Limits would be good as well as using revolute joint. Revelute joint actually would work the same as rotate about. You just need to add joints. Baxslash may have more time then I do right know so he might add on his editor: wish that we had worked together on the project baxslash I have used your editor as well as mine there are still features I like about yours like zoom. Dark gdk does not have zoom.
maybe other programmers going to colledge that I am going too can help with the project. I don't know if they will or not. If that does not happen I might make it an open source project. I still think that AppGameKit is not a good program to make the project in. It might easier then dark gdk but lacks Gui functionality.
Agk strength is box 2d- Gdk they don't have support for general use of these functions.
Developer of Space Chips, pianobasic, zipzapzoom, and vet pinball apps. Developed the tiled map engine seen on the showcase. Veteran for the military.