FPointDamageEvent Doesn't call InternalTakePointDamage

Development Programming & Scripting
1

I’m attempting to call TakeDamage() using my custom Weapon Class for some basic damage system. However, I can’t get the Point Damage to work properly.

void ABLTWeapon::PerformShot()
{
	if (!GetOwner() || !Instigator)
		return;
	
	FCollisionQueryParams CollisionParams;
	CollisionParams.AddIgnoredActor(this);
	CollisionParams.AddIgnoredActor(Instigator);
	FMinimalViewInfo CamInfo;
	Cast<ABLTPlayerPawn>(Instigator)->CameraComponent->GetCameraView(FApp::GetDeltaTime(), CamInfo);
	FVector StartLoc = CamInfo.Location;
	FVector EndLoc = StartLoc + (CamInfo.Rotation.Vector() * 512);
	FHitResult HitResult;
	
	if (GetWorld()->LineTraceSingle(HitResult, StartLoc, EndLoc, ECC_GameTraceChannel1, CollisionParams))
		DrawDebugLine(GetWorld(), CamInfo.Location, HitResult.Location, FColor::Magenta, true);
	else
		DrawDebugLine(GetWorld(), CamInfo.Location, CamInfo.Location + (CamInfo.Rotation.Vector() * 512), FColor::Magenta, true);
	
	FPointDamageEvent DamageEvent;
	DamageEvent.HitInfo = HitResult;
	DamageEvent.DamageTypeClass = UDamageType::StaticClass();

	

	if (HitResult.Actor != NULL)
		HitResult.Actor->TakeDamage(Damage,DamageEvent, Instigator->GetController(), this);

	//Sets a timer to our "delay" between shots, then starts the firing chain again
	GetWorldTimerManager().SetTimer(this, &ABLTWeapon::BeginFire, FireInterval);
	

}

Then inside my BLTPawn class, I have logs setup.

float ABLTPawn::TakeDamage(float DamageAmount, struct FDamageEvent const& DamageEvent, class AController* EventInstigator, AActor* DamageCauser)
{

	UE_LOG(LogNPC, All, TEXT("%s::TakeDamge(DamageAmount:%f,DamageEvent: TODO, EventInstigator:%s,DamageCauser:%s"), *GetName(), DamageAmount, *EventInstigator->GetName(), *DamageCauser->GetName());

	UE_LOG(LogNPC, All, TEXT("Eventdamage.ClassID: %f"), DamageEvent.ClassID);
	Super::TakeDamage(DamageAmount, DamageEvent, EventInstigator, DamageCauser);

	return 0;
}

float ABLTPawn::InternalTakePointDamage(float Damage, struct FPointDamageEvent const& RadialDamageEvent, class AController* EventInstigator, AActor* DamageCauser)
{
	UE_LOG(LogNPC, All, TEXT("POINT DAMAGE!!!!!!!!!!!!!!!!!"));
	return 0;
}

However, there is no calling of InternaltakePointDamage. I logged the Class ID as stated, and it keeps coming up as 0 despite the struct default being set to 1. So it seems like the IDing system isn’t operating as intended?

2

Just a guess, but returning 0 from the method may stop damage propegation since there is ‘no damage’.

3

You were right, my out-going “Damage” variable that was being passed through TakeDamage() was the issue, it was set to 0. Once I fixed that, the event began to pass through properly, regardless of ClassID.