DontDestroyOnLoad object's reference order?

Unity Engine
1

So, let’s say,
there are 2 scenes, s1, s2.
And there is [gm] gameObject script (GameManager).

and s1 has s1object and it has s1script attached, s2 scene has s2object and s2script.

And only [gm] has DontDestroyOnLoad.

Then, if I want to call some function of scene2 or change some vars in scene2 at the start of scene2 being loaded, how can I ?

if(Application.loadedLevel ==…) in [gm]'s update function?
or other more simple solution than not using update mechanic for better performance?

Thanks.

2

You could use OnLevelWasLoaded(int level) to determine when the level is loaded and then just use a boolean to check which level is loaded.

Example:

C#:

//By default Scene 1 is loaded
bool isScene1Loaded = true;

void Update()
{
    if(isScene1Loaded)
    {
         //Scene1 Code
    }
    else
    {
         //Scene2 Code
    }
}

//Called when a level is loaded
void OnLevelWasLoaded(int level)
{
   //if the level that was loaded is scene 2,
   //the given parameter is Zero-Based so,
   //0 equals scene1, 1 equals scene 2, ect.
   if(level == 1)
   {
        //Set isScene1Loaded to false
        //Since Scene1 is not loaded anymore
        isScene1Loaded = false;
    }
}

JS:

var isScene1Loaded : bool = true;

function Update()
{
    if(isScene1Loaded)
    {
         //Scene1 Code
    }
    else
    {
         //Scene2 Code
    }
}

function OnLevelWasLoaded(level : int)
{
    if(level == 1)
    {
        isScene1Loaded = false;
    }
}
3

Thanks!