python实现贪吃蛇代码

以下是一个简单的Python实现贪吃蛇游戏的代码，其中使用了Pygame库来实现游戏界面的绘制和事件的处理：

import pygame
import random

# 初始化Pygame
pygame.init()

# 定义游戏界面大小、背景颜色和标题
screen_width = 640
screen_height = 480
bg_color = (255, 255, 255)
caption = '贪吃蛇'
font_size = 36

# 定义游戏界面和字体
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption(caption)
font = pygame.font.SysFont(None, font_size)

# 定义贪吃蛇的初始位置、大小和移动速度
snake_size = 20
snake_x = screen_width // 2
snake_y = screen_height // 2
snake_speed = 20
snake_body = [[snake_x, snake_y]]

# 定义食物的初始位置和大小
food_size = 20
food_x = random.randint(0, screen_width // food_size - 1) * food_size
food_y = random.randint(0, screen_height // food_size - 1) * food_size

# 定义游戏循环标志和时钟
game_over = False
clock = pygame.time.Clock()

# 定义游戏循环
while not game_over:
    # 处理游戏事件
    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_speed = [-snake_size, 0]
            elif event.key == pygame.K_DOWN:
                snake_speed = [snake_size, 0]
            elif event.key == pygame.K_LEFT:
                snake_speed = [0, -snake_size]
            elif event.key == pygame.K_RIGHT:
                snake_speed = [0, snake_size]

    # 移动贪吃蛇
    snake_x += snake_speed[0]
    snake_y += snake_speed[1]
    snake_body.insert(0, [snake_x, snake_y])
    snake_body.pop()

    # 判断是否吃到食物
    if snake_x == food_x and snake_y == food_y:
        food_x = random.randint(0, screen_width // food_size - 1) * food_size
        food_y = random.randint(0, screen_height // food_size - 1) * food_size
        snake_body.append([snake_x, snake_y])

    # 判断是否撞墙或撞到自己
    if snake_x < 0 or snake_x >= screen_width or snake_y < 0 or snake_y >= screen_height or [snake_x, snake_y] in snake_body[1:]:
        game_over = True

    # 绘制游戏界面
    screen.fill(bg_color)
    pygame.draw.rect(screen, (255, 0, 0), (food_x, food_y, food_size, food_size))
    for pos in snake_body:
        pygame.draw.rect(screen, (0, 255, 0), (pos[0], pos[1], snake_size, snake_size))
    score_text = font.render('Score: {}'.format(len(snake_body) - 1), True, (0, 0, 0))
    screen.blit(score_text, (10, 10))
    pygame.display.update()

    # 控制游戏帧率
    clock.tick(10)

# 退出Pygame
pygame.quit()