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flightgear/Main/fg_init.cxx
curt e81eeba64f 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.
1998-07-30 23:48:24 +00:00

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22 KiB
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//
// fg_init.cxx -- Flight Gear top level initialization routines
//
// Written by Curtis Olson, started August 1997.
//
// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
//
// 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 <stdio.h>
#include <stdlib.h>
// work around a stdc++ lib bug in some versions of linux, but doesn't
// seem to hurt to have this here for all versions of Linux.
#ifdef linux
# define _G_NO_EXTERN_TEMPLATES
#endif
#include <string.h>
#include <Include/fg_constants.h>
#include <Include/general.h>
#include <Aircraft/aircraft.h>
#include <Astro/moon.hxx>
#include <Astro/planets.hxx>
#include <Astro/sky.hxx>
#include <Astro/stars.hxx>
#include <Astro/sun.hxx>
#include <Autopilot/autopilot.h>
#include <Cockpit/cockpit.hxx>
#include <Debug/fg_debug.h>
#include <Joystick/joystick.h>
#include <Math/fg_random.h>
#include <Scenery/scenery.hxx>
#include <Scenery/tilemgr.hxx>
#include <Time/event.hxx>
#include <Time/fg_time.hxx>
#include <Time/light.hxx>
#include <Time/sunpos.hxx>
#include <Weather/weather.h>
#include "airports.hxx"
#include "fg_init.hxx"
#include "options.hxx"
#include "views.hxx"
extern const char *default_root;
// Set initial position and orientation
int fgInitPosition( void ) {
char id[5];
fgFLIGHT *f;
f = current_aircraft.flight;
current_options.get_airport_id(id);
if ( strlen(id) ) {
// set initial position from airport id
fgAIRPORTS airports;
fgAIRPORT a;
fgPrintf( FG_GENERAL, FG_INFO,
"Attempting to set starting position from airport code %s.\n",
id);
airports.load("Airports");
a = airports.search(id);
if ( (fabs(a.longitude) < FG_EPSILON) &&
(fabs(a.latitude) < FG_EPSILON) &&
(fabs(a.elevation) < FG_EPSILON) ) {
fgPrintf( FG_GENERAL, FG_EXIT,
"Failed to find %s in database.\n", id);
} else {
FG_Longitude = ( a.longitude ) * DEG_TO_RAD;
FG_Latitude = ( a.latitude ) * DEG_TO_RAD;
}
} else {
// set initial position from default or command line coordinates
FG_Longitude = current_options.get_lon() * DEG_TO_RAD;
FG_Latitude = current_options.get_lat() * DEG_TO_RAD;
}
printf("starting altitude is = %.2f\n", current_options.get_altitude());
FG_Altitude = current_options.get_altitude() * METER_TO_FEET;
FG_Runway_altitude = FG_Altitude - 3.758099;
fgPrintf( FG_GENERAL, FG_INFO,
"Initial position is: (%.4f, %.4f, %.2f)\n",
FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG,
FG_Altitude * FEET_TO_METER);
return(1);
}
// General house keeping initializations
int fgInitGeneral( void ) {
fgGENERAL *g;
char root[256];
int i;
g = &general;
fgPrintf( FG_GENERAL, FG_INFO, "General Initialization\n" );
fgPrintf( FG_GENERAL, FG_INFO, "======= ==============\n" );
g->glVendor = (char *)glGetString ( GL_VENDOR );
g->glRenderer = (char *)glGetString ( GL_RENDERER );
g->glVersion = (char *)glGetString ( GL_VERSION );
current_options.get_fg_root(root);
if ( !strlen(root) ) {
// No root path set? Then bail ...
fgPrintf( FG_GENERAL, FG_EXIT, "%s %s\n",
"Cannot continue without environment variable FG_ROOT",
"being defined.");
}
fgPrintf( FG_GENERAL, FG_INFO, "FG_ROOT = %s\n\n", root);
// prime the frame rate counter pump
for ( i = 0; i < FG_FRAME_RATE_HISTORY; i++ ) {
g->frames[i] = 0.0;
}
return ( 1 );
}
// This is the top level init routine which calls all the other
// initialization routines. If you are adding a subsystem to flight
// gear, its initialization call should located in this routine.
// Returns non-zero if a problem encountered.
int fgInitSubsystems( void ) {
fgFLIGHT *f;
fgLIGHT *l;
fgTIME *t;
fgVIEW *v;
l = &cur_light_params;
t = &cur_time_params;
v = &current_view;
fgPrintf( FG_GENERAL, FG_INFO, "Initialize Subsystems\n");
fgPrintf( FG_GENERAL, FG_INFO, "========== ==========\n");
// seed the random number generater
fg_srandom();
// The following section sets up the flight model EOM parameters
// and should really be read in from one or more files.
// Must happen before any of the flight model or control
// parameters are set
fgAircraftInit(); // In the future this might not be the case.
f = current_aircraft.flight;
// set the initial position
fgInitPosition();
// Initial Velocity
FG_V_north = 0.0; // 7.287719E+00
FG_V_east = 0.0; // 1.521770E+03
FG_V_down = 0.0; // -1.265722E-05
// Initial Orientation
FG_Phi = current_options.get_roll() * DEG_TO_RAD;
FG_Theta = current_options.get_pitch() * DEG_TO_RAD;
FG_Psi = current_options.get_heading() * DEG_TO_RAD;
// Initial Angular B rates
FG_P_body = 7.206685E-05;
FG_Q_body = 0.000000E+00;
FG_R_body = 9.492658E-05;
FG_Earth_position_angle = 0.000000E+00;
// Mass properties and geometry values
FG_Mass = 8.547270E+01;
FG_I_xx = 1.048000E+03;
FG_I_yy = 3.000000E+03;
FG_I_zz = 3.530000E+03;
FG_I_xz = 0.000000E+00;
// CG position w.r.t. ref. point
FG_Dx_cg = 0.000000E+00;
FG_Dy_cg = 0.000000E+00;
FG_Dz_cg = 0.000000E+00;
// Initialize the event manager
global_events.Init();
// Output event stats every 60 seconds
global_events.Register( "fgEventPrintStats()", fgEventPrintStats,
FG_EVENT_READY, 60000 );
// Initialize the time dependent variables
fgTimeInit(t);
fgTimeUpdate(f, t);
// Initialize view parameters
v->Init();
v->Update(f);
v->UpdateWorldToEye(f);
// Initialize the orbital elements of sun, moon and mayor planets
fgSolarSystemInit(*t);
// Initialize the Stars subsystem
if( fgStarsInit() ) {
// Stars initialized ok.
} else {
fgPrintf( FG_GENERAL, FG_EXIT, "Error in Stars initialization!\n" );
}
// Initialize the planetary subsystem
global_events.Register( "fgPlanetsInit()", fgPlanetsInit,
FG_EVENT_READY, 600000);
// Initialize the sun's position
global_events.Register( "fgSunInit()", fgSunInit,
FG_EVENT_READY, 30000 );
// Intialize the moon's position
global_events.Register( "fgMoonInit()", fgMoonInit,
FG_EVENT_READY, 600000 );
// fgUpdateSunPos() needs a few position and view parameters set
// so it can calculate local relative sun angle and a few other
// things for correctly orienting the sky.
fgUpdateSunPos();
// Initialize Lighting interpolation tables
l->Init();
// update the lighting parameters (based on sun angle)
global_events.Register( "fgLightUpdate()", fgLightUpdate,
FG_EVENT_READY, 30000 );
// Initialize the weather modeling subsystem
fgWeatherInit();
// update the weather for our current position
global_events.Register( "fgWeatherUpdate()", fgWeatherUpdate,
FG_EVENT_READY, 120000 );
// Initialize the Cockpit subsystem
if( fgCockpitInit( &current_aircraft )) {
// Cockpit initialized ok.
} else {
fgPrintf( FG_GENERAL, FG_EXIT, "Error in Cockpit initialization!\n" );
}
// Initialize the "sky"
fgSkyInit();
// Initialize the Scenery Management subsystem
if ( fgSceneryInit() ) {
// Scenery initialized ok.
} else {
fgPrintf( FG_GENERAL, FG_EXIT, "Error in Scenery initialization!\n" );
}
if( fgTileMgrInit() ) {
// Load the local scenery data
fgTileMgrUpdate();
} else {
fgPrintf( FG_GENERAL, FG_EXIT,
"Error in Tile Manager initialization!\n" );
}
// I'm just sticking this here for now, it should probably move
// eventually
scenery.cur_elev = FG_Runway_altitude * FEET_TO_METER;
if ( FG_Altitude < FG_Runway_altitude + 3.758099) {
FG_Altitude = FG_Runway_altitude + 3.758099;
}
fgPrintf( FG_GENERAL, FG_INFO,
"Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
FG_Altitude * FEET_TO_METER);
// end of thing that I just stuck in that I should probably move
// Initialize the flight model subsystem data structures base on
// above values
fgFlightModelInit( current_options.get_flight_model(), f,
1.0 / DEFAULT_MODEL_HZ );
// I'm just sticking this here for now, it should probably move
// eventually
scenery.cur_elev = FG_Runway_altitude * FEET_TO_METER;
if ( FG_Altitude < FG_Runway_altitude + 3.758099) {
FG_Altitude = FG_Runway_altitude + 3.758099;
}
fgPrintf( FG_GENERAL, FG_INFO,
"Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
FG_Altitude * FEET_TO_METER);
// end of thing that I just stuck in that I should probably move
// Joystick support
if (fgJoystickInit(0) ) {
// Joystick initialized ok.
} else {
fgPrintf( FG_GENERAL, FG_EXIT, "Error in Joystick initialization!\n" );
}
// Autopilot init added here, by Jeff Goeke-Smith
fgAPInit(&current_aircraft);
fgPrintf(FG_GENERAL, FG_INFO,"\n");
return(1);
}
// $Log$
// Revision 1.29 1998/07/30 23:48:27 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 1.28 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 1.27 1998/07/24 21:39:10 curt
// Debugging output tweaks.
// Cast glGetString to (char *) to avoid compiler errors.
// Optimizations to fgGluLookAt() by Norman Vine.
//
// Revision 1.26 1998/07/22 21:40:44 curt
// Clear to adjusted fog color (for sunrise/sunset effects)
// Make call to fog sunrise/sunset adjustment method.
// Add a stdc++ library bug work around to fg_init.cxx
//
// Revision 1.25 1998/07/13 21:01:38 curt
// Wrote access functions for current fgOPTIONS.
//
// Revision 1.24 1998/07/13 15:32:39 curt
// Clear color buffer if drawing wireframe.
// When specifying and airport, start elevation at -1000 and let the system
// position you at ground level.
//
// Revision 1.23 1998/07/12 03:14:43 curt
// Added ground collision detection.
// Did some serious horsing around to be able to "hug" the ground properly
// and still be able to take off.
// Set the near clip plane to 1.0 meters when less than 10 meters above the
// ground.
// Did some serious horsing around getting the initial airplane position to be
// correct based on rendered terrain elevation.
// Added a little cheat/hack that will prevent the view position from ever
// dropping below the terrain, even when the flight model doesn't quite
// put you as high as you'd like.
//
// Revision 1.22 1998/07/04 00:52:25 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 1.21 1998/06/27 16:54:33 curt
// Replaced "extern displayInstruments" with a entry in fgOPTIONS.
// Don't change the view port when displaying the panel.
//
// Revision 1.20 1998/06/17 21:35:12 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 1.19 1998/06/08 17:57:05 curt
// Minor sound/startup position tweaks.
//
// Revision 1.18 1998/06/03 00:47:14 curt
// Updated to compile in audio support if OSS available.
// Updated for new version of Steve's audio library.
// STL includes don't use .h
// Small view optimizations.
//
// Revision 1.17 1998/06/01 17:54:42 curt
// Added Linux audio support.
// avoid glClear( COLOR_BUFFER_BIT ) when not using it to set the sky color.
// map stl tweaks.
//
// Revision 1.16 1998/05/29 20:37:24 curt
// Tweaked material properties & lighting a bit in GLUTmain.cxx.
// Read airport list into a "map" STL for dynamic list sizing and fast tree
// based lookups.
//
// Revision 1.15 1998/05/22 21:28:53 curt
// Modifications to use the new fgEVENT_MGR class.
//
// Revision 1.14 1998/05/20 20:51:35 curt
// Tweaked smooth shaded texture lighting properties.
// Converted fgLIGHT to a C++ class.
//
// Revision 1.13 1998/05/16 13:08:35 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 1.12 1998/05/13 18:29:58 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 1.11 1998/05/07 23:14:15 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 1.10 1998/05/06 03:16:24 curt
// Added an averaged global frame rate counter.
// Added an option to control tile radius.
//
// Revision 1.9 1998/05/03 00:47:31 curt
// Added an option to enable/disable full-screen mode.
//
// Revision 1.8 1998/04/30 12:34:18 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 1.7 1998/04/28 01:20:22 curt
// Type-ified fgTIME and fgVIEW.
// Added a command line option to disable textures.
//
// Revision 1.6 1998/04/26 05:10:03 curt
// "struct fgLIGHT" -> "fgLIGHT" because fgLIGHT is typedef'd.
//
// Revision 1.5 1998/04/25 22:06:30 curt
// Edited cvs log messages in source files ... bad bad bad!
//
// Revision 1.4 1998/04/25 20:24:01 curt
// Cleaned up initialization sequence to eliminate interdependencies
// between sun position, lighting, and view position. This creates a
// valid single pass initialization path.
//
// Revision 1.3 1998/04/25 15:11:11 curt
// Added an command line option to set starting position based on airport ID.
//
// Revision 1.2 1998/04/24 00:49:20 curt
// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
// Trying out some different option parsing code.
// Some code reorganization.
//
// Revision 1.1 1998/04/22 13:25:44 curt
// C++ - ifing the code.
// Starting a bit of reorganization of lighting code.
//
// Revision 1.56 1998/04/18 04:11:28 curt
// Moved fg_debug to it's own library, added zlib support.
//
// Revision 1.55 1998/04/14 02:21:03 curt
// Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
// <jgoeke@voyager.net>
//
// Revision 1.54 1998/04/08 23:35:36 curt
// Tweaks to Gnu automake/autoconf system.
//
// Revision 1.53 1998/04/03 22:09:06 curt
// Converting to Gnu autoconf system.
//
// Revision 1.52 1998/03/23 21:24:38 curt
// Source code formating tweaks.
//
// Revision 1.51 1998/03/14 00:31:22 curt
// Beginning initial terrain texturing experiments.
//
// Revision 1.50 1998/03/09 22:46:19 curt
// Minor tweaks.
//
// Revision 1.49 1998/02/23 19:07:59 curt
// Incorporated Durk's Astro/ tweaks. Includes unifying the sun position
// calculation code between sun display, and other FG sections that use this
// for things like lighting.
//
// Revision 1.48 1998/02/21 14:53:15 curt
// Added Charlie's HUD changes.
//
// Revision 1.47 1998/02/19 13:05:53 curt
// Incorporated some HUD tweaks from Michelle America.
// Tweaked the sky's sunset/rise colors.
// Other misc. tweaks.
//
// Revision 1.46 1998/02/18 15:07:06 curt
// Tweaks to build with SGI OpenGL (and therefor hopefully other accelerated
// drivers will work.)
//
// Revision 1.45 1998/02/16 13:39:43 curt
// Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
// tiles to occasionally be missing.
//
// Revision 1.44 1998/02/12 21:59:50 curt
// Incorporated code changes contributed by Charlie Hotchkiss
// <chotchkiss@namg.us.anritsu.com>
//
// Revision 1.43 1998/02/11 02:50:40 curt
// Minor changes.
//
// Revision 1.42 1998/02/09 22:56:58 curt
// Removed "depend" files from cvs control. Other minor make tweaks.
//
// Revision 1.41 1998/02/09 15:07:50 curt
// Minor tweaks.
//
// Revision 1.40 1998/02/07 15:29:44 curt
// Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
// <chotchkiss@namg.us.anritsu.com>
//
// Revision 1.39 1998/02/03 23:20:25 curt
// Lots of little tweaks to fix various consistency problems discovered by
// Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
// passed arguments along to the real printf(). Also incorporated HUD changes
// by Michele America.
//
// Revision 1.38 1998/02/02 20:53:58 curt
// Incorporated Durk's changes.
//
// Revision 1.37 1998/02/01 03:39:54 curt
// Minor tweaks.
//
// Revision 1.36 1998/01/31 00:43:13 curt
// Added MetroWorks patches from Carmen Volpe.
//
// Revision 1.35 1998/01/27 00:47:57 curt
// Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
// system and commandline/config file processing code.
//
// Revision 1.34 1998/01/22 02:59:37 curt
// Changed #ifdef FILE_H to #ifdef _FILE_H
//
// Revision 1.33 1998/01/21 21:11:34 curt
// Misc. tweaks.
//
// Revision 1.32 1998/01/19 19:27:08 curt
// Merged in make system changes from Bob Kuehne <rpk@sgi.com>
// This should simplify things tremendously.
//
// Revision 1.31 1998/01/19 18:40:32 curt
// Tons of little changes to clean up the code and to remove fatal errors
// when building with the c++ compiler.
//
// Revision 1.30 1998/01/13 00:23:09 curt
// Initial changes to support loading and management of scenery tiles. Note,
// there's still a fair amount of work left to be done.
//
// Revision 1.29 1998/01/08 02:22:08 curt
// Beginning to integrate Tile management subsystem.
//
// Revision 1.28 1998/01/07 03:18:58 curt
// Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
//
// Revision 1.27 1998/01/05 18:44:35 curt
// Add an option to advance/decrease time from keyboard.
//
// Revision 1.26 1997/12/30 23:09:04 curt
// Tweaking initialization sequences.
//
// Revision 1.25 1997/12/30 22:22:33 curt
// Further integration of event manager.
//
// Revision 1.24 1997/12/30 20:47:44 curt
// Integrated new event manager with subsystem initializations.
//
// Revision 1.23 1997/12/30 16:36:50 curt
// Merged in Durk's changes ...
//
// Revision 1.22 1997/12/19 23:34:05 curt
// Lot's of tweaking with sky rendering and lighting.
//
// Revision 1.21 1997/12/19 16:45:00 curt
// Working on scene rendering order and options.
//
// Revision 1.20 1997/12/18 23:32:33 curt
// First stab at sky dome actually starting to look reasonable. :-)
//
// Revision 1.19 1997/12/17 23:13:36 curt
// Began working on rendering a sky.
//
// Revision 1.18 1997/12/15 23:54:49 curt
// Add xgl wrappers for debugging.
// Generate terrain normals on the fly.
//
// Revision 1.17 1997/12/15 20:59:09 curt
// Misc. tweaks.
//
// Revision 1.16 1997/12/12 19:52:48 curt
// Working on lightling and material properties.
//
// Revision 1.15 1997/12/11 04:43:55 curt
// Fixed sun vector and lighting problems. I thing the moon is now lit
// correctly.
//
// Revision 1.14 1997/12/10 22:37:47 curt
// Prepended "fg" on the name of all global structures that didn't have it yet.
// i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
//
// Revision 1.13 1997/11/25 19:25:32 curt
// Changes to integrate Durk's moon/sun code updates + clean up.
//
// Revision 1.12 1997/11/15 18:16:35 curt
// minor tweaks.
//
// Revision 1.11 1997/10/30 12:38:42 curt
// Working on new scenery subsystem.
//
// Revision 1.10 1997/10/25 03:24:23 curt
// Incorporated sun, moon, and star positioning code contributed by Durk Talsma.
//
// Revision 1.9 1997/09/23 00:29:39 curt
// Tweaks to get things to compile with gcc-win32.
//
// Revision 1.8 1997/09/22 14:44:20 curt
// Continuing to try to align stars correctly.
//
// Revision 1.7 1997/09/16 15:50:30 curt
// Working on star alignment and time issues.
//
// Revision 1.6 1997/09/05 14:17:30 curt
// More tweaking with stars.
//
// Revision 1.5 1997/09/04 02:17:36 curt
// Shufflin' stuff.
//
// Revision 1.4 1997/08/27 21:32:26 curt
// Restructured view calculation code. Added stars.
//
// Revision 1.3 1997/08/27 03:30:19 curt
// Changed naming scheme of basic shared structures.
//
// Revision 1.2 1997/08/25 20:27:23 curt
// Merged in initial HUD and Joystick code.
//
// Revision 1.1 1997/08/23 01:46:20 curt
// Initial revision.
//
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