Smoll/Expansion3/InertiaComponent.cs

using System.Numerics;

namespace Smoll.Ex3
{
    sealed class InertiaComponent : Component
    {
        public Transform2D transform;
        public float dampening;
        private Transform2DComponent? ownerTransform;

        public InertiaComponent(float dampening = 1)
        : this(dampening, 0, 0, 0)
        { }

        public InertiaComponent(float dampening, float x, float y)
        : this(dampening, x, y, 0)
        { }

        public InertiaComponent(float dampening, float x, float y, float angle)
        {
            transform = new Transform2D();
            transform.position = y * Complex.ImaginaryOne + x;
            transform.angle = angle;
            transform.scale = 1;
            this.dampening = dampening;
        }

        public InertiaComponent(float dampening, Transform2D tr)
        {
            transform = tr;
            this.dampening = dampening;
        }


        public override void OnAttached()
        {
            ownerTransform = owner.GetComponent<Transform2DComponent>();
        }

        public override void Update(float deltaTimeSeconds)
        {
            ownerTransform ??= owner.GetComponent<Transform2DComponent>();
            ownerTransform ??= new Transform2DComponent();
            ownerTransform.transform.position += transform.position * deltaTimeSeconds;
            ownerTransform.transform.angle += transform.angle * deltaTimeSeconds;

            transform.position *= MathF.Pow(dampening, deltaTimeSeconds);
            transform.angle *= MathF.Pow(dampening, deltaTimeSeconds);

        }
    }

}