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Split an long in the seperat numbers

By Mepp, with 5 replies.
Last reply by danpost, almost 13 years ago:

As an alternative, the following will do the job: <Code Omitted>BTW, this will work for any non-negative whole numbers (0, 1, 2, ...).

Making an object bigger

By Gingervitis, with 5 replies.
Last reply by Gingervitis, almost 13 years ago:

Thank you very much for the help.

how objects move at world edges?

By dion.williams, with 4 replies.
Last reply by dion.williams, almost 13 years ago:

thank you very much Jonas234 its now working.

Doing 'real' hit testing on circles

By mattrayner, with 8 replies.
Last reply by mattrayner, almost 13 years ago:

In that case, I need to change it :P

Greenfoot chapter 5 add text

By Tim1234, with 6 replies.
Last reply by Tim1234, almost 13 years ago:

It's working now. Thanks.

DoctorProfessorYoshi

counter class

By DoctorProfessorYoshi, with 6 replies.
Last reply by Jonas234, almost 13 years ago:

can you post the whole code ?

Problem about setColorAt & getColorAt method

By Upupzealot, with 15 replies.
Last reply by davmac, almost 13 years ago:

Because it might be slower. Greenfoot uses what the system gives it.

No Keyboard-Reactions after exporting to Webpage

By TheoHeusser, with no replies.

Hi, can anyone imagine what went wrong. Pupils constructed a simple game (run away from spiders which are always following you; the player uses the arrow keys to seepd up or down or change direction of movement). Within Greenfoot the game worked fine. But after exporting toa webpage and starting the html-file, there is no more control via the arrow keys! (some Browser won't seven start the game.) GF 2.2.1

Report 2 Bugs of Greemfoot 2.2.1

By Upupzealot, with 7 replies.
Last reply by Upupzealot, almost 13 years ago:

@davmac I can't reproduce the inner class problem also, but you can find that even the inner class is deleted from the source code, the compiled classes files was still in the project folder. And you are right, "test/board.jpg" works good, but "/test/board.jpg" only works in Greenfoot. MayI ask why?

Bouncing balls at corresponding angles

By Phytrix, with 3 replies.
Last reply by Phytrix, almost 13 years ago:

Need Help Please. When i compile this it will say not a statement.

By Zaraki, with 1 reply.
Replied to by danpost, almost 13 years ago:

One thing is that by naming your bullet objects with numbers, you are probably confusing the compiler (naming convension has variable names start with lowercase letters only). Another is that you do no have a field name for the bullet created in the else portion of the code.

Loading an image within a circle

By mattrayner, with 3 replies.
Last reply by robg, almost 13 years ago:

For anyone that comes across this looking for the same thing, take a look at our solution here -> Image within a circle Solution Outline - Created a new BufferedImage & got the Graphics2D object (The same size as the orignal image - Drew the Elipse that we wished to crop by. (In white) - Changed the Composite of the image to AlphaComposite.SrcAtop to allow us to clip any further drawing to the elipse. - Drew the original BufferedImage onto the new one Make sure to use the correct type when creating the BufferedImage, if you

Repeat Until?

By saskekun95, with 1 reply.
Replied to by danpost, almost 13 years ago:

You do not need seperate methods for 'downwards' and 'upwards'. All you need is to 'turn' the actor when the proper conditions are met. The conditions to turn around at the top of the screen are (1) the y-coordinate of the actor is zero and (2) the rotation of the actor is 270. The conditions to turn around at the bottom of the screen are (1) the y-coordinate of the actor is one less than the width of the world and (2) the rotation of the actor is 90. When either set of conditions is true, turn the actor around 180 degrees.

java.lang.nullpointerException-Error

By Mepp, with 6 replies.
Last reply by davmac, almost 13 years ago:

That means that 'spf' is null. It is the same problem - you are calling a method on a null reference.

HELP! Is it possible to blend classes?

By sopi, with 5 replies.
Last reply by danpost, almost 13 years ago:

What I see is a class with a Counter object called 'counter' that is never anything but 'null'; and, if the public method 'activate' is ever called, will cause a NullPointerException.

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