57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
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// Copyright 2019-Present LexLiu. All Rights Reserved.
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#pragma once
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#include "LTweener.h"
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#include "LTweenerVector2D.generated.h"
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UCLASS(NotBlueprintType)
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class LTWEEN_API ULTweenerVector2D :public ULTweener
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{
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GENERATED_BODY()
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public:
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float startFloat = 0.0f;//b
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float changeFloat = 1.0f;//c
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FVector2D startValue;
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FVector2D endValue;
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FLTweenVector2DGetterFunction getter;
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FLTweenVector2DSetterFunction setter;
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FVector2D originStartValue;
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void SetInitialValue(const FLTweenVector2DGetterFunction& newGetter, const FLTweenVector2DSetterFunction& newSetter, const FVector2D& newEndValue, float newDuration)
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{
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this->duration = newDuration;
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this->getter = newGetter;
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this->setter = newSetter;
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this->endValue = newEndValue;
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this->startFloat = 0.0f;
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this->changeFloat = 1.0f;
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}
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protected:
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virtual void OnStartGetValue() override
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{
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if (getter.IsBound())
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this->startValue = getter.Execute();
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this->originStartValue = this->startValue;
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}
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virtual void TweenAndApplyValue(float currentTime) override
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{
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float lerpValue = tweenFunc.Execute(changeFloat, startFloat, currentTime, duration);
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auto value = FMath::Lerp(startValue, endValue, lerpValue);
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setter.ExecuteIfBound(value);
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}
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virtual void SetValueForIncremental() override
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{
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auto diffValue = endValue - startValue;
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startValue = endValue;
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endValue += diffValue;
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}
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virtual void SetOriginValueForRestart() override
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{
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auto diffValue = endValue - startValue;
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startValue = originStartValue;
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endValue = originStartValue + diffValue;
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}
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};
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