using System.Collections.Generic;
using UnityEngine;
using System;
using HoloToolkit.Unity;


public class NRSRManager : Singleton<NRSRManager> {

    public Renderer[] ObjectsInScene;
    public List<GameObject> FilterObjectsInScene = new List<GameObject>();
    //Used to trigger next object update
    public int TotalNumberOfObjects = 0;
    public int PreviousFrameObjectCount = 0;

    //just in case we need - these numbers added together should always = total number of objects
    public int numberofVisibleObjects;
    public int numberOfFilteredObjects;

    void FixedUpdate()
    {

        FindObjectsInScene(); //Likely expensive to do every frame, dynamic systems tend to come at a cost.

        TotalNumberOfObjects = ObjectsInScene.Length;


        if (TotalNumberOfObjects != PreviousFrameObjectCount)
        {
            FilterUnneededObjects();
            numberofVisibleObjects = FilterObjectsInScene.Count;

            foreach (GameObject go in FilterObjectsInScene)
            {
               //Todo later
            }

        }

        PreviousFrameObjectCount = ObjectsInScene.Length;

    }


    void FindObjectsInScene()
    {
        ObjectsInScene = null;
        ObjectsInScene = FindObjectsOfType<Renderer>();
    }

    void FilterUnneededObjects()
    {

        FilterObjectsInScene.Clear();
        numberOfFilteredObjects = 0;

        for (int i = 0; i < ObjectsInScene.Length; i++)
        {
            if (ObjectsInScene[i].gameObject.tag != "NRSRTools")
            {
                FilterObjectsInScene.Add(ObjectsInScene[i].gameObject);
            }
            else
            {

                numberOfFilteredObjects++;

            }
        }

    }


}