python贪吃蛇

Python贪吃蛇是一个经典的小游戏，玩家需要操纵一条小蛇在游戏区域内移动，吃到食物后身体会变长，如果撞到墙壁或自己的身体就会游戏失败。以下是一个简单的Python贪吃蛇代码示例：

import pygame
import random

# 初始化Pygame
pygame.init()

# 设置游戏区域大小
width = 640
height = 480
screen = pygame.display.set_mode((width, height))

# 设置游戏标题
pygame.display.set_caption("Python贪吃蛇")

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

# 定义贪吃蛇和食物的大小
block_size = 10

# 定义字体
font = pygame.font.SysFont(None, 25)

# 定义函数，显示消息
def message(msg, color):
    screen_text = font.render(msg, True, color)
    screen.blit(screen_text, [width/6, height/3])

# 定义函数，绘制贪吃蛇
def snake(block_size, snake_list):
    for x in snake_list:
        pygame.draw.rect(screen, black, [x[0], x[1], block_size, block_size])

# 定义主函数
def main():
    game_over = False
    game_close = False

    # 初始化贪吃蛇的位置和长度
    lead_x = width/2
    lead_y = height/2
    lead_x_change = 0
    lead_y_change = 0
    snake_list = []
    snake_length = 1

    # 初始化食物的位置
    rand_food_x = round(random.randrange(0, width-block_size)/10.0)*10.0
    rand_food_y = round(random.randrange(0, height-block_size)/10.0)*10.0

    # 游戏循环
    while not game_over:

        # 如果游戏结束，显示消息
        while game_close == True:
            screen.fill(white)
            message("游戏结束！按Q-退出或C-重新开始", red)
            pygame.display.update()

            # 监听键盘事件
            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        main()

        # 监听键盘事件
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = 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

        # 判断是否撞墙
        if lead_x >= width or lead_x < 0 or lead_y >= height or lead_y < 0:
            game_close = True

        # 修改贪吃蛇的位置
        lead_x += lead_x_change
        lead_y += lead_y_change

        # 绘制食物
        pygame.draw.rect(screen, red, [rand_food_x, rand_food_y, block_size, block_size])

        # 绘制贪吃蛇
        snake_head = []
        snake_head.append(lead_x)
        snake_head.append(lead_y)
        snake_list.append(snake_head)
        if len(snake_list) > snake_length:
            del snake_list[0]

        # 判断是否撞到自己的身体
        for x in snake_list[:-1]:
            if x == snake_head:
                game_close = True

        snake(block_size, snake_list)
        pygame.display.update()

        # 如果吃到食物，贪吃蛇变长
        if lead_x == rand_food_x and lead_y == rand_food_y:
            rand_food_x = round(random.randrange(0, width-block_size)/10.0)*10.0
            rand_food_y = round(random.randrange(0, height-block_size)/10.0)*10.0
            snake_length += 1

        # 设置游戏刷新率
        clock = pygame.time.Clock()
        clock.tick(20)

    # 退出Pygame
    pygame.quit()

# 运行主函数
main()

这是一个比较简单的Python贪吃蛇代码，可以通过修改代码来增加游戏的难度和功能。