python实现贪吃蛇游戏

#!/usr/bin/env python#__*__ coding: utf-8 __*__ import pygame,sys,time,randomfrom pygame.locals import *  redColour = pygame.Color(255,0,0)blackColour = pygame.Color(0,0,0)whiteColour = pygame.Color(255,255,255)greyColour = pygame.Color(150,150,150) 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() def main(): pygame.init() playSurface = pygame.display.set_mode((640,480)) fpsClock = pygame.time.Clock() pygame.display.set_caption('Snake Liu')  snakePosition = [100,100] snakeSegments = [[100,100],[80,100],[60,100]] raspberryPosition = [300,300] raspberrySpawned = 1 direction = 'right' changeDirection = direction while True: for event in pygame.event.get():  if event.type == 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)) # 判断是否输入了反方向,与原文有改动 if changeDirection == 'right':  direction = changeDirection if changeDirection == 'left':  direction = changeDirection if changeDirection == 'up':  direction = changeDirection if changeDirection == 'down':  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  # 刷新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)) pygame.display.flip()  # 判断是否死亡，后面几行和原文有改动 if snakePosition[0] > 620 or snakePosition[0] < 0:  gameOver(playSurface) if snakePosition[1] > 460 or snakePosition[1] < 0:  gameOver(playSurface) for snakeBody in snakeSegments[1:]:  if snakePosition[0] == snakeBody[0] and snakePosition[1] == snakeBody[1]:  gameOver(playSurface) fpsClock.tick(5)if __name__ == "__main__": main()