Magazyn Amiga 14/MA_Cover_14.iso/source/c/q1source_amy/qw/client/cvar.c

C/C++ Source or Header | 1999-12-21 | 4.7 KB | 250 lines

/*
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

#ifdef SERVERONLY
#include "qwsvdef.h"
#else
#include "quakedef.h"
#endif

cvar_t    *cvar_vars;
char    *cvar_null_string = "";

/*
============
Cvar_FindVar
============
*/
cvar_t *Cvar_FindVar (char *var_name)
{
    cvar_t    *var;

    for (var=cvar_vars ; var ; var=var->next)
        if (!Q_strcmp (var_name, var->name))
            return var;

    return NULL;
}

/*
============
Cvar_VariableValue
============
*/
float    Cvar_VariableValue (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 (char *var_name)
{
    cvar_t *var;

    var = Cvar_FindVar (var_name);
    if (!var)
        return cvar_null_string;
    return var->string;
}


/*
============
Cvar_CompleteVariable
============
*/
char *Cvar_CompleteVariable (char *partial)
{
    cvar_t        *cvar;
    int            len;

    len = Q_strlen(partial);

    if (!len)
        return NULL;

    // check exact match
    for (cvar=cvar_vars ; cvar ; cvar=cvar->next)
        if (!strcmp (partial,cvar->name))
            return cvar->name;

    // check partial match
    for (cvar=cvar_vars ; cvar ; cvar=cvar->next)
        if (!Q_strncmp (partial,cvar->name, len))
            return cvar->name;

    return NULL;
}


#ifdef SERVERONLY
void SV_SendServerInfoChange(char *key, char *value);
#endif

/*
============
Cvar_Set
============
*/
void Cvar_Set (char *var_name, char *value)
{
    cvar_t    *var;

    var = Cvar_FindVar (var_name);
    if (!var)
    {    // there is an error in C code if this happens
        Con_Printf ("Cvar_Set: variable %s not found\n", var_name);
        return;
    }

#ifdef SERVERONLY
    if (var->info)
    {
        Info_SetValueForKey (svs.info, var_name, value, MAX_SERVERINFO_STRING);
        SV_SendServerInfoChange(var_name, value);
//        SV_BroadcastCommand ("fullserverinfo \"%s\"\n", svs.info);
    }
#else
    if (var->info)
    {
        Info_SetValueForKey (cls.userinfo, var_name, value, MAX_INFO_STRING);
        if (cls.state >= ca_connected)
        {
            MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
            SZ_Print (&cls.netchan.message, va("setinfo \"%s\" \"%s\"\n", var_name, value));
        }
    }
#endif

    Z_Free (var->string);    // free the old value string

    var->string = Z_Malloc (Q_strlen(value)+1);
    Q_strcpy (var->string, value);
    var->value = Q_atof (var->string);
}

/*
============
Cvar_SetValue
============
*/
void Cvar_SetValue (char *var_name, float value)
{
    char    val[32];

    sprintf (val, "%f",value);
    Cvar_Set (var_name, val);
}


/*
============
Cvar_RegisterVariable

Adds a freestanding variable to the variable list.
============
*/
void Cvar_RegisterVariable (cvar_t *variable)
{
    char    value[512];

// first check to see if it has allready been defined
    if (Cvar_FindVar (variable->name))
    {
        Con_Printf ("Can't register variable %s, allready defined\n", variable->name);
        return;
    }

// check for overlap with a command
    if (Cmd_Exists (variable->name))
    {
        Con_Printf ("Cvar_RegisterVariable: %s is a command\n", variable->name);
        return;
    }

// link the variable in
    variable->next = cvar_vars;
    cvar_vars = variable;

// copy the value off, because future sets will Z_Free it
    strcpy (value, variable->string);
    variable->string = Z_Malloc (1);

// set it through the function to be consistant
    Cvar_Set (variable->name, value);
}

/*
============
Cvar_Command

Handles variable inspection and changing from the console
============
*/
qboolean    Cvar_Command (void)
{
    cvar_t            *v;

// check variables
    v = Cvar_FindVar (Cmd_Argv(0));
    if (!v)
        return false;

// perform a variable print or set
    if (Cmd_Argc() == 1)
    {
        Con_Printf ("\"%s\" is \"%s\"\n", v->name, v->string);
        return true;
    }

    Cvar_Set (v->name, Cmd_Argv(1));
    return true;
}


/*
============
Cvar_WriteVariables

Writes lines containing "set variable value" for all variables
with the archive flag set to true.
============
*/
void Cvar_WriteVariables (FILE *f)
{
    cvar_t    *var;

    for (var = cvar_vars ; var ; var = var->next)
        if (var->archive)
            fprintf (f, "%s \"%s\"\n", var->name, var->string);
}