using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;

namespace MyGames
{
  /// <summary>
  /// This is the main type for your game
  /// </summary>
  public class SpaceInvader : Game
  {
    private readonly GraphicsDeviceManager graphics_;
    private KeyboardState oldKeyboardState_;
    private KeyboardState newKeyboardState_;
    private SpriteBatch spriteBatch_;
    private Ship playerShip_;

    public SpaceInvader()
    {
      graphics_ = new GraphicsDeviceManager(this);
      Content.RootDirectory = "Content";
      // Set device frame rate to 60 fps.
      TargetElapsedTime = TimeSpan.FromSeconds(1 / 60.0);
      graphics_.PreferredBackBufferWidth = 480;
      graphics_.PreferredBackBufferHeight = 268;
    }

    protected override void Initialize()
    {
      playerShip_ = new Ship(new Vector2(Window.ClientBounds.Width / 2, Window.ClientBounds.Height - 150), new Vector2(10,10));
      base.Initialize();
    }

    protected override void LoadContent()
    {
      // Create a new SpriteBatch, which can be used to draw textures.
      spriteBatch_ = new SpriteBatch(GraphicsDevice);
      playerShip_.LoadContent(Content);
    }

    protected override void UnloadContent()
    {
      // TODO: Unload any non ContentManager content here
    }

    protected override void Update(GameTime gameTime)
    {
      newKeyboardState_ = Keyboard.GetState();
      // Allows the game to exit
      if (newKeyboardState_.IsKeyDown(Keys.Escape))
        Exit();

      // TODO: Add your update logic here
      playerShip_.Update(Window, newKeyboardState_, oldKeyboardState_);

      base.Update(gameTime);
    }

    protected override void Draw(GameTime gameTime)
    {
      if (oldKeyboardState_.IsKeyDown(Keys.F) && newKeyboardState_.IsKeyUp(Keys.F))
        graphics_.ToggleFullScreen();
      graphics_.GraphicsDevice.Clear(Color.CornflowerBlue);
      //set rendering back to the back buffer

      // Draw the sprite.
      spriteBatch_.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend);
      playerShip_.Draw(spriteBatch_);
      spriteBatch_.End();

      base.Draw(gameTime);
      oldKeyboardState_ = newKeyboardState_;
    }
  }
}

using (SpaceInvader game = new SpaceInvader())
 {
   game.Run();
 }

SpaceInvader game = new SpaceInvader();
game.Run();