import pygame
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')
food = pygame.image.load('apple.png')
body = pygame.image.load('body.png')

x, y = 240, 120   #

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()
    x += 30   #
    # 将背景图画上去
    screen.blit(background, (0, 0))
    # 将贪吃蛇画上去
    screen.blit(right, (x, y))  #
    # 将贪吃蛇的身体画上去
    screen.blit(body, (210, 120))
    screen.blit(body, (180, 120))
    screen.blit(body, (180, 90))
    # 将果实画上去
    screen.blit(food, (360, 300))
    # 刷新画面
    pygame.display.update()
    FPSCLOCK.tick(3)