save project

snake.py

@@ -45,6 +45,10 @@ while True:
     for i in position[:-1]:
        if i==(x,y):
            exit()
+    if x>630 or x<0 or y>450 or y<0:
+        exit()
+    else:
+
             
     # 设置贪吃蛇的头部坐标
         if setheading == "right":