Minor update this time – the functionality to draw arcs has been added this time – this means that SIEGE can now draw an arbitrary arc (elliptic as well), as opposed to merely circles and ellipses:
Current circle and ellipse-drawing code has been modified to use this instead.
Indeed, it is a small update, however work is being done on other things (it’s nearing completion) – coming soon – per-pixel collision detection and a generic implementation of the A* search algorithm (also a wrapper over it for grid-based pathfinding).
For the implementation, see the sources on Gitorious – note that the implementation may be done with the help of rational splines once those are added to SIEGE.