using Engine.Core;

namespace Engine.Systems.Tween;

public static class TweenCircleExtensions
{
    private static readonly BoxedPool<Circle> boxedCirclePool = new(2);

    public static ITween TweenCircle(this Circle initialCircle, ITweenManager tweenManager, float duration, Circle targetCircle, System.Action<Circle> setMethod)
    {
        Boxed<Circle> boxedInitial = boxedCirclePool.Get(initialCircle);
        Boxed<Circle> boxedTarget = boxedCirclePool.Get(targetCircle);

        ITween tween = tweenManager.StartTween(duration,
            t => setMethod?.Invoke(
                new Circle(
                    boxedInitial.Value.Center.Lerp(boxedTarget.Value.Center, t),
                    boxedInitial.Value.Diameter.Lerp(boxedTarget.Value.Diameter, t)
                )
            )
        );

        tween.OnComplete(() =>
        {
            boxedCirclePool.Return(boxedInitial);
            boxedCirclePool.Return(boxedTarget);
        });

        return tween;
    }
}