BUT, these codes won't appear until my new project is ready to be released. And I will not need to update all my other scenarios again to enable the codes.

I don't want to reveal too much, but user unique codes found in my other scenarios will unlock things in my new project. And it's in its final stages of development. =)

Am I the only one getting the exceptions when the scenario is running? : java.lang.IndexOutOfBoundsException: invalid hotSpot at sun.lwawt.macosx.CCustomCursor.<init>(CCustomCursor.java:83) at sun.lwawt.macosx.LWCToolkit.createCustomCursor(LWCToolkit.java:239) at FightWorld.changeMouseImage(FightWorld.java:68) at FightWorld.<init>(FightWorld.java:24) And the following repeated: Exception in thread "AWT-EventQueue-2" java.lang.NullPointerException at greenfoot.WorldVisitor.toCellFloor(WorldVisitor.java:86)

I've checked the code, and I don't see anything wrong. I can only imagine that happening if you some reason were disconnected from the UserInfo server or were not logged in.

There are a few scrolling "engines" I believe, but I always prefer building on whatever context I am coding. You can, but give attribution please.

My code is reliant on there being a Player (an Actor you are wanting to center on), and a type of Actors that should be scrolled (in my case I had them all of type GameObject). If you need more help, please start a new discussion with details of your game and code.