public class GameScreen implements Screen {
   SlingshotSteve game;

   public void Menu(SlingshotSteve game){
       this.game = game;
   }

   OrthographicCamera camera;

   SpriteBatch batch;
   TextureRegion backgroundTexture;
   Texture texture;

   GameScreen(final SlingshotSteve gam) {
        this.game = gam;

    camera = new OrthographicCamera(800, 480);

    batch = new SpriteBatch();

    Texture texture = new Texture(Gdx.files.internal("background.jpg"));
    backgroundTexture = new TextureRegion(texture, 0, 0, 500, 500);

}

public void render(float delta) {
      Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

      camera.update();
      batch.setProjectionMatrix(camera.combined);

      batch.begin();
      batch.draw(backgroundTexture, 0, 0, SlingshotSteve.WIDTH, SlingshotSteve.HEIGHT);
      batch.end();

}

@Override
public void dispose() {
       batch.dispose();
       texture.dispose();

}