Discussions

Yes, a very big difference. By saying <Code Omitted> you are saying "Get the world! do nothing with it. And then try to removeObjects" But only the world is able to remove objects, so you need to do this: <Code Omitted> which says "Get the world, and then *use* the world to remove this object" which is what you want

Oh... Thanks This exactlly what I need

@kwill1429 Yes, I could... But then i would need 500 or more Wombat-Pictures... And I think, thats too mutch... @mik Thank you very much! :D

Nevermind! I found my problem, and have since fixed it.

Oh thanks! i did not know that greenfoot draws everything again every act! that's helpfull! thanks again, Mattan.

thanks a lot it finally worked :) (tried it before, but, somehow it always returned null, so i droped the idea; was standing in the "method described here". Still wondering why it did that^^ )

Both replies here have pointed out that you cannot write to a file (or connect to another website) when running in the Gallery. That is true. The reason is security: If any applet running on a web page was able to write to your file system, then just opening a web page could raise hell on your computer. The web page might contain an applet that erases all your files and replaces them with cats on skateboards. To prevent this, applets (and Greenfoot scenarios in the Gallery are applets) are run in a "sandbox" -- i.e. they are forbidden to do anything that could be dangerous. And that incl

Make sure you have the newest form of Greenfoot. If your version is under 2.0, then GreenfootSound is unavailavble.

This may help slightly :P

Thanks davmac for the code. I'm glad I didn't have to search through the source like I did for my last major problem (collision detecting outside of the world, this was before Greenfoot 2).

Nevermind, collision with world edge is working now. Thanks again for the arrow movement!

Ah, fixed it. I needed to add it into the world panel by using: WorldHandler.getInstance().getWorldCanvas().addMouseWheelListener(myScrollingListener);

This is quite an advanced part of Java to u

Could you zip up your code and send it to support@greenfoot.org, so that we can take a look? And do the machines that you were trying to run the code on have different versions of Greenfoot?