final changes for better touch function

main.py

@@ -80,6 +80,7 @@ def touch(event):
     if event.type == pygame.FINGERDOWN and not touch_start:
         touch_start = (event.x * SCREEN_WIDTH, event.y * SCREEN_HEIGHT)
         touch_start_time = time.time()
+        print("touch_start:")
         return None
 
     elif event.type == pygame.FINGERUP and touch_start:
@@ -87,6 +88,7 @@ def touch(event):
         duration = time.time() - touch_start_time
         dx = end[0] - touch_start[0]
         dy = end[1] - touch_start[1]
+        print("touch_end:")
         print(f"Touch dx={dx}, dy={dy}, duration={duration}")
 
         touch_start = None
@@ -99,6 +101,7 @@ def touch(event):
         elif dy < -50 and abs(dx) < 80 and duration > 0.3:
             return "ontop"
         else:
+            print("touch_problem")
             return None