Fixed crash when toggling pony rendering of certain mob types

src/main/java/com/minelittlepony/client/mixin/MixinEntityRenderers.java

@@ -0,0 +1,17 @@
+package com.minelittlepony.client.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+import java.util.Map;
+
+import net.minecraft.client.render.entity.EntityRendererFactory;
+import net.minecraft.client.render.entity.EntityRenderers;
+import net.minecraft.entity.EntityType;
+
+@Mixin(EntityRenderers.class)
+public interface MixinEntityRenderers {
+    @Accessor
+    public static Map<EntityType<?>, EntityRendererFactory<?>> getRendererFactories() {
+        return null;
+    }
+}

src/main/java/com/minelittlepony/client/render/MobRenderers.java

@@ -60,13 +60,13 @@ public final class MobRenderers {
         pony.switchRenderer(state, EntityType.STRIDER, ParaspriteRenderer::new);
     });
 
-    private final BiConsumer<Boolean, PonyRenderDispatcher> changer;
+    private final BiConsumer<MobRenderers, PonyRenderDispatcher> changer;
 
     public final String name;
 
     private boolean lastState;
 
-    private MobRenderers(String name, BiConsumer<Boolean, PonyRenderDispatcher> changer) {
+    private MobRenderers(String name, BiConsumer<MobRenderers, PonyRenderDispatcher> changer) {
         this.name = name;
         this.changer = changer;
     }
@@ -85,16 +85,15 @@ public final class MobRenderers {
         return option().get();
     }
 
-    public static MobRenderers register(String name, BiConsumer<Boolean, PonyRenderDispatcher> changer) {
+    public static MobRenderers register(String name, BiConsumer<MobRenderers, PonyRenderDispatcher> changer) {
         return REGISTRY.computeIfAbsent(name, n -> new MobRenderers(name, changer));
     }
 
     void apply(PonyRenderDispatcher dispatcher) {
         boolean state = get();
         if (state != lastState) {
-            MineLittlePony.logger.info(String.format("Ponify %s [%B] -> [%B]", name, lastState, state));
             lastState = state;
-            changer.accept(state, dispatcher);
+            changer.accept(this, dispatcher);
         }
     }
 }

src/main/java/com/minelittlepony/client/render/PonyRenderDispatcher.java

@@ -1,15 +1,13 @@
 package com.minelittlepony.client.render;
 
-import java.util.Map;
 import java.util.function.Function;
 
-import com.google.common.collect.Maps;
+import com.minelittlepony.client.mixin.MixinEntityRenderers;
 import com.minelittlepony.client.model.IPonyModel;
 import com.minelittlepony.client.model.entity.race.PlayerModels;
 
 import org.jetbrains.annotations.Nullable;
 
-import com.minelittlepony.common.mixin.MixinEntityRenderDispatcher;
 import com.minelittlepony.mson.api.Mson;
 
 import net.minecraft.client.MinecraftClient;
@@ -38,8 +36,6 @@ public class PonyRenderDispatcher {
 
     private LevitatingItemRenderer magicRenderer = new LevitatingItemRenderer();
 
-    private final Map<EntityType<?>, EntityRenderer<?>> renderMap = Maps.newHashMap();
-
     /**
      * Registers all new player skin types. (currently only pony and slimpony).
      */
@@ -71,18 +67,13 @@ public class PonyRenderDispatcher {
      * @param factory The replacement value
      * @param <T> The entity type
      */
-    @SuppressWarnings("unchecked")
+    <T extends Entity, V extends T> void switchRenderer(MobRenderers state, EntityType<V> type, Function<EntityRendererFactory.Context, EntityRenderer<T>> factory) {
-    <T extends Entity, V extends T> void switchRenderer(boolean state, EntityType<V> type, Function<EntityRendererFactory.Context, EntityRenderer<T>> factory) {
+        Mson.getInstance().getEntityRendererRegistry().registerEntityRenderer(type, ctx -> {
-        if (state) {
+            if (!state.get()) {
-            if (!renderMap.containsKey(type)) {
+                return MixinEntityRenderers.getRendererFactories().get(type).create(ctx);
-                renderMap.put(type, ((MixinEntityRenderDispatcher)MinecraftClient.getInstance().getEntityRenderDispatcher()).getEntityRenderers().get(type));
             }
-            Mson.getInstance().getEntityRendererRegistry().registerEntityRenderer(type, factory);
+            return factory.apply(ctx);
-        } else {
+        });
-            if (renderMap.containsKey(type)) {
-                Mson.getInstance().getEntityRendererRegistry().registerEntityRenderer(type, m -> (EntityRenderer<T>)renderMap.get(type));
-            }
-        }
     }
 
     public LevitatingItemRenderer getMagicRenderer() {

src/main/resources/minelp.mixin.json

@@ -9,6 +9,7 @@
         "MixinCamera",
         "MixinDefaultPlayerSkin",
         "MixinEntityRenderDispatcher",
+        "MixinEntityRenderers",
         "MixinSkullBlockEntityRenderer",
         "MixinFirstPersonRenderer",
         "MixinItemRenderer",