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

public class MonsterObject : MonoBehaviour
{
    //血量字体生成点
    public RectTransform damagePos;
    //血条长度
    public RectTransform imgDragHp;
    //血量文字
    public Text txtDragHp;

    //当前血量
    private int hp;
    private float hpWide = 240f;

    //怪物是否死亡
    public bool isDead = false;

    //记录上一次攻击的时间
    private float frontTime;
    
    //怪物数据
    private MonsterData monster;

    void Awake()
    {
        Time.timeScale = 1f;
        monster=GameDataMgr.Instance.monster;
        hp = monster.hp;
    }

    // Start is called before the first frame update
    void OnEnable()
    {
        EventCenter.Instance.AddEventListener<PlayerData>(E_EventType.E_Monster_Wound,Wound);
    }

    // Update is called once per frame
    void Update()
    {
        //检测什么时候停下来攻击
        if (isDead)
        {
            return;
        }
        //检测和目标点达到移动条件时 就攻击
        if (Time.time - frontTime >= monster.atkTime)
        {
            //记录这次攻击时的时间
            frontTime = Time.time;
            //玩家受到伤害
            EventCenter.Instance.EventTrigger<MonsterData>(E_EventType.E_Player_Wound, monster);
        }
    }

    //受伤
    public void Wound(PlayerData player)
    {
        if (isDead)
        {
            return;
        }
        //防御抵消伤害
        //减少血量
        hp = hp + monster.def - player.atk;
        //弹出减血量数字
        GameObject go = PoolMgr.Instance.GetObj("Object/DamageNum");
        go.transform.SetParent(damagePos, false);
        go.GetComponent<DamageNum>().UpdateTxtInfo((player.atk-monster.def).ToString());

        if (hp <= 0)
        {
            Dead();
            //对象失活
            this.gameObject.SetActive(false);
            return;
        }
        UpdateHp(hp);
    }
    //死亡
    public void Dead()
    {
        isDead = true;
        GameMgr.Instance.isStopAtk = false;
        //血条长度变为0
        UpdateHp(0);
        //弹出战斗胜利
        EventCenter.Instance.EventTrigger<string>(E_EventType.E_Pool_Register1,"战斗胜利");
        //玩家获得奖励
        GameDataMgr.Instance.player.stone += 9999;
    }

    private void UpdateHp(int hp)
    {
        imgDragHp.sizeDelta = new Vector2(hpWide * hp / monster.hp, imgDragHp.sizeDelta.y);
        txtDragHp.text = hp + "/" + monster.hp;
    }

    //重置面板上玩家的数据
    public void UpdatePanel()
    {
        imgDragHp.sizeDelta = new Vector2(hpWide, imgDragHp.sizeDelta.y);
        txtDragHp.text = monster.hp + "/" + monster.hp;
        hp = monster.hp;
    }
    void OnDestroy()
    {
        EventCenter.Instance.Claer(E_EventType.E_Monster_Wound);
    }
}