In my game I want to stop shoot if you press right or left with space. disable space something like that .. my game is in my account you can try it
if (!Greenfoot.isKeyDown("left") &&
!Greenfoot.isKeyDown("right") &&
Greenfoot.isKeyDown("space"))boolean noCanFire = Greenfoot.isKeyDown("left") || Greenfoot.isKeyDown("right");
if (!noCanFire && Greenfoot.isKeyDown("space")) // fire shot