Couldn't beat graphic bugs with sprite caching. Returned to old way. Need to create branch with sprite caching and try to finish it.

common.py

@@ -9,4 +9,13 @@ import pygame
 def scale_image(image, n):
     orig_size = image.get_size()
     new_size = (int(orig_size[0] * n), int(orig_size[1] * n))
-    return pygame.transform.smoothscale(image, new_size)
+    return pygame.transform.smoothscale(image, new_size)
+
+def path_exists(data, path):
+    current = data
+    for key in path:
+        if isinstance(current, dict) and key in current:
+            current = current[key]
+        else:
+            return False
+    return True