I have no luck changing images when using the Greenfoot version of the AP Computer Science GridWorld case study. I've coded setImage() in a constructor and in the act() method to no avail. Is there a simple fix? I know GridWorld sets the image in a special predetermined way: i.e., the class name followed by jpg or gif, and I think this is rendering the setImage() method useless. I'll try messing with the code some more and see if I can figure out an easy fix. Does anyone have any experience on the matter?