HLODProxyDesc.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Engine/MaterialMerging.h"
#include "SceneTypes.h"
#include "HLODProxyDesc.generated.h"
 
class ALODActor;
class UStaticMesh;
class UInstancedStaticMeshComponent;
class UMaterialInterface;
 
USTRUCT()
struct FHLODISMComponentDesc
{
    GENERATED_BODY()
 
public:
    FHLODISMComponentDesc() = default;
    FHLODISMComponentDesc(const UInstancedStaticMeshComponent* InISMComponent);
 
    bool operator == (const FHLODISMComponentDesc& Other) const;
 
public:
    UPROPERTY()
    TObjectPtr<UStaticMesh> StaticMesh = nullptr;
    
    UPROPERTY()
    TObjectPtr<UMaterialInterface> Material = nullptr;
 
    UPROPERTY()
    TArray<FTransform> Instances;
 
    UPROPERTY()
    TArray<FCustomPrimitiveData> InstancesCustomPrimitiveData;
};
 
UCLASS()
class UHLODProxyDesc : public UObject
{
    GENERATED_BODY()
 
    friend class UHLODProxy;
 
public:
#if WITH_EDITOR
    bool ShouldUpdateDesc(const ALODActor* InLODActor) const;
    
    bool UpdateFromLODActor(const ALODActor* InLODActor);
    
    ALODActor* SpawnLODActor(ULevel* InLevel) const;
#endif
 
private:
#if WITH_EDITORONLY_DATA
    UPROPERTY()
    TArray<FName> SubActors;
 
    UPROPERTY()
    TObjectPtr<UStaticMesh> StaticMesh;
 
    UPROPERTY()
    TArray<FHLODISMComponentDesc> ISMComponentsDesc;
 
    UPROPERTY()
    float LODDrawDistance;
 
    UPROPERTY()
    bool bOverrideMaterialMergeSettings;
 
    UPROPERTY()
    FMaterialProxySettings MaterialSettings;
 
    UPROPERTY()
    bool bOverrideTransitionScreenSize;
 
    UPROPERTY()
    float TransitionScreenSize;
 
    UPROPERTY()
    bool bOverrideScreenSize;
 
    UPROPERTY()
    int32 ScreenSize;
 
    UPROPERTY()
    FName Key;
 
    UPROPERTY()
    int32 LODLevel;
 
    UPROPERTY()
    FString LODActorTag;
 
    UPROPERTY()
    FVector Location;
 
    UPROPERTY()
    FTransform HLODBakingTransform;
 
    UPROPERTY()
    TArray<TSoftObjectPtr<UHLODProxyDesc>> SubHLODDescs;
#endif
};