save project

snake.py

@@ -62,8 +62,7 @@ while True:
         y2 = random.randint(0,15)*30
     else:    
         position.pop(0)
-    if x < 0 or x > 630 or y < 0 or y > 450:
-        exit()
+    
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -79,6 +78,3 @@ while True:
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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-
-
-    
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