RuntimePartitionLHGrid.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "CoreMinimal.h"
#include "WorldGridPreviewer.h"
#include "WorldPartition/RuntimeHashSet/RuntimePartition.h"
#include "RuntimePartitionLHGrid.generated.h"
 
#define UE_API ENGINE_API
 
namespace UE::Private::WorldPartition
{
    struct FStreamingDescriptor;
};
 
UCLASS(MinimalAPI)
class URuntimePartitionLHGrid : public URuntimePartition
{
    GENERATED_BODY()
 
    friend class UWorldPartitionRuntimeHashSet;
    friend class UWorldPartitionRuntimeSpatialHash;
    friend struct UE::Private::WorldPartition::FStreamingDescriptor;
 
public:
#if WITH_EDITOR
    //~ Begin UObject Interface.
    UE_API virtual bool CanEditChange(const FProperty* InProperty) const override;
    UE_API virtual void PreEditChange(FProperty* InPropertyAboutToChange) override;
    UE_API virtual void PostEditChangeProperty(FPropertyChangedEvent& InPropertyChangedEvent) override;
    //~ End UObject Interface.
 
    //~ Begin URuntimePartition interface
    virtual bool SupportsHLODs() const override { return true; }
    UE_API virtual void InitHLODRuntimePartitionFrom(const URuntimePartition* InRuntimePartition, int32 InHLODIndex) override;
    UE_API virtual void UpdateHLODRuntimePartitionFrom(const URuntimePartition* InRuntimePartition) override;
    UE_API virtual void SetDefaultValues() override;
#endif
    UE_API virtual bool IsValidPartitionTokens(const TArray<FName>& InPartitionTokens) const override;
#if WITH_EDITOR
    UE_API virtual bool GenerateStreaming(const FGenerateStreamingParams& InParams, FGenerateStreamingResult& OutResult) override;
    UE_API virtual FArchive& AppendCellGuid(FArchive& InAr) override;
    //~ End URuntimePartition interface
 
    uint32 GetCellSize() const
    {
        return CellSize;
    }
#endif
 
private:
#if WITH_EDITORONLY_DATA
    UPROPERTY(EditAnywhere, Category = RuntimeSettings, meta=(DisplayPriority = 0))
    uint32 CellSize = 25600;
 
    UPROPERTY(EditAnywhere, Category = RuntimeSettings, meta=(DisplayPriority = 1, EditCondition="HLODIndex == INDEX_NONE", EditConditionHides))
    FVector Origin = FVector::ZeroVector;
 
    UPROPERTY(EditAnywhere, Category = RuntimeSettings, meta=(DisplayPriority = 1, EditCondition="HLODIndex == INDEX_NONE", EditConditionHides))
    bool bIs2D = false;
 
    UPROPERTY(EditAnywhere, Category = RuntimeSettings, Transient, SkipSerialization, meta=(DisplayPriority=10, DisplayName = "Debug - Show Grid Preview"))
    bool bShowGridPreview = false;
#endif
 
#if WITH_EDITOR
    TUniquePtr<FWorldGridPreviewer> WorldGridPreviewer;
#endif
};
 
#undef UE_API