基于python的贪吃蛇代码

以下是基于Python的贪吃蛇代码，包括游戏界面的设计、蛇的移动、食物的生成等功能：

import pygame
import random

# 初始化pygame
pygame.init()

# 定义游戏界面大小
play_width = 600  
play_height = 400

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

# 创建游戏界面
game_display = pygame.display.set_mode((play_width, play_height))
pygame.display.set_caption("贪吃蛇游戏")

# 设置游戏界面的时钟
clock = pygame.time.Clock()

# 定义蛇的大小
snake_block = 10

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

# 定义分数的显示函数
def score(score):
    value = font_style.render("得分：" + str(score), True, white)
    game_display.blit(value, [0, 0])

# 定义蛇的移动函数
def snake(snake_block, snake_list):
    for x in snake_list:
        pygame.draw.rect(game_display, green, [x[0], x[1], snake_block, snake_block])

# 定义游戏结束的函数
def message(msg, color):
    mesg = font_style.render(msg, True, color)
    game_display.blit(mesg, [play_width/6, play_height/3])

# 定义游戏主函数
def game_loop():
    game_exit = False
    game_over = False

    # 定义蛇的初始位置和长度
    x1 = play_width / 2
    y1 = play_height / 2
    x1_change = 0       
    y1_change = 0
    snake_List = []
    Length_of_snake = 1

    # 定义食物的初始位置
    foodx = round(random.randrange(0, play_width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, play_height - snake_block) / 10.0) * 10.0

    while not game_exit:

        # 如果游戏结束，显示分数和提示语
        while game_over == True:
            game_display.fill(black)
            message("游戏结束！按Q退出，按C重新开始游戏", red)
            score(Length_of_snake - 1)
            pygame.display.update()

            # 判断是否按下按键
            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()

        # 判断是否按下按键
        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

        # 判断是否撞到墙壁
        if x1 >= play_width or x1 < 0 or y1 >= play_height or y1 < 0:
            game_over = True

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

        # 绘制游戏界面
        game_display.fill(black)
        pygame.draw.rect(game_display, blue, [foodx, foody, snake_block, snake_block])
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Length_of_snake:
            del snake_List[0]

        # 判断是否吃到食物
        for x in snake_List[:-1]:
            if x == snake_Head:
                game_over = True
        snake(snake_block, snake_List)
        score(Length_of_snake - 1)
        pygame.display.update()

        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, play_width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, play_height - snake_block) / 10.0) * 10.0
            Length_of_snake += 1

        # 设置游戏界面的帧率
        clock.tick(15)

    # 退出pygame
    pygame.quit()

# 运行游戏主函数
game_loop()

这个代码中，游戏界面的大小为600x400，蛇的大小为10x10，游戏界面的帧率为15帧。游戏中通过键盘控制蛇的移动，如果撞到墙壁或者自己的身体，游戏结束，如果吃到食物，蛇的长度增加。游戏结束后可以按Q退出，按C重新开始游戏。