(Unreal : 입문) 15. 아이템 줍기

UCLASS()
class TESTUNREALENGINE_API AMyWeapon : public AActor
{
	// ...

    // 박스로 Trigger영역을 지정할 예정
	UPROPERTY(VisibleAnywhere)
	class UBoxComponent* Trigger;
};

AMyWeapon::AMyWeapon()
{
 	// Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = false;
	
	Weapon = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("WEAPON"));
	Trigger = CreateDefaultSubobject<UBoxComponent>(TEXT("TRIGGER"));

	static ConstructorHelpers::FObjectFinder<UStaticMesh> SW(TEXT("StaticMesh'/Game/ParagonGreystone/FX/Meshes/Heroes/Greystone/SM_Greystone_Blade_01.SM_Greystone_Blade_01'"));
	if (SW.Succeeded())
	{
		Weapon->SetStaticMesh(SW.Object);
	}

	Weapon->SetupAttachment(RootComponent);
	Trigger->SetupAttachment(Weapon);

	Weapon->SetCollisionProfileName(TEXT("MyCollectible"));
	Trigger->SetCollisionProfileName(TEXT("MyCollectible"));
	Trigger->SetBoxExtent(FVector(30.f, 30.f, 30.f));
}

// ...

void AMyWeapon::PostInitializeComponents()
{
	Super::PostInitializeComponents();

    // 델리게이트 지정
	Trigger->OnComponentBeginOverlap.AddDynamic(this, &AMyWeapon::OnCharacterOverlap);
}

void AMyWeapon::OnCharacterOverlap(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)
{
	UE_LOG(LogTemp, Log, TEXT("Overlapped"));

	AMyCharacter* MyCharacter = Cast<AMyCharacter>(OtherActor);
	if (MyCharacter)
	{
		FName WeaponSocket(TEXT("hand_l_socket"));

		AttachToComponent(MyCharacter->GetMesh(),
			FAttachmentTransformRules::SnapToTargetNotIncludingScale,
			WeaponSocket);
	}
}