贪吃蛇 for python

yunger · 发表于 2020-4-8 22:06:28

[/free]import pygame,sys,time,random
from pygame.locals import *
# 定义颜色变量
redColour = pygame.Color(255,46,10)
blackColour = pygame.Color(0,0,16)
whiteColour = pygame.Color(255,55,255)
greyColour = pygame.Color(150,10,150)

# 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()

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