experiments-monogame/UPWG/Elite/Scene.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

namespace Elite
{
    public class Scene
    {
        public static int DefaultHeight = 800;
        public static int DefaultWidth = 600;
        public readonly int Width;
        public readonly int Height;
        public float Scale;

        private SpriteBatch _batch;
        private RenderTarget2D _target;

        public Scene(int width, int height)
        {
            Width = width;
            Height = height;
            _batch = new SpriteBatch(Engine.Instance.GraphicsDevice);
            _target = new RenderTarget2D(Engine.Instance.GraphicsDevice, Width, Height);
        }

        public Scene() : this(DefaultWidth, DefaultHeight)
        {
        }

        public virtual void Draw(float elapsed)
        {
            Engine.Instance.GraphicsDevice.SetRenderTarget(_target);
            Engine.Instance.GraphicsDevice.Clear(Color.SeaGreen);

            /*
            SpriteBatch.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend);

            foreach (var drawable in DrawList)
            {
                drawable.Draw(SpriteBatch);
            }

            SpriteBatch.End();
            _graphicsDevice.SetRenderTarget(null);

            SpriteBatch.Begin(SpriteSortMode.Texture, BlendState.AlphaBlend, SamplerState.PointClamp, null, null);
            SpriteBatch.Draw(_target, Vector2.Zero, null, Color.LightBlue, 0.0f, Vector2.Zero, _scale,
                SpriteEffects.None,
                0.0f);
            SpriteBatch.End();*/
        }

        public virtual void Update(float elapsed)
        {
        }
    }
}