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

public class Tracker : MonoBehaviour
{
    //public Transform trackedObject;
    //public float updateSpeed = 3;
    //public Vector2 trackingOffset;
    //public Vector3 offset;
    [SerializeField]
    private Transform target;

    [SerializeField]
    private Vector3 offsetPosition;

    [SerializeField]
    private Space offsetPositionSpace = Space.Self;

    [SerializeField]
    private bool lookAt = true;

    void Start()
    {
      
        float xpos = Random.Range(-3.0f, 5.0f);
        float ypos = Random.Range(3.0f, 5.0f);
        float zpos = Random.Range(-3.0f, 5.0f);
        
        Vector3 pos = transform.position; // get a copy

        pos.x = xpos;
        pos.y = ypos;
        pos.z = zpos;
        offsetPosition = pos;
    }

    private void LateUpdate()
    {
        Refresh();
    }

    public void Refresh()
    {
        if (target == null)
        {
            Debug.LogWarning("Missing target ref !", this);

            return;
        }

        // compute position
        if (offsetPositionSpace == Space.Self)
        {
            print("lol");
            transform.position = target.TransformPoint(offsetPosition);
        }
        else
        {
            print("else");
            transform.position = target.position + offsetPosition;
        }

        // compute rotation
        if (lookAt)
        {
            transform.LookAt(target);
        }
        else
        {
            transform.rotation = target.rotation;
        }
    }