After looking at some of the tutorial videos, I doubt that it really can be integrated in messiah. The current SDK allows neither creation of geometry nor any “guide stuff” or visual cues. You can’t select and manipulate polygons or points and you can’t create interactive tools that work in the viewport.
So it would have to be something like Shave and a Haircut, an external app to create and style the hair, and a shader to render it (at least that could be possible if it isn’t geometry based). But still you wouldn’t have a preview in the viewport…
ODE integration should be possible and not too hard (if someone has the time to do it), since it only deforms/transforms existing geometry.
I also looked into RealFlow3 integration - the new version really kicks ass - , but again, the SDK lacks too many options: No particle creation or direct animation is possible, no geometry import/creation and the metablobs are still completely broken in 2.1.
As sad as it is, I think messiahs has a long way to go until it is an interesting option for developers of more advanced tools… :shrug: