//--------------------------------------------------------
//    [Author]:           第二世界
//    [  Date ]:           Thursday, December 28, 2017
//--------------------------------------------------------
using UnityEngine;
using System.Collections;
using UnityEngine.UI;

namespace vnxbqy.UI
{

    public class HeadUpStorySign : HUDBehaviour
    {
        [SerializeField] float m_Duration = 1f;
        float endTime = 0f;

        public static void Display(Transform _target, Camera _camera)
        {
            var bubble = HeadUpStorySignPool.Require();
            bubble.transform.SetParentEx(WindowCenter.Instance.uiRoot.bossShowCanvas.transform, Vector3.zero, Vector3.zero, Vector3.one);
            bubble.SetActive(true);

            bubble.Show(_target, _camera);
        }

        public virtual void Show(Transform _target, Camera _camera)
        {
            base.target = _target;
            base.offset = Vector3.zero;
            base.camera = _camera;

            endTime = Time.time + m_Duration;
            this.SetActive(true);
            SyncPosition(true);
        }

        protected override void LateUpdate()
        {
            base.LateUpdate();

            if (Time.time > endTime)
            {
                HeadUpStorySignPool.Recycle(this.gameObject);
            }
        }

    }

    public class HeadUpStorySignPool
    {
        static GameObjectPoolManager.GameObjectPool pool = null;

        public static HeadUpStorySign Require()
        {
            if (pool == null)
            {
                var prefab = UILoader.LoadPrefab("HeadUpStorySign");
                if (prefab != null)
                {
                    pool = GameObjectPoolManager.Instance.RequestPool(prefab);
                }
            }

            if (pool != null)
            {
                var instance = pool.Request();
                return instance.GetComponent<HeadUpStorySign>();
            }
            else
            {
                return null;
            }
        }

        public static void Recycle(GameObject _gameObject)
        {
            if (pool != null)
            {
                pool.Release(_gameObject);
                _gameObject.transform.SetParent(null);
                _gameObject.SetActive(false);
            }
        }

        public static void Clear()
        {
            if (pool != null)
            {
                pool.Clear();
                pool = null;
            }
        }

    }

}