dxx-rebirth/main/config.c

/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
*/

/*
 *
 * contains routine(s) to read in the configuration file which contains
 * game configuration stuff like detail level, sound card, etc
 *
 */

#ifdef HAVE_CONFIG_H
#include <conf.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#if !(defined(__APPLE__) && defined(__MACH__))
#include <physfs.h>
#else
#include <physfs/physfs.h>
#endif
#include "config.h"
#include "pstypes.h"
#include "game.h"
#include "menu.h"
#include "movie.h"
#include "digi.h"
#include "kconfig.h"
#include "palette.h"
#include "joy.h"
#include "songs.h"
#include "args.h"
#include "player.h"
#include "mission.h"
#include "physfsx.h"

struct Cfg GameCfg;

ubyte Config_joystick_sensitivity = 8;

static char *DigiVolumeStr = "DigiVolume";
static char *MidiVolumeStr = "MidiVolume";
static char *RedbookVolumeStr = "RedbookVolume";
static char *ReverseStereoStr = "ReverseStereo";
static char *GammaLevelStr = "GammaLevel";
static char *LastPlayerStr = "LastPlayer";
static char *LastMissionStr = "LastMission";
static char *ResolutionXStr="ResolutionX";
static char *ResolutionYStr="ResolutionY";
static char *AspectXStr="AspectX";
static char *AspectYStr="AspectY";
static char *WindowModeStr="WindowMode";
static char *TexFiltStr="TexFilt";

int ReadConfigFile()
{
	PHYSFS_file *infile;
	char line[80], *token, *value, *ptr;

	// set defaults
	GameCfg.DigiVolume = 8;
	GameCfg.MidiVolume = 8;
	GameCfg.RedbookVolume = 8;
	GameCfg.ReverseStereo = 0;
	GameCfg.GammaLevel = 0;
	memset(GameCfg.LastPlayer,0,CALLSIGN_LEN+1);
	memset(GameCfg.LastMission,0,MISSION_NAME_LEN+1);
	GameCfg.ResolutionX = 640;
	GameCfg.ResolutionY = 480;
	GameCfg.AspectX = 3;
	GameCfg.AspectY = 4;
	GameCfg.WindowMode = 0;
	GameCfg.TexFilt = 0;

	infile = PHYSFSX_openReadBuffered("descent.cfg");

	if (infile == NULL) {
		return 1;
	}

	while (!PHYSFS_eof(infile))
	{
		memset(line, 0, 80);
		PHYSFSX_gets(infile, line);
		ptr = &(line[0]);
		while (isspace(*ptr))
			ptr++;
		if (*ptr != '\0') {
			token = strtok(ptr, "=");
			value = strtok(NULL, "=");
			if (!value)
				value = "";
			if (!strcmp(token, DigiVolumeStr))
				GameCfg.DigiVolume = strtol(value, NULL, 10);
			else if (!strcmp(token, MidiVolumeStr))
				GameCfg.MidiVolume = strtol(value, NULL, 10);
			else if (!strcmp(token, RedbookVolumeStr))
				GameCfg.RedbookVolume = strtol(value, NULL, 10);
			else if (!strcmp(token, ReverseStereoStr))
				GameCfg.ReverseStereo = strtol(value, NULL, 10);
			else if (!strcmp(token, GammaLevelStr)) {
				GameCfg.GammaLevel = strtol(value, NULL, 10);
				gr_palette_set_gamma( GameCfg.GammaLevel );
			}
			else if (!strcmp(token, LastPlayerStr))	{
				char * p;
				strncpy( GameCfg.LastPlayer, value, CALLSIGN_LEN );
				p = strchr( GameCfg.LastPlayer, '\n');
				if ( p ) *p = 0;
			}
			else if (!strcmp(token, LastMissionStr))	{
				char * p;
				strncpy( GameCfg.LastMission, value, MISSION_NAME_LEN );
				p = strchr( GameCfg.LastMission, '\n');
				if ( p ) *p = 0;
			}
			else if (!strcmp(token, ResolutionXStr))
				GameCfg.ResolutionX = strtol(value, NULL, 10);
			else if (!strcmp(token, ResolutionYStr))
				GameCfg.ResolutionY = strtol(value, NULL, 10);
			else if (!strcmp(token, AspectXStr))
				GameCfg.AspectX = strtol(value, NULL, 10);
			else if (!strcmp(token, AspectYStr))
				GameCfg.AspectY = strtol(value, NULL, 10);
			else if (!strcmp(token, WindowModeStr))
				GameCfg.WindowMode = strtol(value, NULL, 10);
			else if (!strcmp(token, TexFiltStr))
				GameCfg.TexFilt = strtol(value, NULL, 10);
		}
	}

	PHYSFS_close(infile);

	if ( GameCfg.DigiVolume > 8 ) GameCfg.DigiVolume = 8;
	if ( GameCfg.MidiVolume > 8 ) GameCfg.MidiVolume = 8;
	if ( GameCfg.RedbookVolume > 8 ) GameCfg.RedbookVolume = 8;

	digi_set_volume( (GameCfg.DigiVolume*32768)/8, (GameCfg.MidiVolume*128)/8 );

	if (GameCfg.ResolutionX >= 320 && GameCfg.ResolutionY >= 200)
		Game_screen_mode = SM(GameCfg.ResolutionX,GameCfg.ResolutionY);

	return 0;
}

int WriteConfigFile()
{
	PHYSFS_file *infile;

	GameCfg.GammaLevel = gr_palette_get_gamma();
	
	infile = PHYSFSX_openWriteBuffered("descent.cfg");

	if (infile == NULL) {
		return 1;
	}

	PHYSFSX_printf(infile, "%s=%d\n", DigiVolumeStr, GameCfg.DigiVolume);
	PHYSFSX_printf(infile, "%s=%d\n", MidiVolumeStr, GameCfg.MidiVolume);
	PHYSFSX_printf(infile, "%s=%d\n", RedbookVolumeStr, GameCfg.RedbookVolume);
	PHYSFSX_printf(infile, "%s=%d\n", ReverseStereoStr, GameCfg.ReverseStereo);
	PHYSFSX_printf(infile, "%s=%d\n", GammaLevelStr, GameCfg.GammaLevel);
	PHYSFSX_printf(infile, "%s=%s\n", LastPlayerStr, Players[Player_num].callsign );
	PHYSFSX_printf(infile, "%s=%s\n", LastMissionStr, GameCfg.LastMission );
	PHYSFSX_printf(infile, "%s=%i\n", ResolutionXStr, SM_W(Game_screen_mode));
	PHYSFSX_printf(infile, "%s=%i\n", ResolutionYStr, SM_H(Game_screen_mode));
	PHYSFSX_printf(infile, "%s=%i\n", AspectXStr, GameCfg.AspectX);
	PHYSFSX_printf(infile, "%s=%i\n", AspectYStr, GameCfg.AspectY);
	PHYSFSX_printf(infile, "%s=%i\n", WindowModeStr, GameCfg.WindowMode);
	PHYSFSX_printf(infile, "%s=%i\n", TexFiltStr, GameCfg.TexFilt);

	PHYSFS_close(infile);

	return 0;
}