using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using DG.Tweening;
using UnityEngine.UIElements;

public class CameraController : MonoBehaviour
{
    public static CameraController instance;
    /// <summary>
    /// 禁止操作
    /// </summary>
    //[HideInInspector]
    public bool ShieldingOperation;

    protected Quaternion myLocalAng;
    protected Vector3 myPos;

    /// <summary>
    /// 定位目标
    /// </summary>
    protected Transform Target;
    /// <summary>
    /// 默认定位距离
    /// </summary>
    protected float distance = 200;
    public float Distance => distance;

    public float eulerx;
    public float eulery;
    public float horizontal;
    public float vertical;

    public Vector2 XLimit = new Vector2(-500, 500);
    public Vector2 YLimit = new Vector2(5, 500);
    public Vector2 ZLimit = new Vector2(-500, 500);
    protected virtual void Awake()
    {
        instance = this;
    }

    protected virtual void Start()
    {

    }

    protected virtual void Update()
    {
        //if (Target != null)
        //    Distance = Vector3.Distance(Target.position, transform.position);
    }

    protected void InitTransform()
    {
        //ShieldingOperation = true;
        myLocalAng = transform.rotation;
        horizontal = eulerx = myLocalAng.eulerAngles.y;
        vertical = eulery = myLocalAng.eulerAngles.x;
        if (vertical > 180)
            vertical -= 360;
        myPos = transform.position;
    }

    /// <summary>
    /// 设置相机位置
    /// 开启自动漫游时设置
    /// </summary>
    /// <param name="position"></param>
    /// <param name="angle"></param>
    public void SetTransform(Vector3 position,Vector3 angle)
    {
        Target = null;
        transform.position = position;
        transform.eulerAngles = angle;
        InitTransform();
    }

    /// <summary>
    /// 设置坐标及角度
    /// </summary>
    /// <param name="_position"></param>
    /// <param name="_rotation"></param>
    public void SetTransform(Vector3 _position,Quaternion _rotation)
    {
        Target = null;
        transform.position = _position;
        transform.rotation = _rotation;
        InitTransform();
    }

    /// <summary>
    /// 定位至目标
    /// </summary>
    /// <param name="target"></param>
    public void LocateToTarget(Transform target)
    {
        if (target == null) return;
        Target = target;
        ShieldingOperation = true;

        transform.DOMove((transform.rotation * Vector3.back * Distance + Target.position), 0.5f).OnComplete(() =>
        { 
            myPos = transform.position;
            ShieldingOperation = false;
        });
    }
}