如何在游戏的GUI中添加时间(滴答)

import pygame
import time

# 初始化Pygame
pygame.init()

# 创建游戏窗口
window_width = 800
window_height = 600
window = pygame.display.set_mode((window_width, window_height))
pygame.display.set_caption("游戏时间示例")

# 创建字体对象
font = pygame.font.Font(None, 36)

# 创建计时器变量
start_time = time.time()

# 游戏主循环
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 更新计时器变量
    current_time = time.time() - start_time

    # 转换时间格式为小时、分钟、秒
    hours = int(current_time / 3600)
    minutes = int((current_time % 3600) / 60)
    seconds = int(current_time % 60)

    # 格式化时间字符串
    time_str = "{:02d}:{:02d}:{:02d}".format(hours, minutes, seconds)

    # 创建文本对象
    text = font.render(time_str, True, (255, 255, 255))

    # 渲染文本到窗口
    window.fill((0, 0, 0))
    window.blit(text, (window_width // 2 - text.get_width() // 2, window_height // 2 - text.get_height() // 2))
    pygame.display.flip()

# 退出游戏
pygame.quit()