save project

snake.py

@@ -68,6 +68,9 @@ while True:
     else:
         z.pop(0)
     
+    if x<0 or x>630 or y>450 or y<0:
+        exit()
+
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
@@ -82,7 +85,7 @@ while True:
     test=my_font.render(info,True,(0,0,0))
     screen.blit(test,(540,10))
 
-    f.tick(8)
+    f.tick(6)
    
     # 刷新画面
     pygame.display.update()