[Help] Warface - "virtual functions" help please topic

Hi guys.
I want to add to my hack "ESP classes"(medic,sniper,engineer ets.) of players and "ESP weapons" (guns,mines,grenades) of players.
Who can share part of the code? example? or suggest what "virtual functions and classes" needed for this?http://www.youtube.com/watch?v=d5qqSz1wzdM