SunsetHigh.Hero.PickpocketSystem.update C# (CSharp) Method

            public void update(Hero h, float elapsed)
            {
                //set initial positions
                arrow.setXCenter(h.getXCenter());
                arrow.setYCenter(h.getYCenter() + ARROW_Y_OFFSET);
                negativeBar.setXCenter(h.getXCenter());
                negativeBar.setYCenter(h.getYCenter() + BAR_Y_OFFSET);
                positiveBar.setXCenter(h.getXCenter());
                positiveBar.setYCenter(h.getYCenter() + BAR_Y_OFFSET);

                //update moving arrow
                //moves sinusoidally
                arrowTimer += elapsed;
                displacement = (int)(NEGATIVE_WIDTH / 2 * Math.Sin(arrowTimer * speedFactor + randomOffset));
                arrow.setX(arrow.getX() + displacement);
            }