final changes for better touch function

main.py

@@ -76,7 +76,7 @@ case_images = {}
 def touch(event):
     global touch_start, touch_start_time
 
-    if event.type == pygame.FINGERDOWN:
+    if event.type == pygame.FINGERDOWN and not touch_start:
         touch_start = (event.x * SCREEN_WIDTH, event.y * SCREEN_HEIGHT)
         touch_start_time = time.time()
         return None