GameRoot.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using NeonVectorShooter.Entities;

namespace NeonVectorShooter;

public class GameRoot : Game
{
	private GraphicsDeviceManager _graphics;
	private SpriteBatch _spriteBatch;

	public static GameRoot Instance { get; private set; }
	public static Viewport Viewport => Instance.GraphicsDevice.Viewport;
	public static Vector2 ScreenSize => new Vector2(Viewport.Width, Viewport.Height);

	public GameRoot()
	{
		Instance = this;
		_graphics = new GraphicsDeviceManager(this);
		Content.RootDirectory = "Content";
		IsMouseVisible = true;
	}

	protected override void Initialize()
	{
		// TODO: Add your initialization logic here

		base.Initialize();
		EntityManager.Add(PlayerShip.Instance);
	}

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

		// TODO: use this.Content to load your game content here
		Art.Load(Content);
	}

	protected override void Update(GameTime gameTime)
	{
		if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed ||
		    Keyboard.GetState().IsKeyDown(Keys.Escape))
			Exit();

		Input.Update();

		// TODO: Add your update logic here

		base.Update(gameTime);
		EntityManager.Update();
	}

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

		// TODO: Add your drawing code here

		base.Draw(gameTime);
		GraphicsDevice.Clear(Color.Black);

		_spriteBatch.Begin(SpriteSortMode.Texture, BlendState.Additive);
		EntityManager.Draw(_spriteBatch);
		_spriteBatch.Draw(Art.Pointer, Input.MousePosition, Color.White);
		_spriteBatch.End();
	}
}