教你用Python实现贪吃蛇游戏

  贪吃蛇游戏是一款非常非常经典的益智游戏，有PC和手机等多平台版本。这个游戏既简单又耐玩，主要是通过控制蛇头方向吃蛋，从而使得蛇变得越来越长。想想小时候我还经常用摩托罗拉手机玩。下面介绍的是利用Python代码实现这个游戏。

一、配置

1、Python 2.7版本（Python3.X版本未知）

2、Anaconda

3、依赖库：pygame

windows安装方法：pip install pygame

（如果在Linux系统下提示权限不够，可以使用sudo pip install pygame进行安装）

二、代码

#!/usr/bin/env pythonimport pygame,sys,time,randomfrom pygame.locals import *# 定义颜色变量redColour = pygame.Color(255,0,0)blackColour = pygame.Color(0,0,0)whiteColour = pygame.Color(255,255,255)greyColour = pygame.Color(150,150,150)# 定义gameOver函数def gameOver(playSurface): gameOverFont = pygame.font.Font('arial.ttf',72) gameOverSurf = gameOverFont.render('Game Over', True, greyColour) gameOverRect = gameOverSurf.get_rect() gameOverRect.midtop = (320, 10) playSurface.blit(gameOverSurf, gameOverRect) pygame.display.flip() time.sleep(5) pygame.quit() sys.exit()# 定义main函数def main(): # 初始化pygame pygame.init() fpsClock = pygame.time.Clock() # 创建pygame显示层 playSurface = pygame.display.set_mode((640,480)) pygame.display.set_caption('Raspberry Snake') # 初始化变量 snakePosition = [100,100] snakeSegments = [[100,100],[80,100],[60,100]] raspberryPosition = [300,300] raspberrySpawned = 1 direction = 'right' changeDirection = direction while True: # 检测例如按键等pygame事件 for event in pygame.event.get(): if event.type == QUIT: pygame.quit() sys.exit() elif event.type == KEYDOWN: # 判断键盘事件 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)) # 判断是否输入了反方向 if changeDirection == 'right' and not direction == 'left': direction = changeDirection if changeDirection == 'left' and not direction == 'right': direction = changeDirection if changeDirection == 'up' and not direction == 'down': direction = changeDirection if changeDirection == 'down' and not direction == 'up': direction = changeDirection # 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 # 增加蛇的长度 snakeSegments.insert(0,list(snakePosition)) # 判断是否吃掉了树莓 if snakePosition[0] == raspberryPosition[0] and snakePosition[1] == raspberryPosition[1]: raspberrySpawned = 0 else: snakeSegments.pop() # 如果吃掉树莓，则重新生成树莓 if raspberrySpawned == 0: x = random.randrange(1,32) y = random.randrange(1,24) raspberryPosition = [int(x*20),int(y*20)] raspberrySpawned = 1 # 绘制pygame显示层 playSurface.fill(blackColour) for position in snakeSegments: pygame.draw.rect(playSurface,whiteColour,Rect(position[0],position[1],20,20)) pygame.draw.rect(playSurface,redColour,Rect(raspberryPosition[0], raspberryPosition[1],20,20)) # 刷新pygame显示层 pygame.display.flip() # 判断是否死亡 if snakePosition[0] > 620 or snakePosition[0] 460 or snakePosition[1]

三、效果图

  正如你所看到的，这些代码所实现的蛇和蛋都非常抽象，背景也很单调。你完全可以在这个项目的基础上进行更多的创作，赶紧动动手，做一款你自己研发的单机小游戏吧~