PackedLevelActorTypes.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#if WITH_EDITOR
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Misc/Crc.h"
#include "Logging/LogMacros.h"
 
using FPackedLevelActorBuilderID = uint32;
 
class FPackedLevelActorBuilderCluster
{
    FPackedLevelActorBuilderID BuilderID;
 
public:
    FPackedLevelActorBuilderCluster(FPackedLevelActorBuilderID InBuilderID)
        : BuilderID(InBuilderID) {}
    virtual ~FPackedLevelActorBuilderCluster() {}
 
    FPackedLevelActorBuilderID GetBuilderID() const { return BuilderID; }
 
    virtual uint32 ComputeHash() const
    {
        return FCrc::TypeCrc32(BuilderID);
    }
 
    virtual bool Equals(const FPackedLevelActorBuilderCluster& Other) const
    {
        return BuilderID == Other.BuilderID;
    }
 
private:
    FPackedLevelActorBuilderCluster(const FPackedLevelActorBuilderCluster&) = delete;
    FPackedLevelActorBuilderCluster& operator=(const FPackedLevelActorBuilderCluster&) = delete;
};
 
class FPackedLevelActorBuilderClusterID
{
public:
    static ENGINE_API FPackedLevelActorBuilderClusterID Invalid;
 
    FPackedLevelActorBuilderClusterID() : Hash(0)
    {
    }
 
    FPackedLevelActorBuilderClusterID(FPackedLevelActorBuilderClusterID&& Other)
        : Hash(Other.Hash), Data(MoveTemp(Other.Data))
    {
    }
 
    FPackedLevelActorBuilderClusterID(TUniquePtr<FPackedLevelActorBuilderCluster>&& InData)
        : Data(MoveTemp(InData))
    {
        Hash = Data->ComputeHash();
    }
        
    bool operator==(const FPackedLevelActorBuilderClusterID& Other) const
    {
        return (Hash == Other.Hash) && Data->Equals(*Other.Data);
    }
 
    bool operator!=(const FPackedLevelActorBuilderClusterID& Other) const
    {
        return !(*this == Other);
    }
 
    uint32 GetHash() const { return Hash; }
 
    FPackedLevelActorBuilderID GetBuilderID() const { return Data->GetBuilderID(); }
        
    friend uint32 GetTypeHash(const FPackedLevelActorBuilderClusterID& ID)
    {
        return ID.GetHash();
    }
 
    FPackedLevelActorBuilderCluster* GetData() const
    {
        return Data.Get();
    }
 
private:
    FPackedLevelActorBuilderClusterID(const FPackedLevelActorBuilderClusterID&) = delete;
    FPackedLevelActorBuilderClusterID& operator=(const FPackedLevelActorBuilderClusterID&) = delete;
 
    uint32 Hash;
    TUniquePtr<FPackedLevelActorBuilderCluster> Data;
};
 
#endif