Basic progress bar in LibGDX

    private void addProgressBar(Table t) {
        TextureRegion slider = new TextureRegion(new Texture("hud/slider.png"));
        TextureRegion knob = new TextureRegion(new Texture("hud/knob.png"));
        ProgressBar.ProgressBarStyle style = new ProgressBar.ProgressBarStyle(
                new TextureRegionDrawable(slider),
                new TextureRegionDrawable(knob));
        style.knobBefore = style.knob;

        pb = new ProgressBar(0, 100, 1, false, style);

        t.add(pb).expandX().fillX().pad(10);
    }