using System;
using System.Collections.Generic;
using UnityEngine;

namespace coa4u
{
    class ActionRotateBy : ActionInterval
    {
        protected Vector3 delta;

        public ActionRotateBy(Vector3 tgtDelta, float tgtDuration)
            : base(tgtDuration)
        {
            delta = tgtDelta;
        }

        public ActionRotateBy(float angle, float tgtDuration)
            : this(new Vector3(0, 0, angle), tgtDuration)
        {
            is2d = true;
        }

        public override ActionInstant clone()
        {
            return new ActionRotateBy(delta, duration);
        }

        public override ActionInstant reverse()
        {
            return new ActionRotateBy(delta * -1F, duration);
        }

        public override void stepInterval(float dt)
        {
            float d = dt / duration;
            Vector3 tgt = delta * d;
            transform.rotation = Quaternion.Euler(transform.rotation.eulerAngles + tgt);
        }
    }
}