FPD

FPD is a tool to enforce restrictions on client and proxy features in QuakeWorld.

The server sends a string called serverinfo to the clients and in this string there is an entry called FPD. From the value of the FPD clients and proxies recognize which features are enabled or disabled on the server.

Originaly it was made for the Qizmo proxy. The value of the FPD consist of 10 bits with following meaning:

FPD

bit	value	function	command	Qizmo	clients	standard*
0	1	Disable %-reporting	-	obey	force off	off
1	2	Disable use of powerup timer	qtimer	force on	obey	on
2	4	Disable use of soundtrigger	-	obey	obey	both
3	8	Disable use of lag features	qlag	obey	force off	on
4	16	Report any changes in lag settins	-	obey	force on	off
5	32	Silent %e enemy vicinity reporting (reporter doesn't see the message)	qenemy	force on	force on	off
6	64	Spectators can't talk to players and vice versa (Qizmo voice)	silence	obey	not impl.	both
7	128	Silent %x and %y (reporter doesn't see the message)	qpoint	force on	force off	on
8	256	Disable skin forcing	-	obey	obey	N/A
9	512	Disable color forcing	-	obey	obey	N/A
14	16384	Limit pitch speed	-	not impl.	obey	both
15	32768	Limit yaw speed	-	not impl.	obey	both

(*) By standard we mean what's used on most 4on4 servers and what makes most sense in current gaming environment.

Recommended and most used value for usual 4on4 server: 206

Nowadays only 256 and 512 FPD bits are a matter of "to be standardized", because of the Color Forcing issue.