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Thread: Java Code Help on Draw method

  1. #1
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    Default Java Code Help on Draw method

    I am trying to do the Pong Lab in Dr. Java from A+ Computer Science. I am finished doing everything, however, when I run the game the ball leaves a trail behind. I do not know how to get rid of it and any help would be greatly appreciated. As of right now this is my draw method for the ball. I am drawing the ball blue and the trail should be white as to cover it. The ball being drawn blue is in another method. I just need this to get rid of the ball's trail.
    public void moveAndDraw(Graphics window)
    {
    //draw a white ball at old ball location
    draw(window,Color.WHITE);

    draw(window,Color.WHITE);//draws over the old ball with whichever color you want
    //in case you want to have a trail

    setX(getX()+xSpeed);
    setY(getY()+ySpeed);

    //setY

    draw(window); //draws the ball at its new location
    }


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    Default Re: Java Code Help on Draw method

    Can you make a small, simple program that compiles, executes and show the problem.

    Are you calling the paint method's super to clear the old drawings?
    If you don't understand my answer, don't ignore it, ask a question.

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