Bug Resources.FindObjectsOfTypeAll<T> Does not work for imported files from packages.

Code (CSharp):

1.  public class SettingsFile: ScriptableObject
2.     {
3.         private static SettingsFile _instance;
4.  
5.         public static SettingsFile Instance
6.         {
7.             get
8.             {
9.                 if (_instance != null) return _instance;
10.              
11.                 _instance = Resources.FindObjectsOfTypeAll<SettingsFile>().FirstOrDefault();
12.            
13.                 if (_instance != null) return _instance;
14.             }
15.         }
16.  

If the file is imported from a unity package. This always returns null unless I move the imported file out of the folder to any place in the project. After moving the file anywhere, it finds the instance. Does anyone know of a way around this problem?

 

- Do not use static accessor on a ScriptableObject. Drag the object into a slot where you want to use it.
- if you really need to then here is how you can do it safely (I don't recommend it):

- if you want to check in Editor that one of these are already exists:
https://docs.unity3d.com/ScriptReference/AssetDatabase.FindAssets.html with the t: search you can check.

But if you want to boot up your static Instance variable, then this way:

Code (CSharp):

1. #if UNITY_EDITOR
2.         private void OnEnable()
3.         {
4.             EditorApplication.playModeStateChanged += OnPlayStateChange;
5.         }
6.  
7.         private void OnDisable()
8.         {
9.             EditorApplication.playModeStateChanged -= OnPlayStateChange;
10.         }
11.  
12.         private void OnPlayStateChange(PlayModeStateChange state)
13.         {
14.             if(state == PlayModeStateChange.EnteredPlayMode)
15.             {
16.                 OnBegin();
17.             }
18.         }
19. #else
20.         private void OnEnable()
21.         {
22.             OnBegin();
23.         }
24. #endif
25.         private void OnBegin()
26.         {
27.             Instance = this;
28.         }
29.  

This is working both in the Editor and in the build in theory, unless I didn't mistype something, because it was from the top of my head.

 

Have you seen the Unity Unite talk?
"Overthrowing the MonoBehaviour tyranny in a glorious ScriptableObject revolution".

This is almost exactly the code unity posted.
Its also how steamVR does it but they load it from the Resources folder.

This is a settings file for In editor use only, so I'll check out the AssetDatabase.findassets

 

I didn't realize Resources was a special folder that could be used in any folder like Editor.
I just did what steamVR did, and threw it into a Resources folder, that way I can keep my asset entirely contained in one folder.

 

If it's editor only, that makes it even easier. Just use the OnEnable. It runs when you create/load the ScriptableObject. It doesn't run when you go in play mode.
If this is editor only, it is probably a good idea to protect the entire file with #if UNITY_EDITOR in order to not to build into the runtime.

I saw every ScriptableObject thing, I was play with the a lot. That's why I came to the conclusion to not to allow static accessor to any of them.