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

[RequireComponent(typeof(Renderer))]
public class CustomRenderer : MonoBehaviour
{
    public new Renderer renderer { get; private set; }

    void OnEnable()
    {
        renderer = GetComponent<Renderer>();

        CustomRendererRegistry.Instance.Register(this);
    }

    void OnDisable()
    {
        CustomRendererRegistry.Instance.Unregister(this);
    }

}

public class CustomRendererRegistry : Singleton<CustomRendererRegistry>
{
    private List<CustomRenderer> m_Renderers;
    public List<CustomRenderer> renderers
    {
        get
        {
            if (m_Renderers == null)
                m_Renderers = new List<CustomRenderer>();
            return m_Renderers;
        }
    }

    public void Register(CustomRenderer renderer)
    {
        if(!renderers.Contains(renderer))
        {
            renderers.Add(renderer);
        }
    }

    public void Unregister(CustomRenderer renderer)
    {
        renderers.Remove(renderer);
    }

}