Can i create & attach a component inside a component ?

Development Programming & Scripting
,
24

An example I just tried and works with components

Header
UFUNCTION()
		void AddComp();

	UPROPERTY(BlueprintReadWrite, editAnywhere)
	UStaticMesh* MeshTest;


CPP

// added input bind in cpp in SetupPlayerInputComponent
PlayerInputComponent->BindAction("AddComp", IE_Pressed, this, &AmcCharacter::AddComp);


void AmcCharacter::AddComp() {
	if (MeshTest != nullptr) {
		UStaticMeshComponent* comp = NewObject<UStaticMeshComponent>(this, UStaticMeshComponent::StaticClass(), TEXT("MyComp"));
		comp->RegisterComponent();
		comp->SetStaticMesh(MeshTest);
		comp->AttachToComponent(GetRootComponent(), FAttachmentTransformRules::SnapToTargetNotIncludingScale);
	}
}

Yes all NewObjects need to be managed more tightly so you need to destroy them if not needed.
Maybe you need to pass them to a TArray that is a uproperty if they are garbage collected. (I’ve only used NewObject for actors so not sure of their lifecycle)