Fixed bug with tile cache not updating after map change

core/src/io/anuke/mindustry/Renderer.java

@@ -33,7 +33,6 @@ public class Renderer{
 		
 		//render the entire map
 		if(caches.size() == 0){
-			
 			for(int cx = 0; cx < chunksx; cx ++){
 				for(int cy = 0; cy < chunksy; cy ++){
 					Caches.begin(1600);
@@ -102,6 +101,13 @@ public class Renderer{
 		}
 	}
 	
+	public static void clearTiles(){
+		for(Cache cache : caches.values())
+			cache.dispose();
+		
+		caches.clear();
+	}
+	
 	public static void renderPixelOverlay(){
 		
 		if(player.recipe != null && (!ui.hasMouse() || android)){