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flightgear/Main/options.cxx

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//
// options.cxx -- class to handle command line options
//
// Written by Curtis Olson, started April 1998.
//
// Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
// (Log is kept at end of this file)
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <math.h> // rint()
#include <stdio.h>
#include <stdlib.h> // atof(), atoi()
#include <string.h>
#include <string>
#include <Debug/fg_debug.h>
#include <Flight/flight.hxx>
#include <Include/fg_constants.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() :
// starting longitude in degrees (west = -)
// starting latitude in degrees (south = -)
// 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),
// North of the city of Globe
// lon(-110.742578),
// lat( 33.507122),
// Near where I used to live in Globe, AZ
// lon(-110.766000),
// lat( 33.377778),
// 10125 Jewell St. NE
// lon(-93.15),
// lat( 45.15),
// Near KHSP (Hot Springs, VA)
// lon(-79.8338964 + 0.01),
// lat( 37.9514564 + 0.008),
// (SEZ) SEDONA airport
// lon(-111.7884614 + 0.01),
// lat( 34.8486289 - 0.015),
// Somewhere near the Grand Canyon
// lon(-112.5),
// lat( 36.5),
// Jim Brennon's Kingmont Observatory
// lon(-121.1131667),
// lat( 38.8293917),
// Huaras, Peru (S09d 31.871' W077d 31.498')
// lon(-77.5249667),
// lat( -9.5311833),
// Eclipse Watching w73.5 n10 (approx) 18:00 UT
// lon(-73.5),
// lat( 10.0),
// Test Position
// lon( 8.5),
// lat(47.5),
// Timms Hill (WI)
// lon(-90.1953055556),
// lat( 45.4511388889),
// 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)
// Miscellaneous
game_mode(0),
splash_screen(1),
intro_music(1),
mouse_pointer(0),
pause(0),
// Features
hud_status(1),
panel_status(0),
sound(1),
// Flight Model options
flight_model(FG_LARCSIM),
// Rendering options
fog(FG_FOG_NICEST), // nicest
fov(55.0),
fullscreen(0),
shading(1),
skyblend(1),
textures(1),
wireframe(0),
// Scenery options
tile_diameter(5),
// HUD options
units(FG_UNITS_FEET),
tris_or_culled(0),
// Time options
time_offset(0)
{
// set initial values/defaults
char* envp = ::getenv( "FG_ROOT" );
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 defined(WIN32)
fg_root = "\\FlightGear";
#else
fg_root = "/usr/local/lib/FlightGear";
#endif
}
airport_id = ""; // default airport id
}
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
if ( strlen(time_str) ) {
if ( time_str[0] == '+' ) {
sign = 1;
time_str++;
} else if ( time_str[0] == '-' ) {
sign = -1;
time_str++;
}
}
// printf("sign = %d\n", sign);
// get hours
if ( strlen(time_str) ) {
i = 0;
while ( (time_str[0] != ':') && (time_str[0] != '\0') ) {
num[i] = time_str[0];
time_str++;
i++;
}
if ( time_str[0] == ':' ) {
time_str++;
}
num[i] = '\0';
hours = atof(num);
// printf("hours = %.2lf\n", hours);
result += hours;
}
// get minutes
if ( strlen(time_str) ) {
i = 0;
while ( (time_str[0] != ':') && (time_str[0] != '\0') ) {
num[i] = time_str[0];
time_str++;
i++;
}
if ( time_str[0] == ':' ) {
time_str++;
}
num[i] = '\0';
minutes = atof(num);
// printf("minutes = %.2lf\n", minutes);
result += minutes / 60.0;
}
// get seconds
if ( strlen(time_str) ) {
i = 0;
while ( (time_str[0] != ':') && (time_str[0] != '\0') ) {
num[i] = time_str[0];
time_str++;
i++;
}
num[i] = '\0';
seconds = atof(num);
// printf("seconds = %.2lf\n", seconds);
result += seconds / 3600.0;
}
return(sign * result);
}
// parse degree in the form of [+/-]hhh:mm:ss
double
fgOPTIONS::parse_degree( const string& degree_str) {
double result = parse_time( degree_str );
// printf("Degree = %.4f\n", result);
return(result);
}
// parse time offset command line option
int
fgOPTIONS::parse_time_offset( const string& time_str) {
int result;
// printf("time offset = %s\n", time_str);
#ifdef HAVE_RINT
result = (int)rint(parse_time(time_str) * 3600.0);
#else
result = (int)(parse_time(time_str) * 3600.0);
#endif
// printf("parse_time_offset(): %d\n", result);
return( result );
}
// Parse --tile-diameter=n type option
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; }
// printf("parse_tile_radius(): radius = %d\n", radius);
return(radius);
}
// Parse --flightmode=abcdefg type option
int
fgOPTIONS::parse_flight_model( const string& fm ) {
// printf("flight model = %s\n", fm);
if ( fm == "slew" ) {
return(FG_SLEW);
} else if ( (fm == "larcsim") || (fm == "LaRCsim") ) {
return(FG_LARCSIM);
} else {
fgPrintf( FG_GENERAL, FG_EXIT, "Unknown flight model = %s\n",
fm.c_str());
}
// we'll never get here, but it makes the compiler happy.
return(-1);
}
// Parse --fov=x.xx type option
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; }
// printf("parse_fov(): result = %.4f\n", fov);
return(fov);
}
// Parse a single option
int fgOPTIONS::parse_option( const string& arg ) {
// General Options
if ( (arg == "--help") || (arg == "-h") ) {
// help/usage request
return(FG_OPTIONS_HELP);
} 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 ( arg == "--enable-mouse-pointer" ) {
mouse_pointer = 2;
} 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 ( arg == "--shading-smooth") {
shading = 1;
} 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 == "--units-feet" ) {
units = FG_UNITS_FEET;
} else if ( arg == "--units-meters" ) {
units = FG_UNITS_METERS;
} else if ( arg.find( "--tile-radius=" ) != string::npos ) {
tile_radius = parse_tile_radius( arg.substr(14) );
tile_diameter = tile_radius * 2 + 1;
} 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.c_str() );
return(FG_OPTIONS_ERROR);
}
return(FG_OPTIONS_OK);
}
// Parse the command line options
int fgOPTIONS::parse_command_line( int argc, char **argv ) {
int i = 1;
int result;
fgPrintf(FG_GENERAL, FG_INFO, "Processing command line arguments\n");
while ( i < argc ) {
fgPrintf(FG_GENERAL, FG_DEBUG, "argv[%d] = %s\n", i, argv[i]);
result = parse_option(argv[i]);
if ( (result == FG_OPTIONS_HELP) || (result == FG_OPTIONS_ERROR) ) {
return(result);
}
i++;
}
return(FG_OPTIONS_OK);
}
// 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.c_str() );
in.eat_comments();
while ( !in.eof() )
{
string line;
getline( in.stream(), line );
if ( parse_option( line ) == FG_OPTIONS_ERROR ) {
fgPrintf( FG_GENERAL, FG_EXIT,
"Config file parse error: %s '%s'\n",
path.c_str(), line.c_str() );
}
in.eat_comments();
}
return FG_OPTIONS_OK;
}
// Print usage message
void fgOPTIONS::usage ( void ) {
printf("Usage: fg [ options ... ]\n");
printf("\n");
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--enable-intro-music: enable introduction music\n");
printf("\t--disable-mouse-pointer: disable extra mouse pointer\n");
printf("\t--enable-mouse-pointer: enable extra mouse pointer (i.e. for\n");
printf("\t\tfull screen voodoo/voodoo-II based cards.)\n");
printf("\t--disable-pause: start out in an active state\n");
printf("\t--enable-pause: start out in a paused state\n");
printf("\n");
printf("Features:\n");
printf("\t--disable-hud: disable heads up display\n");
printf("\t--enable-hud: enable heads up display\n");
printf("\t--disable-panel: disable instrument panel\n");
printf("\t--enable-panel: enable instrumetn panel\n");
printf("\t--disable-sound: disable sound effects\n");
printf("\t--enable-sound: enable sound effects\n");
printf("\n");
printf("Initial Position and Orientation:\n");
printf("\t--airport-id=ABCD: specify starting postion by airport id\n");
printf("\t--lon=degrees: starting longitude in degrees (west = -)\n");
printf("\t--lat=degrees: starting latitude in degrees (south = -)\n");
printf("\t--altitude=meters: starting altitude in meters\n");
printf("\t--heading=degrees: heading (yaw) angle in degress (Psi)\n");
printf("\t--roll=degrees: roll angle in degrees (Phi)\n");
printf("\t--pitch=degrees: pitch angle in degrees (Theta)\n");
printf("\n");
printf("Rendering Options:\n");
printf("\t--fog-disable: disable fog/haze\n");
printf("\t--fog-fastest: enable fastest fog/haze\n");
printf("\t--fog-nicest: enable nicest fog/haze\n");
printf("\t--fov=xx.x: specify initial field of view angle in degrees\n");
printf("\t--disable-fullscreen: disable fullscreen mode\n");
printf("\t--enable-fullscreen: enable fullscreen mode\n");
printf("\t--shading-flat: enable flat shading\n");
printf("\t--shading-smooth: enable smooth shading\n");
printf("\t--disable-skyblend: disable sky blending\n");
printf("\t--enable-skyblend: enable sky blending\n");
printf("\t--disable-textures: disable textures\n");
printf("\t--enable-textures: enable textures\n");
printf("\t--disable-wireframe: disable wireframe drawing mode\n");
printf("\t--enable-wireframe: enable wireframe drawing mode\n");
printf("\n");
printf("Scenery Options:\n");
printf("\t--tile-radius=n: specify tile radius, must be 1 - 4\n");
printf("\n");
printf("Hud Options:\n");
printf("\t--units-feet: Hud displays units in feet\n");
printf("\t--units-meters: Hud displays units in meters\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");
}
// Destructor
fgOPTIONS::~fgOPTIONS( void ) {
}
// $Log$
// Revision 1.27 1998/11/02 23:04:04 curt
// HUD units now display in feet by default with meters being a command line
// option.
//
// 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.
// Added options to specify initial position and orientation.
// Changed default fov to 55 degrees.
// Added command line option to start in paused or unpaused state.
//
// Revision 1.19 1998/07/27 18:41:25 curt
// Added a pause command "p"
// Fixed some initialization order problems between pui and glut.
// Added an --enable/disable-sound option.
//
// Revision 1.18 1998/07/22 01:27:03 curt
// Strip out \r when parsing config file in case we are on a windoze system.
//
// Revision 1.17 1998/07/16 17:33:38 curt
// "H" / "h" now control hud brightness as well with off being one of the
// states.
// Better checking for xmesa/fx 3dfx fullscreen/window support for deciding
// whether or not to build in the feature.
// Translucent menu support.
// HAVE_AUDIO_SUPPORT -> ENABLE_AUDIO_SUPPORT
// Use fork() / wait() for playing mp3 init music in background under unix.
// Changed default tile diameter to 5.
//
// Revision 1.16 1998/07/13 21:01:39 curt
// Wrote access functions for current fgOPTIONS.
//
// Revision 1.15 1998/07/06 21:34:19 curt
// Added an enable/disable splash screen option.
// Added an enable/disable intro music option.
// Added an enable/disable instrument panel option.
// Added an enable/disable mouse pointer option.
// Added using namespace std for compilers that support this.
//
// Revision 1.14 1998/07/04 00:52:26 curt
// Add my own version of gluLookAt() (which is nearly identical to the
// Mesa/glu version.) But, by calculating the Model View matrix our selves
// we can save this matrix without having to read it back in from the video
// card. This hopefully allows us to save a few cpu cycles when rendering
// out the fragments because we can just use glLoadMatrixd() with the
// precalculated matrix for each tile rather than doing a push(), translate(),
// pop() for every fragment.
//
// Panel status defaults to off for now until it gets a bit more developed.
//
// Extract OpenGL driver info on initialization.
//
// Revision 1.13 1998/06/27 16:54:34 curt
// Replaced "extern displayInstruments" with a entry in fgOPTIONS.
// Don't change the view port when displaying the panel.
//
// Revision 1.12 1998/06/17 21:35:13 curt
// Refined conditional audio support compilation.
// Moved texture parameter setup calls to ../Scenery/materials.cxx
// #include <string.h> before various STL includes.
// Make HUD default state be enabled.
//
// Revision 1.11 1998/06/13 00:40:33 curt
// Tweaked fog command line options.
//
// Revision 1.10 1998/05/16 13:08:36 curt
// C++ - ified views.[ch]xx
// Shuffled some additional view parameters into the fgVIEW class.
// Changed tile-radius to tile-diameter because it is a much better
// name.
// Added a WORLD_TO_EYE transformation to views.cxx. This allows us
// to transform world space to eye space for view frustum culling.
//
// Revision 1.9 1998/05/13 18:29:59 curt
// Added a keyboard binding to dynamically adjust field of view.
// Added a command line option to specify fov.
// Adjusted terrain color.
// Root path info moved to fgOPTIONS.
// Added ability to parse options out of a config file.
//
// Revision 1.8 1998/05/07 23:14:16 curt
// Added "D" key binding to set autopilot heading.
// Made frame rate calculation average out over last 10 frames.
// Borland C++ floating point exception workaround.
// Added a --tile-radius=n option.
//
// Revision 1.7 1998/05/06 03:16:25 curt
// Added an averaged global frame rate counter.
// Added an option to control tile radius.
//
// Revision 1.6 1998/05/03 00:47:32 curt
// Added an option to enable/disable full-screen mode.
//
// Revision 1.5 1998/04/30 12:34:19 curt
// Added command line rendering options:
// enable/disable fog/haze
// specify smooth/flat shading
// disable sky blending and just use a solid color
// enable wireframe drawing mode
//
// Revision 1.4 1998/04/28 01:20:22 curt
// Type-ified fgTIME and fgVIEW.
// Added a command line option to disable textures.
//
// Revision 1.3 1998/04/26 05:01:19 curt
// Added an rint() / HAVE_RINT check.
//
// Revision 1.2 1998/04/25 15:11:12 curt
// Added an command line option to set starting position based on airport ID.
//
// Revision 1.1 1998/04/24 00:49:21 curt
// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
// Trying out some different option parsing code.
// Some code reorganization.
//
//
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