CameraMotionBlender.h

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// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/Object.h"
#include "CameraMotionBlender.generated.h"
 
 
UCLASS()
class CK_UE_API UCameraMotionBlender : public UObject
{
    GENERATED_BODY()
 
public:
    // 전환 시점에 호출 — 현재값을 From으로 캡쳐하고 n초 블렌딩 시작
    void BeginBlend(float PosDuration, float RotDuration, float FieldOfViewOffsetDuration, float TimeScaleDuration);
 
    FVector AdvancePosition(const FVector& Target, float RealDeltaTime);
    FVector AdvanceRotation(const FVector& Target, float RealDeltaTime);
    float AdvanceFieldOfViewOffset(float Target, float RealDeltaTime);
    float AdvanceTimeScale(float Target, float RealDeltaTime);
 
private:
    struct FVectorChannel
    {
    public:
        FVectorChannel() = default;
        FVectorChannel(FVector From, FVector Current, float Duration) : From(From), Current(Current), Duration(Duration) { }
 
    public:
        void Begin(float InDuration);
        FVector Advance(const FVector& Target, float DeltaTime);
 
    public:
        FVector From = FVector::ZeroVector;
        FVector Current = FVector::ZeroVector;
        float Elapsed = 0.0f;
        float Duration = 0.0f;
    };
 
    struct FFloatChannel
    {
    public:
        FFloatChannel() = default;
        FFloatChannel(float InFrom, float InCurrent, float InDuration) : From(InFrom), Current(InCurrent), Duration(InDuration) { }
 
    public:
        void Begin(float InDuration);
        float Advance(float Target, float DeltaTime);
 
    public:
        float From = 0.0f;
        float Current = 0.0f;
        float Elapsed = 0.0f;
        float Duration = 0.0f;
    };
 
private:
    FVectorChannel PositionChannel;
    FVectorChannel RotationChannel;
    FFloatChannel FieldOfViewOffsetChannel;
    FFloatChannel TimeScaleChannel = FFloatChannel(1.0f, 1.0f, 0.0f);
};