ref: 4cb20a815b8e763ecc30e882e3ec695452e2b835
dir: /src/m_config.c/
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005 Simon Howard
//
// 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.
//
// DESCRIPTION:
// Configuration file interface.
//
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include "config.h"
#include "doomtype.h"
#include "doomkeys.h"
#include "doomfeatures.h"
#include "i_system.h"
#include "m_argv.h"
#include "m_misc.h"
#include "z_zone.h"
//
// DEFAULTS
//
// Location where all configuration data is stored -
// default.cfg, savegames, etc.
char *configdir;
// Default filenames for configuration files.
static char *default_main_config;
static char *default_extra_config;
typedef enum
{
DEFAULT_INT,
DEFAULT_STRING,
DEFAULT_FLOAT,
DEFAULT_KEY,
} default_type_t;
typedef struct
{
// Name of the variable
char *name;
// Pointer to the location in memory of the variable
void *location;
// Type of the variable
default_type_t type;
// If this is a key value, the original integer scancode we read from
// the config file before translating it to the internal key value.
// If zero, we didn't read this value from a config file.
int untranslated;
// The value we translated the scancode into when we read the
// config file on startup. If the variable value is different from
// this, it has been changed and needs to be converted; otherwise,
// use the 'untranslated' value.
int original_translated;
// If true, this config variable has been bound to a variable
// and is being used.
boolean bound;
} default_t;
typedef struct
{
default_t *defaults;
int numdefaults;
char *filename;
} default_collection_t;
#define CONFIG_VARIABLE_KEY(name) \
{ #name, NULL, DEFAULT_KEY, 0, 0, false }
#define CONFIG_VARIABLE_INT(name) \
{ #name, NULL, DEFAULT_INT, 0, 0, false }
#define CONFIG_VARIABLE_FLOAT(name) \
{ #name, NULL, DEFAULT_FLOAT, 0, 0, false }
#define CONFIG_VARIABLE_STRING(name) \
{ #name, NULL, DEFAULT_STRING, 0, 0, false }
//! @begin_config_file default.cfg
static default_t doom_defaults_list[] =
{
//!
// Mouse sensitivity. This value is used to multiply input mouse
// movement to control the effect of moving the mouse.
//
// The "normal" maximum value available for this through the
// in-game options menu is 9. A value of 31 or greater will cause
// the game to crash when entering the options menu.
//
CONFIG_VARIABLE_INT(mouse_sensitivity),
//!
// Volume of sound effects, range 0-15.
//
CONFIG_VARIABLE_INT(sfx_volume),
//!
// Volume of in-game music, range 0-15.
//
CONFIG_VARIABLE_INT(music_volume),
//!
// If non-zero, messages are displayed on the heads-up display
// in the game ("picked up a clip", etc). If zero, these messages
// are not displayed.
//
CONFIG_VARIABLE_INT(show_messages),
//!
// Keyboard key to turn right.
//
CONFIG_VARIABLE_KEY(key_right),
//!
// Keyboard key to turn left.
//
CONFIG_VARIABLE_KEY(key_left),
//!
// Keyboard key to move forward.
//
CONFIG_VARIABLE_KEY(key_up),
//!
// Keyboard key to move backward.
//
CONFIG_VARIABLE_KEY(key_down),
//!
// Keyboard key to strafe left.
//
CONFIG_VARIABLE_KEY(key_strafeleft),
//!
// Keyboard key to strafe right.
//
CONFIG_VARIABLE_KEY(key_straferight),
//!
// Keyboard key to jump.
//
CONFIG_VARIABLE_KEY(key_jump),
//!
// Keyboard key to fly upward.
//
CONFIG_VARIABLE_KEY(key_flyup),
//!
// Keyboard key to fly downwards.
//
CONFIG_VARIABLE_KEY(key_flydown),
//!
// Keyboard key to center flying.
//
CONFIG_VARIABLE_KEY(key_flycenter),
//!
// Keyboard key to look up.
//
CONFIG_VARIABLE_KEY(key_lookup),
//!
// Keyboard key to look down.
//
CONFIG_VARIABLE_KEY(key_lookdown),
//!
// Keyboard key to center the view.
//
CONFIG_VARIABLE_KEY(key_lookcenter),
//!
// Keyboard key to scroll left in the inventory.
//
CONFIG_VARIABLE_KEY(key_invleft),
//!
// Keyboard key to scroll right in the inventory.
//
CONFIG_VARIABLE_KEY(key_invright),
//!
// Keyboard key to use the current item in the inventory.
//
CONFIG_VARIABLE_KEY(key_useartifact),
//!
// Keyboard key to fire the currently selected weapon.
//
CONFIG_VARIABLE_KEY(key_fire),
//!
// Keyboard key to "use" an object, eg. a door or switch.
//
CONFIG_VARIABLE_KEY(key_use),
//!
// Keyboard key to turn on strafing. When held down, pressing the
// key to turn left or right causes the player to strafe left or
// right instead.
//
CONFIG_VARIABLE_KEY(key_strafe),
//!
// Keyboard key to make the player run.
//
CONFIG_VARIABLE_KEY(key_speed),
//!
// If non-zero, mouse input is enabled. If zero, mouse input is
// disabled.
//
CONFIG_VARIABLE_INT(use_mouse),
//!
// Mouse button to fire the currently selected weapon.
//
CONFIG_VARIABLE_INT(mouseb_fire),
//!
// Mouse button to turn on strafing. When held down, the player
// will strafe left and right instead of turning left and right.
//
CONFIG_VARIABLE_INT(mouseb_strafe),
//!
// Mouse button to move forward.
//
CONFIG_VARIABLE_INT(mouseb_forward),
//!
// Mouse button to jump.
//
CONFIG_VARIABLE_INT(mouseb_jump),
//!
// If non-zero, joystick input is enabled.
//
CONFIG_VARIABLE_INT(use_joystick),
//!
// Joystick button to fire the current weapon.
//
CONFIG_VARIABLE_INT(joyb_fire),
//!
// Joystick button to fire the current weapon.
//
CONFIG_VARIABLE_INT(joyb_strafe),
//!
// Joystick button to "use" an object, eg. a door or switch.
//
CONFIG_VARIABLE_INT(joyb_use),
//!
// Joystick button to make the player run.
//
// If this has a value of 20 or greater, the player will always run.
//
CONFIG_VARIABLE_INT(joyb_speed),
//!
// Joystick button to jump.
//
CONFIG_VARIABLE_INT(joyb_jump),
//!
// Screen size, range 3-11.
//
// A value of 11 gives a full-screen view with the status bar not
// displayed. A value of 10 gives a full-screen view with the
// status bar displayed.
//
CONFIG_VARIABLE_INT(screenblocks),
//!
// Screen detail. Zero gives normal "high detail" mode, while
// a non-zero value gives "low detail" mode.
//
CONFIG_VARIABLE_INT(detaillevel),
//!
// Number of sounds that will be played simultaneously.
//
CONFIG_VARIABLE_INT(snd_channels),
//!
// Music output device. A non-zero value gives MIDI sound output,
// while a value of zero disables music.
//
CONFIG_VARIABLE_INT(snd_musicdevice),
//!
// Sound effects device. A value of zero disables in-game sound
// effects, a value of 1 enables PC speaker sound effects, while
// a value in the range 2-9 enables the "normal" digital sound
// effects.
//
CONFIG_VARIABLE_INT(snd_sfxdevice),
//!
// SoundBlaster I/O port. Unused.
//
CONFIG_VARIABLE_INT(snd_sbport),
//!
// SoundBlaster IRQ. Unused.
//
CONFIG_VARIABLE_INT(snd_sbirq),
//!
// SoundBlaster DMA channel. Unused.
//
CONFIG_VARIABLE_INT(snd_sbdma),
//!
// Output port to use for OPL MIDI playback. Unused.
//
CONFIG_VARIABLE_INT(snd_mport),
//!
// Gamma correction level. A value of zero disables gamma
// correction, while a value in the range 1-4 gives increasing
// levels of gamma correction.
//
CONFIG_VARIABLE_INT(usegamma),
//!
// Directory in which to store savegames.
//
CONFIG_VARIABLE_STRING(savedir),
//!
// Controls whether messages are displayed in the heads-up display.
// If this has a non-zero value, messages are displayed.
//
CONFIG_VARIABLE_INT(messageson),
//!
// Multiplayer chat macro: message to send when alt+0 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro0),
//!
// Multiplayer chat macro: message to send when alt+1 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro1),
//!
// Multiplayer chat macro: message to send when alt+2 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro2),
//!
// Multiplayer chat macro: message to send when alt+3 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro3),
//!
// Multiplayer chat macro: message to send when alt+4 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro4),
//!
// Multiplayer chat macro: message to send when alt+5 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro5),
//!
// Multiplayer chat macro: message to send when alt+6 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro6),
//!
// Multiplayer chat macro: message to send when alt+7 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro7),
//!
// Multiplayer chat macro: message to send when alt+8 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro8),
//!
// Multiplayer chat macro: message to send when alt+9 is pressed.
//
CONFIG_VARIABLE_STRING(chatmacro9),
};
static default_collection_t doom_defaults =
{
doom_defaults_list,
arrlen(doom_defaults_list),
NULL,
};
//! @begin_config_file chocolate-doom.cfg
static default_t extra_defaults_list[] =
{
//!
// If non-zero, video settings will be autoadjusted to a valid
// configuration when the screen_width and screen_height variables
// do not match any valid configuration.
//
CONFIG_VARIABLE_INT(autoadjust_video_settings),
//!
// If non-zero, the game will run in full screen mode. If zero,
// the game will run in a window.
//
CONFIG_VARIABLE_INT(fullscreen),
//!
// If non-zero, the screen will be stretched vertically to display
// correctly on a square pixel video mode.
//
CONFIG_VARIABLE_INT(aspect_ratio_correct),
//!
// Number of milliseconds to wait on startup after the video mode
// has been set, before the game will start. This allows the
// screen to settle on some monitors that do not display an image
// for a brief interval after changing video modes.
//
CONFIG_VARIABLE_INT(startup_delay),
//!
// Screen width in pixels. If running in full screen mode, this is
// the X dimension of the video mode to use. If running in
// windowed mode, this is the width of the window in which the game
// will run.
//
CONFIG_VARIABLE_INT(screen_width),
//!
// Screen height in pixels. If running in full screen mode, this is
// the Y dimension of the video mode to use. If running in
// windowed mode, this is the height of the window in which the game
// will run.
//
CONFIG_VARIABLE_INT(screen_height),
//!
// If this is non-zero, the mouse will be "grabbed" when running
// in windowed mode so that it can be used as an input device.
// When running full screen, this has no effect.
//
CONFIG_VARIABLE_INT(grabmouse),
//!
// If non-zero, all vertical mouse movement is ignored. This
// emulates the behavior of the "novert" tool available under DOS
// that performs the same function.
//
CONFIG_VARIABLE_INT(novert),
//!
// Mouse acceleration factor. When the speed of mouse movement
// exceeds the threshold value (mouse_threshold), the speed is
// multiplied by this value.
//
CONFIG_VARIABLE_FLOAT(mouse_acceleration),
//!
// Mouse acceleration threshold. When the speed of mouse movement
// exceeds this threshold value, the speed is multiplied by an
// acceleration factor (mouse_acceleration).
//
CONFIG_VARIABLE_INT(mouse_threshold),
//!
// Sound output sample rate, in Hz. Typical values to use are
// 11025, 22050, 44100 and 48000.
//
CONFIG_VARIABLE_INT(snd_samplerate),
//!
// If non-zero, the ENDOOM screen is displayed when exiting the
// game. If zero, the ENDOOM screen is not displayed.
//
CONFIG_VARIABLE_INT(show_endoom),
//!
// If non-zero, the Vanilla savegame limit is enforced; if the
// savegame exceeds 180224 bytes in size, the game will exit with
// an error. If this has a value of zero, there is no limit to
// the size of savegames.
//
CONFIG_VARIABLE_INT(vanilla_savegame_limit),
//!
// If non-zero, the Vanilla demo size limit is enforced; the game
// exits with an error when a demo exceeds the demo size limit
// (128KiB by default). If this has a value of zero, there is no
// limit to the size of demos.
//
CONFIG_VARIABLE_INT(vanilla_demo_limit),
//!
// If non-zero, the game behaves like Vanilla Doom, always assuming
// an American keyboard mapping. If this has a value of zero, the
// native keyboard mapping of the keyboard is used.
//
CONFIG_VARIABLE_INT(vanilla_keyboard_mapping),
//!
// Name of the SDL video driver to use. If this is an empty string,
// the default video driver is used.
//
CONFIG_VARIABLE_STRING(video_driver),
#ifdef FEATURE_MULTIPLAYER
//!
// Name to use in network games for identification. This is only
// used on the "waiting" screen while waiting for the game to start.
//
CONFIG_VARIABLE_STRING(player_name),
#endif
//!
// Joystick number to use; '0' is the first joystick. A negative
// value ('-1') indicates that no joystick is configured.
//
CONFIG_VARIABLE_INT(joystick_index),
//!
// Joystick axis to use to for horizontal (X) movement.
//
CONFIG_VARIABLE_INT(joystick_x_axis),
//!
// If non-zero, movement on the horizontal joystick axis is inverted.
//
CONFIG_VARIABLE_INT(joystick_x_invert),
//!
// Joystick axis to use to for vertical (Y) movement.
//
CONFIG_VARIABLE_INT(joystick_y_axis),
//!
// If non-zero, movement on the vertical joystick axis is inverted.
//
CONFIG_VARIABLE_INT(joystick_y_invert),
//!
// Joystick button to strafe left.
//
CONFIG_VARIABLE_INT(joyb_strafeleft),
//!
// Joystick button to strafe right.
//
CONFIG_VARIABLE_INT(joyb_straferight),
//!
// Mouse button to strafe left.
//
CONFIG_VARIABLE_INT(mouseb_strafeleft),
//!
// Mouse button to strafe right.
//
CONFIG_VARIABLE_INT(mouseb_straferight),
//!
// Mouse button to "use" an object, eg. a door or switch.
//
CONFIG_VARIABLE_INT(mouseb_use),
//!
// Mouse button to move backwards.
//
CONFIG_VARIABLE_INT(mouseb_backward),
//!
// If non-zero, double-clicking a mouse button acts like pressing
// the "use" key to use an object in-game, eg. a door or switch.
//
CONFIG_VARIABLE_INT(dclick_use),
//!
// Controls whether libsamplerate support is used for performing
// sample rate conversions of sound effects. Support for this
// must be compiled into the program.
//
// If zero, libsamplerate support is disabled. If non-zero,
// libsamplerate is enabled. Increasing values roughly correspond
// to higher quality conversion; the higher the quality, the
// slower the conversion process. Linear conversion = 1;
// Zero order hold = 2; Fast Sinc filter = 3; Medium quality
// Sinc filter = 4; High quality Sinc filter = 5.
//
CONFIG_VARIABLE_INT(use_libsamplerate),
};
static default_collection_t extra_defaults =
{
extra_defaults_list,
arrlen(extra_defaults_list),
NULL,
};
// Search a collection for a variable
static default_t *SearchCollection(default_collection_t *collection, char *name)
{
int i;
for (i=0; i<collection->numdefaults; ++i)
{
if (!strcmp(name, collection->defaults[i].name))
{
return &collection->defaults[i];
}
}
return NULL;
}
static const int scantokey[128] =
{
0 , 27, '1', '2', '3', '4', '5', '6',
'7', '8', '9', '0', '-', '=', KEY_BACKSPACE, 9,
'q', 'w', 'e', 'r', 't', 'y', 'u', 'i',
'o', 'p', '[', ']', 13, KEY_RCTRL, 'a', 's',
'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',
'\'', '`', KEY_RSHIFT,'\\', 'z', 'x', 'c', 'v',
'b', 'n', 'm', ',', '.', '/', KEY_RSHIFT,KEYP_MULTIPLY,
KEY_RALT, ' ', KEY_CAPSLOCK,KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5,
KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_PAUSE,KEY_SCRLCK,KEY_HOME,
KEY_UPARROW,KEY_PGUP,KEY_MINUS,KEY_LEFTARROW,KEYP_5,KEY_RIGHTARROW,KEYP_PLUS,KEY_END,
KEY_DOWNARROW,KEY_PGDN,KEY_INS,KEY_DEL,0, 0, 0, KEY_F11,
KEY_F12, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0
};
static void SaveDefaultCollection(default_collection_t *collection)
{
default_t *defaults;
int i, v;
FILE *f;
f = fopen (collection->filename, "w");
if (!f)
return; // can't write the file, but don't complain
defaults = collection->defaults;
for (i=0 ; i<collection->numdefaults ; i++)
{
int chars_written;
// Ignore unbound variables
if (!defaults[i].bound)
{
continue;
}
// Print the name and line up all values at 30 characters
chars_written = fprintf(f, "%s ", defaults[i].name);
for (; chars_written < 30; ++chars_written)
fprintf(f, " ");
// Print the value
switch (defaults[i].type)
{
case DEFAULT_KEY:
// use the untranslated version if we can, to reduce
// the possibility of screwing up the user's config
// file
v = * (int *) defaults[i].location;
if (defaults[i].untranslated
&& v == defaults[i].original_translated)
{
// Has not been changed since the last time we
// read the config file.
v = defaults[i].untranslated;
}
else
{
// search for a reverse mapping back to a scancode
// in the scantokey table
int s;
for (s=0; s<128; ++s)
{
if (scantokey[s] == v)
{
v = s;
break;
}
}
}
fprintf(f, "%i", v);
break;
case DEFAULT_INT:
fprintf(f, "%i", * (int *) defaults[i].location);
break;
case DEFAULT_FLOAT:
fprintf(f, "%f", * (float *) defaults[i].location);
break;
case DEFAULT_STRING:
fprintf(f,"\"%s\"", * (char **) (defaults[i].location));
break;
}
fprintf(f, "\n");
}
fclose (f);
}
// Parses integer values in the configuration file
static int ParseIntParameter(char *strparm)
{
int parm;
if (strparm[0] == '0' && strparm[1] == 'x')
sscanf(strparm+2, "%x", &parm);
else
sscanf(strparm, "%i", &parm);
return parm;
}
static void LoadDefaultCollection(default_collection_t *collection)
{
default_t *def;
FILE *f;
char defname[80];
char strparm[100];
char *s;
int intparm;
// read the file in, overriding any set defaults
f = fopen(collection->filename, "r");
if (f == NULL)
{
// File not opened, but don't complain.
// It's probably just the first time they ran the game.
return;
}
while (!feof(f))
{
if (fscanf (f, "%79s %[^\n]\n", defname, strparm) != 2)
{
// This line doesn't match
continue;
}
// Strip off trailing non-printable characters (\r characters
// from DOS text files)
while (strlen(strparm) > 0 && !isprint(strparm[strlen(strparm)-1]))
{
strparm[strlen(strparm)-1] = '\0';
}
// Find the setting in the list
def = SearchCollection(collection, defname);
if (def == NULL || !def->bound)
{
// Unknown variable? Unbound variables are also treated
// as unknown.
continue;
}
// parameter found
switch (def->type)
{
case DEFAULT_STRING:
s = strdup(strparm + 1);
s[strlen(s) - 1] = '\0';
* (char **) def->location = s;
break;
case DEFAULT_INT:
* (int *) def->location = ParseIntParameter(strparm);
break;
case DEFAULT_KEY:
// translate scancodes read from config
// file (save the old value in untranslated)
intparm = ParseIntParameter(strparm);
def->untranslated = intparm;
intparm = scantokey[intparm];
def->original_translated = intparm;
* (int *) def->location = intparm;
break;
case DEFAULT_FLOAT:
* (float *) def->location = (float) atof(strparm);
break;
}
}
fclose (f);
}
// Set the default filenames to use for configuration files.
void M_SetConfigFilenames(char *main_config, char *extra_config)
{
default_main_config = main_config;
default_extra_config = extra_config;
}
//
// M_SaveDefaults
//
void M_SaveDefaults (void)
{
SaveDefaultCollection(&doom_defaults);
SaveDefaultCollection(&extra_defaults);
}
//
// M_LoadDefaults
//
void M_LoadDefaults (void)
{
int i;
// check for a custom default file
//!
// @arg <file>
// @vanilla
//
// Load configuration from the specified file. The default
// configuration file (for Doom) is named default.cfg.
//
i = M_CheckParm ("-config");
if (i && i<myargc-1)
{
doom_defaults.filename = myargv[i+1];
printf (" default file: %s\n",doom_defaults.filename);
}
else
{
doom_defaults.filename
= malloc(strlen(configdir) + strlen(default_main_config) + 1);
sprintf(doom_defaults.filename, "%s%s", configdir, default_main_config);
}
printf("saving config in %s\n", doom_defaults.filename);
//!
// @arg <file>
//
// Load extra configuration from the specified file. The default
// configuration file for Doom is named chocolate-doom.cfg.
//
i = M_CheckParm("-extraconfig");
if (i && i<myargc-1)
{
extra_defaults.filename = myargv[i+1];
printf(" extra configuration file: %s\n",
extra_defaults.filename);
}
else
{
extra_defaults.filename
= malloc(strlen(configdir) + strlen(default_extra_config) + 1);
sprintf(extra_defaults.filename, "%s%s",
configdir, default_extra_config);
}
LoadDefaultCollection(&doom_defaults);
LoadDefaultCollection(&extra_defaults);
}
// Get a configuration file variable by its name
static default_t *GetDefaultForName(char *name)
{
default_t *result;
// Try the main list and the extras
result = SearchCollection(&doom_defaults, name);
if (result == NULL)
{
result = SearchCollection(&extra_defaults, name);
}
// Not found? Internal error.
if (result == NULL)
{
I_Error("Unknown configuration variable: '%s'", name);
}
return result;
}
//
// Bind a variable to a given configuration file variable, by name.
//
void M_BindVariable(char *name, void *location)
{
default_t *variable;
variable = GetDefaultForName(name);
variable->location = location;
variable->bound = true;
}
//
// SetConfigDir:
//
// Sets the location of the configuration directory, where configuration
// files are stored - default.cfg, chocolate-doom.cfg, savegames, etc.
//
void M_SetConfigDir(void)
{
#ifndef _WIN32
// Ignore the HOME environment variable on Windows - just behave
// like Vanilla Doom.
char *homedir;
homedir = getenv("HOME");
if (homedir != NULL)
{
// put all configuration in a config directory off the
// homedir
configdir = malloc(strlen(homedir) + strlen(PACKAGE_TARNAME) + 5);
sprintf(configdir, "%s%c.%s%c", homedir, DIR_SEPARATOR,
PACKAGE_TARNAME, DIR_SEPARATOR);
// make the directory if it doesnt already exist
M_MakeDirectory(configdir);
}
else
#endif /* #ifndef _WIN32 */
{
#ifdef _WIN32
//!
// @platform windows
// @vanilla
//
// Save configuration data and savegames in c:\doomdata,
// allowing play from CD.
//
if (M_CheckParm("-cdrom") > 0)
{
printf(D_CDROM);
configdir = strdup("c:\\doomdata\\");
M_MakeDirectory(configdir);
}
else
#endif
{
configdir = strdup("");
}
}
}