python贪吃蛇代码

下面是一个简单的Python贪吃蛇代码，希望能帮到你：

import pygame
import random

# 初始化pygame
pygame.init()

# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)
blue = (50, 153, 213)

# 设置屏幕大小和标题
display_width = 800
display_height = 600
game_display = pygame.display.set_mode((display_width, display_height))
pygame.display.set_caption('Snake Game')

# 设置时钟
clock = pygame.time.Clock()

# 定义蛇的大小和速度
snake_block = 10
snake_speed = 15

# 定义字体大小
font_style = pygame.font.SysFont(None, 30)


def message(msg, color):
    """
    显示提示信息
    """
    message_text = font_style.render(msg, True, color)
    game_display.blit(message_text, [display_width / 6, display_height / 3])


def game_loop():
    # 初始化蛇的位置和长度
    snake_list = []
    length_of_snake = 1

    # 初始化食物的位置
    food_x = round(random.randrange(0, display_width - snake_block) / 10.0) * 10.0
    food_y = round(random.randrange(0, display_height - snake_block) / 10.0) * 10.0

    # 初始化蛇的位置
    x1 = display_width / 2
    y1 = display_height / 2

    x1_change = 0
    y1_change = 0

    game_exit = False
    game_over = False

    while not game_exit:

        while game_over:
            game_display.fill(white)
            message("You Lost! Press Q-Quit or C-Play Again", red)
            pygame.display.update()

            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_exit = True
                        game_over = False
                    if event.key == pygame.K_c:
                        game_loop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_exit = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0

        # 判断蛇是否到达边界
        if x1 >= display_width or x1 < 0 or y1 >= display_height or y1 < 0:
            game_over = True

        # 更新蛇的位置
        x1 += x1_change
        y1 += y1_change

        # 填充背景色
        game_display.fill(black)

        # 绘制食物
        pygame.draw.rect(game_display, green, [food_x, food_y, snake_block, snake_block])

        # 更新蛇的位置列表
        snake_head = []
        snake_head.append(x1)
        snake_head.append(y1)
        snake_list.append(snake_head)

        # 当蛇的长度大于定义的长度时，删除蛇的位置列表中的第一个元素
        if len(snake_list) > length_of_snake:
            del snake_list[0]

        # 判断蛇头是否碰到蛇身
        for x in snake_list[:-1]:
            if x == snake_head:
                game_over = True

        # 绘制蛇
        for x in snake_list:
            pygame.draw.rect(game_display, blue, [x[0], x[1], snake_block, snake_block])

        # 更新屏幕
        pygame.display.update()

        # 当蛇头碰到食物时，更新食物的位置，蛇的长度加1
        if x1 == food_x and y1 == food_y:
            food_x = round(random.randrange(0, display_width - snake_block) / 10.0) * 10.0
            food_y = round(random.randrange(0, display_height - snake_block) / 10.0) * 10.0
            length_of_snake += 1

        # 设置蛇的速度
        clock.tick(snake_speed)

    # 退出pygame
    pygame.quit()

    # 退出程序
    quit()


# 启动游戏循环
game_loop()

这是一个基本的贪吃蛇游戏代码，你可以根据自己的需要进行修改和优化。