auto save

snake.py

 import pygame
 from pygame import locals
+import random
 
 # 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）
 
+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
 food = pygame.image.load('apple.png')       # 食物 苹果
-body = pygame.image.load('body.png')        # 身体
-left = pygame.image.load('left.png')        # 头 朝左
-up = pygame.image.load('up.png')            # 头 朝上
-down = pygame.image.load('down.png')        # 头 朝下
+body = pygame.image.load('body.png')
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
+apple_x=360
+apple_y=300
 
 setheading = "right"
 snake_head = right
@@ -28,7 +31,7 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-        if event.type == locals.KEYDOWN:
+        elif event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT and setheading != "left":
                 setheading = 'right'
                 snake_head = right
@@ -53,6 +56,11 @@ while True:
         y += 30
     position.append((x, y))
     position.pop(0)
+    if apple_x == x and apple_y == y:
+        num1=random(1,16)
+        num2=random(1,32)
+        apple_x=30*num1
+        apple_y=30*num2
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -62,7 +70,8 @@ while True:
         screen.blit(body, position[i])
 
     # 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()
+    
     FPSCLOCK.tick(3)