koobas.hobune.stream
How to manage temporary GameObject with HideFlags.DontSave on recompile
I have a custom editor for a scene component which draws temporary preview objects at edit time. Those objects have HideFlags.DontSave set, so that they are deleted when the scene is closed. (Is this bad practice, should I be checking for ApplicationQuit and delete them myself?)
My editor code uses OnEnable to find an existing temp object or create a new one. Everything works fine until I recompile, at which point I get multiple copies of the temp objects in the scene. Any ideas how to avoid this? It's not a big problem to delete additional copies as soon as I find them, but it feels dirty. There must be a clean way, just like the SceneView camera object works. Can I maybe use callbacks to store references or delete them at recompilation?
[CustomEditor(typeof(MapView))]
public class MapEditor : Editor
{
PreviewObject previewObject;
void OnEnable()
{
var allPreviews = Resources.FindObjectsOfTypeAll<PreviewObject>();
if (allPreviews.Length > 0)
previewObject = allPreviews[0];
if (previewObject == null)
{
var go = EditorUtility.CreateGameObjectWithHideFlags("Preview Object", HideFlags.DontSave, typeof(PreviewObject));
previewObject = go.GetComponent<PreviewObject>();
}
}
}
