save project

my_game.py

@@ -87,6 +87,8 @@ while True:
     for sprite in block_list:
     for sprite in block_list:
         sprite.rect.x -= 8
         sprite.rect.x -= 8
         screen.blit(sprite.image, (sprite.rect.x, sprite.rect.y)) 
         screen.blit(sprite.image, (sprite.rect.x, sprite.rect.y)) 
-    # 刷新画面
+        if sprite.rect.x <= 0-sprite.rect.width:
+            sprite.kill()
+   # 刷新画面
     pygame.display.update()
     pygame.display.update()
     FPS.tick(60)
     FPS.tick(60)
\ No newline at end of file