3 * fg_init.c -- Flight Gear top level initialization routines
5 * Written by Curtis Olson, started August 1997.
7 * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of the
12 * License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 * (Log is kept at end of this file)
26 **************************************************************************/
32 #include <Main/fg_init.h>
33 #include <Main/views.h>
35 #include <Include/cmdargs.h>
36 #include <Include/fg_constants.h>
37 #include <Include/general.h>
39 #include <Aircraft/aircraft.h>
40 #include <Astro/moon.h>
41 #include <Astro/planets.h>
42 #include <Astro/sky.h>
43 #include <Astro/stars.h>
44 #include <Astro/sun.h>
45 #include <Cockpit/cockpit.h>
46 #include <Joystick/joystick.h>
47 #include <Math/fg_random.h>
48 #include <Scenery/scenery.h>
49 #include <Scenery/tilemgr.h>
50 #include <Time/event.h>
51 #include <Time/fg_time.h>
52 #include <Time/sunpos.h>
53 #include <Weather/weather.h>
54 #include <Main/fg_debug.h>
56 extern int show_hud; /* HUD state */
57 extern int displayInstruments;
58 extern const char *default_root;
60 /* General house keeping initializations */
62 int fgInitGeneral( void ) {
69 fgPrintf( FG_GENERAL, FG_INFO, "General Initialization\n" );
70 fgPrintf( FG_GENERAL, FG_INFO, "======= ==============\n" );
72 /* seed the random number generater */
75 // determine the fg root path. The command line parser getargs() will
76 // fill in a root directory if the option was used.
78 if( !(g->root_dir) ) {
79 // If not set by command line test for environmental var..
80 g->root_dir = getenv("FG_ROOT");
82 // No root path set? Then assume, we will exit if this is
83 // wrong when looking for support files.
84 g->root_dir = (char *)DefaultRootDir;
87 fgPrintf( FG_GENERAL, FG_INFO, "FG_ROOT = %s\n\n", g->root_dir);
89 // Dummy value can be changed if future initializations
90 // fail a critical task.
91 return ( 0 /* FALSE */ );
95 // This is the top level init routine which calls all the other
96 // initialization routines. If you are adding a subsystem to flight
97 // gear, its initialization call should located in this routine.
98 // Returns non-zero if a problem encountered.
100 int fgInitSubsystems( void ) {
103 // Ok will be flagged only if we get EVERYTHING done.
104 int ret_val = 1 /* TRUE */;
111 l = &cur_light_params;
112 t = &cur_time_params;
115 fgPrintf( FG_GENERAL, FG_INFO, "Initialize Subsystems\n");
116 fgPrintf( FG_GENERAL, FG_INFO, "========== ==========\n");
118 /****************************************************************
119 * The following section sets up the flight model EOM parameters and
120 * should really be read in from one or more files.
121 ****************************************************************/
123 /* Must happen before any of the flight model or control
124 * parameters are set */
126 fgAircraftInit(); // In the future this might not be the case.
127 f = current_aircraft.flight;
129 /* Globe Aiport, AZ */
130 FG_Runway_longitude = -398391.28;
131 FG_Runway_latitude = 120070.41;
132 FG_Runway_altitude = 3234.5;
133 FG_Runway_heading = 102.0 * DEG_TO_RAD;
135 /* Initial Position at (P13) Globe, AZ */
136 FG_Longitude = ( -398391.28 / 3600.0 ) * DEG_TO_RAD;
137 FG_Latitude = ( 120070.41 / 3600.0 ) * DEG_TO_RAD;
138 FG_Runway_altitude = (3234.5 + 300);
139 FG_Altitude = FG_Runway_altitude + 3.758099;
141 // Initial Position at (E81) Superior, AZ
142 // FG_Longitude = ( -111.1270650 ) * DEG_TO_RAD;
143 // FG_Latitude = ( 33.2778339 ) * DEG_TO_RAD;
144 // FG_Runway_altitude = (2646 + 1000);
145 // FG_Altitude = FG_Runway_altitude + 3.758099;
147 // Initial Position at (TUS) Tucson, AZ
148 // FG_Longitude = ( -110.9412597 ) * DEG_TO_RAD;
149 // FG_Latitude = ( 32.1162439 ) * DEG_TO_RAD;
150 // FG_Runway_altitude = (2641 + 0);
151 // FG_Altitude = FG_Runway_altitude + 3.758099;
153 /* Initial Position at near Anchoraze, AK */
154 /* FG_Longitude = ( -150.00 ) * DEG_TO_RAD; */
155 /* FG_Latitude = ( 61.17 ) * DEG_TO_RAD; */
156 /* FG_Runway_altitude = (2641 + 07777); */
157 /* FG_Altitude = FG_Runway_altitude + 3.758099; */
159 /* Initial Position at (SEZ) SEDONA airport */
160 /* FG_Longitude = (-111.7884614 + 0.02) * DEG_TO_RAD; */
161 /* FG_Latitude = ( 34.8486289 - 0.04) * DEG_TO_RAD; */
162 /* FG_Runway_altitude = (4827 + 800); */
163 /* FG_Altitude = FG_Runway_altitude + 3.758099; */
165 /* Initial Position at (HSP) Hot Springs, VA */
166 /* FG_Longitude = (-79.8338964 + 0.02) * DEG_TO_RAD; */
167 /* FG_Latitude = ( 37.9514564 + 0.05) * DEG_TO_RAD; */
168 /* FG_Runway_altitude = (792 + 1500); */
169 /* FG_Altitude = FG_Runway_altitude + 3.758099; */
171 /* Initial Position at (ANE) Anoka County airport */
172 /* FG_Longitude = -93.2113889 * DEG_TO_RAD; */
173 /* FG_Latitude = 45.145 * DEG_TO_RAD; */
174 /* FG_Runway_altitude = 912; */
175 /* FG_Altitude = FG_Runway_altitude + 3.758099; */
177 /* Initial Position north of the city of Globe */
178 /* FG_Longitude = ( -398673.28 / 3600.0 ) * DEG_TO_RAD; */
179 /* FG_Latitude = ( 120625.64 / 3600.0 ) * DEG_TO_RAD; */
180 /* FG_Longitude = ( -397867.44 / 3600.0 ) * DEG_TO_RAD; */
181 /* FG_Latitude = ( 119548.21 / 3600.0 ) * DEG_TO_RAD; */
182 /* FG_Altitude = 0.0 + 3.758099; */
184 /* Initial Posisition near where I used to live in Globe, AZ */
185 /* FG_Longitude = ( -398757.6 / 3600.0 ) * DEG_TO_RAD; */
186 /* FG_Latitude = ( 120160.0 / 3600.0 ) * DEG_TO_RAD; */
187 /* FG_Runway_altitude = 5000.0; */
188 /* FG_Altitude = FG_Runway_altitude + 3.758099; */
190 /* Initial Position: 10125 Jewell St. NE */
191 /* FG_Longitude = ( -93.15 ) * DEG_TO_RAD; */
192 /* FG_Latitude = ( 45.15 ) * DEG_TO_RAD; */
193 /* FG_Altitude = FG_Runway_altitude + 3.758099; */
195 // Initial Position: Somewhere near the Grand Canyon
196 FG_Longitude = ( -112.5 ) * DEG_TO_RAD;
197 FG_Latitude = ( 36.5 ) * DEG_TO_RAD;
198 FG_Runway_altitude = 5000.0;
199 FG_Altitude = FG_Runway_altitude + 3.758099;
201 // Initial Position: (GCN) Grand Canyon Airport, AZ
202 // FG_Longitude = ( -112.1469647 ) * DEG_TO_RAD;
203 // FG_Latitude = ( 35.9523539 ) * DEG_TO_RAD;
204 // FG_Runway_altitude = 6606.0;
205 // FG_Altitude = FG_Runway_altitude + 3.758099;
207 // Initial Position: Jim Brennon's Kingmont Observatory
208 // FG_Longitude = ( -121.1131666 ) * DEG_TO_RAD;
209 // FG_Latitude = ( 38.8293916 ) * DEG_TO_RAD;
210 // FG_Runway_altitude = 920.0 + 100;
211 // FG_Altitude = FG_Runway_altitude + 3.758099;
214 // FG_Longitude = ( -111.18 ) * DEG_TO_RAD;
215 // FG_Latitude = ( 33.70 ) * DEG_TO_RAD;
216 // FG_Runway_altitude = 5000.0;
217 // FG_Altitude = FG_Runway_altitude + 3.758099;
219 // A random test position
220 // FG_Longitude = ( 88128.00 / 3600.0 ) * DEG_TO_RAD;
221 // FG_Latitude = ( 93312.00 / 3600.0 ) * DEG_TO_RAD;
223 fgPrintf( FG_GENERAL, FG_INFO,
224 "Initial position is: (%.4f, %.4f, %.2f)\n",
225 FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG,
226 FG_Altitude * FEET_TO_METER);
228 /* Initial Velocity */
229 FG_V_north = 0.0 /* 7.287719E+00 */;
230 FG_V_east = 0.0 /* 1.521770E+03 */;
231 FG_V_down = 0.0 /* -1.265722E-05 */;
233 /* Initial Orientation */
234 FG_Phi = -2.658474E-06;
235 FG_Theta = 7.401790E-03;
236 FG_Psi = 270.0 * DEG_TO_RAD;
238 /* Initial Angular B rates */
239 FG_P_body = 7.206685E-05;
240 FG_Q_body = 0.000000E+00;
241 FG_R_body = 9.492658E-05;
243 FG_Earth_position_angle = 0.000000E+00;
245 /* Mass properties and geometry values */
246 FG_Mass = 8.547270E+01;
247 FG_I_xx = 1.048000E+03;
248 FG_I_yy = 3.000000E+03;
249 FG_I_zz = 3.530000E+03;
250 FG_I_xz = 0.000000E+00;
252 /* CG position w.r.t. ref. point */
253 FG_Dx_cg = 0.000000E+00;
254 FG_Dy_cg = 0.000000E+00;
255 FG_Dz_cg = 0.000000E+00;
257 /* Set initial position and slew parameters */
258 /* fgSlewInit(-398391.3, 120070.41, 244, 3.1415); */ /* GLOBE Airport */
259 /* fgSlewInit(-335340,162540, 15, 4.38); */
260 /* fgSlewInit(-398673.28,120625.64, 53, 4.38); */
262 /* Initialize the event manager */
265 /* Dump event stats every 60 seconds */
266 fgEventRegister( "fgEventPrintStats()", fgEventPrintStats,
267 FG_EVENT_READY, 60000 );
269 /* Initialize "time" */
273 /* fgViewUpdate() needs the sun in the right place, while
274 * fgUpdateSunPos() needs to know the view position. I'll get
275 * around this interdependency for now by calling fgUpdateSunPos()
276 * once, then moving on with normal initialization. */
279 /* Initialize view parameters */
281 fgViewUpdate(f, v, l);
283 /* Initialize shared sun position and sun_vec */
284 fgEventRegister( "fgUpdateSunPos()", fgUpdateSunPos, FG_EVENT_READY, 1000 );
286 /* Initialize the weather modeling subsystem */
289 /* update the weather for our current position */
290 fgEventRegister( "fgWeatherUpdate()", fgWeatherUpdate,
291 FG_EVENT_READY, 120000 );
293 /* Initialize the Cockpit subsystem */
294 if( fgCockpitInit( ¤t_aircraft )) {
295 // Cockpit initialized ok.
297 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Cockpit initialization!\n" );
300 // Initialize the orbital elements of sun, moon and mayor planets
301 fgSolarSystemInit(*t);
303 // Initialize the Stars subsystem
304 if( fgStarsInit() ) {
305 // Stars initialized ok.
307 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Stars initialization!\n" );
310 // Initialize the planetary subsystem
311 fgEventRegister("fgPlanetsInit()", fgPlanetsInit, FG_EVENT_READY, 600000);
313 // Initialize the sun's position
314 fgEventRegister("fgSunInit()", fgSunInit, FG_EVENT_READY, 60000 );
316 // Intialize the moon's position
317 fgEventRegister( "fgMoonInit()", fgMoonInit, FG_EVENT_READY, 600000 );
319 // Initialize the "sky"
322 // Initialize the Scenery Management subsystem
323 if( fgTileMgrInit() ) {
324 // Load the local scenery data
327 fgPrintf( FG_GENERAL, FG_EXIT,
328 "Error in Tile Manager initialization!\n" );
331 // I'm just sticking this here for now, it should probably move
333 // cur_elev = mesh_altitude(FG_Longitude * RAD_TO_DEG * 3600.0,
334 // FG_Latitude * RAD_TO_DEG * 3600.0); */
335 // fgPrintf( FG_GENERAL, FG_INFO,
336 // "True ground elevation is %.2f meters here.\n",
339 cur_elev = FG_Runway_altitude * FEET_TO_METER;
340 if ( cur_elev > -9990.0 ) {
341 FG_Runway_altitude = cur_elev * METER_TO_FEET;
344 if ( FG_Altitude < FG_Runway_altitude ) {
345 FG_Altitude = FG_Runway_altitude + 3.758099;
348 fgPrintf(FG_GENERAL, FG_INFO,
349 "Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
350 FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
351 FG_Altitude * FEET_TO_METER);
353 /* end of thing that I just stuck in that I should probably move */
355 /* Initialize the flight model subsystem data structures base on
358 fgFlightModelInit( FG_LARCSIM, f, 1.0 / DEFAULT_MODEL_HZ );
360 // To HUD or not to HUD - Now a command line issue
363 // Let's not show the instrument panel
364 displayInstruments = 0;
367 if (fgJoystickInit(0) ) {
368 // Joystick initialized ok.
370 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Joystick initialization!\n" );
373 // One more try here to get the sky synced up
377 fgPrintf(FG_GENERAL, FG_INFO,"\n");
383 /* Revision 1.47 1998/02/19 13:05:53 curt
384 /* Incorporated some HUD tweaks from Michelle America.
385 /* Tweaked the sky's sunset/rise colors.
386 /* Other misc. tweaks.
388 * Revision 1.46 1998/02/18 15:07:06 curt
389 * Tweaks to build with SGI OpenGL (and therefor hopefully other accelerated
390 * drivers will work.)
392 * Revision 1.45 1998/02/16 13:39:43 curt
393 * Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
394 * tiles to occasionally be missing.
396 * Revision 1.44 1998/02/12 21:59:50 curt
397 * Incorporated code changes contributed by Charlie Hotchkiss
398 * <chotchkiss@namg.us.anritsu.com>
400 * Revision 1.43 1998/02/11 02:50:40 curt
403 * Revision 1.42 1998/02/09 22:56:58 curt
404 * Removed "depend" files from cvs control. Other minor make tweaks.
406 * Revision 1.41 1998/02/09 15:07:50 curt
409 * Revision 1.40 1998/02/07 15:29:44 curt
410 * Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
411 * <chotchkiss@namg.us.anritsu.com>
413 * Revision 1.39 1998/02/03 23:20:25 curt
414 * Lots of little tweaks to fix various consistency problems discovered by
415 * Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
416 * passed arguments along to the real printf(). Also incorporated HUD changes
417 * by Michele America.
419 * Revision 1.38 1998/02/02 20:53:58 curt
420 * Incorporated Durk's changes.
422 * Revision 1.37 1998/02/01 03:39:54 curt
425 * Revision 1.36 1998/01/31 00:43:13 curt
426 * Added MetroWorks patches from Carmen Volpe.
428 * Revision 1.35 1998/01/27 00:47:57 curt
429 * Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
430 * system and commandline/config file processing code.
432 * Revision 1.34 1998/01/22 02:59:37 curt
433 * Changed #ifdef FILE_H to #ifdef _FILE_H
435 * Revision 1.33 1998/01/21 21:11:34 curt
438 * Revision 1.32 1998/01/19 19:27:08 curt
439 * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
440 * This should simplify things tremendously.
442 * Revision 1.31 1998/01/19 18:40:32 curt
443 * Tons of little changes to clean up the code and to remove fatal errors
444 * when building with the c++ compiler.
446 * Revision 1.30 1998/01/13 00:23:09 curt
447 * Initial changes to support loading and management of scenery tiles. Note,
448 * there's still a fair amount of work left to be done.
450 * Revision 1.29 1998/01/08 02:22:08 curt
451 * Beginning to integrate Tile management subsystem.
453 * Revision 1.28 1998/01/07 03:18:58 curt
454 * Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
456 * Revision 1.27 1998/01/05 18:44:35 curt
457 * Add an option to advance/decrease time from keyboard.
459 * Revision 1.26 1997/12/30 23:09:04 curt
460 * Tweaking initialization sequences.
462 * Revision 1.25 1997/12/30 22:22:33 curt
463 * Further integration of event manager.
465 * Revision 1.24 1997/12/30 20:47:44 curt
466 * Integrated new event manager with subsystem initializations.
468 * Revision 1.23 1997/12/30 16:36:50 curt
469 * Merged in Durk's changes ...
471 * Revision 1.22 1997/12/19 23:34:05 curt
472 * Lot's of tweaking with sky rendering and lighting.
474 * Revision 1.21 1997/12/19 16:45:00 curt
475 * Working on scene rendering order and options.
477 * Revision 1.20 1997/12/18 23:32:33 curt
478 * First stab at sky dome actually starting to look reasonable. :-)
480 * Revision 1.19 1997/12/17 23:13:36 curt
481 * Began working on rendering a sky.
483 * Revision 1.18 1997/12/15 23:54:49 curt
484 * Add xgl wrappers for debugging.
485 * Generate terrain normals on the fly.
487 * Revision 1.17 1997/12/15 20:59:09 curt
490 * Revision 1.16 1997/12/12 19:52:48 curt
491 * Working on lightling and material properties.
493 * Revision 1.15 1997/12/11 04:43:55 curt
494 * Fixed sun vector and lighting problems. I thing the moon is now lit
497 * Revision 1.14 1997/12/10 22:37:47 curt
498 * Prepended "fg" on the name of all global structures that didn't have it yet.
499 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
501 * Revision 1.13 1997/11/25 19:25:32 curt
502 * Changes to integrate Durk's moon/sun code updates + clean up.
504 * Revision 1.12 1997/11/15 18:16:35 curt
507 * Revision 1.11 1997/10/30 12:38:42 curt
508 * Working on new scenery subsystem.
510 * Revision 1.10 1997/10/25 03:24:23 curt
511 * Incorporated sun, moon, and star positioning code contributed by Durk Talsma.
513 * Revision 1.9 1997/09/23 00:29:39 curt
514 * Tweaks to get things to compile with gcc-win32.
516 * Revision 1.8 1997/09/22 14:44:20 curt
517 * Continuing to try to align stars correctly.
519 * Revision 1.7 1997/09/16 15:50:30 curt
520 * Working on star alignment and time issues.
522 * Revision 1.6 1997/09/05 14:17:30 curt
523 * More tweaking with stars.
525 * Revision 1.5 1997/09/04 02:17:36 curt
528 * Revision 1.4 1997/08/27 21:32:26 curt
529 * Restructured view calculation code. Added stars.
531 * Revision 1.3 1997/08/27 03:30:19 curt
532 * Changed naming scheme of basic shared structures.
534 * Revision 1.2 1997/08/25 20:27:23 curt
535 * Merged in initial HUD and Joystick code.
537 * Revision 1.1 1997/08/23 01:46:20 curt