用python如何写一个贪吃蛇游戏

你可以使用Python的pygame模块来编写贪吃蛇游戏。以下是一个简单的示例代码：

import pygame
import time
import random

pygame.init()

# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)

# 设置游戏窗口
width = 800
height = 600
gameDisplay = pygame.display.set_mode((width, height))
pygame.display.set_caption('贪吃蛇游戏')

# 设置游戏时钟
clock = pygame.time.Clock()

block_size = 10

# 定义字体
font_style = pygame.font.SysFont(None, 50)


def message(msg, color):
    """
    显示消息
    :param msg: 消息
    :param color: 字体颜色
    """
    message_surface = font_style.render(msg, True, color)
    gameDisplay.blit(message_surface, [width / 6, height / 3])


def gameLoop():
    # 初始化贪吃蛇位置和移动方向
    lead_x = width / 2
    lead_y = height / 2
    lead_x_change = 0
    lead_y_change = 0

    # 初始化食物位置
    food_x = round(random.randrange(0, width - block_size) / 10.0) * 10.0
    food_y = round(random.randrange(0, height - block_size) / 10.0) * 10.0

    gameExit = False
    gameOver = False

    while not gameExit:

        while gameOver:
            gameDisplay.fill(white)
            message("游戏结束，按Q退出，按C重新开始", red)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        gameExit = True
                        gameOver = False
                    if event.key == pygame.K_c:
                        gameLoop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                gameExit = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    lead_x_change = -block_size
                    lead_y_change = 0
                elif event.key == pygame.K_RIGHT:
                    lead_x_change = block_size
                    lead_y_change = 0
                elif event.key == pygame.K_UP:
                    lead_y_change = -block_size
                    lead_x_change = 0
                elif event.key == pygame.K_DOWN:
                    lead_y_change = block_size
                    lead_x_change = 0

        # 判断贪吃蛇是否撞到墙壁
        if lead_x >= width or lead_x < 0 or lead_y >= height or lead_y < 0:
            gameOver = True

        # 移动贪吃蛇
        lead_x += lead_x_change
        lead_y += lead_y_change

        # 填充背景色
        gameDisplay.fill(white)

        # 画食物
        pygame.draw.rect(gameDisplay, red, [food_x, food_y, block_size, block_size])

        # 画贪吃蛇
        pygame.draw.rect(gameDisplay, black, [lead_x, lead_y, block_size, block_size])

        # 判断贪吃蛇是否吃到了食物
        if lead_x == food_x and lead_y == food_y:
            food_x = round(random.randrange(0, width - block_size) / 10.0) * 10.0
            food_y = round(random.randrange(0, height - block_size) / 10.0) * 10.0

        pygame.display.update()

        # 设置游戏时钟，控制游戏速度
        clock.tick(15)

    # 退出pygame
    pygame.quit()

    # 退出程序
    quit()


gameLoop()

希望能对你有所帮助！