2 // fg_init.cxx -- Flight Gear top level initialization routines
4 // Written by Curtis Olson, started August 1997.
6 // Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 // (Log is kept at end of this file)
34 // work around a stdc++ lib bug in some versions of linux, but doesn't
35 // seem to hurt to have this here for all versions of Linux.
37 # define _G_NO_EXTERN_TEMPLATES
42 #include <Include/fg_constants.h>
43 #include <Include/general.h>
45 #include <Aircraft/aircraft.hxx>
46 #include <Airports/simple.hxx>
47 #include <Astro/sky.hxx>
48 #include <Astro/stars.hxx>
49 #include <Astro/solarsystem.hxx>
50 #include <Autopilot/autopilot.hxx>
51 #include <Cockpit/cockpit.hxx>
52 #include <Debug/fg_debug.h>
53 #include <Joystick/joystick.h>
54 #include <Math/fg_geodesy.hxx>
55 #include <Math/fg_random.h>
56 #include <Math/point3d.hxx>
57 #include <Math/polar3d.hxx>
58 #include <Scenery/scenery.hxx>
59 #include <Scenery/tilemgr.hxx>
60 #include <Time/event.hxx>
61 #include <Time/fg_time.hxx>
62 #include <Time/light.hxx>
63 #include <Time/sunpos.hxx>
64 #include <Weather/weather.hxx>
66 #include "fg_init.hxx"
67 #include "options.hxx"
71 extern const char *default_root;
74 // Set initial position and orientation
75 int fgInitPosition( void ) {
79 f = current_aircraft.flight;
81 id = current_options.get_airport_id();
83 // set initial position from airport id
88 fgPrintf( FG_GENERAL, FG_INFO,
89 "Attempting to set starting position from airport code %s.\n",
92 airports.load("apt_simple");
93 if ( ! airports.search( id, &a ) ) {
94 fgPrintf( FG_GENERAL, FG_EXIT,
95 "Failed to find %s in database.\n", id.c_str() );
97 FG_Longitude = a.longitude * DEG_TO_RAD;
98 FG_Latitude = a.latitude * DEG_TO_RAD;
101 // set initial position from default or command line coordinates
103 FG_Longitude = current_options.get_lon() * DEG_TO_RAD;
104 FG_Latitude = current_options.get_lat() * DEG_TO_RAD;
106 printf("starting altitude is = %.2f\n", current_options.get_altitude());
108 FG_Altitude = current_options.get_altitude() * METER_TO_FEET;
109 FG_Runway_altitude = FG_Altitude - 3.758099;
111 fgPrintf( FG_GENERAL, FG_INFO,
112 "Initial position is: (%.4f, %.4f, %.2f)\n",
113 FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG,
114 FG_Altitude * FEET_TO_METER);
120 // General house keeping initializations
121 int fgInitGeneral( void ) {
128 fgPrintf( FG_GENERAL, FG_INFO, "General Initialization\n" );
129 fgPrintf( FG_GENERAL, FG_INFO, "======= ==============\n" );
131 g->glVendor = (char *)glGetString ( GL_VENDOR );
132 g->glRenderer = (char *)glGetString ( GL_RENDERER );
133 g->glVersion = (char *)glGetString ( GL_VERSION );
135 root = current_options.get_fg_root();
136 if ( ! root.length() ) {
137 // No root path set? Then bail ...
138 fgPrintf( FG_GENERAL, FG_EXIT, "%s %s\n",
139 "Cannot continue without environment variable FG_ROOT",
142 fgPrintf( FG_GENERAL, FG_INFO, "FG_ROOT = %s\n\n", root.c_str() );
144 // prime the frame rate counter pump
145 for ( i = 0; i < FG_FRAME_RATE_HISTORY; i++ ) {
153 // This is the top level init routine which calls all the other
154 // initialization routines. If you are adding a subsystem to flight
155 // gear, its initialization call should located in this routine.
156 // Returns non-zero if a problem encountered.
157 int fgInitSubsystems( void )
163 Point3D geod_pos, abs_view_pos;
165 l = &cur_light_params;
166 t = &cur_time_params;
169 fgPrintf( FG_GENERAL, FG_INFO, "Initialize Subsystems\n");
170 fgPrintf( FG_GENERAL, FG_INFO, "========== ==========\n");
172 // seed the random number generater
175 // allocates structures so must happen before any of the flight
176 // model or control parameters are set
177 fgAircraftInit(); // In the future this might not be the case.
178 f = current_aircraft.flight;
180 // set the initial position
183 // Initialize the Scenery Management subsystem
184 if ( fgSceneryInit() ) {
185 // Scenery initialized ok.
187 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Scenery initialization!\n" );
190 if( fgTileMgrInit() ) {
191 // Load the local scenery data
194 fgPrintf( FG_GENERAL, FG_EXIT,
195 "Error in Tile Manager initialization!\n" );
198 // calculalate a cartesian point somewhere along the line between
199 // the center of the earth and our view position. Doesn't have to
200 // be the exact elevation (this is good because we don't know it
202 geod_pos = Point3D( FG_Longitude, FG_Latitude, 0.0);
203 abs_view_pos = fgGeodToCart(geod_pos);
205 // Calculate ground elevation at starting point
207 fgTileMgrCurElev( FG_Longitude, FG_Latitude, abs_view_pos );
208 FG_Runway_altitude = scenery.cur_elev * METER_TO_FEET;
210 // Reset our altitude if we are below ground
211 if ( FG_Altitude < FG_Runway_altitude + 3.758099) {
212 FG_Altitude = FG_Runway_altitude + 3.758099;
215 fgPrintf( FG_GENERAL, FG_INFO,
216 "Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
217 FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
218 FG_Altitude * FEET_TO_METER);
219 // end of thing that I just stuck in that I should probably move
221 // The following section sets up the flight model EOM parameters
222 // and should really be read in from one or more files.
225 FG_V_north = 0.0; // 7.287719E+00
226 FG_V_east = 0.0; // 1.521770E+03
227 FG_V_down = 0.0; // -1.265722E-05
229 // Initial Orientation
230 FG_Phi = current_options.get_roll() * DEG_TO_RAD;
231 FG_Theta = current_options.get_pitch() * DEG_TO_RAD;
232 FG_Psi = current_options.get_heading() * DEG_TO_RAD;
234 // Initial Angular B rates
235 FG_P_body = 7.206685E-05;
236 FG_Q_body = 0.000000E+00;
237 FG_R_body = 9.492658E-05;
239 FG_Earth_position_angle = 0.000000E+00;
241 // Mass properties and geometry values
242 FG_Mass = 8.547270E+01;
243 FG_I_xx = 1.048000E+03;
244 FG_I_yy = 3.000000E+03;
245 FG_I_zz = 3.530000E+03;
246 FG_I_xz = 0.000000E+00;
248 // CG position w.r.t. ref. point
249 FG_Dx_cg = 0.000000E+00;
250 FG_Dy_cg = 0.000000E+00;
251 FG_Dz_cg = 0.000000E+00;
253 // Initialize the event manager
254 global_events.Init();
256 // Output event stats every 60 seconds
257 global_events.Register( "fgEVENT_MGR::PrintStats()",
258 fgMethodCallback<fgEVENT_MGR>( &global_events,
259 &fgEVENT_MGR::PrintStats),
260 fgEVENT::FG_EVENT_READY, 60000 );
262 // Initialize the time dependent variables
266 // Initialize view parameters
268 v->UpdateViewMath(f);
269 v->UpdateWorldToEye(f);
271 // Build the solar system
272 //fgSolarSystemInit(*t);
273 fgPrintf(FG_GENERAL, FG_INFO, "Building SolarSystem\n");
274 SolarSystem::theSolarSystem = new SolarSystem(t);
276 // Initialize the Stars subsystem
277 if( fgStarsInit() ) {
278 // Stars initialized ok.
280 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Stars initialization!\n" );
283 // Initialize the planetary subsystem
284 // global_events.Register( "fgPlanetsInit()", fgPlanetsInit,
285 // fgEVENT::FG_EVENT_READY, 600000);
287 // Initialize the sun's position
288 // global_events.Register( "fgSunInit()", fgSunInit,
289 // fgEVENT::FG_EVENT_READY, 30000 );
291 // Intialize the moon's position
292 // global_events.Register( "fgMoonInit()", fgMoonInit,
293 // fgEVENT::FG_EVENT_READY, 600000 );
295 // register the periodic update of Sun, moon, and planets
296 global_events.Register( "ssolsysUpdate", solarSystemRebuild,
297 fgEVENT::FG_EVENT_READY, 600000);
299 // fgUpdateSunPos() needs a few position and view parameters set
300 // so it can calculate local relative sun angle and a few other
301 // things for correctly orienting the sky.
303 global_events.Register( "fgUpdateSunPos()", fgUpdateSunPos,
304 fgEVENT::FG_EVENT_READY, 60000);
306 // Initialize Lighting interpolation tables
309 // update the lighting parameters (based on sun angle)
310 global_events.Register( "fgLight::Update()",
311 fgMethodCallback<fgLIGHT>( &cur_light_params,
313 fgEVENT::FG_EVENT_READY, 30000 );
315 // Initialize the weather modeling subsystem
318 // Initialize the Cockpit subsystem
319 if( fgCockpitInit( ¤t_aircraft )) {
320 // Cockpit initialized ok.
322 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Cockpit initialization!\n" );
325 // Initialize the "sky"
328 // Initialize the flight model subsystem data structures base on
331 fgFlightModelInit( current_options.get_flight_model(), f,
332 1.0 / DEFAULT_MODEL_HZ );
334 // I'm just sticking this here for now, it should probably move
336 scenery.cur_elev = FG_Runway_altitude * FEET_TO_METER;
338 if ( FG_Altitude < FG_Runway_altitude + 3.758099) {
339 FG_Altitude = FG_Runway_altitude + 3.758099;
342 fgPrintf( FG_GENERAL, FG_INFO,
343 "Updated position (after elevation adj): (%.4f, %.4f, %.2f)\n",
344 FG_Latitude * RAD_TO_DEG, FG_Longitude * RAD_TO_DEG,
345 FG_Altitude * FEET_TO_METER);
346 // end of thing that I just stuck in that I should probably move
349 if (fgJoystickInit(0) ) {
350 // Joystick initialized ok.
352 fgPrintf( FG_GENERAL, FG_EXIT, "Error in Joystick initialization!\n" );
355 // Autopilot init added here, by Jeff Goeke-Smith
356 fgAPInit(¤t_aircraft);
358 fgPrintf(FG_GENERAL, FG_INFO,"\n");
365 // Revision 1.44 1998/10/18 01:17:17 curt
368 // Revision 1.43 1998/10/17 01:34:22 curt
371 // Revision 1.42 1998/10/16 23:27:54 curt
374 // Revision 1.41 1998/10/16 00:54:01 curt
375 // Converted to Point3D class.
377 // Revision 1.40 1998/10/02 12:46:49 curt
378 // Added an "auto throttle"
380 // Revision 1.39 1998/09/29 02:03:39 curt
383 // Revision 1.38 1998/09/15 04:27:30 curt
384 // Changes for new Astro code.
386 // Revision 1.37 1998/09/15 02:09:26 curt
387 // Include/fg_callback.hxx
388 // Moved code inline to stop g++ 2.7 from complaining.
390 // Simulator/Time/event.[ch]xx
391 // Changed return type of fgEVENT::printStat(). void caused g++ 2.7 to
392 // complain bitterly.
394 // Minor bugfix and changes.
396 // Simulator/Main/GLUTmain.cxx
397 // Added missing type to idle_state definition - eliminates a warning.
399 // Simulator/Main/fg_init.cxx
400 // Changes to airport lookup.
402 // Simulator/Main/options.cxx
403 // Uses fg_gzifstream when loading config file.
405 // Revision 1.36 1998/09/08 21:40:08 curt
406 // Fixes by Charlie Hotchkiss.
408 // Revision 1.35 1998/08/29 13:09:26 curt
409 // Changes to event manager from Bernie Bright.
411 // Revision 1.34 1998/08/27 17:02:06 curt
412 // Contributions from Bernie Bright <bbright@c031.aone.net.au>
413 // - use strings for fg_root and airport_id and added methods to return
415 // - inlined all access methods,
416 // - made the parsing functions private methods,
417 // - deleted some unused functions.
418 // - propogated some of these changes out a bit further.
420 // Revision 1.33 1998/08/25 20:53:32 curt
421 // Shuffled $FG_ROOT file layout.
423 // Revision 1.32 1998/08/25 16:59:09 curt
424 // Directory reshuffling.
426 // Revision 1.31 1998/08/22 14:49:57 curt
427 // Attempting to iron out seg faults and crashes.
428 // Did some shuffling to fix a initialization order problem between view
429 // position, scenery elevation.
431 // Revision 1.30 1998/08/20 20:32:33 curt
432 // Reshuffled some of the code in and around views.[ch]xx
434 // Revision 1.29 1998/07/30 23:48:27 curt
435 // Output position & orientation when pausing.
436 // Eliminated libtool use.
437 // Added options to specify initial position and orientation.
438 // Changed default fov to 55 degrees.
439 // Added command line option to start in paused or unpaused state.
441 // Revision 1.28 1998/07/27 18:41:25 curt
442 // Added a pause command "p"
443 // Fixed some initialization order problems between pui and glut.
444 // Added an --enable/disable-sound option.
446 // Revision 1.27 1998/07/24 21:39:10 curt
447 // Debugging output tweaks.
448 // Cast glGetString to (char *) to avoid compiler errors.
449 // Optimizations to fgGluLookAt() by Norman Vine.
451 // Revision 1.26 1998/07/22 21:40:44 curt
452 // Clear to adjusted fog color (for sunrise/sunset effects)
453 // Make call to fog sunrise/sunset adjustment method.
454 // Add a stdc++ library bug work around to fg_init.cxx
456 // Revision 1.25 1998/07/13 21:01:38 curt
457 // Wrote access functions for current fgOPTIONS.
459 // Revision 1.24 1998/07/13 15:32:39 curt
460 // Clear color buffer if drawing wireframe.
461 // When specifying and airport, start elevation at -1000 and let the system
462 // position you at ground level.
464 // Revision 1.23 1998/07/12 03:14:43 curt
465 // Added ground collision detection.
466 // Did some serious horsing around to be able to "hug" the ground properly
467 // and still be able to take off.
468 // Set the near clip plane to 1.0 meters when less than 10 meters above the
470 // Did some serious horsing around getting the initial airplane position to be
471 // correct based on rendered terrain elevation.
472 // Added a little cheat/hack that will prevent the view position from ever
473 // dropping below the terrain, even when the flight model doesn't quite
474 // put you as high as you'd like.
476 // Revision 1.22 1998/07/04 00:52:25 curt
477 // Add my own version of gluLookAt() (which is nearly identical to the
478 // Mesa/glu version.) But, by calculating the Model View matrix our selves
479 // we can save this matrix without having to read it back in from the video
480 // card. This hopefully allows us to save a few cpu cycles when rendering
481 // out the fragments because we can just use glLoadMatrixd() with the
482 // precalculated matrix for each tile rather than doing a push(), translate(),
483 // pop() for every fragment.
485 // Panel status defaults to off for now until it gets a bit more developed.
487 // Extract OpenGL driver info on initialization.
489 // Revision 1.21 1998/06/27 16:54:33 curt
490 // Replaced "extern displayInstruments" with a entry in fgOPTIONS.
491 // Don't change the view port when displaying the panel.
493 // Revision 1.20 1998/06/17 21:35:12 curt
494 // Refined conditional audio support compilation.
495 // Moved texture parameter setup calls to ../Scenery/materials.cxx
496 // #include <string.h> before various STL includes.
497 // Make HUD default state be enabled.
499 // Revision 1.19 1998/06/08 17:57:05 curt
500 // Minor sound/startup position tweaks.
502 // Revision 1.18 1998/06/03 00:47:14 curt
503 // Updated to compile in audio support if OSS available.
504 // Updated for new version of Steve's audio library.
505 // STL includes don't use .h
506 // Small view optimizations.
508 // Revision 1.17 1998/06/01 17:54:42 curt
509 // Added Linux audio support.
510 // avoid glClear( COLOR_BUFFER_BIT ) when not using it to set the sky color.
513 // Revision 1.16 1998/05/29 20:37:24 curt
514 // Tweaked material properties & lighting a bit in GLUTmain.cxx.
515 // Read airport list into a "map" STL for dynamic list sizing and fast tree
518 // Revision 1.15 1998/05/22 21:28:53 curt
519 // Modifications to use the new fgEVENT_MGR class.
521 // Revision 1.14 1998/05/20 20:51:35 curt
522 // Tweaked smooth shaded texture lighting properties.
523 // Converted fgLIGHT to a C++ class.
525 // Revision 1.13 1998/05/16 13:08:35 curt
526 // C++ - ified views.[ch]xx
527 // Shuffled some additional view parameters into the fgVIEW class.
528 // Changed tile-radius to tile-diameter because it is a much better
530 // Added a WORLD_TO_EYE transformation to views.cxx. This allows us
531 // to transform world space to eye space for view frustum culling.
533 // Revision 1.12 1998/05/13 18:29:58 curt
534 // Added a keyboard binding to dynamically adjust field of view.
535 // Added a command line option to specify fov.
536 // Adjusted terrain color.
537 // Root path info moved to fgOPTIONS.
538 // Added ability to parse options out of a config file.
540 // Revision 1.11 1998/05/07 23:14:15 curt
541 // Added "D" key binding to set autopilot heading.
542 // Made frame rate calculation average out over last 10 frames.
543 // Borland C++ floating point exception workaround.
544 // Added a --tile-radius=n option.
546 // Revision 1.10 1998/05/06 03:16:24 curt
547 // Added an averaged global frame rate counter.
548 // Added an option to control tile radius.
550 // Revision 1.9 1998/05/03 00:47:31 curt
551 // Added an option to enable/disable full-screen mode.
553 // Revision 1.8 1998/04/30 12:34:18 curt
554 // Added command line rendering options:
555 // enable/disable fog/haze
556 // specify smooth/flat shading
557 // disable sky blending and just use a solid color
558 // enable wireframe drawing mode
560 // Revision 1.7 1998/04/28 01:20:22 curt
561 // Type-ified fgTIME and fgVIEW.
562 // Added a command line option to disable textures.
564 // Revision 1.6 1998/04/26 05:10:03 curt
565 // "struct fgLIGHT" -> "fgLIGHT" because fgLIGHT is typedef'd.
567 // Revision 1.5 1998/04/25 22:06:30 curt
568 // Edited cvs log messages in source files ... bad bad bad!
570 // Revision 1.4 1998/04/25 20:24:01 curt
571 // Cleaned up initialization sequence to eliminate interdependencies
572 // between sun position, lighting, and view position. This creates a
573 // valid single pass initialization path.
575 // Revision 1.3 1998/04/25 15:11:11 curt
576 // Added an command line option to set starting position based on airport ID.
578 // Revision 1.2 1998/04/24 00:49:20 curt
579 // Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
580 // Trying out some different option parsing code.
581 // Some code reorganization.
583 // Revision 1.1 1998/04/22 13:25:44 curt
584 // C++ - ifing the code.
585 // Starting a bit of reorganization of lighting code.
587 // Revision 1.56 1998/04/18 04:11:28 curt
588 // Moved fg_debug to it's own library, added zlib support.
590 // Revision 1.55 1998/04/14 02:21:03 curt
591 // Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
592 // <jgoeke@voyager.net>
594 // Revision 1.54 1998/04/08 23:35:36 curt
595 // Tweaks to Gnu automake/autoconf system.
597 // Revision 1.53 1998/04/03 22:09:06 curt
598 // Converting to Gnu autoconf system.
600 // Revision 1.52 1998/03/23 21:24:38 curt
601 // Source code formating tweaks.
603 // Revision 1.51 1998/03/14 00:31:22 curt
604 // Beginning initial terrain texturing experiments.
606 // Revision 1.50 1998/03/09 22:46:19 curt
609 // Revision 1.49 1998/02/23 19:07:59 curt
610 // Incorporated Durk's Astro/ tweaks. Includes unifying the sun position
611 // calculation code between sun display, and other FG sections that use this
612 // for things like lighting.
614 // Revision 1.48 1998/02/21 14:53:15 curt
615 // Added Charlie's HUD changes.
617 // Revision 1.47 1998/02/19 13:05:53 curt
618 // Incorporated some HUD tweaks from Michelle America.
619 // Tweaked the sky's sunset/rise colors.
620 // Other misc. tweaks.
622 // Revision 1.46 1998/02/18 15:07:06 curt
623 // Tweaks to build with SGI OpenGL (and therefor hopefully other accelerated
624 // drivers will work.)
626 // Revision 1.45 1998/02/16 13:39:43 curt
627 // Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
628 // tiles to occasionally be missing.
630 // Revision 1.44 1998/02/12 21:59:50 curt
631 // Incorporated code changes contributed by Charlie Hotchkiss
632 // <chotchkiss@namg.us.anritsu.com>
634 // Revision 1.43 1998/02/11 02:50:40 curt
637 // Revision 1.42 1998/02/09 22:56:58 curt
638 // Removed "depend" files from cvs control. Other minor make tweaks.
640 // Revision 1.41 1998/02/09 15:07:50 curt
643 // Revision 1.40 1998/02/07 15:29:44 curt
644 // Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
645 // <chotchkiss@namg.us.anritsu.com>
647 // Revision 1.39 1998/02/03 23:20:25 curt
648 // Lots of little tweaks to fix various consistency problems discovered by
649 // Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
650 // passed arguments along to the real printf(). Also incorporated HUD changes
651 // by Michele America.
653 // Revision 1.38 1998/02/02 20:53:58 curt
654 // Incorporated Durk's changes.
656 // Revision 1.37 1998/02/01 03:39:54 curt
659 // Revision 1.36 1998/01/31 00:43:13 curt
660 // Added MetroWorks patches from Carmen Volpe.
662 // Revision 1.35 1998/01/27 00:47:57 curt
663 // Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
664 // system and commandline/config file processing code.
666 // Revision 1.34 1998/01/22 02:59:37 curt
667 // Changed #ifdef FILE_H to #ifdef _FILE_H
669 // Revision 1.33 1998/01/21 21:11:34 curt
672 // Revision 1.32 1998/01/19 19:27:08 curt
673 // Merged in make system changes from Bob Kuehne <rpk@sgi.com>
674 // This should simplify things tremendously.
676 // Revision 1.31 1998/01/19 18:40:32 curt
677 // Tons of little changes to clean up the code and to remove fatal errors
678 // when building with the c++ compiler.
680 // Revision 1.30 1998/01/13 00:23:09 curt
681 // Initial changes to support loading and management of scenery tiles. Note,
682 // there's still a fair amount of work left to be done.
684 // Revision 1.29 1998/01/08 02:22:08 curt
685 // Beginning to integrate Tile management subsystem.
687 // Revision 1.28 1998/01/07 03:18:58 curt
688 // Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
690 // Revision 1.27 1998/01/05 18:44:35 curt
691 // Add an option to advance/decrease time from keyboard.
693 // Revision 1.26 1997/12/30 23:09:04 curt
694 // Tweaking initialization sequences.
696 // Revision 1.25 1997/12/30 22:22:33 curt
697 // Further integration of event manager.
699 // Revision 1.24 1997/12/30 20:47:44 curt
700 // Integrated new event manager with subsystem initializations.
702 // Revision 1.23 1997/12/30 16:36:50 curt
703 // Merged in Durk's changes ...
705 // Revision 1.22 1997/12/19 23:34:05 curt
706 // Lot's of tweaking with sky rendering and lighting.
708 // Revision 1.21 1997/12/19 16:45:00 curt
709 // Working on scene rendering order and options.
711 // Revision 1.20 1997/12/18 23:32:33 curt
712 // First stab at sky dome actually starting to look reasonable. :-)
714 // Revision 1.19 1997/12/17 23:13:36 curt
715 // Began working on rendering a sky.
717 // Revision 1.18 1997/12/15 23:54:49 curt
718 // Add xgl wrappers for debugging.
719 // Generate terrain normals on the fly.
721 // Revision 1.17 1997/12/15 20:59:09 curt
724 // Revision 1.16 1997/12/12 19:52:48 curt
725 // Working on lightling and material properties.
727 // Revision 1.15 1997/12/11 04:43:55 curt
728 // Fixed sun vector and lighting problems. I thing the moon is now lit
731 // Revision 1.14 1997/12/10 22:37:47 curt
732 // Prepended "fg" on the name of all global structures that didn't have it yet.
733 // i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
735 // Revision 1.13 1997/11/25 19:25:32 curt
736 // Changes to integrate Durk's moon/sun code updates + clean up.
738 // Revision 1.12 1997/11/15 18:16:35 curt
741 // Revision 1.11 1997/10/30 12:38:42 curt
742 // Working on new scenery subsystem.
744 // Revision 1.10 1997/10/25 03:24:23 curt
745 // Incorporated sun, moon, and star positioning code contributed by Durk Talsma.
747 // Revision 1.9 1997/09/23 00:29:39 curt
748 // Tweaks to get things to compile with gcc-win32.
750 // Revision 1.8 1997/09/22 14:44:20 curt
751 // Continuing to try to align stars correctly.
753 // Revision 1.7 1997/09/16 15:50:30 curt
754 // Working on star alignment and time issues.
756 // Revision 1.6 1997/09/05 14:17:30 curt
757 // More tweaking with stars.
759 // Revision 1.5 1997/09/04 02:17:36 curt
762 // Revision 1.4 1997/08/27 21:32:26 curt
763 // Restructured view calculation code. Added stars.
765 // Revision 1.3 1997/08/27 03:30:19 curt
766 // Changed naming scheme of basic shared structures.
768 // Revision 1.2 1997/08/25 20:27:23 curt
769 // Merged in initial HUD and Joystick code.
771 // Revision 1.1 1997/08/23 01:46:20 curt