gFur, free shell based fur plugin

It would be great to have access to the splines during the game and put collisions on the splines as well as on the bushes. https://www.youtube.com/watch?v=wlkJkTPcVM0 https://www.youtube.com/watch?v=lo_0doseEaM https://img-9gag-fun.9cache.com/phot…_460svvp9.webm
Why is it that no one makes a similar plug-in on the hair? https://www.youtube.com/watch?v=uukXXpRQpNA