复杂的贪吃蛇游戏python代码

创建一个复杂的贪吃蛇游戏的Python代码需要考虑几个关键部分：游戏界面、蛇的行为、食物生成、碰撞检测等。这里是一个简化版的基本框架示例：

import pygame
import random

# 初始化pygame
pygame.init()

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

snake_speed = 5
snake_body = [(100, 100), (90, 100), (80, 100)]  # 起始蛇的身体
direction = 'right'  # 蛇的初始方向

# 食物位置
food_pos = (random.randint(0, window_size - 20), random.randint(0, window_size - 20))
food_color = (0, 255, 0)  # 食物颜色

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

    # 更新蛇的位置
    new_head = snake_body
    if direction == 'up':
        new_head = (new_head, new_head - snake_speed)
    elif direction == 'down':
        new_head = (new_head, new_head + snake_speed)
    elif direction == 'left':
        new_head = (new_head - snake_speed, new_head)
    else:  # right
        new_head = (new_head + snake_speed, new_head)

    snake_body.insert(0, new_head)

    # 检查蛇是否吃到食物
    if snake_body == food_pos:
        food_pos = (random.randint(0, window_size - 20), random.randint(0, window_size - 20))
        snake_length += 1
    else:
        snake_body.pop()

    # 碰撞检测
    if snake_body in snake_body[1:]:
        pygame.quit()
        quit()

    screen.fill((255, 255, 255))  # 清空屏幕
    for pos in snake_body:
        pygame.draw.rect(screen, (0,