@@Because of Softimage's close ties with Phoenix Tools (softbodies, cloth, etc.), there is a fair chance that it is based on PT's Behave crowd simulation plugin for Soft|3D.
No - it's not PhoenixTools.
The crowd simulation and behaviours for XSI is based on the RTK|Motion and RTK|Behave softwares which are much more advanced and of higher quality. The softwares were acquired as part of Avid's purchase of the Motion Factory last year.
There's a 20 minute AVI on Softimage's website demonstrating the applications of these tools:
http://www.softimage.com/download/rtk/demo/form.asp
Matt
Matt Lind
Animator / Technical Director
Softimage certified instructor:
Softimage|3D
Softimage|XSI
speye_21@hotmail.com