# -*- coding:utf-8 -*-
# title           :太阳、地球场景模拟
# description     :太阳、地球场景模拟
# author          :Python超人
# date            :2023-02-11
# link            :https://gitcode.net/pythoncr/
# python_version  :3.8
# ==============================================================================
from bodies import Sun, Earth, Sirius
from common.consts import SECONDS_PER_WEEK, SECONDS_PER_DAY, AU
from sim_scenes.func import mayavi_run, ursina_run
from simulators.ursina.ursina_event import UrsinaEvent

if __name__ == '__main__':
    """
    太阳、地球
    """
    bodies = [
        Sun(size_scale=5e1),                      # 太阳放大 50 倍
        Earth(size_scale=2e3, distance_scale=1),  # 地球放大 2000 倍，距离保持不变
    ]

    circle = None

    def on_ready():
        global circle
        from simulators.ursina.ursina_mesh import create_circle
        from ursina import camera
        # circle = create_circle(parent=None, scale=1e2)
        # circle.set_light_off(True)


    def on_timer_changed(time_data):
        global circle
        from ursina import camera
        # circle.look_at(camera)
        # circle.rotation_y = 90

    # 运行中，每时每刻都会触发 on_timer_changed
    UrsinaEvent.on_timer_changed_subscription(on_timer_changed)
    # 运行前会触发 on_ready
    UrsinaEvent.on_ready_subscription(on_ready)

    # 使用 ursina 查看的运行效果
    # 常用快捷键： P：运行和暂停  O：重新开始  I：显示天体轨迹
    # position = 左-右+、上+下-、前+后-
    ursina_run(bodies, SECONDS_PER_WEEK, position=(0, AU, -4 * AU),
               timer_enabled=True,
               show_trail=True)