Discussions

Look at my scenario and just copy the explosion code : http://www.greenfoot.org/scenarios/8371

A simple class for a scolling textbox might look like the following:

The problem with the code is what I have made bold: if("c".equals(Greenfoot.getKey())){ newBomb(); }else if ("x".equals(Greenfoot.getKey())){ newBullet(); } You are calling 'getKey' twice within the same act cycle. The second call will always return 'null'. So, what you need to do is save what is returned the first time in a local field and use its value for comparing. <Code Omitted>

Then you should set the location of the coins to the other edge of the world: <Code Omitted>

I will try to make some improvements. Thanks.

My blobfish? It might be, I don't know.

If you use the modulo operator (%) that will help. E.g. <Code Omitted>

You have to add an else part after your if statement. If this else part is executed you set everything back to normal: <Code Omitted>

I think the problem was your 'checkOut' method. Try this: <Code Omitted>

There is no correct code for what you have given above. First, you are using an Object in the class that is not recognizable to the class. Second, you are using a method on an Actor object that is supposed to be executed on a World object. Finally, you have one method inside of another, which you cannot do in Java coding.

How do you know? what will tell you that it registers or not?

You placed the code after a 'return' statement that will always execute. Therefore the snippet is actually unreachable where it is placed. The compiler was not expecting code there; hence, the error. Your 'scrollPosition' appears to change by one every act cycle. In fact, being 'scrollSpeed' is 'final' (never changes), you can change your act method to:

It what way does it not work? Are you getting an error message? if so, what does it say?

Here is the code for my world import greenfoot.*; // (World, Actor, GreenfootImage, Greenfoot and MouseInfo) import java.awt.Color; /** * * The square world. The square world has Gold Eggs that need to be collected * * @author * @version 1.0 */ public class SquareWorld extends World { // private static final int GAP = 12; private Counter counter; private HealthBar healthBar; private Paddle paddle; private Robot robot; /** * Constructor for objects of class SquareWorld. * */ public SquareWorld() {