#include <stdio.h>
#include <stdlib.h> // atof(), atoi()
#include <string.h>
+#include <string>
#include <Debug/fg_debug.h>
-#include <Flight/flight.h>
+#include <Flight/flight.hxx>
#include <Include/fg_constants.h>
-#include <Include/fg_zlib.h>
+#include <Misc/fgstream.hxx>
#include "options.hxx"
+const int fgOPTIONS::FG_RADIUS_MIN;
+const int fgOPTIONS::FG_RADIUS_MAX;
+
+inline double
+atof( const string& str )
+{
+ return ::atof( str.c_str() );
+}
+
+inline int
+atoi( const string& str )
+{
+ return ::atoi( str.c_str() );
+}
// Defined the shared options class here
fgOPTIONS current_options;
// Constructor
-fgOPTIONS::fgOPTIONS( void ) {
- // set initial values/defaults
-
- if ( getenv("FG_ROOT") != NULL ) {
- // fg_root could be anywhere, so default to environmental
- // variable $FG_ROOT if it is set.
-
- strcpy(fg_root, getenv("FG_ROOT"));
- } else {
- // Otherwise, default to a random compiled in location if
- // $FG_ROOT is not set. This can still be overridden from the
- // command line or a config file.
+fgOPTIONS::fgOPTIONS() :
+ // starting longitude in degrees (west = -)
+ // starting latitude in degrees (south = -)
-#if defined(WIN32)
- strcpy(fg_root, "\\FlightGear");
-#else
- strcpy(fg_root, "/usr/local/lib/FlightGear");
-#endif
- }
-
- // Starting posistion and orientation
- strcpy(airport_id, ""); // default airport id
- lon = 0.0; // starting longitude in degrees (west = -)
- lat = 0.0; // starting latitude in degrees (south = -)
-
- // If nothing else is specified, default initial position is
- // Globe, AZ (P13)
- lon = -110.6642444;
- lat = 33.3528917;
+ // Default initial position is Globe, AZ (P13)
+ lon(-110.6642444),
+ lat( 33.3528917),
// North of the city of Globe
- // lon = -110.7;
- // lat = 33.4;
+ // lon(-110.7),
+ // lat( 33.4),
// North of the city of Globe
- // lon = -110.742578;
- // lat = 33.507122;
+ // lon(-110.742578),
+ // lat( 33.507122),
// Near where I used to live in Globe, AZ
- // lon = -110.766000;
- // lat = 33.377778;
+ // lon(-110.766000),
+ // lat( 33.377778),
// 10125 Jewell St. NE
- // lon = -93.15;
- // lat = 45.15;
+ // lon(-93.15),
+ // lat( 45.15),
// Near KHSP (Hot Springs, VA)
- // lon = -79.8338964 + 0.01;
- // lat = 37.9514564 + 0.008;
+ // lon(-79.8338964 + 0.01),
+ // lat( 37.9514564 + 0.008),
// (SEZ) SEDONA airport
- // lon = -111.7884614 + 0.01;
- // lat = 34.8486289 - 0.015;
+ // lon(-111.7884614 + 0.01),
+ // lat( 34.8486289 - 0.015),
// Somewhere near the Grand Canyon
- // lon = -112.5;
- // lat = 36.5;
+ // lon(-112.5),
+ // lat( 36.5),
// Jim Brennon's Kingmont Observatory
- // lon = -121.1131667;
- // lat = 38.8293917;
+ // lon(-121.1131667),
+ // lat( 38.8293917),
// Huaras, Peru (S09d 31.871' W077d 31.498')
- // lon = -77.5249667;
- // lat = -9.5311833;
+ // lon(-77.5249667),
+ // lat( -9.5311833),
// Eclipse Watching w73.5 n10 (approx) 18:00 UT
- // lon = -73.5;
- // lat = 10.0;
+ // lon(-73.5),
+ // lat( 10.0),
// Test Position
- // lon = 8.5;
- // lat = 47.5;
+ // lon( 8.5),
+ // lat(47.5),
// Timms Hill (WI)
- // lon = -90.1953055556;
- // lat = 45.4511388889;
+ // lon(-90.1953055556),
+ // lat( 45.4511388889),
- altitude = -9999.0; // starting altitude in meters (this will be
- // reset to ground level if it is lower
- // than the terrain
+ // starting altitude in meters (this will be reset to ground level
+ // if it is lower than the terrain
+ altitude(-9999.0),
// Initial Orientation
- heading = 270.0; // heading (yaw) angle in degress (Psi)
- roll = 0.0; // roll angle in degrees (Phi)
- pitch = 0.424; // pitch angle in degrees (Theta)
+ heading(270.0), // heading (yaw) angle in degress (Psi)
+ roll(0.0), // roll angle in degrees (Phi)
+ pitch(0.424), // pitch angle in degrees (Theta)
// Miscellaneous
- splash_screen = 1;
- intro_music = 1;
- mouse_pointer = 0;
- pause = 0;
+ game_mode(0),
+ splash_screen(1),
+ intro_music(1),
+ mouse_pointer(0),
+ pause(0),
// Features
- hud_status = 1;
- panel_status = 0;
+ hud_status(1),
+ panel_status(0),
+ sound(1),
// Flight Model options
- flight_model = FG_LARCSIM;
+ flight_model(FG_LARCSIM),
// Rendering options
- fog = 2; // nicest
- fov = 55.0;
- fullscreen = 0;
- shading = 1;
- skyblend = 1;
- textures = 1;
- wireframe = 0;
+ fog(FG_FOG_NICEST), // nicest
+ fov(55.0),
+ fullscreen(0),
+ shading(1),
+ skyblend(1),
+ textures(1),
+ wireframe(0),
// Scenery options
- tile_diameter = 5;
+ tile_diameter(5),
+ // HUD options
+ tris_or_culled(0),
+
// Time options
- time_offset = 0;
-}
-
-
-// Parse an int out of a --foo-bar=n type option
-static int parse_int(char *arg) {
- int result;
-
- // advance past the '='
- while ( (arg[0] != '=') && (arg[0] != '\0') ) {
- arg++;
- }
-
- if ( arg[0] == '=' ) {
- arg++;
- }
-
- // printf("parse_int(): arg = %s\n", arg);
-
- result = atoi(arg);
-
- // printf("parse_int(): result = %d\n", result);
-
- return(result);
-}
-
-
-// Parse an int out of a --foo-bar=n type option
-static double parse_double(char *arg) {
- double result;
+ time_offset(0)
+{
+ // set initial values/defaults
+ char* envp = ::getenv( "FG_ROOT" );
- // advance past the '='
- while ( (arg[0] != '=') && (arg[0] != '\0') ) {
- arg++;
- }
+ if ( envp != NULL ) {
+ // fg_root could be anywhere, so default to environmental
+ // variable $FG_ROOT if it is set.
+ fg_root = envp;
+ } else {
+ // Otherwise, default to a random compiled in location if
+ // $FG_ROOT is not set. This can still be overridden from the
+ // command line or a config file.
- if ( arg[0] == '=' ) {
- arg++;
+#if defined(WIN32)
+ fg_root = "\\FlightGear";
+#else
+ fg_root = "/usr/local/lib/FlightGear";
+#endif
}
- // printf("parse_double(): arg = %s\n", arg);
-
- result = atof(arg);
-
- // printf("parse_double(): result = %.4f\n", result);
-
- return(result);
+ airport_id = ""; // default airport id
}
-static double parse_time(char *time_str) {
- char num[256];
+double
+fgOPTIONS::parse_time(const string& time_in) {
+ char *time_str, num[256];
double hours, minutes, seconds;
double result = 0.0;
int sign = 1;
int i;
+ time_str = (char *)time_in.c_str();
+
// printf("parse_time(): %s\n", time_str);
// check for sign
// parse degree in the form of [+/-]hhh:mm:ss
-static double parse_degree(char *degree_str) {
- double result;
-
- // advance past the '='
- while ( (degree_str[0] != '=') && (degree_str[0] != '\0') ) {
- degree_str++;
- }
-
- if ( degree_str[0] == '=' ) {
- degree_str++;
- }
-
- result = parse_time(degree_str);
+double
+fgOPTIONS::parse_degree( const string& degree_str) {
+ double result = parse_time( degree_str );
// printf("Degree = %.4f\n", result);
// parse time offset command line option
-static int parse_time_offset(char *time_str) {
+int
+fgOPTIONS::parse_time_offset( const string& time_str) {
int result;
- // advance past the '='
- while ( (time_str[0] != '=') && (time_str[0] != '\0') ) {
- time_str++;
- }
-
- if ( time_str[0] == '=' ) {
- time_str++;
- }
-
// printf("time offset = %s\n", time_str);
#ifdef HAVE_RINT
// Parse --tile-diameter=n type option
-#define FG_RADIUS_MIN 1
-#define FG_RADIUS_MAX 4
-
-static int parse_tile_radius(char *arg) {
- int radius;
-
- radius = parse_int(arg);
+int
+fgOPTIONS::parse_tile_radius( const string& arg ) {
+ int radius = atoi( arg );
if ( radius < FG_RADIUS_MIN ) { radius = FG_RADIUS_MIN; }
if ( radius > FG_RADIUS_MAX ) { radius = FG_RADIUS_MAX; }
// Parse --flightmode=abcdefg type option
-static int parse_flight_model(char *fm) {
- fm += 15;
-
+int
+fgOPTIONS::parse_flight_model( const string& fm ) {
// printf("flight model = %s\n", fm);
- if ( strcmp(fm, "slew") == 0 ) {
+ if ( fm == "slew" ) {
return(FG_SLEW);
- } else if ( strcmp(fm, "larcsim") == 0 ) {
- return(FG_LARCSIM);
- } else if ( strcmp(fm, "LaRCsim") == 0 ) {
+ } else if ( (fm == "larcsim") || (fm == "LaRCsim") ) {
return(FG_LARCSIM);
} else {
- fgPrintf( FG_GENERAL, FG_EXIT, "Unknown flight model = %s\n", fm);
+ fgPrintf( FG_GENERAL, FG_EXIT, "Unknown flight model = %s\n",
+ fm.c_str());
}
// we'll never get here, but it makes the compiler happy.
// Parse --fov=x.xx type option
-static double parse_fov(char *arg) {
- double fov;
-
- fov = parse_double(arg);
+double
+fgOPTIONS::parse_fov( const string& arg ) {
+ double fov = atof(arg);
if ( fov < FG_FOV_MIN ) { fov = FG_FOV_MIN; }
if ( fov > FG_FOV_MAX ) { fov = FG_FOV_MAX; }
// Parse a single option
-int fgOPTIONS::parse_option( char *arg ) {
+int fgOPTIONS::parse_option( const string& arg ) {
// General Options
- if ( (strcmp(arg, "--help") == 0) ||
- (strcmp(arg, "-h") == 0) ) {
+ if ( (arg == "--help") || (arg == "-h") ) {
// help/usage request
return(FG_OPTIONS_HELP);
- } else if ( strcmp(arg, "--disable-splash-screen") == 0 ) {
- splash_screen = 0;
- } else if ( strcmp(arg, "--enable-splash-screen") == 0 ) {
- splash_screen = 1;
- } else if ( strcmp(arg, "--disable-intro-music") == 0 ) {
- intro_music = 0;
- } else if ( strcmp(arg, "--enable-intro-music") == 0 ) {
- intro_music = 1;
- } else if ( strcmp(arg, "--disable-mouse-pointer") == 0 ) {
+ } else if ( arg == "--disable-game-mode") {
+ game_mode = false;
+ } else if ( arg == "--enable-game-mode" ) {
+ game_mode = true;
+ } else if ( arg == "--disable-splash-screen" ) {
+ splash_screen = false;
+ } else if ( arg == "--enable-splash-screen" ) {
+ splash_screen = true;
+ } else if ( arg == "--disable-intro-music" ) {
+ intro_music = false;
+ } else if ( arg == "--enable-intro-music" ) {
+ intro_music = true;
+ } else if ( arg == "--disable-mouse-pointer" ) {
mouse_pointer = 1;
- } else if ( strcmp(arg, "--enable-mouse-pointer") == 0 ) {
+ } else if ( arg == "--enable-mouse-pointer" ) {
mouse_pointer = 2;
- } else if ( strcmp(arg, "--disable-pause") == 0 ) {
- pause = 0;
- } else if ( strcmp(arg, "--enable-pause") == 0 ) {
- pause = 1;
- } else if ( strcmp(arg, "--disable-hud") == 0 ) {
- hud_status = 0;
- } else if ( strcmp(arg, "--enable-hud") == 0 ) {
- hud_status = 1;
- } else if ( strcmp(arg, "--disable-panel") == 0 ) {
- panel_status = 0;
- } else if ( strcmp(arg, "--enable-panel") == 0 ) {
- panel_status = 1;
- } else if ( strcmp(arg, "--disable-sound") == 0 ) {
- sound = 0;
- } else if ( strcmp(arg, "--enable-sound") == 0 ) {
- sound = 1;
- } else if ( strncmp(arg, "--airport-id=", 13) == 0 ) {
- arg += 13;
- strncpy(airport_id, arg, 4);
- } else if ( strncmp(arg, "--lon=", 6) == 0 ) {
- lon = parse_degree(arg);
- } else if ( strncmp(arg, "--lat=", 6) == 0 ) {
- lat = parse_degree(arg);
- } else if ( strncmp(arg, "--altitude=", 11) == 0 ) {
- altitude = parse_double(arg);
- } else if ( strncmp(arg, "--heading=", 6) == 0 ) {
- heading = parse_double(arg);
- } else if ( strncmp(arg, "--roll=", 7) == 0 ) {
- roll = parse_double(arg);
- } else if ( strncmp(arg, "--pitch=", 8) == 0 ) {
- pitch = parse_double(arg);
- } else if ( strncmp(arg, "--fg-root=", 10) == 0 ) {
- arg += 10;
- strcpy(fg_root, arg);
- } else if ( strncmp(arg, "--flight-model=", 15) == 0 ) {
- flight_model = parse_flight_model(arg);
- } else if ( strcmp(arg, "--fog-disable") == 0 ) {
- fog = 0;
- } else if ( strcmp(arg, "--fog-fastest") == 0 ) {
- fog = 1;
- } else if ( strcmp(arg, "--fog-nicest") == 0 ) {
- fog = 2;
- } else if ( strncmp(arg, "--fov=", 6) == 0 ) {
- fov = parse_fov(arg);
- } else if ( strcmp(arg, "--disable-fullscreen") == 0 ) {
- fullscreen = 0;
- } else if ( strcmp(arg, "--enable-fullscreen") == 0 ) {
- fullscreen = 1;
- } else if ( strcmp(arg, "--shading-flat") == 0 ) {
+ } else if ( arg == "--disable-pause" ) {
+ pause = false;
+ } else if ( arg == "--enable-pause" ) {
+ pause = true;
+ } else if ( arg == "--disable-hud" ) {
+ hud_status = false;
+ } else if ( arg == "--enable-hud" ) {
+ hud_status = true;
+ } else if ( arg == "--disable-panel" ) {
+ panel_status = false;
+ } else if ( arg == "--enable-panel" ) {
+ panel_status = true;
+ } else if ( arg == "--disable-sound" ) {
+ sound = false;
+ } else if ( arg == "--enable-sound" ) {
+ sound = true;
+ } else if ( arg.find( "--airport-id=") != string::npos ) {
+ airport_id = arg.substr( 13 );
+ } else if ( arg.find( "--lon=" ) != string::npos ) {
+ lon = parse_degree( arg.substr(6) );
+ } else if ( arg.find( "--lat=" ) != string::npos ) {
+ lat = parse_degree( arg.substr(6) );
+ } else if ( arg.find( "--altitude=" ) != string::npos ) {
+ altitude = atof( arg.substr(11) );
+ } else if ( arg.find( "--heading=" ) != string::npos ) {
+ heading = atof( arg.substr(10) );
+ } else if ( arg.find( "--roll=" ) != string::npos ) {
+ roll = atof( arg.substr(7) );
+ } else if ( arg.find( "--pitch=" ) != string::npos ) {
+ pitch = atof( arg.substr(8) );
+ } else if ( arg.find( "--fg-root=" ) != string::npos ) {
+ fg_root = arg.substr( 10 );
+ } else if ( arg.find( "--flight-model=" ) != string::npos ) {
+ flight_model = parse_flight_model( arg.substr(15) );
+ } else if ( arg == "--fog-disable" ) {
+ fog = FG_FOG_DISABLED;
+ } else if ( arg == "--fog-fastest" ) {
+ fog = FG_FOG_FASTEST;
+ } else if ( arg == "--fog-nicest" ) {
+ fog = FG_FOG_NICEST;
+ } else if ( arg.find( "--fov=" ) != string::npos ) {
+ fov = parse_fov( arg.substr(6) );
+ } else if ( arg == "--disable-fullscreen" ) {
+ fullscreen = false;
+ } else if ( arg== "--enable-fullscreen") {
+ fullscreen = true;
+ } else if ( arg == "--shading-flat") {
shading = 0;
- } else if ( strcmp(arg, "--shading-smooth") == 0 ) {
+ } else if ( arg == "--shading-smooth") {
shading = 1;
- } else if ( strcmp(arg, "--disable-skyblend") == 0 ) {
- skyblend = 0;
- } else if ( strcmp(arg, "--enable-skyblend") == 0 ) {
- skyblend = 1;
- } else if ( strcmp(arg, "--disable-textures") == 0 ) {
- textures = 0;
- } else if ( strcmp(arg, "--enable-textures") == 0 ) {
- textures = 1;
- } else if ( strcmp(arg, "--disable-wireframe") == 0 ) {
- wireframe = 0;
- } else if ( strcmp(arg, "--enable-wireframe") == 0 ) {
- wireframe = 1;
- } else if ( strncmp(arg, "--tile-radius=", 14) == 0 ) {
- tile_radius = parse_tile_radius(arg);
+ } else if ( arg == "--disable-skyblend") {
+ skyblend = false;
+ } else if ( arg== "--enable-skyblend" ) {
+ skyblend = true;
+ } else if ( arg == "--disable-textures" ) {
+ textures = false;
+ } else if ( arg == "--enable-textures" ) {
+ textures = true;
+ } else if ( arg == "--disable-wireframe" ) {
+ wireframe = false;
+ } else if ( arg == "--enable-wireframe" ) {
+ wireframe = true;
+ } else if ( arg.find( "--tile-radius=" ) != string::npos ) {
+ tile_radius = parse_tile_radius( arg.substr(14) );
tile_diameter = tile_radius * 2 + 1;
- } else if ( strncmp(arg, "--time-offset=", 14) == 0 ) {
- time_offset = parse_time_offset(arg);
+ } else if ( arg.find( "--time-offset=" ) != string::npos ) {
+ time_offset = parse_time_offset( (arg.substr(14)) );
+ } else if ( arg == "--hud-tris" ) {
+ tris_or_culled = 0;
+ } else if ( arg == "--hud-culled" ) {
+ tris_or_culled = 1;
} else {
- fgPrintf( FG_GENERAL, FG_EXIT, "Unknown option '%s'\n", arg);
+ fgPrintf( FG_GENERAL, FG_EXIT, "Unknown option '%s'\n",
+ arg.c_str() );
return(FG_OPTIONS_ERROR);
}
}
-// Parse the command line options
-int fgOPTIONS::parse_config_file( char *path ) {
- char fgpath[256], line[256];
- fgFile f;
- int len, result;
-
- strcpy(fgpath, path);
- strcat(fgpath, ".gz");
-
- // first try "path.gz"
- if ( (f = fgopen(fgpath, "rb")) == NULL ) {
- // next try "path"
- if ( (f = fgopen(path, "rb")) == NULL ) {
- return(FG_OPTIONS_ERROR);
- }
- }
+// Parse config file options
+int fgOPTIONS::parse_config_file( const string& path ) {
+ fg_gzifstream in( path );
+ if ( !in )
+ return(FG_OPTIONS_ERROR);
- fgPrintf(FG_GENERAL, FG_INFO, "Processing config file: %s\n", path);
+ fgPrintf( FG_GENERAL, FG_INFO, "Processing config file: %s\n",
+ path.c_str() );
- while ( fggets(f, line, 250) != NULL ) {
- // strip trailing newline if it exists
- len = strlen(line);
- if ( line[len-1] == '\n' ) {
- line[len-1] = '\0';
- }
+ in.eat_comments();
+ while ( !in.eof() )
+ {
+ string line;
+ getline( in.stream(), line );
- // strip dos ^M if it exists
- len = strlen(line);
- if ( line[len-1] == '\r' ) {
- line[len-1] = '\0';
- }
-
- result = parse_option(line);
- if ( result == FG_OPTIONS_ERROR ) {
+ if ( parse_option( line ) == FG_OPTIONS_ERROR ) {
fgPrintf( FG_GENERAL, FG_EXIT,
- "Config file parse error: %s '%s'\n", path, line );
+ "Config file parse error: %s '%s'\n",
+ path.c_str(), line.c_str() );
}
+ in.eat_comments();
}
- fgclose(f);
- return(FG_OPTIONS_OK);
+ return FG_OPTIONS_OK;
}
printf("General Options:\n");
printf("\t--help -h: print usage\n");
printf("\t--fg-root=path: specify the root path for all the data files\n");
+ printf("\t--disable-game-mode: disable full-screen game mode\n");
+ printf("\t--enable-game-mode: enable full-screen game mode\n");
printf("\t--disable-splash-screen: disable splash screen\n");
printf("\t--enable-splash-screen: enable splash screen\n");
printf("\t--disable-intro-music: disable introduction music\n");
printf("\t--tile-radius=n: specify tile radius, must be 1 - 4\n");
printf("\n");
+ printf("Hud Options:\n");
+ printf("\t--hud-tris: Hud displays number of triangles rendered\n");
+ printf("\t--hud-culled: Hud displays percentage of triangles culled\n");
+
printf("Time Options:\n");
printf("\t--time-offset=[+-]hh:mm:ss: offset local time by this amount\n");
}
-// Query functions
-void fgOPTIONS::get_fg_root(char *root) { strcpy(root, fg_root); }
-void fgOPTIONS::get_airport_id(char *id) { strcpy(id, airport_id); }
-double fgOPTIONS::get_lon( void ) { return(lon); }
-double fgOPTIONS::get_lat( void ) { return(lat); }
-double fgOPTIONS::get_altitude( void ) { return(altitude); }
-double fgOPTIONS::get_heading( void ) { return(heading); }
-double fgOPTIONS::get_roll( void ) { return(roll); }
-double fgOPTIONS::get_pitch( void ) { return(pitch); }
-int fgOPTIONS::get_splash_screen( void ) { return(splash_screen); }
-int fgOPTIONS::get_intro_music( void ) { return(intro_music); }
-int fgOPTIONS::get_mouse_pointer( void ) { return(mouse_pointer); }
-int fgOPTIONS::get_pause( void ) { return(pause); }
-int fgOPTIONS::get_hud_status( void ) { return(hud_status); }
-int fgOPTIONS::get_panel_status( void ) { return(panel_status); }
-int fgOPTIONS::get_sound( void ) { return(sound); }
-int fgOPTIONS::get_flight_model( void ) { return(flight_model); }
-int fgOPTIONS::get_fog( void ) { return(fog); }
-double fgOPTIONS::get_fov( void ) { return(fov); }
-int fgOPTIONS::get_fullscreen( void ) { return(fullscreen); }
-int fgOPTIONS::get_shading( void ) { return(shading); }
-int fgOPTIONS::get_skyblend( void ) { return(skyblend); }
-int fgOPTIONS::get_textures( void ) { return(textures); }
-int fgOPTIONS::get_wireframe( void ) { return(wireframe); }
-int fgOPTIONS::get_tile_radius( void ) { return(tile_radius); }
-int fgOPTIONS::get_tile_diameter( void ) { return(tile_diameter); }
-int fgOPTIONS::get_time_offset( void ) { return(time_offset); }
-
-
-// Update functions
-void fgOPTIONS::set_hud_status( int status ) { hud_status = status; }
-void fgOPTIONS::set_fov( double amount ) { fov = amount; }
-
// Destructor
fgOPTIONS::~fgOPTIONS( void ) {
}
// $Log$
+// Revision 1.26 1998/10/17 01:34:24 curt
+// C++ ifying ...
+//
+// Revision 1.25 1998/09/15 02:09:27 curt
+// Include/fg_callback.hxx
+// Moved code inline to stop g++ 2.7 from complaining.
+//
+// Simulator/Time/event.[ch]xx
+// Changed return type of fgEVENT::printStat(). void caused g++ 2.7 to
+// complain bitterly.
+//
+// Minor bugfix and changes.
+//
+// Simulator/Main/GLUTmain.cxx
+// Added missing type to idle_state definition - eliminates a warning.
+//
+// Simulator/Main/fg_init.cxx
+// Changes to airport lookup.
+//
+// Simulator/Main/options.cxx
+// Uses fg_gzifstream when loading config file.
+//
+// Revision 1.24 1998/09/08 15:04:33 curt
+// Optimizations by Norman Vine.
+//
+// Revision 1.23 1998/08/27 17:02:07 curt
+// Contributions from Bernie Bright <bbright@c031.aone.net.au>
+// - use strings for fg_root and airport_id and added methods to return
+// them as strings,
+// - inlined all access methods,
+// - made the parsing functions private methods,
+// - deleted some unused functions.
+// - propogated some of these changes out a bit further.
+//
+// Revision 1.22 1998/08/24 20:11:13 curt
+// Added i/I to toggle full vs. minimal HUD.
+// Added a --hud-tris vs --hud-culled option.
+// Moved options accessor funtions to options.hxx.
+//
+// Revision 1.21 1998/08/20 15:10:34 curt
+// Added GameGLUT support.
+//
// Revision 1.20 1998/07/30 23:48:28 curt
// Output position & orientation when pausing.
// Eliminated libtool use.