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

public enum Npcstate
{
    idle,
    dead,
    run
}

public class RecuseNpc : MonoBehaviour
{


    private NavMeshAgent navMeshAgent;//navmesh组件

    public string npcId;

    public static RecuseNpc instance;

    public Button recusebtn;

    private bool statebool = false;

    private Animator anim;

    public Npcstate nstate = Npcstate.idle;

    private bool movebool = false;
    public Transform target;

    public Vector3 currentTarget;

    // 存目的地的list
    public List<Vector3> targetPoints = new List<Vector3>();




    private void Awake()
    {
        instance = this;
        //recusebtn = GameObject.Find("Canvas/Recuse").GetComponent<Button>();
        anim = this.GetComponent<Animator>();
        target = GameObject.Find("mubiao").GetComponent<Transform>();
        navMeshAgent = GetComponent<NavMeshAgent>();

        // 初始化 NavMeshAgent 的一些属性
        navMeshAgent.speed = 2f; // 设置速度
        navMeshAgent.acceleration = 8f; // 设置加速度
        navMeshAgent.angularSpeed = 120f; // 设置旋转速度
        navMeshAgent.stoppingDistance = 1f; // 设置停止的距离

    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.tag == "Player")
            recusebtn.gameObject.SetActive(true);
        if (statebool) return;
        // other.GetComponent<CharacterInturn>().cha = this.gameObject;
    }

    private void OnTriggerExit(Collider other)
    {
        recusebtn.gameObject.SetActive(false);
    }

    public void SetNPCInfo(string id)
    {
        npcId = id;
    }

    //npc状态
    public void Setnpcstate()
    {
        movebool = true;
        nstate = Npcstate.idle;
        recusebtn.gameObject.SetActive(false);
        Debug.Log(npcId + "被救");
    }

    //添加npc的目的地到list中
    public void SetNpcDes(Vector3 tar)
    {
        Debug.Log(tar+"目标路径点");

        target.position = tar;
        Debug.Log(target);
        NavMeshHit hit;
        if (!NavMesh.SamplePosition(tar, out hit, 1.0f, NavMesh.AllAreas))
        {
            Debug.LogError($"目标点 {target} 不在导航网格上");
        }
        else
        {
            tar = hit.position; // 将目标点调整到最近的导航网格位置
        }
        Debug.Log("进入奔跑++++++=");
        //targetPoints.Clear();
        targetPoints.Add(tar);
        

    }

    private void Update()
    {

        // 继续处理NPC的状态和动画
        switch (nstate)
        {
            case Npcstate.idle:
                SetAni(2);
                break;
            case Npcstate.run:
                movebool = true;
                Run(currentTarget);
                break;
            case Npcstate.dead:
                SetAni(0);
                break;
        }

        Debug.Log("++++++++++++++++++++++++++++" + targetPoints.Count);
        if (targetPoints.Count > 0 && currentTarget != null)
        {

            currentTarget = targetPoints[targetPoints.Count-1];
            nstate = Npcstate.run;
            movebool = true;

            float dis = Vector3.Distance(transform.position, currentTarget);

            // 停止条件
            if (movebool && dis <= 0.25f)
            {
                Debug.Log("到达目标点");
                nstate = Npcstate.idle;
                movebool = false;

                if (targetPoints.Count > 1)
                {
                    targetPoints = RemoveDes();
                }
                else
                {
                    targetPoints.Clear();
                }
            }
            else
            {

                return;
            }
        }
    }

    //移除第一个点
    public List<Vector3> RemoveDes()
    {
        List<Vector3> list = new List<Vector3>();

        for (int i = 1; i < targetPoints.Count; i++)
        {
            list.Add(targetPoints[i]);
        }

        return list;
    }


    public void Run(Vector3 target)
    {
        if (!navMeshAgent.enabled)
        {
            Debug.LogError("NavMeshAgent 未启用！");
            return;
        }

        if (navMeshAgent.isStopped)
        {
            navMeshAgent.isStopped = false; // 取消停止状态
        }

        Debug.Log("进入奔跑状态");
        if (movebool)
        {
            NavMeshPath path = new NavMeshPath();
            navMeshAgent.SetDestination(target);

            SetAni(1); // 设置奔跑动画
        }
    }


    public void SetAni(int x)
    {
        anim.SetInteger("state", x);
    }


}