AActor* USCarryObjectComponent::GetActorInView()
{
APawn* PawnOwner = Cast<APawn>(GetOwner());
AController* Controller = PawnOwner->Controller;
if (Controller == nullptr)
{
return nullptr;
}
FVector CamLoc;
FRotator CamRot;
Controller->GetPlayerViewPoint(CamLoc, CamRot);
const FVector TraceStart = CamLoc;
const FVector Direction = CamRot.Vector();
const FVector TraceEnd = TraceStart + (Direction * MaxPickupDistance);
FCollisionQueryParams TraceParams(TEXT("TraceActor"), true, PawnOwner);
TraceParams.bTraceAsyncScene = true;
TraceParams.bReturnPhysicalMaterial = false;
TraceParams.bTraceComplex = false;
FHitResult Hit(ForceInit);
GetWorld()->LineTraceSingleByChannel(Hit, TraceStart, TraceEnd, ECC_Visibility, TraceParams);
/* Check to see if we hit a staticmesh component that has physics simulation enabled */
UStaticMeshComponent* MeshComp = Cast<UStaticMeshComponent>(Hit.GetComponent());
if (MeshComp && MeshComp->IsSimulatingPhysics())
{
return Hit.GetActor();
}
return nullptr;
}
void USCarryObjectComponent::OnPickupMulticast_Implementation(AActor* FocusActor)
{
if (FocusActor && FocusActor->IsRootComponentMovable())
{
/* Find the static mesh (if any) to disable physics simulation while carried
Filter by objects that are physically simulated and can therefor be picked up */
UStaticMeshComponent* MeshComp = Cast<UStaticMeshComponent>(FocusActor->GetComponentByClass(UStaticMeshComponent::StaticClass()));
if (MeshComp && MeshComp->IsSimulatingPhysics())
{
MeshComp->SetCollisionEnabled(ECollisionEnabled::QueryOnly);
MeshComp->SetSimulatePhysics(false);
}
FocusActor->AttachToComponent(this, FAttachmentTransformRules::KeepWorldTransform);
}
}