Unless you are programmatically calling this 'act' method, the error is not in this part of your code. What is the full error message? The first line that contains a method that you wrote (or that you can edit) is the line in your code the error occurred. The last number in that line is the line number in the class that it occurred.

Heres the error java.lang.IllegalStateException: Actor not in world. An attempt was made to use the actor's location while it is not in the world. Either it has not yet been inserted, or it has been removed. at greenfoot.Actor.failIfNotInWorld(Actor.java:663) at greenfoot.Actor.getX(Actor.java:157) at Boss1Parts.act(Boss1Parts.java:24) at Boss1Parts.<init>(Boss1Parts.java:20) at doodleLVL3Boss.Boss(doodleLVL3Boss.java:29) at doodleLVL3Boss.<init>(doodleLVL3Boss.java:22) at doodleLVL3Boss.<init>(doodleLVL3Boss.java:13) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at greenfoot.core.Simulation.newInstance(Simulation.java:578) at greenfoot.platforms.ide.WorldHandlerDelegateIDE$3.run(WorldHandlerDelegateIDE.java:408) at greenfoot.core.Simulation.runQueuedTasks(Simulation.java:465) at greenfoot.core.Simulation.maybePause(Simulation.java:279) at greenfoot.core.Simulation.runContent(Simulation.java:210) at greenfoot.core.Simulation.run(Simulation.java:203)

The error is occurring in your 'Boss1Parts' class in the 'act' method while using 'getX' on line 24 of the class. Please copy/paste the first 30 or so lines of that class. The top-most recognizable line for your scenario is: at Boss1Parts.act(Boss1Parts.java:24)

Sure thing, public class Boss1Parts extends Actor { /** * Act - do whatever the Boss1Parts wants to do. This method is called whenever * the 'Act' or 'Run' button gets pressed in the environment. */ private int delaytime = 150; public Boss1Parts() { GreenfootImage image = getImage(); image.scale(image.getWidth() - 1100, image.getHeight()-1100); act(); } public void act() { if(getX() == 1) { setRotation(0); } if(getX() == getWorld().getWidth()-1) { setRotation(180); } if(Greenfoot.getRandomNumber(10)%7==0) { if(delaytime==0) { delaytime=150; getWorld().addObject(new BadLaser(), getX(), getY()); } delaytime--; } } }