Clear the debug wireframes after leaving the current world.

core/src/main/java/com/seibel/distanthorizons/core/api/internal/SharedApi.java

@@ -25,6 +25,7 @@ import com.seibel.distanthorizons.core.dataObjects.transformers.ChunkToLodBuilde
 import com.seibel.distanthorizons.core.dataObjects.transformers.FullDataToRenderDataTransformer;
 import com.seibel.distanthorizons.core.file.fullDatafile.FullDataFileHandler;
 import com.seibel.distanthorizons.core.generation.WorldGenerationQueue;
+import com.seibel.distanthorizons.core.render.renderer.DebugRenderer;
 import com.seibel.distanthorizons.core.world.*;
 
 /** Contains code and variables used by both {@link ClientApi} and {@link ServerApi} */
@@ -67,6 +68,8 @@ public class SharedApi
 			WorldGenerationQueue.shutdownWorldGenThreadPool();
 			ChunkToLodBuilder.shutdownExecutorService();
 			
+			DebugRenderer.clearRenderables();
+			
 			// recommend that the garbage collector cleans up any objects from the old world
 			System.gc();
 		}

core/src/main/java/com/seibel/distanthorizons/core/render/renderer/DebugRenderer.java

@@ -264,26 +264,28 @@ public class DebugRenderer
 	
 	private void removeRenderer(IDebugRenderable r)
 	{
-		synchronized (renderers)
+		synchronized (this.renderers)
 		{
-			Iterator<WeakReference<IDebugRenderable>> it = renderers.iterator();
-			while (it.hasNext())
+			Iterator<WeakReference<IDebugRenderable>> iterator = this.renderers.iterator();
+			while (iterator.hasNext())
 			{
-				WeakReference<IDebugRenderable> ref = it.next();
-				if (ref.get() == null)
+				WeakReference<IDebugRenderable> renderableRef = iterator.next();
+				if (renderableRef.get() == null)
 				{
-					it.remove();
+					iterator.remove();
 					continue;
 				}
-				if (ref.get() == r)
+				if (renderableRef.get() == r)
 				{
-					it.remove();
+					iterator.remove();
 					return;
 				}
 			}
 		}
 	}
 	
+	public static void clearRenderables() { INSTANCE.renderers.clear(); }
+	
 	public void init()
 	{
 		if (init) return;