How to disable auto activation of the UAudioComponent from C++

Development Audio
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1

Hi guys. Have a trouble here.
Needed to create dynamic massive of UAudioComponent pointers, so can’t declare it as a UPROPERTY.
How can I stop the auto activetion and, though stop auto playing my sounds?

Here is like my massive is declared:
UAudioComponent **SoundComponent;

2

This is old but shows up in Google searches, so here is the answer. This code attaches any number of sounds to an Actor and plays/stops them with by passing in the name.

/**
* List of sound cues played by this actor.
*/
TMap<FName, UAudioComponent*> _soundCues;

/**
* Add a sound component to actor.
* Actor manages sound cues for all components in a map.
*/
void AInteractiveActor::AddSoundComponent(FName soundName, const char* cueAssetNameAndPath)
{
	UAudioComponent* newCue = CreateDefaultSubobject<UAudioComponent>(soundName);
	ConstructorHelpers::FObjectFinder<USoundCue> cueAsset(ANSI_TO_TCHAR(cueAssetNameAndPath));
	
	if (cueAsset.Object != NULL)
	{
		newCue->AttachTo(RootComponent);
		newCue->bAutoActivate = false;
		newCue->SetSound(cueAsset.Object);

		_soundCues.Add(soundName, newCue);
	}
	else
	{
		UE_LOG(MCS, Error, TEXT("%s: add sound component failed!"), *GetUniqueName());
	}
}

/**
* Play a sound cue.
*/
void AInteractiveActor::PlaySound(FName cueName)
{
	// find sound in cue list
	UAudioComponent* cue = _soundCues.FindRef(cueName);
	if (cue && !cue->IsPlaying())
	{
		cue->Play();
	}
}

/**
* Stop a sound cue being played.
*/
void AInteractiveActor::StopSound(FName cueName)
{
	// find sound in cue list
	UAudioComponent* cue = _soundCues.FindRef(cueName);
	if (cue && cue->IsPlaying())
	{
		cue->Stop();
	}
}
1 Like
3

^^ Use the above code like this:

// add audio component in your Actor constructor
AddSoundComponent("alarm", "/Game/Audio/Test/alert_Cue.alert_Cue");

// play or stop sounds at any time in game like this
PlaySound("alarm");
StopSound("alarm");