save project

snake.py

 import pygame
 from pygame import locals
-
+import random
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -22,7 +22,8 @@ position = [(180, 90), (180, 120), (210, 120), (x, y)]
 
 setheading = "right"
 snake_head = right
-
+ax=360
+ay=300
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -52,6 +53,9 @@ while True:
     else:
         y += 30
     position.append((x, y))
+    if x==ax and y==ay:
+        ax=random.randint(0,660)
+        ay=random.randint(0,480)
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))