemModel(stack);
+			IBakedModel ibakedmodel = this.getItemModelWithOverrides(stack, entityToRenderFor.worldObj,
+					entityToRenderFor);
 			if (entityToRenderFor instanceof EntityPlayer) {
 				EntityPlayer entityplayer = (EntityPlayer) entityToRenderFor;
 				Item item = stack.getItem();
@@ -410,7 +431,11 @@ public class RenderItem implements IResourceManagerReloadListener {
 	}
 
 	public void renderItemIntoGUI(ItemStack stack, int x, int y) {
-		IBakedModel ibakedmodel = this.itemModelMesher.getItemModel(stack);
+		this.renderItemModelIntoGUI(stack, x, y,
+				this.getItemModelWithOverrides(stack, (World) null, (EntityLivingBase) null));
+	}
+
+	public void renderItemModelIntoGUI(ItemStack stack, int x, int y, IBakedModel ibakedmodel) {
 		GlStateManager.pushMatrix();
 		this.textureManager.bindTexture(TextureMap.locationBlocksTexture);
 		this.textureManager.getTexture(TextureMap.locationBlocksTexture).setBlurMipmap(false, false);
@@ -449,12 +474,18 @@ public class RenderItem implements IResourceManagerReloadListener {
 
 	}
 
-	public void renderItemAndEffectIntoGUI(final ItemStack stack, int xPosition, int yPosition) {
+	public void renderItemAndEffectIntoGUI(ItemStack stack, int xPosition, int yPosition) {
+		this.renderItemAndEffectIntoGUI(Minecraft.getMinecraft().thePlayer, stack, xPosition, yPosition);
+	}
+
+	public void renderItemAndEffectIntoGUI(@Nullable EntityLivingBase p_184391_1_, final ItemStack stack, int xPosition,
+			int yPosition) {
 		if (stack != null && stack.getItem() != null) {
 			this.zLevel += 50.0F;
 
 			try {
-				this.renderItemIntoGUI(stack, xPosition, yPosition);
+				this.renderItemModelIntoGUI(stack, xPosition, yPosition,
+						this.getItemModelWithOverrides(stack, (World) null, p_184391_1_));
 			} catch (Throwable throwable) {
 				CrashReport crashreport = CrashReport.makeCrashReport(throwable, "Rendering item");
 				CrashReportCategory crashreportcategory = crashreport.makeCategory("Item being rendered");

src/main/java/net/minecraft/client/resources/model/BuiltInModel.java

@@ -5,6 +5,7 @@ import java.util.List;
 import net.lax1dude.eaglercraft.v1_8.minecraft.EaglerTextureAtlasSprite;
 import net.minecraft.client.renderer.block.model.BakedQuad;
 import net.minecraft.client.renderer.block.model.ItemCameraTransforms;
+import net.minecraft.client.renderer.block.model.ItemOverrideList;
 import net.minecraft.util.EnumFacing;
 
 /**
@@ -38,9 +39,11 @@ import net.minecraft.util.EnumFacing;
  */
 public class BuiltInModel implements IBakedModel {
 	private ItemCameraTransforms cameraTransforms;
+	private final ItemOverrideList overrideList;
 
-	public BuiltInModel(ItemCameraTransforms parItemCameraTransforms) {
+	public BuiltInModel(ItemCameraTransforms parItemCameraTransforms, ItemOverrideList itemOverrides) {
 		this.cameraTransforms = parItemCameraTransforms;
+		this.overrideList = itemOverrides;
 	}
 
 	public List<BakedQuad> getFaceQuads(EnumFacing var1) {
@@ -70,4 +73,8 @@ public class BuiltInModel implements IBakedModel {
 	public ItemCameraTransforms getItemCameraTransforms() {
 		return this.cameraTransforms;
 	}
+
+	public ItemOverrideList getOverrides() {
+		return this.overrideList;
+	}
 }

src/main/java/net/minecraft/client/resources/model/IBakedModel.java

@@ -5,6 +5,7 @@ import java.util.List;
 import net.lax1dude.eaglercraft.v1_8.minecraft.EaglerTextureAtlasSprite;
 import net.minecraft.client.renderer.block.model.BakedQuad;
 import net.minecraft.client.renderer.block.model.ItemCameraTransforms;
+import net.minecraft.client.renderer.block.model.ItemOverrideList;
 import net.minecraft.util.EnumFacing;
 
 /**
@@ -50,4 +51,7 @@ public interface IBakedModel {
 	EaglerTextureAtlasSprite getParticleTexture();
 
 	ItemCameraTransforms getItemCameraTransforms();
+
+	ItemOverrideList getOverrides();
+
 }

src/main/java/net/minecraft/client/resources/model/ModelBakery.java

@@ -282,20 +282,34 @@ public class ModelBakery {
 		for (Item item : Item.itemRegistry) {
 			for (String s : this.getVariantNames(item)) {
 				ResourceLocation resourcelocation = this.getItemLocation(s);
-				this.itemLocations.put(s, resourcelocation);
+				ResourceLocation resourcelocation1 = (ResourceLocation) Item.itemRegistry.getNameForObject(item);
-				if (this.models.get(resourcelocation) == null) {
+				this.loadItemModel(s, resourcelocation, resourcelocation1);
-					try {
+
-						ModelBlock modelblock = this.loadModel(resourcelocation);
+				if (item.hasCustomProperties()) {
-						this.models.put(resourcelocation, modelblock);
+					ModelBlock modelblock = (ModelBlock) this.models.get(resourcelocation);
-					} catch (Exception exception) {
+
-						LOGGER.warn("Unable to load item model: \'" + resourcelocation + "\' for item: \'"
+					if (modelblock != null) {
-								+ Item.itemRegistry.getNameForObject(item) + "\'");
+						for (ResourceLocation resourcelocation2 : modelblock.getOverrideLocations()) {
-						LOGGER.warn(exception);
+							this.loadItemModel(resourcelocation2.toString(), resourcelocation2, resourcelocation1);
+						}
+					}
 				}
 			}
 		}
 	}
 
+	private void loadItemModel(String p_188634_1_, ResourceLocation p_188634_2_, ResourceLocation p_188634_3_) {
+		this.itemLocations.put(p_188634_1_, p_188634_2_);
+
+		if (this.models.get(p_188634_2_) == null) {
+			try {
+				ModelBlock modelblock = this.loadModel(p_188634_2_);
+				this.models.put(p_188634_2_, modelblock);
+			} catch (Exception exception) {
+				LOGGER.warn((String) ("Unable to load item model: \'" + p_188634_2_ + "\' for item: \'" + p_188634_3_
+						+ "\'"), (Throwable) exception);
+			}
+		}
 	}
 
 	private void registerVariantNames() {
@@ -491,7 +505,8 @@ public class ModelBakery {
 			ModelBlock modelblock1 = (ModelBlock) this.models.get(resourcelocation);
 			if (modelblock1 != null && modelblock1.isResolved()) {
 				if (this.isCustomRenderer(modelblock1)) {
-					this.bakedRegistry.putObject(modelresourcelocation1, new BuiltInModel(modelblock1.func_181682_g()));
+					this.bakedRegistry.putObject(modelresourcelocation1,
+							new BuiltInModel(modelblock1.func_181682_g(), modelblock1.createOverrides()));
 				} else {
 					this.bakedRegistry.putObject(modelresourcelocation1,
 							this.bakeModel(modelblock1, ModelRotation.X0_Y0, false));
@@ -535,7 +550,8 @@ public class ModelBakery {
 	private IBakedModel bakeModel(ModelBlock modelBlockIn, ModelRotation modelRotationIn, boolean uvLocked) {
 		EaglerTextureAtlasSprite textureatlassprite = (EaglerTextureAtlasSprite) this.sprites
 				.get(new ResourceLocation(modelBlockIn.resolveTextureName("particle")));
-		SimpleBakedModel.Builder simplebakedmodel$builder = (new SimpleBakedModel.Builder(modelBlockIn))
+		SimpleBakedModel.Builder simplebakedmodel$builder = (new SimpleBakedModel.Builder(modelBlockIn,
+				modelBlockIn.createOverrides()))
 				.setTexture(textureatlassprite);
 
 		for (BlockPart blockpart : modelBlockIn.getElements()) {

src/main/java/net/minecraft/client/resources/model/SimpleBakedModel.java

@@ -8,6 +8,7 @@ import net.lax1dude.eaglercraft.v1_8.minecraft.EaglerTextureAtlasSprite;
 import net.minecraft.client.renderer.block.model.BakedQuad;
 import net.minecraft.client.renderer.block.model.BreakingFour;
 import net.minecraft.client.renderer.block.model.ItemCameraTransforms;
+import net.minecraft.client.renderer.block.model.ItemOverrideList;
 import net.minecraft.client.renderer.block.model.ModelBlock;
 import net.minecraft.util.EnumFacing;
 
@@ -47,15 +48,18 @@ public class SimpleBakedModel implements IBakedModel {
 	protected final boolean gui3d;
 	protected final EaglerTextureAtlasSprite texture;
 	protected final ItemCameraTransforms cameraTransforms;
+	protected final ItemOverrideList itemOverrideList;
 
 	public SimpleBakedModel(List<BakedQuad> parList, List<List<BakedQuad>> parList2, boolean parFlag, boolean parFlag2,
-			EaglerTextureAtlasSprite parTextureAtlasSprite, ItemCameraTransforms parItemCameraTransforms) {
+			EaglerTextureAtlasSprite parTextureAtlasSprite, ItemCameraTransforms parItemCameraTransforms,
+			ItemOverrideList itemOverrideListIn) {
 		this.generalQuads = parList;
 		this.faceQuads = parList2;
 		this.ambientOcclusion = parFlag;
 		this.gui3d = parFlag2;
 		this.texture = parTextureAtlasSprite;
 		this.cameraTransforms = parItemCameraTransforms;
+		this.itemOverrideList = itemOverrideListIn;
 	}
 
 	public List<BakedQuad> getFaceQuads(EnumFacing enumfacing) {
@@ -86,21 +90,27 @@ public class SimpleBakedModel implements IBakedModel {
 		return this.cameraTransforms;
 	}
 
+	public ItemOverrideList getOverrides() {
+		return this.itemOverrideList;
+	}
+
 	public static class Builder {
 		private final List<BakedQuad> builderGeneralQuads;
 		private final List<List<BakedQuad>> builderFaceQuads;
+		private final ItemOverrideList builderItemOverrideList;
 		private final boolean builderAmbientOcclusion;
 		private EaglerTextureAtlasSprite builderTexture;
 		private boolean builderGui3d;
 		private ItemCameraTransforms builderCameraTransforms;
 
-		public Builder(ModelBlock parModelBlock) {
+		public Builder(ModelBlock parModelBlock, ItemOverrideList p_i46988_2_) {
-			this(parModelBlock.isAmbientOcclusion(), parModelBlock.isGui3d(), parModelBlock.func_181682_g());
+			this(parModelBlock.isAmbientOcclusion(), parModelBlock.isGui3d(), parModelBlock.func_181682_g(),
+					p_i46988_2_);
 		}
 
 		public Builder(IBakedModel parIBakedModel, EaglerTextureAtlasSprite parTextureAtlasSprite) {
 			this(parIBakedModel.isAmbientOcclusion(), parIBakedModel.isGui3d(),
-					parIBakedModel.getItemCameraTransforms());
+					parIBakedModel.getItemCameraTransforms(), parIBakedModel.getOverrides());
 			this.builderTexture = parIBakedModel.getParticleTexture();
 
 			EnumFacing[] facings = EnumFacing._VALUES;
@@ -129,7 +139,8 @@ public class SimpleBakedModel implements IBakedModel {
 
 		}
 
-		private Builder(boolean parFlag, boolean parFlag2, ItemCameraTransforms parItemCameraTransforms) {
+		private Builder(boolean parFlag, boolean parFlag2, ItemCameraTransforms parItemCameraTransforms,
+				ItemOverrideList p_i46990_4_) {
 			this.builderGeneralQuads = Lists.newArrayList();
 			this.builderFaceQuads = Lists.newArrayListWithCapacity(6);
 
@@ -137,6 +148,7 @@ public class SimpleBakedModel implements IBakedModel {
 				this.builderFaceQuads.add(Lists.newArrayList());
 			}
 
+			this.builderItemOverrideList = p_i46990_4_;
 			this.builderAmbientOcclusion = parFlag;
 			this.builderGui3d = parFlag2;
 			this.builderCameraTransforms = parItemCameraTransforms;
@@ -163,7 +175,7 @@ public class SimpleBakedModel implements IBakedModel {
 			} else {
 				return new SimpleBakedModel(this.builderGeneralQuads, this.builderFaceQuads,
 						this.builderAmbientOcclusion, this.builderGui3d, this.builderTexture,
-						this.builderCameraTransforms);
+						this.builderCameraTransforms, this.builderItemOverrideList);
 			}
 		}
 	}

src/main/java/net/minecraft/client/resources/model/WeightedBakedModel.java

@@ -9,6 +9,7 @@ import com.google.common.collect.Lists;
 import net.lax1dude.eaglercraft.v1_8.minecraft.EaglerTextureAtlasSprite;
 import net.minecraft.client.renderer.block.model.BakedQuad;
 import net.minecraft.client.renderer.block.model.ItemCameraTransforms;
+import net.minecraft.client.renderer.block.model.ItemOverrideList;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.WeightedRandom;
 
@@ -85,6 +86,10 @@ public class WeightedBakedModel implements IBakedModel {
 				Math.abs((int) parLong1 >> 16) % this.totalWeight)).model;
 	}
 
+	public ItemOverrideList getOverrides() {
+		return this.baseModel.getOverrides();
+	}
+
 	public static class Builder {
 		private List<WeightedBakedModel.MyWeighedRandomItem> listItems = Lists.newArrayList();
 

src/main/java/net/minecraft/item/IItemPropertyGetter.java

@@ -0,0 +1,9 @@
+package net.minecraft.item;
+
+import javax.annotation.Nullable;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.world.World;
+
+public interface IItemPropertyGetter {
+    float apply(ItemStack stack, World worldIn, EntityLivingBase entityIn);
+}

src/main/java/net/minecraft/item/Item.java

@@ -3,6 +3,8 @@ package net.minecraft.item;
 import java.util.List;
 import java.util.Map;
 
+import javax.annotation.Nullable;
+
 import net.hoosiertransfer.EaglerCustomBlock;
 import net.hoosiertransfer.EaglerItems;
 import net.lax1dude.eaglercraft.v1_8.EaglercraftRandom;
@@ -42,9 +44,11 @@ import net.minecraft.potion.Potion;
 import net.minecraft.potion.PotionHelper;
 import net.minecraft.util.BlockPos;
 import net.minecraft.util.EnumFacing;
+import net.minecraft.util.IRegistry;
 import net.minecraft.util.MathHelper;
 import net.minecraft.util.MovingObjectPosition;
 import net.minecraft.util.RegistryNamespaced;
+import net.minecraft.util.RegistrySimple;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.StatCollector;
 import net.minecraft.util.Vec3;
@@ -82,10 +86,38 @@ import net.minecraft.world.World;
  */
 public class Item {
 	public static final RegistryNamespaced<ResourceLocation, Item> itemRegistry = new RegistryNamespaced();
+	private static final IItemPropertyGetter DAMAGED_GETTER = new IItemPropertyGetter() {
+		public float apply(ItemStack stack, @Nullable World worldIn, @Nullable EntityLivingBase entityIn) {
+			return stack.isItemDamaged() ? 1.0F : 0.0F;
+		}
+	};
+	private static final IItemPropertyGetter DAMAGE_GETTER = new IItemPropertyGetter() {
+		public float apply(ItemStack stack, @Nullable World worldIn, @Nullable EntityLivingBase entityIn) {
+			return MathHelper.clamp_float((float) stack.getItemDamage() / (float) stack.getMaxDamage(), 0.0F, 1.0F);
+		}
+	};
+	private static final IItemPropertyGetter LEFTHANDED_GETTER = new IItemPropertyGetter() {
+		public float apply(ItemStack stack, @Nullable World worldIn, @Nullable EntityLivingBase entityIn) {
+			// return entityIn != null && entityIn.getPrimaryHand() != EnumHandSide.RIGHT ?
+			// 1.0F : 0.0F;
+			return 0.0F;
+		}
+	};
+	private static final IItemPropertyGetter COOLDOWN_GETTER = new IItemPropertyGetter() {
+		public float apply(ItemStack stack, @Nullable World worldIn, @Nullable EntityLivingBase entityIn) {
+			return entityIn instanceof EntityPlayer
+					? ((EntityPlayer) entityIn).getCooldownTracker().getCooldown(stack.getItem(), 0.0F)
+					: 0.0F;
+		}
+	};
+
+	private final IRegistry<ResourceLocation, IItemPropertyGetter> properties = new RegistrySimple();
+
 	private static final Map<Block, Item> BLOCK_TO_ITEM = Maps.newHashMap();
 	protected static final EaglercraftUUID ATTACK_DAMAGE_MODIFIER = EaglercraftUUID
 			.fromString("CB3F55D3-645C-4F38-A497-9C13A33DB5CF");
-    protected static final EaglercraftUUID ATTACK_SPEED_MODIFIER = EaglercraftUUID.fromString("FA233E1C-4180-4865-B01B-BCCE9785ACA3");
+	protected static final EaglercraftUUID ATTACK_SPEED_MODIFIER = EaglercraftUUID
+			.fromString("FA233E1C-4180-4865-B01B-BCCE9785ACA3");
 	private CreativeTabs tabToDisplayOn;
 	/**
 	 * +
@@ -135,6 +167,23 @@ public class Item {
 		return item;
 	}
 
+	/**
+	 * Creates a new override param for item models. See usage in clock, compass,
+	 * elytra, etc.
+	 */
+	public final void addPropertyOverride(ResourceLocation key, IItemPropertyGetter getter) {
+		this.properties.putObject(key, getter);
+	}
+
+	@Nullable
+	public IItemPropertyGetter getPropertyGetter(ResourceLocation key) {
+		return (IItemPropertyGetter) this.properties.getObject(key);
+	}
+
+	public boolean hasCustomProperties() {
+		return !this.properties.getKeys().isEmpty();
+	}
+
 	/**
 	 * +
 	 * Called when an ItemStack with NBT data is read to potentially

src/main/java/net/minecraft/item/ItemElytra.java

@@ -1,9 +1,13 @@
 package net.minecraft.item;
 
+import javax.annotation.Nullable;
+
 import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.entity.EntityLiving;
+import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.init.Items;
+import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.World;
 
 public class ItemElytra extends Item {
@@ -11,16 +15,14 @@ public class ItemElytra extends Item {
         this.maxStackSize = 1;
         this.setMaxDamage(432);
         this.setCreativeTab(CreativeTabs.tabTransport);
-        // this.addPropertyOverride(new ResourceLocation("broken"), new
+        this.addPropertyOverride(new ResourceLocation("broken"), new IItemPropertyGetter() {
-        // IItemPropertyGetter() {
+            public float apply(ItemStack stack, @Nullable World worldIn, @Nullable EntityLivingBase entityIn) {
-        // public float apply(ItemStack stack, @Nullable World worldIn, @Nullable
+                return ItemElytra.isBroken(stack) ? 0.0F : 1.0F;
-        // EntityLivingBase entityIn) {
+            }
-        // return ItemElytra.isBroken(stack) ? 0.0F : 1.0F;
+        });
-        // }
-        // });
     }
 
-    public boolean isBroken(ItemStack stack) {
+    public static boolean isBroken(ItemStack stack) {
         return stack.getItemDamage() < stack.getMaxDamage() - 1;
     }
 

src/main/java/net/minecraft/util/IRegistry.java

@@ -1,5 +1,7 @@
 package net.minecraft.util;
 
+import java.util.Set;
+
 /**
  * +
  * This portion of EaglercraftX contains deobfuscated Minecraft 1.8 source code.
@@ -37,4 +39,6 @@ public interface IRegistry<K, V> extends Iterable<V> {
 	 * Register an object on this registry.
 	 */
 	void putObject(K var1, V var2);
+
+	Set<K> getKeys();
 }