Overlap events initialized in constructor do not overlap

Development Programming & Scripting C++
1

I’ve been reading about this all over the forums. Subobjects do not overlap if initialized in the constructor. The stated workaround is to initialize the the overlap in BeginPlay, which works. The thing is, the documentation says it should work in the constructor and I’ve seen tutorials showing that it does. But following said tutorials does not produce the same results. I find this to be a curious thing.

Here’s my setup:


 ARocket(const FObjectInitializer &objectInitializer); 



 UFUNCTION()
    void OnComponentBeginOverlap(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult); 



 // Sets default values
ARocket::ARocket(const FObjectInitializer &objectInitializer):Super(objectInitializer)
{
     // Set this pawn to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
    PrimaryActorTick.bCanEverTick = true;

    // Rocket
    //static ConstructionHelpers::FObjectFinder<UStaticMesh>;
    RocketMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("Rocket Mesh"));
    RocketMesh->SetupAttachment(RootComponent);
    RootComponent = RocketMesh;

    // Camera
    SpringArm = CreateDefaultSubobject<USpringArmComponent>(TEXT("Spring Arm"));
    SpringArm->SetupAttachment(RocketMesh);
    SpringArm->bInheritPitch = false;
    SpringArm->bInheritRoll = false;
    SpringArm->bInheritYaw = false;
    DefaultArmLength = 300.0f; // defined in header
    SpringArm->TargetArmLength = DefaultArmLength;
    SpringArm->bEnableCameraLag = true;

    Camera = CreateDefaultSubobject<UCameraComponent>(TEXT("Camera"));
    Camera->SetupAttachment(SpringArm);

    // Collision bodies
    RocketCapsuleLower = CreateDefaultSubobject<UCapsuleComponent>(TEXT("Rocket Capsule Lower"));
    RocketCapsuleLower->SetupAttachment(RocketMesh);
    RocketCapsuleLower->SetRelativeLocation(FVector(0.0f, 0.0f, -17.0f));
    RocketCapsuleLower->SetCapsuleHalfHeight(30.0f);
    RocketCapsuleLower->SetCapsuleRadius(25.0f);
    RocketCapsuleLower->SetGenerateOverlapEvents(true);
    RocketCapsuleLower->SetCollisionEnabled(ECollisionEnabled::QueryOnly);
    RocketCapsuleLower->SetCollisionResponseToChannel(ECollisionChannel::ECC_Visibility, ECollisionResponse::ECR_Overlap);
    RocketCapsuleLower->OnComponentBeginOverlap.AddDynamic(this, &ARocket::OnComponentBeginOverlap);





 // Testing Collision Bodies
void ARocket::OnComponentBeginOverlap(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)
{
    GEngine->AddOnScreenDebugMessage(-1, 0.5f, FColor::Red, TEXT("You Hit Something!"));
}

As mentioned above, setting the line


 RocketCapsuleLower->OnComponentBeginOverlap.AddDynamic(this, &ARocket::OnComponentBeginOverlap);

in BeginPlay does work. The question is, why doesn’t it work from the constructor? I thought adding FObjectInitializer would have solved it but it didn’t and seems unnecessary.