inherited UBoxComponent details won't show up in blueprint editor

Development Programming & Scripting C++
1

Hi,

I have this C++ class (extending from AActor), which has been extended in a blueprint class.

I have a UboxComponent that I want to use as an attribute for my class (in my cpp code) . My problem is that : The uboxcomponent details simply won’t show up in my blueprint editor.

Here is how I am creating my properties :

In the actor C++ class, in the .h file, I’ve got :
public :
…

UPROPERTY(EditAnywhere, BlueprintReadWrite)
UStaticMeshComponent* Mesh;

UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = Helicopter, meta = (AllowPrivateAccess = "true"))
    UBoxComponent* Box;

UPROPERTY(EditAnywhere, BlueprintReadWrite)
    USceneComponent* Root;

…

In the actor C++ class, in the .cpp file, I’ve got
ABridgeSwitch::ABridgeSwitch()
{
// Set this actor to call Tick() every frame. You can turn this off to improve performance if you don’t need it.
PrimaryActorTick.bCanEverTick = true;

Root = CreateDefaultSubobject<USceneComponent>(TEXT("Root"));
RootComponent = Root;

Box = CreateDefaultSubobject<UBoxComponent>(TEXT("Box"));
Box->SetupAttachment(RootComponent);

Mesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("Mesh"));
Mesh->SetupAttachment(RootComponent);

…

}

Note that if I add a box manually in the blueprint editor, I can clearly see its details. However, I want to have access to this variable in c++, and be able to create it in my c++ class constructor.

Also, note that this actor is simply composed of :

  • a root component (scenecomponent) that doesnt need to collide to anything or else, it just needs to be there to be the parent of other components
  • a mesh (simple cube) that blocks collisions with other actors
  • a collision box (UBoxComponent) which is larger than the mesh that allows overlapping with other actors.

Thanks for the help.

2

Yeah dude this happens a lot. It’s a real hit and miss in my project and I don’t get it :\

3

Use only EditAnywhere and Category with " " in your UPROPERTY to your UBoxComponent :

UPROPERTY(VisibleAnywhere, Category = “Helicopter”)
UBoxComponent* Box;