ZbotCheck.txt

ZbotCheck v1.01 for Quake 2 by Matt "WhiteFang" Ayres (matt@lithium.com)

This is provided for mod authors to implement Zbot detection, nothing more.
The code has so far proven to be reliable at detecting Zbot auto-aim clients
(cheaters).  However, no guarantees of any kind are made.  This is provided
as-is.  You must be familiar with Quake 2 mod coding to make use of this.

In g_local.h, add to the top of the struct client_respawn_t:

	char buf[24];

It needs to be the very first member.  Also, be aware that you can't modify 
client_persistent_t, as it is used before client_respawn_t in gclient_s
(this would cause the pre-compiled object to reference the wrong piece
of memory).  It should be noted that there is no real reason to modify
client_persistent_t, simply use gclient_s (because in PutClientInServer,
both are reset in deathmatch mode).

Next, in p_client.c, add a simple forward declaration:

	qboolean ZbotCheck(edict_t *ent, usercmd_t *ucmd);

Then in p_client.c, anywhere in the ClientThink function, you call the
ZbotCheck function.  Pass it the same parameters you get from ClientThink.
It will return true if the client is using a Zbot.  Simple example:

	if(ZbotCheck(ent, ucmd))
		gi.bprintf(PRINT_HIGH, ">>> Zbot detected: %s\n",
		ent->client->pers.netname);

From here you can do as you please with the cheater.  ZbotCheck will only
return true once, following returns will be false.  Link in the appropiate
zbotcheck.obj or zbotcheck.o for the platform you're compiling for, and
that's it.

The source for ZbotCheck is not being released publicly for fairly obvious
reasons.  If you've successfully implemented ZbotCheck and encounter a
problem, please contact me.  

-WhiteFang