用python编写一个贪吃蛇游戏

当然可以！下面是一个简单的贪吃蛇游戏的Python代码：

import pygame
import random

# 游戏窗口的宽度和高度
WIDTH = 800
HEIGHT = 600

# 贪吃蛇每一节身体的大小
BODY_SIZE = 20

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

# 初始化pygame
pygame.init()

# 创建游戏窗口
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("贪吃蛇")

clock = pygame.time.Clock()

font_style = pygame.font.SysFont(None, 50)
score_font = pygame.font.SysFont(None, 35)


def show_score(score):
    score_text = score_font.render("分数: " + str(score), True, WHITE)
    screen.blit(score_text, [10, 10])


def draw_snake(snake_body):
    for body_part in snake_body:
        pygame.draw.rect(screen, GREEN, [body_part[0], body_part[1], BODY_SIZE, BODY_SIZE])


def game_loop():
    game_over = False
    game_quit = False

    # 贪吃蛇初始位置
    x = WIDTH / 2
    y = HEIGHT / 2

    # 贪吃蛇移动的速度
    x_change = 0
    y_change = 0

    # 贪吃蛇身体列表，其中每个元素都是一个包含x和y坐标的元组
    snake_body = []
    snake_length = 1

    # 食物的初始位置
    food_x = round(random.randrange(0, WIDTH - BODY_SIZE) / 20.0) * 20.0
    food_y = round(random.randrange(0, HEIGHT - BODY_SIZE) / 20.0) * 20.0

    while not game_quit:
        while game_over:
            screen.fill(BLACK)
            game_over_text = font_style.render("游戏结束！", True, RED)
            screen.blit(game_over_text, [WIDTH / 2 - 100, HEIGHT / 2 - 50])
            show_score(snake_length - 1)
            pygame.display.flip()

            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    game_quit = True
                    game_over = False
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_quit = True
                        game_over = False
                    if event.key == pygame.K_r:
                        game_loop()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_quit = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x_change = -BODY_SIZE
                    y_change = 0
                elif event.key == pygame.K_RIGHT:
                    x_change = BODY_SIZE
                    y_change = 0
                elif event.key == pygame.K_UP:
                    y_change = -BODY_SIZE
                    x_change = 0
                elif event.key == pygame.K_DOWN:
                    y_change = BODY_SIZE
                    x_change = 0

        # 更新贪吃蛇的位置
        x += x_change
        y += y_change

        # 判断是否吃到食物
        if x == food_x and y == food_y:
            food_x = round(random.randrange(0, WIDTH - BODY_SIZE) / 20.0) * 20.0
            food_y = round(random.randrange(0, HEIGHT - BODY_SIZE) / 20.0) * 20.0
            snake_length += 1

        # 判断是否碰到边界或自身
        if x >= WIDTH or x < 0 or y >= HEIGHT or y < 0:
            game_over = True
        head = []
        head.append(x)
        head.append(y)
        snake_body.append(head)
        if len(snake_body) > snake_length:
            del snake_body[0]

        for body_part in snake_body[:-1]:
            if body_part == head:
                game_over = True

        screen.fill(BLACK)
        pygame.draw.rect(screen, RED, [food_x, food_y, BODY_SIZE, BODY_SIZE])
        draw_snake(snake_body)
        show_score(snake_length - 1)

        pygame.display.flip()
        clock.tick(15)

    pygame.quit()


game_loop()

这个代码使用了pygame库来创建游戏窗口、处理键盘事件和绘制图形。贪吃蛇的身体由一个列表来表示，每一节身体都是一个包含x和y坐标的元组。游戏循环中，根据键盘事件来更新贪吃蛇的位置，判断是否吃到食物，以及判断是否碰到边界或自身。游戏窗口每帧都会被刷新，以显示最新的贪吃蛇位置和分数。

希望这个代码对你有帮助！如果有任何问题，请随时提问。