WorldDataLayerReference.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#if WITH_EDITOR
#include "WorldPartition/WorldPartitionHandle.h"
#include "Misc/TVariant.h"
 
class UActorDescContainer;
class AWorldDataLayers;
struct FActorSpawnParameters;
 
class FWorldDataLayersReference
{
public:
    ENGINE_API FWorldDataLayersReference();
 
    UE_DEPRECATED(5.4, "Use UActorDescContainerInstance version instead")
    FWorldDataLayersReference(UActorDescContainer* Container, FName WorldDataLayerName) {}
    ENGINE_API FWorldDataLayersReference(UActorDescContainerInstance* ContainerInstance, FName WorldDataLayerName); // Retrieve Actor
    ENGINE_API FWorldDataLayersReference(const FActorSpawnParameters& SpawnParameters); // Retrieve and Create Actor if Not Found, FActorSpawnParameters::Name must be set
    ENGINE_API FWorldDataLayersReference(FWorldDataLayersReference&& Other);
 
    ENGINE_API ~FWorldDataLayersReference();
 
    bool IsValid() const { return Get() != nullptr; }
 
    AWorldDataLayers* operator->() { return const_cast<AWorldDataLayers*>(const_cast<const FWorldDataLayersReference*>(this)->operator->()); }
    const AWorldDataLayers* operator->() const { return Get(); }
 
    ENGINE_API const AWorldDataLayers* Get() const;
    AWorldDataLayers* Get() { return const_cast<AWorldDataLayers*>(const_cast<const FWorldDataLayersReference*>(this)->Get()); }
 
    ENGINE_API void Reset();
 
    ENGINE_API FWorldDataLayersReference& operator=(FWorldDataLayersReference&& Other);
 
private:
    ENGINE_API bool TrySetReference(UActorDescContainerInstance* ContainerInstance, FName WorldDataLayerName);
 
    TVariant<AWorldDataLayers*, FWorldPartitionReference> WorldDataLayersVariant;
};
 
#endif // WITH_EDITOR