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

/// <summary>
/// 看向摄像机
/// </summary>
public class LookTrans : MonoBehaviour
{
    public static LookTrans Instance;
    /// <summary>
    /// 主视角
    /// </summary>
    public Transform AimTrans;
    /// <summary>
    /// 需要看向摄像机的物体
    /// </summary>
    public Transform[] Trans;
    /// <summary>
    /// 
    /// </summary>
    Quaternion Qua;
    /// <summary>
    /// 旋转角度
    /// </summary>
    Vector3 RotV3 = Vector3.zero;

    void Awake()
    {
        Instance = this;
    }
    void Update()
    {
        for (int i = 0; i < Trans.Length; i++)
        {
            if (Trans[i] && Trans[i].gameObject)
            {
                if (Trans[i].gameObject.activeSelf)
                {
                    Trans[i].LookAt(AimTrans);
                    RotV3.y = Trans[i].rotation.eulerAngles.y;
                    Qua.eulerAngles = RotV3;
                    Trans[i].rotation = Qua;
                }
            }
        }
    }

    /// <summary>
    /// 添加需要看向摄像机的物体
    /// </summary>
    /// <param name="tran"></param>
    public void TransAddTransform(Transform tran)
    {
        Transform[] _Trans=new Transform[Trans.Length+1];
        for (int i = 0; i < Trans.Length; i++)
        {
            _Trans[i] = Trans[i];
        }
        _Trans[Trans.Length] = tran;
        Trans = _Trans;
    }
}