pthon贪吃蛇游戏详细代码

import pygame,sys,random,timefrom pygame.locals import * #从pygame模块导入常用的函数和常量#定义颜色变量black_colour = pygame.Color(0,0,0)white_colour = pygame.Color(255,255,255)red_colour = pygame.Color(255,0,0)grey_colour = pygame.Color(150,150,150)#定义游戏结束函数def GameOver(gamesurface): #设置提示字体的格式 GameOver_font = pygame.font.SysFont("MicrosoftYaHei", 16) #设置提示字体的颜色 GameOver_colour = GameOver_font.render('Game Over',True,grey_colour) #设置提示位置 GameOver_location = GameOver_colour.get_rect() GameOver_location.midtop = (320,10) #绑定以上设置到句柄 gamesurface.blit(GameOver_colour,GameOver_location) #提示运行信息 pygame.display.flip() #休眠5秒 time.sleep(5) #退出游戏 pygame.quit() #退出程序 sys.exit()#定义主函数def main(): #初始化pygame，为使用硬件做准备 pygame.init() pygame.time.Clock() ftpsClock = pygame.time.Clock() #创建一个窗口 gamesurface = pygame.display.set_mode((640,480)) #设置窗口的标题 pygame.display.set_caption('tanchishe snake') #初始化变量 #初始化贪吃蛇的起始位置 snakeposition = [100,100] #初始化贪吃蛇的长度 snakelength = [[100,100],[80,100],[60,100]] #初始化目标方块的位置 square_purpose = [300,300] #初始化一个数来判断目标方块是否存在 square_position = 1 #初始化方向，用来使贪吃蛇移动 derection = "right" change_derection = derection #进行游戏主循环 while True:  #检测按键等pygame事件  for event in pygame.event.get():   if event.type==QUIT:    #接收到退出事件后，退出程序    pygame.quit()    sys.exit()   elif event.type==KEYDOWN:    #判断键盘事件,用w,s,a,d来表示上下左右    if event.key==K_RIGHT or event.key==ord('d'):     change_derection = "right"    if event.key==K_LEFT or event.key==ord('a'):     change_derection = "left"    if event.key==K_UP or event.key==ord('w'):     change_derection = "up"    if event.key==K_DOWN or event.key==ord('s'):     change_derection = "down"    if event.key==K_ESCAPE:     pygame.event.post(pygame.event.Event(QUIT))  #判断移动的方向是否相反  if change_derection =='left'and not derection =='right':   derection = change_derection  if change_derection =='right'and not derection =='left':   derection = change_derection  if change_derection == 'up' and not derection =='down':   derection = change_derection  if change_derection == 'down' and not derection == 'up':   derection = change_derection  #根据方向，改变坐标  if derection == 'left':   snakeposition[0] -= 20  if derection == 'right':   snakeposition[0] += 20  if derection == 'up':   snakeposition[1] -= 20  if derection == 'down':   snakeposition[1] += 20  #增加蛇的长度  snakelength.insert(0,list(snakeposition))  #判断是否吃掉目标方块  if snakeposition[0]==square_purpose[0] and snakeposition[1]==square_purpose[1]:   square_position = 0  else:   snakelength.pop()  #重新生成目标方块  if square_position ==0:   #随机生成x,y,扩大二十倍，在窗口范围内   x = random.randrange(1,32)   y = random.randrange(1,24)   square_purpose = [int(x*20),int(y*20)]   square_position = 1  #绘制pygame显示层  gamesurface.fill(black_colour)  for position in snakelength:   pygame.draw.rect(gamesurface,white_colour,Rect(position[0],position[1],20,20))   pygame.draw.rect(gamesurface,red_colour,Rect(square_purpose[0],square_purpose[1],20,20))  #刷新pygame显示层  pygame.display.flip()  #判断是否死亡  if snakeposition[0]<0 or snakeposition[0]>620:   GameOver(gamesurface)  if snakeposition[1]<0 or snakeposition[1]>460:   GameOver(gamesurface)  for snakebody in snakelength[1:]:   if snakeposition[0]==snakebody[0] and snakeposition[1]==snakebody[1]:    GameOver(gamesurface)  #控制游戏速度  ftpsClock.tick(5) if __name__ == "__main__": main()