# -*- coding:utf-8 -*- # title :在太阳系中以光速运行 # description :在太阳系中以光速运行 # author :Python超人 # date :2023-04-05 # link :https://gitcode.net/pythoncr/ # python_version :3.8 # ============================================================================== from bodies import Sun, Asteroids, Body from common.consts import AU, LIGHT_SPEED, SECONDS_PER_MINUTE, SECONDS_PER_HOUR from sim_scenes.func import create_text_panel from simulators.ursina.entities.body_timer import TimeData from simulators.ursina.ursina_config import UrsinaConfig from simulators.ursina.ursina_event import UrsinaEvent from ursina import camera import datetime class SpeedOfLightInit: def __init__(self, camera_follow_light): """ @param camera_follow_light: 三种不同的摄像机视角 None # 摄像机固定，不会跟随光 ForwardView # 摄像机跟随光，方向是向前看 SideView # 摄像机跟随光，方向是侧面看 """ # 存放记录光体已到达天体列表 self.arrived_bodies = [] # 显示消息面板（记录光体已到达天体的时间） self.text_panel = None # 显示消息面板的信息（记录光体已到达天体的时间） self.arrived_info = "" self.__camera_follow_light = camera_follow_light self.__light_body = None self.__bodies = None self.view_closely = False if self.__camera_follow_light in ["SideView", "SideViewActualSize"]: # 摄像机位置 = 前-后+、上+下-、左-右+、 self.camera_position = (AU, 0, 0) self.show_trail = True self.light_size_scale = 1e3 self.light_init_position = [AU / 3, 0, 0] elif self.__camera_follow_light == "ForwardView": # 摄像机位置 = 左-右+、上+下-、前+后- self.camera_position = (0, AU / 10, -AU) self.show_trail = True self.light_size_scale = 1e2 self.light_init_position = [AU / 12, 0, 0] else: # 摄像机位置 = 左-右+、上+下-、前+后- self.camera_position = (0, AU, -6 * AU) self.show_trail = True self.light_size_scale = 2e3 self.light_init_position = [AU / 3, 0, 0] @property def light_body(self): return self.__light_body @light_body.setter def light_body(self, value): self.__light_body = value @property def bodies(self): return self.__bodies @bodies.setter def bodies(self, value): self.__bodies = value if self.__camera_follow_light == "SideViewActualSize": # TODO: 将天体的大小不进行缩放 for body in self.__bodies: if body is self.light_body: continue body.size_scale = 1 self.camera_position = [-self.light_init_position[0] / 1.35, 0, 0] self.view_closely = True def on_reset(self): """ 点击了重置按钮触发 @return: """ self.arrived_bodies.clear() # 重置存放记录光体已到达天体列表 self.arrived_info = "距离[太阳]：${distance}\n\n" if self.text_panel is not None: self.text_panel.text = self.arrived_info.replace("${distance}", "0 AU") def event_subscription(self): """ 订阅事件 @return: """ if self.light_body is None: raise Exception("请指定 SpeedOfLightInit.light_body") if self.bodies is None: raise Exception("请指定 SpeedOfLightInit.bodies") # 订阅重新开始事件 UrsinaEvent.on_reset_subscription(self.on_reset) UrsinaEvent.on_ready_subscription(self.on_ready) # 订阅计时器事件（记录已到达天体列表） UrsinaEvent.on_timer_changed_subscription(self.on_timer_changed) def light_body_input(self, key): # TODO: 在这里控制光体的运动 # if self.light_body.planet.hovered: if key == "w": # 上 pass elif key == "s": # 上 pass elif key == "a": # 左 pass elif key == "d": # 右 pass # self.light_body.velocity[1] = 1 # self.light_body.planet.update() def on_ready(self): """ 模拟器开始运行前触发 @return: """ self.text_panel = create_text_panel() self.text_panel.text = self.arrived_info.replace("${distance}", "0 AU") if self.__camera_follow_light in ["SideView", "SideViewActualSize"]: camera.parent = self.light_body.planet camera.rotation_y = -85 elif self.__camera_follow_light == "ForwardView": # self.light_body.planet.enabled = False camera.parent = self.light_body.planet self.light_body.planet.input = self.light_body_input camera.rotation_y = -15 def auto_run_speed(self): # if self.__camera_follow_light != "SideViewActualSize": # return run_speed_maps = [ {"au": 0.008, "secs": 1}, {"au": 0.36, "secs": SECONDS_PER_MINUTE * 2}, {"au": 0.376, "secs": SECONDS_PER_MINUTE}, {"au": 0.386, "secs": 1}, # [00:03:12] 到达 [水星] 0.384 AU {"au": 0.715, "secs": SECONDS_PER_MINUTE}, {"au": 0.723, "secs": 1}, # [00:06:00] 到达 [金星] 0.721 AU {"au": 0.996, "secs": SECONDS_PER_MINUTE}, {"au": 1.002, "secs": 1}, # [00:08:19] 到达 [地球] 1.0 AU {"au": 1.50, "secs": SECONDS_PER_MINUTE * 2}, {"au": 1.516, "secs": SECONDS_PER_MINUTE}, {"au": 1.522, "secs": 1}, # [00:12:39] 到达 [火星] 1.52 AU {"au": 5.1, "secs": SECONDS_PER_HOUR}, {"au": 5.182, "secs": SECONDS_PER_MINUTE * 2}, {"au": 5.192, "secs": 1}, # [00:43:10] 到达 [木星] 5.19 AU {"au": 9.44, "secs": SECONDS_PER_HOUR}, {"au": 9.492, "secs": SECONDS_PER_MINUTE}, {"au": 9.502, "secs": 1}, # [01:19:01] 到达 [土星] 9.5 AU {"au": 19.15, "secs": SECONDS_PER_HOUR}, {"au": 19.192, "secs": SECONDS_PER_MINUTE}, {"au": 19.202, "secs": 1}, # [02:39:41] 到达 [天王星] 19.2 AU {"au": 30.67, "secs": SECONDS_PER_HOUR}, {"au": 30.692, "secs": SECONDS_PER_MINUTE}, {"au": 30.702, "secs": 1}, # [04:15:19] 到达 [海王星] 30.7 AU {"au": 39.52, "secs": SECONDS_PER_HOUR * 1.2}, {"au": 39.53, "secs": SECONDS_PER_MINUTE}, {"au": 1000, "secs": 1} # [05:28:55] 到达 [冥王星] 39.55 AU ] light_distance = self.light_body.position[2] for i, m in enumerate(run_speed_maps): if i == 0: au_min = 0 else: au_min = run_speed_maps[i - 1]["au"] au_max = m["au"] if au_max * AU > light_distance >= au_min * AU: UrsinaConfig.seconds_per = m["secs"] def on_timer_changed(self, time_data: TimeData): """ 计时器触发 @param time_data: 计时器时间数据 @return: """ self.auto_run_speed() for body in self.bodies: if body is self.light_body or isinstance(body, Sun) \ or body in self.arrived_bodies or isinstance(body, Asteroids): # 对于光速天体、太阳、小行星群、“已到达天体列表”中的天体无需计算 continue # 计算判断，如果光速天体距离到达了某个天体，就记录到“已到达天体列表”中 if self.light_body.position[2] >= body.position[2]: self.arrived_bodies.append(body) if self.text_panel is not None: self.arrived_info += f"[{time_data.time_text}]\t到达\t[{body.name}]\n\n" distance = round(self.light_body.position[2] / AU, 2) self.text_panel.text = self.arrived_info.replace("${distance}", f"{distance} AU") print(f"[{time_data.time_text}] 到达 [{body.name}] {round(self.light_body.position[2] / AU, 4)} AU") return if not hasattr(self, "last_time"): self.last_time = datetime.datetime.now() else: if datetime.datetime.now() - datetime.timedelta(milliseconds=1000) > self.last_time: distance = round(self.light_body.position[2] / AU, 2) self.text_panel.text = self.arrived_info.replace("${distance}", f"{distance} AU") self.last_time = datetime.datetime.now()