Why SetRelativeLocation and Rotation don't work in PostEditChangeChainProperty function call?

Development Programming & Scripting Blueprint
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1

It seems that location and rotation functions of UStaticMeshComponent class are not working when you use then inside PostEditChangeChainProperty, PostEditChangeProperty and PostInitProperties. I want to create a private UStaticMeshComponent and expose only location, rotation, static mesh and material properties so that all other options are defined from code (in other words: I want to hide all of the StaticMeshComponent options except these few). Updating the mesh and material inside PostEditChangeProperty works fine. The problem is that calling MyStaticMeshComponent->SetRelativeLocation does not actually change the relative location of the mesh in the blueprint viewport. I have to close the blueprint window, open it again so that it updates correctly. Consider this code:

.H Code

UCLASS(Blueprintable)
class MyGame_API AMyClass: public AActor
{
	GENERATED_BODY()
	
public:	
	AVanishingObject();

	UPROPERTY(BlueprintReadWrite, EditDefaultsOnly, Category=Geometry)
	FVector FLocalLocation;
	UPROPERTY(BlueprintReadWrite, EditDefaultsOnly, Category=Geometry)
	FRotator FLocalRotation;

	UPROPERTY(BlueprintReadOnly)
	class USceneComponent* FSceneComponent;

#if WITH_EDITOR
	virtual void PostInitProperties() override;
	virtual void PostEditChangeChainProperty(struct FPropertyChangedChainEvent& PropertyChangedEvent) override;
#endif

private:
	UPROPERTY()
	class UStaticMeshComponent* UStaticMeshComponentBase;
};

CPP Code

// Sets default values
AMyClass::AMyClass()
{
	FSceneComponent = CreateDefaultSubobject<USceneComponent>(TEXT("SceneComponent"));
	SetRootComponent(FSceneComponent);

	FLocalLocation = FVector(0, 0, 0);
	FLocalRotation = FRotator::ZeroRotator;

	UStaticMeshComponentBase = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("StaticMeshBase"));
	UStaticMeshComponentBase->AttachTo(RootComponent);
	UStaticMeshComponentBase->SetRelativeLocationAndRotation(FLocalLocation, FLocalRotation.Quaternion(), false, nullptr, ETeleportType::None);
}

#if WITH_EDITOR
void AMyClass::PostInitProperties()
{
	Super::PostInitProperties();
	UStaticMeshComponentBase->SetRelativeRotation(FLocalRotation.Quaternion(), false, nullptr, ETeleportType::None);
}

void AMyClass::PostEditChangeChainProperty(struct FPropertyChangedChainEvent& PropertyChangedEvent)
{
	FName PropertyName = (PropertyChangedEvent.Property != nullptr) ? PropertyChangedEvent.Property->GetFName() : NAME_None;

	if (UStaticMeshComponentBase != nullptr)
	{
		if (PropertyName == FName(TEXT("Roll")) || PropertyName == FName(TEXT("Pitch")) || PropertyName == FName(TEXT("Yaw")))
		{
			UStaticMeshComponentBase->SetMobility(EComponentMobility::Movable);
			UStaticMeshComponentBase->SetRelativeRotation(FLocalRotation.Quaternion(), false, nullptr, ETeleportType::None);
		}

		if (PropertyName == FName(TEXT("X")) || PropertyName == FName(TEXT("Y")) || PropertyName == FName(TEXT("Z")))
		{
			UStaticMeshComponentBase->SetRelativeLocation(FLocalLocation, false, nullptr, ETeleportType::None);
		}
	}
	Super::PostEditChangeChainProperty(PropertyChangedEvent);
}
#endif

void AMyClass::BeginPlay()
{
	Super::BeginPlay();
	
	if (UStaticMeshComponentBase != nullptr)
	{
		UStaticMeshComponentBase->SetMobility(EComponentMobility::Static);
	}
}

Is there any way to make SetRelativeRotation and SetRelativeLocation work during blueprint editing?

2

Bump bump bump

3

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