把上述代码中的游戏角色替换为葫芦娃

要把上述代码中的游戏角色替换为葫芦娃，你需要准备好葫芦娃的图片，并将其加载到游戏中。

以下是修改后的代码，将游戏角色替换为葫芦娃：

import pygame
import random

# 初始化游戏
pygame.init()

# 游戏窗口的大小
window_width = 400
window_height = 600

# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)
green = (0, 255, 0)
blue = (0, 0, 255)

# 创建游戏窗口
game_display = pygame.display.set_mode((window_width, window_height))
pygame.display.set_caption('My Game')

# 时钟控制
clock = pygame.time.Clock()

# 加载图片
player_image = pygame.image.load('huluwa.png')
player_width = 50
player_height = 50

# 障碍物列表
obstacles = []

# 添加障碍物
def add_obstacle():
    obstacle_width = 60
    obstacle_height = 40
    obstacle_x = random.randint(0, window_width - obstacle_width)
    obstacle_y = -obstacle_height
    obstacle_speed = random.randint(1, 5)
    obstacles.append({'x': obstacle_x, 'y': obstacle_y, 'speed': obstacle_speed, 'width': obstacle_width, 'height': obstacle_height})

# 碰撞检测
def is_collision(player_x, player_y, player_width, player_height, obstacle_x, obstacle_y, obstacle_width, obstacle_height):
    if player_x + player_width > obstacle_x and player_x < obstacle_x + obstacle_width:
        if player_y + player_height > obstacle_y and player_y < obstacle_y + obstacle_height:
            return True
    return False

# 游戏循环
def game_loop():
    player_x = window_width / 2 - player_width / 2
    player_y = window_height - player_height
    player_speed = 5

    score = 0

    game_exit = False
    while not game_exit:
        # 事件处理
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_exit = True

        # 移动玩家
        keys = pygame.key.get_pressed()
        if keys[pygame.K_LEFT] and player_x > 0:
            player_x -= player_speed
        if keys[pygame.K_RIGHT] and player_x < window_width - player_width:
            player_x += player_speed

        # 添加障碍物
        if random.randint(0, 100) < 5:
            add_obstacle()

        # 移动障碍物
        for obstacle in obstacles:
            obstacle['y'] += obstacle['speed']

            # 检测碰撞
            if is_collision(player_x, player_y, player_width, player_height, obstacle['x'], obstacle['y'], obstacle['width'], obstacle['height']):
                game_exit = True

            # 删除越界的障碍物
            if obstacle['y'] > window_height:
                obstacles.remove(obstacle)
                score += 1

        # 绘制游戏界面
        game_display.fill(white)

        # 绘制玩家
        game_display.blit(player_image, (player_x, player_y))

        # 绘制障碍物
        for obstacle in obstacles:
            pygame.draw.rect(game_display, red, (obstacle['x'], obstacle['y'], obstacle['width'], obstacle['height']))

        # 显示分数
        font = pygame.font.SysFont(None, 25)
        text = font.render('Score: ' + str(score), True, black)
        game_display.blit(text, (10, 10))

        pygame.display.update()

        # 控制帧率
        clock.tick(60)

    pygame.quit()
    quit()

game_loop()

在这个修改后的代码中，我们将玩家的图片替换为了葫芦娃，并将其命名为'huluwa.png'。这个图片应该放在与代码文件相同的目录下，以便程序正确地加载它。