using System.Collections;

using UnityEngine;
using Thousandto.Core.Base;
using Thousandto.Code.Center;
using Thousandto.Core.Support;
using Thousandto.Core.Asset;
using EventManager = UnityEngine.Gonbest.MagicCube.EventManager;
using EventSystemHandler = UnityEngine.Gonbest.MagicCube.EventSystemHandler;
using EventMessage = UnityEngine.Gonbest.MagicCube.EventMessage;
using EventConstDefine = UnityEngine.Gonbest.MagicCube.EventConstDefine;
using PreLoadEventDefine = UnityEngine.Gonbest.MagicCube.PreLoadEventDefine;

namespace Thousandto.Code.Logic
{
    /// <summary>
    /// 预加载状态
    /// </summary>
    public class PreLoadState : GameStateBase
    {
        #region//私有变量
        float m_delay = 0;
        bool _waiting = false;

        //等2秒
        float _waitTime = 2.0f;

        private bool _startLoadRes = false;

        #endregion

        #region//构造函数
        public PreLoadState(GameStateId id) : base(id)
        {
            
        }
        #endregion

        #region//重写父类GameStateBase的函数
        protected override GameStateId OnGetStateID()
        {
            return GameStateId.PreLoad;
        }


        protected override void OnEnter()
        {
            EventManager.SharedInstance.PushFixEvent(PreLoadEventDefine.EID_STEP_START, 3);
            ResourcesEx.IsPreLoadState = true;
            _startLoadRes = false;
            ShaderManager.SharedInstance.DestoryShaderFactory();
            ShaderManager.SharedInstance.CreateShaderFactory();
        }

        protected override void OnLeave()
        {
            ResourcesEx.IsPreLoadState = false;
        }
        
        protected override bool OnUpdate(float deltaTime)
        {
            if (!_startLoadRes)
            {
                if (ShaderManager.SharedInstance.CheckReadyOK())
                {
                    //Debug.Log("Shader包加载完毕");
                    _startLoadRes = true;
                    //启动预加载
                    GameCenter.PreloadAssetsSystem.StartLoad();
                    //这个时候Shader才加载完毕,防止shader加载失败,对所有的后处理脚本进行初始化处理
                    InitPostEffectScript();
                }
            }
            return true;
        }

        /// <summary>
        ///  对所有的后处理脚本进行初始化处理
        /// </summary>
        private void InitPostEffectScript()
        {
            for (int i = 0; i < Camera.allCamerasCount; i++)
            {
                var c = Camera.allCameras[i];
                if (c != null && c.gameObject != null && c.enabled)
                {
                    c.gameObject.SendMessage("OnPostEffectInit", SendMessageOptions.DontRequireReceiver);
                }
            }
        }
        #endregion
    }
}