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flightgear/Main/fg_init.c

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/**************************************************************************
* fg_init.c -- 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)
**************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <Main/fg_init.h>
#include <Main/views.h>
#include <Include/constants.h>
#include <Include/general.h>
#include <Aircraft/aircraft.h>
#include <Astro/moon.h>
#include <Astro/sky.h>
#include <Astro/stars.h>
#include <Astro/sun.h>
#include <Cockpit/cockpit.h>
#include <Joystick/joystick.h>
#include <Math/fg_random.h>
#include <Scenery/mesh.h>
#include <Scenery/scenery.h>
#include <Scenery/tilemgr.h>
#include <Time/event.h>
#include <Time/fg_time.h>
#include <Time/sunpos.h>
#include <Weather/weather.h>
extern int show_hud; /* HUD state */
extern int displayInstruments;
/* General house keeping initializations */
void fgInitGeneral( void ) {
struct fgGENERAL *g;
g = &general;
printf("General Initialization\n");
printf("======= ==============\n");
/* seed the random number generater */
fg_srandom();
/* determine the fg root path */
if ( (g->root_dir = getenv("FG_ROOT")) == NULL ) {
/* environment variable not defined */
printf("FG_ROOT needs to be defined! See the documentation.\n");
exit(0);
}
printf("FG_ROOT = %s\n", g->root_dir);
printf("\n");
}
/* 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.*/
void fgInitSubsystems( void ) {
double cur_elev;
struct fgFLIGHT *f;
struct fgLIGHT *l;
struct fgTIME *t;
struct fgVIEW *v;
f = &current_aircraft.flight;
l = &cur_light_params;
t = &cur_time_params;
v = &current_view;
printf("Initialize Subsystems\n");
printf("========== ==========\n");
/****************************************************************
* The following section sets up the flight model EOM parameters and
* should really be read in from one or more files.
****************************************************************/
/* Globe Aiport, AZ */
FG_Runway_longitude = -398391.28;
FG_Runway_latitude = 120070.41;
FG_Runway_altitude = 3234.5;
FG_Runway_heading = 102.0 * DEG_TO_RAD;
/* Initial Position at (P13) GLOBE airport */
FG_Longitude = ( -398391.28 / 3600.0 ) * DEG_TO_RAD;
FG_Latitude = ( 120070.41 / 3600.0 ) * DEG_TO_RAD;
FG_Runway_altitude = (3234.5 + 300);
FG_Altitude = FG_Runway_altitude + 3.758099;
/* Initial Position at (SEZ) SEDONA airport */
/* FG_Longitude = (-111.7884614 + 0.02) * DEG_TO_RAD; */
/* FG_Latitude = ( 34.8486289 - 0.04) * DEG_TO_RAD; */
/* FG_Runway_altitude = (4827 + 800); */
/* FG_Altitude = FG_Runway_altitude + 3.758099; */
/* Initial Position at (HSP) Hot Springs, VA */
/* FG_Longitude = (-79.8338964 + 0.02) * DEG_TO_RAD; */
/* FG_Latitude = ( 37.9514564 + 0.05) * DEG_TO_RAD; */
/* FG_Runway_altitude = (792 + 1500); */
/* FG_Altitude = FG_Runway_altitude + 3.758099; */
/* Initial Position at (ANE) Anoka County airport */
/* FG_Longitude = -93.2113889 * DEG_TO_RAD; */
/* FG_Latitude = 45.145 * DEG_TO_RAD; */
/* FG_Runway_altitude = 912; */
/* FG_Altitude = FG_Runway_altitude + 3.758099; */
/* Initial Position north of the city of Globe */
/* FGto do the install_Longitude = ( -398673.28 / 3600.0 ) * DEG_TO_RAD; */
/* FG_Latitude = ( 120625.64 / 3600.0 ) * DEG_TO_RAD; */
/* FG_Longitude = ( -397867.44 / 3600.0 ) * DEG_TO_RAD; */
/* FG_Latitude = ( 119548.21 / 3600.0 ) * DEG_TO_RAD; */
/* FG_Altitude = 0.0 + 3.758099; */
/* Initial Posisition near where I used to live in Globe, AZ */
/* FG_Longitude = ( -398757.6 / 3600.0 ) * DEG_TO_RAD; */
/* FG_Latitude = ( 120160.0 / 3600.0 ) * DEG_TO_RAD; */
/* FG_Runway_altitude = 5000.0; */
/* FG_Altitude = FG_Runway_altitude + 3.758099; */
/* Initial Position: 10125 Jewell St. NE */
/* FG_Longitude = ( -93.15 ) * DEG_TO_RAD; */
/* FG_Latitude = ( 45.15 ) * DEG_TO_RAD; */
/* FG_Altitude = FG_Runway_altitude + 3.758099; */
/* A random test position */
/* FG_Longitude = ( 88128.00 / 3600.0 ) * DEG_TO_RAD; */
/* FG_Latitude = ( 93312.00 / 3600.0 ) * DEG_TO_RAD; */
printf("Initial position is: (%.4f, %.4f, %.2f)\n",
FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG,
FG_Altitude * FEET_TO_METER);
/* 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 = -2.658474E-06;
FG_Theta = 7.401790E-03;
FG_Psi = 270.0 * 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;
/* Set initial position and slew parameters */
/* fgSlewInit(-398391.3, 120070.41, 244, 3.1415); */ /* GLOBE Airport */
/* fgSlewInit(-335340,162540, 15, 4.38); */
/* fgSlewInit(-398673.28,120625.64, 53, 4.38); */
/* Initialize the event manager */
fgEventInit();
/* Dump event stats every 60 seconds */
fgEventRegister( "fgEventPrintStats()", fgEventPrintStats,
FG_EVENT_READY, 60000 );
/* Initialize "time" */
fgTimeInit(t);
fgTimeUpdate(f, t);
/* fgViewUpdate() needs the sun in the right place, while
* fgUpdateSunPos() needs to know the view position. I'll get
* around this interdependency for now by calling fgUpdateSunPos()
* once, then moving on with normal initialization. */
fgUpdateSunPos();
/* Initialize view parameters */
fgViewInit(v);
fgViewUpdate(f, v, l);
/* Initialize shared sun position and sun_vec */
fgEventRegister( "fgUpdateSunPos()", fgUpdateSunPos, FG_EVENT_READY, 1000 );
/* Initialize the weather modeling subsystem */
fgWeatherInit();
/* update the weather for our current position */
fgEventRegister( "fgWeatherUpdate()", fgWeatherUpdate,
FG_EVENT_READY, 120000 );
/* Initialize the Cockpit subsystem */
if( fgCockpitInit( current_aircraft ) == NULL ) {
printf( "Error in Cockpit initialization!\n" );
exit( 1 );
}
/* Initialize the orbital elements of sun, moon and mayor planets */
fgSolarSystemInit(*t);
/* Initialize the Stars subsystem */
fgStarsInit();
/* Initialize the sun's position */
fgEventRegister( "fgSunInit()", fgSunInit, FG_EVENT_READY, 600000 );
/* Intialize the moon's position */
fgEventRegister( "fgMoonInit()", fgMoonInit, FG_EVENT_READY, 600000 );
/* Initialize the "sky" */
fgSkyInit();
/* Initialize the Scenery Management subsystem */
fgTileMgrInit();
/* fgSceneryInit(); */
/* Tell the Scenery Management system where we are so it can load
* the correct scenery data */
fgTileMgrUpdate();
/* fgSceneryUpdate(FG_Latitude, FG_Longitude, FG_Altitude); */
/* I'm just sticking this here for now, it should probably move
* eventually */
cur_elev = mesh_altitude(FG_Longitude * RAD_TO_DEG * 3600.0,
FG_Latitude * RAD_TO_DEG * 3600.0);
printf("True ground elevation is %.2f meters here.\n", cur_elev);
if ( cur_elev > -9990.0 ) {
FG_Runway_altitude = cur_elev * METER_TO_FEET;
}
if ( FG_Altitude < FG_Runway_altitude ) {
FG_Altitude = FG_Runway_altitude + 3.758099;
}
printf("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( FG_LARCSIM, f, 1.0 / DEFAULT_MODEL_HZ );
/* To HUD or not to HUD */
show_hud = 0;
/* Let's show the instrument panel */
displayInstruments = 0;
/* Joystick support */
fgJoystickInit( 0 );
/* One more try here to get the sky synced up */
fgSkyColorsInit();
printf("\n");
}
/* $Log$
/* 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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