Coin.java

public class Coin{

    float jumpValue, grav, magvalue;
    boolean jump = true;
    float coinPositionX, coinPositionY, directionX, directionY;

    Image coinImage;

    public Coin(float directionX, float jumpValue)
    {
        this.directionX = directionX;
        this.directionY = jumpValue;
        this.jumpValue = jumpValue;

        doInitializations();
    }

    public void doInitializations()
    {
        coinPositionX = 285;
        coinPositionY = 455;
        grav = 2f;
        magvalue = 1.8f;

        coinImage = Toolkit.getDefaultToolkit().createImage("coinBoxCoinKlein.png");
    }


    public void Update()
    {

        if (jump)
        {
            directionY = -directionY * 4;
            jump = false;
        }


        coinPositionY += directionY;
        coinPositionX += directionX;
        directionY += grav;
        if (coinPositionY >= 270)
        {
            grav = 1190f;
        }
        if (coinPositionY <= 270)
        {
            grav += 50f;
        }


        if (coinPositionY >= 400)
        {
            //change direction!
            coinPositionY = 400;
            directionY = -directionY / 40 * 25;
            if (directionY >= -80)
            {
                directionX = 0;
                directionY = 0;

            }
        }
    }


    public void Draw(Graphics g, ImageExample ie)
    {
        g.drawImage(coinImage, (int)coinPositionY, (int)coinPositionX, ie);

    }

}