Indeed that is pretty standard code... that also makes it quite odd that it's throwing an ArrayIndexOutOfBoundsException. I wonder if the height and width being passed in is inverted some where? I know I've done that a couple times in my own code. On Mon, Apr 2, 2018 at 3:39 PM, Stewart Aitken < [log in to unmask]> wrote: > The 32 is thee code fault indicated and the controller is shown below. > Pretty much standard, I think. > > > public static void main(String[] args) { > SimEnviro2WithUI sim = new SimEnviro2WithUI(); > Console c = new Console(sim); > 32 c.setVisible(true); > > } > > public void init(Controller c) { > super.init(c); > display = new Display2D(450.0D, 400.0D, this); > displayFrame = display.createFrame(); > c.registerFrame(displayFrame); > displayFrame.setVisible(true); > portrayal = new ObjectGridPortrayal2D() { > public Portrayal getDefaultPortrayal() { > return new OvalPortrayal2D(Color.red, > 1.0D) { > public void draw(Object object, > Graphics2D graphics, DrawInfo2D info) { > if(object != null) { > super.draw(object, > graphics, info); > } > > } > }; > } > }; > > display.attach(this.portrayal, "von Neumann single > offspring portrayal"); > display.setBackdrop(Color.white); > } >