Setting Initial parameter values by script

Unity
1

inspector
inspector1285×249 19.3 KB

Is there a way to set initial parameter values by script? I tried SetParameter but it only works when the event is currently playing. I need to set it when the actor is spawning. I can’t do it in inspector because the value being set is from some file.
Part of my code:
code
code833×148 25.7 KB

2

Hi,

An option may be rather than using the Emitter instance, if you create the instance yourself:

private FMOD.Studio.EventInstance inst;

void Start()
{
	inst = FMODUnity.RuntimeManager.CreateInstance("event:/Sound/" + d.moveSOund);
	if (!inst.isValid())
	{
		Debug.Log("Inst is not valid yet");
	}
	else
	{
		Debug.Log("Inst is valid right after creating it");
		FMOD.RESULT result = inst.setParameterByName("Fraction", (int)d.fraction, false);
		if (result != FMOD.RESULT.OK)
		{
			Debug.Log($"Failed to set param with result {result}");
		}
		else
		{
			Debug.Log("Successfully set the parameter without playing the event");
		}
	}
}

Unfortunately, as the emitter does not create the instance till it is about to be played it will not be valid for the parameter to be set.

Hope this helps!

3

Do I need to free/destroy the EventInstance when the gameobject is destroyed?

4

Yes, you can call inst.release() right after it is started so that when the event stops it is cleaned up automatically. More info can be found here: FMOD Engine | Studio API Reference - Studio::EventInstance

5

:laughing: haha I’m actually curious on how emitter’s “Initial Parameter Values” works in the inspector.

6

Ah sorry for the confusion.

In the StudioEventEmitter.cs script in the PlayInstance() function, after the instance is created it will loop through a list of Params like we were doing when creating the instance our self:

foreach (var param in Params) // Line 297
{
    instance.setParameterByID(param.ID, param.Value);
}

Hope this helps!