AddOnActorSpawnedHandler Usage

[MattW]

@BurakShamansoft;172716

Thank you Matt, you are lifesaver As far as i understand, MyClass is a general purpose class, is that right? I mean for my understanding, in only one class I’m gonna declare the registration and all kind of aactor based objects will come to MyClass::OnActorSpawned in the same world. Or is it inversely?

MyClass was just a example name. Meaning you change that to whatever the name of the class you are using this in. So if you were using this in a actor class you had created, say named “MyCustomActor”. Then the code would be something like:

void AMyCustomActor::RegisterSpawnHandler(UWorld* InWorld)
{
	FOnActorSpawned::FDelegate ActorSpawnedDelegate = FOnActorSpawned::FDelegate::CreateUObject(this, &AMyCustomActor::OnActorSpawned);
	InWorld->AddOnActorSpawnedHandler(ActorSpawnedDelegate);
}

void AMyCustomActor::OnActorSpawned(AActor* InActor)
{
	//a new actor (InActor) has been spawned in the world.
}

Then once you have called RegisterSpawnHandler (maybe from beginplay), every time a new actor is pawned in the world that Actor is in then OnActorSpawned should be called with the param being the actor that was spawned. Also as I said before, you also want to save the FOnActorSpawned::FDelegate ActorSpawnedDelegate as a class variable, so that when your actor instance is deleted you can remove the delegate.