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

public class Move : MonoBehaviour
{
    public Transform destination;
    public LineRenderer rotuLine;

    private NavMeshAgent player;
    private NavMeshPath navPath;
    private Vector3[] rotu;
    private Vector3 oldPos;
    private Vector3 targetPos;
    private bool state = true;
    // Start is called before the first frame update
    private List<GameObject> list_Lines;


    void Start()
    {
        player = transform.GetComponent<NavMeshAgent>();
        oldPos = player.transform.position;
        navPath = new NavMeshPath();
        targetPos = Vector3.zero;
        list_Lines = new List<GameObject>();
    }

    // 连接服务器

    // 发送自己基本信息

    // 接受服务器的信息

    // 根据传输的Json 进行操作

    // 物体不存在先创建， 物体已经有了 就更新基本信息

        // 接受到服务器端传输的路径终点 

        // 自行生成路线 

        // 将路线传回服务器端

    // Update is called once per frame
    void Update()
    {
        if(Input.GetKeyDown(KeyCode.K))
        {
            SetDestination(destination.position);

            #region old
            //player.SetDestination(destination.position);
            //player.speed = 0;
            //player.CalculatePath(destination.position, navPath);

            //if (navPath.corners.Length <= 2)
            //    Debug.LogError(" 路径获取不全");
            //else
            //{

            //    rotuLine.positionCount = navPath.corners.Length;
            //    rotuLine.SetPositions(navPath.corners);

            //    Debug.Log(navPath.corners.Length);
            //    for (int i = 0; i < navPath.corners.Length; i++)
            //    {
            //        Debug.Log(navPath.corners[i]);
            //        GameObject.Instantiate(destination.transform, navPath.corners[i] , destination.transform.rotation);
            //    }
            //}


            //rotu = player.path.corners;
            //rotuLine.positionCount = rotu.Length;
            //rotuLine.SetPositions(rotu); 
            #endregion

        }

        //if(targetPos!=Vector3.zero)
        //if (Vector3.Distance(targetPos, player.transform.position) > player.stoppingDistance)
        //    DrawLine(true);
        //else
        //    DrawLine(false);
       
    }

    public void SetDestination( Vector3 pos)
    {
        pos = new Vector3(pos.x, transform.position.y, pos.z);
        targetPos = pos;
        player.SetDestination(pos);

        // player.speed = 1;
        //player.CalculatePath(pos, navPath);

        //if (navPath.corners.Length < 2)
        //    Debug.LogError(" 路径获取不全");
        //else
        //{

        //    rotuLine.positionCount = navPath.corners.Length;
        //    rotuLine.SetPositions(navPath.corners);

        //    Debug.Log(navPath.corners.Length);
        //    //for (int i = 0; i < navPath.corners.Length; i++)
        //    //{
        //    //    Debug.Log(navPath.corners[i]);
        //    //    GameObject.Instantiate(destination.transform, navPath.corners[i], destination.transform.rotation);
        //    //}
        //}
        DrawLine();
    }

    private void DrawLine( bool state)
    {
        if(!state)
        {
            rotuLine.positionCount = 0;
            targetPos = Vector3.zero;
            return;
        }    

        player.CalculatePath(targetPos, navPath);
        if (navPath.corners.Length < 2)
            Debug.LogError(" 路径获取不全");
        else
        {
           
            rotuLine.positionCount = navPath.corners.Length;
            rotuLine.SetPositions(navPath.corners);

            Debug.Log(navPath.corners.Length);
            //for (int i = 0; i < navPath.corners.Length; i++)
            //{
            //    Debug.Log(navPath.corners[i]);
            //    GameObject.Instantiate(destination.transform, navPath.corners[i], destination.transform.rotation);
            //}
        }
    }

    private void DrawLine()
    {
      
        player.CalculatePath(targetPos, navPath);
        if (navPath.corners.Length < 2)
            Debug.LogError(" 路径获取不全");
        else
        {
            GameObject Line = GameObject.Instantiate(rotuLine.gameObject);

            LineRenderer line = Line.GetComponent<LineRenderer>();
            line.positionCount = navPath.corners.Length;
            line.SetPositions(navPath.corners);
            Line.SetActive(true);
            list_Lines.Add(Line);
            //rotuLine.positionCount = navPath.corners.Length;
            //rotuLine.SetPositions(navPath.corners);

            Debug.Log(navPath.corners.Length);
            //for (int i = 0; i < navPath.corners.Length; i++)
            //{
            //    Debug.Log(navPath.corners[i]);
            //    GameObject.Instantiate(destination.transform, navPath.corners[i], destination.transform.rotation);
            //}
        }
    }

    public void CloseAllLine()
    {
        for (int i = 0; i < list_Lines.Count; i++)
        {
            list_Lines[i].SetActive(false);
           
        }
        list_Lines.Clear();
        list_Lines = new List<GameObject>();
    }
}