Model animation system.

Main things of interest:
  * IAnimationStateMachine - state machine for animations; can load
    from json.
  * AnimationTESR - automatic TESR for animated models.
  * AnimationModelBase - same for entities.
  * ITimeValue - time-varying value, used to control animation
    parameters from code.

  * TESRs can now be batched - look at TESR.renderTileEntityFast +
    TE.hasFastRenderer.
  * RegionRenderCache is not accessible to TESRs and other client-side
    logic - MinecraftForgeClient.getRegionRenderCache.

patches/minecraft/net/minecraft/client/renderer/RenderGlobal.java.patch

@@ -56,7 +56,15 @@
                              flag2 = this.field_175010_j.func_178635_a(entity2, p_180446_2_, d0, d1, d2) || entity2.field_70153_n == this.field_72777_q.field_71439_g;
  
                              if (!flag2)
-@@ -662,6 +673,7 @@
+@@ -654,6 +665,7 @@
+             this.field_72769_h.field_72984_F.func_76318_c("blockentities");
+             RenderHelper.func_74519_b();
+ 
++            TileEntityRendererDispatcher.field_147556_a.preDrawBatch();
+             for (RenderGlobal.ContainerLocalRenderInformation renderglobal$containerlocalrenderinformation1 : this.field_72755_R)
+             {
+                 List<TileEntity> list1 = renderglobal$containerlocalrenderinformation1.field_178036_a.func_178571_g().func_178485_b();
+@@ -662,6 +674,7 @@
                  {
                      for (TileEntity tileentity2 : list1)
                      {
@@ -64,7 +72,7 @@
                          TileEntityRendererDispatcher.field_147556_a.func_180546_a(tileentity2, p_180446_3_, -1);
                      }
                  }
-@@ -671,6 +683,7 @@
+@@ -671,9 +684,11 @@
              {
                  for (TileEntity tileentity : this.field_181024_n)
                  {
@@ -72,7 +80,11 @@
                      TileEntityRendererDispatcher.field_147556_a.func_180546_a(tileentity, p_180446_3_, -1);
                  }
              }
-@@ -700,7 +713,7 @@
++            TileEntityRendererDispatcher.field_147556_a.drawBatch(pass);
+ 
+             this.func_180443_s();
+ 
+@@ -700,7 +715,7 @@
  
                  Block block = this.field_72769_h.func_180495_p(blockpos).func_177230_c();
  
@@ -81,7 +93,7 @@
                  {
                      TileEntityRendererDispatcher.field_147556_a.func_180546_a(tileentity1, p_180446_3_, destroyblockprogress.func_73106_e());
                  }
-@@ -1161,6 +1174,12 @@
+@@ -1161,6 +1176,12 @@
  
      public void func_174976_a(float p_174976_1_, int p_174976_2_)
      {
@@ -94,7 +106,7 @@
          if (this.field_72777_q.field_71441_e.field_73011_w.func_177502_q() == 1)
          {
              this.func_180448_r();
-@@ -1378,6 +1397,12 @@
+@@ -1378,6 +1399,12 @@
  
      public void func_180447_b(float p_180447_1_, int p_180447_2_)
      {
@@ -107,7 +119,7 @@
          if (this.field_72777_q.field_71441_e.field_73011_w.func_76569_d())
          {
              if (this.field_72777_q.field_71474_y.func_181147_e() == 2)
-@@ -1793,8 +1818,11 @@
+@@ -1793,8 +1820,11 @@
                  double d4 = (double)blockpos.func_177956_o() - d1;
                  double d5 = (double)blockpos.func_177952_p() - d2;
                  Block block = this.field_72769_h.func_180495_p(blockpos).func_177230_c();
@@ -120,7 +132,7 @@
                  {
                      if (d3 * d3 + d4 * d4 + d5 * d5 > 1024.0D)
                      {
-@@ -1949,13 +1977,16 @@
+@@ -1949,13 +1979,16 @@
          if (p_174961_1_ != null)
          {
              ItemRecord itemrecord = ItemRecord.func_150926_b(p_174961_1_);

patches/minecraft/net/minecraft/client/renderer/chunk/RenderChunk.java.patch

@@ -1,15 +1,17 @@
 --- ../src-base/minecraft/net/minecraft/client/renderer/chunk/RenderChunk.java
 +++ ../src-work/minecraft/net/minecraft/client/renderer/chunk/RenderChunk.java
-@@ -131,7 +131,7 @@
+@@ -131,7 +131,9 @@
                  return;
              }
  
 -            iblockaccess = new RegionRenderCache(this.field_178588_d, blockpos.func_177982_a(-1, -1, -1), blockpos1.func_177982_a(1, 1, 1), 1);
-+            iblockaccess = createRegionRenderCache(this.field_178588_d, blockpos.func_177982_a(-1, -1, -1), blockpos1.func_177982_a(1, 1, 1), 1);
++            RegionRenderCache cache = createRegionRenderCache(this.field_178588_d, blockpos.func_177982_a(-1, -1, -1), blockpos1.func_177982_a(1, 1, 1), 1);
++            net.minecraftforge.client.MinecraftForgeClient.onRebuildChunk(field_178588_d, field_178586_f, cache);
++            iblockaccess = cache;
              p_178581_4_.func_178543_a(compiledchunk);
          }
          finally
-@@ -158,7 +158,7 @@
+@@ -158,7 +160,7 @@
                      lvt_10_1_.func_178606_a(blockpos$mutableblockpos);
                  }
  
@@ -18,7 +20,7 @@
                  {
                      TileEntity tileentity = iblockaccess.func_175625_s(new BlockPos(blockpos$mutableblockpos));
                      TileEntitySpecialRenderer<TileEntity> tileentityspecialrenderer = TileEntityRendererDispatcher.field_147556_a.<TileEntity>func_147547_b(tileentity);
-@@ -174,7 +174,9 @@
+@@ -174,7 +176,9 @@
                      }
                  }
  
@@ -29,7 +31,7 @@
                  int j = enumworldblocklayer1.ordinal();
  
                  if (block.func_149645_b() != -1)
-@@ -189,6 +191,7 @@
+@@ -189,6 +193,7 @@
  
                      aboolean[j] |= blockrendererdispatcher.func_175018_a(iblockstate, blockpos$mutableblockpos, iblockaccess, worldrenderer);
                  }
@@ -37,7 +39,7 @@
              }
  
              for (EnumWorldBlockLayer enumworldblocklayer : EnumWorldBlockLayer.values())
-@@ -385,6 +388,26 @@
+@@ -385,6 +390,26 @@
          return this.field_178593_n;
      }
  

patches/minecraft/net/minecraft/client/renderer/tileentity/TileEntityRendererDispatcher.java.patch

@@ -0,0 +1,79 @@
+--- ../src-base/minecraft/net/minecraft/client/renderer/tileentity/TileEntityRendererDispatcher.java
++++ ../src-work/minecraft/net/minecraft/client/renderer/tileentity/TileEntityRendererDispatcher.java
+@@ -102,11 +102,14 @@
+     {
+         if (p_180546_1_.func_145835_a(this.field_147560_j, this.field_147561_k, this.field_147558_l) < p_180546_1_.func_145833_n())
+         {
++            if(!p_180546_1_.hasFastRenderer())
++            {
+             int i = this.field_147550_f.func_175626_b(p_180546_1_.func_174877_v(), 0);
+             int j = i % 65536;
+             int k = i / 65536;
+             OpenGlHelper.func_77475_a(OpenGlHelper.field_77476_b, (float)j / 1.0F, (float)k / 1.0F);
+             GlStateManager.func_179131_c(1.0F, 1.0F, 1.0F, 1.0F);
++            }
+             BlockPos blockpos = p_180546_1_.func_174877_v();
+             this.func_178469_a(p_180546_1_, (double)blockpos.func_177958_n() - field_147554_b, (double)blockpos.func_177956_o() - field_147555_c, (double)blockpos.func_177952_p() - field_147552_d, p_180546_2_, p_180546_3_);
+         }
+@@ -125,6 +128,11 @@
+         {
+             try
+             {
++                if(p_178469_1_.hasFastRenderer())
++                {
++                    tileentityspecialrenderer.renderTileEntityFast(p_178469_1_, p_178469_2_, p_178469_4_, p_178469_6_, p_178469_8_, p_178469_9_, batchBuffer.func_178180_c());
++                }
++                else
+                 tileentityspecialrenderer.func_180535_a(p_178469_1_, p_178469_2_, p_178469_4_, p_178469_6_, p_178469_8_, p_178469_9_);
+             }
+             catch (Throwable throwable)
+@@ -146,4 +154,49 @@
+     {
+         return this.field_147557_n;
+     }
++
++    /* ======================================== FORGE START =====================================*/
++    /**
++     * Buffer used for batched TESRs
++     */
++    private net.minecraft.client.renderer.Tessellator batchBuffer = new net.minecraft.client.renderer.Tessellator(0x200000);
++
++    /**
++     * Prepare for a batched TESR rendering.
++     * You probably shouldn't call this manually.
++     */
++    public void preDrawBatch()
++    {
++        batchBuffer.func_178180_c().func_181668_a(org.lwjgl.opengl.GL11.GL_QUADS, net.minecraft.client.renderer.vertex.DefaultVertexFormats.field_176600_a);
++    }
++
++    /**
++     * Render all TESRs batched so far.
++     * You probably shouldn't call this manually.
++     */
++    public void drawBatch(int pass)
++    {
++        field_147553_e.func_110577_a(net.minecraft.client.renderer.texture.TextureMap.field_110575_b);
++        net.minecraft.client.renderer.RenderHelper.func_74518_a();
++        GlStateManager.func_179112_b(org.lwjgl.opengl.GL11.GL_SRC_ALPHA, org.lwjgl.opengl.GL11.GL_ONE_MINUS_SRC_ALPHA);
++        GlStateManager.func_179147_l();
++        GlStateManager.func_179129_p();
++
++        if (net.minecraft.client.Minecraft.func_71379_u())
++        {
++            GlStateManager.func_179103_j(org.lwjgl.opengl.GL11.GL_SMOOTH);
++        }
++        else
++        {
++            GlStateManager.func_179103_j(org.lwjgl.opengl.GL11.GL_FLAT);
++        }
++
++        if(pass > 0)
++        {
++            batchBuffer.func_178180_c().func_181674_a((float)field_147554_b, (float)field_147555_c, (float)field_147552_d);
++        }
++        batchBuffer.func_78381_a();
++
++        net.minecraft.client.renderer.RenderHelper.func_74519_b();
++    }
+ }

patches/minecraft/net/minecraft/client/renderer/tileentity/TileEntitySpecialRenderer.java.patch

@@ -0,0 +1,9 @@
+--- ../src-base/minecraft/net/minecraft/client/renderer/tileentity/TileEntitySpecialRenderer.java
++++ ../src-work/minecraft/net/minecraft/client/renderer/tileentity/TileEntitySpecialRenderer.java
+@@ -45,4 +45,6 @@
+     {
+         return false;
+     }
++
++    public void renderTileEntityFast(T te, double x, double y, double z, float partialTicks, int destroyStage, net.minecraft.client.renderer.WorldRenderer worldRenderer) {}
+ }

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

@@ -65,7 +65,7 @@
      public double func_145835_a(double p_145835_1_, double p_145835_3_, double p_145835_5_)
      {
          double d0 = (double)this.field_174879_c.func_177958_n() + 0.5D - p_145835_1_;
-@@ -279,4 +293,176 @@
+@@ -279,4 +293,185 @@
          func_145826_a(TileEntityFlowerPot.class, "FlowerPot");
          func_145826_a(TileEntityBanner.class, "Banner");
      }
@@ -212,6 +212,15 @@
 +        // NOOP
 +    }
 +
++    /**
++     * If the TileEntitySpecialRenderer associated with this TileEntity can be batched in with another renderers, and won't access the GL state.
++     * If TileEntity returns true, then TESR should have the same functionality as (and probably extend) the FastTESR class.
++     */
++    public boolean hasFastRenderer()
++    {
++        return false;
++    }
++
 +    private net.minecraftforge.common.capabilities.CapabilityDispatcher capabilities;
 +    public TileEntity()
 +    {

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

@@ -412,28 +412,30 @@ public class ForgeHooksClient
     public static void preDraw(EnumUsage attrType, VertexFormat format, int element, int stride, ByteBuffer buffer)
     {
         VertexFormatElement attr = format.getElement(element);
+        int count = attr.getElementCount();
+        int constant = attr.getType().getGlConstant();
         buffer.position(format.func_181720_d(element));
         switch(attrType)
         {
             case POSITION:
-                glVertexPointer(attr.getElementCount(), attr.getType().getGlConstant(), stride, buffer);
+                glVertexPointer(count, constant, stride, buffer);
                 glEnableClientState(GL_VERTEX_ARRAY);
                 break;
             case NORMAL:
-                if(attr.getElementCount() != 3)
+                if(count != 3)
                 {
                     throw new IllegalArgumentException("Normal attribute should have the size 3: " + attr);
                 }
-                glNormalPointer(attr.getType().getGlConstant(), stride, buffer);
+                glNormalPointer(constant, stride, buffer);
                 glEnableClientState(GL_NORMAL_ARRAY);
                 break;
             case COLOR:
-                glColorPointer(attr.getElementCount(), attr.getType().getGlConstant(), stride, buffer);
+                glColorPointer(count, constant, stride, buffer);
                 glEnableClientState(GL_COLOR_ARRAY);
                 break;
             case UV:
                 OpenGlHelper.setClientActiveTexture(OpenGlHelper.defaultTexUnit + attr.getIndex());
-                glTexCoordPointer(attr.getElementCount(), attr.getType().getGlConstant(), stride, buffer);
+                glTexCoordPointer(count, constant, stride, buffer);
                 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
                 OpenGlHelper.setClientActiveTexture(OpenGlHelper.defaultTexUnit);
                 break;
@@ -441,7 +443,7 @@ public class ForgeHooksClient
                 break;
             case GENERIC:
                 glEnableVertexAttribArray(attr.getIndex());
-                glVertexAttribPointer(attr.getIndex(), attr.getElementCount(), attr.getType().getGlConstant(), false, stride, buffer);
+                glVertexAttribPointer(attr.getIndex(), count, constant, false, stride, buffer);
             default:
                 FMLLog.severe("Unimplemented vanilla attribute upload: %s", attrType.getDisplayName());
         }

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

@@ -6,7 +6,18 @@
 package net.minecraftforge.client;
 
 import java.util.BitSet;
+import java.util.concurrent.TimeUnit;
+
+import net.minecraft.client.renderer.RegionRenderCache;
+import net.minecraft.util.BlockPos;
 import net.minecraft.util.EnumWorldBlockLayer;
+import net.minecraft.world.World;
+
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
 
 public class MinecraftForgeClient
 {
@@ -56,4 +67,29 @@ public class MinecraftForgeClient
             stencilBits.set(bit);
         }
     }
+
+    private static final LoadingCache<Pair<World, BlockPos>, RegionRenderCache> regionCache = CacheBuilder.newBuilder()
+        .maximumSize(500)
+        .concurrencyLevel(5)
+        .expireAfterAccess(1, TimeUnit.SECONDS)
+        .build(new CacheLoader<Pair<World, BlockPos>, RegionRenderCache>()
+        {
+            public RegionRenderCache load(Pair<World, BlockPos> key) throws Exception
+            {
+                return new RegionRenderCache(key.getLeft(), key.getRight().add(-1, -1, -1), key.getRight().add(16, 16, 16), 1);
+            }
+        });
+
+    public static void onRebuildChunk(World world, BlockPos position, RegionRenderCache cache)
+    {
+        regionCache.put(Pair.of(world, position), cache);
+    }
+
+    public static RegionRenderCache getRegionRenderCache(World world, BlockPos pos)
+    {
+        int x = pos.getX() & ~0xF;
+        int y = pos.getY() & ~0xF;
+        int z = pos.getZ() & ~0xF;
+        return regionCache.getUnchecked(Pair.of(world, new BlockPos(x, y, z)));
+    }
 }

src/main/java/net/minecraftforge/client/model/ModelLoader.java

@@ -23,6 +23,7 @@ import net.minecraft.client.renderer.ItemMeshDefinition;
 import net.minecraft.client.renderer.ItemModelMesher;
 import net.minecraft.client.renderer.block.model.BlockPart;
 import net.minecraft.client.renderer.block.model.BlockPartFace;
+import net.minecraft.client.renderer.block.model.BlockPartRotation;
 import net.minecraft.client.renderer.block.model.ItemCameraTransforms;
 import net.minecraft.client.renderer.block.model.ItemCameraTransforms.TransformType;
 import net.minecraft.client.renderer.block.model.ItemModelGenerator;
@@ -51,7 +52,13 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.IRegistry;
 import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.client.model.animation.Animation;
+import net.minecraftforge.client.model.animation.IAnimatedModel;
+import net.minecraftforge.client.model.animation.IClip;
+import net.minecraftforge.client.model.animation.ModelBlockAnimation;
 import net.minecraftforge.common.ForgeModContainer;
+import net.minecraftforge.common.property.IExtendedBlockState;
+import net.minecraftforge.common.property.Properties;
 import net.minecraftforge.fluids.Fluid;
 import net.minecraftforge.fluids.FluidContainerRegistry;
 import net.minecraftforge.fluids.FluidRegistry;
@@ -129,14 +136,7 @@ public class ModelLoader extends ModelBakery
                 }
             }
         });
-        Function<ResourceLocation, TextureAtlasSprite> textureGetter = new Function<ResourceLocation, TextureAtlasSprite>()
-        {
-            public TextureAtlasSprite apply(ResourceLocation location)
-            {
-                return Minecraft.getMinecraft().getTextureMapBlocks().getAtlasSprite(location.toString());
-            }
-        };
-        IFlexibleBakedModel missingBaked = missingModel.bake(missingModel.getDefaultState(), DefaultVertexFormats.ITEM, textureGetter);
+        IFlexibleBakedModel missingBaked = missingModel.bake(missingModel.getDefaultState(), DefaultVertexFormats.ITEM, DefaultTextureGetter.instance);
         for (Entry<ModelResourceLocation, IModel> e : stateModels.entrySet())
         {
             if(e.getValue() == getMissingModel())
@@ -145,7 +145,7 @@ public class ModelLoader extends ModelBakery
             }
             else
             {
-                bakedRegistry.putObject(e.getKey(), e.getValue().bake(e.getValue().getDefaultState(), DefaultVertexFormats.ITEM, textureGetter));
+                bakedRegistry.putObject(e.getKey(), e.getValue().bake(e.getValue().getDefaultState(), DefaultVertexFormats.ITEM, DefaultTextureGetter.instance));
             }
         }
         return bakedRegistry;
@@ -407,15 +407,17 @@ public class ModelLoader extends ModelBakery
         textures.addAll(model.getTextures());
     }
 
-    private class VanillaModelWrapper implements IRetexturableModel
+    private class VanillaModelWrapper implements IRetexturableModel, IAnimatedModel
     {
         private final ResourceLocation location;
         private final ModelBlock model;
+        private final ModelBlockAnimation animation;
 
-        public VanillaModelWrapper(ResourceLocation location, ModelBlock model)
+        public VanillaModelWrapper(ResourceLocation location, ModelBlock model, ModelBlockAnimation animation)
         {
             this.location = location;
             this.model = model;
+            this.animation = animation;
         }
 
         public Collection<ResourceLocation> getDependencies()
@@ -508,7 +510,8 @@ public class ModelLoader extends ModelBakery
             List<TRSRTransformation> newTransforms = Lists.newArrayList();
             for(int i = 0; i < model.getElements().size(); i++)
             {
-                newTransforms.add(null);
+                BlockPart part = model.getElements().get(i);
+                newTransforms.add(animation.getPartTransform(state, part, i));
             }
 
             ItemCameraTransforms transforms = model.func_181682_g();
@@ -531,7 +534,7 @@ public class ModelLoader extends ModelBakery
             return bakeNormal(model, perState, state.apply(Optional.<IModelPart>absent()).or(TRSRTransformation.identity()), newTransforms, format, bakedTextureGetter, uvlock);
         }
 
-        private IFlexibleBakedModel bakeNormal(ModelBlock model, IModelState perState, final TRSRTransformation modelState, List<TRSRTransformation> newTransforms, VertexFormat format, Function<ResourceLocation, TextureAtlasSprite> bakedTextureGetter, boolean uvLocked)
+        private IFlexibleBakedModel bakeNormal(ModelBlock model, IModelState perState, final TRSRTransformation modelState, List<TRSRTransformation> newTransforms, VertexFormat format, final Function<ResourceLocation, TextureAtlasSprite> bakedTextureGetter, boolean uvLocked)
         {
             TextureAtlasSprite particle = bakedTextureGetter.apply(new ResourceLocation(model.resolveTextureName("particle")));
             SimpleBakedModel.Builder builder = (new SimpleBakedModel.Builder(model)).setTexture(particle);
@@ -542,6 +545,9 @@ public class ModelLoader extends ModelBakery
                 if(newTransforms.get(i) != null)
                 {
                     transformation = transformation.compose(newTransforms.get(i));
+                    BlockPartRotation rot = part.partRotation;
+                    if(rot == null) rot = new BlockPartRotation(new org.lwjgl.util.vector.Vector3f(), EnumFacing.Axis.Y, 0, false);
+                    part = new BlockPart(part.positionFrom, part.positionTo, part.mapFaces, rot, part.shade);
                 }
                 for(Map.Entry<EnumFacing, BlockPartFace> e : (Iterable<Map.Entry<EnumFacing, BlockPartFace>>)part.mapFaces.entrySet())
                 {
@@ -562,13 +568,25 @@ public class ModelLoader extends ModelBakery
             {
                 public IBakedModel handleBlockState(IBlockState state)
                 {
-                    return VanillaModelWrapper.this.handleBlockState(parent, modelState, state);
+                    return VanillaModelWrapper.this.handleBlockState(parent, bakedTextureGetter, modelState, state);
                 }
             };
         }
 
-        private IBakedModel handleBlockState(IFlexibleBakedModel model, TRSRTransformation modelState, IBlockState state)
+        private IBakedModel handleBlockState(IFlexibleBakedModel model, Function<ResourceLocation, TextureAtlasSprite> bakedTextureGetter, TRSRTransformation modelState, IBlockState state)
         {
+            if(state instanceof IExtendedBlockState)
+            {
+                IExtendedBlockState exState = (IExtendedBlockState)state;
+                if(exState.getUnlistedNames().contains(Properties.AnimationProperty))
+                {
+                    IModelState newState = exState.getValue(Properties.AnimationProperty);
+                    if(newState != null)
+                    {
+                        return VanillaModelWrapper.this.bake(new ModelStateComposition(modelState, newState), model.getFormat(), bakedTextureGetter);
+                    }
+                }
+            }
             return model;
         }
 
@@ -630,7 +648,17 @@ public class ModelLoader extends ModelBakery
                 }
             }
 
-            return new VanillaModelWrapper(location, neweModel);
+            return new VanillaModelWrapper(location, neweModel, animation);
+        }
+
+        @Override
+        public Optional<? extends IClip> getClip(String name)
+        {
+            if(animation.getClips().containsKey(name))
+            {
+                return Optional.<IClip>fromNullable(animation.getClips().get(name));
+            }
+            return Optional.absent();
         }
 
         public IModelState getDefaultState()
@@ -829,7 +857,14 @@ public class ModelLoader extends ModelBakery
 
         public IModel loadModel(ResourceLocation modelLocation) throws IOException
         {
-            return loader.new VanillaModelWrapper(modelLocation, loader.loadModel(modelLocation));
+            String modelPath = modelLocation.getResourcePath();
+            if(modelLocation.getResourcePath().startsWith("models/"))
+            {
+                modelPath = modelPath.substring("models/".length());
+            }
+            ResourceLocation armatureLocation = new ResourceLocation(modelLocation.getResourceDomain(), "armatures/" + modelPath + ".json");
+            ModelBlockAnimation animation = Animation.INSTANCE.loadVanillaAnimation(armatureLocation);
+            return loader.new VanillaModelWrapper(modelLocation, loader.loadModel(modelLocation), animation);
         }
     }
 
@@ -997,4 +1032,19 @@ public class ModelLoader extends ModelBakery
             mesher.register(e.getKey().getLeft().get(), e.getKey().getRight(), e.getValue());
         }
     }
+
+    private static enum DefaultTextureGetter implements Function<ResourceLocation, TextureAtlasSprite>
+    {
+        instance;
+
+        public TextureAtlasSprite apply(ResourceLocation location)
+        {
+            return Minecraft.getMinecraft().getTextureMapBlocks().getAtlasSprite(location.toString());
+        }
+    }
+
+    public static Function<ResourceLocation, TextureAtlasSprite> defaultTextureGetter()
+    {
+        return DefaultTextureGetter.instance;
+    }
 }

src/main/java/net/minecraftforge/client/model/animation/Animation.java

@@ -0,0 +1,184 @@
+package net.minecraftforge.client.model.animation;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
+
+import net.minecraft.client.resources.IResource;
+import net.minecraft.client.resources.IResourceManager;
+import net.minecraft.client.resources.IResourceManagerReloadListener;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.world.World;
+import net.minecraftforge.common.model.animation.IAnimationStateMachine;
+import net.minecraftforge.common.util.JsonUtils;
+import net.minecraftforge.fml.common.FMLLog;
+
+import org.apache.logging.log4j.Level;
+
+import com.google.common.base.Function;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonParseException;
+
+public enum Animation implements IResourceManagerReloadListener
+{
+    INSTANCE;
+
+    /**
+     * Get the global world time for the current tick, in seconds.
+     */
+    public static float getWorldTime(World world)
+    {
+        return getWorldTime(world, 0);
+    }
+
+    /**
+     * Get the global world time for the current tick + partial tick progress, in seconds.
+     */
+    public static float getWorldTime(World world, float tickProgress)
+    {
+        return (world.getTotalWorldTime() + tickProgress) / 20;
+    }
+
+    /**
+     * Load a new instance if AnimationStateMachine at specified location, with specified custom parameters.
+     */
+    public IAnimationStateMachine load(ResourceLocation location, ImmutableMap<String, ITimeValue> customParameters)
+    {
+        try
+        {
+            ClipResolver clipResolver = new ClipResolver();
+            ParameterResolver parameterResolver = new ParameterResolver(customParameters);
+            Clips.CommonClipTypeAdapterFactory.INSTANCE.setClipResolver(clipResolver);
+            TimeValues.CommonTimeValueTypeAdapterFactory.INSTANCE.setValueResolver(parameterResolver);
+            IResource resource = manager.getResource(location);
+            AnimationStateMachine asm = asmGson.fromJson(new InputStreamReader(resource.getInputStream(), StandardCharsets.UTF_8), AnimationStateMachine.class);
+            clipResolver.asm = asm;
+            parameterResolver.asm = asm;
+            asm.initialize();
+            //String json = asmGson.toJson(asm);
+            //System.out.println(location + ": " + json);
+            return asm;
+        }
+        catch(IOException e)
+        {
+            FMLLog.log(Level.ERROR, e, "Exception loading Animation State Machine %s, skipping", location);
+            return missing;
+        }
+        catch(JsonParseException e)
+        {
+            FMLLog.log(Level.ERROR, e, "Exception loading Animation State Machine %s, skipping", location);
+            return missing;
+        }
+        finally
+        {
+            Clips.CommonClipTypeAdapterFactory.INSTANCE.setClipResolver(null);
+            TimeValues.CommonTimeValueTypeAdapterFactory.INSTANCE.setValueResolver(null);
+        }
+    }
+
+    /**
+     * Load armature associated with a vanilla model.
+     */
+    public ModelBlockAnimation loadVanillaAnimation(ResourceLocation armatureLocation)
+    {
+        try
+        {
+            IResource resource = null;
+            try
+            {
+                resource = manager.getResource(armatureLocation);
+            }
+            catch(FileNotFoundException e)
+            {
+                // this is normal. FIXME: error reporting?
+                return defaultModelBlockAnimation;
+            }
+            ModelBlockAnimation mba = mbaGson.fromJson(new InputStreamReader(resource.getInputStream(), StandardCharsets.UTF_8), ModelBlockAnimation.class);
+            String json = mbaGson.toJson(mba);
+            return mba;
+        }
+        catch(IOException e)
+        {
+            FMLLog.log(Level.ERROR, e, "Exception loading vanilla model aniamtion %s, skipping", armatureLocation);
+            return defaultModelBlockAnimation;
+        }
+        catch(JsonParseException e)
+        {
+            FMLLog.log(Level.ERROR, e, "Exception loading vanilla model aniamtion %s, skipping", armatureLocation);
+            return defaultModelBlockAnimation;
+        }
+    }
+
+    private IResourceManager manager;
+
+    private final AnimationStateMachine missing = new AnimationStateMachine(
+        ImmutableMap.<String, ITimeValue>of(),
+        ImmutableMap.of("missingno", (IClip)Clips.IdentityClip.instance),
+        ImmutableList.of("missingno"),
+        ImmutableMap.<String, String>of(),
+        "missingno");
+
+    {
+        missing.initialize();
+    }
+
+    private final Gson asmGson = new GsonBuilder()
+        .registerTypeAdapter(ImmutableList.class, JsonUtils.ImmutableListTypeAdapter.INSTANCE)
+        .registerTypeAdapter(ImmutableMap.class, JsonUtils.ImmutableMapTypeAdapter.INSTANCE)
+        .registerTypeAdapterFactory(Clips.CommonClipTypeAdapterFactory.INSTANCE)
+        //.registerTypeAdapterFactory(ClipProviders.CommonClipProviderTypeAdapterFactory.INSTANCE)
+        .registerTypeAdapterFactory(TimeValues.CommonTimeValueTypeAdapterFactory.INSTANCE)
+        .setPrettyPrinting()
+        .enableComplexMapKeySerialization()
+        .disableHtmlEscaping()
+        .create();
+
+    private static final class ClipResolver implements Function<String, IClip>
+    {
+        private AnimationStateMachine asm;
+
+        public IClip apply(String name)
+        {
+            return asm.getClips().get(name);
+        }
+    }
+
+    private static final class ParameterResolver implements Function<String, ITimeValue>
+    {
+        private final ImmutableMap<String, ITimeValue> customParameters;
+        private AnimationStateMachine asm;
+
+        public ParameterResolver(ImmutableMap<String, ITimeValue> customParameters)
+        {
+            this.customParameters = customParameters;
+        }
+
+        public ITimeValue apply(String name)
+        {
+            if(asm.getParameters().containsKey(name))
+            {
+                return asm.getParameters().get(name);
+            }
+            return customParameters.get(name);
+        }
+    }
+
+    private final Gson mbaGson = new GsonBuilder()
+        .registerTypeAdapter(ImmutableList.class, JsonUtils.ImmutableListTypeAdapter.INSTANCE)
+        .registerTypeAdapter(ImmutableMap.class, JsonUtils.ImmutableMapTypeAdapter.INSTANCE)
+        .setPrettyPrinting()
+        .enableComplexMapKeySerialization()
+        .disableHtmlEscaping()
+        .create();
+
+    private final ModelBlockAnimation defaultModelBlockAnimation = new ModelBlockAnimation(ImmutableMap.<String, ImmutableMap<String, float[]>>of(), ImmutableMap.<String, ModelBlockAnimation.MBClip>of());
+
+    public void onResourceManagerReload(IResourceManager manager)
+    {
+        this.manager = manager;
+    }
+}

src/main/java/net/minecraftforge/client/model/animation/AnimationModelBase.java

@@ -0,0 +1,108 @@
+package net.minecraftforge.client.model.animation;
+
+import java.util.List;
+
+import net.minecraft.client.model.ModelBase;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.RenderHelper;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.renderer.block.model.BakedQuad;
+import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
+import net.minecraft.client.resources.model.IBakedModel;
+import net.minecraft.entity.Entity;
+import net.minecraft.init.Blocks;
+import net.minecraft.util.BlockPos;
+import net.minecraft.util.EnumFacing;
+import net.minecraftforge.client.model.IModel;
+import net.minecraftforge.client.model.IModelState;
+import net.minecraftforge.client.model.ModelLoader;
+import net.minecraftforge.client.model.pipeline.VertexLighterFlat;
+import net.minecraftforge.client.model.pipeline.WorldRendererConsumer;
+
+import org.apache.commons.lang3.tuple.Pair;
+import org.lwjgl.opengl.GL11;
+
+/**
+ * ModelBase that works with the Forge model system and animations.
+ * Some quirks are still left, deprecated for the moment.
+ */
+@Deprecated
+public class AnimationModelBase<T extends Entity & IAnimationProvider> extends ModelBase implements IEventHandler<T>
+{
+    private final VertexLighterFlat lighter;
+    private final IModel model;
+
+    public AnimationModelBase(IModel model, VertexLighterFlat lighter)
+    {
+        this.model = model;
+        this.lighter = lighter;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public void render(Entity entity, float limbSwing, float limbSwingSpeed, float timeAlive, float yawHead, float rotationPitch, float scale)
+    {
+        if(!(entity instanceof IAnimationProvider))
+        {
+            throw new ClassCastException("AnimationModelBase expects IAnimationProvider");
+        }
+
+        Pair<IModelState, Iterable<Event>> pair = ((IAnimationProvider)entity).asm().apply(timeAlive / 20);
+        handleEvents((T)entity, timeAlive / 20, pair.getRight());
+        IBakedModel bakedModel = model.bake(pair.getLeft(), DefaultVertexFormats.ITEM, ModelLoader.defaultTextureGetter());
+
+        BlockPos pos = new BlockPos(entity.posX, entity.posY + entity.height, entity.posZ);
+
+        RenderHelper.disableStandardItemLighting();
+        GlStateManager.pushMatrix();
+        GlStateManager.rotate(180, 0, 0, 1);
+        Tessellator tessellator = Tessellator.getInstance();
+        WorldRenderer worldRenderer = tessellator.getWorldRenderer();
+        worldRenderer.begin(GL11.GL_QUADS, DefaultVertexFormats.BLOCK);
+        worldRenderer.setTranslation(-0.5, -1.5, -0.5);
+
+        lighter.setParent(new WorldRendererConsumer(worldRenderer));
+        lighter.setWorld(entity.worldObj);
+        lighter.setBlock(Blocks.air);
+        lighter.setBlockPos(pos);
+        boolean empty = true;
+        List<BakedQuad> quads = bakedModel.getGeneralQuads();
+        if(!quads.isEmpty())
+        {
+            lighter.updateBlockInfo();
+            empty = false;
+            for(BakedQuad quad : quads)
+            {
+                quad.pipe(lighter);
+            }
+        }
+        for(EnumFacing side : EnumFacing.values())
+        {
+            quads = bakedModel.getFaceQuads(side);
+            if(!quads.isEmpty())
+            {
+                if(empty) lighter.updateBlockInfo();
+                empty = false;
+                for(BakedQuad quad : quads)
+                {
+                    quad.pipe(lighter);
+                }
+            }
+        }
+
+        // debug quad
+        /*worldRenderer.pos(0, 1, 0).color(0xFF, 0xFF, 0xFF, 0xFF).tex(0, 0).lightmap(240, 0).endVertex();
+        worldRenderer.pos(0, 1, 1).color(0xFF, 0xFF, 0xFF, 0xFF).tex(0, 1).lightmap(240, 0).endVertex();
+        worldRenderer.pos(1, 1, 1).color(0xFF, 0xFF, 0xFF, 0xFF).tex(1, 1).lightmap(240, 0).endVertex();
+        worldRenderer.pos(1, 1, 0).color(0xFF, 0xFF, 0xFF, 0xFF).tex(1, 0).lightmap(240, 0).endVertex();*/
+
+        worldRenderer.setTranslation(0, 0, 0);
+
+        tessellator.draw();
+        GlStateManager.popMatrix();
+        RenderHelper.enableStandardItemLighting();
+    }
+
+    public void handleEvents(T instance, float time, Iterable<Event> pastEvents) {}
+}

src/main/java/net/minecraftforge/client/model/animation/AnimationStateMachine.java

@@ -0,0 +1,169 @@
+package net.minecraftforge.client.model.animation;
+
+import java.util.concurrent.TimeUnit;
+
+import net.minecraftforge.client.model.IModelState;
+import net.minecraftforge.common.model.animation.IAnimationStateMachine;
+
+import org.apache.commons.lang3.tuple.Pair;
+import org.apache.commons.lang3.tuple.Triple;
+
+import com.google.common.base.Predicate;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Iterables;
+import com.google.gson.JsonParseException;
+import com.google.gson.annotations.SerializedName;
+
+class AnimationStateMachine implements IAnimationStateMachine
+{
+    private final ImmutableMap<String, ITimeValue> parameters;
+    private final ImmutableMap<String, IClip> clips;
+    private final ImmutableList<String> states;
+    private final ImmutableMap<String, String> transitions;
+    @SerializedName("start_state")
+    private final String startState;
+
+    private transient boolean shouldHandleSpecialEvents;
+    private transient String currentStateName;
+    private transient IClip currentState;
+    private transient float lastPollTime;
+
+    private static final LoadingCache<Triple<? extends IClip, Float, Float>, Pair<IModelState, Iterable<Event>>> clipCache = CacheBuilder.newBuilder()
+        .maximumSize(100)
+        .expireAfterWrite(100, TimeUnit.MILLISECONDS)
+        .build(new CacheLoader<Triple<? extends IClip, Float, Float>, Pair<IModelState, Iterable<Event>>>()
+        {
+            public Pair<IModelState, Iterable<Event>> load(Triple<? extends IClip, Float, Float> key) throws Exception
+            {
+                return Clips.apply(key.getLeft(), key.getMiddle(), key.getRight());
+            }
+        });
+
+    public AnimationStateMachine(ImmutableMap<String, ITimeValue> parameters, ImmutableMap<String, IClip> clips, ImmutableList<String> states, ImmutableMap<String, String> transitions, String startState)
+    {
+        this.parameters = parameters;
+        this.clips = clips;
+        this.states = states;
+        this.transitions = transitions;
+        this.startState = startState;
+    }
+
+    /**
+     * Used during resolution of parameter references.
+     */
+    ImmutableMap<String, ITimeValue> getParameters()
+    {
+        return parameters;
+    }
+
+    /**
+     * Used during resolution of clip references.
+     */
+    ImmutableMap<String, IClip> getClips()
+    {
+        return clips;
+    }
+
+    /**
+     * post-loading initialization hook.
+     */
+    void initialize()
+    {
+        if(parameters == null)
+        {
+            throw new JsonParseException("Animation State Machine should contain \"parameters\" key.");
+        }
+        if(clips == null)
+        {
+            throw new JsonParseException("Animation State Machine should contain \"clips\" key.");
+        }
+        if(states == null)
+        {
+            throw new JsonParseException("Animation State Machine should contain \"states\" key.");
+        }
+        if(transitions == null)
+        {
+            throw new JsonParseException("Animation State Machine should contain \"transitions\" key.");
+        }
+        shouldHandleSpecialEvents = true;
+        lastPollTime = Float.NEGATIVE_INFINITY;
+        // setting the starting state
+        IClip state = clips.get(startState);
+        if(!clips.containsKey(startState) || !states.contains(startState))
+        {
+            throw new IllegalStateException("unknown state: " + startState);
+        }
+        currentStateName = startState;
+        currentState = state;
+    }
+
+    public Pair<IModelState, Iterable<Event>> apply(float time)
+    {
+        if(lastPollTime == Float.NEGATIVE_INFINITY)
+        {
+            lastPollTime = time;
+        }
+        Pair<IModelState, Iterable<Event>> pair = clipCache.getUnchecked(Triple.of(currentState, lastPollTime, time));
+        lastPollTime = time;
+        boolean shouldFilter = false;
+        if(shouldHandleSpecialEvents)
+        {
+            for(Event event : ImmutableList.copyOf(pair.getRight()).reverse())
+            {
+                if(event.event().startsWith("!"))
+                {
+                    shouldFilter = true;
+                    if(event.event().startsWith("!transition:"))
+                    {
+                        String newState = event.event().substring("!transition:".length());
+                        transition(newState);
+                    }
+                    else
+                    {
+                        System.out.println("Unknown special event \"" + event.event() + "\", ignoring");
+                    }
+                }
+            }
+        }
+        if(!shouldFilter)
+        {
+            return pair;
+        }
+        return Pair.of(pair.getLeft(), Iterables.filter(pair.getRight(), new Predicate<Event>()
+        {
+            public boolean apply(Event event)
+            {
+                return !event.event().startsWith("!");
+            }
+        }));
+    }
+
+    public void transition(String newState)
+    {
+        IClip nc = clips.get(newState);
+        if(!clips.containsKey(newState) || !states.contains(newState))
+        {
+            throw new IllegalStateException("unknown state: " + newState);
+        }
+        if(!transitions.get(currentStateName).equals(newState))
+        {
+            throw new IllegalArgumentException("no transition from current clip \"" + currentStateName + "\" to the clip \"" + newState + "\" found.");
+        }
+        currentStateName = newState;
+        currentState = nc;
+    }
+
+    public String currentState()
+    {
+        return currentStateName;
+    }
+
+    public void shouldHandleSpecialEvents(boolean value)
+    {
+        shouldHandleSpecialEvents = true;
+    }
+}

src/main/java/net/minecraftforge/client/model/animation/AnimationTESR.java

@@ -0,0 +1,79 @@
+package net.minecraftforge.client.model.animation;
+
+import java.util.concurrent.TimeUnit;
+
+import net.minecraft.block.state.IBlockState;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.BlockRendererDispatcher;
+import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.resources.model.IBakedModel;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.BlockPos;
+import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.client.MinecraftForgeClient;
+import net.minecraftforge.client.model.IModelState;
+import net.minecraftforge.client.model.ISmartBlockModel;
+import net.minecraftforge.common.property.IExtendedBlockState;
+import net.minecraftforge.common.property.Properties;
+
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
+
+/**
+ * Generic TileEntitySpecialRenderer that works with the Forge model system and animations.
+ */
+public class AnimationTESR<T extends TileEntity & IAnimationProvider> extends FastTESR<T> implements IEventHandler<T>
+{
+    protected static BlockRendererDispatcher blockRenderer;
+
+    protected static final LoadingCache<Pair<IExtendedBlockState, IModelState>, IBakedModel> modelCache = CacheBuilder.newBuilder().maximumSize(10).expireAfterWrite(100, TimeUnit.MILLISECONDS).build(new CacheLoader<Pair<IExtendedBlockState, IModelState>, IBakedModel>()
+    {
+        public IBakedModel load(Pair<IExtendedBlockState, IModelState> key) throws Exception
+        {
+            IBakedModel model = blockRenderer.getBlockModelShapes().getModelForState(key.getLeft().getClean());
+            if(model instanceof ISmartBlockModel)
+            {
+                model = ((ISmartBlockModel)model).handleBlockState(key.getLeft().withProperty(Properties.AnimationProperty, key.getRight()));
+            }
+            return model;
+        }
+    });
+
+    protected static IBakedModel getModel(IExtendedBlockState state, IModelState modelState)
+    {
+        return modelCache.getUnchecked(Pair.of(state, modelState));
+    }
+
+    public void renderTileEntityFast(T te, double x, double y, double z, float partialTick, int breakStage, WorldRenderer renderer)
+    {
+        if(blockRenderer == null) blockRenderer = Minecraft.getMinecraft().getBlockRendererDispatcher();
+        BlockPos pos = te.getPos();
+        IBlockAccess world = MinecraftForgeClient.getRegionRenderCache(te.getWorld(), pos);
+        IBlockState state = world.getBlockState(pos);
+        if(state.getPropertyNames().contains(Properties.StaticProperty))
+        {
+            state = state.withProperty(Properties.StaticProperty, false);
+        }
+        if(state instanceof IExtendedBlockState)
+        {
+            IExtendedBlockState exState = (IExtendedBlockState)state;
+            if(exState.getUnlistedNames().contains(Properties.AnimationProperty))
+            {
+                float time = Animation.getWorldTime(getWorld(), partialTick);
+                Pair<IModelState, Iterable<Event>> pair = te.asm().apply(time);
+                handleEvents(te, time, pair.getRight());
+
+                IBakedModel model = getModel(exState, pair.getLeft());
+
+                renderer.setTranslation(x - pos.getX(), y - pos.getY(), z - pos.getZ());
+
+                blockRenderer.getBlockModelRenderer().renderModel(world, model, state, pos, renderer, false);
+            }
+        }
+    }
+
+    public void handleEvents(T te, float time, Iterable<Event> pastEvents) {}
+}

src/main/java/net/minecraftforge/client/model/animation/Clips.java

@@ -0,0 +1,538 @@
+package net.minecraftforge.client.model.animation;
+
+import java.io.IOException;
+
+import net.minecraft.client.resources.model.ModelResourceLocation;
+import net.minecraft.util.IStringSerializable;
+import net.minecraft.util.MathHelper;
+import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.client.model.IModel;
+import net.minecraftforge.client.model.IModelPart;
+import net.minecraftforge.client.model.IModelState;
+import net.minecraftforge.client.model.ModelLoaderRegistry;
+import net.minecraftforge.client.model.TRSRTransformation;
+import net.minecraftforge.fml.common.FMLLog;
+
+import org.apache.commons.lang3.NotImplementedException;
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.google.common.base.Function;
+import com.google.common.base.Objects;
+import com.google.common.base.Optional;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.Ordering;
+import com.google.gson.Gson;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+
+/**
+ * Various implementations of IClip, and utility methods.
+ */
+public final class Clips
+{
+    /**
+     * Clip that does nothing.
+     */
+    public static enum IdentityClip implements IClip, IStringSerializable
+    {
+        instance;
+
+        public IJointClip apply(IJoint joint)
+        {
+            return JointClips.IdentityJointClip.instance;
+        }
+
+        public Iterable<Event> pastEvents(float lastPollTime, float time)
+        {
+            return ImmutableSet.<Event>of();
+        }
+
+        public String getName()
+        {
+            return "identity";
+        }
+    }
+
+    /**
+     * Retrieves the clip from the model.
+     */
+    public static IClip getModelClipNode(ResourceLocation modelLocation, String clipName)
+    {
+        IModel model;
+        try
+        {
+            model = ModelLoaderRegistry.getModel(modelLocation);
+            if(model instanceof IAnimatedModel)
+            {
+                Optional<? extends IClip> clip = ((IAnimatedModel)model).getClip(clipName);
+                if(clip.isPresent())
+                {
+                    return new ModelClip(clip.get(), modelLocation, clipName);
+                }
+                FMLLog.getLogger().error("Unable to find clip " + clipName + " in the model " + modelLocation);
+            }
+        }
+        catch (IOException e)
+        {
+            FMLLog.getLogger().error("Unable to load model" + modelLocation + " while loading clip " + clipName, e);
+        }
+        // FIXME: missing clip?
+        return new ModelClip(IdentityClip.instance, modelLocation, clipName);
+    }
+
+    /**
+     * Wrapper for model clips; useful for debugging and serialization;
+     */
+    public static final class ModelClip implements IClip
+    {
+        private final IClip childClip;
+        private final ResourceLocation modelLocation;
+        private final String clipName;
+
+        public ModelClip(IClip childClip, ResourceLocation modelLocation, String clipName)
+        {
+            this.childClip = childClip;
+            this.modelLocation = modelLocation;
+            this.clipName = clipName;
+        }
+
+        public IJointClip apply(IJoint joint)
+        {
+            return childClip.apply(joint);
+        }
+
+        public Iterable<Event> pastEvents(float lastPollTime, float time)
+        {
+            return childClip.pastEvents(lastPollTime, time);
+        }
+
+        @Override
+        public int hashCode()
+        {
+            return Objects.hashCode(modelLocation, clipName);
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            ModelClip other = (ModelClip) obj;
+            return Objects.equal(modelLocation, other.modelLocation) && Objects.equal(clipName, other.clipName);
+        }
+    }
+
+    /**
+     * Clip with custom parameterization of the time.
+     */
+    public static final class TimeClip implements IClip
+    {
+        private final IClip childClip;
+        private final ITimeValue time;
+
+        public TimeClip(IClip childClip, ITimeValue time)
+        {
+            this.childClip = childClip;
+            this.time = time;
+        }
+
+        public IJointClip apply(final IJoint joint)
+        {
+            return new IJointClip()
+            {
+                private final IJointClip parent = childClip.apply(joint);
+                public TRSRTransformation apply(float time)
+                {
+                    return parent.apply(TimeClip.this.time.apply(time));
+                }
+            };
+        }
+
+        public Iterable<Event> pastEvents(float lastPollTime, float time)
+        {
+            return childClip.pastEvents(this.time.apply(lastPollTime), this.time.apply(time));
+        }
+
+        @Override
+        public int hashCode()
+        {
+            return Objects.hashCode(childClip, time);
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            TimeClip other = (TimeClip) obj;
+            return Objects.equal(childClip, other.childClip) && Objects.equal(time, other.time);
+        }
+    }
+
+    /**
+     * Spherical linear blend between 2 clips.
+     */
+    public static final class SlerpClip implements IClip
+    {
+        private final IClip from;
+        private final IClip to;
+        private final ITimeValue input;
+        private final ITimeValue progress;
+
+        public SlerpClip(IClip from, IClip to, ITimeValue input, ITimeValue progress)
+        {
+            this.from = from;
+            this.to = to;
+            this.input = input;
+            this.progress = progress;
+        }
+
+        public IJointClip apply(IJoint joint)
+        {
+            IJointClip fromClip = from.apply(joint);
+            IJointClip toClip = to.apply(joint);
+            return blendClips(joint, fromClip, toClip, input, progress);
+        }
+
+        public Iterable<Event> pastEvents(float lastPollTime, float time)
+        {
+            float clipLastPollTime = input.apply(lastPollTime);
+            float clipTime = input.apply(time);
+            return Iterables.mergeSorted(ImmutableSet.of(
+                from.pastEvents(clipLastPollTime, clipTime),
+                to.pastEvents(clipLastPollTime, clipTime)
+            ), Ordering.<Event>natural());
+        }
+
+        @Override
+        public int hashCode()
+        {
+            return Objects.hashCode(from, to, input, progress);
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            SlerpClip other = (SlerpClip) obj;
+            return Objects.equal(from, other.from) &&
+                Objects.equal(to, other.to) &&
+                Objects.equal(input, other.input) &&
+                Objects.equal(progress, other.progress);
+        }
+    }
+
+    /*public static class AdditiveLerpClip implements IClip
+    {
+        private final IClip base;
+        private final IClip add;
+        private final IParameter progress;
+
+        public AdditiveLerpClip(IClip base, IClip add, IParameter progress)
+        {
+            this.base = base;
+            this.add = add;
+            this.progress = progress;
+        }
+
+        public IJointClip apply(IJoint joint)
+        {
+            throw new NotImplementedException("AdditiveLerpClip.apply");
+        }
+    }*/
+
+    private static IJointClip blendClips(final IJoint joint, final IJointClip fromClip, final IJointClip toClip, final ITimeValue input, final ITimeValue progress)
+    {
+        return new IJointClip()
+        {
+            public TRSRTransformation apply(float time)
+            {
+                float clipTime = input.apply(time);
+                return fromClip.apply(clipTime).slerp(toClip.apply(clipTime), MathHelper.clamp_float(progress.apply(time), 0, 1));
+            }
+        };
+    }
+
+    /**
+     * IModelState wrapper for a Clip, sampled at specified time.
+     */
+    public static Pair<IModelState, Iterable<Event>> apply(final IClip clip, final float lastPollTime, final float time)
+    {
+        return Pair.<IModelState, Iterable<Event>>of(new IModelState()
+        {
+            public Optional<TRSRTransformation> apply(Optional<? extends IModelPart> part)
+            {
+                if(!part.isPresent() || !(part.get() instanceof IJoint))
+                {
+                    return Optional.absent();
+                }
+                IJoint joint = (IJoint)part.get();
+                if(!joint.getParent().isPresent())
+                {
+                    return Optional.of(clip.apply(joint).apply(time).compose(joint.getInvBindPose()));
+                }
+                return Optional.of(clip.apply(joint.getParent().get()).apply(time).compose(clip.apply(joint).apply(time)).compose(joint.getInvBindPose()));
+            }
+        }, clip.pastEvents(lastPollTime, time));
+    }
+
+    /**
+     * Clip + Event, triggers when parameter becomes non-negative.
+     */
+    public static final class TriggerClip implements IClip
+    {
+        private final IClip clip;
+        private final ITimeValue parameter;
+        private final String event;
+
+        public TriggerClip(IClip clip, ITimeValue parameter, String event)
+        {
+            this.clip = clip;
+            this.parameter = parameter;
+            this.event = event;
+        }
+
+        public IJointClip apply(IJoint joint)
+        {
+            return clip.apply(joint);
+        }
+
+        public Iterable<Event> pastEvents(float lastPollTime, float time)
+        {
+            if(parameter.apply(lastPollTime) < 0 && parameter.apply(time) >= 0)
+            {
+                return Iterables.mergeSorted(ImmutableSet.of(
+                    clip.pastEvents(lastPollTime, time),
+                    ImmutableSet.of(new Event(event, 0))
+                ), Ordering.<Event>natural());
+            }
+            return clip.pastEvents(lastPollTime, time);
+        }
+    }
+
+    /**
+      * Reference to another clip.
+      * Should only exist during debugging.
+      */
+    public static final class ClipReference implements IClip, IStringSerializable
+    {
+        private final String clipName;
+        private final Function<String, IClip> clipResolver;
+        private IClip clip;
+
+        public ClipReference(String clipName, Function<String, IClip> clipResolver)
+        {
+            this.clipName = clipName;
+            this.clipResolver = clipResolver;
+        }
+
+        private void resolve()
+        {
+            if(clip == null)
+            {
+                if(clipResolver != null)
+                {
+                    clip = clipResolver.apply(clipName);
+                }
+                if(clip == null)
+                {
+                    throw new IllegalArgumentException("Couldn't resolve clip " + clipName);
+                }
+            }
+        }
+
+        public IJointClip apply(final IJoint joint)
+        {
+            resolve();
+            return clip.apply(joint);
+        }
+
+        public Iterable<Event> pastEvents(float lastPollTime, float time)
+        {
+            resolve();
+            return clip.pastEvents(lastPollTime, time);
+        }
+
+        public String getName()
+        {
+            return clipName;
+        }
+
+        @Override
+        public int hashCode()
+        {
+            resolve();
+            return clip.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            ClipReference other = (ClipReference) obj;
+            resolve();
+            other.resolve();
+            return Objects.equal(clip, other.clip);
+        }
+    }
+
+    public static enum CommonClipTypeAdapterFactory implements TypeAdapterFactory
+    {
+        INSTANCE;
+
+        private final ThreadLocal<Function<String, IClip>> clipResolver = new ThreadLocal<Function<String, IClip>>();
+
+        public void setClipResolver(Function<String, IClip> clipResolver)
+        {
+            this.clipResolver.set(clipResolver);
+        }
+
+        @SuppressWarnings("unchecked")
+        public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type)
+        {
+            if(type.getRawType() != IClip.class)
+            {
+                return null;
+            }
+
+            final TypeAdapter<ITimeValue> parameterAdapter = gson.getAdapter(ITimeValue.class);
+
+            return (TypeAdapter<T>)new TypeAdapter<IClip>()
+            {
+                public void write(JsonWriter out, IClip clip) throws IOException
+                {
+                    // IdentityClip + ClipReference
+                    if(clip instanceof IStringSerializable)
+                    {
+                        out.value("#" + ((IStringSerializable)clip).getName());
+                        return;
+                    }
+                    else if(clip instanceof TimeClip)
+                    {
+                        out.beginArray();
+                        out.value("apply");
+                        TimeClip timeClip = (TimeClip)clip;
+                        write(out, timeClip.childClip);
+                        parameterAdapter.write(out, timeClip.time);
+                        out.endArray();
+                        return;
+                    }
+                    else if(clip instanceof SlerpClip)
+                    {
+                        out.beginArray();
+                        out.value("slerp");
+                        SlerpClip slerpClip = (SlerpClip)clip;
+                        write(out, slerpClip.from);
+                        write(out, slerpClip.to);
+                        parameterAdapter.write(out, slerpClip.input);
+                        parameterAdapter.write(out, slerpClip.progress);
+                        out.endArray();
+                        return;
+                    }
+                    else if(clip instanceof TriggerClip)
+                    {
+                        out.beginArray();
+                        out.value("trigger_positive");
+                        TriggerClip triggerClip = (TriggerClip)clip;
+                        write(out, triggerClip.clip);
+                        parameterAdapter.write(out, triggerClip.parameter);
+                        out.value(triggerClip.event);
+                        out.endArray();
+                        return;
+                    }
+                    else if(clip instanceof ModelClip)
+                    {
+                        ModelClip modelClip = (ModelClip)clip;
+                        out.value(modelClip.modelLocation + "@" + modelClip.clipName);
+                        return;
+                    }
+                    // TODO custom clip writing?
+                    throw new NotImplementedException("unknown Clip to json: " + clip);
+                }
+
+                public IClip read(JsonReader in) throws IOException
+                {
+                    switch(in.peek())
+                    {
+                        case BEGIN_ARRAY:
+                            in.beginArray();
+                            String type = in.nextString();
+                            IClip clip;
+                            // TimeClip
+                            if("apply".equals(type))
+                            {
+                                clip = new TimeClip(read(in), parameterAdapter.read(in));
+                            }
+                            else if("slerp".equals(type))
+                            {
+                                clip = new SlerpClip(read(in), read(in), parameterAdapter.read(in), parameterAdapter.read(in));
+                            }
+                            else if("trigger_positive".equals(type))
+                            {
+                                clip = new TriggerClip(read(in), parameterAdapter.read(in), in.nextString());
+                            }
+                            else
+                            {
+                                throw new IOException("Unknown Clip type \"" + type + "\"");
+                            }
+                            in.endArray();
+                            return clip;
+                        case STRING:
+                            String string = in.nextString();
+                            // IdentityClip
+                            if(string.equals("#identity"))
+                            {
+                                return IdentityClip.instance;
+                            }
+                            // Clip reference
+                            if(string.startsWith("#"))
+                            {
+                                return new ClipReference(string.substring(1), clipResolver.get());
+                            }
+                            // ModelClip
+                            else
+                            {
+                                int at = string.lastIndexOf('@');
+                                String location = string.substring(0, at);
+                                String clipName = string.substring(at + 1, string.length());
+                                ResourceLocation model;
+                                if(location.indexOf('#') != -1)
+                                {
+                                    model = new ModelResourceLocation(location);
+                                }
+                                else
+                                {
+                                    model = new ResourceLocation(location);
+                                }
+                                return getModelClipNode(model, clipName);
+                            }
+                        default:
+                            throw new IOException("expected Clip, got " + in.peek());
+                    }
+                }
+            };
+        }
+    }
+}

src/main/java/net/minecraftforge/client/model/animation/Event.java

@@ -0,0 +1,46 @@
+package net.minecraftforge.client.model.animation;
+
+import com.google.common.base.Objects;
+
+
+/**
+ * Event stored in the clip
+ */
+public final class Event implements Comparable<Event>
+{
+    private final String event;
+    private final float offset;
+
+    public Event(String event, float offset)
+    {
+        this.event = event;
+        this.offset = offset;
+    }
+
+    /**
+     * @return the name of the event.
+     */
+    public String event()
+    {
+        return event;
+    }
+
+    /**
+     * @return how long ago the event happened, relative to the next event / first query time
+     */
+    public float offset()
+    {
+        return offset;
+    }
+
+    public int compareTo(Event event)
+    {
+        return new Float(offset).compareTo(event.offset);
+    }
+
+    @Override
+    public String toString()
+    {
+        return Objects.toStringHelper(getClass()).add("event", event).add("offset", offset).toString();
+    }
+}

src/main/java/net/minecraftforge/client/model/animation/FastTESR.java

@@ -0,0 +1,49 @@
+package net.minecraftforge.client.model.animation;
+
+import org.lwjgl.opengl.GL11;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.RenderHelper;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.renderer.texture.TextureMap;
+import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
+import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
+import net.minecraft.tileentity.TileEntity;
+
+public abstract class FastTESR<T extends TileEntity> extends TileEntitySpecialRenderer<T>
+{
+    @Override
+    public final void renderTileEntityAt(T te, double x, double y, double z, float partialTicks, int destroyStage)
+    {
+        Tessellator tessellator = Tessellator.getInstance();
+        WorldRenderer worldRenderer = tessellator.getWorldRenderer();
+        this.bindTexture(TextureMap.locationBlocksTexture);
+        RenderHelper.disableStandardItemLighting();
+        GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
+        GlStateManager.enableBlend();
+        GlStateManager.disableCull();
+
+        if (Minecraft.isAmbientOcclusionEnabled())
+        {
+            GlStateManager.shadeModel(GL11.GL_SMOOTH);
+        }
+        else
+        {
+            GlStateManager.shadeModel(GL11.GL_FLAT);
+        }
+
+        worldRenderer.begin(GL11.GL_QUADS, DefaultVertexFormats.BLOCK);
+
+        renderTileEntityFast(te, x, y, z, partialTicks, destroyStage, worldRenderer);
+        worldRenderer.setTranslation(0, 0, 0);
+
+        tessellator.draw();
+
+        RenderHelper.enableStandardItemLighting();
+    }
+
+    @Override
+    public abstract void renderTileEntityFast(T te, double x, double y, double z, float partialTicks, int destroyStage, WorldRenderer worldRenderer);
+}

src/main/java/net/minecraftforge/client/model/animation/IAnimatedModel.java

@@ -0,0 +1,13 @@
+package net.minecraftforge.client.model.animation;
+
+import net.minecraftforge.client.model.IModel;
+
+import com.google.common.base.Optional;
+
+/**
+ * IModel that has animation data.
+ */
+public interface IAnimatedModel extends IModel
+{
+    Optional<? extends IClip> getClip(String name);
+}

src/main/java/net/minecraftforge/client/model/animation/IAnimationProvider.java

@@ -0,0 +1,12 @@
+package net.minecraftforge.client.model.animation;
+
+import net.minecraftforge.common.model.animation.IAnimationStateMachine;
+
+
+/**
+ * Something that can provide the Animation State Machine, for example and Entity or a Block
+ */
+public interface IAnimationProvider
+{
+    public IAnimationStateMachine asm();
+}

src/main/java/net/minecraftforge/client/model/animation/IClip.java

@@ -0,0 +1,12 @@
+package net.minecraftforge.client.model.animation;
+
+
+/**
+ * Clip for a rigged model.
+ */
+public interface IClip
+{
+    IJointClip apply(IJoint joint);
+
+    Iterable<Event> pastEvents(float lastPollTime, float time);
+}

src/main/java/net/minecraftforge/client/model/animation/IEventHandler.java

@@ -0,0 +1,10 @@
+package net.minecraftforge.client.model.animation;
+
+
+/**
+ * Handler for animation events;
+ */
+public interface IEventHandler<T>
+{
+    void handleEvents(T instance, float time, Iterable<Event> pastEvents);
+}

src/main/java/net/minecraftforge/client/model/animation/IJoint.java

@@ -0,0 +1,16 @@
+package net.minecraftforge.client.model.animation;
+
+import com.google.common.base.Optional;
+
+import net.minecraftforge.client.model.IModelPart;
+import net.minecraftforge.client.model.TRSRTransformation;
+
+/**
+ * Model part that's a part of the hierarchical skeleton.
+ */
+public interface IJoint extends IModelPart
+{
+    TRSRTransformation getInvBindPose();
+
+    Optional<? extends IJoint> getParent();
+}

src/main/java/net/minecraftforge/client/model/animation/IJointClip.java

@@ -0,0 +1,11 @@
+package net.minecraftforge.client.model.animation;
+
+import net.minecraftforge.client.model.TRSRTransformation;
+
+/**
+ * Returns Local joint pose; animation clip for specific model part.
+ */
+public interface IJointClip
+{
+    TRSRTransformation apply(float time);
+}

src/main/java/net/minecraftforge/client/model/animation/ITimeValue.java

@@ -0,0 +1,12 @@
+package net.minecraftforge.client.model.animation;
+
+/**
+ * Time-varying value associated with the animation.
+ * Return value should be constant with the respect to the input and reasonable context (current render frame).
+ * Simplest example is the input time itself.
+ * Unity calls them Parameters, Unreal calls them Variables.
+ */
+public interface ITimeValue
+{
+    public float apply(float input);
+}

src/main/java/net/minecraftforge/client/model/animation/JointClips.java

@@ -0,0 +1,36 @@
+package net.minecraftforge.client.model.animation;
+
+import net.minecraftforge.client.model.TRSRTransformation;
+
+/**
+ * Various implementations of IJointClip.
+ */
+public final class JointClips
+{
+    public static enum IdentityJointClip implements IJointClip
+    {
+        instance;
+
+        public TRSRTransformation apply(float time)
+        {
+            return TRSRTransformation.identity();
+        }
+    }
+
+    public static class NodeJointClip implements IJointClip
+    {
+        private final IJoint child;
+        private final IClip clip;
+
+        public NodeJointClip(IJoint joint, IClip clip)
+        {
+            this.child = joint;
+            this.clip = clip;
+        }
+
+        public TRSRTransformation apply(float time)
+        {
+            return clip.apply(child).apply(time);
+        }
+    }
+}

src/main/java/net/minecraftforge/client/model/animation/ModelBlockAnimation.java

@@ -0,0 +1,509 @@
+package net.minecraftforge.client.model.animation;
+
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.NoSuchElementException;
+import java.util.TreeMap;
+
+import javax.vecmath.AxisAngle4f;
+import javax.vecmath.Matrix4f;
+import javax.vecmath.Quat4f;
+import javax.vecmath.Vector3f;
+
+import net.minecraft.client.renderer.block.model.BlockPart;
+import net.minecraft.util.MathHelper;
+import net.minecraftforge.client.model.IModelState;
+import net.minecraftforge.client.model.TRSRTransformation;
+import net.minecraftforge.client.model.animation.ModelBlockAnimation.Parameter.Interpolation;
+import net.minecraftforge.client.model.animation.ModelBlockAnimation.Parameter.Type;
+import net.minecraftforge.client.model.animation.ModelBlockAnimation.Parameter.Variable;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.ImmutableCollection;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableMultimap;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+import com.google.common.collect.UnmodifiableIterator;
+import com.google.gson.annotations.SerializedName;
+
+public class ModelBlockAnimation
+{
+    private final ImmutableMap<String, ImmutableMap<String, float[]>> joints;
+    private final ImmutableMap<String, MBClip> clips;
+    private transient ImmutableMultimap<Integer, MBJointWeight> jointIndexMap;
+
+    public ModelBlockAnimation(ImmutableMap<String, ImmutableMap<String, float[]>> joints, ImmutableMap<String, MBClip> clips)
+    {
+        this.joints = joints;
+        this.clips = clips;
+    }
+
+    public ImmutableMap<String, MBClip> getClips()
+    {
+        return clips;
+    }
+
+    public ImmutableCollection<MBJointWeight> getJoint(int i)
+    {
+        if(jointIndexMap == null)
+        {
+            ImmutableMultimap.Builder<Integer, MBJointWeight> builder = ImmutableMultimap.builder();
+            for(Map.Entry<String, ImmutableMap<String, float[]>> info : joints.entrySet())
+            {
+                ImmutableMap.Builder<Integer, float[]> weightBuilder = ImmutableMap.builder();
+                for(Map.Entry<String, float[]> e : info.getValue().entrySet())
+                {
+                    weightBuilder.put(Integer.parseInt(e.getKey()), e.getValue());
+                }
+                ImmutableMap<Integer, float[]> weightMap = weightBuilder.build();
+                for(Map.Entry<Integer, float[]> e : weightMap.entrySet())
+                {
+                    builder.put(e.getKey(), new MBJointWeight(info.getKey(), weightMap));
+                }
+            }
+            jointIndexMap = builder.build();
+        }
+        return jointIndexMap.get(i);
+    }
+
+    protected static class MBVariableClip
+    {
+        private final Variable variable;
+        @SuppressWarnings("unused")
+        private final Type type;
+        private final Interpolation interpolation;
+        private final float[] samples;
+
+        public MBVariableClip(Variable variable, Type type, Interpolation interpolation, float[] samples)
+        {
+            this.variable = variable;
+            this.type = type;
+            this.interpolation = interpolation;
+            this.samples = samples;
+        }
+    }
+
+    protected static class MBClip implements IClip
+    {
+        private final boolean loop;
+        @SerializedName("joint_clips")
+        private final ImmutableMap<String, ImmutableList<MBVariableClip>> jointClipsFlat;
+        private transient ImmutableMap<String, MBJointClip> jointClips;
+        @SerializedName("events")
+        private final ImmutableMap<String, String> eventsRaw;
+        private transient TreeMap<Float, Event> events;
+
+        public MBClip(boolean loop, ImmutableMap<String, ImmutableList<MBVariableClip>> clips, ImmutableMap<String, String> events)
+        {
+            this.loop = loop;
+            this.jointClipsFlat = clips;
+            this.eventsRaw = events;
+        }
+
+        private void initialize()
+        {
+            if(jointClips == null)
+            {
+                ImmutableMap.Builder<String, MBJointClip> builder = ImmutableMap.builder();
+                for(Map.Entry<String, ImmutableList<MBVariableClip>> e : jointClipsFlat.entrySet())
+                {
+                    builder.put(e.getKey(), new MBJointClip(loop, e.getValue()));
+                }
+                jointClips = builder.build();
+                events = Maps.newTreeMap();
+                TreeMap<Float, String> times = Maps.newTreeMap();
+                for(String time : eventsRaw.keySet())
+                {
+                    times.put(Float.parseFloat(time), time);
+                }
+                float lastTime = Float.POSITIVE_INFINITY;
+                if(loop)
+                {
+                    lastTime = times.firstKey();
+                }
+                for(Map.Entry<Float, String> entry : times.descendingMap().entrySet())
+                {
+                    float time = entry.getKey();
+                    float offset = lastTime - time;
+                    if(loop)
+                    {
+                        offset = 1 - (1 - offset) % 1;
+                    }
+                    events.put(time, new Event(eventsRaw.get(entry.getValue()), offset));
+                }
+            }
+        }
+
+        @Override
+        public IJointClip apply(IJoint joint)
+        {
+            initialize();
+            if(joint instanceof MBJoint)
+            {
+                MBJoint mbJoint = (MBJoint)joint;
+                //MBJointInfo = jointInfos.
+                MBJointClip clip = jointClips.get(mbJoint.getName());
+                if(clip != null) return clip;
+            }
+            return JointClips.IdentityJointClip.instance;
+        }
+
+        @Override
+        public Iterable<Event> pastEvents(final float lastPollTime, final float time)
+        {
+            initialize();
+            return new Iterable<Event>()
+            {
+                public Iterator<Event> iterator()
+                {
+                    return new UnmodifiableIterator<Event>()
+                    {
+                        private Float curKey;
+                        private Event firstEvent;
+                        private float stopTime;
+                        {
+                            if(lastPollTime >= time)
+                            {
+                                curKey = null;
+                            }
+                            else
+                            {
+                                float fractTime = time - (float)Math.floor(time);
+                                float fractLastTime = lastPollTime - (float)Math.floor(lastPollTime);
+                                // swap if not in order
+                                if(fractLastTime > fractTime)
+                                {
+                                    float tmp = fractTime;
+                                    fractTime = fractLastTime;
+                                    fractLastTime = tmp;
+                                }
+                                // need to wrap around, swap again
+                                if(fractTime - fractLastTime > .5f)
+                                {
+                                    float tmp = fractTime;
+                                    fractTime = fractLastTime;
+                                    fractLastTime = tmp;
+                                }
+
+                                stopTime = fractLastTime;
+
+                                curKey = events.floorKey(fractTime);
+                                if(curKey == null && loop && !events.isEmpty())
+                                {
+                                    curKey = events.lastKey();
+                                }
+                                if(curKey != null)
+                                {
+                                    float checkCurTime = curKey;
+                                    float checkStopTime = stopTime;
+                                    if(checkCurTime >= fractTime) checkCurTime--;
+                                    if(checkStopTime >= fractTime) checkStopTime--;
+                                    float offset = fractTime - checkCurTime;
+                                    Event event = events.get(curKey);
+                                    if(checkCurTime < checkStopTime)
+                                    {
+                                        curKey = null;
+                                    }
+                                    else if(offset != event.offset())
+                                    {
+                                        firstEvent = new Event(event.event(), offset);
+                                    }
+                                }
+                            }
+                        }
+
+                        public boolean hasNext()
+                        {
+                            return curKey != null;
+                        }
+
+                        @Override
+                        public Event next()
+                        {
+                            if(curKey == null)
+                            {
+                                throw new NoSuchElementException();
+                            }
+                            Event event;
+                            if(firstEvent == null)
+                            {
+                                event = events.get(curKey);
+                            }
+                            else
+                            {
+                                event = firstEvent;
+                                firstEvent = null;
+                            }
+                            curKey = events.lowerKey(curKey);
+                            if(curKey == null && loop)
+                            {
+                                curKey = events.lastKey();
+                            }
+                            if(curKey != null)
+                            {
+                                float checkStopTime = stopTime;
+                                while(curKey + events.get(curKey).offset() < checkStopTime) checkStopTime--;
+                                while(curKey + events.get(curKey).offset() >= checkStopTime + 1) checkStopTime++;
+                                if(curKey <= checkStopTime)
+                                {
+                                    curKey = null;
+                                }
+                            }
+                            return event;
+                        }
+                    };
+                }
+            };
+        }
+
+        protected static class MBJointClip implements IJointClip
+        {
+            private final boolean loop;
+            private final ImmutableList<MBVariableClip> variables;
+
+            public MBJointClip(boolean loop, ImmutableList<MBVariableClip> variables)
+            {
+                this.loop = loop;
+                this.variables = variables;
+                EnumSet<Variable> hadVar = Sets.newEnumSet(Collections.<Variable>emptyList(), Variable.class);
+                for(MBVariableClip var : variables)
+                {
+                    if(hadVar.contains(var.variable))
+                    {
+                        throw new IllegalArgumentException("duplicate variable: " + var);
+                    }
+                    hadVar.add(var.variable);
+                }
+            }
+
+            public TRSRTransformation apply(float time)
+            {
+                time -= Math.floor(time);
+                Vector3f translation = new Vector3f(0, 0, 0);
+                Vector3f scale = new Vector3f(1, 1, 1);
+                AxisAngle4f rotation = new AxisAngle4f(0, 0, 0, 0);
+                for(MBVariableClip var : variables)
+                {
+                    int length = loop ? var.samples.length : (var.samples.length - 1);
+                    float timeScaled = time * length;
+                    int s1 = MathHelper.clamp_int((int)Math.round(Math.floor(timeScaled)), 0, length - 1);
+                    float progress = timeScaled - s1;
+                    int s2 = s1 + 1;
+                    if(s2 == length && loop) s2 = 0;
+                    float value = 0;
+                    switch(var.interpolation)
+                    {
+                        case LINEAR:
+                            if(var.variable == Variable.ANGLE)
+                            {
+                                float v1 = var.samples[s1];
+                                float v2 = var.samples[s2];
+                                float diff = ((v2 - v1) % 360 + 540) % 360 - 180;
+                                value = v1 + diff * progress;
+                            }
+                            else
+                            {
+                                value = var.samples[s1] * (1 - progress) + var.samples[s2] * progress;
+                            }
+                            break;
+                        case NEAREST:
+                            value = var.samples[progress < .5f ? s1 : s2];
+                            break;
+                    }
+                    switch(var.variable)
+                    {
+                        case X:
+                            translation.x = value;
+                            break;
+                        case Y:
+                            translation.y = value;
+                            break;
+                        case Z:
+                            translation.z = value;
+                            break;
+                        case XROT:
+                            rotation.x = value;
+                            break;
+                        case YROT:
+                            rotation.y = value;
+                            break;
+                        case ZROT:
+                            rotation.z = value;
+                            break;
+                        case ANGLE:
+                            rotation.angle = (float)Math.toRadians(value);
+                            break;
+                        case SCALE:
+                            scale.x = scale.y = scale.z = value;
+                            break;
+                        case XS:
+                            scale.x = value;
+                            break;
+                        case YS:
+                            scale.y = value;
+                            break;
+                        case ZS:
+                            scale.z = value;
+                            break;
+                    }
+                }
+                Quat4f rot = new Quat4f();
+                rot.set(rotation);
+                return TRSRTransformation.blockCenterToCorner(new TRSRTransformation(translation, rot, scale, null));
+            }
+        }
+    }
+
+    protected static class MBJoint implements IJoint
+    {
+        private final String name;
+        private final TRSRTransformation invBindPose;
+
+        public MBJoint(String name, BlockPart part)
+        {
+            this.name = name;
+            if(part.partRotation != null)
+            {
+                float x = 0, y = 0, z = 0;
+                switch(part.partRotation.axis)
+                {
+                    case X:
+                        x = 1;
+                    case Y:
+                        y = 1;
+                    case Z:
+                        z = 1;
+                }
+                Quat4f rotation = new Quat4f();
+                rotation.set(new AxisAngle4f(x, y, z, 0));
+                Matrix4f m = new TRSRTransformation(
+                    TRSRTransformation.toVecmath(part.partRotation.origin),
+                    rotation,
+                    null,
+                    null).getMatrix();
+                m.invert();
+                invBindPose = new TRSRTransformation(m);
+            }
+            else
+            {
+                invBindPose = TRSRTransformation.identity();
+            }
+        }
+
+        public TRSRTransformation getInvBindPose()
+        {
+            return invBindPose;
+        }
+
+        public Optional<? extends IJoint> getParent()
+        {
+            return Optional.absent();
+        }
+
+        public String getName()
+        {
+            return name;
+        }
+    }
+
+    protected static class MBJointWeight
+    {
+        private final String name;
+        private final ImmutableMap<Integer, float[]> weights;
+
+        public MBJointWeight(String name, ImmutableMap<Integer, float[]> weights)
+        {
+            this.name = name;
+            this.weights = weights;
+        }
+
+        public String getName()
+        {
+            return name;
+        }
+
+        public ImmutableMap<Integer, float[]> getWeights()
+        {
+            return weights;
+        }
+    }
+
+    protected static class Parameter
+    {
+        public static enum Variable
+        {
+            @SerializedName("offset_x")
+            X,
+            @SerializedName("offset_y")
+            Y,
+            @SerializedName("offset_z")
+            Z,
+            @SerializedName("axis_x")
+            XROT,
+            @SerializedName("axis_y")
+            YROT,
+            @SerializedName("axis_z")
+            ZROT,
+            @SerializedName("angle")
+            ANGLE,
+            @SerializedName("scale")
+            SCALE,
+            @SerializedName("scale_x")
+            XS,
+            @SerializedName("scale_y")
+            YS,
+            @SerializedName("scale_z")
+            ZS;
+        }
+
+        public static enum Type
+        {
+            @SerializedName("uniform")
+            UNIFORM;
+        }
+
+        public static enum Interpolation
+        {
+            @SerializedName("linear")
+            LINEAR,
+            @SerializedName("nearest")
+            NEAREST;
+        }
+    }
+
+    public TRSRTransformation getPartTransform(IModelState state, BlockPart part, int i)
+    {
+        ImmutableCollection<MBJointWeight> infos = getJoint(i);
+        if(!infos.isEmpty())
+        {
+            Matrix4f m = new Matrix4f(), tmp;
+            float weight = 0;
+            for(MBJointWeight info : infos)
+            {
+                if(info.getWeights().containsKey(i))
+                {
+                    ModelBlockAnimation.MBJoint joint = new ModelBlockAnimation.MBJoint(info.getName(), part);
+                    Optional<TRSRTransformation> trOp = state.apply(Optional.of(joint));
+                    if(trOp.isPresent() && trOp.get() != TRSRTransformation.identity())
+                    {
+                        float w = info.getWeights().get(i)[0];
+                        tmp = trOp.get().getMatrix();
+                        tmp.mul(w);
+                        m.add(tmp);
+                        weight += w;
+                    }
+                }
+            }
+            if(weight > 1e-5)
+            {
+                m.mul(1f / weight);
+                return new TRSRTransformation(m);
+            }
+        }
+        return null;
+    }
+}

src/main/java/net/minecraftforge/client/model/animation/TimeValues.java

@@ -0,0 +1,370 @@
+package net.minecraftforge.client.model.animation;
+
+import java.io.IOException;
+import java.util.regex.Pattern;
+
+import net.minecraft.util.IStringSerializable;
+
+import com.google.common.base.Function;
+import com.google.common.base.Objects;
+import com.google.common.collect.ImmutableList;
+import com.google.gson.Gson;
+import com.google.gson.TypeAdapter;
+import com.google.gson.TypeAdapterFactory;
+import com.google.gson.reflect.TypeToken;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+
+/**
+ * Various implementations of ITimeValue.
+ */
+public final class TimeValues
+{
+    public static enum IdentityValue implements ITimeValue, IStringSerializable
+    {
+        instance;
+
+        public float apply(float input)
+        {
+            return input;
+        }
+
+        public String getName()
+        {
+            return "identity";
+        }
+    }
+
+    public static final class ConstValue implements ITimeValue
+    {
+        private final float output;
+
+        public ConstValue(float output)
+        {
+            this.output = output;
+        }
+
+        public float apply(float input)
+        {
+            return output;
+        }
+
+        @Override
+        public int hashCode()
+        {
+            return Objects.hashCode(output);
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            ConstValue other = (ConstValue) obj;
+            return output == other.output;
+        }
+    }
+
+    /**
+     * Simple value holder.
+     */
+    public static final class VariableValue implements ITimeValue
+    {
+        private float output;
+
+        public VariableValue(float initialValue)
+        {
+            this.output = initialValue;
+        }
+
+        public void setValue(float newValue)
+        {
+            this.output = newValue;
+        }
+
+        public float apply(float input)
+        {
+            return output;
+        }
+
+        @Override
+        public int hashCode()
+        {
+            return Objects.hashCode(output);
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            VariableValue other = (VariableValue) obj;
+            return output == other.output;
+        }
+    }
+
+    public static final class SimpleExprValue implements ITimeValue
+    {
+        private static final Pattern opsPattern = Pattern.compile("[+\\-*/mMrRfF]+");
+
+        private final String operators;
+        private final ImmutableList<ITimeValue> args;
+
+        public SimpleExprValue(String operators, ImmutableList<ITimeValue> args)
+        {
+            this.operators = operators;
+            this.args = args;
+        }
+
+        public float apply(float input)
+        {
+            float ret = input;
+            for(int i = 0; i < operators.length(); i++)
+            {
+                float arg = args.get(i).apply(input);
+                switch(operators.charAt(i))
+                {
+                    case '+': ret += arg; break;
+                    case '-': ret -= arg; break;
+                    case '*': ret *= arg; break;
+                    case '/': ret /= arg; break;
+                    case 'm': ret = Math.min(ret, arg); break;
+                    case 'M': ret = Math.max(ret, arg); break;
+                    case 'r': ret = (float)Math.floor(ret / arg) * arg; break;
+                    case 'R': ret = (float)Math.ceil(ret / arg) * arg; break;
+                    case 'f': ret -= Math.floor(ret / arg) * arg; break;
+                    case 'F': ret = (float)Math.ceil(ret / arg) * arg - ret; break;
+                }
+            }
+            return ret;
+        }
+
+        @Override
+        public int hashCode()
+        {
+            return Objects.hashCode(operators, args);
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            SimpleExprValue other = (SimpleExprValue) obj;
+            return Objects.equal(operators, other.operators) && Objects.equal(args, other.args);
+        }
+    }
+
+    public static final class CompositionValue implements ITimeValue
+    {
+        private final ITimeValue g;
+        private final ITimeValue f;
+
+        public CompositionValue(ITimeValue g, ITimeValue f)
+        {
+            super();
+            this.g = g;
+            this.f = f;
+        }
+
+        public float apply(float input)
+        {
+            return g.apply(f.apply(input));
+        }
+
+        @Override
+        public int hashCode()
+        {
+            return Objects.hashCode(g, f);
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            CompositionValue other = (CompositionValue) obj;
+            return Objects.equal(g, other.g) && Objects.equal(f, other.f);
+        }
+    }
+
+    public static final class ParameterValue implements ITimeValue, IStringSerializable
+    {
+        private final String parameterName;
+        private final Function<String, ITimeValue> valueResolver;
+        private ITimeValue parameter;
+
+        public ParameterValue(String parameterName, Function<String, ITimeValue> valueResolver)
+        {
+            this.parameterName = parameterName;
+            this.valueResolver = valueResolver;
+        }
+
+        public String getName()
+        {
+            return parameterName;
+        }
+
+        private void resolve()
+        {
+            if(parameter == null)
+            {
+                if(valueResolver != null)
+                {
+                    parameter = valueResolver.apply(parameterName);
+                }
+                if(parameter == null)
+                {
+                    throw new IllegalArgumentException("Couldn't resolve parameter value " + parameterName);
+                }
+            }
+        }
+
+        public float apply(float input)
+        {
+            resolve();
+            return parameter.apply(input);
+        }
+
+        @Override
+        public int hashCode()
+        {
+            resolve();
+            return parameter.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+            if (this == obj)
+                return true;
+            if (obj == null)
+                return false;
+            if (getClass() != obj.getClass())
+                return false;
+            ParameterValue other = (ParameterValue) obj;
+            resolve();
+            other.resolve();
+            return Objects.equal(parameter, other.parameter);
+        }
+    }
+
+    public static enum CommonTimeValueTypeAdapterFactory implements TypeAdapterFactory
+    {
+        INSTANCE;
+
+        private final ThreadLocal<Function<String, ITimeValue>> valueResolver = new ThreadLocal<Function<String, ITimeValue>>();
+
+        public void setValueResolver(Function<String, ITimeValue> valueResolver)
+        {
+            this.valueResolver.set(valueResolver);
+        }
+
+        @SuppressWarnings("unchecked")
+        public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type)
+        {
+            if(type.getRawType() != ITimeValue.class)
+            {
+                return null;
+            }
+
+            return (TypeAdapter<T>)new TypeAdapter<ITimeValue>()
+            {
+                public void write(JsonWriter out, ITimeValue parameter) throws IOException
+                {
+                    if(parameter instanceof ConstValue)
+                    {
+                        out.value(((ConstValue)parameter).output);
+                    }
+                    else if(parameter instanceof SimpleExprValue)
+                    {
+                        SimpleExprValue p = (SimpleExprValue)parameter;
+                        out.beginArray();
+                        out.value(p.operators);
+                        for(ITimeValue v : p.args)
+                        {
+                            write(out, v);
+                        }
+                        out.endArray();
+                    }
+                    else if(parameter instanceof CompositionValue)
+                    {
+                        CompositionValue p = (CompositionValue)parameter;
+                        out.beginArray();
+                        out.value("compose");
+                        write(out, p.g);
+                        write(out, p.f);
+                        out.endArray();
+                    }
+                    else if(parameter instanceof IStringSerializable)
+                    {
+                        out.value("#" + ((IStringSerializable)parameter).getName());
+                    }
+                }
+
+                public ITimeValue read(JsonReader in) throws IOException
+                {
+                    switch(in.peek())
+                    {
+                    case NUMBER:
+                        return new ConstValue((float)in.nextDouble());
+                    case BEGIN_ARRAY:
+                        in.beginArray();
+                        String type = in.nextString();
+                        ITimeValue p;
+                        if(SimpleExprValue.opsPattern.matcher(type).matches())
+                        {
+                            ImmutableList.Builder<ITimeValue> builder = ImmutableList.builder();
+                            while(in.peek() != JsonToken.END_ARRAY)
+                            {
+                                builder.add(read(in));
+                            }
+                            p = new SimpleExprValue(type, builder.build());
+                        }
+                        else if("compose".equals(type))
+                        {
+                            p = new CompositionValue(read(in), read(in));
+                        }
+                        else
+                        {
+                            throw new IOException("Unknown TimeValue type \"" + type + "\"");
+                        }
+                        in.endArray();
+                        return p;
+                    case STRING:
+                        String string = in.nextString();
+                        if(string.equals("#identity"))
+                        {
+                            return IdentityValue.instance;
+                        }
+                        if(!string.startsWith("#"))
+                        {
+                            throw new IOException("Expected TimeValue reference, got \"" + string + "\"");
+                        }
+                        // User Parameter TimeValue
+                        return new ParameterValue(string.substring(1), valueResolver.get());
+                    default:
+                        throw new IOException("Expected TimeValue, got " + in.peek());
+                    }
+                }
+            };
+        }
+    }
+}

src/main/java/net/minecraftforge/client/model/b3d/B3DClip.java

@@ -0,0 +1,80 @@
+package net.minecraftforge.client.model.b3d;
+
+import net.minecraftforge.client.model.TRSRTransformation;
+import net.minecraftforge.client.model.animation.Event;
+import net.minecraftforge.client.model.animation.IClip;
+import net.minecraftforge.client.model.animation.IJoint;
+import net.minecraftforge.client.model.animation.IJointClip;
+import net.minecraftforge.client.model.animation.JointClips;
+import net.minecraftforge.client.model.b3d.B3DLoader.NodeJoint;
+import net.minecraftforge.client.model.b3d.B3DModel.Key;
+import net.minecraftforge.client.model.b3d.B3DModel.Node;
+
+import com.google.common.collect.ImmutableSet;
+
+// FIXME: is this fast enough?
+public enum B3DClip implements IClip
+{
+    instance;
+
+    public IJointClip apply(final IJoint joint)
+    {
+        if(!(joint instanceof NodeJoint))
+        {
+            return JointClips.IdentityJointClip.instance;
+        }
+        return new NodeClip(((NodeJoint)joint).getNode());
+    }
+
+    public Iterable<Event> pastEvents(float lastPollTime, float time)
+    {
+        return ImmutableSet.<Event>of();
+    }
+
+    protected static class NodeClip implements IJointClip
+    {
+        private final Node<?> node;
+
+        public NodeClip(Node<?> node)
+        {
+            this.node = node;
+        }
+
+        public TRSRTransformation apply(float time)
+        {
+            TRSRTransformation ret = TRSRTransformation.identity();
+            if(node.getAnimation() == null)
+            {
+                return ret.compose(new TRSRTransformation(node.getPos(), node.getRot(), node.getScale(), null));
+            }
+            int start = Math.max(1, (int)Math.round(Math.floor(time)));
+            int end = Math.min(start + 1, (int)Math.round(Math.ceil(time)));
+            float progress = time - (float)Math.floor(time);
+            Key keyStart = node.getAnimation().getKeys().get(start, node);
+            Key keyEnd = node.getAnimation().getKeys().get(end, node);
+            TRSRTransformation startTr = keyStart == null ? null : new TRSRTransformation(keyStart.getPos(), keyStart.getRot(),keyStart.getScale(), null);
+            TRSRTransformation endTr = keyEnd == null ? null : new TRSRTransformation(keyEnd.getPos(), keyEnd.getRot(),keyEnd.getScale(), null);
+            if(keyStart == null)
+            {
+                if(keyEnd == null)
+                {
+                    ret = ret.compose(new TRSRTransformation(node.getPos(), node.getRot(), node.getScale(), null));
+                }
+                // TODO animated TRSR for speed?
+                else
+                {
+                    ret = ret.compose(endTr);
+                }
+            }
+            else if(progress < 1e-5 || keyEnd == null)
+            {
+                ret = ret.compose(startTr);
+            }
+            else
+            {
+                ret = ret.compose(startTr.slerp(endTr, progress));
+            }
+            return ret;
+        }
+    }
+}

src/main/java/net/minecraftforge/client/model/b3d/B3DLoader.java

@@ -38,7 +38,11 @@ import net.minecraftforge.client.model.ISmartBlockModel;
 import net.minecraftforge.client.model.ISmartItemModel;
 import net.minecraftforge.client.model.ModelLoader;
 import net.minecraftforge.client.model.ModelLoaderRegistry;
+import net.minecraftforge.client.model.ModelStateComposition;
 import net.minecraftforge.client.model.TRSRTransformation;
+import net.minecraftforge.client.model.animation.IClip;
+import net.minecraftforge.client.model.animation.IAnimatedModel;
+import net.minecraftforge.client.model.animation.IJoint;
 import net.minecraftforge.client.model.b3d.B3DModel.Animation;
 import net.minecraftforge.client.model.b3d.B3DModel.Face;
 import net.minecraftforge.client.model.b3d.B3DModel.IKind;
@@ -51,6 +55,7 @@ import net.minecraftforge.client.model.pipeline.LightUtil;
 import net.minecraftforge.client.model.pipeline.UnpackedBakedQuad;
 import net.minecraftforge.common.property.IExtendedBlockState;
 import net.minecraftforge.common.property.IUnlistedProperty;
+import net.minecraftforge.common.property.Properties;
 import net.minecraftforge.fml.common.FMLLog;
 
 import org.apache.commons.lang3.tuple.Pair;
@@ -366,7 +371,7 @@ public class B3DLoader implements ICustomModelLoader
         }
     }
 
-    public static class NodeJoint implements IModelPart
+    public static class NodeJoint implements IJoint
     {
         private final Node<?> node;
 
@@ -553,11 +558,6 @@ public class B3DLoader implements ICustomModelLoader
             return new BakedWrapper(getNode(), state, format, meshes, builder.build());
         }
 
-        public B3DState getDefaultState()
-        {
-            return new B3DState(getNode().getAnimation(), 1);
-        }
-
         public ResourceLocation getLocation()
         {
             return location;
@@ -619,8 +619,15 @@ public class B3DLoader implements ICustomModelLoader
         {
             return this;
         }
+
+        @Override
+        public IModelState getDefaultState()
+        {
+            return new B3DState(getNode().getAnimation(), 1);
+        }
     }
-    public static class ModelWrapper implements IRetexturableModel, IModelCustomData
+
+    public static class ModelWrapper implements IRetexturableModel, IModelCustomData, IAnimatedModel
     {
         private final ResourceLocation modelLocation;
         private final B3DModel model;
@@ -701,12 +708,6 @@ public class B3DLoader implements ICustomModelLoader
             return new BakedWrapper(model.getRoot(), state, format, meshes, builder.build());
         }
 
-        @Override
-        public IModelState getDefaultState()
-        {
-            return new B3DState(model.getRoot().getAnimation(), defaultKey, defaultKey, 0);
-        }
-
         @Override
         public IModel retexture(ImmutableMap<String, String> textures)
         {
@@ -777,6 +778,20 @@ public class B3DLoader implements ICustomModelLoader
             }
             return this;
         }
+
+        public Optional<IClip> getClip(String name)
+        {
+            if(name.equals("main"))
+            {
+                return Optional.<IClip>of(B3DClip.instance);
+            }
+            return Optional.absent();
+        }
+
+        public IModelState getDefaultState()
+        {
+            return new B3DState(model.getRoot().getAnimation(), defaultKey, defaultKey, 0);
+        }
     }
 
     private static class BakedWrapper implements IFlexibleBakedModel, ISmartBlockModel, ISmartItemModel, IPerspectiveAwareModel
@@ -840,9 +855,19 @@ public class B3DLoader implements ICustomModelLoader
                     Collection<Face> faces = mesh.bake(new Function<Node<?>, Matrix4f>()
                     {
                         private final TRSRTransformation global = state.apply(Optional.<IModelPart>absent()).or(TRSRTransformation.identity());
+                        private final LoadingCache<Node<?>, TRSRTransformation> localCache = CacheBuilder.newBuilder()
+                            .maximumSize(32)
+                            .build(new CacheLoader<Node<?>, TRSRTransformation>()
+                            {
+                                public TRSRTransformation load(Node<?> node) throws Exception
+                                {
+                                    return state.apply(Optional.of(new NodeJoint(node))).or(TRSRTransformation.identity());
+                                }
+                            });
+
                         public Matrix4f apply(Node<?> node)
                         {
-                            return global.compose(state.apply(Optional.of(new NodeJoint(node))).or(TRSRTransformation.identity())).getMatrix();
+                            return global.compose(localCache.getUnchecked(node)).getMatrix();
                         }
                     });
                     for(Face f : faces)
@@ -978,6 +1003,21 @@ public class B3DLoader implements ICustomModelLoader
                         return new BakedWrapper(node, newState, format, meshes, textures);
                     }
                 }
+                else if(exState.getUnlistedNames().contains(Properties.AnimationProperty))
+                {
+                    // FIXME: should animation state handle the parent state, or should it remain here?
+                    IModelState parent = this.state;
+                    if(parent instanceof B3DState)
+                    {
+                        B3DState ps = (B3DState)parent;
+                        parent = ps.getParent();
+                    }
+                    IModelState newState = exState.getValue(Properties.AnimationProperty);
+                    if(newState != null)
+                    {
+                        return new BakedWrapper(node, new ModelStateComposition(parent, newState), format, meshes, textures);
+                    }
+                }
             }
             return this;
         }

src/main/java/net/minecraftforge/client/model/b3d/B3DModel.java

@@ -31,6 +31,7 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
 import com.google.common.base.Function;
+import com.google.common.base.Joiner;
 import com.google.common.base.Optional;
 import com.google.common.collect.HashBasedTable;
 import com.google.common.collect.ImmutableList;
@@ -43,6 +44,7 @@ import com.google.common.collect.Table;
 public class B3DModel
 {
     static final Logger logger = LogManager.getLogger(B3DModel.class);
+    private static final boolean printLoadedModels = "true".equals(System.getProperty("b3dloader.printLoadedModels"));
     private final List<Texture> textures;
     private final List<Brush> brushes;
     private final Node<?> root;
@@ -88,13 +90,27 @@ public class B3DModel
             }
         }
 
+        private String dump = "";
+        private void dump(String str)
+        {
+            if(printLoadedModels)
+            {
+                dump += str + "\n";
+            }
+        }
+
         private B3DModel res;
 
         public B3DModel parse() throws IOException
         {
             if(res != null) return res;
+            dump = "\n";
             readHeader();
             res = bb3d();
+            if(printLoadedModels)
+            {
+                logger.info(dump);
+            }
             return res;
         }
 
@@ -192,6 +208,7 @@ public class B3DModel
             List<Texture> textures = Collections.emptyList();
             List<Brush> brushes = Collections.emptyList();
             Node<?> root = null;
+            dump("BB3D(version = " + version + ") {");
             while(buf.hasRemaining())
             {
                 readHeader();
@@ -200,6 +217,7 @@ public class B3DModel
                 else if(isChunk("NODE")) root = node();
                 else skip();
             }
+            dump("}");
             popLimit();
             return new B3DModel(textures, brushes, root, meshes.build());
         }
@@ -218,6 +236,7 @@ public class B3DModel
                 float rot = buf.getFloat();
                 ret.add(new Texture(path, flags, blend, pos, scale, rot));
             }
+            dump("TEXS([" + Joiner.on(", ").join(ret) + "])");
             popLimit();
             this.textures.addAll(ret);
             return ret;
@@ -239,6 +258,7 @@ public class B3DModel
                 for(int i = 0; i < n_texs; i++) textures.add(getTexture(buf.getInt()));
                 ret.add(new Brush(name, color, shininess, blend, fx, textures));
             }
+            dump("BRUS([" + Joiner.on(", ").join(ret) + "])");
             popLimit();
             this.brushes.addAll(ret);
             return ret;
@@ -287,6 +307,7 @@ public class B3DModel
                 }
                 ret.add(new Vertex(v, n, color, tex_coords));
             }
+            dump("VRTS([" + Joiner.on(", ").join(ret) + "])");
             popLimit();
             this.vertices.clear();
             this.vertices.addAll(ret);
@@ -302,6 +323,7 @@ public class B3DModel
             {
                 ret.add(new Face(getVertex(buf.getInt()), getVertex(buf.getInt()), getVertex(buf.getInt()), getBrush(brush_id)));
             }
+            dump("TRIS([" + Joiner.on(", ").join(ret) + "])");
             popLimit();
             return ret;
         }
@@ -311,6 +333,7 @@ public class B3DModel
             chunk("MESH");
             int brush_id = buf.getInt();
             readHeader();
+            dump("MESH(brush = " + brush_id + ") {");
             vrts();
             List<Face> ret = new ArrayList<Face>();
             while(buf.hasRemaining())
@@ -318,6 +341,7 @@ public class B3DModel
                 readHeader();
                 ret.addAll(tris());
             }
+            dump("}");
             popLimit();
             return Pair.of(getBrush(brush_id), ret);
         }
@@ -330,6 +354,7 @@ public class B3DModel
             {
                 ret.add(Pair.of(getVertex(buf.getInt()), buf.getFloat()));
             }
+            dump("BONE(...)");
             popLimit();
             return ret;
         }
@@ -381,6 +406,7 @@ public class B3DModel
                 animations.peek().put(frame, Optional.<Node<?>>absent(), key);
                 ret.put(frame, key);
             }
+            dump("KEYS([(" + Joiner.on("), (").withKeyValueSeparator(" -> ").join(ret) + ")])");
             popLimit();
             return ret;
         }
@@ -391,6 +417,7 @@ public class B3DModel
             int flags = buf.getInt();
             int frames = buf.getInt();
             float fps = buf.getFloat();
+            dump("ANIM(" + flags + ", " + frames + ", " + fps + ")");
             popLimit();
             return Triple.of(flags, frames, fps);
         }
@@ -408,6 +435,7 @@ public class B3DModel
             Vector3f pos = new Vector3f(buf.getFloat(), buf.getFloat(), buf.getFloat());
             Vector3f scale = new Vector3f(buf.getFloat(), buf.getFloat(), buf.getFloat());
             Quat4f rot = readQuat();
+            dump("NODE(" + name + ", " + pos + ", " + scale + ", " + rot + ") {");
             while(buf.hasRemaining())
             {
                 readHeader();
@@ -418,6 +446,7 @@ public class B3DModel
                 else if(isChunk("ANIM")) animData = anim();
                 else skip();
             }
+            dump("}");
             popLimit();
             Table<Integer, Optional<Node<?>>, Key> keyData = animations.pop();
             Node<?> node;
@@ -965,6 +994,7 @@ public class B3DModel
         private Node<Mesh> parent;
         private final Brush brush;
         private final ImmutableList<Face> faces;
+        //private final ImmutableList<Bone> bones;
 
         private Set<Node<Bone>> bones = new HashSet<Node<Bone>>();
 

src/main/java/net/minecraftforge/client/model/pipeline/LightUtil.java

@@ -81,6 +81,8 @@ public class LightUtil
             }
         });
 
+    private static final int itemCount = DefaultVertexFormats.ITEM.getElementCount();
+
     public static void putBakedQuad(IVertexConsumer consumer, BakedQuad quad)
     {
         consumer.setQuadOrientation(quad.getFace());
@@ -94,12 +96,14 @@ public class LightUtil
         }
         //int[] eMap = mapFormats(consumer.getVertexFormat(), DefaultVertexFormats.ITEM);
         float[] data = new float[4];
-        int[] eMap = formatMaps.getUnchecked(consumer.getVertexFormat());
+        VertexFormat format = consumer.getVertexFormat();
+        int count = format.getElementCount();
+        int[] eMap = formatMaps.getUnchecked(format);
         for(int v = 0; v < 4; v++)
         {
-            for(int e = 0; e < consumer.getVertexFormat().getElementCount(); e++)
+            for(int e = 0; e < count; e++)
             {
-                if(eMap[e] != DefaultVertexFormats.ITEM.getElementCount())
+                if(eMap[e] != itemCount)
                 {
                     unpack(quad.getVertexData(), data, DefaultVertexFormats.ITEM, v, eMap[e]);
                     consumer.put(e, data);
@@ -114,13 +118,15 @@ public class LightUtil
 
     public static int[] mapFormats(VertexFormat from, VertexFormat to)
     {
-        int[] eMap = new int[from.getElementCount()];
+        int fromCount = from.getElementCount();
+        int toCount = to.getElementCount();
+        int[] eMap = new int[fromCount];
 
-        for(int e = 0; e < from.getElementCount(); e++)
+        for(int e = 0; e < fromCount; e++)
         {
             VertexFormatElement expected = from.getElement(e);
             int e2;
-            for(e2 = 0; e2 < to.getElementCount(); e2++)
+            for(e2 = 0; e2 < toCount; e2++)
             {
                 VertexFormatElement current = to.getElement(e2);
                 if(expected.getUsage() == current.getUsage() && expected.getIndex() == current.getIndex())
@@ -135,44 +141,50 @@ public class LightUtil
 
     public static void unpack(int[] from, float[] to, VertexFormat formatFrom, int v, int e)
     {
+        int length = 4 < to.length ? 4 : to.length;
         VertexFormatElement element = formatFrom.getElement(e);
-        int length = 4 <+ to.length ? 4 : to.length;
+        int vertexStart = v * formatFrom.getNextOffset() + formatFrom.func_181720_d(e);
+        int count = element.getElementCount();
+        VertexFormatElement.EnumType type = element.getType();
+        int size = type.getSize();
+        int mask = (256 << (8 * (size - 1))) - 1;
         for(int i = 0; i < length; i++)
         {
-            if(i < element.getElementCount())
+            if(i < count)
             {
-                int pos = v * formatFrom.getNextOffset() + formatFrom.func_181720_d(e) + element.getType().getSize() * i;
+                int pos = vertexStart + size * i;
                 int index = pos >> 2;
                 int offset = pos & 3;
                 int bits = from[index];
                 bits = bits >>> (offset * 8);
-                if((pos + element.getType().getSize() - 1) / 4 != index)
+                if((pos + size - 1) / 4 != index)
                 {
                     bits |= from[index + 1] << ((4 - offset) * 8);
                 }
-                int mask = (256 << (8 * (element.getType().getSize() - 1))) - 1;
                 bits &= mask;
-                switch(element.getType())
+                if(type == VertexFormatElement.EnumType.FLOAT)
                 {
-                    case FLOAT:
-                        to[i] = Float.intBitsToFloat(bits);
-                        break;
-                    case UBYTE:
-                    case USHORT:
-                        to[i] = (float)bits / mask;
-                        break;
-                    case UINT:
-                        to[i] = (float)((double)(bits & 0xFFFFFFFFL) / 0xFFFFFFFFL);
-                        break;
-                    case BYTE:
-                        to[i] = ((float)(byte)bits) / mask * 2;
-                        break;
-                    case SHORT:
-                        to[i] = ((float)(short)bits) / mask * 2;
-                        break;
-                    case INT:
-                        to[i] = ((float)(bits & 0xFFFFFFFFL)) / 0xFFFFFFFFL * 2;
-                        break;
+                    to[i] = Float.intBitsToFloat(bits);
+                }
+                else if(type == VertexFormatElement.EnumType.UBYTE || type == VertexFormatElement.EnumType.USHORT)
+                {
+                    to[i] = (float)bits / mask;
+                }
+                else if(type == VertexFormatElement.EnumType.UINT)
+                {
+                    to[i] = (float)((double)(bits & 0xFFFFFFFFL) / 0xFFFFFFFFL);
+                }
+                else if(type == VertexFormatElement.EnumType.BYTE)
+                {
+                    to[i] = ((float)(byte)bits) / mask * 2;
+                }
+                else if(type == VertexFormatElement.EnumType.SHORT)
+                {
+                    to[i] = ((float)(short)bits) / mask * 2;
+                }
+                else if(type == VertexFormatElement.EnumType.INT)
+                {
+                    to[i] = ((float)(bits & 0xFFFFFFFFL)) / 0xFFFFFFFFL * 2;
                 }
             }
             else
@@ -185,31 +197,35 @@ public class LightUtil
     public static void pack(float[] from, int[] to, VertexFormat formatTo, int v, int e)
     {
         VertexFormatElement element = formatTo.getElement(e);
+        int vertexStart = v * formatTo.getNextOffset() + formatTo.func_181720_d(e);
+        int count = element.getElementCount();
+        VertexFormatElement.EnumType type = element.getType();
+        int size = type.getSize();
+        int mask = (256 << (8 * (size - 1))) - 1;
         for(int i = 0; i < 4; i++)
         {
-            if(i < element.getElementCount())
+            if(i < count)
             {
-                int pos = v * formatTo.getNextOffset() + formatTo.func_181720_d(e) + element.getType().getSize() * i;
+                int pos = vertexStart + size * i;
                 int index = pos >> 2;
                 int offset = pos & 3;
                 int bits = 0;
-                int mask = (256 << (8 * (element.getType().getSize() - 1))) - 1;
                 float f = i < from.length ? from[i] : 0;
-                switch(element.getType())
+                if(type == VertexFormatElement.EnumType.FLOAT)
                 {
-                    case FLOAT:
-                        bits = Float.floatToRawIntBits(f);
-                        break;
-                    case UBYTE:
-                    case USHORT:
-                    case UINT:
-                        bits = (int)(f * mask);
-                        break;
-                    case BYTE:
-                    case SHORT:
-                    case INT:
-                        bits = (int)(f * mask / 2);
-                        break;
+                    bits = Float.floatToRawIntBits(f);
+                }
+                else if(
+                    type == VertexFormatElement.EnumType.UBYTE ||
+                    type == VertexFormatElement.EnumType.USHORT ||
+                    type == VertexFormatElement.EnumType.UINT
+                )
+                {
+                    bits = (int)(f * mask);
+                }
+                else
+                {
+                    bits = (int)(f * mask / 2);
                 }
                 to[index] &= ~(mask << (offset * 8));
                 to[index] |= (((bits & mask) << (offset * 8)));

src/main/java/net/minecraftforge/client/model/pipeline/VertexLighterFlat.java

@@ -114,6 +114,9 @@ public class VertexLighterFlat extends QuadGatheringTransformer
             multiplier = blockInfo.getColorMultiplier(tint);
         }
 
+        VertexFormat format = parent.getVertexFormat();
+        int count = format.getElementCount();
+
         for(int v = 0; v < 4; v++)
         {
             position[v][0] += blockInfo.getShx();
@@ -145,9 +148,10 @@ public class VertexLighterFlat extends QuadGatheringTransformer
             }
 
             // no need for remapping cause all we could've done is add 1 element to the end
-            for(int e = 0; e < parent.getVertexFormat().getElementCount(); e++)
+            for(int e = 0; e < count; e++)
             {
-                switch(parent.getVertexFormat().getElement(e).getUsage())
+                VertexFormatElement element = format.getElement(e);
+                switch(element.getUsage())
                 {
                     case POSITION:
                         // position adding moved to WorldRendererConsumer due to x and z not fitting completely into a float
@@ -166,7 +170,7 @@ public class VertexLighterFlat extends QuadGatheringTransformer
                     case COLOR:
                         parent.put(e, color[v]);
                         break;
-                    case UV: if(getVertexFormat().getElement(e).getIndex() == 1)
+                    case UV: if(element.getIndex() == 1)
                     {
                         parent.put(e, lightmap[v]);
                         break;

src/main/java/net/minecraftforge/client/model/pipeline/VertexLighterSmoothAo.java

@@ -40,25 +40,28 @@ public class VertexLighterSmoothAo extends VertexLighterFlat
             y *= s;
             z *= s;
         }
-        float ax = Math.abs(x);
-        float ay = Math.abs(y);
-        float az = Math.abs(z);
+        float ax = x > 0 ? x : -x;
+        float ay = y > 0 ? y : -y;
+        float az = z > 0 ? z : -z;
         float e1 = 1 + 1e-4f;
         if(ax > 2 - 1e-4f && ay <= e1 && az <= e1)
         {
-            x = MathHelper.clamp_float(x, -2 + 1e-4f, 2 - 1e-4f);
+            if(x > -2 + 1e-4f) x = -2 + 1e-4f;
+            if(x <  2 - 1e-4f) x =  2 - 1e-4f;
         }
         else if(ay > 2 - 1e-4f && az <= e1 && ax <= e1)
         {
-            y = MathHelper.clamp_float(y, -2 + 1e-4f, 2 - 1e-4f);
+            if(y > -2 + 1e-4f) y = -2 + 1e-4f;
+            if(y <  2 - 1e-4f) y =  2 - 1e-4f;
         }
         else if(az > 2 - 1e-4f && ax <= e1 && ay <= e1)
         {
-            z = MathHelper.clamp_float(z, -2 + 1e-4f, 2 - 1e-4f);
+            if(z > -2 + 1e-4f) z = -2 + 1e-4f;
+            if(z <  2 - 1e-4f) z =  2 - 1e-4f;
         }
-        ax = Math.abs(x);
-        ay = Math.abs(y);
-        az = Math.abs(z);
+        ax = x > 0 ? x : -x;
+        ay = y > 0 ? y : -y;
+        az = z > 0 ? z : -z;
         if(ax <= e1 && ay + az > 3f - 1e-4f)
         {
             float s = (3f - 1e-4f) / (ay + az);

src/main/java/net/minecraftforge/client/model/pipeline/WorldRendererConsumer.java

@@ -1,7 +1,5 @@
 package net.minecraftforge.client.model.pipeline;
 
-import java.util.Arrays;
-
 import net.minecraft.client.renderer.WorldRenderer;
 import net.minecraft.client.renderer.vertex.VertexFormat;
 import net.minecraft.client.renderer.vertex.VertexFormatElement.EnumUsage;
@@ -46,7 +44,7 @@ public class WorldRendererConsumer implements IVertexConsumer
             {
                 renderer.addVertexData(quadData);
                 renderer.putPosition(offset.getX(), offset.getY(), offset.getZ());
-                Arrays.fill(quadData, 0);
+                //Arrays.fill(quadData, 0);
                 v = 0;
             }
         }
@@ -60,4 +58,4 @@ public class WorldRendererConsumer implements IVertexConsumer
     public void setQuadTint(int tint) {}
     public void setQuadOrientation(EnumFacing orientation) {}
     public void setQuadColored() {}
-}
+}

src/main/java/net/minecraftforge/common/model/animation/IAnimationStateMachine.java

@@ -0,0 +1,36 @@
+package net.minecraftforge.common.model.animation;
+
+import net.minecraftforge.client.model.IModelState;
+import net.minecraftforge.client.model.animation.Event;
+
+import org.apache.commons.lang3.tuple.Pair;
+
+/**
+ * State machine representing the model animation.
+ */
+public interface IAnimationStateMachine
+{
+    /**
+     * Sample the state and events at the current time.
+     * Event iterable will contain all events that happened from the last invocation of this method, from most to least recent.
+     * Event offset is relative to the previous event, and for the first event it's relative to the current time. 
+     */
+    Pair<IModelState, Iterable<Event>> apply(float time);
+
+    /**
+     * Transition to a new state.
+     */
+    void transition(String newState);
+
+    /**
+     * Get current state name.
+     */
+    String currentState();
+
+    /**
+     * Set to true if the machine should handle special events that come from the clips (they start with '!').
+     * Right now only implemented event is "!transition:<state_name>".
+     * Default value is true.
+     */
+    void shouldHandleSpecialEvents(boolean value);
+}

src/main/java/net/minecraftforge/common/property/Properties.java

@@ -1,9 +1,27 @@
 package net.minecraftforge.common.property;
 
 import net.minecraft.block.properties.IProperty;
+import net.minecraft.block.properties.PropertyBool;
+import net.minecraftforge.client.model.IModelState;
 
 public class Properties
 {
+    /**
+     * Property indicating if the model should be rendered in the static renderer or in the TESR. AnimationTESR sets it to false.
+     */
+    public static final PropertyBool StaticProperty = PropertyBool.create("static");
+
+    /**
+     * Property holding the IModelState used for animating the model in the TESR.
+     */
+    public static final IUnlistedProperty<IModelState> AnimationProperty = new IUnlistedProperty<IModelState>()
+    {
+        public String getName() { return "forge_animation"; }
+        public boolean isValid(IModelState state) { return true; }
+        public Class<IModelState> getType() { return IModelState.class; }
+        public String valueToString(IModelState state) { return state.toString(); }
+    };
+
     public static <V extends Comparable<V>> IUnlistedProperty<V> toUnlisted(IProperty<V> property)
     {
         return new PropertyAdapter<V>(property);

src/main/java/net/minecraftforge/common/util/JsonUtils.java

@@ -0,0 +1,73 @@
+package net.minecraftforge.common.util;
+
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.util.List;
+import java.util.Map;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.reflect.TypeParameter;
+import com.google.common.reflect.TypeToken;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+public class JsonUtils
+{
+    // http://stackoverflow.com/questions/7706772/deserializing-immutablelist-using-gson/21677349#21677349
+    public enum ImmutableListTypeAdapter implements JsonDeserializer<ImmutableList<?>>, JsonSerializer<ImmutableList<?>>
+    {
+        INSTANCE;
+
+        public ImmutableList<?> deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException
+        {
+            final Type[] typeArguments = ((ParameterizedType) type).getActualTypeArguments();
+            final Type parameterizedType = listOf(typeArguments[0]).getType();
+            final List<?> list = context.deserialize(json, parameterizedType);
+            return ImmutableList.copyOf(list);
+        }
+
+        public JsonElement serialize(ImmutableList<?> src, Type type, JsonSerializationContext context)
+        {
+            final Type[] typeArguments = ((ParameterizedType) type).getActualTypeArguments();
+            final Type parameterizedType = listOf(typeArguments[0]).getType();
+            return context.serialize(src, parameterizedType);
+        }
+    }
+
+    @SuppressWarnings({ "serial", "unchecked" })
+    private static <E> TypeToken<List<E>> listOf(final Type arg)
+    {
+        return new TypeToken<List<E>>() {}.where(new TypeParameter<E>() {}, (TypeToken<E>) TypeToken.of(arg));
+    }
+
+    public enum ImmutableMapTypeAdapter implements JsonDeserializer<ImmutableMap<String, ?>>, JsonSerializer<ImmutableMap<String, ?>>
+    {
+        INSTANCE;
+
+        public ImmutableMap<String, ?> deserialize(JsonElement json, Type type, JsonDeserializationContext context) throws JsonParseException
+        {
+            final Type[] typeArguments = ((ParameterizedType) type).getActualTypeArguments();
+            final Type parameterizedType = mapOf(typeArguments[1]).getType();
+            final Map<String, ?> map = context.deserialize(json, parameterizedType);
+            return ImmutableMap.copyOf(map);
+        }
+
+        public JsonElement serialize(ImmutableMap<String, ?> src, Type type, JsonSerializationContext context)
+        {
+            final Type[] typeArguments = ((ParameterizedType) type).getActualTypeArguments();
+            final Type parameterizedType = mapOf(typeArguments[1]).getType();
+            return context.serialize(src, parameterizedType);
+        }
+    }
+
+    @SuppressWarnings({ "serial", "unchecked" })
+    private static <E> TypeToken<Map<String, E>> mapOf(final Type arg)
+    {
+        return new TypeToken<Map<String, E>>() {}.where(new TypeParameter<E>() {}, (TypeToken<E>) TypeToken.of(arg));
+    }
+}

src/main/java/net/minecraftforge/fml/client/FMLClientHandler.java

@@ -68,6 +68,7 @@ import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.StringUtils;
 import net.minecraft.world.WorldSettings;
 import net.minecraft.world.storage.SaveFormatOld;
+import net.minecraftforge.client.model.animation.Animation;
 import net.minecraftforge.fml.client.registry.RenderingRegistry;
 import net.minecraftforge.fml.common.DummyModContainer;
 import net.minecraftforge.fml.common.DuplicateModsFoundException;
@@ -199,6 +200,8 @@ public class FMLClientHandler implements IFMLSidedHandler
             return;
         }
 
+        resourceManager.registerReloadListener(Animation.INSTANCE);
+
         FMLCommonHandler.instance().beginLoading(this);
         try
         {

src/test/java/net/minecraftforge/debug/ModelAnimationDebug.java

@@ -1,50 +1,64 @@
 package net.minecraftforge.debug;
 
+import java.io.IOException;
+
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockPistonBase;
 import net.minecraft.block.material.Material;
 import net.minecraft.block.properties.IProperty;
-import net.minecraft.block.properties.PropertyBool;
 import net.minecraft.block.properties.PropertyDirection;
 import net.minecraft.block.state.IBlockState;
-import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.BlockRendererDispatcher;
-import net.minecraft.client.renderer.GlStateManager;
-import net.minecraft.client.renderer.RenderHelper;
-import net.minecraft.client.renderer.Tessellator;
-import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.renderer.entity.Render;
+import net.minecraft.client.renderer.entity.RenderLiving;
+import net.minecraft.client.renderer.entity.RenderManager;
 import net.minecraft.client.renderer.texture.TextureMap;
-import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
-import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
-import net.minecraft.client.resources.model.IBakedModel;
 import net.minecraft.client.resources.model.ModelResourceLocation;
 import net.minecraft.creativetab.CreativeTabs;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.entity.SharedMonsterAttributes;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.Item;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.BlockPos;
 import net.minecraft.util.EnumFacing;
-import net.minecraft.util.ITickable;
+import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
-import net.minecraftforge.client.model.ISmartBlockModel;
+import net.minecraftforge.client.model.IModel;
+import net.minecraftforge.client.model.IModelState;
+import net.minecraftforge.client.model.IRetexturableModel;
 import net.minecraftforge.client.model.ModelLoader;
+import net.minecraftforge.client.model.ModelLoaderRegistry;
+import net.minecraftforge.client.model.MultiModel;
+import net.minecraftforge.client.model.TRSRTransformation;
+import net.minecraftforge.client.model.animation.Animation;
+import net.minecraftforge.client.model.animation.AnimationModelBase;
+import net.minecraftforge.client.model.animation.AnimationTESR;
+import net.minecraftforge.client.model.animation.Event;
+import net.minecraftforge.client.model.animation.IAnimationProvider;
+import net.minecraftforge.client.model.animation.ITimeValue;
+import net.minecraftforge.client.model.animation.TimeValues.VariableValue;
 import net.minecraftforge.client.model.b3d.B3DLoader;
-import net.minecraftforge.client.model.b3d.B3DLoader.B3DFrameProperty;
-import net.minecraftforge.client.model.b3d.B3DLoader.B3DState;
+import net.minecraftforge.client.model.pipeline.VertexLighterSmoothAo;
+import net.minecraftforge.common.model.animation.IAnimationStateMachine;
 import net.minecraftforge.common.property.ExtendedBlockState;
-import net.minecraftforge.common.property.IExtendedBlockState;
 import net.minecraftforge.common.property.IUnlistedProperty;
+import net.minecraftforge.common.property.Properties;
 import net.minecraftforge.fml.client.registry.ClientRegistry;
+import net.minecraftforge.fml.client.registry.IRenderFactory;
+import net.minecraftforge.fml.client.registry.RenderingRegistry;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.Mod.EventHandler;
+import net.minecraftforge.fml.common.Mod.Instance;
 import net.minecraftforge.fml.common.SidedProxy;
-import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
+import net.minecraftforge.fml.common.registry.EntityRegistry;
 import net.minecraftforge.fml.common.registry.GameRegistry;
 
-import org.lwjgl.opengl.GL11;
+import org.apache.commons.lang3.tuple.Pair;
+
+import com.google.common.collect.ImmutableMap;
 
 @Mod(modid = ModelAnimationDebug.MODID, version = ModelAnimationDebug.VERSION)
 public class ModelAnimationDebug
@@ -54,12 +68,14 @@ public class ModelAnimationDebug
 
     public static String blockName = "test_animation_block";
     public static final PropertyDirection FACING = PropertyDirection.create("facing");
-    public static final PropertyBool STATIC = PropertyBool.create("static");;
+
+    @Instance(MODID)
+    public static ModelAnimationDebug instance;
 
     @SidedProxy
     public static CommonProxy proxy;
 
-    public static class CommonProxy
+    public static abstract class CommonProxy
     {
         public void preInit(FMLPreInitializationEvent event)
         {
@@ -73,7 +89,7 @@ public class ModelAnimationDebug
                 @Override
                 public ExtendedBlockState createBlockState()
                 {
-                    return new ExtendedBlockState(this, new IProperty[]{ FACING, STATIC }, new IUnlistedProperty[]{ B3DFrameProperty.instance });
+                    return new ExtendedBlockState(this, new IProperty[]{ FACING, Properties.StaticProperty }, new IUnlistedProperty[]{ Properties.AnimationProperty });
                 }
 
                 @Override
@@ -105,12 +121,12 @@ public class ModelAnimationDebug
 
                 @Override
                 public TileEntity createTileEntity(World world, IBlockState state) {
-                    return new Chest(state);
+                    return new Chest();
                 }
 
                 @Override
                 public IBlockState getActualState(IBlockState state, IBlockAccess world, BlockPos pos) {
-                    return state.withProperty(STATIC, true);
+                    return state.withProperty(Properties.StaticProperty, true);
                 }
 
                 /*@Override
@@ -131,18 +147,25 @@ public class ModelAnimationDebug
                         TileEntity te = world.getTileEntity(pos);
                         if(te instanceof Chest)
                         {
-                            ((Chest)te).click();
+                            ((Chest)te).click(player.isSneaking());
                         }
                     }
-                    return false;
+                    return true;
                 }
             }, blockName);
+            GameRegistry.registerTileEntity(Chest.class, MODID + ":" + "tile_" + blockName);
         }
 
-        public void init(FMLInitializationEvent event) {}
+        public abstract IAnimationStateMachine load(ResourceLocation location, ImmutableMap<String, ITimeValue> parameters);
     }
 
-    public static class ServerProxy extends CommonProxy {}
+    public static class ServerProxy extends CommonProxy
+    {
+        public IAnimationStateMachine load(ResourceLocation location, ImmutableMap<String, ITimeValue> parameters)
+        {
+            return null;
+        }
+    }
 
     public static class ClientProxy extends CommonProxy
     {
@@ -152,142 +175,212 @@ public class ModelAnimationDebug
             super.preInit(event);
             B3DLoader.instance.addDomain(MODID);
             ModelLoader.setCustomModelResourceLocation(Item.getItemFromBlock(GameRegistry.findBlock(MODID, blockName)), 0, new ModelResourceLocation(MODID.toLowerCase() + ":" + blockName, "inventory"));
-            ClientRegistry.bindTileEntitySpecialRenderer(Chest.class, ChestRenderer.instance);
+            ClientRegistry.bindTileEntitySpecialRenderer(Chest.class, new AnimationTESR<Chest>()
+            {
+                @Override
+                public void handleEvents(Chest chest, float time, Iterable<Event> pastEvents)
+                {
+                    chest.handleEvents(time, pastEvents);
+                }
+            });
+            String entityName = MODID + ":entity_chest";
+            //EntityRegistry.registerGlobalEntityID(EntityChest.class, entityName, EntityRegistry.findGlobalUniqueEntityId());
+            EntityRegistry.registerModEntity(EntityChest.class, entityName, 0, ModelAnimationDebug.instance, 64, 20, true, 0xFFAAAA00, 0xFFDDDD00);
+            RenderingRegistry.registerEntityRenderingHandler(EntityChest.class, new IRenderFactory<EntityChest>()
+            {
+                public Render<EntityChest> createRenderFor(RenderManager manager)
+                {
+                    try
+                    {
+                        /*model = ModelLoaderRegistry.getModel(new ResourceLocation(ModelLoaderRegistryDebug.MODID, "block/chest.b3d"));
+                        if(model instanceof IRetexturableModel)
+                        {
+                            model = ((IRetexturableModel)model).retexture(ImmutableMap.of("#chest", "entity/chest/normal"));
+                        }
+                        if(model instanceof IModelCustomData)
+                        {
+                            model = ((IModelCustomData)model).process(ImmutableMap.of("mesh", "[\"Base\", \"Lid\"]"));
+                        }*/
+                        IModel base = ModelLoaderRegistry.getModel(new ResourceLocation(ModelAnimationDebug.MODID, "block/engine"));
+                        IModel ring = ModelLoaderRegistry.getModel(new ResourceLocation(ModelAnimationDebug.MODID, "block/engine_ring"));
+                        ImmutableMap<String, String> textures = ImmutableMap.of(
+                            "base", "blocks/stone",
+                            "front", "blocks/log_oak",
+                            "chamber", "blocks/redstone_block",
+                            "trunk", "blocks/end_stone"
+                        );
+                        if(base instanceof IRetexturableModel)
+                        {
+                            base = ((IRetexturableModel)base).retexture(textures);
+                        }
+                        if(ring instanceof IRetexturableModel)
+                        {
+                            ring = ((IRetexturableModel)ring).retexture(textures);
+                        }
+                        IModel model = new MultiModel(
+                            new ResourceLocation(ModelAnimationDebug.MODID, "builtin/engine"),
+                            ring,
+                            TRSRTransformation.identity(),
+                            ImmutableMap.of(
+                                "base", Pair.<IModel, IModelState>of(base, TRSRTransformation.identity())
+                            )
+                        );
+                        return new RenderLiving<EntityChest>(manager, new AnimationModelBase<EntityChest>(model, new VertexLighterSmoothAo())
+                            {
+                                @Override
+                                public void handleEvents(EntityChest chest, float time, Iterable<Event> pastEvents)
+                                {
+                                    chest.handleEvents(time, pastEvents);
+                                }
+                            }, 0.5f)
+                        {
+                            protected ResourceLocation getEntityTexture(EntityChest entity)
+                            {
+                                return TextureMap.locationBlocksTexture;
+                            }
+                        };
+                    }
+                    catch(IOException e)
+                    {
+                        throw new RuntimeException(e);
+                    }
+                }
+            });
         }
 
-        @Override
-        public void init(FMLInitializationEvent event)
+        public IAnimationStateMachine load(ResourceLocation location, ImmutableMap<String, ITimeValue> parameters)
         {
-            super.init(event);
+            return Animation.INSTANCE.load(location, parameters);
         }
+
     }
 
     @EventHandler
     public void preInit(FMLPreInitializationEvent event) { proxy.preInit(event); }
 
-    @EventHandler
-    public void init(FMLInitializationEvent event) { proxy.init(event); }
-
-    private static class Chest extends TileEntity implements ITickable
+    public static class Chest extends TileEntity implements IAnimationProvider
     {
-        private final int minFrame = 1;
-        private final int maxFrame = 10;
-        private int tick = minFrame;
-        private boolean opening = false;
-        private boolean closing = false;
+        private final IAnimationStateMachine asm;
+        private final VariableValue cycleLength = new VariableValue(4);
+        private final VariableValue clickTime = new VariableValue(Float.NEGATIVE_INFINITY);
+        //private final VariableValue offset = new VariableValue(0);
 
-        public Chest(IBlockState state) {
+        public Chest() {
+            /*asm = proxy.load(new ResourceLocation(MODID.toLowerCase(), "asms/block/chest.json"), ImmutableMap.<String, ITimeValue>of(
+                "click_time", clickTime
+            ));*/
+            asm = proxy.load(new ResourceLocation(MODID.toLowerCase(), "asms/block/engine.json"), ImmutableMap.<String, ITimeValue>of(
+                "cycle_length", cycleLength,
+                "click_time", clickTime
+                //"offset", offset
+            ));
+        }
+
+        public void handleEvents(float time, Iterable<Event> pastEvents)
+        {
+            for(Event event : pastEvents)
+            {
+                System.out.println("Event: " + event.event() + " " + event.offset() + " " + getPos() + " " + time);
+            }
+        }
+
+        @Override
+        public boolean hasFastRenderer()
+        {
+            return true;
         }
 
         /*public IExtendedBlockState getState(IExtendedBlockState state) {
             return state.withProperty(B3DFrameProperty.instance, curState);
         }*/
 
-        public void click()
+        public void click(boolean sneaking)
         {
-            if(opening || tick == maxFrame)
+            if(asm != null)
             {
-                opening = false;
-                closing = true;
-                return;
-            }
-            if(closing || tick == minFrame)
-            {
-                closing = false;
-                opening = true;
-                return;
-            }
-            opening = true;
-        }
-
-        @Override
-        public void update()
-        {
-            if(opening)
-            {
-                tick++;
-                if(tick >= maxFrame)
+                if(sneaking)
                 {
-                    tick = maxFrame;
-                    opening = false;
+                    cycleLength.setValue(6 - cycleLength.apply(0));
                 }
-            }
-            if(closing)
-            {
-                tick--;
-                if(tick <= minFrame)
+                /*else if(asm.currentState().equals("closed"))
                 {
-                    tick = minFrame;
-                    closing = false;
+                    clickTime.setValue(Animation.getWorldTime(getWorld()));
+                    asm.transition("opening");
+                }
+                else if(asm.currentState().equals("open"))
+                {
+                    clickTime.setValue(Animation.getWorldTime(getWorld()));
+                    asm.transition("closing");
+                }*/
+                else if(asm.currentState().equals("default"))
+                {
+                    float time = Animation.getWorldTime(getWorld());
+                    clickTime.setValue(time);
+                    //offset.setValue(time);
+                    //asm.transition("moving");
+                    asm.transition("starting");
+                }
+                else if(asm.currentState().equals("moving"))
+                {
+                    clickTime.setValue(Animation.getWorldTime(getWorld()));
+                    asm.transition("stopping");
                 }
             }
         }
 
-        public int getCurFrame()
+        public IAnimationStateMachine asm()
         {
-            return tick;
-        }
-
-        public int getNextFrame()
-        {
-            if(opening) return Math.min(tick + 1, maxFrame);
-            if(closing) return Math.max(tick - 1, minFrame);
-            return tick;
+            return asm;
         }
     }
 
-    private static class ChestRenderer extends TileEntitySpecialRenderer<Chest>
+    public static class EntityChest extends EntityLiving implements IAnimationProvider
     {
-        public static ChestRenderer instance = new ChestRenderer();
-        private ChestRenderer() {}
+        private final IAnimationStateMachine asm;
+        private VariableValue cycleLength;
 
-        private BlockRendererDispatcher blockRenderer;
-
-        public void renderTileEntityAt(Chest te, double x, double y, double z, float partialTick, int breakStage)
+        public EntityChest(World world)
         {
-            if(blockRenderer == null) blockRenderer = Minecraft.getMinecraft().getBlockRendererDispatcher();
-            IBlockState state = te.getWorld().getBlockState(te.getPos());
-            state = state.withProperty(STATIC, false);
-            IBakedModel model = this.blockRenderer.getBlockModelShapes().getModelForState(state);
-            if(state instanceof IExtendedBlockState)
+            super(world);
+            setSize(1, 1);
+            if(cycleLength == null)
             {
-                IExtendedBlockState exState = (IExtendedBlockState)state;
-                if(exState.getUnlistedNames().contains(B3DFrameProperty.instance))
+                cycleLength = new VariableValue(getHealth() / 5);
+            }
+            asm = proxy.load(new ResourceLocation(MODID.toLowerCase(), "asms/block/engine.json"), ImmutableMap.<String, ITimeValue>of(
+                "cycle_length", cycleLength
+            ));
+        }
+
+        public void handleEvents(float time, Iterable<Event> pastEvents)
+        {
+            // TODO Auto-generated method stub
+        }
+
+        public IAnimationStateMachine asm()
+        {
+            return asm;
+        }
+
+        @Override
+        public void onDataWatcherUpdate(int id)
+        {
+            super.onDataWatcherUpdate(id);
+            if(id == 6) // health
+            {
+                if(cycleLength == null)
                 {
-                    exState = exState.withProperty(B3DFrameProperty.instance, new B3DState(null, te.getCurFrame(), te.getNextFrame(), partialTick));
-                    if(model instanceof ISmartBlockModel)
-                    {
-                        model = ((ISmartBlockModel)model).handleBlockState(exState);
-                    }
+                    cycleLength = new VariableValue(0);
                 }
+                cycleLength.setValue(getHealth() / 5);
             }
+        }
 
-            Tessellator tessellator = Tessellator.getInstance();
-            WorldRenderer worldrenderer = tessellator.getWorldRenderer();
-            this.bindTexture(TextureMap.locationBlocksTexture);
-            RenderHelper.disableStandardItemLighting();
-            GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
-            GlStateManager.enableBlend();
-            GlStateManager.disableCull();
-
-            if (Minecraft.isAmbientOcclusionEnabled())
-            {
-                GlStateManager.shadeModel(GL11.GL_SMOOTH);
-            }
-            else
-            {
-                GlStateManager.shadeModel(GL11.GL_FLAT);
-            }
-
-            worldrenderer.begin(7, DefaultVertexFormats.BLOCK);
-            worldrenderer.setTranslation(x - te.getPos().getX(), y - te.getPos().getY(), z - te.getPos().getZ());
-
-            this.blockRenderer.getBlockModelRenderer().renderModel(te.getWorld(), model, state, te.getPos(), worldrenderer, false);
-
-            worldrenderer.setTranslation(0, 0, 0);
-            tessellator.draw();
-
-            RenderHelper.enableStandardItemLighting();
+        @Override
+        protected void applyEntityAttributes()
+        {
+            super.applyEntityAttributes();
+            this.getEntityAttribute(SharedMonsterAttributes.maxHealth).setBaseValue(60);
         }
     }
 }

src/test/resources/assets/forgedebugmodelanimation/armatures/block/engine_ring.json

@@ -0,0 +1,64 @@
+{
+  "joints": {
+    "ring":    { "0": [ 1.0 ] },
+    "chamber": { "1": [ 1.0 ] },
+    "trunk":   { "2": [ 1.0 ] }
+  },
+  "clips": {
+    "default": {
+      "loop": false,
+      "joint_clips": {},
+      "events": {}
+    },
+    "moving": {
+      "loop": true,
+      "joint_clips": {
+        "ring": [
+          {
+            "variable": "offset_y",
+            "type": "uniform",
+            "interpolation": "linear",
+            "samples": [ 0, 0.08, 0.25, 0.42, 0.5, 0.42, 0.25, 0.08 ]
+          },
+          {
+            "variable": "axis_y",
+            "type": "uniform",
+            "interpolation": "nearest",
+            "samples": [ 1 ]
+          },
+          {
+            "variable": "angle",
+            "type": "uniform",
+            "interpolation": "linear",
+            "samples": [
+              0, 120, 240,
+              0, 120, 240,
+              0, 120, 240,
+              0, 120, 240
+            ]
+          }
+        ],
+        "chamber": [
+          {
+            "variable": "scale",
+            "type": "uniform",
+            "interpolation": "nearest",
+            "samples": [ 0, 1 ]
+          }
+        ],
+        "trunk": [
+          {
+            "variable": "scale",
+            "type": "uniform",
+            "interpolation": "nearest",
+            "samples": [ 1, 0 ]
+          }
+        ]
+      },
+      "events": {
+        "0.5": "boop"
+      }
+    }
+  }
+}
+

src/test/resources/assets/forgedebugmodelanimation/asms/block/chest.json

@@ -0,0 +1,37 @@
+{
+  "parameters": {
+    "end_anim": [ "compose", [ "+", 1 ] , "#click_time" ],
+    "trigger_anim": [ "-", "#end_anim" ],
+    "progress": [ "-", "#click_time" ]
+  },
+  "clips": {
+    "model": "forgedebugmodelloaderregistry:block/chest.b3d@main",
+    "closed": [ "apply", "#model", 0 ],
+    "opening": [
+      "trigger_positive",
+      [ "slerp", "#closed", "#open", "#identity", "#progress" ],
+      "#trigger_anim",
+      "!transition:open"
+    ],
+    "open": [ "apply", "#model", 10 ],
+    "closing": [
+      "trigger_positive",
+      [ "slerp", "#open", "#closed", "#identity", "#progress" ],
+      "#trigger_anim",
+      "!transition:closed"
+    ]
+  },
+  "states": [
+    "closed",
+    "opening",
+    "open",
+    "closing"
+  ],
+  "transitions": {
+    "closed": "opening",
+    "opening": "open",
+    "open": "closing",
+    "closing": "closed"
+  },
+  "start_state": "closed"
+}

src/test/resources/assets/forgedebugmodelanimation/asms/block/engine.json

@@ -0,0 +1,26 @@
+{
+  "parameters": {
+    "world_to_cycle": [ "/", "#cycle_length" ],
+    "round_cycle": [ "compose", [ "R", "#cycle_length" ] , "#click_time" ],
+    "end_cycle": [ "-", "#round_cycle" ]
+  },
+  "clips": {
+    "default": "forgedebugmodelanimation:block/engine_ring@default",
+    "starting": [ "trigger_positive", "#default", "#end_cycle", "!transition:moving" ],
+    "moving": [ "apply", "forgedebugmodelanimation:block/engine_ring@moving", "#world_to_cycle" ],
+    "stopping": [ "trigger_positive", "#moving", "#end_cycle", "!transition:default" ]
+  },
+  "states": [
+    "default",
+    "starting",
+    "moving",
+    "stopping"
+  ],
+  "transitions": {
+    "default": "starting",
+    "starting": "moving",
+    "moving": "stopping",
+    "stopping": "default"
+  },
+  "start_state": "moving"
+}

src/test/resources/assets/forgedebugmodelanimation/asms/block/engine2.json

@@ -0,0 +1,23 @@
+{
+  "parameters": {
+    "clip_time": [ "-/", "#offset", "#cycle_length" ],
+    "round_cycle": [ "compose", [ "-R+", "#offset", "#cycle_length", "#offset" ] , "#click_time" ],
+    "end_cycle": [ "-", "#round_cycle" ]
+  },
+  "clips": {
+    "default": "forgedebugmodelanimation:block/engine_ring@default",
+    "moving": [ "apply", "forgedebugmodelanimation:block/engine_ring@moving", "#clip_time" ],
+    "stopping": [ "trigger_positive", "#moving", "#end_cycle", "!transition:default" ]
+  },
+  "states": [
+    "default",
+    "moving",
+    "stopping"
+  ],
+  "transitions": {
+    "default": "moving",
+    "moving": "stopping",
+    "stopping": "default"
+  },
+  "start_state": "moving"
+}

src/test/resources/assets/forgedebugmodelanimation/blockstates/test_animation_block.json

@@ -2,12 +2,16 @@
     "forge_marker": 1,
     "defaults": {
         "textures": {
-            "#chest": "entity/chest/normal"
-        },
+            "#chest": "entity/chest/normal",
+            "base": "blocks/stone",
+            "front": "blocks/log_oak",
+            "chamber": "blocks/redstone_block",
+            "trunk": "blocks/end_stone"
+        }/*,
         "model": "forgedebugmodelloaderregistry:chest.b3d",
         "custom": {
             "mesh": ["Base", "Lid"]
-        }
+        }*/
      },
     "variants": {
         "normal": [{}],
@@ -16,9 +20,13 @@
                 "rotation": { "y": 180 },
                 "thirdperson": {
                     "rotation": [ { "z": 170 }, { "y": -45 }, { "z": 20 } ],
-		            "translation": [ 0, 0.09375, -0.171875 ],
-		            "scale": 0.375
+                    "translation": [ 0, 0.09375, -0.171875 ],
+                    "scale": 0.375
                 }
+            },
+            "model": "forgedebugmodelanimation:engine",
+            "submodel": {
+                "ring": { "model": "forgedebugmodelanimation:engine_ring" }
             }
         }],
         "facing": {
@@ -31,14 +39,16 @@
         },
         "static": {
             "true": {
-                "custom": {
+                /*"custom": {
                     "mesh": ["Base"]
-                }
+                }*/
+                "model": "forgedebugmodelanimation:engine"
             },
             "false": {
-                "custom": {
+                /*"custom": {
                     "mesh": ["Lid"]
-                }
+                }*/
+                "model": "forgedebugmodelanimation:engine_ring"
             }
         }
     }

src/test/resources/assets/forgedebugmodelanimation/models/block/engine_ring.json

@@ -13,8 +13,8 @@
       }
     },
     {
-      "from": [ 4, 0, 4 ],
-      "to": [ 12, 4, 12 ],
+      "from": [ 4, 8, 4 ],
+      "to": [ 12, 12, 12 ],
       "faces": {
         "north": { "uv": [ 4, 8, 12, 12 ], "texture":"#chamber" },
         "south": { "uv": [ 4, 8, 12, 12 ], "texture":"#chamber" },

src/test/resources/assets/forgedebugmodelloaderregistry/blockstates/CustomModelBlock.json

@@ -6,7 +6,6 @@
             "#chest": "entity/chest/normal"
         },
         "model": "forgedebugmodelloaderregistry:chest.b3d",
-        "transform": "forge:default-block",
         "custom": {
             "mesh": ["Base", "Lid"]
         }
@@ -14,7 +13,14 @@
     "variants": {
         "normal": [{}],
         "inventory": [{
-            "y": 180
+            "transform": {
+                "rotation": { "y": 180 },
+                "thirdperson": {
+                    "rotation": [ { "z": 170 }, { "y": -45 }, { "z": 20 } ],
+                    "translation": [ 0, 0.09375, -0.171875 ],
+                    "scale": 0.375
+                }
+            }
         }],
         "facing": {
             "down": {"x": 90},