save project

snake.py

@@ -27,6 +27,7 @@ snake_head = right
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
+           
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
         if event.type == locals.KEYDOWN:
         if event.type == locals.KEYDOWN:
@@ -63,6 +64,9 @@ while True:
         apple_y=30*num2-30
         apple_y=30*num2-30
     else:
     else:
         position.pop(0)
         position.pop(0)
+    if x <0 or x>630 or y <0 or y >450:
+        exit()
+
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     # 将贪吃蛇的头画上去