C++ editor spawn static mesh

[anonymous_user_c105bc86]

This is more a problem of me not knowing what to search for, and looking for the way. In C++, when I create a component and add it to an actor, at runtime everything works as expected. The problem that I am unsure of is related to the editor.

If I open an actor blueprint and add a static mesh component to it, when I change the static mesh it appears in the viewport of the blueprint. Also when that actor is placed in the level, the static mesh is visible in the level.

If I create an actor and add a static mesh component to it through code, it is created correctly and at runtime it spawns the mesh correctly. However, I do not see the mesh in the viewport, and when I place an actor in the level, the manipulator widget appears correctly, but there is no mesh. To be explicit,

• Create actor in C++
• Add static mesh component in C++
• Derive blueprint from actor
• In editor, set the static mesh component
• Static mesh does not show up in viewport
• Drag blueprint into scene
• Static mesh does not show up in the scene

My guess is there is another step, but I’m not sure what to search for to find that step. I only find pages related to creating and attaching components. Can someone point me in the right direction?

Thanks.

[MC1RScorpion]

I am experiencing the exact same behaviour and would appreciate any insight into the reason or the solution.

[Nachtmahr]

Would be nice if any off you can provide source Code. We are not Mindreaders after all =)

(Upload to www.pastebin.com or similar sites)

[anonymous_user_c105bc86]

I never found out the solution to this, so we have worked around it instead. If I need something to show up in the viewport, I have been adding those components directly in the editor. For components that were added in C++, we can select and move the transform in the editor, but you will not see the associated object.

[GigasightMedia]

Are you adding the component in the C++ constructor, or within another method?

[anonymous_user_c105bc86]

So, I just tried this again with the following code. This works as expected. We are using a custom build of 4.14, but we have not made any changes to “fix” this issue. It appears to have fixed itself, so it may just require a restart of the editor and/or PC.

//
// VRPlayer.h
//

UCLASS()
class SHARED_PROJECT_API AVrPlayerTestPlayer : public APawn
{
  GENERATED_BODY()

public:

  AVrPlayerTestPlayer(const FObjectInitializer& ObjectInitializer);
  ~AVrPlayerTestPlayer();

  UPROPERTY(BlueprintReadWrite, EditAnywhere, Category = "BRB|Actor|VrPlayer")
    UCapsuleComponent*  SceneRootNode = nullptr;

  UPROPERTY(BlueprintReadWrite, EditAnywhere, Category = "BRB|Actor|VrPlayer")
    UStaticMeshComponent* VRDebugStaticMeshPlayer = nullptr;
};

//
// VRPlayer.cpp
//


AVrPlayerTestPlayer::AVrPlayerTestPlayer(const FObjectInitializer& ObjectInitializer) {

  SceneRootNode = CreateDefaultSubobject<UCapsuleComponent>(TEXT("CapsuleComponent"));
  SetRootComponent(SceneRootNode);

  VRDebugStaticMeshPlayer = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("StaticMeshComponent"));
  VRDebugStaticMeshPlayer->AttachToComponent(SceneRootNode, FAttachmentTransformRules::KeepRelativeTransform);
}

AVrPlayerTestPlayer::~AVrPlayerTestPlayer() {

}

///-------------------------------

Create a blueprint from this actor. Open the actor in the editor. Set a value to the static mesh component. The viewport, which previously did not display the static mesh, is now correctly displaying the static mesh.