using UnityEngine;
using System.Collections;
using DevelopEngine;
using System.Collections.Generic;
using AX.TrackRecord;

public class CengIDManager : SingletonMono<CengIDManager>
{
    /// <summary>
    /// 只维护了室内层的所有CengID。
    /// </summary>
    public Dictionary<float, List<BuildItem>> CengAttriDict = new Dictionary<float, List<BuildItem>>();

    public void AddItemToDict(GameObject obj)
    {
        BuildItem cengAttri = new BuildItem();
        cengAttri.floor = obj.GetComponent<CengID>().cengID;
        cengAttri.buildType = obj.GetComponent<CengID>().CengIDBuildType;
        /*//key值减小部分进行存储，确保后期查找时找到正确的CengID
        //Tips：查找CengID时是根据y值查找，找到第一个比当前y值高的层获取CengID。*/
        float y_key = obj.transform.position.y/* - 0.5f*/;
        AddItemToDict(y_key, cengAttri);
    }
    private void AddItemToDict(float y_key, BuildItem cengAttri)
    {
        if (CengAttriDict.ContainsKey(y_key))
        {
            CengAttriDict[y_key].Add(cengAttri);
        }
        else
        {
            CengAttriDict.Add(y_key, new List<BuildItem>() { cengAttri });
        }
        CengAttriDict.DictSort();
    }
    public int GetCengIDByY(float y, BuildType buildType)
    {
        var keys = CengAttriDict.Keys;
        if (keys.Count < 1)
        {
            return 0;
        }
        //获取当前寻路点对应的cengid有两种情况：
        //1. 找y值最接近的层，这种情况是在平层上寻路
        //2. 找第一个比当前y值大的key_y的前一个key_y，即为当前层
        var list_y = new List<float>();//第一种情况
        foreach (var key_y in keys)
        {
            var dis = Mathf.Abs(y - key_y);
            if (dis < 0.2f)
            {
                list_y.Add(key_y);
            }
        }

        if (list_y.Count > 0)//满足情况1，处理情况1
        {
            list_y.Sort();//升序排列

            foreach (var key_y in list_y)
            {
                if (ReturnCengIDByY(key_y, buildType) != 0)
                {
                    return ReturnCengIDByY(key_y, buildType);
                }
            }
        }
        else if (buildType != BuildType.None)//不满足情况1，尝试情况2
        {
            //float ceng_key = 0;
            //foreach (var key_y in keys)
            //{
            //    if (key_y - y > 0.2f)
            //    {
            //        break;
            //    }
            //    ceng_key = key_y;
            //}
            //if (ReturnCengIDByY(ceng_key, buildType) != 0)
            //{
            //    return ReturnCengIDByY(ceng_key, buildType);
            //}
        }
        return 0;
    }
    private int ReturnCengIDByY(float key_y, BuildType buildType)
    {
        var buildItemList = CengAttriDict[key_y];
        foreach (var item in buildItemList)
        {
            if (item.buildType == buildType)
            {
                return item.floor;
            }
        }
        return 0;
    }
}