using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace XGame
{
    public class TerrainManager : MonoBehaviour
    {
        public static TerrainManager m_Instance = null;

        //string heightMap = "res/scene/ground/create/height01.png";
        //string mixMap = "res/scene/ground/create/mix03.png";//"res/scene/ground/create/mix01.tga";
        string[] baseMap = { "res/scene/ground/mat/Ground_005_T.png", "res/scene/ground/mat/Ground_007_T.png",
            "res/scene/ground/mat/Ground_G003_T.png", "res/scene/ground/mat/Ground_003_T.tga" };
        string[] normalMap = { "res/scene/ground/mat/Ground_005_M.tga", "res/scene/ground/mat/Ground_G001_M.tga",
            "res/scene/ground/mat/Ground_G003_M.tga", "res/scene/ground/mat/Ground_003_M.tga" };

        private TerrainObject m_TerrainObject;

        void Awake()
        {
            m_Instance = this;
            Debug.Log("TerrainManager Awake");
        }

        public static IEnumerator Init()
        {
            if(m_Instance == null)
                Debug.Log("TerrainManager m_Instance == null");
            yield return m_Instance.LocalInit();
        }

        private IEnumerator LocalInit()
        {
            m_TerrainObject = new TerrainObject();
            //yield return m_TerrainObject.CreateGroundObjectFromPic(0, 0, heightMap, mixMap, baseMap, normalMap, gameObject.transform);
            yield break;
        }

        //heightMap 高度图
        //mixMap 混合图
        //baseMap 基础地表纹理图列表 4-16张

        public static IEnumerator coCreateMap(string heightMap, string mixMap, string[] baseMap, Action<UnityEngine.Object[]> action)
        {
            List<UnityEngine.Object> result = new List<UnityEngine.Object>();
            yield return XResLoader.coLoadAllRes(new string[] { heightMap, mixMap }, typeof(GameObject), objs =>
            {
                if (objs == null || objs[0] == null)
                {
                    Debug.Log($"Load heightMap, mixMap Failed");
                }
                else
                {
                    result.Add(objs[0]);//heightMap
                    result.Add(objs[1]);//mixMap
                }
            });
            yield return XResLoader.coLoadAllRes(baseMap, typeof(GameObject), objs =>
            {
                if (objs == null || objs[0] == null)
                {
                    Debug.Log($"Load heightMap, mixMap Failed");
                }
                else
                {
                    for (int i = 0; i < objs.Length; ++i)
                    {
                        result.Add(objs[i]);//baseMap
                    }                    
                }
            });
            action(result.ToArray());
        }

        void LoadGround(float xpos, float zpos)
        {
        }
    }
}