DontDestroyOnLoad but script being excuted multiple times

Questions & Answers
1

Lets say I have a scene called MainMenuScene in which I have a GameObject, say, Datasource_GO.
On this I’ve assigned a script, say, Datasource_CS.cs whose contents can be simply:

void Awake() {
    DontDestroyOnLoad(gameObject);
    Debug.Log("Datasource_CS--Awake");
}
	
void Start () {
    Debug.Log("Datasource_CS--Start");
}

From MainMenuScene I can go to, say, GameScene and then back to MainMenuScene.

The problem here is that with DontDestroyOnLoad I expected Datasource_GO to run the Awake method just once but everytime I load MainMenuScene, it executes Awake.

I believe it’s the intended behavior so for now, I have put Datasource_GO in a dummy scene called _DummyScene that loads MainMenuScene with no route back to _DummyScene just to prevent Datasource_GO from executing multiple times.

I would like to know how you guys have/would handle this scenario or have any insight/alternatives to this.

2

Hi staticVoidMan,

If I understood correctly, your problem is that “Datasource_GO” gameObject is multiplying every time you switch scenes as script has Dont Destroy onLoad method…
For this you can create a prefab of “Datasource_GO” with the script already assigned and instantiate in the first scene i.e your Menu with a check to see if it is already in scene or not.

  if(!GameObject.Find("Datasource_GO"))
    {
    Instantiate (Datasource_Go);//Write correctly yourself
    }

Same is to be done in your GamePlay scene, so that it does not start multiplying in gameplay scene.

I hope I am clear with my point.