SuperTux Editor Help (Adding Custom Objects)

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http://ubuntuforums.org – Hey gus. Quick question regarding the supertux editor. I've posted this on the supertux forums as well, but since answers are quite rare I'll post this question here as well. Question: How does one add custom objects to the editor? As an object, I mean objects that have interactive properties. I am trying to have my own infobox without replacing the current one, as I need to use both of them. Here's a picture of white I am trying to accomplish: https://www.dropbox.com/s/1ved23nygs5b4oi/tuxdemo.png It's an animated orb that needs to behave like the infoblock. If you know how (Hardware)