Python贪吃蛇小游戏代码

Python编写贪吃蛇小游戏的代码通常会包含基本的游戏结构、角色移动、食物生成以及碰撞检测等功能。这是一个简化的例子，不涉及复杂的图形库，仅用内置模块`pygame`和一些基本控制：

import pygame
import random

# 初始化Pygame
pygame.init()

# 设置窗口大小
screen_width = 800
screen_height = 600
win = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("贪吃蛇")

snake_speed = 15

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

# 初始化蛇的位置和方向
snake_pos = [(screen_width // 2, screen_height // 2), (screen_width // 2 - 10, screen_height // 2)]
snake_dir = [0, 1]  # 向上

food_pos = None
food_spawned = False

running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP and snake_dir != [0, -1]:
                snake_dir = [-1, 0]
            elif event.key == pygame.K_DOWN and snake_dir != [0, 1]:
                snake_dir = [1, 0]
            elif event.key == pygame.K_LEFT and snake_dir != [1, 0]:
                snake_dir = [0, -1]
            elif event.key == pygame.K_RIGHT and snake_dir != [-1, 0]:
                snake_dir = [0, 1]

    # 移动蛇
    head = snake_pos
    head += snake_dir * snake_speed
    head += snake_dir * snake_speed
    snake_pos.insert(0, head)

    # 检查是否吃到食物
    if not food_spawned:
        food_pos = [random.randint(0, screen_width - 10), random.randint(0, screen_height - 10)]
        food_spawned = True
    else:
        if head == food_pos:
            food_pos = [random.randint(0, screen_width - 10), random.randint(0, screen_height - 10)]
            snake_pos.append(snake_pos[-1])  # 增加新节点
            del snake_pos[-2]  # 删除尾巴

    # 碰撞检测
    if head in snake_pos[:-1] or head < 0 or head >= screen_width or head < 0 or head >= screen_height:
        running = False

    # 绘制游戏元素
    win.fill(black)
    for pos in snake_pos:
        pygame.draw.rect(win, white, [pos, pos, 10, 10])
    if food_spawned:
        pygame.draw.rect(win, red, [food_pos, food_pos, 10, 10])

    pygame.display.update()

# 清理并退出
pygame.quit()

相关问题--
1. 贪吃蛇游戏中如何处理玩家的输入？
2. 如何在游戏中实现蛇的移动和边界检测？
3. 如何创建和管理游戏中的食物？