From a649cce2ea708c7a04bb4f950c00323c9dc3b978 Mon Sep 17 00:00:00 2001
From: RainWarrior <rainwarrior@fry.su>
Date: Sun, 5 Jun 2016 10:14:44 +0300
Subject: [PATCH] Modified SimpleModelState to ignore the parts it doesn't know
 about. Fixes model part hiding always applying to some models when
 transformations are specified in the blockstate json.

---
 .../minecraftforge/client/model/SimpleModelState.java    | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main/java/net/minecraftforge/client/model/SimpleModelState.java b/src/main/java/net/minecraftforge/client/model/SimpleModelState.java
index 2f52a660ea..9497605a59 100644
--- a/src/main/java/net/minecraftforge/client/model/SimpleModelState.java
+++ b/src/main/java/net/minecraftforge/client/model/SimpleModelState.java
@@ -28,7 +28,14 @@ public final class SimpleModelState implements IModelState
 
     public Optional<TRSRTransformation> apply(Optional<? extends IModelPart> part)
     {
-        if(!part.isPresent() || !map.containsKey(part.get())) return def;
+        if(!part.isPresent())
+        {
+            return def;
+        }
+        if(!map.containsKey(part.get()))
+        {
+            return Optional.absent();
+        }
         return Optional.fromNullable(map.get(part.get()));
     }
 }