using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using DG.Tweening;
public class CameraOrbit : MonoBehaviour
{
    public Transform target;
    public float distance = 5f;
    public float xSpeed = 120f;
    public float ySpeed = 120f;
    public float scrollSpeed = 1f;
    public float yMinLimit = -20f;
    public float yMaxLimit = 80f;
    public float distanceMin = 0.5f;
    public float distanceMax = 15f;
    public float smoothTime = 2f;
    public float rotationYAxis;
    public float rotationXAxis;
    public float velocityX;
    public float velocityY;
    private bool start = true;
    public static bool isMove = true;
    private Transform pos;//获取Empty的子物体pos
    private Vector3 offset;//获取初始时镜头相对于pos的偏移量
    private Transform mainCamera;
    public bool limit = true;
    private bool Enable = true;
    public static float ClampAngle(float angle, float min, float max)
    {
        if (angle < -360f)
        {
            angle += 360f;
        }
        if (angle > 360f)
        {
            angle -= 360f;
        }
        return Mathf.Clamp(angle, min, max);
    }

    private void LateUpdate()
    {

        if (Enable && this.target != null && isMove)
        {
            //FirstPersonController firstPersonController = GameObject.FindGameObjectWithTag("Player").GetComponent<FirstPersonController>();
            //firstPersonController.playerCanMove = Input.GetMouseButton(1);
            if (Input.GetMouseButton(1))
            {
                this.start = false;
                if (limit)
                {

                }
                else
                {
                    this.velocityX += (this.xSpeed * Input.GetAxis("Mouse X")) * 0.02f;
                    this.velocityY += (this.ySpeed * Input.GetAxis("Mouse Y")) * 0.02f;
                }
            }
            //if (!this.start)
            //{
            this.rotationYAxis += this.velocityX;
            this.rotationXAxis -= this.velocityY;
            this.rotationXAxis = ClampAngle(this.rotationXAxis, this.yMinLimit, this.yMaxLimit);
            Quaternion quaternion2 = Quaternion.Euler(this.rotationXAxis, this.rotationYAxis, 0f);
            Vector3 vector = new Vector3(0f, 0f, -this.distance);
            Vector3 vector2 = ((Vector3)(quaternion2 * vector)) + this.target.position;
            base.transform.rotation = quaternion2;
            base.transform.position = vector2;
            this.velocityX = Mathf.Lerp(this.velocityX, 0f, Time.deltaTime * this.smoothTime);
            this.velocityY = Mathf.Lerp(this.velocityY, 0f, Time.deltaTime * this.smoothTime);

            float axis = 0;
            if (limit)
            { }
            else
            {
                axis = Input.GetAxis("Mouse ScrollWheel");
            }
            if ((axis < 0f) && (this.distance < this.distanceMax))
            {
                this.distance += this.scrollSpeed;
            }
            else if ((axis > 0f) && (this.distance > this.distanceMin))
            {
                this.distance -= this.scrollSpeed;
            }
        }
    }

    public void Resume()
    {
        Enable = false;



        transform.DOLocalMove(initPos, 1).OnComplete(() =>
        {
            Vector3 eulerAngles = base.transform.eulerAngles;
            this.rotationYAxis = eulerAngles.y;
            this.rotationXAxis = eulerAngles.x;
            velocityX = 0;
            distance = initDis;
            velocityY = 0;
            Enable = true;
        });
        transform.DOLocalRotate(initRot, 1);
    }
    public Vector3 initPos, initRot; float initDis;
    private void Start()
    {
        Vector3 eulerAngles = base.transform.eulerAngles;
        this.rotationYAxis = eulerAngles.y;
        this.rotationXAxis = eulerAngles.x;
        //SliderValue(this.distance);

        StartCoroutine(Delay());
    }
    IEnumerator Delay()
    {
        yield return 1;
        initDis = this.distance;
        initPos = transform.localPosition;
        initRot = transform.localEulerAngles;
    }
    public bool InScene()
    {
        bool inscene = false;
        if (Input.mousePosition.x > 0 && Input.mousePosition.x < Screen.width && Input.mousePosition.y > 0 && Input.mousePosition.y < Screen.height)
            inscene = true;
        else
            inscene = false;
        return inscene;
    }

    /// <summary>
    /// 相机穿墙
    /// </summary>
    private void AvoidCrossWall()
    {
        RaycastHit hit;
        if (Physics.Raycast(pos.position, mainCamera.position - pos.position, out hit, offset.magnitude))
        {
            Debug.DrawLine(pos.position, hit.point);
            if (hit.collider.tag == "Wall")
            {
                mainCamera.position = hit.point;
            }
        }
    }
}