Python做一个贪吃蛇的游戏

好的，以下是一个简单的 Python 贪吃蛇游戏代码，使用 Pygame 模块：

import pygame
import random

# 初始化 Pygame
pygame.init()

# 定义游戏窗口大小
WINDOW_WIDTH = 600
WINDOW_HEIGHT = 600

# 定义贪吃蛇和食物方块大小
BLOCK_SIZE = 20

# 定义颜色常量
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)

# 创建游戏窗口
game_window = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
pygame.display.set_caption('Snake Game')

# 定义游戏时钟
clock = pygame.time.Clock()

# 定义字体
font = pygame.font.SysFont(None, 30)


def draw_snake(snake_body):
    for block in snake_body:
        pygame.draw.rect(game_window, GREEN, [block[0], block[1], BLOCK_SIZE, BLOCK_SIZE])


def draw_food(food_position):
    pygame.draw.rect(game_window, RED, [food_position[0], food_position[1], BLOCK_SIZE, BLOCK_SIZE])


def game_loop():
    # 定义贪吃蛇初始位置和方向
    snake_x = WINDOW_WIDTH / 2
    snake_y = WINDOW_HEIGHT / 2
    snake_x_change = 0
    snake_y_change = 0
    snake_body = []
    snake_length = 1

    # 定义食物初始位置
    food_x = round(random.randrange(0, WINDOW_WIDTH - BLOCK_SIZE) / BLOCK_SIZE) * BLOCK_SIZE
    food_y = round(random.randrange(0, WINDOW_HEIGHT - BLOCK_SIZE) / BLOCK_SIZE) * BLOCK_SIZE
    food_position = [food_x, food_y]

    # 游戏结束标志
    game_over = False

    while not game_over:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    snake_x_change = -BLOCK_SIZE
                    snake_y_change = 0
                elif event.key == pygame.K_RIGHT:
                    snake_x_change = BLOCK_SIZE
                    snake_y_change = 0
                elif event.key == pygame.K_UP:
                    snake_y_change = -BLOCK_SIZE
                    snake_x_change = 0
                elif event.key == pygame.K_DOWN:
                    snake_y_change = BLOCK_SIZE
                    snake_x_change = 0

        # 更新贪吃蛇位置
        snake_x += snake_x_change
        snake_y += snake_y_change

        # 判断贪吃蛇是否吃到食物
        if snake_x == food_x and snake_y == food_y:
            food_x = round(random.randrange(0, WINDOW_WIDTH - BLOCK_SIZE) / BLOCK_SIZE) * BLOCK_SIZE
            food_y = round(random.randrange(0, WINDOW_HEIGHT - BLOCK_SIZE) / BLOCK_SIZE) * BLOCK_SIZE
            food_position = [food_x, food_y]
            snake_length += 1

        # 更新贪吃蛇身体
        snake_head = [snake_x, snake_y]
        snake_body.append(snake_head)
        if len(snake_body) > snake_length:
            del snake_body[0]

        # 判断贪吃蛇是否撞墙或撞到自己
        if snake_x < 0 or snake_x >= WINDOW_WIDTH or snake_y < 0 or snake_y >= WINDOW_HEIGHT:
            game_over = True
        for block in snake_body[:-1]:
            if block == snake_head:
                game_over = True

        # 绘制游戏窗口
        game_window.fill(WHITE)
        draw_snake(snake_body)
        draw_food(food_position)
        score_text = font.render("Score: {}".format(snake_length - 1), True, BLACK)
        game_window.blit(score_text, [0, 0])
        pygame.display.update()

        # 控制游戏帧率
        clock.tick(10)

    # 退出 Pygame
    pygame.quit()
    quit()


game_loop()

你可以将以上代码保存为 `snake.py` 文件并运行，即可开始游戏。