save project

snake.py

@@ -63,8 +63,7 @@ while True:
     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