PongFE/PongFE/PongFEGame.cs

using Encompass;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using PongFE.Components;
using PongFE.Renderers;

namespace PongFE
{
    class PongFEGame : Game
    {
        GraphicsDeviceManager graphics;

        WorldBuilder WorldBuilder { get; } = new WorldBuilder();
        World World { get; set; }

        SpriteBatch SpriteBatch { get; set; }
        Texture2D WhitePixel { get; set; }
        RenderTarget2D PaddleTexture { get; set; }

        public PongFEGame()
        {
            graphics = new GraphicsDeviceManager(this);
            graphics.PreferredBackBufferWidth = 1280;
            graphics.PreferredBackBufferHeight = 720;
            graphics.PreferMultiSampling = true;
            Content.RootDirectory = "Content";

            Window.AllowUserResizing = true;
            IsMouseVisible = true;
        }

        protected override void LoadContent()
        {
            SpriteBatch = new SpriteBatch(GraphicsDevice);

            WhitePixel = new Texture2D(GraphicsDevice, 1, 1);
            WhitePixel.SetData(new Color[] { Color.White });

            PaddleTexture = new RenderTarget2D(GraphicsDevice, 20, 80);
            GraphicsDevice.SetRenderTarget(PaddleTexture);
            SpriteBatch.Begin();
            SpriteBatch.Draw(WhitePixel, new Rectangle(0, 0, 20, 80), Color.White);
            SpriteBatch.End();
            GraphicsDevice.SetRenderTarget(null);

            WorldBuilder.AddOrderedRenderer(new Texture2DRenderer(SpriteBatch));

            var paddle = WorldBuilder.CreateEntity();
            WorldBuilder.SetComponent(paddle, new PositionComponent(new MoonTools.Structs.Position2D(5, 5)));
            WorldBuilder.SetComponent(paddle, new Texture2DComponent(PaddleTexture, 0));

            World = WorldBuilder.Build();
        }

        protected override void UnloadContent()
        {
            base.UnloadContent();
        }

        protected override void Update(GameTime gameTime)
        {
            World.Update(gameTime.ElapsedGameTime.TotalSeconds);

            base.Update(gameTime);
        }

        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.Black);

            SpriteBatch.Begin(SpriteSortMode.Deferred, BlendState.NonPremultiplied);
            World.Draw();
            SpriteBatch.End();

            base.Draw(gameTime);
        }
    }
}