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 **************************************************************************/
34 #include <Include/cmdargs.h>
35 #include <Include/fg_constants.h>
36 #include <Include/general.h>
38 #include <Aircraft/aircraft.h>
39 #include <Astro/moon.hxx>
40 #include <Astro/planets.hxx>
41 #include <Astro/sky.hxx>
42 #include <Astro/stars.hxx>
43 #include <Astro/sun.hxx>
44 #include <Autopilot/autopilot.h>
45 #include <Cockpit/cockpit.h>
46 #include <Debug/fg_debug.h>
47 #include <Joystick/joystick.h>
48 #include <Math/fg_random.h>
49 #include <Scenery/scenery.h>
50 #include <Scenery/tilemgr.hxx>
51 #include <Time/event.h>
52 #include <Time/fg_time.h>
53 #include <Time/light.hxx>
54 #include <Time/sunpos.hxx>
55 #include <Weather/weather.h>
57 #include "fg_init.hxx"
60 extern int show_hud; /* HUD state */
61 extern int displayInstruments;
62 extern const char *default_root;
64 /* General house keeping initializations */
66 int fgInitGeneral( void ) {
73 fgPrintf( FG_GENERAL, FG_INFO, "General Initialization\n" );
74 fgPrintf( FG_GENERAL, FG_INFO, "======= ==============\n" );
76 /* seed the random number generater */
79 // determine the fg root path. The command line parser getargs() will
80 // fill in a root directory if the option was used.
82 if( !(g->root_dir) ) {
83 // If not set by command line test for environmental var..
84 g->root_dir = getenv("FG_ROOT");
86 // No root path set? Then assume, we will exit if this is
87 // wrong when looking for support files.
88 g->root_dir = (char *)DefaultRootDir;
91 fgPrintf( FG_GENERAL, FG_INFO, "FG_ROOT = %s\n\n", g->root_dir);
93 // Dummy value can be changed if future initializations
94 // fail a critical task.
95 return ( 0 /* FALSE */ );
99 // This is the top level init routine which calls all the other
100 // initialization routines. If you are adding a subsystem to flight
101 // gear, its initialization call should located in this routine.
102 // Returns non-zero if a problem encountered.
104 int fgInitSubsystems( void ) {
107 // Ok will be flagged only if we get EVERYTHING done.
108 int ret_val = 1 /* TRUE */;
115 l = &cur_light_params;
116 t = &cur_time_params;
119 fgPrintf( FG_GENERAL, FG_INFO, "Initialize Subsystems\n");
120 fgPrintf( FG_GENERAL, FG_INFO, "========== ==========\n");
122 /****************************************************************
123 * The following section sets up the flight model EOM parameters and
124 * should really be read in from one or more files.
125 ****************************************************************/
127 // Must happen before any of the flight model or control
128 // parameters are set
130 fgAircraftInit(); // In the future this might not be the case.
131 f = current_aircraft.flight;
133 // Initial Position at (P13) Globe, AZ
134 FG_Longitude = ( -110.6642444 ) * DEG_TO_RAD;
135 FG_Latitude = ( 33.3528917 ) * DEG_TO_RAD;
136 FG_Runway_altitude = (3234.5 + 300);
137 FG_Altitude = FG_Runway_altitude + 3.758099;
139 // Initial Position at (E81) Superior, AZ
140 // FG_Longitude = ( -111.1270650 ) * DEG_TO_RAD;
141 // FG_Latitude = ( 33.2778339 ) * DEG_TO_RAD;
142 // FG_Runway_altitude = (2646 + 100);
143 // FG_Altitude = FG_Runway_altitude + 3.758099;
145 // Initial Position at (TUS) Tucson, AZ
146 // FG_Longitude = ( -110.9412597 ) * DEG_TO_RAD;
147 // FG_Latitude = ( 32.1162439 ) * DEG_TO_RAD;
148 // FG_Runway_altitude = (2641 + 0);
149 // FG_Altitude = FG_Runway_altitude + 3.758099;
151 // Initial Position at (SEZ) SEDONA airport
152 // FG_Longitude = (-111.7884614 + 0.01) * DEG_TO_RAD;
153 // FG_Latitude = ( 34.8486289 - 0.015) * DEG_TO_RAD;
154 // FG_Runway_altitude = (4827 + 450);
155 // FG_Altitude = FG_Runway_altitude + 3.758099;
157 // Initial Position at near Anchoraze, AK
158 // FG_Longitude = ( -152.00 ) * DEG_TO_RAD;
159 // FG_Latitude = ( 61.17 ) * DEG_TO_RAD;
160 // FG_Runway_altitude = (0);
161 // FG_Altitude = FG_Runway_altitude + 3.758099;
163 // Initial Position at (HSP) Hot Springs, VA
164 // FG_Longitude = (-79.8338964 + 0.01) * DEG_TO_RAD;
165 // FG_Latitude = ( 37.9514564 + 0.008) * DEG_TO_RAD;
166 // FG_Runway_altitude = (3792 + 1300);
167 // FG_Altitude = FG_Runway_altitude + 3.758099;
169 // Initial Position at (ANE) Anoka County airport
170 // FG_Longitude = -93.2113889 * DEG_TO_RAD;
171 // FG_Latitude = 45.145 * DEG_TO_RAD;
172 // FG_Runway_altitude = 912;
173 // FG_Altitude = FG_Runway_altitude + 3.758099;
175 // Initial Position north of the city of Globe
176 // FG_Longitude = ( -398673.28 / 3600.0 ) * DEG_TO_RAD;
177 // FG_Latitude = ( 120625.64 / 3600.0 ) * DEG_TO_RAD;
178 // FG_Longitude = ( -397867.44 / 3600.0 ) * DEG_TO_RAD;
179 // FG_Latitude = ( 119548.21 / 3600.0 ) * DEG_TO_RAD;
180 // FG_Altitude = 0.0 + 3.758099;
182 // Initial Position near where I used to live in Globe, AZ
183 // FG_Longitude = ( -398757.6 / 3600.0 ) * DEG_TO_RAD;
184 // FG_Latitude = ( 120160.0 / 3600.0 ) * DEG_TO_RAD;
185 // FG_Runway_altitude = 4000.0;
186 // FG_Altitude = FG_Runway_altitude + 3.758099;
188 // Initial Position: 10125 Jewell St. NE
189 // FG_Longitude = ( -93.15 ) * DEG_TO_RAD;
190 // FG_Latitude = ( 45.15 ) * DEG_TO_RAD;
191 // FG_Runway_altitude = 950.0;
192 // FG_Altitude = FG_Runway_altitude + 3.758099;
194 // Initial Position: Somewhere near the Grand Canyon
195 // FG_Longitude = ( -112.5 ) * DEG_TO_RAD;
196 // FG_Latitude = ( 36.5 ) * DEG_TO_RAD;
197 // FG_Runway_altitude = 8000.0;
198 // FG_Altitude = FG_Runway_altitude + 3.758099;
200 // Initial Position: (GCN) Grand Canyon Airport, AZ
201 // FG_Longitude = ( -112.1469647 ) * DEG_TO_RAD;
202 // FG_Latitude = ( 35.9523539 ) * DEG_TO_RAD;
203 // FG_Runway_altitude = 6606.0;
204 // FG_Altitude = FG_Runway_altitude + 3.758099;
206 // Initial Position: Jim Brennon's Kingmont Observatory
207 // FG_Longitude = ( -121.1131667 ) * DEG_TO_RAD;
208 // FG_Latitude = ( 38.8293917 ) * DEG_TO_RAD;
209 // FG_Runway_altitude = 920.0;
210 // FG_Altitude = FG_Runway_altitude + 3.758099;
212 // probably interesting for european team members
213 // That is: If I can get the scenery to work -;) (Durk)
215 // Initial Position: Groningen Airport Eelde, the netherlands
216 // FG_Longitude = ( 6.583333 ) * DEG_TO_RAD;
217 // FG_Latitude = ( 53.125 ) * DEG_TO_RAD;
218 // FG_Runway_altitude = 920.0;
219 // FG_Altitude = FG_Runway_altitude + 3.758099;
221 // Initial Position: Schiphol Amsterdam Airport, the netherlands
222 // FG_Longitude = ( -4.7641667 ) * DEG_TO_RAD;
223 // FG_Latitude = ( 52.308056 ) * DEG_TO_RAD;
224 // FG_Runway_altitude = 920.0;
225 // FG_Altitude = FG_Runway_altitude + 3.758099;
227 // Eclipse Watching w73.5 n10 (approx) 18:00 UT
228 // FG_Longitude = ( -73.5 ) * DEG_TO_RAD;
229 // FG_Latitude = ( 10.0 ) * DEG_TO_RAD;
230 // FG_Runway_altitude = 0.0;
231 // FG_Altitude = FG_Runway_altitude + 3.758099;
234 // FG_Longitude = ( -109.5 ) * DEG_TO_RAD;
235 // FG_Latitude = ( 32.5 ) * DEG_TO_RAD;
236 // FG_Runway_altitude = (2646 + 2000);
237 // FG_Altitude = FG_Runway_altitude + 3.758099;
239 fgPrintf( FG_GENERAL, FG_INFO,
240 "Initial position is: (%.4f, %.4f, %.2f)\n",
241 FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG,
242 FG_Altitude * FEET_TO_METER);
245 FG_V_north = 0.0 /* 7.287719E+00 */;
246 FG_V_east = 0.0 /* 1.521770E+03 */;
247 FG_V_down = 0.0 /* -1.265722E-05 */;
249 // Initial Orientation
250 FG_Phi = -2.658474E-06;
251 FG_Theta = 7.401790E-03;
252 FG_Psi = 270.0 * DEG_TO_RAD;
254 // Initial Angular B rates
255 FG_P_body = 7.206685E-05;
256 FG_Q_body = 0.000000E+00;
257 FG_R_body = 9.492658E-05;
259 FG_Earth_position_angle = 0.000000E+00;
261 // Mass properties and geometry values
262 FG_Mass = 8.547270E+01;
263 FG_I_xx = 1.048000E+03;
264 FG_I_yy = 3.000000E+03;
265 FG_I_zz = 3.530000E+03;
266 FG_I_xz = 0.000000E+00;
268 // CG position w.r.t. ref. point
269 FG_Dx_cg = 0.000000E+00;
270 FG_Dy_cg = 0.000000E+00;
271 FG_Dz_cg = 0.000000E+00;
273 // Set initial position and slew parameters
274 // fgSlewInit(-398391.3, 120070.41, 244, 3.1415); // GLOBE Airport
275 // fgSlewInit(-335340,162540, 15, 4.38);
276 // fgSlewInit(-398673.28,120625.64, 53, 4.38);
278 // Initialize the event manager
281 // Dump event stats every 60 seconds
282 fgEventRegister( "fgEventPrintStats()", fgEventPrintStats,
283 FG_EVENT_READY, 60000 );
289 // fgViewUpdate() needs the sun in the right place, while
290 // fgUpdateSunPos() needs to know the view position. I'll get
291 // around this interdependency for now by calling fgUpdateSunPos()
292 // once, then moving on with normal initialization.
295 // Initialize view parameters
297 fgViewUpdate(f, v, l);
299 // Initialize Lighting interpolation tables
302 // update the lighting parameters (based on sun angle)
303 fgEventRegister( "fgLightUpdate()", fgLightUpdate,
304 FG_EVENT_READY, 30000 );
306 // Initialize the weather modeling subsystem
309 // update the weather for our current position
310 fgEventRegister( "fgWeatherUpdate()", fgWeatherUpdate,
311 FG_EVENT_READY, 120000 );
313 // Initialize the Cockpit subsystem
314 if( fgCockpitInit( ¤t_aircraft )) {
315 // Cockpit initialized ok.
317 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Cockpit initialization!\n" );
320 // Initialize the orbital elements of sun, moon and mayor planets
321 fgSolarSystemInit(*t);
323 // Initialize the Stars subsystem
324 if( fgStarsInit() ) {
325 // Stars initialized ok.
327 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Stars initialization!\n" );
330 // Initialize the planetary subsystem
331 fgEventRegister("fgPlanetsInit()", fgPlanetsInit, FG_EVENT_READY, 600000);
333 // Initialize the sun's position
334 fgEventRegister("fgSunInit()", fgSunInit, FG_EVENT_READY, 30000 );
336 // Intialize the moon's position
337 fgEventRegister( "fgMoonInit()", fgMoonInit, FG_EVENT_READY, 600000 );
339 // Initialize the "sky"
342 // Initialize the Scenery Management subsystem
343 if ( fgSceneryInit() ) {
344 // Scenery initialized ok.
346 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Scenery initialization!\n" );
350 if( fgTileMgrInit() ) {
351 // Load the local scenery data
354 fgPrintf( FG_GENERAL, FG_EXIT,
355 "Error in Tile Manager initialization!\n" );
358 // I'm just sticking this here for now, it should probably move
360 // cur_elev = mesh_altitude(FG_Longitude * RAD_TO_DEG * 3600.0,
361 // FG_Latitude * RAD_TO_DEG * 3600.0);
362 // fgPrintf( FG_GENERAL, FG_INFO,
363 // "True ground elevation is %.2f meters here.\n",
366 cur_elev = FG_Runway_altitude * FEET_TO_METER;
367 if ( cur_elev > -9990.0 ) {
368 FG_Runway_altitude = cur_elev * METER_TO_FEET;
371 if ( FG_Altitude < FG_Runway_altitude ) {
372 FG_Altitude = FG_Runway_altitude + 3.758099;
375 fgPrintf(FG_GENERAL, FG_INFO,
376 "Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
377 FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
378 FG_Altitude * FEET_TO_METER);
380 // end of thing that I just stuck in that I should probably move
382 // Initialize the flight model subsystem data structures base on
385 fgFlightModelInit( FG_LARCSIM, f, 1.0 / DEFAULT_MODEL_HZ );
387 // To HUD or not to HUD - Now a command line issue
390 // Let's not show the instrument panel
391 displayInstruments = 0;
394 if (fgJoystickInit(0) ) {
395 // Joystick initialized ok.
397 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Joystick initialization!\n" );
400 // Autopilot init added here, by Jeff Goeke-Smith
401 fgAPInit(¤t_aircraft);
402 // end added section;
404 // One more try here to get the sky synced up
408 fgPrintf(FG_GENERAL, FG_INFO,"\n");
414 /* Revision 1.1 1998/04/22 13:25:44 curt
415 /* C++ - ifing the code.
416 /* Starting a bit of reorganization of lighting code.
418 * Revision 1.56 1998/04/18 04:11:28 curt
419 * Moved fg_debug to it's own library, added zlib support.
421 * Revision 1.55 1998/04/14 02:21:03 curt
422 * Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
423 * <jgoeke@voyager.net>
425 * Revision 1.54 1998/04/08 23:35:36 curt
426 * Tweaks to Gnu automake/autoconf system.
428 * Revision 1.53 1998/04/03 22:09:06 curt
429 * Converting to Gnu autoconf system.
431 * Revision 1.52 1998/03/23 21:24:38 curt
432 * Source code formating tweaks.
434 * Revision 1.51 1998/03/14 00:31:22 curt
435 * Beginning initial terrain texturing experiments.
437 * Revision 1.50 1998/03/09 22:46:19 curt
440 * Revision 1.49 1998/02/23 19:07:59 curt
441 * Incorporated Durk's Astro/ tweaks. Includes unifying the sun position
442 * calculation code between sun display, and other FG sections that use this
443 * for things like lighting.
445 * Revision 1.48 1998/02/21 14:53:15 curt
446 * Added Charlie's HUD changes.
448 * Revision 1.47 1998/02/19 13:05:53 curt
449 * Incorporated some HUD tweaks from Michelle America.
450 * Tweaked the sky's sunset/rise colors.
451 * Other misc. tweaks.
453 * Revision 1.46 1998/02/18 15:07:06 curt
454 * Tweaks to build with SGI OpenGL (and therefor hopefully other accelerated
455 * drivers will work.)
457 * Revision 1.45 1998/02/16 13:39:43 curt
458 * Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
459 * tiles to occasionally be missing.
461 * Revision 1.44 1998/02/12 21:59:50 curt
462 * Incorporated code changes contributed by Charlie Hotchkiss
463 * <chotchkiss@namg.us.anritsu.com>
465 * Revision 1.43 1998/02/11 02:50:40 curt
468 * Revision 1.42 1998/02/09 22:56:58 curt
469 * Removed "depend" files from cvs control. Other minor make tweaks.
471 * Revision 1.41 1998/02/09 15:07:50 curt
474 * Revision 1.40 1998/02/07 15:29:44 curt
475 * Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
476 * <chotchkiss@namg.us.anritsu.com>
478 * Revision 1.39 1998/02/03 23:20:25 curt
479 * Lots of little tweaks to fix various consistency problems discovered by
480 * Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
481 * passed arguments along to the real printf(). Also incorporated HUD changes
482 * by Michele America.
484 * Revision 1.38 1998/02/02 20:53:58 curt
485 * Incorporated Durk's changes.
487 * Revision 1.37 1998/02/01 03:39:54 curt
490 * Revision 1.36 1998/01/31 00:43:13 curt
491 * Added MetroWorks patches from Carmen Volpe.
493 * Revision 1.35 1998/01/27 00:47:57 curt
494 * Incorporated Paul Bleisch's <bleisch@chromatic.com> new debug message
495 * system and commandline/config file processing code.
497 * Revision 1.34 1998/01/22 02:59:37 curt
498 * Changed #ifdef FILE_H to #ifdef _FILE_H
500 * Revision 1.33 1998/01/21 21:11:34 curt
503 * Revision 1.32 1998/01/19 19:27:08 curt
504 * Merged in make system changes from Bob Kuehne <rpk@sgi.com>
505 * This should simplify things tremendously.
507 * Revision 1.31 1998/01/19 18:40:32 curt
508 * Tons of little changes to clean up the code and to remove fatal errors
509 * when building with the c++ compiler.
511 * Revision 1.30 1998/01/13 00:23:09 curt
512 * Initial changes to support loading and management of scenery tiles. Note,
513 * there's still a fair amount of work left to be done.
515 * Revision 1.29 1998/01/08 02:22:08 curt
516 * Beginning to integrate Tile management subsystem.
518 * Revision 1.28 1998/01/07 03:18:58 curt
519 * Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
521 * Revision 1.27 1998/01/05 18:44:35 curt
522 * Add an option to advance/decrease time from keyboard.
524 * Revision 1.26 1997/12/30 23:09:04 curt
525 * Tweaking initialization sequences.
527 * Revision 1.25 1997/12/30 22:22:33 curt
528 * Further integration of event manager.
530 * Revision 1.24 1997/12/30 20:47:44 curt
531 * Integrated new event manager with subsystem initializations.
533 * Revision 1.23 1997/12/30 16:36:50 curt
534 * Merged in Durk's changes ...
536 * Revision 1.22 1997/12/19 23:34:05 curt
537 * Lot's of tweaking with sky rendering and lighting.
539 * Revision 1.21 1997/12/19 16:45:00 curt
540 * Working on scene rendering order and options.
542 * Revision 1.20 1997/12/18 23:32:33 curt
543 * First stab at sky dome actually starting to look reasonable. :-)
545 * Revision 1.19 1997/12/17 23:13:36 curt
546 * Began working on rendering a sky.
548 * Revision 1.18 1997/12/15 23:54:49 curt
549 * Add xgl wrappers for debugging.
550 * Generate terrain normals on the fly.
552 * Revision 1.17 1997/12/15 20:59:09 curt
555 * Revision 1.16 1997/12/12 19:52:48 curt
556 * Working on lightling and material properties.
558 * Revision 1.15 1997/12/11 04:43:55 curt
559 * Fixed sun vector and lighting problems. I thing the moon is now lit
562 * Revision 1.14 1997/12/10 22:37:47 curt
563 * Prepended "fg" on the name of all global structures that didn't have it yet.
564 * i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
566 * Revision 1.13 1997/11/25 19:25:32 curt
567 * Changes to integrate Durk's moon/sun code updates + clean up.
569 * Revision 1.12 1997/11/15 18:16:35 curt
572 * Revision 1.11 1997/10/30 12:38:42 curt
573 * Working on new scenery subsystem.
575 * Revision 1.10 1997/10/25 03:24:23 curt
576 * Incorporated sun, moon, and star positioning code contributed by Durk Talsma.
578 * Revision 1.9 1997/09/23 00:29:39 curt
579 * Tweaks to get things to compile with gcc-win32.
581 * Revision 1.8 1997/09/22 14:44:20 curt
582 * Continuing to try to align stars correctly.
584 * Revision 1.7 1997/09/16 15:50:30 curt
585 * Working on star alignment and time issues.
587 * Revision 1.6 1997/09/05 14:17:30 curt
588 * More tweaking with stars.
590 * Revision 1.5 1997/09/04 02:17:36 curt
593 * Revision 1.4 1997/08/27 21:32:26 curt
594 * Restructured view calculation code. Added stars.
596 * Revision 1.3 1997/08/27 03:30:19 curt
597 * Changed naming scheme of basic shared structures.
599 * Revision 1.2 1997/08/25 20:27:23 curt
600 * Merged in initial HUD and Joystick code.
602 * Revision 1.1 1997/08/23 01:46:20 curt