1 // GLUTmain.cxx -- top level sim routines
3 // Written by Curtis Olson for OpenGL, started May 1997.
5 // Copyright (C) 1997 Curtis L. Olson - curt@me.umn.edu
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 // (Log is kept at end of this file)
24 #define MICHAEL_JOHNSON_EXPERIMENTAL_ENGINE_AUDIO
45 #include <sys/stat.h> /* for stat() */
48 # include <unistd.h> /* for stat() */
51 #include <Include/fg_constants.h> // for VERSION
52 #include <Include/general.h>
54 #include <Aircraft/aircraft.hxx>
55 #include <Astro/sky.hxx>
56 #include <Astro/stars.hxx>
57 #include <Astro/solarsystem.hxx>
59 #ifdef ENABLE_AUDIO_SUPPORT
60 # include <Audio/src/sl.h>
61 # include <Audio/src/sm.h>
64 #include <Autopilot/autopilot.hxx>
65 #include <Cockpit/cockpit.hxx>
66 #include <Debug/logstream.hxx>
68 #include <Joystick/joystick.hxx>
69 #include <Math/fg_geodesy.hxx>
70 #include <Math/mat3.h>
71 #include <Math/polar3d.hxx>
73 #include <Scenery/scenery.hxx>
74 #include <Scenery/tilemgr.hxx>
75 #include <Time/event.hxx>
76 #include <Time/fg_time.hxx>
77 #include <Time/fg_timer.hxx>
78 #include <Time/sunpos.hxx>
79 #include <Weather/weather.hxx>
81 #include "GLUTkey.hxx"
82 #include "fg_init.hxx"
83 #include "options.hxx"
88 // This is a record containing global housekeeping information
91 // Specify our current idle function state. This is used to run all
92 // our initializations out of the glutIdleLoop() so that we can get a
93 // splash screen up and running right away.
94 static int idle_state = 0;
99 // Yet another hack, this time for the panel
102 // Global structures for the Audio library
103 #ifdef ENABLE_AUDIO_SUPPORT
104 slEnvelope pitch_envelope ( 1, SL_SAMPLE_ONE_SHOT ) ;
105 slEnvelope volume_envelope ( 1, SL_SAMPLE_ONE_SHOT ) ;
106 slScheduler *audio_sched;
107 smMixer *audio_mixer;
113 // The following defines flight gear options. Because glutlib will also
114 // want to parse its own options, those options must not be included here
115 // or they will get parsed by the main program option parser. Hence case
116 // is significant for any option added that might be in conflict with
119 // glutlib parses for:
121 // -direct (invalid in Win32)
125 // -indirect (invalid in Win32)
128 // Note that glutlib depends upon strings while this program's
129 // option parser wants only initial characters followed by numbers
134 // fgInitVisuals() -- Initialize various GL/view parameters
135 static void fgInitVisuals( void ) {
139 l = &cur_light_params;
140 w = ¤t_weather;
142 // Go full screen if requested ...
143 if ( current_options.get_fullscreen() ) {
147 // If enabled, normal vectors specified with glNormal are scaled
148 // to unit length after transformation. See glNormal.
149 // xglEnable( GL_NORMALIZE );
151 xglEnable( GL_LIGHTING );
152 xglEnable( GL_LIGHT0 );
153 xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );
155 // xglFogi (GL_FOG_MODE, GL_LINEAR);
156 xglFogi (GL_FOG_MODE, GL_EXP2);
157 // Fog density is now set when the weather system is initialized
158 // xglFogf (GL_FOG_DENSITY, w->fog_density);
159 if ( (current_options.get_fog() == 1) ||
160 (current_options.get_shading() == 0) ) {
161 // if fastest fog requested, or if flat shading force fastest
162 xglHint ( GL_FOG_HINT, GL_FASTEST );
163 } else if ( current_options.get_fog() == 2 ) {
164 xglHint ( GL_FOG_HINT, GL_NICEST );
166 if ( current_options.get_wireframe() ) {
168 xglPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
171 // This is the default anyways, but it can't hurt
172 xglFrontFace ( GL_CCW );
175 // xglEnable(GL_POINT_SMOOTH);
176 // xglEnable(GL_LINE_SMOOTH);
177 // xglEnable(GL_POLYGON_SMOOTH);
182 // Draw a basic instrument panel
183 static void fgUpdateInstrViewParams( void ) {
191 xglViewport(0, 0 , (GLint)(v->winWidth), (GLint)(v->winHeight) / 2);
193 xglMatrixMode(GL_PROJECTION);
197 gluOrtho2D(0, 640, 0, 480);
198 xglMatrixMode(GL_MODELVIEW);
202 xglColor3f(1.0, 1.0, 1.0);
205 xglDisable(GL_DEPTH_TEST);
206 xglDisable(GL_LIGHTING);
209 xglColor3f (0.5, 0.5, 0.5);
212 xglVertex2f(0.0, 0.00);
213 xglVertex2f(0.0, 480.0);
214 xglVertex2f(640.0,480.0);
215 xglVertex2f(640.0, 0.0);
218 xglRectf(0.0,0.0, 640, 480);
219 xglEnable(GL_DEPTH_TEST);
220 xglEnable(GL_LIGHTING);
221 xglMatrixMode(GL_PROJECTION);
223 xglMatrixMode(GL_MODELVIEW);
229 // Update all Visuals (redraws anything graphics related)
230 static void fgRenderFrame( void ) {
236 static int iteration = 0;
237 // GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
238 GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
239 GLfloat terrain_color[4] = { 0.54, 0.44, 0.29, 1.0 };
240 GLbitfield clear_mask;
242 f = current_aircraft.flight;
243 l = &cur_light_params;
244 t = &cur_time_params;
247 if ( idle_state != 1000 ) {
248 // still initializing, draw the splash screen
249 if ( current_options.get_splash_screen() == 1 ) {
253 // idle_state is now 1000 meaning we've finished all our
254 // initializations and are running the main loop, so this will
255 // now work without seg faulting the system.
257 // printf("Ground = %.2f Altitude = %.2f\n", scenery.cur_elev,
258 // FG_Altitude * FEET_TO_METER);
260 // this is just a temporary hack, to make me understand Pui
261 // timerText -> setLabel (ctime (&t->cur_time));
264 // update view volume parameters
265 v->UpdateViewParams();
267 clear_mask = GL_DEPTH_BUFFER_BIT;
268 if ( current_options.get_wireframe() ) {
269 clear_mask |= GL_COLOR_BUFFER_BIT;
271 if ( current_options.get_panel_status() ) {
272 // we can't clear the screen when the panel is active
273 } else if ( current_options.get_skyblend() ) {
274 if ( current_options.get_textures() ) {
275 // glClearColor(black[0], black[1], black[2], black[3]);
276 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
277 l->adj_fog_color[2], l->adj_fog_color[3]);
278 clear_mask |= GL_COLOR_BUFFER_BIT;
281 glClearColor(l->sky_color[0], l->sky_color[1],
282 l->sky_color[2], l->sky_color[3]);
283 clear_mask |= GL_COLOR_BUFFER_BIT;
285 xglClear( clear_mask );
287 // Tell GL we are switching to model view parameters
288 xglMatrixMode(GL_MODELVIEW);
289 // xglLoadIdentity();
292 xglDisable( GL_DEPTH_TEST );
293 xglDisable( GL_LIGHTING );
294 xglDisable( GL_CULL_FACE );
295 xglDisable( GL_FOG );
296 xglShadeModel( GL_SMOOTH );
297 if ( current_options.get_skyblend() ) {
301 // setup transformation for drawing astronomical objects
303 // Translate to view position
304 xglTranslatef( v->view_pos.x(), v->view_pos.y(), v->view_pos.z() );
305 // Rotate based on gst (sidereal time)
306 // note: constant should be 15.041085, Curt thought it was 15
307 angle = t->gst * 15.041085;
308 // printf("Rotating astro objects by %.2f degrees\n",angle);
309 xglRotatef( angle, 0.0, 0.0, -1.0 );
311 // draw stars and planets
313 SolarSystem::theSolarSystem->draw();
318 if ( current_options.get_shading() ) {
319 xglShadeModel( GL_SMOOTH );
321 xglShadeModel( GL_FLAT );
323 xglEnable( GL_DEPTH_TEST );
324 if ( current_options.get_fog() > 0 ) {
326 xglFogfv (GL_FOG_COLOR, l->adj_fog_color);
328 // set lighting parameters
329 xglLightfv(GL_LIGHT0, GL_AMBIENT, l->scene_ambient );
330 xglLightfv(GL_LIGHT0, GL_DIFFUSE, l->scene_diffuse );
332 if ( current_options.get_textures() ) {
333 // texture parameters
334 xglEnable( GL_TEXTURE_2D );
335 xglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
336 xglHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
337 // set base color (I don't think this is doing anything here)
338 xglMaterialfv (GL_FRONT, GL_AMBIENT, white);
339 xglMaterialfv (GL_FRONT, GL_DIFFUSE, white);
341 xglDisable( GL_TEXTURE_2D );
342 xglMaterialfv (GL_FRONT, GL_AMBIENT, terrain_color);
343 xglMaterialfv (GL_FRONT, GL_DIFFUSE, terrain_color);
344 // xglMaterialfv (GL_FRONT, GL_AMBIENT, white);
345 // xglMaterialfv (GL_FRONT, GL_DIFFUSE, white);
350 xglDisable( GL_TEXTURE_2D );
352 if ( (iteration == 0) && (current_options.get_panel_status()) ) {
353 // Did we run this loop before ?? ...and do we need the panel ??
354 fgPanelReInit(0, 0, 1024, 768);
357 // display HUD && Panel
359 iteration = 1; // don't ReInit the panel in the future
361 // We can do translucent menus, so why not. :-)
362 xglEnable ( GL_BLEND ) ;
363 xglBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
365 xglDisable ( GL_BLEND ) ;
372 // Update internal time dependent calculations (i.e. flight model)
373 void fgUpdateTimeDepCalcs(int multi_loop) {
380 f = current_aircraft.flight;
381 l = &cur_light_params;
382 t = &cur_time_params;
385 // update the flight model
386 if ( multi_loop < 0 ) {
387 multi_loop = DEFAULT_MULTILOOP;
391 // run Autopilot system
394 // printf("updating flight model x %d\n", multi_loop);
395 fgFlightModelUpdate( current_options.get_flight_model(),
396 cur_flight_params, multi_loop );
398 fgFlightModelUpdate( current_options.get_flight_model(),
399 cur_flight_params, 0 );
402 // update the view angle
403 for ( i = 0; i < multi_loop; i++ ) {
404 if ( fabs(v->goal_view_offset - v->view_offset) < 0.05 ) {
405 v->view_offset = v->goal_view_offset;
408 // move v->view_offset towards v->goal_view_offset
409 if ( v->goal_view_offset > v->view_offset ) {
410 if ( v->goal_view_offset - v->view_offset < FG_PI ) {
411 v->view_offset += 0.01;
413 v->view_offset -= 0.01;
416 if ( v->view_offset - v->goal_view_offset < FG_PI ) {
417 v->view_offset -= 0.01;
419 v->view_offset += 0.01;
422 if ( v->view_offset > FG_2PI ) {
423 v->view_offset -= FG_2PI;
424 } else if ( v->view_offset < 0 ) {
425 v->view_offset += FG_2PI;
430 double tmp = -(l->sun_rotation + FG_PI) - (f->get_Psi() - v->view_offset);
431 while ( tmp < 0.0 ) {
434 while ( tmp > FG_2PI ) {
437 /* printf("Psi = %.2f, viewoffset = %.2f sunrot = %.2f rottosun = %.2f\n",
438 FG_Psi * RAD_TO_DEG, v->view_offset * RAD_TO_DEG,
439 -(l->sun_rotation+FG_PI) * RAD_TO_DEG, tmp * RAD_TO_DEG); */
444 void fgInitTimeDepCalcs( void ) {
447 #ifdef HAVE_SETITIMER
448 fgTimerInit( 1.0 / DEFAULT_TIMER_HZ, fgUpdateTimeDepCalcs );
449 #endif HAVE_SETITIMER
453 static const double alt_adjust_ft = 3.758099;
454 static const double alt_adjust_m = alt_adjust_ft * FEET_TO_METER;
456 // What should we do when we have nothing else to do? Let's get ready
457 // for the next move and update the display?
458 static void fgMainLoop( void ) {
462 static int remainder = 0;
463 int elapsed, multi_loop;
467 f = current_aircraft.flight;
469 t = &cur_time_params;
471 FG_LOG( FG_ALL, FG_DEBUG, "Running Main Loop");
472 FG_LOG( FG_ALL, FG_DEBUG, "======= ==== ====");
476 // Fix elevation. I'm just sticking this here for now, it should
477 // probably move eventually
479 printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
481 f->get_Runway_altitude() * FEET_TO_METER,
482 f->get_Altitude() * FEET_TO_METER);
484 if ( scenery.cur_elev > -9990 ) {
485 if ( f->get_Altitude() * FEET_TO_METER <
486 (scenery.cur_elev + alt_adjust_m - 3.0) ) {
487 // now set aircraft altitude above ground
488 printf("Current Altitude = %.2f < %.2f forcing to %.2f\n",
489 f->get_Altitude() * FEET_TO_METER,
490 scenery.cur_elev + alt_adjust_m - 3.0,
491 scenery.cur_elev + alt_adjust_m );
492 fgFlightModelSetAltitude( current_options.get_flight_model(),
494 scenery.cur_elev + alt_adjust_m );
496 FG_LOG( FG_ALL, FG_DEBUG,
497 "<*> resetting altitude to "
498 << f->get_Altitude() * FEET_TO_METER << " meters" );
500 f->set_Runway_altitude( scenery.cur_elev * METER_TO_FEET );
503 printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
505 f->get_Runway_altitude() * FEET_TO_METER,
506 f->get_Altitude() * FEET_TO_METER);
511 #if defined( ENABLE_LINUX_JOYSTICK )
512 // Read joystick and update control settings
514 #elif defined( ENABLE_GLUT_JOYSTICK )
515 // Glut joystick support works by feeding a joystick handler
516 // function to glut. This is taken care of once in the joystick
517 // init routine and we don't have to worry about it again.
520 // Get elapsed time for this past frame
521 elapsed = fgGetTimeInterval();
522 FG_LOG( FG_ALL, FG_BULK,
523 "Time interval is = " << elapsed
524 << ", previous remainder is = " << remainder );
526 // Calculate frame rate average
527 if ( elapsed > 0.0 ) {
529 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
530 accum += g->frames[i];
531 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
532 g->frames[i+1] = g->frames[i];
534 g->frames[0] = 1000.0 / (float)elapsed;
535 // printf("frame[0] = %.2f\n", g->frames[0]);
536 accum += g->frames[0];
537 g->frame_rate = accum / (float)FG_FRAME_RATE_HISTORY;
538 // printf("ave = %.2f\n", g->frame_rate);
541 // Calculate model iterations needed for next frame
542 FG_LOG( FG_ALL, FG_DEBUG,
543 "--> Frame rate is = " << g->frame_rate );
544 elapsed += remainder;
546 multi_loop = (int)(((float)elapsed * 0.001) * DEFAULT_MODEL_HZ);
547 remainder = elapsed - ((multi_loop*1000) / DEFAULT_MODEL_HZ);
548 FG_LOG( FG_ALL, FG_BULK,
549 "Model iterations needed = " << multi_loop
550 << ", new remainder = " << remainder );
552 /* printf("right before fm - ground = %.2f runway = %.2f alt = %.2f\n",
554 FG_Runway_altitude * FEET_TO_METER,
555 FG_Altitude * FEET_TO_METER); */
558 if ( ! use_signals ) {
560 fgUpdateTimeDepCalcs(multi_loop);
563 /* printf("After fm - ground = %.2f runway = %.2f alt = %.2f\n",
565 FG_Runway_altitude * FEET_TO_METER,
566 FG_Altitude * FEET_TO_METER); */
568 // Do any serial port work that might need to be done
571 // see if we need to load any new scenery tiles
574 // Process/manage pending events
575 global_events.Process();
577 // Run audio scheduler
578 #ifdef ENABLE_AUDIO_SUPPORT
579 if ( current_options.get_sound() && audio_sched->working() ) {
581 # ifdef MICHAEL_JOHNSON_EXPERIMENTAL_ENGINE_AUDIO
583 // note: all these factors are relative to the sample. our
584 // sample format should really contain a conversion factor so
585 // that we can get prop speed right for arbitrary samples.
586 // Note that for normal-size props, there is a point at which
587 // the prop tips approach the speed of sound; that is a pretty
588 // strong limit to how fast the prop can go.
590 // multiplication factor is prime pitch control; add some log
591 // component for verisimilitude
593 double pitch = log((controls.get_throttle(0) * 14.0) + 1.0);
594 //fprintf(stderr, "pitch1: %f ", pitch);
595 if (controls.get_throttle(0) > 0.0 || f->v_rel_wind > 40.0) {
596 //fprintf(stderr, "rel_wind: %f ", f->v_rel_wind);
597 // only add relative wind and AoA if prop is moving
598 // or we're really flying at idle throttle
599 if (pitch < 5.4) { // this needs tuning
600 // prop tips not breaking sound barrier
601 pitch += log(f->v_rel_wind + 0.8)/2;
603 // prop tips breaking sound barrier
604 pitch += log(f->v_rel_wind + 0.8)/10;
606 //fprintf(stderr, "pitch2: %f ", pitch);
607 //fprintf(stderr, "AoA: %f ", FG_Gamma_vert_rad);
609 // Angle of Attack next... -x^3(e^x) is my best guess Just
610 // need to calculate some reasonable scaling factor and
611 // then clamp it on the positive aoa (neg adj) side
612 double aoa = f->get_Gamma_vert_rad() * 2.2;
614 double aoa_adj = pow(-aoa, tmp) * pow(M_E, aoa);
615 if (aoa_adj < -0.8) aoa_adj = -0.8;
617 //fprintf(stderr, "pitch3: %f ", pitch);
619 // don't run at absurdly slow rates -- not realistic
620 // and sounds bad to boot. :-)
621 if (pitch < 0.8) pitch = 0.8;
623 //fprintf(stderr, "pitch4: %f\n", pitch);
625 double volume = controls.get_throttle(0) * 1.15 + 0.3 +
626 log(f->v_rel_wind + 1.0)/14.0;
627 // fprintf(stderr, "volume: %f\n", volume);
629 pitch_envelope.setStep ( 0, 0.01, pitch );
630 volume_envelope.setStep ( 0, 0.01, volume );
634 double param = controls.get_throttle( 0 ) * 2.0 + 1.0;
635 pitch_envelope.setStep ( 0, 0.01, param );
636 volume_envelope.setStep ( 0, 0.01, param );
638 # endif // experimental throttle patch
640 audio_sched -> update();
647 FG_LOG( FG_ALL, FG_DEBUG, "" );
651 // This is the top level master main function that is registered as
655 // The first few passes take care of initialization things (a couple
656 // per pass) and once everything has been initialized fgMainLoop from
659 static void fgIdleFunction ( void ) {
663 // printf("idle state == %d\n", idle_state);
665 if ( idle_state == 0 ) {
666 // Initialize the splash screen right away
667 if ( current_options.get_splash_screen() ) {
672 } else if ( idle_state == 1 ) {
673 // Start the intro music
675 if ( current_options.get_intro_music() ) {
676 string lockfile = "/tmp/mpg123.running";
677 string mp3file = current_options.get_fg_root() +
679 string command = "(touch " + lockfile + "; mpg123 " + mp3file +
680 "> /dev/null 2>&1; /bin/rm " + lockfile + ") &";
681 FG_LOG( FG_GENERAL, FG_INFO,
682 "Starting intro music: " << mp3file );
683 system ( command.c_str() );
688 } else if ( idle_state == 2 ) {
689 // These are a few miscellaneous things that aren't really
690 // "subsystems" but still need to be initialized.
693 if ( strstr ( g->glRenderer, "Glide" ) ) {
694 grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
699 } else if ( idle_state == 3 ) {
700 // This is the top level init routine which calls all the
701 // other subsystem initialization routines. If you are adding
702 // a subsystem to flight gear, its initialization call should
703 // located in this routine.
704 if( !fgInitSubsystems()) {
705 FG_LOG( FG_GENERAL, FG_ALERT,
706 "Subsystem initializations failed ..." );
711 } else if ( idle_state == 4 ) {
712 // setup OpenGL view parameters
716 // init timer routines, signals, etc. Arrange for an alarm
717 // signal to be generated, etc.
718 fgInitTimeDepCalcs();
722 } else if ( idle_state == 5 ) {
725 } else if ( idle_state == 6 ) {
726 // Initialize audio support
727 #ifdef ENABLE_AUDIO_SUPPORT
730 if ( current_options.get_intro_music() ) {
731 // Let's wait for mpg123 to finish
732 string lockfile = "/tmp/mpg123.running";
733 struct stat stat_buf;
735 FG_LOG( FG_GENERAL, FG_INFO,
736 "Waiting for mpg123 player to finish ..." );
737 while ( stat(lockfile.c_str(), &stat_buf) == 0 ) {
738 // file exist, wait ...
740 FG_LOG( FG_GENERAL, FG_INFO, ".");
742 FG_LOG( FG_GENERAL, FG_INFO, "");
746 audio_sched = new slScheduler ( 8000 );
747 audio_mixer = new smMixer;
748 audio_mixer -> setMasterVolume ( 50 ) ; /* 80% of max volume. */
749 audio_sched -> setSafetyMargin ( 1.0 ) ;
750 string slfile = current_options.get_fg_root() + "/Sounds/wasp.wav";
752 s1 = new slSample ( (char *)slfile.c_str() );
753 FG_LOG( FG_GENERAL, FG_INFO,
754 "Rate = " << s1 -> getRate()
755 << " Bps = " << s1 -> getBps()
756 << " Stereo = " << s1 -> getStereo() );
757 audio_sched -> loopSample ( s1 );
759 if ( audio_sched->working() ) {
760 pitch_envelope.setStep ( 0, 0.01, 0.6 );
761 volume_envelope.setStep ( 0, 0.01, 0.6 );
763 audio_sched -> addSampleEnvelope( s1, 0, 0, &
766 audio_sched -> addSampleEnvelope( s1, 0, 1,
768 SL_VOLUME_ENVELOPE );
771 // strcpy(slfile, path);
772 // strcat(slfile, "thunder.wav");
773 // s2 -> loadFile ( slfile );
774 // s2 -> adjustVolume(0.5);
775 // audio_sched -> playSample ( s2 );
782 if ( idle_state == 1000 ) {
783 // We've finished all our initialization steps, from now on we
784 // run the main loop.
788 if ( current_options.get_splash_screen() == 1 ) {
795 // Handle new window size or exposure
796 static void fgReshape( int width, int height ) {
801 // Do this so we can call fgReshape(0,0) ourselves without having
802 // to know what the values of width & height are.
803 if ( (height > 0) && (width > 0) ) {
804 if ( ! current_options.get_panel_status() ) {
805 v->win_ratio = (GLfloat) width / (GLfloat) height;
807 v->win_ratio = (GLfloat) width / ((GLfloat) (height)*0.4232);
812 v->winHeight = height;
813 v->update_fov = true;
815 // Inform gl of our view window size (now handled elsewhere)
816 // xglViewport(0, 0, (GLint)width, (GLint)height);
817 if ( idle_state == 1000 ) {
818 // yes we've finished all our initializations and are running
819 // the main loop, so this will now work without seg faulting
821 v->UpdateViewParams();
822 if ( current_options.get_panel_status() ) {
823 fgPanelReInit(0, 0, 1024, 768);
827 // xglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
831 // Initialize GLUT and define a main window
832 int fgGlutInit( int *argc, char **argv ) {
833 // GLUT will extract all glut specific options so later on we only
834 // need wory about our own.
835 xglutInit(argc, argv);
837 // Define Display Parameters
838 xglutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
840 FG_LOG( FG_GENERAL, FG_INFO, "Opening a window: " <<
841 current_options.get_xsize() << "x" << current_options.get_ysize() );
843 // Define initial window size
844 xglutInitWindowSize( current_options.get_xsize(),
845 current_options.get_ysize() );
847 // Initialize windows
848 if ( current_options.get_game_mode() == 0 ) {
849 // Open the regular window
850 xglutCreateWindow("Flight Gear");
852 // Open the cool new 'game mode' window
853 string game_mode_params = "width=" + current_options.get_xsize();
854 game_mode_params += "height=" + current_options.get_ysize();
855 game_mode_params += " bpp=16";
856 cout << "game mode params = " << game_mode_params;
857 glutGameModeString( game_mode_params.c_str() );
861 // This seems to be the absolute earliest in the init sequence
862 // that these calls will return valid info. Too bad it's after
863 // we've already created and sized out window. :-(
864 general.glVendor = (char *)glGetString ( GL_VENDOR );
865 general.glRenderer = (char *)glGetString ( GL_RENDERER );
866 general.glVersion = (char *)glGetString ( GL_VERSION );
868 FG_LOG ( FG_GENERAL, FG_INFO, general.glRenderer );
871 // try to determine if we should adjust the initial default
872 // display resolution. The options class defaults (is
873 // initialized) to 640x480.
874 string renderer = general.glRenderer;
876 // currently we only know how to deal with Mesa/Glide/Voodoo cards
877 if ( renderer.find( "Glide" ) != string::npos ) {
878 FG_LOG( FG_GENERAL, FG_INFO, "Detected a Glide driver" );
879 if ( renderer.find( "FB/8" ) != string::npos ) {
880 // probably a voodoo-2
881 if ( renderer.find( "TMU/SLI" ) != string::npos ) {
882 // probably two SLI'd Voodoo-2's
883 current_options.set_xsize( 1024 );
884 current_options.set_ysize( 768 );
885 FG_LOG( FG_GENERAL, FG_INFO,
886 "It looks like you have two sli'd voodoo-2's." << endl
887 << "upgrading your win resolution to 1024 x 768" );
888 glutReshapeWindow(1024, 768);
890 // probably a single non-SLI'd Voodoo-2
891 current_options.set_xsize( 800 );
892 current_options.set_ysize( 600 );
893 FG_LOG( FG_GENERAL, FG_INFO,
894 "It looks like you have a voodoo-2." << endl
895 << "upgrading your win resolution to 800 x 600" );
896 glutReshapeWindow(800, 600);
898 } else if ( renderer.find( "FB/2" ) != string::npos ) {
899 // probably a voodoo-1, stick with the default
902 // we have no special knowledge of this card, stick with the default
910 // Initialize GLUT event handlers
911 int fgGlutInitEvents( void ) {
912 // call fgReshape() on window resizes
913 xglutReshapeFunc( fgReshape );
915 // call GLUTkey() on keyboard event
916 xglutKeyboardFunc( GLUTkey );
917 glutSpecialFunc( GLUTspecialkey );
919 // call guiMouseFunc() whenever our little rodent is used
920 glutMouseFunc ( guiMouseFunc );
921 glutMotionFunc (guiMotionFunc );
922 glutPassiveMotionFunc (guiMotionFunc );
924 // call fgMainLoop() whenever there is
925 // nothing else to do
926 xglutIdleFunc( fgIdleFunction );
929 xglutDisplayFunc( fgRenderFrame );
936 int main( int argc, char **argv ) {
939 f = current_aircraft.flight;
942 _control87(MCW_EM, MCW_EM); /* defined in float.h */
945 // Initialize the [old] debugging output system
948 // set default log levels
949 fglog().setLogLevels( FG_ALL, FG_DEBUG );
951 FG_LOG( FG_GENERAL, FG_INFO, "Flight Gear: Version " << VERSION << endl );
955 FG_LOG( FG_GENERAL, FG_INFO, "General Initialization" );
956 FG_LOG( FG_GENERAL, FG_INFO, "======= ==============" );
958 // Attempt to locate and parse a config file
959 // First check fg_root
960 string config = current_options.get_fg_root() + "/system.fgfsrc";
961 current_options.parse_config_file( config );
963 // Next check home directory
964 char* envp = ::getenv( "HOME" );
965 if ( envp != NULL ) {
967 config += "/.fgfsrc";
968 current_options.parse_config_file( config );
971 // Parse remaining command line options
972 // These will override anything specified in a config file
973 if ( current_options.parse_command_line(argc, argv) !=
974 fgOPTIONS::FG_OPTIONS_OK )
976 // Something must have gone horribly wrong with the command
977 // line parsing or maybe the user just requested help ... :-)
978 current_options.usage();
979 // FG_LOG( FG_GENERAL, FG_ALERT, "\nExiting ...");
980 cout << endl << "Exiting ..." << endl;
984 // Initialize the Window/Graphics environment.
985 if( !fgGlutInit(&argc, argv) ) {
986 FG_LOG( FG_GENERAL, FG_ALERT, "GLUT initialization failed ..." );
990 // Initialize the various GLUT Event Handlers.
991 if( !fgGlutInitEvents() ) {
992 FG_LOG( FG_GENERAL, FG_ALERT,
993 "GLUT event handler initialization failed ..." );
997 // First do some quick general initializations
998 if( !fgInitGeneral()) {
999 FG_LOG( FG_GENERAL, FG_ALERT,
1000 "General initializations failed ..." );
1004 // Init the user interface (we need to do this before passing off
1008 // pass control off to the master GLUT event handler
1011 // we never actually get here ... but just in case ... :-)
1017 // Revision 1.71 1998/12/05 14:19:51 curt
1018 // Looking into a problem with cur_view_params.abs_view_pos initialization.
1020 // Revision 1.70 1998/12/03 01:17:14 curt
1021 // Converted fgFLIGHT to a class.
1023 // Revision 1.69 1998/11/23 20:51:26 curt
1024 // Fiddling with when I can get info from the opengl driver.
1026 // Revision 1.68 1998/11/20 01:02:35 curt
1027 // Try to detect Mesa/Glide/Voodoo and chose the appropriate resolution.
1029 // Revision 1.67 1998/11/16 13:59:58 curt
1030 // Added pow() macro bug work around.
1031 // Added support for starting FGFS at various resolutions.
1032 // Added some initial serial port support.
1033 // Specify default log levels in main().
1035 // Revision 1.66 1998/11/11 00:24:00 curt
1036 // Added Michael Johnson's audio patches for testing.
1037 // Also did a few tweaks to avoid numerical problems when starting at a place
1038 // with no (or bogus) scenery.
1040 // Revision 1.65 1998/11/09 23:39:22 curt
1041 // Tweaks for the instrument panel.
1043 // Revision 1.64 1998/11/07 19:07:09 curt
1044 // Enable release builds using the --without-logging option to the configure
1045 // script. Also a couple log message cleanups, plus some C to C++ comment
1048 // Revision 1.63 1998/11/06 21:18:08 curt
1049 // Converted to new logstream debugging facility. This allows release
1050 // builds with no messages at all (and no performance impact) by using
1051 // the -DFG_NDEBUG flag.
1053 // Revision 1.62 1998/10/27 02:14:35 curt
1054 // Changes to support GLUT joystick routines as fall back.
1056 // Revision 1.61 1998/10/25 14:08:47 curt
1057 // Turned "struct fgCONTROLS" into a class, with inlined accessor functions.
1059 // Revision 1.60 1998/10/25 10:57:18 curt
1060 // Changes to use the new joystick library if it is available.
1062 // Revision 1.59 1998/10/17 01:34:21 curt
1065 // Revision 1.58 1998/10/16 23:27:52 curt
1068 // Revision 1.57 1998/10/16 00:54:00 curt
1069 // Converted to Point3D class.
1071 // Revision 1.56 1998/10/02 12:46:47 curt
1072 // Added an "auto throttle"
1074 // Revision 1.55 1998/09/29 14:58:18 curt
1075 // Use working() instead of !not_working() for audio.
1077 // Revision 1.54 1998/09/29 02:03:38 curt
1080 // Revision 1.53 1998/09/26 13:18:35 curt
1081 // Check if audio "working()" before doing audio manipulations.
1083 // Revision 1.52 1998/09/25 16:02:07 curt
1084 // Added support for pitch and volume envelopes and tied them to the
1085 // throttle setting.
1087 // Revision 1.51 1998/09/15 04:27:28 curt
1088 // Changes for new Astro code.
1090 // Revision 1.50 1998/09/15 02:09:24 curt
1091 // Include/fg_callback.hxx
1092 // Moved code inline to stop g++ 2.7 from complaining.
1094 // Simulator/Time/event.[ch]xx
1095 // Changed return type of fgEVENT::printStat(). void caused g++ 2.7 to
1096 // complain bitterly.
1098 // Minor bugfix and changes.
1100 // Simulator/Main/GLUTmain.cxx
1101 // Added missing type to idle_state definition - eliminates a warning.
1103 // Simulator/Main/fg_init.cxx
1104 // Changes to airport lookup.
1106 // Simulator/Main/options.cxx
1107 // Uses fg_gzifstream when loading config file.
1109 // Revision 1.49 1998/09/09 16:25:39 curt
1110 // Only use GLUT_STENCIL if the instument panel has been requested.
1112 // Revision 1.48 1998/08/28 18:15:03 curt
1113 // Added new cockpit code from Friedemann Reinhard
1114 // <mpt218@faupt212.physik.uni-erlangen.de>
1116 // Revision 1.47 1998/08/27 17:02:04 curt
1117 // Contributions from Bernie Bright <bbright@c031.aone.net.au>
1118 // - use strings for fg_root and airport_id and added methods to return
1120 // - inlined all access methods,
1121 // - made the parsing functions private methods,
1122 // - deleted some unused functions.
1123 // - propogated some of these changes out a bit further.
1125 // Revision 1.46 1998/08/22 14:49:56 curt
1126 // Attempting to iron out seg faults and crashes.
1127 // Did some shuffling to fix a initialization order problem between view
1128 // position, scenery elevation.
1130 // Revision 1.45 1998/08/20 20:32:31 curt
1131 // Reshuffled some of the code in and around views.[ch]xx
1133 // Revision 1.44 1998/08/20 15:10:33 curt
1134 // Added GameGLUT support.
1136 // Revision 1.43 1998/08/12 21:01:47 curt
1137 // Master volume from 30% -> 80%
1139 // Revision 1.42 1998/07/30 23:48:25 curt
1140 // Output position & orientation when pausing.
1141 // Eliminated libtool use.
1142 // Added options to specify initial position and orientation.
1143 // Changed default fov to 55 degrees.
1144 // Added command line option to start in paused or unpaused state.
1146 // Revision 1.41 1998/07/27 18:41:24 curt
1147 // Added a pause command "p"
1148 // Fixed some initialization order problems between pui and glut.
1149 // Added an --enable/disable-sound option.
1151 // Revision 1.40 1998/07/24 21:56:59 curt
1152 // Set near clip plane to 0.5 meters when close to the ground. Also, let the view get a bit closer to the ground before hitting the hard limit.
1154 // Revision 1.39 1998/07/24 21:39:08 curt
1155 // Debugging output tweaks.
1156 // Cast glGetString to (char *) to avoid compiler errors.
1157 // Optimizations to fgGluLookAt() by Norman Vine.
1159 // Revision 1.38 1998/07/22 21:40:43 curt
1160 // Clear to adjusted fog color (for sunrise/sunset effects)
1161 // Make call to fog sunrise/sunset adjustment method.
1162 // Add a stdc++ library bug work around to fg_init.cxx
1164 // Revision 1.37 1998/07/20 12:49:44 curt
1165 // Tweaked color buffer clearing defaults. We clear the color buffer if we
1166 // are doing textures. Assumptions: If we are doing textures we have hardware
1167 // support that can clear the color buffer for "free." If we are doing software
1168 // rendering with textures, then the extra clear time gets lost in the noise.
1170 // Revision 1.36 1998/07/16 17:33:35 curt
1171 // "H" / "h" now control hud brightness as well with off being one of the
1173 // Better checking for xmesa/fx 3dfx fullscreen/window support for deciding
1174 // whether or not to build in the feature.
1175 // Translucent menu support.
1176 // HAVE_AUDIO_SUPPORT -> ENABLE_AUDIO_SUPPORT
1177 // Use fork() / wait() for playing mp3 init music in background under unix.
1178 // Changed default tile diameter to 5.
1180 // Revision 1.35 1998/07/13 21:01:36 curt
1181 // Wrote access functions for current fgOPTIONS.
1183 // Revision 1.34 1998/07/13 15:32:37 curt
1184 // Clear color buffer if drawing wireframe.
1185 // When specifying and airport, start elevation at -1000 and let the system
1186 // position you at ground level.
1188 // Revision 1.33 1998/07/12 03:14:42 curt
1189 // Added ground collision detection.
1190 // Did some serious horsing around to be able to "hug" the ground properly
1191 // and still be able to take off.
1192 // Set the near clip plane to 1.0 meters when less than 10 meters above the
1194 // Did some serious horsing around getting the initial airplane position to be
1195 // correct based on rendered terrain elevation.
1196 // Added a little cheat/hack that will prevent the view position from ever
1197 // dropping below the terrain, even when the flight model doesn't quite
1198 // put you as high as you'd like.
1200 // Revision 1.32 1998/07/08 14:45:07 curt
1201 // polar3d.h renamed to polar3d.hxx
1202 // vector.h renamed to vector.hxx
1203 // updated audio support so it waits to create audio classes (and tie up
1204 // /dev/dsp) until the mpg123 player is finished.
1206 // Revision 1.31 1998/07/06 21:34:17 curt
1207 // Added an enable/disable splash screen option.
1208 // Added an enable/disable intro music option.
1209 // Added an enable/disable instrument panel option.
1210 // Added an enable/disable mouse pointer option.
1211 // Added using namespace std for compilers that support this.
1213 // Revision 1.30 1998/07/06 02:42:03 curt
1214 // Added support for switching between fullscreen and window mode for
1217 // Added a basic splash screen. Restructured the main loop and top level
1218 // initialization routines to do this.
1220 // Hacked in some support for playing a startup mp3 sound file while rest
1221 // of sim initializes. Currently only works in Unix using the mpg123 player.
1222 // Waits for the mpg123 player to finish before initializing internal
1225 // Revision 1.29 1998/07/04 00:52:22 curt
1226 // Add my own version of gluLookAt() (which is nearly identical to the
1227 // Mesa/glu version.) But, by calculating the Model View matrix our selves
1228 // we can save this matrix without having to read it back in from the video
1229 // card. This hopefully allows us to save a few cpu cycles when rendering
1230 // out the fragments because we can just use glLoadMatrixd() with the
1231 // precalculated matrix for each tile rather than doing a push(), translate(),
1232 // pop() for every fragment.
1234 // Panel status defaults to off for now until it gets a bit more developed.
1236 // Extract OpenGL driver info on initialization.
1238 // Revision 1.28 1998/06/27 16:54:32 curt
1239 // Replaced "extern displayInstruments" with a entry in fgOPTIONS.
1240 // Don't change the view port when displaying the panel.
1242 // Revision 1.27 1998/06/17 21:35:10 curt
1243 // Refined conditional audio support compilation.
1244 // Moved texture parameter setup calls to ../Scenery/materials.cxx
1245 // #include <string.h> before various STL includes.
1246 // Make HUD default state be enabled.
1248 // Revision 1.26 1998/06/13 00:40:32 curt
1249 // Tweaked fog command line options.
1251 // Revision 1.25 1998/06/12 14:27:26 curt
1252 // Pui -> PUI, Gui -> GUI.
1254 // Revision 1.24 1998/06/12 00:57:39 curt
1255 // Added support for Pui/Gui.
1256 // Converted fog to GL_FOG_EXP2.
1257 // Link to static simulator parts.
1258 // Update runfg.bat to try to be a little smarter.
1260 // Revision 1.23 1998/06/08 17:57:04 curt
1261 // Minor sound/startup position tweaks.
1263 // Revision 1.22 1998/06/05 18:18:40 curt
1264 // A bit of fiddling with audio ...
1266 // Revision 1.21 1998/06/03 22:01:06 curt
1267 // Tweaking sound library usage.
1269 // Revision 1.20 1998/06/03 00:47:11 curt
1270 // Updated to compile in audio support if OSS available.
1271 // Updated for new version of Steve's audio library.
1272 // STL includes don't use .h
1273 // Small view optimizations.
1275 // Revision 1.19 1998/06/01 17:54:40 curt
1276 // Added Linux audio support.
1277 // avoid glClear( COLOR_BUFFER_BIT ) when not using it to set the sky color.
1280 // Revision 1.18 1998/05/29 20:37:19 curt
1281 // Tweaked material properties & lighting a bit in GLUTmain.cxx.
1282 // Read airport list into a "map" STL for dynamic list sizing and fast tree
1285 // Revision 1.17 1998/05/22 21:28:52 curt
1286 // Modifications to use the new fgEVENT_MGR class.
1288 // Revision 1.16 1998/05/20 20:51:33 curt
1289 // Tweaked smooth shaded texture lighting properties.
1290 // Converted fgLIGHT to a C++ class.
1292 // Revision 1.15 1998/05/16 13:08:34 curt
1293 // C++ - ified views.[ch]xx
1294 // Shuffled some additional view parameters into the fgVIEW class.
1295 // Changed tile-radius to tile-diameter because it is a much better
1297 // Added a WORLD_TO_EYE transformation to views.cxx. This allows us
1298 // to transform world space to eye space for view frustum culling.
1300 // Revision 1.14 1998/05/13 18:29:57 curt
1301 // Added a keyboard binding to dynamically adjust field of view.
1302 // Added a command line option to specify fov.
1303 // Adjusted terrain color.
1304 // Root path info moved to fgOPTIONS.
1305 // Added ability to parse options out of a config file.
1307 // Revision 1.13 1998/05/11 18:18:15 curt
1308 // For flat shading use "glHint (GL_FOG_HINT, GL_FASTEST )"
1310 // Revision 1.12 1998/05/07 23:14:15 curt
1311 // Added "D" key binding to set autopilot heading.
1312 // Made frame rate calculation average out over last 10 frames.
1313 // Borland C++ floating point exception workaround.
1314 // Added a --tile-radius=n option.
1316 // Revision 1.11 1998/05/06 03:16:23 curt
1317 // Added an averaged global frame rate counter.
1318 // Added an option to control tile radius.
1320 // Revision 1.10 1998/05/03 00:47:31 curt
1321 // Added an option to enable/disable full-screen mode.
1323 // Revision 1.9 1998/04/30 12:34:17 curt
1324 // Added command line rendering options:
1325 // enable/disable fog/haze
1326 // specify smooth/flat shading
1327 // disable sky blending and just use a solid color
1328 // enable wireframe drawing mode
1330 // Revision 1.8 1998/04/28 01:20:21 curt
1331 // Type-ified fgTIME and fgVIEW.
1332 // Added a command line option to disable textures.
1334 // Revision 1.7 1998/04/26 05:10:02 curt
1335 // "struct fgLIGHT" -> "fgLIGHT" because fgLIGHT is typedef'd.
1337 // Revision 1.6 1998/04/25 22:06:30 curt
1338 // Edited cvs log messages in source files ... bad bad bad!
1340 // Revision 1.5 1998/04/25 20:24:01 curt
1341 // Cleaned up initialization sequence to eliminate interdependencies
1342 // between sun position, lighting, and view position. This creates a
1343 // valid single pass initialization path.
1345 // Revision 1.4 1998/04/24 14:19:30 curt
1348 // Revision 1.3 1998/04/24 00:49:18 curt
1349 // Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
1350 // Trying out some different option parsing code.
1351 // Some code reorganization.
1353 // Revision 1.2 1998/04/22 13:25:41 curt
1354 // C++ - ifing the code.
1355 // Starting a bit of reorganization of lighting code.
1357 // Revision 1.1 1998/04/21 17:02:39 curt
1358 // Prepairing for C++ integration.
1360 // Revision 1.71 1998/04/18 04:11:26 curt
1361 // Moved fg_debug to it's own library, added zlib support.
1363 // Revision 1.70 1998/04/14 02:21:02 curt
1364 // Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
1365 // <jgoeke@voyager.net>
1367 // Revision 1.69 1998/04/08 23:35:34 curt
1368 // Tweaks to Gnu automake/autoconf system.
1370 // Revision 1.68 1998/04/03 22:09:03 curt
1371 // Converting to Gnu autoconf system.
1373 // Revision 1.67 1998/03/23 21:24:37 curt
1374 // Source code formating tweaks.
1376 // Revision 1.66 1998/03/14 00:31:20 curt
1377 // Beginning initial terrain texturing experiments.
1379 // Revision 1.65 1998/03/09 22:45:57 curt
1380 // Minor tweaks for building on sparc platform.
1382 // Revision 1.64 1998/02/20 00:16:23 curt
1383 // Thursday's tweaks.
1385 // Revision 1.63 1998/02/16 16:17:39 curt
1388 // Revision 1.62 1998/02/16 13:39:42 curt
1389 // Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
1390 // tiles to occasionally be missing.
1392 // Revision 1.61 1998/02/12 21:59:46 curt
1393 // Incorporated code changes contributed by Charlie Hotchkiss
1394 // <chotchkiss@namg.us.anritsu.com>
1396 // Revision 1.60 1998/02/11 02:50:40 curt
1399 // Revision 1.59 1998/02/09 22:56:54 curt
1400 // Removed "depend" files from cvs control. Other minor make tweaks.
1402 // Revision 1.58 1998/02/09 15:07:49 curt
1405 // Revision 1.57 1998/02/07 15:29:40 curt
1406 // Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
1407 // <chotchkiss@namg.us.anritsu.com>
1409 // Revision 1.56 1998/02/03 23:20:23 curt
1410 // Lots of little tweaks to fix various consistency problems discovered by
1411 // Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
1412 // passed arguments along to the real printf(). Also incorporated HUD changes
1413 // by Michele America.
1415 // Revision 1.55 1998/02/02 20:53:58 curt
1416 // Incorporated Durk's changes.
1418 // Revision 1.54 1998/01/31 00:43:10 curt
1419 // Added MetroWorks patches from Carmen Volpe.
1421 // Revision 1.53 1998/01/27 18:35:54 curt
1424 // Revision 1.52 1998/01/27 00:47:56 curt
1425 // Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
1426 // system and commandline/config file processing code.
1428 // Revision 1.51 1998/01/26 15:57:05 curt
1429 // Tweaks for dynamic scenery development.
1431 // Revision 1.50 1998/01/19 19:27:07 curt
1432 // Merged in make system changes from Bob Kuehne <rpk@sgi.com>
1433 // This should simplify things tremendously.
1435 // Revision 1.49 1998/01/19 18:40:31 curt
1436 // Tons of little changes to clean up the code and to remove fatal errors
1437 // when building with the c++ compiler.
1439 // Revision 1.48 1998/01/19 18:35:46 curt
1440 // Minor tweaks and fixes for cygwin32.
1442 // Revision 1.47 1998/01/13 00:23:08 curt
1443 // Initial changes to support loading and management of scenery tiles. Note,
1444 // there's still a fair amount of work left to be done.
1446 // Revision 1.46 1998/01/08 02:22:06 curt
1447 // Beginning to integrate Tile management subsystem.
1449 // Revision 1.45 1998/01/07 03:18:55 curt
1450 // Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
1452 // Revision 1.44 1997/12/30 22:22:31 curt
1453 // Further integration of event manager.
1455 // Revision 1.43 1997/12/30 20:47:43 curt
1456 // Integrated new event manager with subsystem initializations.
1458 // Revision 1.42 1997/12/30 16:36:47 curt
1459 // Merged in Durk's changes ...
1461 // Revision 1.41 1997/12/30 13:06:56 curt
1462 // A couple lighting tweaks ...
1464 // Revision 1.40 1997/12/30 01:38:37 curt
1465 // Switched back to per vertex normals and smooth shading for terrain.
1467 // Revision 1.39 1997/12/22 23:45:45 curt
1468 // First stab at sunset/sunrise sky glow effects.
1470 // Revision 1.38 1997/12/22 04:14:28 curt
1471 // Aligned sky with sun so dusk/dawn effects can be correct relative to the sun.
1473 // Revision 1.37 1997/12/19 23:34:03 curt
1474 // Lot's of tweaking with sky rendering and lighting.
1476 // Revision 1.36 1997/12/19 16:44:57 curt
1477 // Working on scene rendering order and options.
1479 // Revision 1.35 1997/12/18 23:32:32 curt
1480 // First stab at sky dome actually starting to look reasonable. :-)
1482 // Revision 1.34 1997/12/17 23:13:34 curt
1483 // Began working on rendering a sky.
1485 // Revision 1.33 1997/12/15 23:54:45 curt
1486 // Add xgl wrappers for debugging.
1487 // Generate terrain normals on the fly.
1489 // Revision 1.32 1997/12/15 20:59:08 curt
1492 // Revision 1.31 1997/12/12 21:41:25 curt
1493 // More light/material property tweaking ... still a ways off.
1495 // Revision 1.30 1997/12/12 19:52:47 curt
1496 // Working on lightling and material properties.
1498 // Revision 1.29 1997/12/11 04:43:54 curt
1499 // Fixed sun vector and lighting problems. I thing the moon is now lit
1502 // Revision 1.28 1997/12/10 22:37:45 curt
1503 // Prepended "fg" on the name of all global structures that didn't have it yet.
1504 // i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
1506 // Revision 1.27 1997/12/09 05:11:54 curt
1507 // Working on tweaking lighting.
1509 // Revision 1.26 1997/12/09 04:25:29 curt
1510 // Working on adding a global lighting params structure.
1512 // Revision 1.25 1997/12/08 22:54:09 curt
1513 // Enabled GL_CULL_FACE.
1515 // Revision 1.24 1997/11/25 19:25:32 curt
1516 // Changes to integrate Durk's moon/sun code updates + clean up.
1518 // Revision 1.23 1997/11/15 18:16:34 curt
1521 // Revision 1.22 1997/10/30 12:38:41 curt
1522 // Working on new scenery subsystem.
1524 // Revision 1.21 1997/09/23 00:29:38 curt
1525 // Tweaks to get things to compile with gcc-win32.
1527 // Revision 1.20 1997/09/22 14:44:19 curt
1528 // Continuing to try to align stars correctly.
1530 // Revision 1.19 1997/09/18 16:20:08 curt
1531 // At dusk/dawn add/remove stars in stages.
1533 // Revision 1.18 1997/09/16 22:14:51 curt
1534 // Tweaked time of day lighting equations. Don't draw stars during the day.
1536 // Revision 1.17 1997/09/16 15:50:29 curt
1537 // Working on star alignment and time issues.
1539 // Revision 1.16 1997/09/13 02:00:06 curt
1540 // Mostly working on stars and generating sidereal time for accurate star
1543 // Revision 1.15 1997/09/05 14:17:27 curt
1544 // More tweaking with stars.
1546 // Revision 1.14 1997/09/05 01:35:53 curt
1547 // Working on getting stars right.
1549 // Revision 1.13 1997/09/04 02:17:34 curt
1552 // Revision 1.12 1997/08/27 21:32:24 curt
1553 // Restructured view calculation code. Added stars.
1555 // Revision 1.11 1997/08/27 03:30:16 curt
1556 // Changed naming scheme of basic shared structures.
1558 // Revision 1.10 1997/08/25 20:27:22 curt
1559 // Merged in initial HUD and Joystick code.
1561 // Revision 1.9 1997/08/22 21:34:39 curt
1562 // Doing a bit of reorganizing and house cleaning.
1564 // Revision 1.8 1997/08/19 23:55:03 curt
1565 // Worked on better simulating real lighting.
1567 // Revision 1.7 1997/08/16 12:22:38 curt
1568 // Working on improving the lighting/shading.
1570 // Revision 1.6 1997/08/13 20:24:56 curt
1571 // Changes due to changing sunpos interface.
1573 // Revision 1.5 1997/08/06 21:08:32 curt
1574 // Sun position now really* works (I think) ... I still have sun time warping
1575 // code in place, probably should remove it soon.
1577 // Revision 1.4 1997/08/06 15:41:26 curt
1578 // Working on correct sun position.
1580 // Revision 1.3 1997/08/06 00:24:22 curt
1581 // Working on correct real time sun lighting.
1583 // Revision 1.2 1997/08/04 20:25:15 curt
1584 // Organizational tweaking.
1586 // Revision 1.1 1997/08/02 18:45:00 curt
1587 // Renamed GLmain.c GLUTmain.c
1589 // Revision 1.43 1997/08/02 16:23:47 curt
1592 // Revision 1.42 1997/08/01 19:43:33 curt
1593 // Making progress with coordinate system overhaul.
1595 // Revision 1.41 1997/07/31 22:52:37 curt
1596 // Working on redoing internal coordinate systems & scenery transformations.
1598 // Revision 1.40 1997/07/30 16:12:42 curt
1599 // Moved fg_random routines from Util/ to Math/
1601 // Revision 1.39 1997/07/21 14:45:01 curt
1604 // Revision 1.38 1997/07/19 23:04:47 curt
1605 // Added an initial weather section.
1607 // Revision 1.37 1997/07/19 22:34:02 curt
1608 // Moved PI definitions to ../constants.h
1609 // Moved random() stuff to ../Utils/ and renamed fg_random()
1611 // Revision 1.36 1997/07/18 23:41:25 curt
1612 // Tweaks for building with Cygnus Win32 compiler.
1614 // Revision 1.35 1997/07/18 14:28:34 curt
1615 // Hacked in some support for wind/turbulence.
1617 // Revision 1.34 1997/07/16 20:04:48 curt
1618 // Minor tweaks to aid Win32 port.
1620 // Revision 1.33 1997/07/12 03:50:20 curt
1621 // Added an #include <Windows32/Base.h> to help compiling for Win32
1623 // Revision 1.32 1997/07/11 03:23:18 curt
1624 // Solved some scenery display/orientation problems. Still have a positioning
1625 // (or transformation?) problem.
1627 // Revision 1.31 1997/07/11 01:29:58 curt
1628 // More tweaking of terrian floor.
1630 // Revision 1.30 1997/07/10 04:26:37 curt
1631 // We now can interpolated ground elevation for any position in the grid. We
1632 // can use this to enforce a "hard" ground. We still need to enforce some
1633 // bounds checking so that we don't try to lookup data points outside the
1636 // Revision 1.29 1997/07/09 21:31:12 curt
1637 // Working on making the ground "hard."
1639 // Revision 1.28 1997/07/08 18:20:12 curt
1640 // Working on establishing a hard ground.
1642 // Revision 1.27 1997/07/07 20:59:49 curt
1643 // Working on scenery transformations to enable us to fly fluidly over the
1644 // poles with no discontinuity/distortion in scenery.
1646 // Revision 1.26 1997/07/05 20:43:34 curt
1647 // renamed mat3 directory to Math so we could add other math related routines.
1649 // Revision 1.25 1997/06/29 21:19:17 curt
1650 // Working on scenery management system.
1652 // Revision 1.24 1997/06/26 22:14:53 curt
1653 // Beginning work on a scenery management system.
1655 // Revision 1.23 1997/06/26 19:08:33 curt
1656 // Restructuring make, adding automatic "make dep" support.
1658 // Revision 1.22 1997/06/25 15:39:47 curt
1659 // Minor changes to compile with rsxnt/win32.
1661 // Revision 1.21 1997/06/22 21:44:41 curt
1662 // Working on intergrating the VRML (subset) parser.
1664 // Revision 1.20 1997/06/21 17:12:53 curt
1665 // Capitalized subdirectory names.
1667 // Revision 1.19 1997/06/18 04:10:31 curt
1668 // A couple more runway tweaks ...
1670 // Revision 1.18 1997/06/18 02:21:24 curt
1671 // Hacked in a runway
1673 // Revision 1.17 1997/06/17 16:51:58 curt
1674 // Timer interval stuff now uses gettimeofday() instead of ftime()
1676 // Revision 1.16 1997/06/17 04:19:16 curt
1677 // More timer related tweaks with respect to view direction changes.
1679 // Revision 1.15 1997/06/17 03:41:10 curt
1680 // Nonsignal based interval timing is now working.
1681 // This would be a good time to look at cleaning up the code structure a bit.
1683 // Revision 1.14 1997/06/16 19:32:51 curt
1684 // Starting to add general timer support.
1686 // Revision 1.13 1997/06/02 03:40:06 curt
1687 // A tiny bit more view tweaking.
1689 // Revision 1.12 1997/06/02 03:01:38 curt
1690 // Working on views (side, front, back, transitions, etc.)
1692 // Revision 1.11 1997/05/31 19:16:25 curt
1693 // Elevator trim added.
1695 // Revision 1.10 1997/05/31 04:13:52 curt
1696 // WE CAN NOW FLY!!!
1698 // Continuing work on the LaRCsim flight model integration.
1699 // Added some MSFS-like keyboard input handling.
1701 // Revision 1.9 1997/05/30 19:27:01 curt
1702 // The LaRCsim flight model is starting to look like it is working.
1704 // Revision 1.8 1997/05/30 03:54:10 curt
1705 // Made a bit more progress towards integrating the LaRCsim flight model.
1707 // Revision 1.7 1997/05/29 22:39:49 curt
1708 // Working on incorporating the LaRCsim flight model.
1710 // Revision 1.6 1997/05/29 12:31:39 curt
1711 // Minor tweaks, moving towards general flight model integration.
1713 // Revision 1.5 1997/05/29 02:33:23 curt
1714 // Updated to reflect changing interfaces in other "modules."
1716 // Revision 1.4 1997/05/27 17:44:31 curt
1717 // Renamed & rearranged variables and routines. Added some initial simple
1718 // timer/alarm routines so the flight model can be updated on a regular
1721 // Revision 1.3 1997/05/23 15:40:25 curt
1722 // Added GNU copyright headers.
1725 // Revision 1.2 1997/05/23 00:35:12 curt
1726 // Trying to get fog to work ...
1728 // Revision 1.1 1997/05/21 15:57:51 curt
1729 // Renamed due to added GLUT support.
1731 // Revision 1.3 1997/05/19 18:22:42 curt
1732 // Parameter tweaking ... starting to stub in fog support.
1734 // Revision 1.2 1997/05/17 00:17:34 curt
1735 // Trying to stub in support for standard OpenGL.
1737 // Revision 1.1 1997/05/16 16:05:52 curt
1738 // Initial revision.