### 创建带有装饰图形的圆形时钟并实现整点报时 为了满足需求，需利用 `pygame` 库来绘制一个模拟真实世界中的挂墙式指针表盘，并通过 Python 的内置模块获取系统当前时间。每当到达整点时刻，则触发音频播放功能。 #### 导入必要的库 ```python import sys, time from datetime import datetime import pygame as pg pg.mixer.init() ``` #### 初始化 Pygame 和设置窗口属性 ```python def init_window(): screen_size = (800, 600) pg.display.set_caption("Circular Clock with Decorative Patterns") surface = pg.display.set_mode(screen_size) return surface ``` #### 加载背景图像和其他资源 加载用于装饰的图案以及要播放的音乐文件。 ```python background_image = pg.image.load('path_to_background.png').convert_alpha() # 替换为实际路径 music_file = 'alarm.mp3' # 整点提示音效文件名 ``` #### 绘制静态元素——圆面与时钟刻度线 定义函数负责画出固定不变的部分如外框、中心点及分钟/小时标记等。 ```python def draw_static_elements(surface): clock_radius = min(surface.get_width(), surface.get_height()) * .45 center_x, center_y = tuple(map(lambda x: int(x / 2), surface.get_size())) pg.draw.circle(surface, "white", (center_x, center_y), clock_radius, width=10) for i in range(60): angle = i * ((2*pg.math.pi)/60) - pg.math.pi/2 outer_point = ( round(center_x + math.cos(angle)*clock_radius), round(center_y + math.sin(angle)*clock_radius)) inner_distance = clock_radius-(7 if not(i%5==0) else 15) inner_point = ( round(center_x + math.cos(angle)*inner_distance), round(center_y + math.sin(angle)*inner_distance)) color = "#FFD700" if i % 5 == 0 else "#FFFFFF" pg.draw.line(surface, color, outer_point, inner_point, 2) ``` #### 更新动态部分——指针位置计算与重绘 根据实时更新的时间调整长短针的角度方向。 ```python def update_needles_position(current_time, surface): cx, cy = map(int,surface.get_rect().center) radius = min(surface.get_width(),surface.get_height())*.4 hour_angle = -(current_time.hour%12+(current_time.minute/60))*((2*math.pi)/12)-math.pi/2 minute_angle = -current_time.minute*((2*math.pi)/60)-math.pi/2 hdx,hdy=cx+radius//2*math.cos(hour_angle),cy+radius//2*math.sin(hour_angle) mdx,mgy=cx+radius*math.cos(minute_angle),cy+radius*math.sin(minute_angle) pg.draw.line(surface,'#CDAF95',(cx,cy),(hdx,hdy),width=int(radius//15)) # Hour hand pg.draw.line(surface,'black',(cx,cy),(mdx,mgy),width=int(radius//25)) # Minute hand ``` #### 处理整点事件——播放指定曲目 当检测到新旧两帧之间跨越了一个完整的小时周期时启动此逻辑分支。 ```python last_hour_played = None def handle_whole_hour_event(current_time): global last_hour_played current_hour = current_time.strftime("%H") if current_hour != last_hour_played and current_time.minute == 0: try: pg.mixer.music.stop() pg.mixer.music.load(music_file) pg.mixer.music.play(loops=0) while pg.mixer.music.get_busy(): pg.time.Clock().tick(10) last_hour_played = current_hour except Exception as e: print(f"Error playing music {e}") ``` #### 主循环体结构设计 整合上述各组件形成完整的游戏主循环流程控制。 ```python if __name__ == '__main__': window_surface = init_window() running_flag = True fps_clock = pg.time.Clock() while running_flag: events_list = pg.event.get() for event_item in events_list: if event_item.type == pg.QUIT or \ (event_item.type == pg.KEYDOWN and event_item.key == pg.K_ESCAPE): running_flag=False now_moment = datetime.now() window_surface.blit(background_image,(0,0)) draw_static_elements(window_surface) update_needles_position(now_moment,window_surface) handle_whole_hour_event(now_moment) pg.display.flip() fps_clock.tick(30) pg.quit() sys.exit() ```