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

/// <summary>
/// 召唤伊斯兰事件,从伊斯兰隔间演出调用OnCall
/// </summary>
public class CallYiSiLan : Event
{
    /// <summary>
    /// 召唤的伊斯兰的数量
    /// </summary>
    [Header("召唤的伊斯兰的数量")]
    public int count;

    /// <summary>
    /// 伊斯兰预制体
    /// </summary>
    [Header("伊斯兰预制体")]
    public GameObject yiSiLan;
    /// <summary>
    /// 伊斯兰的召唤x范围广度
    /// </summary>
    [Header("伊斯兰的召唤x范围广度")]
    public float callRange;

    /// <summary>
    /// 召唤伊斯兰的位置
    /// </summary>
    [Header("召唤伊斯兰的位置")]
    private Transform callYiSiLanPosition;

    [Header("最短召唤时间间隔")]
    public float yiSiLanMinTime;
    [Header("最长召唤时间间隔")]
    public float yiSiLanMaxTime;
    public List<YiSiLan> yiSiLans;
    [Header("结束演出")]
    public Stage endStage;

    private void Init(){
        yiSiLans = new List<YiSiLan>();
        callYiSiLanPosition = GameObject.Find("伊斯兰召唤点").transform;
    }

    void Update(){
        if(yiSiLans.Count > 0){
            for(int i = 0; i < yiSiLans.Count; i ++){
                if(yiSiLans[i].state == Enemy.State.dead)
                    yiSiLans.Remove(yiSiLans[i]);
            }
        }
            
    }

    [ContextMenu("OnCall")]
    public override void OnCall(){
        Init();
        StartCoroutine(CallThem());
    }

    private IEnumerator CallThem(){
        for(int i = 0; i < count; i++){
            //实例化预制体
            YiSiLan yi = Instantiate(
                yiSiLan,
                callYiSiLanPosition.position + new Vector3(Random.Range(-callRange,callRange),0,0),
                Quaternion.identity
            ).GetComponent<YiSiLan>();
            yiSiLans.Add(yi);
            //等待范围内的随机时间
            yield return new WaitForSeconds(
                Random.Range(yiSiLanMinTime,yiSiLanMaxTime)
            );
        }
        //全部召唤完后,等待玩家打完
        yield return new WaitUntil(
            () => {
                return ((yiSiLans.Count == 0) ? true : false);
            }
        );
        //打完后等待一段反应时间
        yield return new WaitForSeconds(2f);
        //触发结束演出
        endStage.OnCall();
    }

}