i set : public void act() { GreenfootImage image = getImage(); image.scale(image.getWidth() - 0, image.getHeight() - 0); setImage(image); } // rest of class to 0's as you can see and no more error but when you add a number like - 1 its give me the error listed above... also Actor "Blip" will not move with this code public void moveAndTurn() { move(4); if (Greenfoot.isKeyDown("a")) { turn (-3); } if (Greenfoot.isKeyDown("d")) { turn(3); } } i think that the code you gave me for resizing my actor is causing "Blip" not to move, but my second actor "RedBlip" moves with this code above but he doesnt have code you gave me to resize my actor coded in it's file. Thanks for all your help. Appreciate you helping me to understand the language a little better :P

The code I provided does not go in the 'act' method (anything you put in the 'act' method will be repeatedly executed). The constructor is only called once; when the object is created. My code will go in the constructor. Again you should have:

I was able to copy and paste the code provided and it worked perfectly. thank you! public ClassName() { GreenfootImage image = getImage(); image.scale(image.getWidth() - 10, image.getHeight() - 10); setImage(image); }

@smcgee, just to bring out a point: the code given does not resize the image proportionally; use something like the following to resize the original image proportionally: Also, it is not required to reset the image to the actor. The rescaling is done directly on the image currently set to the actor (it is not a different image; but a modified one).