Discussions

In more recent versions of Greenfoot, we no longer use java.awt.Font and instead have our own greenfoot.Font class. Remove the line near the top that says "import java.awt.Font". Then change line 22 in the snippet to be new Font("Comic Sans MS", 32) without the Font.PLAIN part. That should get the code working.

Hi! The first rule of asking for help is "give details" :) Without knowing what you've tried and what happened when you did, no-one can help. The best I can say is that you can download Greenfoot from the "download" section of this website, and the installation instructions are linked from there as well.

Just move (cut and paste) lines 10 through 13 into an act method within the class.

HINT: You want to reverse directions when the actor is near the bottom (which you have) OR near the top (which you don't have).

nvm. I found a solution. but it was thanks to your advice, so thank you danpost!

You should check out the ask method of the Greenfoot class.

Haven't seen the problem. Sounds like the world class was not recompiled properly. Try creating a new world object manually (right-click the world subclass and select "new MyWorld()", or whatever your world is called).

You will find the text in the middle of the Panel class.

Ty my bro.

I really do not think you want to clone a rocket. There are no states that a rocket-created rocket would need from the rocket that created it (gunReloadTime is a constant all new rockets will get; reloadDelayCount is specific to each rocket; acceleration is variable and specific to each rocket; and as for shotsFired, I doubt you want what current value the rocket creating it has for the new rocket). Just create a new Rocket object using 'new Rocket()' instead of trying to clone one. The only thing you may have to do is match the rotation:

Note that the method is declared to return a Marble object.

If that is the whole code in your world class, then the first thing which is missing is the super call to create the world. Problem with the line in particular: The addObject method requires three parameters - an object and two ints. You have four parameters and the first one doesn't make any sense. Depending on how your Key class looks, the line could look like this: <Code Omitted>

@Jeph, I am quite sure there is a problem with this line: <Code Omitted>Also, not only will your loop add a rock at all location at one time, but the if condition will most probably be true for many act cycles in a row -- meaning rocks will be added in an abundance. Again, I urge that the adding of rocks dependent on the score be done in the MyWorld class act method. The "dying" of the world should be implemented there also. Without knowledge of the number of rocks initially in the world and if any are ever removed, it would be difficult to

Move line 12 to be line 35. At line 12, it is assigned a value only once (when the world is created). At line 35, it (as a new variable each time) will be assigned a (new) value each time you are creating a new BottomPipe object. Also, to get a number between 20 and 200, inclusive, use: <Code Omitted>

You got the 4th direction in; but, you still need to reset steps to zero when turning. There is also now a problem that getRotation returns a value between 0, inclusive, and 360, exclusive. It will never be -90, as your new condition compares it to.