save project

snake.py

 import pygame
 import random
 from pygame import locals
-
 # 初始化pygame，为使用硬件做准备
 pygame.init()
-
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 FPSCLOCK = pygame.time.Clock()  # pygame时钟，控制游戏速度（帧数）
-
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')      # 头 朝右
@@ -21,10 +18,8 @@ ay=360
 ax=360
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-
 setheading = "right"
 snake_head = right
-
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -51,10 +46,12 @@ while True:
     elif setheading == "up":
         y -= 30
     else:
-        y += 30
-    
+        y += 30  
     position.append((x, y))
-    position.pop(0)
+    if ay=30*random.randint(0,21)
+       ax=30*random.randint(0,15)
+    else:
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去