If you must, you can determine the current world using the 'instanceof' keyword -- 'if (getWorld() instanceof LevelOne) ((LevelOne)getWorld()).getWantedObject().runWantedMethod(); else if ... next world class check.

You should perhaps explain a bit more what you really need, but one alternative is to maintain a reference to the other actor within the first actor itself (instead of in the world). Typically you might have the first actor create the second, and keep a reference to it in a variable.

I'm making a game where the main tile is a certain fruit and sometimes new fruits are released of the same type after an elapsed time. I have a fruit class and a random class. The fruits all have values based on their image file names. I reduced my number of levels to 4 for now and here is what I have for the new fruits to be released. Basically, the random tiles change into fruit tiles. Here is what I have, I already have variables to return the values and this compiles fine but then it won't even run. Davmac is the reference maintained the same way? I can't use the addobject command in the actor.

In the code you post, where is 'fruit' declared and initialised? Why do you call 'getType()' and ignore what it returns? Perhaps you meant to declare a local variable called 'fruit' and assign to it depending on the world type, something like: That's too vague. It's a variable, same as it would be in the world, so all the same rules apply, yes. You can use 'getWorld().addObject(...)' from an actor.