ref: af3e4412d301cc27e04c352c0283ce6861f33f0c
dir: /setup/configfile.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 load/save code.
//
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
// for mkdir:
#ifdef _WIN32
#include <io.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else
#include <sys/stat.h>
#include <sys/types.h>
#endif
#include "SDL_mixer.h"
#include "config.h"
#include "doomfeatures.h"
#include "doomkeys.h"
#include "doomtype.h"
#include "d_englsh.h"
#include "m_argv.h"
#include "compatibility.h"
#include "display.h"
#include "joystick.h"
#include "keyboard.h"
#include "mouse.h"
#include "multiplayer.h"
#include "sound.h"
char *configdir;
//
// Create a directory
//
void M_MakeDirectory(char *path)
{
#ifdef _WIN32
mkdir(path);
#else
mkdir(path, 0755);
#endif
}
//
// M_SetConfigDir:
//
// Sets the location of the configuration directory, where configuration
// files are stored - default.cfg, chocolate-doom.cfg, savegames, etc.
//
void M_SetConfigDir(void)
{
#if !defined(_WIN32) || defined(_WIN32_WCE)
// Configuration settings are stored in ~/.chocolate-doom/,
// except on Windows, where we behave like Vanilla Doom and
// save in the current directory.
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 */
{
#if defined(_WIN32) && !defined(_WIN32_WCE)
// when given the -cdrom option, save config+savegames in
// c:\doomdata. This only applies under Windows.
if (M_CheckParm("-cdrom") > 0)
{
printf(D_CDROM);
configdir = strdup("c:\\doomdata\\");
M_MakeDirectory(configdir);
}
else
#endif
{
configdir = strdup("");
}
}
}
//
// DEFAULTS
//
// These are options that are not controlled by setup.
static int showMessages = 1;
static int screenblocks = 9;
static int detailLevel = 0;
static int usegamma = 0;
// dos specific options: these are unused but should be maintained
// so that the config file can be shared between chocolate
// doom and doom.exe
static int snd_sbport = 0;
static int snd_sbirq = 0;
static int snd_sbdma = 0;
static int snd_mport = 0;
typedef enum
{
DEFAULT_INT,
DEFAULT_INT_HEX,
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;
} default_t;
typedef struct
{
default_t *defaults;
int numdefaults;
char *filename;
} default_collection_t;
static default_t doom_defaults_list[] =
{
{"mouse_sensitivity", &mouseSensitivity, DEFAULT_INT, 0, 0},
{"sfx_volume",&sfxVolume, DEFAULT_INT, 0, 0},
{"music_volume",&musicVolume, DEFAULT_INT, 0, 0},
{"show_messages",&showMessages, DEFAULT_INT, 0, 0},
{"key_right",&key_right, DEFAULT_KEY, 0, 0},
{"key_left",&key_left, DEFAULT_KEY, 0, 0},
{"key_up",&key_up, DEFAULT_KEY, 0, 0},
{"key_down",&key_down, DEFAULT_KEY, 0, 0},
{"key_strafeleft",&key_strafeleft, DEFAULT_KEY, 0, 0},
{"key_straferight",&key_straferight, DEFAULT_KEY, 0, 0},
{"key_fire",&key_fire, DEFAULT_KEY, 0, 0},
{"key_use",&key_use, DEFAULT_KEY, 0, 0},
{"key_strafe",&key_strafe, DEFAULT_KEY, 0, 0},
{"key_speed",&key_speed, DEFAULT_KEY, 0, 0},
{"use_mouse",&usemouse, DEFAULT_INT, 0, 0},
{"mouseb_fire",&mousebfire, DEFAULT_INT, 0, 0},
{"mouseb_strafe",&mousebstrafe, DEFAULT_INT, 0, 0},
{"mouseb_forward",&mousebforward, DEFAULT_INT, 0, 0},
{"use_joystick",&usejoystick, DEFAULT_INT, 0, 0},
{"joyb_fire",&joybfire, DEFAULT_INT, 0, 0},
{"joyb_strafe",&joybstrafe, DEFAULT_INT, 0, 0},
{"joyb_use",&joybuse, DEFAULT_INT, 0, 0},
{"joyb_speed",&joybspeed, DEFAULT_INT, 0, 0},
{"screenblocks",&screenblocks, DEFAULT_INT, 0, 0},
{"detaillevel",&detailLevel, DEFAULT_INT, 0, 0},
{"snd_channels",&numChannels, DEFAULT_INT, 0, 0},
{"snd_musicdevice", &snd_musicdevice, DEFAULT_INT, 0, 0},
{"snd_sfxdevice", &snd_sfxdevice, DEFAULT_INT, 0, 0},
{"snd_sbport", &snd_sbport, DEFAULT_INT, 0, 0},
{"snd_sbirq", &snd_sbirq, DEFAULT_INT, 0, 0},
{"snd_sbdma", &snd_sbdma, DEFAULT_INT, 0, 0},
{"snd_mport", &snd_mport, DEFAULT_INT, 0, 0},
{"usegamma", &usegamma, DEFAULT_INT, 0, 0},
{"chatmacro0", &chat_macros[0], DEFAULT_STRING, 0, 0 },
{"chatmacro1", &chat_macros[1], DEFAULT_STRING, 0, 0 },
{"chatmacro2", &chat_macros[2], DEFAULT_STRING, 0, 0 },
{"chatmacro3", &chat_macros[3], DEFAULT_STRING, 0, 0 },
{"chatmacro4", &chat_macros[4], DEFAULT_STRING, 0, 0 },
{"chatmacro5", &chat_macros[5], DEFAULT_STRING, 0, 0 },
{"chatmacro6", &chat_macros[6], DEFAULT_STRING, 0, 0 },
{"chatmacro7", &chat_macros[7], DEFAULT_STRING, 0, 0 },
{"chatmacro8", &chat_macros[8], DEFAULT_STRING, 0, 0 },
{"chatmacro9", &chat_macros[9], DEFAULT_STRING, 0, 0 },
};
static default_collection_t doom_defaults =
{
doom_defaults_list,
arrlen(doom_defaults_list),
NULL,
};
static default_t extra_defaults_list[] =
{
{"autoadjust_video_settings", &autoadjust_video_settings, DEFAULT_INT, 0, 0},
{"fullscreen", &fullscreen, DEFAULT_INT, 0, 0},
{"aspect_ratio_correct", &aspect_ratio_correct, DEFAULT_INT, 0, 0},
{"startup_delay", &startup_delay, DEFAULT_INT, 0, 0},
{"screen_width", &screen_width, DEFAULT_INT, 0, 0},
{"screen_height", &screen_height, DEFAULT_INT, 0, 0},
{"screen_bpp", &screen_bpp, DEFAULT_INT, 0, 0},
{"grabmouse", &grabmouse, DEFAULT_INT, 0, 0},
{"novert", &novert, DEFAULT_INT, 0, 0},
{"mouse_acceleration", &mouse_acceleration, DEFAULT_FLOAT, 0, 0},
{"mouse_threshold", &mouse_threshold, DEFAULT_INT, 0, 0},
{"snd_samplerate", &snd_samplerate, DEFAULT_INT, 0, 0},
{"opl_io_port", &opl_io_port, DEFAULT_INT_HEX, 0, 0},
{"show_endoom", &show_endoom, DEFAULT_INT, 0, 0},
{"vanilla_savegame_limit", &vanilla_savegame_limit, DEFAULT_INT, 0, 0},
{"vanilla_demo_limit", &vanilla_demo_limit, DEFAULT_INT, 0, 0},
{"vanilla_keyboard_mapping", &vanilla_keyboard_mapping, DEFAULT_INT, 0, 0},
#ifdef FEATURE_MULTIPLAYER
{"player_name", &net_player_name, DEFAULT_STRING, 0, 0},
#endif
{"video_driver", &video_driver, DEFAULT_STRING, 0, 0},
{"joystick_index", &joystick_index, DEFAULT_INT, 0, 0},
{"joystick_x_axis", &joystick_x_axis, DEFAULT_INT, 0, 0},
{"joystick_x_invert", &joystick_x_invert, DEFAULT_INT, 0, 0},
{"joystick_y_axis", &joystick_y_axis, DEFAULT_INT, 0, 0},
{"joystick_y_invert", &joystick_y_invert, DEFAULT_INT, 0, 0},
{"joyb_strafeleft", &joybstrafeleft, DEFAULT_INT, 0, 0},
{"joyb_straferight", &joybstraferight, DEFAULT_INT, 0, 0},
{"joyb_prevweapon", &joybprevweapon, DEFAULT_INT, 0, 0},
{"joyb_nextweapon", &joybnextweapon, DEFAULT_INT, 0, 0},
{"dclick_use", &dclick_use, DEFAULT_INT, 0, 0},
{"mouseb_strafeleft", &mousebstrafeleft, DEFAULT_INT, 0, 0},
{"mouseb_straferight", &mousebstraferight, DEFAULT_INT, 0, 0},
{"mouseb_use", &mousebuse, DEFAULT_INT, 0, 0},
{"mouseb_backward", &mousebbackward, DEFAULT_INT, 0, 0},
{"mouseb_prevweapon", &mousebprevweapon, DEFAULT_INT, 0, 0},
{"mouseb_nextweapon", &mousebnextweapon, DEFAULT_INT, 0, 0},
{"use_libsamplerate", &use_libsamplerate, DEFAULT_INT, 0, 0},
{"key_pause", &key_pause, DEFAULT_KEY, 0, 0},
{"key_menu_activate", &key_menu_activate, DEFAULT_KEY, 0, 0},
{"key_menu_up", &key_menu_up, DEFAULT_KEY, 0, 0},
{"key_menu_down", &key_menu_down, DEFAULT_KEY, 0, 0},
{"key_menu_left", &key_menu_left, DEFAULT_KEY, 0, 0},
{"key_menu_right", &key_menu_right, DEFAULT_KEY, 0, 0},
{"key_menu_back", &key_menu_back, DEFAULT_KEY, 0, 0},
{"key_menu_forward", &key_menu_forward, DEFAULT_KEY, 0, 0},
{"key_menu_confirm", &key_menu_confirm, DEFAULT_KEY, 0, 0},
{"key_menu_abort", &key_menu_abort, DEFAULT_KEY, 0, 0},
{"key_menu_help", &key_menu_help, DEFAULT_KEY, 0, 0},
{"key_menu_save", &key_menu_save, DEFAULT_KEY, 0, 0},
{"key_menu_load", &key_menu_load, DEFAULT_KEY, 0, 0},
{"key_menu_volume", &key_menu_volume, DEFAULT_KEY, 0, 0},
{"key_menu_detail", &key_menu_detail, DEFAULT_KEY, 0, 0},
{"key_menu_qsave", &key_menu_qsave, DEFAULT_KEY, 0, 0},
{"key_menu_endgame", &key_menu_endgame, DEFAULT_KEY, 0, 0},
{"key_menu_messages", &key_menu_messages, DEFAULT_KEY, 0, 0},
{"key_menu_qload", &key_menu_qload, DEFAULT_KEY, 0, 0},
{"key_menu_quit", &key_menu_quit, DEFAULT_KEY, 0, 0},
{"key_menu_gamma", &key_menu_gamma, DEFAULT_KEY, 0, 0},
{"key_spy", &key_spy, DEFAULT_KEY, 0, 0},
{"key_menu_incscreen", &key_menu_incscreen, DEFAULT_KEY, 0, 0},
{"key_menu_decscreen", &key_menu_decscreen, DEFAULT_KEY, 0, 0},
{"key_map_toggle", &key_map_toggle, DEFAULT_KEY, 0, 0},
{"key_map_north", &key_map_north, DEFAULT_KEY, 0, 0},
{"key_map_south", &key_map_south, DEFAULT_KEY, 0, 0},
{"key_map_east", &key_map_east, DEFAULT_KEY, 0, 0},
{"key_map_west", &key_map_west, DEFAULT_KEY, 0, 0},
{"key_map_zoomin", &key_map_zoomin, DEFAULT_KEY, 0, 0},
{"key_map_zoomout", &key_map_zoomout, DEFAULT_KEY, 0, 0},
{"key_map_maxzoom", &key_map_maxzoom, DEFAULT_KEY, 0, 0},
{"key_map_follow", &key_map_follow, DEFAULT_KEY, 0, 0},
{"key_map_grid", &key_map_grid, DEFAULT_KEY, 0, 0},
{"key_map_mark", &key_map_mark, DEFAULT_KEY, 0, 0},
{"key_map_clearmark", &key_map_clearmark, DEFAULT_KEY, 0, 0},
{"key_weapon1", &key_weapon1, DEFAULT_KEY, 0, 0},
{"key_weapon2", &key_weapon2, DEFAULT_KEY, 0, 0},
{"key_weapon3", &key_weapon3, DEFAULT_KEY, 0, 0},
{"key_weapon4", &key_weapon4, DEFAULT_KEY, 0, 0},
{"key_weapon5", &key_weapon5, DEFAULT_KEY, 0, 0},
{"key_weapon6", &key_weapon6, DEFAULT_KEY, 0, 0},
{"key_weapon7", &key_weapon7, DEFAULT_KEY, 0, 0},
{"key_weapon8", &key_weapon8, DEFAULT_KEY, 0, 0},
{"key_prevweapon", &key_prevweapon, DEFAULT_KEY, 0, 0},
{"key_nextweapon", &key_nextweapon, DEFAULT_KEY, 0, 0},
{"key_message_refresh", &key_message_refresh, DEFAULT_KEY, 0, 0},
{"key_demo_quit", &key_demo_quit, DEFAULT_KEY, 0, 0},
{"key_multi_msg", &key_multi_msg, DEFAULT_KEY, 0, 0},
{"key_multi_msgplayer1", &key_multi_msgplayer[0], DEFAULT_KEY, 0, 0},
{"key_multi_msgplayer2", &key_multi_msgplayer[1], DEFAULT_KEY, 0, 0},
{"key_multi_msgplayer3", &key_multi_msgplayer[2], DEFAULT_KEY, 0, 0},
{"key_multi_msgplayer4", &key_multi_msgplayer[3], DEFAULT_KEY, 0, 0},
};
static default_collection_t extra_defaults =
{
extra_defaults_list,
arrlen(extra_defaults_list),
NULL,
};
static 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,KEYP_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;
// 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_HEX:
fprintf(f, "0x%x", * (int *) defaults[i].location);
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 *defaults = collection->defaults;
int i;
FILE* f;
char defname[80];
char strparm[100];
// read the file in, overriding any set defaults
f = fopen(collection->filename, "r");
if (!f)
{
// File not opened, but don't complain
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
for (i=0; i<collection->numdefaults; ++i)
{
default_t *def = &collection->defaults[i];
char *s;
int intparm;
if (strcmp(defname, def->name) != 0)
{
// not this one
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:
case DEFAULT_INT_HEX:
* (int *) def->location = ParseIntParameter(strparm);
break;
case DEFAULT_KEY:
// translate scancodes read from config
// file (save the old value in untranslated)
intparm = ParseIntParameter(strparm);
defaults[i].untranslated = intparm;
if (intparm >= 0 && intparm < 128)
{
intparm = scantokey[intparm];
}
else
{
intparm = 0;
}
defaults[i].original_translated = intparm;
* (int *) def->location = intparm;
break;
case DEFAULT_FLOAT:
* (float *) def->location = atof(strparm);
break;
}
// finish
break;
}
}
fclose (f);
}
//
// 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
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) + 20);
sprintf(doom_defaults.filename, "%sdefault.cfg", configdir);
}
// printf("saving config in %s\n", doom_defaults.filename);
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(PACKAGE_TARNAME) + 10);
sprintf(extra_defaults.filename, "%s%s.cfg",
configdir, PACKAGE_TARNAME);
}
LoadDefaultCollection(&doom_defaults);
LoadDefaultCollection(&extra_defaults);
}
//
// Save normal (default.cfg) defaults to a given file
//
void M_SaveMainDefaults(char *filename)
{
char *main_filename;
// Save the normal filename and set this one
main_filename = doom_defaults.filename;
doom_defaults.filename = filename;
// Save the file
SaveDefaultCollection(&doom_defaults);
// Restore the normal filename
doom_defaults.filename = main_filename;
}
//
// Save extra (chocolate-doom.cfg) defaults to a given file
//
void M_SaveExtraDefaults(char *filename)
{
char *main_filename;
// Save the normal filename and set this one
main_filename = extra_defaults.filename;
extra_defaults.filename = filename;
// Save the file
SaveDefaultCollection(&extra_defaults);
// Restore the normal filename
extra_defaults.filename = main_filename;
}
#ifdef _WIN32_WCE
static int SystemHasKeyboard(void)
{
HKEY key;
DWORD valtype;
DWORD valsize;
DWORD result;
if (RegOpenKeyExW(HKEY_CURRENT_USER,
L"\\Software\\Microsoft\\Shell", 0,
KEY_READ, &key) != ERROR_SUCCESS)
{
return 0;
}
valtype = REG_SZ;
valsize = sizeof(DWORD);
if (RegQueryValueExW(key, L"HasKeyboard", NULL, &valtype,
(LPBYTE) &result, &valsize) != ERROR_SUCCESS)
{
result = 0;
}
// Close the key
RegCloseKey(key);
return result;
}
//
// Apply custom defaults for Windows CE.
//
static void M_ApplyWindowsCEDefaults(void)
{
// If the system doesn't have a keyboard, patch the default
// configuration to use the hardware keys.
if (!SystemHasKeyboard())
{
key_use = KEY_F1;
key_fire = KEY_F2;
key_menu_activate = KEY_F3;
key_map_toggle = KEY_F4;
key_menu_help = 0;
key_menu_save = 0;
key_menu_load = 0;
key_menu_volume = 0;
key_menu_confirm = KEY_ENTER;
key_menu_back = KEY_F2;
key_menu_abort = KEY_F2;
}
}
#endif
//
// Apply custom patches to the default values depending on the
// platform we are running on.
//
void M_ApplyPlatformDefaults(void)
{
#ifdef _WIN32_WCE
M_ApplyWindowsCEDefaults();
#endif
// Before SDL_mixer version 1.2.11, MIDI music caused the game
// to crash when it looped. If this is an old SDL_mixer version,
// disable MIDI.
#ifdef __MACOSX__
{
const SDL_version *v = Mix_Linked_Version();
if (SDL_VERSIONNUM(v->major, v->minor, v->patch)
< SDL_VERSIONNUM(1, 2, 11))
{
snd_musicdevice = SNDDEVICE_NONE;
}
}
#endif
// Windows Vista or later? Set screen color depth to
// 32 bits per pixel, as 8-bit palettized screen modes
// don't work properly in recent versions.
#if defined(_WIN32) && !defined(_WIN32_WCE)
{
OSVERSIONINFOEX version_info;
ZeroMemory(&version_info, sizeof(OSVERSIONINFOEX));
version_info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
GetVersionEx((OSVERSIONINFO *) &version_info);
if (version_info.dwPlatformId == VER_PLATFORM_WIN32_NT
&& version_info.dwMajorVersion >= 6)
{
screen_bpp = 32;
}
}
#endif
}