3 // GLUTmain.cxx -- top level sim routines
5 // Written by Curtis Olson for OpenGL, started May 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.
24 // (Log is kept at end of this file)
46 #include <sys/stat.h> /* for stat() */
49 # include <unistd.h> /* for stat() */
52 #include <Include/fg_constants.h> // for VERSION
53 #include <Include/general.h>
55 #include <Aircraft/aircraft.h>
56 #include <Astro/moon.hxx>
57 #include <Astro/planets.hxx>
58 #include <Astro/sky.hxx>
59 #include <Astro/stars.hxx>
60 #include <Astro/sun.hxx>
62 #ifdef ENABLE_AUDIO_SUPPORT
63 # include <Audio/src/sl.h>
64 # include <Audio/src/sm.h>
67 #include <Cockpit/cockpit.hxx>
68 #include <Debug/fg_debug.h>
70 #include <Joystick/joystick.h>
71 #include <Math/fg_geodesy.h>
72 #include <Math/mat3.h>
73 #include <Math/polar3d.hxx>
75 #include <Scenery/scenery.hxx>
76 #include <Scenery/tilemgr.hxx>
77 #include <Time/event.hxx>
78 #include <Time/fg_time.hxx>
79 #include <Time/fg_timer.hxx>
80 #include <Time/sunpos.hxx>
81 #include <Weather/weather.h>
83 #include "GLUTkey.hxx"
84 #include "fg_init.hxx"
85 #include "options.hxx"
90 // This is a record containing global housekeeping information
93 // Specify our current idle function state. This is used to run all
94 // our initializations out of the glutIdleLoop() so that we can get a
95 // splash screen up and running right away.
96 static idle_state = 0;
101 // Yet another hack, this time for the panel
104 // Global structures for the Audio library
105 #ifdef ENABLE_AUDIO_SUPPORT
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);
181 #ifdef IS_THIS_BETTER_THAN_A_ZERO_CHARLIE
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
319 xglEnable( GL_LIGHTING );
320 xglEnable( GL_LIGHT0 );
321 // set lighting parameters
322 xglLightfv(GL_LIGHT0, GL_AMBIENT, white );
323 xglLightfv(GL_LIGHT0, GL_DIFFUSE, white );
324 xglEnable( GL_CULL_FACE );
326 // Let's try some blending technique's (Durk)
328 glBlendFunc(GL_ONE, GL_ONE);
335 if ( current_options.get_shading() ) {
336 xglShadeModel( GL_SMOOTH );
338 xglShadeModel( GL_FLAT );
340 xglEnable( GL_DEPTH_TEST );
341 if ( current_options.get_fog() > 0 ) {
343 xglFogfv (GL_FOG_COLOR, l->adj_fog_color);
345 // set lighting parameters
346 xglLightfv(GL_LIGHT0, GL_AMBIENT, l->scene_ambient );
347 xglLightfv(GL_LIGHT0, GL_DIFFUSE, l->scene_diffuse );
349 if ( current_options.get_textures() ) {
350 // texture parameters
351 xglEnable( GL_TEXTURE_2D );
352 xglTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
353 xglHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
354 // set base color (I don't think this is doing anything here)
355 xglMaterialfv (GL_FRONT, GL_AMBIENT, white);
356 xglMaterialfv (GL_FRONT, GL_DIFFUSE, white);
358 xglDisable( GL_TEXTURE_2D );
359 xglMaterialfv (GL_FRONT, GL_AMBIENT, terrain_color);
360 xglMaterialfv (GL_FRONT, GL_DIFFUSE, terrain_color);
361 // xglMaterialfv (GL_FRONT, GL_AMBIENT, white);
362 // xglMaterialfv (GL_FRONT, GL_DIFFUSE, white);
367 xglDisable( GL_TEXTURE_2D );
369 if ( (iteration == 0) && (current_options.get_panel_status()) ) {
370 // Did we run this loop before ?? ...and do we need the panel ??
374 // display HUD && Panel
375 if ( current_options.get_panel_status() ) {
376 xglViewport(0, 0, v->winWidth, v->winHeight);
379 iteration = 1; // don't ReInit the panel in the future
381 // We can do translucent menus, so why not. :-)
382 xglEnable ( GL_BLEND ) ;
383 xglBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
385 xglDisable ( GL_BLEND ) ;
392 // Update internal time dependent calculations (i.e. flight model)
393 void fgUpdateTimeDepCalcs(int multi_loop) {
400 f = current_aircraft.flight;
401 l = &cur_light_params;
402 t = &cur_time_params;
405 // update the flight model
406 if ( multi_loop < 0 ) {
407 multi_loop = DEFAULT_MULTILOOP;
411 // printf("updating flight model x %d\n", multi_loop);
412 fgFlightModelUpdate(current_options.get_flight_model(), f, multi_loop);
414 fgFlightModelUpdate(current_options.get_flight_model(), f, 0);
417 // update the view angle
418 for ( i = 0; i < multi_loop; i++ ) {
419 if ( fabs(v->goal_view_offset - v->view_offset) < 0.05 ) {
420 v->view_offset = v->goal_view_offset;
423 // move v->view_offset towards v->goal_view_offset
424 if ( v->goal_view_offset > v->view_offset ) {
425 if ( v->goal_view_offset - v->view_offset < FG_PI ) {
426 v->view_offset += 0.01;
428 v->view_offset -= 0.01;
431 if ( v->view_offset - v->goal_view_offset < FG_PI ) {
432 v->view_offset -= 0.01;
434 v->view_offset += 0.01;
437 if ( v->view_offset > FG_2PI ) {
438 v->view_offset -= FG_2PI;
439 } else if ( v->view_offset < 0 ) {
440 v->view_offset += FG_2PI;
445 double tmp = -(l->sun_rotation + FG_PI) - (FG_Psi - v->view_offset);
446 while ( tmp < 0.0 ) {
449 while ( tmp > FG_2PI ) {
452 /* printf("Psi = %.2f, viewoffset = %.2f sunrot = %.2f rottosun = %.2f\n",
453 FG_Psi * RAD_TO_DEG, v->view_offset * RAD_TO_DEG,
454 -(l->sun_rotation+FG_PI) * RAD_TO_DEG, tmp * RAD_TO_DEG); */
459 void fgInitTimeDepCalcs( void ) {
462 #ifdef HAVE_SETITIMER
463 fgTimerInit( 1.0 / DEFAULT_TIMER_HZ, fgUpdateTimeDepCalcs );
464 #endif HAVE_SETITIMER
468 static const double alt_adjust_ft = 3.758099;
469 static const double alt_adjust_m = alt_adjust_ft * FEET_TO_METER;
471 // What should we do when we have nothing else to do? Let's get ready
472 // for the next move and update the display?
473 static void fgMainLoop( void ) {
477 static int remainder = 0;
478 int elapsed, multi_loop;
481 // double joy_x, joy_y;
482 // int joy_b1, joy_b2;
484 f = current_aircraft.flight;
486 t = &cur_time_params;
488 fgPrintf( FG_ALL, FG_DEBUG, "Running Main Loop\n");
489 fgPrintf( FG_ALL, FG_DEBUG, "======= ==== ====\n");
491 // Fix elevation. I'm just sticking this here for now, it should
492 // probably move eventually
494 /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
496 FG_Runway_altitude * FEET_TO_METER,
497 FG_Altitude * FEET_TO_METER); */
499 if ( scenery.cur_elev > -9990 ) {
500 if ( FG_Altitude * FEET_TO_METER <
501 (scenery.cur_elev + alt_adjust_m - 3.0) ) {
502 // now set aircraft altitude above ground
503 printf("Current Altitude = %.2f < %.2f forcing to %.2f\n",
504 FG_Altitude * FEET_TO_METER,
505 scenery.cur_elev + alt_adjust_m - 3.0,
506 scenery.cur_elev + alt_adjust_m );
507 fgFlightModelSetAltitude( current_options.get_flight_model(), f,
508 scenery.cur_elev + alt_adjust_m );
510 fgPrintf( FG_ALL, FG_BULK,
511 "<*> resetting altitude to %.0f meters\n",
512 FG_Altitude * FEET_TO_METER);
514 FG_Runway_altitude = scenery.cur_elev * METER_TO_FEET;
517 /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
519 FG_Runway_altitude * FEET_TO_METER,
520 FG_Altitude * FEET_TO_METER); */
526 /* fgJoystickRead( &joy_x, &joy_y, &joy_b1, &joy_b2 );
527 printf( "Joystick X %f Y %f B1 %d B2 %d\n",
528 joy_x, joy_y, joy_b1, joy_b2 );
530 fgAileronSet( joy_x ); */
532 // Get elapsed time for this past frame
533 elapsed = fgGetTimeInterval();
534 fgPrintf( FG_ALL, FG_BULK,
535 "Time interval is = %d, previous remainder is = %d\n",
538 // Calculate frame rate average
539 if ( elapsed > 0.0 ) {
541 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
542 accum += g->frames[i];
543 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
544 g->frames[i+1] = g->frames[i];
546 g->frames[0] = 1000.0 / (float)elapsed;
547 // printf("frame[0] = %.2f\n", g->frames[0]);
548 accum += g->frames[0];
549 g->frame_rate = accum / (float)FG_FRAME_RATE_HISTORY;
550 // printf("ave = %.2f\n", g->frame_rate);
553 // Calculate model iterations needed for next frame
554 fgPrintf( FG_ALL, FG_DEBUG,
555 "--> Frame rate is = %.2f\n", g->frame_rate);
556 elapsed += remainder;
558 multi_loop = (int)(((float)elapsed * 0.001) * DEFAULT_MODEL_HZ);
559 remainder = elapsed - ((multi_loop*1000) / DEFAULT_MODEL_HZ);
560 fgPrintf( FG_ALL, FG_BULK,
561 "Model iterations needed = %d, new remainder = %d\n",
562 multi_loop, remainder);
564 /* printf("right before fm - ground = %.2f runway = %.2f alt = %.2f\n",
566 FG_Runway_altitude * FEET_TO_METER,
567 FG_Altitude * FEET_TO_METER); */
570 if ( ! use_signals ) {
572 fgUpdateTimeDepCalcs(multi_loop);
575 /* printf("After fm - ground = %.2f runway = %.2f alt = %.2f\n",
577 FG_Runway_altitude * FEET_TO_METER,
578 FG_Altitude * FEET_TO_METER); */
580 // fgAircraftOutputCurrent(a);
582 // see if we need to load any new scenery tiles
585 // Process/manage pending events
586 global_events.Process();
588 // Run audio scheduler
589 #ifdef ENABLE_AUDIO_SUPPORT
590 if ( current_options.get_sound() ) {
591 audio_sched -> update();
598 fgPrintf( FG_ALL, FG_DEBUG, "\n");
602 // This is the top level master main function that is registered as
606 // The first few passes take care of initialization things (a couple
607 // per pass) and once everything has been initialized fgMainLoop from
610 static void fgIdleFunction ( void ) {
615 // printf("idle state == %d\n", idle_state);
617 if ( idle_state == 0 ) {
618 // Initialize the splash screen right away
619 if ( current_options.get_splash_screen() ) {
624 } else if ( idle_state == 1 ) {
625 // Start the intro music
627 if ( current_options.get_intro_music() ) {
628 string lockfile = "/tmp/mpg123.running";
629 string mp3file = current_options.get_fg_root() +
631 string command = "(touch " + lockfile + "; mpg123 " + mp3file +
632 "> /dev/null 2>&1; /bin/rm " + lockfile + ") &";
633 fgPrintf( FG_GENERAL, FG_INFO,
634 "Starting intro music: %s\n", mp3file.c_str() );
635 system ( command.c_str() );
640 } else if ( idle_state == 2 ) {
641 // These are a few miscellaneous things that aren't really
642 // "subsystems" but still need to be initialized.
645 if ( strstr ( g->glRenderer, "Glide" ) ) {
646 grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
651 } else if ( idle_state == 3 ) {
652 // This is the top level init routine which calls all the
653 // other subsystem initialization routines. If you are adding
654 // a subsystem to flight gear, its initialization call should
655 // located in this routine.
656 if( !fgInitSubsystems()) {
657 fgPrintf( FG_GENERAL, FG_EXIT,
658 "Subsystem initializations failed ...\n" );
662 } else if ( idle_state == 4 ) {
663 // setup OpenGL view parameters
667 // init timer routines, signals, etc. Arrange for an alarm
668 // signal to be generated, etc.
669 fgInitTimeDepCalcs();
673 } else if ( idle_state == 5 ) {
676 } else if ( idle_state == 6 ) {
677 // Initialize audio support
678 #ifdef ENABLE_AUDIO_SUPPORT
681 if ( current_options.get_intro_music() ) {
682 // Let's wait for mpg123 to finish
683 string lockfile = "/tmp/mpg123.running";
684 struct stat stat_buf;
686 fgPrintf( FG_GENERAL, FG_INFO,
687 "Waiting for mpg123 player to finish ...\n" );
688 while ( stat(lockfile.c_str(), &stat_buf) == 0 ) {
689 // file exist, wait ...
691 fgPrintf( FG_GENERAL, FG_INFO, ".");
693 fgPrintf( FG_GENERAL, FG_INFO, "\n");
697 audio_sched = new slScheduler ( 8000 );
698 audio_mixer = new smMixer;
699 audio_mixer -> setMasterVolume ( 80 ) ; /* 80% of max volume. */
700 audio_sched -> setSafetyMargin ( 1.0 ) ;
701 string slfile = current_options.get_fg_root() + "/Sounds/wasp.wav";
703 s1 = new slSample ( (char *)slfile.c_str() );
704 printf("Rate = %d Bps = %d Stereo = %d\n",
705 s1 -> getRate(), s1 -> getBps(), s1 -> getStereo());
706 audio_sched -> loopSample ( s1 );
708 // strcpy(slfile, path);
709 // strcat(slfile, "thunder.wav");
710 // s2 -> loadFile ( slfile );
711 // s2 -> adjustVolume(0.5);
712 // audio_sched -> playSample ( s2 );
719 if ( idle_state == 1000 ) {
720 // We've finished all our initialization steps, from now on we
721 // run the main loop.
725 if ( current_options.get_splash_screen() == 1 ) {
732 // Handle new window size or exposure
733 static void fgReshape( int width, int height ) {
738 // Do this so we can call fgReshape(0,0) ourselves without having
739 // to know what the values of width & height are.
740 if ( (height > 0) && (width > 0) ) {
741 if ( ! current_options.get_panel_status() ) {
742 v->win_ratio = (GLfloat) width / (GLfloat) height;
744 v->win_ratio = (GLfloat) width / ((GLfloat) (height)*0.67);
749 v->winHeight = height;
751 // Inform gl of our view window size (now handled elsewhere)
752 // xglViewport(0, 0, (GLint)width, (GLint)height);
753 if ( idle_state == 1000 ) {
754 // yes we've finished all our initializations and are running
755 // the main loop, so this will now work without seg faulting
757 v->UpdateViewParams();
758 if ( current_options.get_panel_status() ) {
763 // xglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
767 // Initialize GLUT and define a main window
768 int fgGlutInit( int *argc, char **argv ) {
769 // GLUT will extract all glut specific options so later on we only
770 // need wory about our own.
771 xglutInit(argc, argv);
773 // Define Display Parameters
774 if ( ! current_options.get_panel_status() ) {
775 xglutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
777 xglutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE |
781 // Define initial window size
782 xglutInitWindowSize(640, 480);
784 // Initialize windows
785 if ( current_options.get_game_mode() == 0 ) {
786 // Open the regular window
787 xglutCreateWindow("Flight Gear");
789 // Open the cool new 'game mode' window
790 glutGameModeString("width=640 height=480 bpp=16");
798 // Initialize GLUT event handlers
799 int fgGlutInitEvents( void ) {
800 // call fgReshape() on window resizes
801 xglutReshapeFunc( fgReshape );
803 // call GLUTkey() on keyboard event
804 xglutKeyboardFunc( GLUTkey );
805 glutSpecialFunc( GLUTspecialkey );
807 // call guiMouseFunc() whenever our little rodent is used
808 glutMouseFunc ( guiMouseFunc );
809 glutMotionFunc (guiMotionFunc );
810 glutPassiveMotionFunc (guiMotionFunc );
812 // call fgMainLoop() whenever there is
813 // nothing else to do
814 xglutIdleFunc( fgIdleFunction );
817 xglutDisplayFunc( fgRenderFrame );
824 int main( int argc, char **argv ) {
827 f = current_aircraft.flight;
830 _control87(MCW_EM, MCW_EM); /* defined in float.h */
833 // Initialize the debugging output system
836 fgPrintf(FG_GENERAL, FG_INFO, "Flight Gear: Version %s\n\n", VERSION);
838 // Attempt to locate and parse a config file
839 // First check fg_root
840 string config = current_options.get_fg_root() + "/system.fgfsrc";
841 current_options.parse_config_file( config );
843 // Next check home directory
844 char* envp = ::getenv( "HOME" );
845 if ( envp != NULL ) {
847 config += "/.fgfsrc";
848 current_options.parse_config_file( config );
851 // Parse remaining command line options
852 // These will override anything specified in a config file
853 if ( current_options.parse_command_line(argc, argv) !=
854 fgOPTIONS::FG_OPTIONS_OK )
856 // Something must have gone horribly wrong with the command
857 // line parsing or maybe the user just requested help ... :-)
858 current_options.usage();
859 fgPrintf( FG_GENERAL, FG_EXIT, "\nExiting ...\n");
862 // Initialize the Window/Graphics environment.
863 if( !fgGlutInit(&argc, argv) ) {
864 fgPrintf( FG_GENERAL, FG_EXIT, "GLUT initialization failed ...\n" );
867 // Initialize the various GLUT Event Handlers.
868 if( !fgGlutInitEvents() ) {
869 fgPrintf( FG_GENERAL, FG_EXIT,
870 "GLUT event handler initialization failed ...\n" );
873 // First do some quick general initializations
874 if( !fgInitGeneral()) {
875 fgPrintf( FG_GENERAL, FG_EXIT,
876 "General initializations failed ...\n" );
879 // Init the user interface (we need to do this before passing off
883 // pass control off to the master GLUT event handler
886 // we never actually get here ... but just in case ... :-)
892 // Revision 1.49 1998/09/09 16:25:39 curt
893 // Only use GLUT_STENCIL if the instument panel has been requested.
895 // Revision 1.48 1998/08/28 18:15:03 curt
896 // Added new cockpit code from Friedemann Reinhard
897 // <mpt218@faupt212.physik.uni-erlangen.de>
899 // Revision 1.47 1998/08/27 17:02:04 curt
900 // Contributions from Bernie Bright <bbright@c031.aone.net.au>
901 // - use strings for fg_root and airport_id and added methods to return
903 // - inlined all access methods,
904 // - made the parsing functions private methods,
905 // - deleted some unused functions.
906 // - propogated some of these changes out a bit further.
908 // Revision 1.46 1998/08/22 14:49:56 curt
909 // Attempting to iron out seg faults and crashes.
910 // Did some shuffling to fix a initialization order problem between view
911 // position, scenery elevation.
913 // Revision 1.45 1998/08/20 20:32:31 curt
914 // Reshuffled some of the code in and around views.[ch]xx
916 // Revision 1.44 1998/08/20 15:10:33 curt
917 // Added GameGLUT support.
919 // Revision 1.43 1998/08/12 21:01:47 curt
920 // Master volume from 30% -> 80%
922 // Revision 1.42 1998/07/30 23:48:25 curt
923 // Output position & orientation when pausing.
924 // Eliminated libtool use.
925 // Added options to specify initial position and orientation.
926 // Changed default fov to 55 degrees.
927 // Added command line option to start in paused or unpaused state.
929 // Revision 1.41 1998/07/27 18:41:24 curt
930 // Added a pause command "p"
931 // Fixed some initialization order problems between pui and glut.
932 // Added an --enable/disable-sound option.
934 // Revision 1.40 1998/07/24 21:56:59 curt
935 // 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.
937 // Revision 1.39 1998/07/24 21:39:08 curt
938 // Debugging output tweaks.
939 // Cast glGetString to (char *) to avoid compiler errors.
940 // Optimizations to fgGluLookAt() by Norman Vine.
942 // Revision 1.38 1998/07/22 21:40:43 curt
943 // Clear to adjusted fog color (for sunrise/sunset effects)
944 // Make call to fog sunrise/sunset adjustment method.
945 // Add a stdc++ library bug work around to fg_init.cxx
947 // Revision 1.37 1998/07/20 12:49:44 curt
948 // Tweaked color buffer clearing defaults. We clear the color buffer if we
949 // are doing textures. Assumptions: If we are doing textures we have hardware
950 // support that can clear the color buffer for "free." If we are doing software
951 // rendering with textures, then the extra clear time gets lost in the noise.
953 // Revision 1.36 1998/07/16 17:33:35 curt
954 // "H" / "h" now control hud brightness as well with off being one of the
956 // Better checking for xmesa/fx 3dfx fullscreen/window support for deciding
957 // whether or not to build in the feature.
958 // Translucent menu support.
959 // HAVE_AUDIO_SUPPORT -> ENABLE_AUDIO_SUPPORT
960 // Use fork() / wait() for playing mp3 init music in background under unix.
961 // Changed default tile diameter to 5.
963 // Revision 1.35 1998/07/13 21:01:36 curt
964 // Wrote access functions for current fgOPTIONS.
966 // Revision 1.34 1998/07/13 15:32:37 curt
967 // Clear color buffer if drawing wireframe.
968 // When specifying and airport, start elevation at -1000 and let the system
969 // position you at ground level.
971 // Revision 1.33 1998/07/12 03:14:42 curt
972 // Added ground collision detection.
973 // Did some serious horsing around to be able to "hug" the ground properly
974 // and still be able to take off.
975 // Set the near clip plane to 1.0 meters when less than 10 meters above the
977 // Did some serious horsing around getting the initial airplane position to be
978 // correct based on rendered terrain elevation.
979 // Added a little cheat/hack that will prevent the view position from ever
980 // dropping below the terrain, even when the flight model doesn't quite
981 // put you as high as you'd like.
983 // Revision 1.32 1998/07/08 14:45:07 curt
984 // polar3d.h renamed to polar3d.hxx
985 // vector.h renamed to vector.hxx
986 // updated audio support so it waits to create audio classes (and tie up
987 // /dev/dsp) until the mpg123 player is finished.
989 // Revision 1.31 1998/07/06 21:34:17 curt
990 // Added an enable/disable splash screen option.
991 // Added an enable/disable intro music option.
992 // Added an enable/disable instrument panel option.
993 // Added an enable/disable mouse pointer option.
994 // Added using namespace std for compilers that support this.
996 // Revision 1.30 1998/07/06 02:42:03 curt
997 // Added support for switching between fullscreen and window mode for
1000 // Added a basic splash screen. Restructured the main loop and top level
1001 // initialization routines to do this.
1003 // Hacked in some support for playing a startup mp3 sound file while rest
1004 // of sim initializes. Currently only works in Unix using the mpg123 player.
1005 // Waits for the mpg123 player to finish before initializing internal
1008 // Revision 1.29 1998/07/04 00:52:22 curt
1009 // Add my own version of gluLookAt() (which is nearly identical to the
1010 // Mesa/glu version.) But, by calculating the Model View matrix our selves
1011 // we can save this matrix without having to read it back in from the video
1012 // card. This hopefully allows us to save a few cpu cycles when rendering
1013 // out the fragments because we can just use glLoadMatrixd() with the
1014 // precalculated matrix for each tile rather than doing a push(), translate(),
1015 // pop() for every fragment.
1017 // Panel status defaults to off for now until it gets a bit more developed.
1019 // Extract OpenGL driver info on initialization.
1021 // Revision 1.28 1998/06/27 16:54:32 curt
1022 // Replaced "extern displayInstruments" with a entry in fgOPTIONS.
1023 // Don't change the view port when displaying the panel.
1025 // Revision 1.27 1998/06/17 21:35:10 curt
1026 // Refined conditional audio support compilation.
1027 // Moved texture parameter setup calls to ../Scenery/materials.cxx
1028 // #include <string.h> before various STL includes.
1029 // Make HUD default state be enabled.
1031 // Revision 1.26 1998/06/13 00:40:32 curt
1032 // Tweaked fog command line options.
1034 // Revision 1.25 1998/06/12 14:27:26 curt
1035 // Pui -> PUI, Gui -> GUI.
1037 // Revision 1.24 1998/06/12 00:57:39 curt
1038 // Added support for Pui/Gui.
1039 // Converted fog to GL_FOG_EXP2.
1040 // Link to static simulator parts.
1041 // Update runfg.bat to try to be a little smarter.
1043 // Revision 1.23 1998/06/08 17:57:04 curt
1044 // Minor sound/startup position tweaks.
1046 // Revision 1.22 1998/06/05 18:18:40 curt
1047 // A bit of fiddling with audio ...
1049 // Revision 1.21 1998/06/03 22:01:06 curt
1050 // Tweaking sound library usage.
1052 // Revision 1.20 1998/06/03 00:47:11 curt
1053 // Updated to compile in audio support if OSS available.
1054 // Updated for new version of Steve's audio library.
1055 // STL includes don't use .h
1056 // Small view optimizations.
1058 // Revision 1.19 1998/06/01 17:54:40 curt
1059 // Added Linux audio support.
1060 // avoid glClear( COLOR_BUFFER_BIT ) when not using it to set the sky color.
1063 // Revision 1.18 1998/05/29 20:37:19 curt
1064 // Tweaked material properties & lighting a bit in GLUTmain.cxx.
1065 // Read airport list into a "map" STL for dynamic list sizing and fast tree
1068 // Revision 1.17 1998/05/22 21:28:52 curt
1069 // Modifications to use the new fgEVENT_MGR class.
1071 // Revision 1.16 1998/05/20 20:51:33 curt
1072 // Tweaked smooth shaded texture lighting properties.
1073 // Converted fgLIGHT to a C++ class.
1075 // Revision 1.15 1998/05/16 13:08:34 curt
1076 // C++ - ified views.[ch]xx
1077 // Shuffled some additional view parameters into the fgVIEW class.
1078 // Changed tile-radius to tile-diameter because it is a much better
1080 // Added a WORLD_TO_EYE transformation to views.cxx. This allows us
1081 // to transform world space to eye space for view frustum culling.
1083 // Revision 1.14 1998/05/13 18:29:57 curt
1084 // Added a keyboard binding to dynamically adjust field of view.
1085 // Added a command line option to specify fov.
1086 // Adjusted terrain color.
1087 // Root path info moved to fgOPTIONS.
1088 // Added ability to parse options out of a config file.
1090 // Revision 1.13 1998/05/11 18:18:15 curt
1091 // For flat shading use "glHint (GL_FOG_HINT, GL_FASTEST )"
1093 // Revision 1.12 1998/05/07 23:14:15 curt
1094 // Added "D" key binding to set autopilot heading.
1095 // Made frame rate calculation average out over last 10 frames.
1096 // Borland C++ floating point exception workaround.
1097 // Added a --tile-radius=n option.
1099 // Revision 1.11 1998/05/06 03:16:23 curt
1100 // Added an averaged global frame rate counter.
1101 // Added an option to control tile radius.
1103 // Revision 1.10 1998/05/03 00:47:31 curt
1104 // Added an option to enable/disable full-screen mode.
1106 // Revision 1.9 1998/04/30 12:34:17 curt
1107 // Added command line rendering options:
1108 // enable/disable fog/haze
1109 // specify smooth/flat shading
1110 // disable sky blending and just use a solid color
1111 // enable wireframe drawing mode
1113 // Revision 1.8 1998/04/28 01:20:21 curt
1114 // Type-ified fgTIME and fgVIEW.
1115 // Added a command line option to disable textures.
1117 // Revision 1.7 1998/04/26 05:10:02 curt
1118 // "struct fgLIGHT" -> "fgLIGHT" because fgLIGHT is typedef'd.
1120 // Revision 1.6 1998/04/25 22:06:30 curt
1121 // Edited cvs log messages in source files ... bad bad bad!
1123 // Revision 1.5 1998/04/25 20:24:01 curt
1124 // Cleaned up initialization sequence to eliminate interdependencies
1125 // between sun position, lighting, and view position. This creates a
1126 // valid single pass initialization path.
1128 // Revision 1.4 1998/04/24 14:19:30 curt
1131 // Revision 1.3 1998/04/24 00:49:18 curt
1132 // Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
1133 // Trying out some different option parsing code.
1134 // Some code reorganization.
1136 // Revision 1.2 1998/04/22 13:25:41 curt
1137 // C++ - ifing the code.
1138 // Starting a bit of reorganization of lighting code.
1140 // Revision 1.1 1998/04/21 17:02:39 curt
1141 // Prepairing for C++ integration.
1143 // Revision 1.71 1998/04/18 04:11:26 curt
1144 // Moved fg_debug to it's own library, added zlib support.
1146 // Revision 1.70 1998/04/14 02:21:02 curt
1147 // Incorporated autopilot heading hold contributed by: Jeff Goeke-Smith
1148 // <jgoeke@voyager.net>
1150 // Revision 1.69 1998/04/08 23:35:34 curt
1151 // Tweaks to Gnu automake/autoconf system.
1153 // Revision 1.68 1998/04/03 22:09:03 curt
1154 // Converting to Gnu autoconf system.
1156 // Revision 1.67 1998/03/23 21:24:37 curt
1157 // Source code formating tweaks.
1159 // Revision 1.66 1998/03/14 00:31:20 curt
1160 // Beginning initial terrain texturing experiments.
1162 // Revision 1.65 1998/03/09 22:45:57 curt
1163 // Minor tweaks for building on sparc platform.
1165 // Revision 1.64 1998/02/20 00:16:23 curt
1166 // Thursday's tweaks.
1168 // Revision 1.63 1998/02/16 16:17:39 curt
1171 // Revision 1.62 1998/02/16 13:39:42 curt
1172 // Miscellaneous weekend tweaks. Fixed? a cache problem that caused whole
1173 // tiles to occasionally be missing.
1175 // Revision 1.61 1998/02/12 21:59:46 curt
1176 // Incorporated code changes contributed by Charlie Hotchkiss
1177 // <chotchkiss@namg.us.anritsu.com>
1179 // Revision 1.60 1998/02/11 02:50:40 curt
1182 // Revision 1.59 1998/02/09 22:56:54 curt
1183 // Removed "depend" files from cvs control. Other minor make tweaks.
1185 // Revision 1.58 1998/02/09 15:07:49 curt
1188 // Revision 1.57 1998/02/07 15:29:40 curt
1189 // Incorporated HUD changes and struct/typedef changes from Charlie Hotchkiss
1190 // <chotchkiss@namg.us.anritsu.com>
1192 // Revision 1.56 1998/02/03 23:20:23 curt
1193 // Lots of little tweaks to fix various consistency problems discovered by
1194 // Solaris' CC. Fixed a bug in fg_debug.c with how the fgPrintf() wrapper
1195 // passed arguments along to the real printf(). Also incorporated HUD changes
1196 // by Michele America.
1198 // Revision 1.55 1998/02/02 20:53:58 curt
1199 // Incorporated Durk's changes.
1201 // Revision 1.54 1998/01/31 00:43:10 curt
1202 // Added MetroWorks patches from Carmen Volpe.
1204 // Revision 1.53 1998/01/27 18:35:54 curt
1207 // Revision 1.52 1998/01/27 00:47:56 curt
1208 // Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
1209 // system and commandline/config file processing code.
1211 // Revision 1.51 1998/01/26 15:57:05 curt
1212 // Tweaks for dynamic scenery development.
1214 // Revision 1.50 1998/01/19 19:27:07 curt
1215 // Merged in make system changes from Bob Kuehne <rpk@sgi.com>
1216 // This should simplify things tremendously.
1218 // Revision 1.49 1998/01/19 18:40:31 curt
1219 // Tons of little changes to clean up the code and to remove fatal errors
1220 // when building with the c++ compiler.
1222 // Revision 1.48 1998/01/19 18:35:46 curt
1223 // Minor tweaks and fixes for cygwin32.
1225 // Revision 1.47 1998/01/13 00:23:08 curt
1226 // Initial changes to support loading and management of scenery tiles. Note,
1227 // there's still a fair amount of work left to be done.
1229 // Revision 1.46 1998/01/08 02:22:06 curt
1230 // Beginning to integrate Tile management subsystem.
1232 // Revision 1.45 1998/01/07 03:18:55 curt
1233 // Moved astronomical stuff from .../Src/Scenery to .../Src/Astro/
1235 // Revision 1.44 1997/12/30 22:22:31 curt
1236 // Further integration of event manager.
1238 // Revision 1.43 1997/12/30 20:47:43 curt
1239 // Integrated new event manager with subsystem initializations.
1241 // Revision 1.42 1997/12/30 16:36:47 curt
1242 // Merged in Durk's changes ...
1244 // Revision 1.41 1997/12/30 13:06:56 curt
1245 // A couple lighting tweaks ...
1247 // Revision 1.40 1997/12/30 01:38:37 curt
1248 // Switched back to per vertex normals and smooth shading for terrain.
1250 // Revision 1.39 1997/12/22 23:45:45 curt
1251 // First stab at sunset/sunrise sky glow effects.
1253 // Revision 1.38 1997/12/22 04:14:28 curt
1254 // Aligned sky with sun so dusk/dawn effects can be correct relative to the sun.
1256 // Revision 1.37 1997/12/19 23:34:03 curt
1257 // Lot's of tweaking with sky rendering and lighting.
1259 // Revision 1.36 1997/12/19 16:44:57 curt
1260 // Working on scene rendering order and options.
1262 // Revision 1.35 1997/12/18 23:32:32 curt
1263 // First stab at sky dome actually starting to look reasonable. :-)
1265 // Revision 1.34 1997/12/17 23:13:34 curt
1266 // Began working on rendering a sky.
1268 // Revision 1.33 1997/12/15 23:54:45 curt
1269 // Add xgl wrappers for debugging.
1270 // Generate terrain normals on the fly.
1272 // Revision 1.32 1997/12/15 20:59:08 curt
1275 // Revision 1.31 1997/12/12 21:41:25 curt
1276 // More light/material property tweaking ... still a ways off.
1278 // Revision 1.30 1997/12/12 19:52:47 curt
1279 // Working on lightling and material properties.
1281 // Revision 1.29 1997/12/11 04:43:54 curt
1282 // Fixed sun vector and lighting problems. I thing the moon is now lit
1285 // Revision 1.28 1997/12/10 22:37:45 curt
1286 // Prepended "fg" on the name of all global structures that didn't have it yet.
1287 // i.e. "struct WEATHER {}" became "struct fgWEATHER {}"
1289 // Revision 1.27 1997/12/09 05:11:54 curt
1290 // Working on tweaking lighting.
1292 // Revision 1.26 1997/12/09 04:25:29 curt
1293 // Working on adding a global lighting params structure.
1295 // Revision 1.25 1997/12/08 22:54:09 curt
1296 // Enabled GL_CULL_FACE.
1298 // Revision 1.24 1997/11/25 19:25:32 curt
1299 // Changes to integrate Durk's moon/sun code updates + clean up.
1301 // Revision 1.23 1997/11/15 18:16:34 curt
1304 // Revision 1.22 1997/10/30 12:38:41 curt
1305 // Working on new scenery subsystem.
1307 // Revision 1.21 1997/09/23 00:29:38 curt
1308 // Tweaks to get things to compile with gcc-win32.
1310 // Revision 1.20 1997/09/22 14:44:19 curt
1311 // Continuing to try to align stars correctly.
1313 // Revision 1.19 1997/09/18 16:20:08 curt
1314 // At dusk/dawn add/remove stars in stages.
1316 // Revision 1.18 1997/09/16 22:14:51 curt
1317 // Tweaked time of day lighting equations. Don't draw stars during the day.
1319 // Revision 1.17 1997/09/16 15:50:29 curt
1320 // Working on star alignment and time issues.
1322 // Revision 1.16 1997/09/13 02:00:06 curt
1323 // Mostly working on stars and generating sidereal time for accurate star
1326 // Revision 1.15 1997/09/05 14:17:27 curt
1327 // More tweaking with stars.
1329 // Revision 1.14 1997/09/05 01:35:53 curt
1330 // Working on getting stars right.
1332 // Revision 1.13 1997/09/04 02:17:34 curt
1335 // Revision 1.12 1997/08/27 21:32:24 curt
1336 // Restructured view calculation code. Added stars.
1338 // Revision 1.11 1997/08/27 03:30:16 curt
1339 // Changed naming scheme of basic shared structures.
1341 // Revision 1.10 1997/08/25 20:27:22 curt
1342 // Merged in initial HUD and Joystick code.
1344 // Revision 1.9 1997/08/22 21:34:39 curt
1345 // Doing a bit of reorganizing and house cleaning.
1347 // Revision 1.8 1997/08/19 23:55:03 curt
1348 // Worked on better simulating real lighting.
1350 // Revision 1.7 1997/08/16 12:22:38 curt
1351 // Working on improving the lighting/shading.
1353 // Revision 1.6 1997/08/13 20:24:56 curt
1354 // Changes due to changing sunpos interface.
1356 // Revision 1.5 1997/08/06 21:08:32 curt
1357 // Sun position now really* works (I think) ... I still have sun time warping
1358 // code in place, probably should remove it soon.
1360 // Revision 1.4 1997/08/06 15:41:26 curt
1361 // Working on correct sun position.
1363 // Revision 1.3 1997/08/06 00:24:22 curt
1364 // Working on correct real time sun lighting.
1366 // Revision 1.2 1997/08/04 20:25:15 curt
1367 // Organizational tweaking.
1369 // Revision 1.1 1997/08/02 18:45:00 curt
1370 // Renamed GLmain.c GLUTmain.c
1372 // Revision 1.43 1997/08/02 16:23:47 curt
1375 // Revision 1.42 1997/08/01 19:43:33 curt
1376 // Making progress with coordinate system overhaul.
1378 // Revision 1.41 1997/07/31 22:52:37 curt
1379 // Working on redoing internal coordinate systems & scenery transformations.
1381 // Revision 1.40 1997/07/30 16:12:42 curt
1382 // Moved fg_random routines from Util/ to Math/
1384 // Revision 1.39 1997/07/21 14:45:01 curt
1387 // Revision 1.38 1997/07/19 23:04:47 curt
1388 // Added an initial weather section.
1390 // Revision 1.37 1997/07/19 22:34:02 curt
1391 // Moved PI definitions to ../constants.h
1392 // Moved random() stuff to ../Utils/ and renamed fg_random()
1394 // Revision 1.36 1997/07/18 23:41:25 curt
1395 // Tweaks for building with Cygnus Win32 compiler.
1397 // Revision 1.35 1997/07/18 14:28:34 curt
1398 // Hacked in some support for wind/turbulence.
1400 // Revision 1.34 1997/07/16 20:04:48 curt
1401 // Minor tweaks to aid Win32 port.
1403 // Revision 1.33 1997/07/12 03:50:20 curt
1404 // Added an #include <Windows32/Base.h> to help compiling for Win32
1406 // Revision 1.32 1997/07/11 03:23:18 curt
1407 // Solved some scenery display/orientation problems. Still have a positioning
1408 // (or transformation?) problem.
1410 // Revision 1.31 1997/07/11 01:29:58 curt
1411 // More tweaking of terrian floor.
1413 // Revision 1.30 1997/07/10 04:26:37 curt
1414 // We now can interpolated ground elevation for any position in the grid. We
1415 // can use this to enforce a "hard" ground. We still need to enforce some
1416 // bounds checking so that we don't try to lookup data points outside the
1419 // Revision 1.29 1997/07/09 21:31:12 curt
1420 // Working on making the ground "hard."
1422 // Revision 1.28 1997/07/08 18:20:12 curt
1423 // Working on establishing a hard ground.
1425 // Revision 1.27 1997/07/07 20:59:49 curt
1426 // Working on scenery transformations to enable us to fly fluidly over the
1427 // poles with no discontinuity/distortion in scenery.
1429 // Revision 1.26 1997/07/05 20:43:34 curt
1430 // renamed mat3 directory to Math so we could add other math related routines.
1432 // Revision 1.25 1997/06/29 21:19:17 curt
1433 // Working on scenery management system.
1435 // Revision 1.24 1997/06/26 22:14:53 curt
1436 // Beginning work on a scenery management system.
1438 // Revision 1.23 1997/06/26 19:08:33 curt
1439 // Restructuring make, adding automatic "make dep" support.
1441 // Revision 1.22 1997/06/25 15:39:47 curt
1442 // Minor changes to compile with rsxnt/win32.
1444 // Revision 1.21 1997/06/22 21:44:41 curt
1445 // Working on intergrating the VRML (subset) parser.
1447 // Revision 1.20 1997/06/21 17:12:53 curt
1448 // Capitalized subdirectory names.
1450 // Revision 1.19 1997/06/18 04:10:31 curt
1451 // A couple more runway tweaks ...
1453 // Revision 1.18 1997/06/18 02:21:24 curt
1454 // Hacked in a runway
1456 // Revision 1.17 1997/06/17 16:51:58 curt
1457 // Timer interval stuff now uses gettimeofday() instead of ftime()
1459 // Revision 1.16 1997/06/17 04:19:16 curt
1460 // More timer related tweaks with respect to view direction changes.
1462 // Revision 1.15 1997/06/17 03:41:10 curt
1463 // Nonsignal based interval timing is now working.
1464 // This would be a good time to look at cleaning up the code structure a bit.
1466 // Revision 1.14 1997/06/16 19:32:51 curt
1467 // Starting to add general timer support.
1469 // Revision 1.13 1997/06/02 03:40:06 curt
1470 // A tiny bit more view tweaking.
1472 // Revision 1.12 1997/06/02 03:01:38 curt
1473 // Working on views (side, front, back, transitions, etc.)
1475 // Revision 1.11 1997/05/31 19:16:25 curt
1476 // Elevator trim added.
1478 // Revision 1.10 1997/05/31 04:13:52 curt
1479 // WE CAN NOW FLY!!!
1481 // Continuing work on the LaRCsim flight model integration.
1482 // Added some MSFS-like keyboard input handling.
1484 // Revision 1.9 1997/05/30 19:27:01 curt
1485 // The LaRCsim flight model is starting to look like it is working.
1487 // Revision 1.8 1997/05/30 03:54:10 curt
1488 // Made a bit more progress towards integrating the LaRCsim flight model.
1490 // Revision 1.7 1997/05/29 22:39:49 curt
1491 // Working on incorporating the LaRCsim flight model.
1493 // Revision 1.6 1997/05/29 12:31:39 curt
1494 // Minor tweaks, moving towards general flight model integration.
1496 // Revision 1.5 1997/05/29 02:33:23 curt
1497 // Updated to reflect changing interfaces in other "modules."
1499 // Revision 1.4 1997/05/27 17:44:31 curt
1500 // Renamed & rearranged variables and routines. Added some initial simple
1501 // timer/alarm routines so the flight model can be updated on a regular
1504 // Revision 1.3 1997/05/23 15:40:25 curt
1505 // Added GNU copyright headers.
1508 // Revision 1.2 1997/05/23 00:35:12 curt
1509 // Trying to get fog to work ...
1511 // Revision 1.1 1997/05/21 15:57:51 curt
1512 // Renamed due to added GLUT support.
1514 // Revision 1.3 1997/05/19 18:22:42 curt
1515 // Parameter tweaking ... starting to stub in fog support.
1517 // Revision 1.2 1997/05/17 00:17:34 curt
1518 // Trying to stub in support for standard OpenGL.
1520 // Revision 1.1 1997/05/16 16:05:52 curt
1521 // Initial revision.