From 6c8b3e0cd220be83d20448a2155b20546c03d71e Mon Sep 17 00:00:00 2001
From: march3 <gang.wei@qq.com>
Date: Tue, 5 Mar 2024 10:56:41 +0800
Subject: [PATCH] =?UTF-8?q?Python=E8=B6=85=E4=BA=BA-=E5=AE=87=E5=AE=99?=
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---
 sim_scenes/featured/solar_system_explorer.py | 58 ++++++++++++++++----
 1 file changed, 46 insertions(+), 12 deletions(-)

diff --git a/sim_scenes/featured/solar_system_explorer.py b/sim_scenes/featured/solar_system_explorer.py
index 969879e..6bb3f89 100644
--- a/sim_scenes/featured/solar_system_explorer.py
+++ b/sim_scenes/featured/solar_system_explorer.py
@@ -39,9 +39,11 @@ class SolarSystemExplorer(UniverseSimScenes):
     def build_solar_system(self):
         # region 构建太阳系
         show_trail = False
-        self.SIZE_FACTOR = 0.01
-        self.init_pos = [2 * AU, 2 * AU, -10 * AU]
-        self.sun = Sun(size_scale=20e2 * self.SIZE_FACTOR, show_trail=show_trail,
+        self.SIZE_FACTOR = 0.1 # 0.01
+        # self.init_pos = [2 * AU, 2 * AU, 5 * AU]
+        # self.init_pos = [1.8 * AU, 1.8 * AU, 4.5 * AU]
+        self.init_pos = [1.8 * AU, 1.8 * AU, 4.5 * AU]
+        self.sun = Sun(size_scale=2e2 * self.SIZE_FACTOR, show_trail=show_trail,
                        # color=(255, 250, 245),
                        # texture="",
                        texture="sun_light.jpg"
@@ -62,20 +64,36 @@ class SolarSystemExplorer(UniverseSimScenes):
                                             # init_position=[0, 0, 0],
                                             init_position=self.init_pos,
                                             init_velocity=[0, 0, 0],
+                                            texture='transparent.png',
                                             size_scale=1e3 * self.SIZE_FACTOR).set_ignore_gravity(True)
 
+        # self.bodies = [
+        #     self.sun,  # 太阳
+        #     self.mercury,  # 水星
+        #     self.venus,  # 金星
+        #     self.earth,  # 地球
+        #     self.mars,  # 火星
+        #     self.jupiter,  # 木星
+        #     self.saturn,  # 土星
+        #     self.uranus,  # 天王星
+        #     self.neptune,  # 海王星
+        #     self.pluto,  # 冥王星
+        #     self.camera_target
+        # ]
+
         self.bodies = [
-            self.sun,  # 太阳
+            self.camera_target,
+            self.saturn,  # 土星
+            self.mars,  # 火星
+            self.earth,  # 地球
             self.mercury,  # 水星
+            self.sun,  # 太阳
             self.venus,  # 金星
-            self.earth,  # 地球
-            self.mars,  # 火星
             self.jupiter,  # 木星
-            self.saturn,  # 土星
             self.uranus,  # 天王星
             self.neptune,  # 海王星
-            self.pluto,  # 冥王星
-            self.camera_target
+            # self.pluto,  # 冥王星
+
         ]
 
         self.sun.target_offset = [1, 1, 1.1]
@@ -100,7 +118,18 @@ class SolarSystemExplorer(UniverseSimScenes):
         self.neptune.dd_factor = 1.5
         self.pluto.dd_factor = 1.5
 
-        init_bodies_pos_vels(self.bodies, init_pos_vels_fun=self.get_init_pos_vels)
+        self.init_pos_vels()
+        # init_bodies_pos_vels(self.bodies, init_pos_vels_fun=self.get_init_pos_vels)
+
+    def init_pos_vels(self):
+        from astropy.time import Time
+        from datetime import datetime
+        start_time = Time(datetime.strptime('2149-02-01 12:00:00+0800', '%Y-%m-%d %H:%M:%S%z'),
+                               format='datetime')
+        # set_solar_system_celestial_position(self.bodies, start_time, True)
+
+        init_bodies_reality_pos_vels(self.bodies, start_time)
+
 
     def get_init_pos_vels(self):
         init_pos_vels = {}
@@ -234,7 +263,7 @@ class SolarSystemExplorer(UniverseSimScenes):
                             value_conv=self.s_f, smooth=1)
 
     def get_target(self):
-        for body in self.bodies:
+        for body in self.bodies[1:]:
             if hasattr(body, "is_arrived"):
                 continue
             return body
@@ -258,11 +287,15 @@ class SolarSystemExplorer(UniverseSimScenes):
         camera.speed = 4e2
         self.camera_target.planet.update = lambda: None
         # 显示网格以及坐标线
-        # self.show_grid_axises()
+        # self.show_grid_axises(scale_factor=50)
+        target = self.get_target()
+        camera_look_at(self.saturn, rotation_z=0)
 
     def go_target(self):
         from ursina import distance
         target = self.get_target()
+        if target is None:
+            return
 
         target_scale = target.planet.scale_x
         target_offset = target.target_offset
@@ -302,6 +335,7 @@ class SolarSystemExplorer(UniverseSimScenes):
         @param time_data:
         @return:
         """
+        # return
         self.go_target()
         # self.camera_move(time_data)
         # self.current_stage()
-- 
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