TransformStateStream.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "TransformStateStreamHandle.h"
#include "TransformStateStreamMath.h"
#include "TransformStateStream.generated.h"
 
 
// Static state for transform instance. Can only be set upon creation
 
USTRUCT(StateStreamStaticState)
struct FTransformStaticState
{
    GENERATED_USTRUCT_BODY()
};
 
 
// Dynamic state for transform instance. Can be updated inside ticks
 
USTRUCT(StateStreamDynamicState)
struct FTransformDynamicState
{
    GENERATED_USTRUCT_BODY()
 
private: // Use accessors (SetX/GetX) instead of properties directly
 
    // Transform relative Parent
    UPROPERTY()
    FTransform LocalTransform = FTransform::Identity;
 
    UPROPERTY()
    TArray<FTransform> BoneTransforms;
 
    // Parent
    UPROPERTY()
    FTransformHandle Parent;
 
    //UPROPERTY()
    //uint8 LocationRule = 0;
 
    //UPROPERTY()
    //uint8 RotationRule = 0;
 
    //UPROPERTY()
    //uint8 ScaleRule = 0;
 
    UPROPERTY()
    bool bVisible = true;
};
 
 
// Transform state stream id used for registering dependencies and find statestream
 
inline constexpr uint32 TransformStateStreamId = 1;
 
 
// Interface for creating transform instances
 
class ITransformStateStream
{
public:
    DECLARE_STATESTREAM(Transform)
    virtual FTransformHandle Game_CreateInstance(const FTransformStaticState& Ss, const FTransformDynamicState& Ds) = 0;
};