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fteqw/engine/common/cvar.c

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/*
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// cvar.c -- dynamic variable tracking
#include "quakedef.h"
#include "shader.h"
cvar_group_t *cvar_groups;
hashtable_t cvar_hash;
bucket_t *cvar_buckets[1024];
//cvar_t *cvar_vars;
static char *cvar_null_string = "";
static char *cvar_zero_string = "0";
static char *cvar_one_string = "1";
char *Cvar_DefaultAlloc(char *str)
{
char *c;
if (str[0] == '\0')
return cvar_null_string;
if (str[0] == '0' && str[1] == '\0')
return cvar_zero_string;
if (str[0] == '1' && str[1] == '\0')
return cvar_one_string;
c = (char *)Z_Malloc(strlen(str)+1);
Q_strcpy(c, str);
return c;
}
void Cvar_DefaultFree(char *str)
{
if (str == cvar_null_string)
return;
else if (str == cvar_zero_string)
return;
else if (str == cvar_one_string)
return;
else
Z_Free(str);
}
/*
============
Cvar_FindVar
============
*/
cvar_t *Cvar_FindVar (const char *var_name)
{
return Hash_GetInsensative(&cvar_hash, var_name);
/*
cvar_group_t *grp;
cvar_t *var;
for (grp=cvar_groups ; grp ; grp=grp->next)
for (var=grp->cvars ; var ; var=var->next)
{
if (!Q_strcasecmp (var_name, var->name))
return var;
if (var->name2 && !Q_strcasecmp (var_name, var->name2))
return var;
}
*/
return NULL;
}
cvar_group_t *Cvar_FindGroup (const char *group_name)
{
cvar_group_t *grp;
for (grp=cvar_groups ; grp ; grp=grp->next)
if (!Q_strcasecmp (group_name, grp->name))
return grp;
return NULL;
}
cvar_group_t *Cvar_GetGroup(const char *gname)
{
cvar_group_t *g;
if (!gname)
gname = "Miscilaneous vars";
g = Cvar_FindGroup(gname);
if (g)
return g;
g = (cvar_group_t*)Z_Malloc(sizeof(cvar_group_t) + strlen(gname)+1);
g->name = (char*)(g+1);
strcpy((char*)g->name, gname);
g->next = NULL;
g->next = cvar_groups;
cvar_groups = g;
return g;
}
// converts a given single cvar flag into a human readable string
char *Cvar_FlagToName(int flag)
{
switch (flag)
{
case CVAR_ARCHIVE:
return "archive";
case CVAR_USERINFO:
return "userinfo";
case CVAR_SERVERINFO:
return "serverinfo";
case CVAR_NOSET:
return "noset";
case CVAR_LATCH:
return "latch";
case CVAR_POINTER:
return "pointer";
case CVAR_NOTFROMSERVER:
return "noserver";
case CVAR_USERCREATED:
return "userset";
case CVAR_CHEAT:
return "cheat";
case CVAR_SEMICHEAT:
return "semicheat";
case CVAR_RENDERERLATCH:
return "renderlatch";
case CVAR_SERVEROVERRIDE:
return "serverlatch";
case CVAR_RENDERERCALLBACK:
return "rendercallback";
case CVAR_NOUNSAFEEXPAND:
return "nounsafeexpand";
case CVAR_RULESETLATCH:
return "rulesetlatch";
}
return NULL;
}
//lists commands, also prints restriction level
#define CLF_RAW 0x1
#define CLF_LEVEL 0x2
#define CLF_ALTNAME 0x4
#define CLF_VALUES 0x8
#define CLF_DEFAULT 0x10
#define CLF_LATCHES 0x20
#define CLF_FLAGS 0x40
#define CLF_FLAGMASK 0x80
void Cvar_List_f (void)
{
cvar_group_t *grp;
cvar_t *cmd;
char *var, *search, *gsearch;
int gnum, i, num = 0;
int listflags = 0, cvarflags = 0;
char strtmp[512];
gsearch = search = NULL;
for (i = 1; i < Cmd_Argc(); i++)
{
var = Cmd_Argv(i);
if (*var == '-')
{
// short options
for (var++; *var; var++)
{
switch (*var)
{
case 'g':
// fix this so we can search for multiple groups
i++;
if (i >= Cmd_Argc())
{
Con_Printf("Missing parameter for -g\nUse cvarlist -h for help\n");
return;
}
gsearch = Cmd_Argv(i);
break;
case 'a':
listflags |= CLF_ALTNAME;
break;
case 'l':
listflags |= CLF_LEVEL;
break;
case 'r':
listflags |= CLF_RAW;
break;
case 'v':
listflags |= CLF_VALUES;
break;
case 'd':
listflags |= CLF_DEFAULT;
break;
case 'L':
listflags |= CLF_LATCHES;
break;
case 'f':
{
char *tmpv;
listflags |= CLF_FLAGMASK;
i++;
if (i >= Cmd_Argc())
{
Con_Printf("Missing parameter for -f\nUse cvarlist -h for help\n");
return;
}
tmpv = Cmd_Argv(i);
for (num = 1; num <= CVAR_LASTFLAG; num <<= 1)
{
char *tmp;
tmp = Cvar_FlagToName(num);
if (tmp && !stricmp(tmp, tmpv))
{
cvarflags |= num;
break;
}
}
if (num > CVAR_LASTFLAG)
{
Con_Printf("Invalid cvar flag name\nUse cvarlist -h for help\n");
return;
}
}
break;
case 'F':
listflags |= CLF_FLAGS;
break;
case 'h':
// list options
Con_Printf("cvarlist list all cvars matching given parameters\n"
"Syntax: cvarlist [-FLdhlrv] [-f flag] [-g group] [cvar]\n"
" -F shows cvar flags\n"
" -L shows latched values\n"
" -a shows cvar alternate names\n"
" -d shows default cvar values\n"
" -f shows only cvars with a matching flag, more than one -f can be used\n"
" -g shows only cvar groups using wildcards in group\n"
" -h shows this help message\n"
" -l shows cvar restriction levels\n"
" -r removes group and list headers\n"
" -v shows current values\n"
" cvar indicates the cvar to show, wildcards (*,?) accepted\n"
"Cvar flags are:");
for (num = 1; num <= CVAR_LASTFLAG; num <<= 1)
{
// no point caring about the content of var at this point
var = Cvar_FlagToName(num);
if (var)
Con_Printf(" %s", var);
}
Con_Printf("\n\n");
return;
case '-':
break;
default:
Con_Printf("Invalid option for cvarlist\nUse cvarlist -h for help\n");
return;
}
}
}
else
search = var;
}
// this is sane.. hopefully
if (gsearch)
Q_strlwr(gsearch);
if (search)
Q_strlwr(search);
for (grp=cvar_groups ; grp ; grp=grp->next)
{
// list only cvars with group search substring
if (gsearch)
{
Q_strncpyz(strtmp, grp->name, 512);
Q_strlwr(strtmp);
if (!wildcmp(gsearch, strtmp))
continue;
}
gnum = 0;
for (cmd=grp->cvars ; cmd ; cmd=cmd->next)
{
// list only non-restricted cvars
if ((cmd->restriction?cmd->restriction:rcon_level.ival) > Cmd_ExecLevel)
continue;
// list only cvars with search substring
if (search)
{
Q_strncpyz(strtmp, cmd->name, 512);
Q_strlwr(strtmp);
if (!wildcmp(search, strtmp))
{
if (cmd->name2)
{
Q_strncpyz(strtmp, cmd->name2, 512);
Q_strlwr(strtmp);
if (!wildcmp(search, strtmp))
continue;
}
else
continue;
}
}
// list only cvars with matching flags
if ((listflags & CLF_FLAGMASK) && !(cmd->flags & cvarflags))
continue;
// print cvar list header
if (!(listflags & CLF_RAW) && !num)
Con_TPrintf(TL_CVARLISTHEADER);
// print group header
if (!(listflags & CLF_RAW) && !gnum)
Con_Printf("%s --\n", grp->name);
// print restriction level
if (listflags & CLF_LEVEL)
Con_Printf("(%i) ", cmd->restriction);
// print cvar name
Con_Printf(cmd->name);
// print current value
if (listflags & CLF_VALUES)
{
if (*cmd->string)
Con_Printf(" %s", cmd->string);
}
// print default value
if (listflags & CLF_DEFAULT)
Con_Printf(", default \"%s\"", cmd->defaultstr);
// print alternate name
if ((listflags & CLF_ALTNAME) && cmd->name2)
Con_Printf(", alternate %s", cmd->name2);
// print cvar flags
if (listflags & CLF_FLAGS)
{
for (i = 1; i <= CVAR_LASTFLAG; i <<= 1)
{
if (i & cmd->flags)
{
var = Cvar_FlagToName(i);
if (var)
Con_Printf(" %s", var);
}
}
}
// print latched value
if (listflags & CLF_LATCHES)
{
if (cmd->latched_string)
Con_Printf(", latched as \"%s\"", cmd->latched_string);
}
// print new line to finish individual cvar
Con_Printf("\n");
num++;
gnum++;
}
// print new line to seperate groups
if (!(listflags & CLF_RAW) && gnum)
Con_Printf("\n");
}
}
#define CRF_ALTNAME 0x1
void Cvar_Reset_f (void)
{
cvar_group_t *grp;
cvar_t *cmd;
int i, listflags=0, exclflags;
char *var;
char *search, *gsearch;
char strtmp[512];
search = gsearch = NULL;
exclflags = 0;
// parse command line options
for (i = 1; i < Cmd_Argc(); i++)
{
var = Cmd_Argv(i);
if (*var == '-')
{
// short options
for (var++; *var; var++)
{
switch (*var)
{
case 'a':
listflags |= CRF_ALTNAME;
break;
case 'g':
// fix this so we can search for multiple groups
i++;
if (i >= Cmd_Argc())
{
Con_Printf("Missing parameter for -g\nUse cvarlist -h for help\n");
return;
}
gsearch = Cmd_Argv(i);
break;
case 'u':
exclflags |= CVAR_USERCREATED;
case 'h':
Con_Printf("cvarreset resets all cvars to default values matching given parameters\n"
"Syntax: cvarreset [-ahu] (-g group)/cvar\n"
" -a matches cvar against alternate cvar names\n"
" -g matches using wildcards in group\n"
" -h shows this help message\n"
" -u excludes user cvars\n"
" cvar indicates the cvars to reset, wildcards (*, ?) accepted\n"
"A -g or cvar is required\n");
return;
default:
Con_Printf("Invalid option for cvarreset\nUse cvarreset -h for help\n");
return;
}
}
}
else
search = var;
}
if (!search && !gsearch)
{
Con_Printf("No group or cvars given\nUse cvarreset -h for help\n");
return;
}
// this should be sane.. hopefully
if (search)
Q_strlwr(search);
if (gsearch)
Q_strlwr(gsearch);
for (grp=cvar_groups ; grp ; grp=grp->next)
{
if (gsearch)
{
Q_strncpyz(strtmp, grp->name, 512);
Q_strlwr(strtmp);
if (!wildcmp(gsearch, strtmp))
continue;
}
for (cmd=grp->cvars ; cmd ; cmd=cmd->next)
{
// reset only non-restricted cvars
if ((cmd->restriction?cmd->restriction:rcon_level.ival) > Cmd_ExecLevel)
continue;
// don't reset cvars with matched flags
if (exclflags & cmd->flags)
continue;
// reset only cvars with search substring
if (search)
{
Q_strncpyz(strtmp, cmd->name, 512);
Q_strlwr(strtmp);
if (!wildcmp(search, strtmp))
{
if ((listflags & CRF_ALTNAME) && cmd->name2)
{
Q_strncpyz(strtmp, cmd->name2, 512);
Q_strlwr(strtmp);
if (!wildcmp(search, strtmp))
continue;
}
else
continue;
}
}
// reset cvar to default
Cvar_Set(cmd, cmd->defaultstr);
}
}
}
/*
============
Cvar_VariableValue
============
*/
float Cvar_VariableValue (const char *var_name)
{
cvar_t *var;
var = Cvar_FindVar (var_name);
if (!var)
return 0;
return Q_atof (var->string);
}
/*
============
Cvar_VariableString
============
*/
char *Cvar_VariableString (const char *var_name)
{
cvar_t *var;
var = Cvar_FindVar (var_name);
if (!var)
return cvar_null_string;
return var->string;
}
/*
============
Cvar_CompleteVariable
============
*/
/* moved to cmd_compleatevariable
char *Cvar_CompleteVariable (char *partial)
{
cvar_group_t *grp;
cvar_t *cvar;
int len;
len = Q_strlen(partial);
if (!len)
return NULL;
// check exact match
for (grp=cvar_groups ; grp ; grp=grp->next)
for (cvar=grp->cvars ; cvar ; cvar=cvar->next)
if (!strcmp (partial,cvar->name))
return cvar->name;
// check partial match
for (grp=cvar_groups ; grp ; grp=grp->next)
for (cvar=grp->cvars ; cvar ; cvar=cvar->next)
if (!Q_strncmp (partial,cvar->name, len))
return cvar->name;
return NULL;
}
*/
/*
============
Cvar_Set
============
*/
cvar_t *Cvar_SetCore (cvar_t *var, const char *value, qboolean force)
{ //fixme: force should probably be a latch bitmask
char *latch=NULL;
if (!var)
return NULL;
if ((var->flags & CVAR_NOSET) && !force)
{
Con_Printf ("variable %s is readonly\n", var->name);
return NULL;
}
if (var->flags & CVAR_SERVEROVERRIDE && !force)
latch = "variable %s is under server control - latched\n";
else if (var->flags & CVAR_LATCH)
latch = "variable %s is latched and will be applied for the start of the next map\n";
// else if (var->flags & CVAR_LATCHFLUSH)
// latch = "variable %s is latched (type flush)\n";
else if (var->flags & CVAR_RENDERERLATCH && qrenderer != QR_NONE)
latch = "variable %s will be changed after a vid_restart\n";
else if (var->flags & CVAR_RULESETLATCH)
latch = "variable %s is latched due to current ruleset\n";
#ifndef SERVERONLY
else if (var->flags & CVAR_CHEAT && !cls.allow_cheats && cls.state)
latch = "variable %s is a cheat variable - latched\n";
else if (var->flags & CVAR_SEMICHEAT && !cls.allow_semicheats && cls.state)
latch = "variable %s is a cheat variable - latched\n";
#endif
if (latch && !force)
{
if (cl_warncmd.value)
{
if (var->latched_string)
{ //already latched
if (strcmp(var->latched_string, value))
Con_Printf (latch, var->name);
}
else
{ //new latch
if (strcmp(var->string, value))
Con_Printf (latch, var->name);
}
}
if (var->latched_string && !strcmp(var->latched_string, value)) //no point, this would force the same
return NULL;
if (var->latched_string)
Z_Free(var->latched_string);
if (!strcmp(var->string, value)) //latch to the original value? remove the latch.
{
var->latched_string = NULL;
return NULL;
}
var->latched_string = (char*)Z_Malloc(strlen(value)+1);
strcpy(var->latched_string, value);
return NULL;
}
#ifndef CLIENTONLY
if (var->flags & CVAR_SERVERINFO)
{
Info_SetValueForKey (svs.info, var->name, value, MAX_SERVERINFO_STRING);
SV_SendServerInfoChange(var->name, value);
// SV_BroadcastCommand ("fullserverinfo \"%s\"\n", svs.info);
}
#endif
#ifndef SERVERONLY
if (var->flags & CVAR_SHADERSYSTEM)
{
if (var->string && value)
if (strcmp(var->string, value))
Shader_NeedReload();
}
if (var->flags & CVAR_USERINFO)
{
char *old = Info_ValueForKey(cls.userinfo, var->name);
if (strcmp(old, value)) //only spam the server if it actually changed
{ //this helps with config execs
Info_SetValueForKey (cls.userinfo, var->name, value, sizeof(cls.userinfo));
if (cls.state >= ca_connected)
{
#ifdef Q2CLIENT
if (cls.protocol == CP_QUAKE2 || cls.protocol == CP_QUAKE3) //q2 just resends the lot. Kinda bad...
{
cls.resendinfo = true;
}
else
#endif
{
CL_SendClientCommand(true, "setinfo \"%s\" \"%s\"\n", var->name, value);
}
}
}
}
#endif
latch = var->string;//save off the old value (so cvar_set(var, var->string) works)
var->string = (char*)Z_Malloc (Q_strlen(value)+1);
Q_strcpy (var->string, value);
var->value = Q_atof (var->string);
var->ival = Q_atoi (var->string);
if (latch)
{
if (strcmp(latch, value))
{
var->modified++; //only modified if it changed.
if (var->callback)
var->callback(var, latch);
}
Z_Free (latch); // free the old value string
}
if (var->latched_string) //we may as well have this here.
{
Z_Free(var->latched_string);
var->latched_string = NULL;
}
return var;
}
qboolean Cvar_ApplyLatchFlag(cvar_t *var, char *value, int flag)
{
qboolean result = true;
char *latch;
var->flags &= ~flag;
latch = var->latched_string;
var->latched_string = NULL;
if (!latch)
{
#ifndef _MSC_VER
#warning this means the callback will never be called
#endif
latch = var->string;
var->string = NULL;
}
#ifndef _MSC_VER
#warning set or forceset?
#endif
Cvar_ForceSet(var, value);
if (var->latched_string)
{ //something else latched it
Z_Free(var->latched_string);
var->latched_string = NULL;
result = false;
}
else
var->flags |= flag;
if (latch)
{
if (!strcmp(var->string, latch))
Z_Free(latch); //don't allow a latch to be the same as the current value
else
var->latched_string = latch;
}
return result;
}
void Cvar_ForceCheatVars(qboolean semicheats, qboolean absolutecheats)
{ //this either unlatches if the cheat type is allowed, or enforces a default for full cheats and blank for semicheats.
//this is clientside only.
//if a value is enforced, it is latched to the old value.
cvar_group_t *grp;
cvar_t *var;
char *latch;
for (grp=cvar_groups ; grp ; grp=grp->next)
for (var=grp->cvars ; var ; var=var->next)
{
if (!(var->flags & (CVAR_CHEAT|CVAR_SEMICHEAT)))
continue;
latch = var->latched_string;
var->latched_string = NULL;
if (!latch)
{
#ifndef _MSC_VER
#warning this means the callback will never be called
#endif
latch = var->string;
var->string = NULL;
}
if (var->flags & CVAR_CHEAT)
{
if (!absolutecheats)
Cvar_ForceSet(var, var->defaultstr);
else
Cvar_ForceSet(var, latch);
}
if (var->flags & CVAR_SEMICHEAT)
{
if (!semicheats)
Cvar_ForceSet(var, "");
else
Cvar_ForceSet(var, latch);
}
if (latch)
{
if (!strcmp(var->string, latch))
Z_Free(latch);
else
var->latched_string = latch;
}
}
}
void Cvar_ApplyLatches(int latchflag)
{
cvar_group_t *grp;
cvar_t *var;
int mask = ~0;
int of;
if (latchflag == CVAR_SERVEROVERRIDE || latchflag == CVAR_RULESETLATCH) //these ones are cleared
mask = ~latchflag;
for (grp=cvar_groups ; grp ; grp=grp->next)
for (var=grp->cvars ; var ; var=var->next)
{
if (var->flags & latchflag)
{
if (var->latched_string)
{
of = var->flags;
var->flags &= ~latchflag;
Cvar_Set(var, var->latched_string);
var->flags = of;
}
var->flags &= mask;
}
}
}
cvar_t *Cvar_Set (cvar_t *var, const char *value)
{
return Cvar_SetCore(var, value, false);
}
cvar_t *Cvar_ForceSet (cvar_t *var, const char *value)
{
return Cvar_SetCore(var, value, true);
}
/*
============
Cvar_SetValue
============
*/
void Cvar_SetValue (cvar_t *var, float value)
{
char val[32];
if (value == (int)value)
sprintf (val, "%i",(int)value); //make it look nicer.
else
sprintf (val, "%f",value);
Cvar_Set (var, val);
}
void Cvar_Free(cvar_t *tbf)
{
cvar_t *var;
cvar_group_t *grp;
if (!(tbf->flags & CVAR_POINTER))
return; //only freeable if it was a pointer to begin with.
for (grp=cvar_groups ; grp ; grp=grp->next)
{
if (grp->cvars == tbf)
{
grp->cvars = tbf->next;
goto unlinked;
}
for (var=grp->cvars ; var->next ; var=var->next)
{
if (var->next == tbf)
{
var->next = tbf->next;
goto unlinked;
}
}
}
unlinked:
Z_Free(tbf->string);
if (tbf->flags & CVAR_FREEDEFAULT)
Cvar_DefaultFree(tbf->defaultstr);
if (tbf->latched_string)
Z_Free(tbf->latched_string);
Hash_RemoveData(&cvar_hash, tbf->name, tbf);
if (tbf->name2)
Hash_RemoveData(&cvar_hash, tbf->name2, tbf);
Z_Free(tbf);
}
/*
============
Cvar_RegisterVariable
Adds a freestanding variable to the variable list.
============
*/
qboolean Cvar_Register (cvar_t *variable, const char *groupname)
{
cvar_t *old;
cvar_group_t *group;
char *initial;
if (variable->defaultstr)
initial = variable->defaultstr;
else
initial = variable->string;
// check to see if it has already been defined
old = Cvar_FindVar (variable->name);
if (old)
{
if (old->flags & CVAR_POINTER)
{
group = Cvar_GetGroup(groupname);
variable->modified = old->modified;
variable->flags |= (old->flags & CVAR_ARCHIVE);
// link the variable in
variable->next = group->cvars;
variable->restriction = old->restriction; //exe registered vars
group->cvars = variable;
// make sure it can be zfreed
variable->string = (char*)Z_Malloc (1);
//cheat prevention - engine set default is the one that stays.
if (variable->flags & CVAR_FREEDEFAULT)
variable->defaultstr = Cvar_DefaultAlloc(initial);
else
variable->defaultstr = initial;
// set it through the function to be consistant
if (old->latched_string)
Cvar_SetCore (variable, old->latched_string, true);
else
Cvar_SetCore (variable, old->string, true);
Cvar_Free(old);
Hash_AddInsensative(&cvar_hash, variable->name, variable, &variable->hbn1);
if (variable->name2)
Hash_AddInsensative(&cvar_hash, variable->name2, variable, &variable->hbn2);
return false;
}
Con_Printf ("Can't register variable %s, already defined\n", variable->name);
return false;
}
// check for overlap with a command
if (Cmd_Exists (variable->name))
{
Con_Printf ("Cvar_RegisterVariable: %s is a command\n", variable->name);
return false;
}
group = Cvar_GetGroup(groupname);
// link the variable in
variable->next = group->cvars;
variable->restriction = 0; //exe registered vars
group->cvars = variable;
Hash_AddInsensative(&cvar_hash, variable->name, variable, &variable->hbn1);
if (variable->name2)
Hash_AddInsensative(&cvar_hash, variable->name2, variable, &variable->hbn2);
variable->string = (char*)Z_Malloc (1);
if (variable->flags & CVAR_FREEDEFAULT)
variable->defaultstr = Cvar_DefaultAlloc(initial);
else
variable->defaultstr = initial;
// set it through the function to be consistant
Cvar_SetCore (variable, initial, true);
return true;
}
cvar_t *Cvar_Get(const char *name, const char *defaultvalue, int flags, const char *group)
{
cvar_t *var;
int old;
var = Cvar_FindVar(name);
if (var)
{
//allow this to change all < cvar_latch values.
//this allows q2 dlls to apply different flags to a cvar without destroying our important ones (like cheat).
old = var->flags;
var->flags = (var->flags & ~(CVAR_NOSET)) | (flags & (CVAR_NOSET|CVAR_SERVERINFO|CVAR_USERINFO|CVAR_ARCHIVE));
if (old != var->flags)
{
Cvar_Set(var, var->string);
}
return var;
}
var = (cvar_t*)Z_Malloc(sizeof(cvar_t)+strlen(name)+1);
var->name = (char *)(var+1);
strcpy(var->name, name);
var->string = (char*)defaultvalue;
var->flags = flags|CVAR_POINTER|CVAR_FREEDEFAULT|CVAR_USERCREATED;
if (!Cvar_Register(var, group))
return NULL;
return var;
}
//prevent the client from altering the cvar until they change map or the server resets the var to the default.
void Cvar_LockFromServer(cvar_t *var, const char *str)
{
char *oldlatch;
Con_DPrintf("Server taking control of cvar %s (%s)\n", var->name, str);
var->flags |= CVAR_SERVEROVERRIDE;
oldlatch = var->latched_string;
if (oldlatch) //maintaining control
var->latched_string = NULL;
else //taking control
{
oldlatch = (char*)Z_Malloc(strlen(var->string)+1);
strcpy(oldlatch, var->string);
}
Cvar_SetCore (var, str, true); //will use all, quote included
var->latched_string = oldlatch; //keep track of the original value.
}
/*
============
Cvar_Command
Handles variable inspection and changing from the console
============
*/
qboolean Cvar_Command (int level)
{
cvar_t *v;
char *str;
// check variables
v = Cvar_FindVar (Cmd_Argv(0));
if (!v)
return false;
if ((v->restriction?v->restriction:rcon_level.ival) > level)
{
Con_Printf ("You do not have the priveledges for %s\n", v->name);
return true;
}
if (v->flags & CVAR_NOTFROMSERVER && Cmd_FromGamecode())
{
Con_Printf ("Server tried setting %s cvar\n", v->name);
return true;
}
// perform a variable print or set
if (Cmd_Argc() == 1)
{
Con_Printf ("\"%s\" is \"%s\"\n", v->name, v->string);
if (v->latched_string)
Con_Printf ("Latched as \"%s\"\n", v->latched_string);
Con_Printf("Default: \"%s\"\n", v->defaultstr);
return true;
}
if (Cmd_Argc() == 2)
str = Cmd_Argv(1);
else
str = Cmd_Args();
if (v->flags & CVAR_NOSET)
{
Con_Printf ("Cvar %s may not be set via the console\n", v->name);
return true;
}
#ifndef SERVERONLY
if (Cmd_ExecLevel > RESTRICT_SERVER)
{ //directed at a secondary player.
CL_SendClientCommand(true, "%i setinfo %s \"%s\"", Cmd_ExecLevel - RESTRICT_SERVER-1, v->name, str);
return true;
}
if (v->flags & CVAR_SERVEROVERRIDE)
{
if (Cmd_FromGamecode())
{
if (!strcmp(v->defaultstr, str)) //returning to default
{
v->flags &= ~CVAR_SERVEROVERRIDE;
if (v->latched_string)
str = v->latched_string; //set to the latched
}
else
{
Cvar_LockFromServer(v, str);
return true;
}
}
//let cvar_set latch if needed.
}
else if (Cmd_FromGamecode())
{//it's not latched yet
if (strcmp(v->defaultstr, str))
{ //lock the cvar, unless it's going to it's default value.
Cvar_LockFromServer(v, str);
return true;
}
}
#endif
Cvar_Set (v, str); //will use all, quote included
return true;
}
/*
============
Cvar_WriteVariables
Writes lines containing "set variable value" for all variables
with the archive flag set to true.
============
*/
void Cvar_WriteVariables (vfsfile_t *f, qboolean all)
{
qboolean writtengroupheader;
cvar_group_t *grp;
cvar_t *var;
char *val;
char *s;
for (grp=cvar_groups ; grp ; grp=grp->next)
{
writtengroupheader = false;
for (var = grp->cvars ; var ; var = var->next)
if (var->flags & CVAR_ARCHIVE || all)
{
if (!writtengroupheader)
{
writtengroupheader = true;
s = va("\n// %s\n", grp->name);
VFS_WRITE(f, s, strlen(s));
}
val = var->string; //latched vars should act differently.
if (var->latched_string)
val = var->latched_string;
if (var->flags & CVAR_USERCREATED)
{
if (var->flags & CVAR_ARCHIVE)
s = va("seta %s \"%s\"\n", var->name, val);
else
s = va("set %s \"%s\"\n", var->name, val);
}
else
s = va("%s \"%s\"\n", var->name, val);
VFS_WRITE(f, s, strlen(s));
}
}
}
void Cvar_Hook(cvar_t *cvar, void (*callback) (struct cvar_s *var, char *oldvalue))
{
cvar->callback = callback;
}
void Cvar_Unhook(cvar_t *cvar)
{
cvar->callback = NULL;
}
void Cvar_ForceCallback(cvar_t *var)
{
if (var)
if (var->callback)
var->callback(var, var->string);
}
void Cvar_ApplyCallbacks(int callbackflag)
{
cvar_group_t *grp;
cvar_t *var;
for (grp=cvar_groups ; grp ; grp=grp->next)
for (var=grp->cvars ; var ; var=var->next)
{
if (var->flags & callbackflag)
{
if (var->callback)
var->callback(var, var->string);
}
}
}
// standard callbacks
void Cvar_Limiter_ZeroToOne_Callback(struct cvar_s *var, char *oldvalue)
{
if (var->value > 1)
{
Cvar_ForceSet(var, "1");
return;
}
else if (var->value < 0)
{
Cvar_ForceSet(var, "0");
return;
}
}
void Cvar_Init(void)
{
memset(cvar_buckets, 0, sizeof(cvar_buckets));
Hash_InitTable(&cvar_hash, sizeof(cvar_buckets)/Hash_BytesForBuckets(1), cvar_buckets);
}
void Cvar_Shutdown(void)
{
cvar_t *var;
cvar_group_t *grp;
while(cvar_groups)
{
while(cvar_groups->cvars)
{
var = cvar_groups->cvars;
cvar_groups->cvars = var->next;
if (var->flags & CVAR_FREEDEFAULT)
{
Cvar_DefaultFree(var->defaultstr);
var->defaultstr = NULL;
}
Z_Free(var->string);
if (var->flags & CVAR_POINTER)
Z_Free(var);
else
var->string = NULL;
}
grp = cvar_groups;
cvar_groups = grp->next;
Z_Free(grp);
}
}
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