AActor* UVREditorMode::SpawnTransientSceneActor(TSubclassOf<AActor> ActorClass, const FString& ActorName, const bool bWithSceneComponent) const
{
const bool bWasWorldPackageDirty = GetWorld()->GetOutermost()->IsDirty();
// @todo vreditor: Needs respawn if world changes (map load, etc.) Will that always restart the editor mode anyway?
FActorSpawnParameters ActorSpawnParameters;
ActorSpawnParameters.Name = MakeUniqueObjectName( GetWorld(), ActorClass, *ActorName ); // @todo vreditor: Without this, SpawnActor() can return us an existing PendingKill actor of the same name! WTF?
ActorSpawnParameters.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;
ActorSpawnParameters.ObjectFlags = EObjectFlags::RF_Transient;
check( ActorClass != nullptr );
AActor* NewActor = GetWorld()->SpawnActor< AActor >( ActorClass, ActorSpawnParameters );
NewActor->SetActorLabel( ActorName );
if( bWithSceneComponent )
{
// Give the new actor a root scene component, so we can attach multiple sibling components to it
USceneComponent* SceneComponent = NewObject<USceneComponent>( NewActor );
NewActor->AddOwnedComponent( SceneComponent );
NewActor->SetRootComponent( SceneComponent );
SceneComponent->RegisterComponent();
}
// Don't dirty the level file after spawning a transient actor
if( !bWasWorldPackageDirty )
{
GetWorld()->GetOutermost()->SetDirtyFlag( false );
}
return NewActor;
}
