/********************************************************************************
 *	文件名：	TeleportPoint.cs
 *	全路径：	\Script\Player\TeleportPoint.cs
 *	创建人：	李嘉
 *	创建时间：2013-10-25
 *
 *	功能说明：游戏传送点逻辑
 *	修改记录：
*********************************************************************************/

using Games.GlobeDefine;
using Games.Scene;
using GCGame.Table;
using UnityEngine;

namespace Games.LogicObj
{
    public class Obj_JumpPoint_Init_Data : ObjParent_Init_Data
    {
        public Tab_Jump jumpData;

        public override void CleanUp()
        {
            base.CleanUp();
            jumpData = null;
        }
    }

    public class Obj_JumpPoint : ObjParent
    {
        public Tab_Jump jumpData;
        private GameObject _rootObj;
        
        private TeleportDistanceModule _distanceModule;

        //缓存数据
        private Obj_MainPlayer _mainPlayer;

        public Obj_JumpPoint()
        {
            m_ObjType = GameDefine_Globe.OBJ_TYPE.OBJ_JUMPPOINT;
        }

        public override UIPathData HeadUiPath
        {
            get { return Obj_NPCHeadUI.pathData; }
        }

        public int GetJumpId()
        {
            return jumpData.JumpId;
        }

        public void LockDistanceCheck()
        {
            _distanceModule.RefreshTime();
        }

        public override bool Init(ObjParent_Init_Data initData)
        {
            var result = base.Init(initData);
            if (!result)
                return false;
            var jumpInitData = initData as Obj_JumpPoint_Init_Data;
            if (jumpInitData == null || jumpInitData.jumpData == null)
            {
                Destroy(gameObject);
                return false;
            }

            enabled = false;
            //gameObject.AddComponent<ShaderFix>();
            jumpData = jumpInitData.jumpData;
            gameObject.name = "JumpPoint_" + jumpData.JumpId;
            _distanceModule = new TeleportDistanceModule(m_ObjTransform, jumpData.RangeRadius);
            var finalJumpData = jumpData.GetFinialJumpData();
            // 如果是同场景跳跃，增加OffMeshLink以供寻路机使用
            var destination = ActiveScene.GetTerrainPosition(new Vector3(finalJumpData.EndPosX, 0f, finalJumpData.EndPosZ));
            CreateOffmeshLink(gameObject, destination);
            return true;
        }

        protected override void Awake()
        {
            base.Awake();
            _rootObj = transform.GetChild(0).gameObject;
        }

        protected void OnBecameVisible()
        {
            enabled = true;
            if (_rootObj)
                _rootObj.SetActive(true);
        }

        protected void OnBecameInvisible()
        {
            enabled = false;
            if (_rootObj)
                _rootObj.SetActive(false);
        }

        private void Update()
        {
            var mainPlayer = _distanceModule.UpdateDistance();
            // 仅允许主角主动行为触发
            // 变身状态不允许跳跃
            if (mainPlayer != null && !mainPlayer.IsFollowTeam && mainPlayer.ForceUseModel == null)
                mainPlayer.MainPlayerStartJumpWait(jumpData.JumpId);
        }

        private static UnityEngine.AI.OffMeshLink CreateOffmeshLink(GameObject gameObject, Vector3 endPoint)
        {
            // 如果是同场景跳跃，增加OffMeshLink以供寻路机使用
            var offMeshLink = gameObject.EnsureComponent<UnityEngine.AI.OffMeshLink>();
            offMeshLink.autoUpdatePositions = false;
            offMeshLink.biDirectional = false;
            // 优先使用传送点
            //offMeshLink.costOverride = 0f;
            offMeshLink.area = GameDefine_Globe.NavMeshLayer.jump;
            // 不知道Init和Awake哪个快，安全点还是用transform
            offMeshLink.startTransform = gameObject.transform;
            if (offMeshLink.endTransform == null)
                offMeshLink.endTransform = new GameObject(gameObject.name + "_EndPoint").transform;
            offMeshLink.endTransform.position = endPoint;
            offMeshLink.UpdatePositions();
            return offMeshLink;
        }
    }

    public class TeleportDistanceModule
    {
        // 同一个传送点3秒内只能用一次
        private readonly float _distanceSqr;
        private readonly Transform _root;
        private float _nextJumpTime;

        public TeleportDistanceModule(Transform root, float distance)
        {
            _distanceSqr = distance.ToSquare();
            _root = root;
        }

        public void RefreshTime()
        {
            // JumpWait解除后，玩家有反应时间来避开锁定
            _nextJumpTime = Time.unscaledTime + Obj_MainPlayer.MainPlayerJumpWait.maxWaitTime * 2f;
        }

        public Obj_MainPlayer UpdateDistance()
        {
            Obj_MainPlayer mainPlayer = null;
            if (Time.unscaledTime > _nextJumpTime)
            {
                mainPlayer = Singleton<ObjManager>.Instance.MainPlayer;
                if (mainPlayer != null)
                    // 死亡和变身不允许跳跃
                    if (mainPlayer.IsDie())
                        mainPlayer = null;
                    else if ((mainPlayer.Position - _root.position).RemoveY().sqrMagnitude < _distanceSqr &&
                             mainPlayer.MovementState == MoveState.Static)
                        RefreshTime();
                    else
                        mainPlayer = null;
            }

            return mainPlayer;
        }
    }
}