//--------------------------------------------------------
//    [Author]:           第二世界
//    [  Date ]:           Thursday, October 26, 2017
//--------------------------------------------------------
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System;

namespace vnxbqy.UI
{

    public class DungeonItemCollectFlyObject : MonoBehaviour
    {
        [SerializeField] BezierMove m_BezierMove;

        Action endCallBack = null;

        public void Begin(Vector3 _from, Vector3 _to, Action _callBack)
        {
            var startPoint = _from.SetZ(0);
            var endPoint = _to;
            endCallBack = _callBack;

            var nl = Vector3.Normalize(endPoint - startPoint);
            var normal = new Vector3(-nl.y, nl.x, 0);
            var distance = Vector3.Distance(startPoint, endPoint);
            var pivot = startPoint + normal * UnityEngine.Random.Range(-distance, distance)*0.7f + nl * distance * 0.4f;
            m_BezierMove.Begin(startPoint, pivot, endPoint, OnReach);

            this.SetActive(true);
            this.transform.localPosition = startPoint;
        }

        public void Begin(Vector3 _from, Vector3 _to, float modulus, Action _callBack)
        {
            var startPoint = _from.SetZ(0);
            var endPoint = _to;
            endCallBack = _callBack;

            var nl = Vector3.Normalize(endPoint - startPoint);
            var normal = new Vector3(-nl.y, nl.x, 0);
            var distance = Vector3.Distance(startPoint, endPoint);
            var pivot = startPoint + normal * UnityEngine.Random.Range(-distance, distance) * modulus + nl * distance * 0.4f;
            m_BezierMove.Begin(startPoint, pivot, endPoint, OnReach);

            this.SetActive(true);
            this.transform.localPosition = startPoint;
        }

        private void OnReach()
        {
            if (endCallBack != null)
            {
                endCallBack();
                endCallBack = null;
            }

            DungeonItemCollectFlyObjectPool.Recycle(this.gameObject);
        }

    }


    public class DungeonItemCollectFlyObjectPool
    {

        static GameObjectPoolManager.GameObjectPool pool = null;

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

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

    }


}