Ymmärrys

public class AssetsLoader {
    SpriteBatch batch;
    OrthographicCamera cam;
    Sprite sprite;

    //MAAILMAN LEVEYS 9 YKSIKKÖÄ
    final static float WORLD_WIDTH = 9;
    //MAAILMA KORKEUS 16 YKSIKKÖÄ
    final static float WORLD_HEIGHT = 16;

    Viewport viewport;
    TiledMap map;
    OrthogonalTiledMapRenderer mapRenderer;

    public AssetsLoader() {
        cam = new OrthographicCamera(WORLD_WIDTH, WORLD_HEIGHT);
        float aspectRatio = (float) Gdx.graphics.getWidth() / (float) Gdx.graphics.getHeight();

        sprite = new Sprite(new Texture("kuva.jpg"));
        sprite.setSize(9, 16);
        sprite.setPosition(0, 0);
        batch = new SpriteBatch();
        map = new TmxMapLoader().load("mappi.tmx");
        cam.setToOrtho(false, 9,16);

        mapRenderer = new OrthogonalTiledMapRenderer(map, 1f / 32);


        cam = new OrthographicCamera();

        viewport = new FitViewport(9, 16, cam);
        cam.position.set(WORLD_WIDTH / 2, WORLD_HEIGHT / 2, 0);
        viewport.apply();
        mapRenderer.setView(cam);
    }
}