太阳系三体模拟器

simulators/ursina/ursina_ui.py

@@ -161,10 +161,14 @@ class UrsinaUI:
                 def callback_action(b=body):
                     self.bodies_button_list_click(b)
 
+                if body.appeared:
                     distance_to_entity = distance(body.planet, camera)
                     d = distance_to_entity / UrsinaConfig.SCALE_FACTOR / AU
                     name = f"{body.name}\t距离：{d:.4f}天文单位"
                     button_dict[name] = callback_action
+                else:
+                    name = f"{body.name}\t距离太远，找不到了"
+                    button_dict[name] = lambda: self.bodies_button_list_click(None)
 
             if hasattr(self, "bodies_button_list"):
                 destroy(self.bodies_button_list)

simulators/ursina_simulator.py

@@ -62,7 +62,7 @@ class UrsinaSimulator(Simulator):
     def on_searching_bodies(self, **kwargs):
         views = []
         for view in self.body_views:
-            if view.appeared:
+            # if view.appeared:
             views.append(view)
         return views