UEaseComponent.h

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// Copyright (c) 2025 Doppleddiggong. All rights reserved. Unauthorized copying, modification, or distribution of this file, via any medium is strictly prohibited. Proprietary and confidential.
 
#pragma once
 
#include "CoreMinimal.h"
#include "FEaseHelper.h"
#include "Components/ActorComponent.h"
#include "UEaseComponent.generated.h"
 
USTRUCT(BlueprintType)
struct FEaseFloatTrack
{
    GENERATED_BODY()
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    EEaseType EaseType = EEaseType::Linear;
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    float Current = 0.f;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    float Start = 0.f;
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    float Target = 0.f;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    float Duration = 1.f;
    float ElapsedTime = 0.f;
 
    float GetAlpha() const
    {
        return FMath::Clamp(Duration > 0.f ? ElapsedTime / Duration : 1.f, 0.f, 1.f);
}
 
    void Update(float DeltaTime)
    {
        ElapsedTime += DeltaTime;
        float Alpha = FMath::Clamp(Duration > 0.f ? ElapsedTime / Duration : 1.f, 0.f, 1.f);
        Current = FMath::Lerp(Start, Target, FEaseHelper::Ease(Alpha, EaseType));
    }
};
 
USTRUCT(BlueprintType)
struct FEaseVectorTrack
{
    GENERATED_BODY()
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    EEaseType EaseType = EEaseType::Linear;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    FVector Current = FVector::ZeroVector;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    FVector Start = FVector::ZeroVector;
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    FVector Target = FVector::ZeroVector;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    float Duration = 1.f;
 
    float ElapsedTime = 0.f;
 
    float GetAlpha() const
    {
        return FMath::Clamp(Duration > 0.f ? ElapsedTime / Duration : 1.f, 0.f, 1.f);
    }
 
    void Update(float DeltaTime)
    {
        ElapsedTime += DeltaTime;
        float Alpha = FMath::Clamp(Duration > 0.f ? ElapsedTime / Duration : 1.f, 0.f, 1.f);
        Current = FMath::Lerp(Start, Target, FEaseHelper::Ease(Alpha, EaseType));
    }
};
 
USTRUCT(BlueprintType)
struct FEaseRotatorTrack
{
    GENERATED_BODY()
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    EEaseType EaseType = EEaseType::Linear;
    
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    FRotator Current = FRotator::ZeroRotator;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    FRotator Start =  FRotator::ZeroRotator;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    FRotator Target = FRotator::ZeroRotator;
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite)
    float Duration = 1.f;
 
    float ElapsedTime = 0.f;
 
    float GetAlpha() const
    {
        return FMath::Clamp(Duration > 0.f ? ElapsedTime / Duration : 1.f, 0.f, 1.f);
    }
 
    void Update(float DeltaTime)
    {
        ElapsedTime += DeltaTime;
        float Alpha = FMath::Clamp(Duration > 0.f ? ElapsedTime / Duration : 1.f, 0.f, 1.f);
        Current = FMath::Lerp(Start, Target, FEaseHelper::Ease(Alpha, EaseType));
    }
};
 
 
UCLASS( ClassGroup=(CoffeeLibrary), meta=(BlueprintSpawnableComponent, DisplayName="EaseComponent") )
class COFFEELIBRARY_API UEaseComponent : public UActorComponent
{
    GENERATED_BODY()
public:
    UEaseComponent();
 
public:
    virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;
    void UpdateTrack(float DeltaTime);
 
    UFUNCTION(BlueprintPure, Category="Track")
    float GetTrackAlpha(FName TrankName) const;
 
    UFUNCTION(BlueprintPure, Category="Track")
    float GetEaseFloatTrack(FName TrackName);
    UFUNCTION(BlueprintCallable, Category="Track")
    void SetEaseFloatTrack(FName TrackName, EEaseType EaseType, float Start, float Target, float Duration = 1.f);
 
    UFUNCTION(BlueprintPure, Category="Track")
    FVector GetEaseVectorTrack(FName TrackName);
    UFUNCTION(BlueprintCallable, Category="Track")
    void SetEaseVectorTrack(FName TrackName, EEaseType EaseType, FVector Start, FVector Target, float Duration = 1.f);
 
    UFUNCTION(BlueprintPure, Category="Track")
    FRotator GetEaseRotatorTrack(FName TrackName);
    UFUNCTION(BlueprintCallable, Category="Track")
    void SetEaseRotatorTrack(FName TrackName, EEaseType EaseType, FRotator Start, FRotator Target, float Duration = 1.f);
    
private:
    TMap<FName, FEaseFloatTrack> FloatTracks;
    TMap<FName, FEaseVectorTrack> VectorTracks;
    TMap<FName, FEaseRotatorTrack> RotatorTracks;
};