80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "GeometryCollection/GeometryCollectionISMPoolSubSystem.h"
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#include "GeometryCollection/GeometryCollectionISMPoolActor.h"
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#include "Engine/World.h"
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//----------------------------------------------------------------------//
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// UGeometryCollectionISMPoolSubSystem
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//----------------------------------------------------------------------//
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UGeometryCollectionISMPoolSubSystem::UGeometryCollectionISMPoolSubSystem()
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{
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}
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void UGeometryCollectionISMPoolSubSystem::Initialize(FSubsystemCollectionBase& Collection)
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{
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Super::Initialize(Collection);
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PRAGMA_DISABLE_DEPRECATION_WARNINGS
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Collection.InitializeDependency<UGeometryCollectionISMPoolSubSystem>();
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PRAGMA_ENABLE_DEPRECATION_WARNINGS
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}
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void UGeometryCollectionISMPoolSubSystem::Deinitialize()
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{
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PerLevelISMPoolActors.Reset();
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Super::Deinitialize();
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}
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PRAGMA_DISABLE_DEPRECATION_WARNINGS
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AGeometryCollectionISMPoolActor* UGeometryCollectionISMPoolSubSystem::FindISMPoolActor(ULevel* Level)
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{
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AGeometryCollectionISMPoolActor* ISMPoolActor = nullptr;
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// on demand creation of the actor based on level
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TObjectPtr<AGeometryCollectionISMPoolActor>* ISMPoolActorInLevel = PerLevelISMPoolActors.Find(Level);
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if (ISMPoolActorInLevel)
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{
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ISMPoolActor = ISMPoolActorInLevel->Get();
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}
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else
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{
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// we keep it as transient to avoid accumulation of those actors in saved levels
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FActorSpawnParameters Params;
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Params.ObjectFlags = EObjectFlags::RF_DuplicateTransient | EObjectFlags::RF_Transient;
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Params.OverrideLevel = Level;
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ISMPoolActor = GetWorld()->SpawnActor<AGeometryCollectionISMPoolActor>(Params);
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// spawn can still fail if we are in the middle or tearing down the world
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if (ISMPoolActor)
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{
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PerLevelISMPoolActors.Add(Level, ISMPoolActor);
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// make sure we capture when the actor get removed so we can update our internal structure accordingly
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ISMPoolActor->OnEndPlay.AddDynamic(this, &UGeometryCollectionISMPoolSubSystem::OnActorEndPlay);
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}
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}
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return ISMPoolActor;
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}
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PRAGMA_ENABLE_DEPRECATION_WARNINGS
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void UGeometryCollectionISMPoolSubSystem::OnActorEndPlay(AActor* InSource, EEndPlayReason::Type Reason)
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{
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if (ULevel* ActorLevel = InSource->GetLevel())
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{
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PRAGMA_DISABLE_DEPRECATION_WARNINGS
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PerLevelISMPoolActors.Remove(ActorLevel);
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PRAGMA_ENABLE_DEPRECATION_WARNINGS
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}
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}
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PRAGMA_DISABLE_DEPRECATION_WARNINGS
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void UGeometryCollectionISMPoolSubSystem::GetISMPoolActors(TArray<AGeometryCollectionISMPoolActor*>& OutActors) const
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PRAGMA_ENABLE_DEPRECATION_WARNINGS
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{
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for (const auto& MapEntry : PerLevelISMPoolActors)
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{
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if (MapEntry.Value != nullptr)
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{
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OutActors.Add(MapEntry.Value);
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}
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}
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}
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