python实现贪吃蛇游戏

#!/usr/bin/env python import pygame,sys,time,random from 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] < 0:
            gameOver(playSurface) if snakePosition[1] > 460 or snakePosition[1] < 0: for snakeBody in snakeSegments[1:]: if snakePosition[0] == snakeBody[0] and snakePosition[1] == snakeBody[1]:
                    gameOver(playSurface) # 控制游戏速度  fpsClock.tick(5) if __name__ == "__main__":
    main()