贪吃蛇游戏

# 这是新建文件1.py
# 这是新建文件贪吃蛇.py
import pygame,sys,time,random
from pygame.locals import *
pygame.init()

redColor = pygame.Color(255,0,0)
blackColor = pygame.Color(0,0,0)
whiteColor = pygame.Color(255,255,255)
greyColor = pygame.Color(150,150,150)

fpsClock = pygame.time.Clock()
playSurface = pygame.display.set_mode((640,480))
pygame.display.set_caption('Raspberry Snake')
def gameOver(playSurface):
    gameOverFont = pygame.font.SysFont('arial',72)
    gameOverSurf = gameOverFont.render('Game Over',True,greyColor)
    gameOverRect = gameOverSurf.get_rect()
    gameOverRect.midtop = (320,10)
    playSurface.blit(gameOverSurf,gameOverRect)
    pygame.display.flip()
    time.sleep(5)
    pygame.quit()
    sys.exit()
 
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:
            pygame.quit()
            sys.exit()
        elif event.type == KEYDOWN:
            if event.key == K_RIGHT or event.key == K_d:
                changeDirection = 'right'
            if event.key == K_LEFT or event.key == K_a:
                changeDirection = 'left'
            if event.key == K_UP or event.key == K_w:
                changeDirection = 'up'
            if event.key == K_DOWN or event.key == K_s:
                changeDirection = 'down'
            if event.key == K_ESCAPE:
                pygame.event.post(pygame.event.Event(QUIT))
    # 确定方向
    if changeDirection == 'right' and not direction == 'left':
        direction = changeDirection
    elif changeDirection == 'left' and not direction == 'right':
        direction = changeDirection
    elif changeDirection == 'up' and not direction == 'down':
        direction = changeDirection
    elif changeDirection == 'down' and not direction == 'up':
        direction = changeDirection
    # 根据方向移动蛇头
    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))
    # 如果贪吃蛇和目标方块的位置重合
    if snakePosition[0] == raspberryPosition[0] and snakePosition[1] == raspberryPosition[1]:
        raspberrySpawned = 0
    else:
        snakeSegments.pop()
    if raspberrySpawned== 0:
        x = random.randrange(1,32)
        y = random.randrange(1,24)
        raspberryPosition = [int(x * 20),int(y * 20)]
        raspberrySpawned = 1
    playSurface.fill(blackColor)
    for position in snakeSegments:
        pygame.draw.rect(playSurface,whiteColor,Rect(position[0],position[1],20,20))
        pygame.draw.rect(playSurface,redColor,Rect(raspberryPosition[0],raspberryPosition[1],20,20))
    pygame.display.flip()
    # 判断游戏是否结束
    if snakePosition[0] > 620 or snakePosition[0] < 0:
        gameOver(playSurface)
    elif 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(3)