MovieSceneSequenceID.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "UObject/Class.h"
#include "EntitySystem/MovieSceneComponentDebug.h"
#include "MovieSceneSequenceID.generated.h"
 
USTRUCT()
struct FMovieSceneSequenceID
{
    GENERATED_BODY()
 
    constexpr FMovieSceneSequenceID()
        : Value(-1)
    {}
 
    constexpr explicit FMovieSceneSequenceID(uint32 InValue)
        : Value(InValue)
    {}
 
    inline friend bool operator==(FMovieSceneSequenceID LHS, FMovieSceneSequenceID RHS)
    {
        return LHS.Value == RHS.Value;
    }
    
    inline friend bool operator!=(FMovieSceneSequenceID LHS, FMovieSceneSequenceID RHS)
    {
        return LHS.Value != RHS.Value;
    }
 
    inline friend bool operator<(FMovieSceneSequenceID LHS, FMovieSceneSequenceID RHS)
    {
        return LHS.Value < RHS.Value;
    }
 
    inline friend bool operator>(FMovieSceneSequenceID LHS, FMovieSceneSequenceID RHS)
    {
        return LHS.Value > RHS.Value;
    }
 
    inline friend uint32 GetTypeHash(FMovieSceneSequenceID In)
    {
        return GetTypeHash(In.Value);
    }
 
    inline FMovieSceneSequenceID AccumulateParentID(FMovieSceneSequenceID InParentID) const
    {
        return Value == 0 ? InParentID : FMovieSceneSequenceID(HashCombine(Value, InParentID.Value));
    }
 
    inline bool Serialize(FArchive& Ar)
    {
        Ar << Value;
        return true;
    }
 
    inline friend FArchive& operator<<(FArchive& Ar, FMovieSceneSequenceID& SequenceID)
    {
        SequenceID.Serialize(Ar);
        return Ar;
    }
 
    inline uint32 GetInternalValue() const
    {
        return Value;
    }
 
    inline bool IsValid() const
    {
        return Value != -1;
    }
 
private:
 
    UPROPERTY()
    uint32 Value;
};
 
template<>
struct TStructOpsTypeTraits<FMovieSceneSequenceID> : public TStructOpsTypeTraitsBase2<FMovieSceneSequenceID>
{
    enum
    {
        WithSerializer = true,
        WithCopy = true
    };
    static constexpr EPropertyObjectReferenceType WithSerializerObjectReferences = EPropertyObjectReferenceType::None;
};
 
typedef TCallTraits<FMovieSceneSequenceID>::ParamType FMovieSceneSequenceIDRef;
 
namespace MovieSceneSequenceID
{
    inline constexpr FMovieSceneSequenceID Invalid = FMovieSceneSequenceID(-1);
    inline constexpr FMovieSceneSequenceID Root = FMovieSceneSequenceID(0);
}
 
inline FString LexToString(const FMovieSceneSequenceID& SequenceID)
{
    return *FString::Printf(TEXT("SeqID(%d)"), SequenceID.GetInternalValue());
}