Discussions

If your world object knew the actors image ( GreenfootImage myActorImage = new GreenfootImage("filename of actors image"); ) you could say addObject(new myActor(), 0+(myActorImage.getWidth()/2), 0+(myActorImage.getHeight()/2)); to make the actor be added in the top left corner, but this gets even more confusing. Just remember that the objects x,y coordinates are the center point of the image.

no nevermind i figured it out.

You cannot call getX() or getY() from the constructor of an object (public ()) Move the code that uses these calls into the act method and you should be good.

I can't manage to cause the same error. Probably your laptop has less RAM than mine. Try the things I suggested above.

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read this READ

And: you can access non-public methods / variables from another class if they are in the same "package", as long as they aren't declared private. This is a Java idiom which isn't really represented in Greenfoot; all your classes are in the same package. But you can't call non-public methods from a class in a different package. For instance, there are some methods in the Actor class which are not public and which you can't call. (They're not listed in the API documentation - because you are not meant to be able to call them). Using 'static' works if there is only one object you are in

Thanks, Davin. I'll take a look at it!

ok

One of my students found it on the Scenario menu. Dick Baldwin

Thanks Wagnerf and DonaldDuck. I'm slowly re-learning Java :)

Aha - makes sense now thanks. Now to get the rest of the game to work.....

There's a full list here: http://www.java-tips.org/java-se-tips/java.lang/character-escape-codes-in-java.html \n, \\ and \" are the ones you'll most commonly use.