Hi,
i am working on bots, and i have used Botman’s HPB Bots (for Half Life).
Botman introduce a library between the mod and the engine, so he can modify some parts of a mod without changing his source code (and he don’t need the source code).
This solution is interesting because it will be easier to use things like bots for different mods 
Can we include a library between a mod and the engine ? (I think it is possible, but i am not sure)
And what could be the difficulties ? (Punkbuster ?)
Thanks,
Alan