query_client_cvar и метамод

QueryClientCvarValue
void (*pfnQueryClientCvarValue)( const edict_t *player, const char

*cvarName );
from alfred@valvesoftware.com, via HLCoders
Calling this function requests the value of cvarName from player. The
result is returned via a callback from NEW_DLL_FUNCTIONS.
comments:
Added 2005-08-11, no SDK update. (Available in patched SDK as of
hlsdk-2.3-p2.)
Use of this function is DEPRECATED. It has been obsoleted by the
pfnQueryClientCvarValue2() function. See below.
This API can lead to conflicts when you query more than one cvar from
a player at a time. When using this function, use
IS_QUERYING_CLIENT_CVAR to check if another plugin is querying before
you do so. Use of this function is strongly advised against. Instead
use the pfnQueryClientCvarValue2() function.
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QueryClientCvarValue2
void (*pfnQueryClientCvarValue2)( const edict_t *player, const char
*cvarName, int requestID );
from alfred@valvesoftware.com, via hlds_apps
Calling this function requests the value of cvarName from player and
returns to you the supplied requestID on success (or failure). The
response is sent to a pfnCvarValue2 callback in the NEW_DLL_FUNCTIONS
structure.
comments:
Added 2005-11-23, no SDK update. (Available in patched SDK as of
hlsdk-2.3-p3.)