ProjectDDD/Packages/SLUnity/SLUI/SLUIPosition.cs

using UnityEngine;

namespace Superlazy.UI
{
    public class SLUIPosition : SLUIComponent
    {
        public string bind = "Position";
        public string rotationBind;
        public bool billboard = false;
        public bool world = true;
        public float cameraDist = 0;

        private Transform t;
        private Vector3 position;

        protected override void Validate()
        {
            t = GetComponent<Transform>();
        }

        protected override void Init()
        {
        }

        protected override void Enable()
        {
            SLGame.AddNotify(bindParent.BindPath.CombinePath(bind), OnChange);

            if (string.IsNullOrEmpty(rotationBind) == false)
            {
                SLGame.AddNotify(bindParent.BindPath.CombinePath(rotationBind), OnChange);
            }
        }

        protected override void Disable()
        {
            SLGame.RemoveNotify(bindParent.BindPath.CombinePath(bind), OnChange);

            if (string.IsNullOrEmpty(rotationBind) == false)
            {
                SLGame.RemoveNotify(bindParent.BindPath.CombinePath(rotationBind), OnChange);
            }
        }

        private void OnChange()
        {
            if (bindParent.Active == false) return;

            position = SLGame.SessionGet(bindParent.BindPath).Get(bind).ToVector3();
            if (world)
            {
                t.position = position;
            }
            else
            {
                t.localPosition = position;
            }

            if (string.IsNullOrEmpty(rotationBind) == false)
            {
                if (world)
                {
                    t.rotation = Quaternion.Euler(new Vector3(0, 0, SLGame.SessionGet(bindParent.BindPath).Get(rotationBind)));
                }
                else
                {
                    t.localRotation = Quaternion.Euler(new Vector3(0, 0, SLGame.SessionGet(bindParent.BindPath).Get(rotationBind)));
                }
            }
        }

        private void Update() // TODO: 여전히 한프레임 밀리지만 먼저꺼가 너무 못생겼다. 시간없으니 다음에
        {
            if (cameraDist > 0.01)
            {
                t.position = SLGame.Camera.transform.position + (position - SLGame.Camera.transform.position).normalized * cameraDist;
            }
        }

        private void LateUpdate()
        {
            if (billboard)
            {
                t.forward = SLGame.Camera.transform.forward;
            }
        }
    }
}