C++ USceneComponent::GetAttachChildren方法代码示例

AActor::FActorTransactionAnnotation::FActorTransactionAnnotation(const AActor* Actor, const bool bCacheRootComponentData)
	: ComponentInstanceData(Actor)
{
	USceneComponent* ActorRootComponent = Actor->GetRootComponent();
	if (bCacheRootComponentData && ActorRootComponent && ActorRootComponent->IsCreatedByConstructionScript())
	{
		bRootComponentDataCached = true;
		RootComponentData.Transform = ActorRootComponent->ComponentToWorld;
		RootComponentData.Transform.SetTranslation(ActorRootComponent->GetComponentLocation()); // take into account any custom location

		if (ActorRootComponent->GetAttachParent())
		{
			RootComponentData.AttachedParentInfo.Actor = ActorRootComponent->GetAttachParent()->GetOwner();
			RootComponentData.AttachedParentInfo.AttachParent = ActorRootComponent->GetAttachParent();
			RootComponentData.AttachedParentInfo.AttachParentName = ActorRootComponent->GetAttachParent()->GetFName();
			RootComponentData.AttachedParentInfo.SocketName = ActorRootComponent->GetAttachSocketName();
			RootComponentData.AttachedParentInfo.RelativeTransform = ActorRootComponent->GetRelativeTransform();
		}

		for (USceneComponent* AttachChild : ActorRootComponent->GetAttachChildren())
		{
			AActor* ChildOwner = (AttachChild ? AttachChild->GetOwner() : NULL);
			if (ChildOwner && ChildOwner != Actor)
			{
				// Save info about actor to reattach
				FActorRootComponentReconstructionData::FAttachedActorInfo Info;
				Info.Actor = ChildOwner;
				Info.SocketName = AttachChild->GetAttachSocketName();
				Info.RelativeTransform = AttachChild->GetRelativeTransform();
				RootComponentData.AttachedToInfo.Add(Info);
			}
		}
	}
	else
	{
		bRootComponentDataCached = false;
	}
}

FChildActorComponentInstanceData::FChildActorComponentInstanceData(const UChildActorComponent* Component)
	: FSceneComponentInstanceData(Component)
	, ChildActorName(Component->GetChildActorName())
	, ComponentInstanceData(nullptr)
{
	if (Component->GetChildActor())
	{
		ComponentInstanceData = new FComponentInstanceDataCache(Component->GetChildActor());
		// If it is empty dump it
		if (!ComponentInstanceData->HasInstanceData())
		{
			delete ComponentInstanceData;
			ComponentInstanceData = nullptr;
		}

		USceneComponent* ChildRootComponent = Component->GetChildActor()->GetRootComponent();
		if (ChildRootComponent)
		{
			for (USceneComponent* AttachedComponent : ChildRootComponent->GetAttachChildren())
			{
				if (AttachedComponent)
				{
					AActor* AttachedActor = AttachedComponent->GetOwner();
					if (AttachedActor != Component->GetChildActor())
					{
						FAttachedActorInfo Info;
						Info.Actor = AttachedActor;
						Info.SocketName = AttachedComponent->GetAttachSocketName();
						Info.RelativeTransform = AttachedComponent->GetRelativeTransform();
						AttachedActors.Add(Info);
					}
				}
			}
		}
	}
}