1.源码

开发库使用：pygame random
直接在终端运行：pip install pygame
pycharm安装库：文件-设置-项目-Python 解释器

import pygame
import random

# 初始化pygame
pygame.init()

# 设置窗口大小
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))

# 设置标题
pygame.display.set_caption("Snake Game")

# 设置蛇的初始位置
snake_x = 350
snake_y = 350

# 设置蛇的速度
snake_speed = 20

# 设置蛇的身体
snake_body = [(snake_x, snake_y)]

# 设置食物的位置
food_x = random.randint(0, screen_width - 10)
food_y = random.randint(0, screen_height - 10)

# 设置字体
font = pygame.font.SysFont(None, 25)

# 设置游戏结束标志
game_over = False

# 游戏主循环
while not game_over:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                snake_y -= snake_speed
            elif event.key == pygame.K_DOWN:
                snake_y += snake_speed
            elif event.key == pygame.K_LEFT:
                snake_x -= snake_speed
            elif event.key == pygame.K_RIGHT:
                snake_x += snake_speed

    # 移动蛇的身体
    snake_body.insert(0, (snake_x, snake_y))

    # 检查蛇是否碰到墙壁
    if snake_x < 0 or snake_x >= screen_width - 10 or snake_y < 0 or snake_y >= screen_height - 10:
        game_over = True

    # 检查蛇是否碰到自己
    #if蛇身体中的任何两个点重叠：
     #   game_over = True

    # 检查蛇是否吃到食物
    if snake_x == food_x and snake_y == food_y:
        food_x = random.randint(0, screen_width - 10)
        food_y = random.randint(0, screen_height - 10)
        snake_body.append((food_x, food_y))

    # 绘制背景
    screen.fill((0, 0, 0))

    # 绘制蛇的身体
    for x, y in snake_body[1:]:
        pygame.draw.rect(screen, (0, 255, 0), (x, y, 10, 10))

    # 绘制食物
    pygame.draw.rect(screen, (255, 0, 0), (food_x, food_y, 10, 10))

    # 更新屏幕
    pygame.display.flip()

# 游戏结束
pygame.quit()

2.运行效果