using System.Collections;
using System.Collections.Generic;
using UnityEngine;
/* 记录器-保存和记录树的区域 */
public class TreeAreaRecorder : MonoBehaviour
{   
    bool inited = false;
    public TreeAreaRecorder InitAndGet() {
        if (inited) return this;
        areaInfos = new AreaInfo[this.transform.childCount];
        int i = 0;
        foreach (Transform child in this.transform)
        {
            //顺便记录子物体关键信息
            AreaInfo areaInfo = new AreaInfo();
            areaInfo.transform = child.transform;
            areaInfo.position = areaInfo.transform.position;
            Vector3 lossyScale = child.transform.lossyScale;
            areaInfo.radius = Mathf.Max(Mathf.Abs(lossyScale.x), Mathf.Abs(lossyScale.z)) / 2;
            areaInfo.height = lossyScale.y / 2;
            areaInfos[i] = areaInfo;
            i++;
        }
        return this;
    }

    public class AreaInfo {
        public Transform transform;
        public Vector3 position;
        public float radius;
        public float height;
        public float teamCompareValue;
        public float distanceInHorizontal(Vector3 pos) {
            return Mathf.Sqrt(Mathf.Pow(position.x - pos.x, 2) + Mathf.Pow(position.z - pos.z, 2));
        }
        public object occupy; //被占用（例如鸟着落）
    }

    private AreaInfo[] areaInfos;
    public int areaInfoLen {
        get {
            return areaInfos.Length;
        }
    }

    public AreaInfo getValidAreaInfo(int childIndex) 
    {
        return areaInfos[childIndex];
    }

    public AreaInfo[] copyAreaInfos(int len) {
        AreaInfo[] list = new AreaInfo[len];
        System.Array.Copy(areaInfos, list, len);
        return list;
    }

    public AreaInfo[] getAreaInfos() {
        return areaInfos;
    }
}