Is using a TSet a correct way to get only actors once after a sweep multi?

Development Programming & Scripting C++
1

Hello, I’m still a newbie so I don’t know if there’s a better method to do this.
SweepMultiByChannel fills the TArray with all the components it intercepts, but I’m using it to generate a grenade explosion, so I want to damage each actor inside its range only once.
In order to achieve this I wrote the following code:


TArray<FHitResult> ComponentsInExplosionRange;

GetWorld()->SweepMultiByChannel(
    ComponentsInExplosionRange,
    HitComponent->GetComponentLocation(),
    HitComponent->GetComponentLocation(),
    FQuat::Identity, ECC_Pawn,
    FCollisionShape::MakeSphere(300.f)
);

TSet<APawnBase*> HitPawns;
for (const auto& Component : ComponentsInExplosionRange)
{
    const auto ActorHit = Cast<APawnBase>(Component.GetActor());
    if (ActorHit)
    {
        HitPawns.Add(ActorHit, nullptr);
    }
}

for (const auto& Pawn : HitPawns)
{
    UGameplayStatics::ApplyDamage(
        Pawn,
        Damage,
        ProjectileOwner->GetInstigatorController(),
        this,
        DamageType
    );
}

This is working, but is it a good approach to the problem? Or are there more efficient/elegant ways to obtain the same results?
Thank you!

2

You could always just use the GameplayStatics library, it has a system for Radial Damage already. A TSet isn’t the only way to filter an array though, by any means.



UGameplayStatics::ApplyRadialDamage();