python贪吃蛇编程代码

以下是一个简单的Python贪吃蛇游戏代码示例：

import pygame
import random

# 初始化 pygame
pygame.init()

# 窗口大小
width = 500
height = 500

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

# 创建窗口
window = pygame.display.set_mode((width, height))
pygame.display.set_caption("贪吃蛇游戏")

# 蛇的大小
snake_size = 10

# 蛇的移动速度
snake_speed = 15

# 字体
font = pygame.font.SysFont(None, 30)


# 显示文字函数
def message(msg, color):
    text = font.render(msg, True, color)
    window.blit(text, [width / 6, height / 3])


# 绘制蛇的函数
def draw_snake(snake_size, snake_pixels):
    for pixel in snake_pixels:
        pygame.draw.rect(window, black, [pixel[0], pixel[1], snake_size, snake_size])


# 游戏循环
def game_loop():
    # 蛇的初始位置
    x = width / 2
    y = height / 2

    # 蛇的移动方向
    x_change = 0
    y_change = 0

    # 食物的初始位置
    food_x = round(random.randrange(0, width - snake_size) / 10.0) * 10.0
    food_y = round(random.randrange(0, height - snake_size) / 10.0) * 10.0

    # 蛇的初始长度
    snake_pixels = []
    snake_length = 1

    # 游戏结束标志
    game_over = False

    # 游戏循环
    while not game_over:
        # 处理事件
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x_change = -snake_size
                    y_change = 0
                elif event.key == pygame.K_RIGHT:
                    x_change = snake_size
                    y_change = 0
                elif event.key == pygame.K_UP:
                    y_change = -snake_size
                    x_change = 0
                elif event.key == pygame.K_DOWN:
                    y_change = snake_size
                    x_change = 0

        # 移动蛇的位置
        x += x_change
        y += y_change

        # 判断是否吃到食物
        if x == food_x and y == food_y:
            food_x = round(random.randrange(0, width - snake_size) / 10.0) * 10.0
            food_y = round(random.randrange(0, height - snake_size) / 10.0) * 10.0
            snake_length += 1

        # 绘制窗口
        window.fill(white)

        # 绘制食物
        pygame.draw.rect(window, red, [food_x, food_y, snake_size, snake_size])

        # 判断游戏是否结束
        if x >= width or x < 0 or y >= height or y < 0:
            game_over = True

        # 更新蛇的位置
        snake_head = []
        snake_head.append(x)
        snake_head.append(y)
        snake_pixels.append(snake_head)

        if len(snake_pixels) > snake_length:
            del snake_pixels[0]

        # 判断蛇是否碰到自己
        for pixel in snake_pixels[:-1]:
            if pixel == snake_head:
                game_over = True

        # 绘制蛇
        draw_snake(snake_size, snake_pixels)

        # 刷新窗口
        pygame.display.update()

        # 控制游戏速度
        pygame.time.Clock().tick(snake_speed)

    # 显示游戏结束文字
    message("游戏结束，按 Q 退出，按 C 重新开始", red)
    pygame.display.update()

    # 游戏结束
    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_q:
                    pygame.quit()
                    quit()
                elif event.key == pygame.K_c:
                    game_loop()


# 开始游戏
game_loop()

这个代码实现了基本的贪吃蛇游戏，玩家通过方向键控制蛇的移动，吃到食物后蛇的长度会增加，当蛇碰到窗口边缘或碰到自己时游戏结束。