save project

snake.py

@@ -14,7 +14,7 @@ food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 x=240
 y=120
-
+f=pygame.time.Clock()
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -31,6 +31,7 @@ while True:
     # 将果实画上去
     screen.blit(food, (360, 300))
     x+=30
-    y+=30    
+    y+=30
+    f.tick(5)
     # 刷新画面
     pygame.display.update()
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