// Scenario in which a win becomes true
if(ballFollower.overlapping(hole, true))
    {
        win = true;
        ballFollower.remove();
        ball.remove();
        currentLevel += 1;
        previousLevel = currentLevel - 1;
        Action fadeIn = Actions.sequence(Actions.alpha(0), Actions.show(), Actions.fadeIn(2),
                Actions.forever(Actions.sequence(Actions.color(new Color(1, 0, 0, 1), 1),
                        Actions.color(new Color(0, 0, 1, 1), 1))));
        winText.addAction(fadeIn);
        System.out.println(currentLevel);
    }

// If won, give an option to move onto the next level.
    if(win)
    {
        nextLevelLabel.setVisible(true);
        if(Gdx.input.isKeyPressed(Keys.ENTER))
        {
            // currentLevel increments by 1 once the level is won.
            game.setScreen(new ElevatorLevel(game, currentLevel));
        }
    }

private int previousLevel = 0;
private int currentLevel = 1;
public ElevatorLevel(Game g, int level)
{
    super(g, level);
    currentLevel = level;
}