using System.Collections.Generic;
using UnityEngine;


namespace Golems
{
    public static class OutlineCollection
    {
        /// <summary>
        /// Collection of renderers to be drawn with outline process
        /// </summary>
        public readonly static List<Outline2> RendererBundles = new List<Outline2>();

        /// <summary>
        /// The number of objects rendered in OutlineScriptableRenderPass.
        /// This is reset in OutlineScriptableRenderPass.Execute() and incremented in
        /// DrawObjectsDefault().
        /// ComposeOutlinePass uses this in AddRenderPasses, if it's zero screen copy Blit is avoided.
        ///
        /// N.B This is a sketchy place to do this sort of thing, full acknowledged but it's quick, easy and works...
        /// </summary>
        public static int NumberOfObjectsRendered = 0;

        /// <summary>
        /// Adds collection of renderers to the Outline Collection
        /// </summary>
        /// <param name="rendererBundle">Renderers to be drawn with Outline process</param>
        public static void AddRenderer(Outline2 rendererBundle)
        {
            if (RendererBundles.Contains(rendererBundle))
            {
                return;
            }

            RendererBundles.Add(rendererBundle);
        }

        public static void RemoveRenderer(Outline2 rendererBundle)
        {
            RendererBundles.Remove(rendererBundle);
        }
    }
}