Discussions

All recent versions of Greenfoot include the JDK and don't require a separate download. Which version of Greenfoot have you installed? And when you say you have "reinstalled Java SE download several times" what download is that exactly (is it the JDK? If you're not sure, what was the URL of the web page you downloaded it from? What version of Java was it?)

A field is a variable that is declared within a class, but outside of any code blocks. A variable declared within a code block only exists during the execution of the block. Once an execution block terminates, variables declared within the block no longer exist. Example 1:

We've now replicated such an issue and fixed the bug ready for 3.5.1. Try the following to see if it also fixes the issue for you -- open your world class editor, then go to the very end of the class, and press return a couple of times to add a blank line at the end. The bug we found seemed to relate to the lack of a newline at the end of the file confusing the editor.

You can base the random chance to spawn on the number of rocks currently in the world. For example, line 3 could be: <Code Omitted>

There seems to be several issues with the given code. I cannot positively say that any are directly related to your current issue. (1) You should only need to get the UserInfo object once -- not every act cycle; and certainly not twice every act cycle, which is what appears to be what your current code does (act method first calls getUserInfo, then calls setHigscore, which also taps the server for the UserInfo object). Add a constructor to get the UserInfo object and throughout the rest of the class, just check to make sure it is not still nul

Hi, (as per Greenroom discussion) the student can contact support via support@greenfoot.org - if we have their email address/username we can investigate. The most likely reason is that they are entering the wrong username when logging in. (Perhaps they are entering their email address instead of username).

Thank you for this I found out that Greenfoot 3 requires JavaFX support, which is not available on the Raspberry Pi. Please use Greenfoot 2.4.2a. So anyone else having this problem with a raspberry pi just down grade. I found this out on the support page but decided to put it here to make one less click for everyone else.

Add the following line at the end of the addedToWorld method: <Code Omitted>

cool thanks

I believe you would use something like the following somewhere in the act method in your Piano class: <Code Omitted>

You do not have to change the method at all. Any actor passed to it, whether of Ogre type or not will be initially placed at a random edge point. You will need to call this method from where you remove an ogre from the world (when one is killed): <Code Omitted>

I used google translate to get this so I don't know if it's what you want exactly. But if you're wanting to delete objects you can use this. <Code Omitted>

Thanks :)