UActorComponent* AActor::AddComponent(FName TemplateName, bool bManualAttachment, const FTransform& RelativeTransform, const UObject* ComponentTemplateContext)
{
UActorComponent* Template = nullptr;
UBlueprintGeneratedClass* BlueprintGeneratedClass = Cast<UBlueprintGeneratedClass>((ComponentTemplateContext != nullptr) ? ComponentTemplateContext->GetClass() : GetClass());
while(BlueprintGeneratedClass != nullptr)
{
Template = BlueprintGeneratedClass->FindComponentTemplateByName(TemplateName);
if(nullptr != Template)
{
break;
}
BlueprintGeneratedClass = Cast<UBlueprintGeneratedClass>(BlueprintGeneratedClass->GetSuperClass());
}
bool bIsSceneComponent = false;
UActorComponent* NewActorComp = CreateComponentFromTemplate(Template);
if(NewActorComp != nullptr)
{
// Call function to notify component it has been created
NewActorComp->OnComponentCreated();
// The user has the option of doing attachment manually where they have complete control or via the automatic rule
// that the first component added becomes the root component, with subsequent components attached to the root.
USceneComponent* NewSceneComp = Cast<USceneComponent>(NewActorComp);
if(NewSceneComp != nullptr)
{
if (!bManualAttachment)
{
if (RootComponent == nullptr)
{
RootComponent = NewSceneComp;
}
else
{
NewSceneComp->AttachTo(RootComponent);
}
}
NewSceneComp->SetRelativeTransform(RelativeTransform);
bIsSceneComponent = true;
}
// Register component, which will create physics/rendering state, now component is in correct position
NewActorComp->RegisterComponent();
UWorld* World = GetWorld();
if (!bRunningUserConstructionScript && World && bIsSceneComponent)
{
UPrimitiveComponent* NewPrimitiveComponent = Cast<UPrimitiveComponent>(NewActorComp);
if (NewPrimitiveComponent && ACullDistanceVolume::CanBeAffectedByVolumes(NewPrimitiveComponent))
{
World->UpdateCullDistanceVolumes(this, NewPrimitiveComponent);
}
}
}
return NewActorComp;
}
