save project

snake.py

@@ -64,6 +64,10 @@ while True:
         score +=10
         score +=10
     else:       
     else:       
         position.pop(0)
         position.pop(0)
+
+    if x <0 or x >630 or y<0 or y >630:
+        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