UE4. How to create a reference to the physical material asset (which I create in editor) in C++

Question

Oftenly, when we want to assign asset to the particular component in C++ we write code like that:

.h

UPROPERTY(BlueprintReadWrite)
UStaticMeshComponent* Body = nullptr;

.cpp

Body = CreateDefaultSubobject<UStaticMeshComponent>("Mesh Component");
// find mesh asset
auto MeshForBody = ConstructorHelpers::FObjectFinder<UStaticMesh>(TEXT
                        ("StaticMesh'/Game/StarterContent/Shapes/Shape_Sphere.Shape_Sphere'"));
if (MeshForBody.Object != nullptr)
{// if asset is finded -> set to the component
    Body->SetStaticMesh(MeshForBody.Object);
}

Question: how can I set the PhysicalMaterial in C++ through the reference to the asset in editor? Is it possible?

.h
    UPROPERTY(EditDefaultsOnly)
    UPhysicalMaterial* MyPhysicalMaterial = nullptr;

.cpp

    ???

Find this, but still waiting maybe the best solution without casting exists:

auto PhysicalMaterialAsset = ConstructorHelpers::FObjectFinder<UObject>(TEXT(
         "PhysicalMaterial'/Game/PhysicsMaterials/MyPhysicsMaterial.MyPhysicsMaterial'"));

if (PhysicalMaterialAsset.Object) 
{ 
    Sphere->BodyInstance.SetPhysMaterialOverride((UPhysicalMaterial*)PhysicalMaterialAsset.Object); 
} 

THNX for any tips in advance ;)

Answer 1

The easiest way is what you've done, then set the material in the Blueprint of whatever the material is attached to. Back in your .cpp file, you can then access the material.

A word of warning though, if you're trying to change any settings and you haven't assigned anything in the Blueprint, Unreal will return the nullptr and crash the editor. To avoid this, always start with:

if (MyPhysicalMaterial) {

This will check if there is something assigned to the material reference before attempting any changes.