用Pygame制作简单的贪吃蛇

前言

Python Pygame 是一款专门为开发和设计 2D 电子游戏而生的软件包，它支 Windows、Linux、Mac OS 等操作系统，具有良好的跨平台性。Pygame 由  Pete Shinners 于 2000 年开发而成，是一款免费、开源的的软件包，因此您可以放心地使用它来开发游戏，不用担心有任何费用产生。
Pygame 在 SDL（Simple DirectMedia Layer，使用 C语言编写的多媒体开发库） 的基础上开发而成，它提供了诸多操作模块，比如图像模块（image）、声音模块（mixer）、输入/输出（鼠标、键盘、显示屏）模块等。

环境配置 

简单的贪吃蛇实现

#!/usr/bin/env python
# -*- coding: utf-8 -*-



import pygame,sys,random

from pygame.locals import *


redColour = pygame.Color(255,0,0)

blackColour = pygame.Color(0,0,0)

whiteColour = pygame.Color(255,255,255)



def gameOver():

    pygame.quit()
    sys.exit()


def main():

    pygame.init()

    fpsClock = pygame.time.Clock()


    playSurface = pygame.display.set_mode((640,480)) # 创建游戏界面的大小
    pygame.display.set_caption('贪吃蛇') # 创建游戏标题


    snakePosition = [100,100]

    snakeBody = [[100,100],[80,100],[60,100]]

    targetPosition = [300,300]

    targetflag = 1

    direction = 'right'

    changeDirection = direction


    while True:

        for event in pygame.event.get():
            if event.type == QUIT:
                pygame.quit()
                sys.exit()

            elif event.type == KEYDOWN:

                if event.key == K_RIGHT or event.key == ord('d'):
                    changeDirection = 'right'
                if event.key == K_LEFT or event.key == ord('a'):
                    changeDirection = 'left'
                if event.key == K_UP or event.key == ord('w'):
                    changeDirection = 'up'
                if event.key == K_DOWN or event.key == ord('s'):
                    changeDirection = 'down'

                if event.key == K_ESCAPE:
                    pygame.event.post(pygame.event.Event(QUIT))


        if changeDirection == 'left' and not direction == 'right':
            direction = changeDirection
        if changeDirection == 'right' and not direction == 'left':
            direction = changeDirection
        if changeDirection == 'up' and not direction == 'down':
            direction = changeDirection
        if changeDirection == 'down' and not direction == 'up':
            direction = changeDirection

        #3.7 根据方向移动蛇头的坐标
        if direction == 'right':
            snakePosition[0] += 20
        if direction == 'left':
            snakePosition[0] -= 20
        if direction == 'up':
            snakePosition[1] -= 20
        if direction == 'down':
            snakePosition[1] += 20

        snakeBody.insert(0,list(snakePosition))

        if snakePosition[0] == targetPosition[0] and snakePosition[1] == targetPosition[1]:
            targetflag = 0
        else:
            snakeBody.pop()

        if targetflag == 0:
            x = random.randrange(1,32)
            y = random.randrange(1,24)
            targetPosition = [int(x*20),int(y*20)]
            targetflag = 1

        playSurface.fill(blackColour)
        for position in snakeBody: 
            pygame.draw.rect(playSurface,whiteColour,Rect(position[0],position[1],20,20))#画蛇
            pygame.draw.rect(playSurface,redColour,Rect(targetPosition[0], targetPosition[1],20,20)) #画目标方块


        pygame.display.flip()

        if snakePosition[0] > 620 or snakePosition[0] < 0:
            gameOver()
        elif snakePosition[1] > 460 or snakePosition[1] < 0:
            gameOver()

        fpsClock.tick(5)


if __name__ == "__main__":
    main()

 结果展示