帮我写一个能玩的贪吃蛇的代码

当然可以！编写一个简单的贪吃蛇游戏的基本步骤包括创建游戏窗口、定义游戏角色（蛇）、食物生成、碰撞检测以及得分管理等。这里我会给你提供一个基础版本的Python游戏框架，使用`pygame`库来创建游戏。首先确保已经安装了`pygame`，如果没有，请运行`pip install pygame`。

import pygame
import random

# 初始化Pygame
pygame.init()

# 设置窗口大小
window_width = 600
window_height = 400
screen = pygame.display.set_mode((window_width, window_height))
pygame.display.set_caption("贪吃蛇")

# 定义颜色
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)

# 蛇的初始设置
snake_speed = 15
snake_pos = [(window_width // 2, window_height // 2)]
snake_body = [[window_width // 2, window_height // 2]]
direction = "right"

# 食物的初始位置
food_pos = [random.randint(1, window_width - 2), random.randint(1, window_height - 2)]

clock = pygame.time.Clock()
score = 0

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            quit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP and direction != "down":
                direction = "up"
            elif event.key == pygame.K_DOWN and direction != "up":
                direction = "down"
            elif event.key == pygame.K_LEFT and direction != "right":
                direction = "left"
            elif event.key == pygame.K_RIGHT and direction != "left":
                direction = "right"

    # 移动蛇并检测边界和碰撞
    new_head = snake_pos[-1]
    if direction == "up":
        new_head = (new_head[0], new_head[1] - snake_speed)
    elif direction == "down":
        new_head = (new_head[0], new_head[1] + snake_speed)
    elif direction == "left":
        new_head = (new_head[0] - snake_speed, new_head[1])
    else:
        new_head = (new_head[0] + snake_speed, new_head[1])

    snake_pos.insert(0, new_head)

    # 检测蛇是否吃到食物
    if snake_pos[0] == food_pos:
        score += 10
        # 生成新的食物位置
        food_pos = [random.randint(1, window_width - 2), random.randint(1, window_height - 2)]
        while food_pos in snake_body:
            food_pos = [random.randint(1, window_width - 2), random.randint(1, window_height - 2)]
    else:
        tail = snake_body.pop()
        screen.fill(BLACK)
        # 绘制蛇的身体和头部
        for pos in snake_body:
            pygame.draw.rect(screen, WHITE, pygame.Rect(pos[0], pos[1], 10, 10))
        pygame.draw.rect(screen, WHITE, pygame.Rect(new_head[0], new_head[1], 10, 10))

        # 绘制食物
        pygame.draw.rect(screen, WHITE, pygame.Rect(food_pos[0], food_pos[1], 10, 10))

    # 更新屏幕
    screen.blit(pygame.font.SysFont(None, 30).render(f"Score: {score}", 1, WHITE), (10, 10))
    pygame.display.flip()

    clock.tick(snake_speed)

这个代码实现了基本的贪吃蛇游戏，但没有处理蛇头碰撞身体的情况。要完成一个完整的游戏，你需要添加这些逻辑，例如当蛇头碰到墙壁或自己的身体时，游戏结束。