Is this deterministic? and what could be done to make it that way? [needed for multiplayer/replay purposes]

team INOV:
CURRENT PROJECTS: http://www.youtube.com/user/teamINOV?feature=mhee
FOLLOW US on twitter: http://twitter.com/team_iNoV
check our blog: http://scionwars.blog.com/
shaders: http://shadec.project-havoc.com/
networking: http://www.anet-plugin.com/