save project

snake.py

 import pygame
+import random
 from pygame import locals
 
 # 初始化pygame，为使用硬件做准备
@@ -12,13 +13,31 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-
+x,y =240,120
+positon=[(180,90),(180,120),(210,120),(x,y)]
+apple_x = random.randint(0,660)
+apple_y = random.randint(0,480)
+setheading = "right"
+x += 30
+positon.append((x,y))
+positon.pop(0)
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-            
+        if event.type == locals.KEYDOWN:
+           if event.key == locals.K_RIGHT setheading !="left":
+                setheading = 'right'
+           if event.key == locals.K_LEFT setheading !="right":
+                setheading = 'left'
+           if event.key == locals.K_DOWN setheading !="up":
+                setheading = 'down'
+           if event.key == locals.K_UP setheading !="down":
+                setheading = 'up'
+      x += 30
+        positon.append((x,y))
+        positon.pop(0)            
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
@@ -28,6 +47,6 @@ while True:
     screen.blit(body, (180, 120))
     screen.blit(body, (180, 90))
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x,apple_y)
     # 刷新画面
     pygame.display.update()