1 // main.cxx -- top level sim routines
3 // Written by Curtis Olson, started May 1997.
5 // Copyright (C) 1997 - 2002 Curtis L. Olson - curt@flightgear.org
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.
28 #if defined(__linux__) && defined(__i386__)
29 # include <fpu_control.h>
33 #include <simgear/compiler.h>
39 #include <simgear/misc/exception.hxx>
40 #include <simgear/ephemeris/ephemeris.hxx>
41 #include <simgear/route/route.hxx>
43 #ifdef SG_MATH_EXCEPTION_CLASH
55 #include <string.h> // for strcmp()
62 #ifdef HAVE_SYS_STAT_H
63 # include <sys/stat.h> // for stat()
67 # include <unistd.h> // for stat()
70 #include <plib/netChat.h>
75 #include <simgear/constants.h> // for VERSION
76 #include <simgear/debug/logstream.hxx>
77 #include <simgear/math/polar3d.hxx>
78 #include <simgear/math/sg_random.h>
79 #include <simgear/misc/sg_path.hxx>
80 #include <simgear/scene/model/location.hxx>
81 #ifdef FG_USE_CLOUDS_3D
82 # include <simgear/sky/clouds3d/SkySceneLoader.hpp>
83 # include <simgear/sky/clouds3d/SkyUtil.hpp>
85 #include <simgear/sky/sky.hxx>
86 #include <simgear/timing/sg_time.hxx>
88 #include <Include/general.hxx>
90 #include <Aircraft/aircraft.hxx>
92 #include <ATC/ATCmgr.hxx>
93 #include <ATC/ATCdisplay.hxx>
94 #include <ATC/AIMgr.hxx>
97 #include <Autopilot/newauto.hxx>
99 #include <Cockpit/hud.hxx>
100 #include <Cockpit/cockpit.hxx>
101 #include <Cockpit/radiostack.hxx>
103 #include <FDM/UIUCModel/uiuc_aircraftdir.h>
105 #include <Model/acmodel.hxx>
106 #include <Model/loader.hxx>
107 #include <Model/model.hxx>
108 #include <Model/modelmgr.hxx>
109 #include <Model/panelnode.hxx>
110 #ifdef FG_NETWORK_OLK
111 #include <NetworkOLK/network.h>
115 #include <MultiPlayer/multiplaytxmgr.hxx>
116 #include <MultiPlayer/multiplayrxmgr.hxx>
119 #include <Objects/matlib.hxx>
120 #include <Scenery/scenery.hxx>
121 #include <Scenery/tilemgr.hxx>
122 #ifdef ENABLE_AUDIO_SUPPORT
123 # include <Sound/soundmgr.hxx>
124 # include <Sound/fg_fx.hxx>
125 # include <Sound/morse.hxx>
127 #include <Systems/system_mgr.hxx>
128 #include <Instrumentation/instrument_mgr.hxx>
129 #include <Time/FGEventMgr.hxx>
130 #include <Time/fg_timer.hxx>
131 #include <Time/light.hxx>
132 #include <Time/sunpos.hxx>
133 #include <Time/tmp.hxx>
136 #include <simgear/misc/sgstream.hxx>
137 #include <simgear/math/point3d.hxx>
138 #include <FDM/flight.hxx>
139 #include <FDM/ADA.hxx>
140 #include <Scenery/tileentry.hxx>
142 #include "fg_commands.hxx"
144 #ifdef FG_EXPERIMENTAL_POINT_LIGHTING
146 typedef void (APIENTRY * PFNGLPOINTPARAMETERFEXTPROC)(GLenum pname,
148 typedef void (APIENTRY * PFNGLPOINTPARAMETERFVEXTPROC)(GLenum pname,
149 const GLfloat *params);
151 PFNGLPOINTPARAMETERFEXTPROC glPointParameterfEXT = 0;
152 PFNGLPOINTPARAMETERFVEXTPROC glPointParameterfvEXT = 0;
156 typedef void (* OpenGLFuncExt)(GLenum pname, GLfloat param);
157 typedef void (* OpenGLFuncExtv)(GLenum pname, const GLfloat *params);
159 OpenGLFuncExt glPointParameterfEXT = 0;
160 OpenGLFuncExtv glPointParameterfvEXT = 0;
164 float default_attenuation[3] = {1.0, 0.0, 0.0};
165 //Required for using GL_extensions
166 void fgLoadDCS (void);
167 void fgUpdateDCS (void);
168 ssgSelector *ship_sel=NULL;
169 // upto 32 instances of a same object can be loaded.
170 ssgTransform *ship_pos[32];
171 double obj_lat[32],obj_lon[32],obj_alt[32],obj_pitch[32],obj_roll[32];
173 ssgSelector *lightpoints_brightness = new ssgSelector;
174 ssgTransform *lightpoints_transform = new ssgTransform;
175 FGTileEntry *dummy_tile;
178 // Clip plane settings...
179 float scene_nearplane = 0.5f;
180 float scene_farplane = 120000.0f;
182 static double delta_time_sec = 0;
186 # include <WeatherCM/FGLocalWeatherDatabase.h>
188 # include <Environment/environment_mgr.hxx>
193 #include "fg_init.hxx"
195 #include "fg_props.hxx"
196 #include "globals.hxx"
197 #include "splash.hxx"
198 #include "viewmgr.hxx"
199 #include "options.hxx"
200 #include "logger.hxx"
203 # include <console.h> // -dw- for command line dialog
207 FGEventMgr global_events;
209 // This is a record containing a bit of global housekeeping information
212 // Specify our current idle function state. This is used to run all
213 // our initializations out of the glutIdleLoop() so that we can get a
214 // splash screen up and running right away.
215 static int idle_state = 0;
216 static long global_multi_loop;
218 // fog constants. I'm a little nervous about putting actual code out
219 // here but it seems to work (?)
220 static const double m_log01 = -log( 0.01 );
221 static const double sqrt_m_log01 = sqrt( m_log01 );
222 static GLfloat fog_exp_density;
223 static GLfloat fog_exp2_density;
224 static GLfloat rwy_exp2_punch_through;
225 static GLfloat taxi_exp2_punch_through;
226 static GLfloat ground_exp2_punch_through;
228 #ifdef FG_NETWORK_OLK
229 ssgSelector *fgd_sel = NULL;
230 ssgTransform *fgd_pos = NULL;
236 #ifdef FG_USE_CLOUDS_3D
237 SkySceneLoader *sgClouds3d;
238 bool _bcloud_orig = true;
242 sgMat4 copy_of_ssgOpenGLAxisSwapMatrix =
244 { 1.0f, 0.0f, 0.0f, 0.0f },
245 { 0.0f, 0.0f, -1.0f, 0.0f },
246 { 0.0f, 1.0f, 0.0f, 0.0f },
247 { 0.0f, 0.0f, 0.0f, 1.0f }
250 // The following defines flightgear options. Because glutlib will also
251 // want to parse its own options, those options must not be included here
252 // or they will get parsed by the main program option parser. Hence case
253 // is significant for any option added that might be in conflict with
256 // glutlib parses for:
258 // -direct (invalid in Win32)
262 // -indirect (invalid in Win32)
265 // Note that glutlib depends upon strings while this program's
266 // option parser wants only initial characters followed by numbers
271 ssgSimpleState *cloud3d_imposter_state;
272 ssgSimpleState *default_state;
273 ssgSimpleState *hud_and_panel;
274 ssgSimpleState *menus;
276 SGTimeStamp last_time_stamp;
277 SGTimeStamp current_time_stamp;
280 void fgBuildRenderStates( void ) {
281 default_state = new ssgSimpleState;
282 default_state->ref();
283 default_state->disable( GL_TEXTURE_2D );
284 default_state->enable( GL_CULL_FACE );
285 default_state->enable( GL_COLOR_MATERIAL );
286 default_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
287 default_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
288 default_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
289 default_state->disable( GL_BLEND );
290 default_state->disable( GL_ALPHA_TEST );
291 default_state->disable( GL_LIGHTING );
293 cloud3d_imposter_state = new ssgSimpleState;
294 cloud3d_imposter_state->ref();
295 cloud3d_imposter_state->enable( GL_TEXTURE_2D );
296 cloud3d_imposter_state->enable( GL_CULL_FACE );
297 cloud3d_imposter_state->enable( GL_COLOR_MATERIAL );
298 cloud3d_imposter_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
299 cloud3d_imposter_state->setMaterial( GL_DIFFUSE, 1, 1, 1, 1 );
300 cloud3d_imposter_state->setMaterial( GL_AMBIENT, 1, 1, 1, 1 );
301 cloud3d_imposter_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
302 cloud3d_imposter_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
303 cloud3d_imposter_state->enable( GL_BLEND );
304 cloud3d_imposter_state->enable( GL_ALPHA_TEST );
305 cloud3d_imposter_state->disable( GL_LIGHTING );
307 hud_and_panel = new ssgSimpleState;
308 hud_and_panel->ref();
309 hud_and_panel->disable( GL_CULL_FACE );
310 hud_and_panel->disable( GL_TEXTURE_2D );
311 hud_and_panel->disable( GL_LIGHTING );
312 hud_and_panel->enable( GL_BLEND );
314 menus = new ssgSimpleState;
316 menus->disable( GL_CULL_FACE );
317 menus->disable( GL_TEXTURE_2D );
318 menus->enable( GL_BLEND );
322 // fgInitVisuals() -- Initialize various GL/view parameters
323 void fgInitVisuals( void ) {
326 l = &cur_light_params;
328 #ifndef GLUT_WRONG_VERSION
329 // Go full screen if requested ...
330 if ( fgGetBool("/sim/startup/fullscreen") ) {
335 // If enabled, normal vectors specified with glNormal are scaled
336 // to unit length after transformation. Enabling this has
337 // performance implications. See the docs for glNormal.
338 // glEnable( GL_NORMALIZE );
340 glEnable( GL_LIGHTING );
341 glEnable( GL_LIGHT0 );
342 // glLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec ); // done later with ssg
345 sgSetVec3( sunpos, l->sun_vec[0], l->sun_vec[1], l->sun_vec[2] );
346 ssgGetLight( 0 ) -> setPosition( sunpos );
348 glFogi (GL_FOG_MODE, GL_EXP2);
349 if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
350 (!fgGetBool("/sim/rendering/shading"))) {
351 // if fastest fog requested, or if flat shading force fastest
352 glHint ( GL_FOG_HINT, GL_FASTEST );
353 } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
354 glHint ( GL_FOG_HINT, GL_NICEST );
356 if ( fgGetBool("/sim/rendering/wireframe") ) {
358 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
361 // This is the default anyways, but it can't hurt
362 glFrontFace ( GL_CCW );
365 // glEnable(GL_POINT_SMOOTH);
366 // glEnable(GL_LINE_SMOOTH);
367 // glEnable(GL_POLYGON_SMOOTH);
371 // For HiRes screen Dumps using Brian Pauls TR Library
372 void trRenderFrame( void ) {
374 if ( fgPanelVisible() ) {
375 GLfloat height = fgGetInt("/sim/startup/ysize");
377 (globals->get_current_panel()->getViewHeight() - globals->get_current_panel()->getYOffset())
378 * (height / 768.0) + 1;
379 glTranslatef( 0.0, view_h, 0.0 );
382 static GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
383 static GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
385 fgLIGHT *l = &cur_light_params;
387 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
388 l->adj_fog_color[2], l->adj_fog_color[3]);
390 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
392 // set the opengl state to known default values
393 default_state->force();
396 glFogf ( GL_FOG_DENSITY, fog_exp2_density);
397 glFogi ( GL_FOG_MODE, GL_EXP2 );
398 glFogfv ( GL_FOG_COLOR, l->adj_fog_color );
400 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
401 // we only update GL_AMBIENT for our lights we will never get
402 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
403 // explicitely to black.
404 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
405 glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE );
407 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
409 // texture parameters
410 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
411 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
413 // we need a white diffuse light for the phase of the moon
414 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
417 // draw the ssg scene
418 // return to the desired diffuse color
419 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
420 glEnable( GL_DEPTH_TEST );
421 ssgSetNearFar( scene_nearplane, scene_farplane );
422 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
425 glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
426 ssgSetNearFar( scene_nearplane, scene_farplane );
427 ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
429 ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
431 if (fgGetBool("/environment/clouds/status"))
432 thesky->postDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER );
434 globals->get_model_mgr()->draw();
435 globals->get_aircraft_model()->draw();
439 // Update all Visuals (redraws anything graphics related)
440 void fgRenderFrame() {
442 GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
443 GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
445 // Process/manage pending events
446 global_events.update( delta_time_sec );
448 // static const SGPropertyNode *longitude
449 // = fgGetNode("/position/longitude-deg");
450 // static const SGPropertyNode *latitude
451 // = fgGetNode("/position/latitude-deg");
452 // static const SGPropertyNode *altitude
453 // = fgGetNode("/position/altitude-ft");
454 static const SGPropertyNode *groundlevel_nearplane
455 = fgGetNode("/sim/current-view/ground-level-nearplane-m");
457 // Update the default (kludged) properties.
460 FGViewer *current__view = globals->get_current_view();
462 fgLIGHT *l = &cur_light_params;
463 static double last_visibility = -9999;
466 double actual_visibility;
467 if (fgGetBool("/environment/clouds/status"))
468 actual_visibility = thesky->get_visibility();
470 actual_visibility = fgGetDouble("/environment/visibility-m");
471 if ( actual_visibility != last_visibility ) {
472 last_visibility = actual_visibility;
474 fog_exp_density = m_log01 / actual_visibility;
475 fog_exp2_density = sqrt_m_log01 / actual_visibility;
476 ground_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
477 if ( actual_visibility < 8000 ) {
478 rwy_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 2.5);
479 taxi_exp2_punch_through = sqrt_m_log01 / (actual_visibility * 1.5);
481 rwy_exp2_punch_through = sqrt_m_log01 / ( 8000 * 2.5 );
482 taxi_exp2_punch_through = sqrt_m_log01 / ( 8000 * 1.5 );
487 // GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
488 // GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
489 // GLfloat terrain_color[4] = { 0.54, 0.44, 0.29, 1.0 };
490 // GLfloat mat_shininess[] = { 10.0 };
491 GLbitfield clear_mask;
493 if ( idle_state != 1000 ) {
494 // still initializing, draw the splash screen
495 if ( fgGetBool("/sim/startup/splash-screen") ) {
496 fgSplashUpdate(0.0, 1.0);
498 // Keep resetting sim time while the sim is initializing
499 globals->set_sim_time_sec( 0.0 );
501 // idle_state is now 1000 meaning we've finished all our
502 // initializations and are running the main loop, so this will
503 // now work without seg faulting the system.
505 // calculate our current position in cartesian space
506 globals->get_scenery()->set_center( globals->get_scenery()->get_next_center() );
509 fgReshape( fgGetInt("/sim/startup/xsize"),
510 fgGetInt("/sim/startup/ysize") );
512 if ( fgGetBool("/sim/rendering/clouds3d") ) {
513 glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
514 cloud3d_imposter_state->force();
516 glColor4f( 1.0, 1.0, 1.0, 1.0 );
517 glEnable(GL_DEPTH_TEST);
519 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
521 #ifdef FG_USE_CLOUDS_3D
522 if ( _bcloud_orig ) {
523 Point3D c = globals->get_scenery()->get_center();
524 sgClouds3d->Set_Cloud_Orig( &c );
525 _bcloud_orig = false;
527 sgClouds3d->Update( current__view->get_absolute_view_pos() );
529 glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
530 glDisable(GL_DEPTH_TEST);
533 clear_mask = GL_DEPTH_BUFFER_BIT;
534 if ( fgGetBool("/sim/rendering/wireframe") ) {
535 clear_mask |= GL_COLOR_BUFFER_BIT;
538 if ( fgGetBool("/sim/rendering/skyblend") ) {
539 if ( fgGetBool("/sim/rendering/textures") ) {
540 // glClearColor(black[0], black[1], black[2], black[3]);
541 glClearColor(l->adj_fog_color[0], l->adj_fog_color[1],
542 l->adj_fog_color[2], l->adj_fog_color[3]);
543 clear_mask |= GL_COLOR_BUFFER_BIT;
546 glClearColor(l->sky_color[0], l->sky_color[1],
547 l->sky_color[2], l->sky_color[3]);
548 clear_mask |= GL_COLOR_BUFFER_BIT;
550 glClear( clear_mask );
552 // Tell GL we are switching to model view parameters
554 // I really should create a derived ssg node or use a call
555 // back or something so that I can draw the sky within the
556 // ssgCullAndDraw() function, but for now I just mimic what
557 // ssg does to set up the model view matrix
558 glMatrixMode(GL_MODELVIEW);
560 ssgSetCamera( (sgVec4 *)current__view->get_VIEW() );
562 // set the opengl state to known default values
563 default_state->force();
565 // update fog params if visibility has changed
566 double visibility_meters = fgGetDouble("/environment/visibility-m");
567 thesky->set_visibility(visibility_meters);
569 thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
570 ( global_multi_loop * fgGetInt("/sim/speed-up") )
571 / (double)fgGetInt("/sim/model-hz") );
573 // Set correct opengl fog density
574 glFogf (GL_FOG_DENSITY, fog_exp2_density);
576 // update the sky dome
577 if ( fgGetBool("/sim/rendering/skyblend") ) {
579 SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
580 << cur_light_params.sky_color[0] << " "
581 << cur_light_params.sky_color[1] << " "
582 << cur_light_params.sky_color[2] << " "
583 << cur_light_params.sky_color[3] );
584 SG_LOG( SG_GENERAL, SG_BULK, " fog = "
585 << cur_light_params.fog_color[0] << " "
586 << cur_light_params.fog_color[1] << " "
587 << cur_light_params.fog_color[2] << " "
588 << cur_light_params.fog_color[3] );
589 SG_LOG( SG_GENERAL, SG_BULK,
590 " sun_angle = " << cur_light_params.sun_angle
591 << " moon_angle = " << cur_light_params.moon_angle );
594 // Some insane defaults.
595 static int init = 50;
596 static double sun_pos_angle = 9999.0;
597 static double sun_pos_rotation = 9999.0;
598 static float view_heading = 9999.0;
599 static float view_heading_offset = 9999.0;
601 if ((fabs(sun_pos_rotation - cur_light_params.sun_rotation) > 5e-3)
602 || (fabs(sun_pos_angle - cur_light_params.sun_angle) > 5e-3)
603 || (fabs(view_heading - current__view->getHeading_deg()) > 5e-3)
604 || (fabs(view_heading_offset
605 - current__view->getHeadingOffset_deg()) > 5e-3)
606 || init || fgGetBool("/sim/rendering/debug"))
611 sun_pos_angle = cur_light_params.sun_angle;
612 sun_pos_rotation = cur_light_params.sun_rotation;
613 view_heading = current__view->getHeading_deg ();
614 view_heading_offset = current__view->getHeadingOffset_deg();
616 thesky->repaint( cur_light_params.sky_color,
617 cur_light_params.adj_fog_color,
618 cur_light_params.sun_angle,
619 cur_light_params.moon_angle,
620 globals->get_ephem()->getNumPlanets(),
621 globals->get_ephem()->getPlanets(),
622 globals->get_ephem()->getNumStars(),
623 globals->get_ephem()->getStars() );
627 SG_LOG( SG_GENERAL, SG_BULK,
628 "thesky->reposition( view_pos = " << view_pos[0] << " "
629 << view_pos[1] << " " << view_pos[2] );
630 SG_LOG( SG_GENERAL, SG_BULK,
631 " zero_elev = " << zero_elev[0] << " "
632 << zero_elev[1] << " " << zero_elev[2]
633 << " lon = " << cur_fdm_state->get_Longitude()
634 << " lat = " << cur_fdm_state->get_Latitude() );
635 SG_LOG( SG_GENERAL, SG_BULK,
636 " sun_rot = " << cur_light_params.sun_rotation
637 << " gst = " << SGTime::cur_time_params->getGst() );
638 SG_LOG( SG_GENERAL, SG_BULK,
639 " sun ra = " << globals->get_ephem()->getSunRightAscension()
640 << " sun dec = " << globals->get_ephem()->getSunDeclination()
641 << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
642 << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
645 thesky->reposition( current__view->get_view_pos(),
646 current__view->get_zero_elev(),
647 current__view->get_world_up(),
648 current__view->getLongitude_deg()
649 * SGD_DEGREES_TO_RADIANS,
650 current__view->getLatitude_deg()
651 * SGD_DEGREES_TO_RADIANS,
652 current__view->getAltitudeASL_ft()
654 cur_light_params.sun_rotation,
655 globals->get_time_params()->getGst(),
656 globals->get_ephem()->getSunRightAscension(),
657 globals->get_ephem()->getSunDeclination(),
659 globals->get_ephem()->getMoonRightAscension(),
660 globals->get_ephem()->getMoonDeclination(),
664 glEnable( GL_DEPTH_TEST );
665 if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
667 glFogi( GL_FOG_MODE, GL_EXP2 );
668 glFogfv( GL_FOG_COLOR, l->adj_fog_color );
671 // set sun/lighting parameters
672 ssgGetLight( 0 ) -> setPosition( l->sun_vec );
674 // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
675 // we only update GL_AMBIENT for our lights we will never get
676 // a completely dark scene. So, we set GL_LIGHT_MODEL_AMBIENT
677 // explicitely to black.
678 glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
680 ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient );
681 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
682 ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular );
684 // texture parameters
685 // glEnable( GL_TEXTURE_2D );
686 glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
687 glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
689 // glMatrixMode( GL_PROJECTION );
691 ssgSetFOV( current__view->get_h_fov(),
692 current__view->get_v_fov() );
695 current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER
696 - globals->get_scenery()->get_cur_elev();
699 scene_nearplane = 10.0f;
700 scene_farplane = 120000.0f;
702 scene_nearplane = groundlevel_nearplane->getDoubleValue();
703 scene_farplane = 120000.0f;
706 ssgSetNearFar( scene_nearplane, scene_farplane );
708 // $$$ begin - added VS Renganthan 17 Oct 2K
711 // $$$ end - added VS Renganthan 17 Oct 2K
713 # ifdef FG_NETWORK_OLK
714 if ( fgGetBool("/sim/networking/network-olk") ) {
716 other = head->next; /* put listpointer to start */
717 while ( other != tail) { /* display all except myself */
718 if ( strcmp( other->ipadr, fgd_mcp_ip) != 0) {
719 other->fgd_sel->select(1);
720 sgSetCoord( &fgdpos, other->sgFGD_COORD );
721 other->fgd_pos->setTransform( &fgdpos );
726 // fgd_sel->select(1);
727 // sgCopyMat4( sgTUX, current_view.sgVIEW);
729 // sgSetCoord( &fgdpos, sgFGD_VIEW );
730 // fgd_pos->setTransform( &fgdpos);
735 // Update any multiplayer models
736 globals->get_multiplayer_rx_mgr()->Update();
739 if ( fgGetBool("/sim/rendering/skyblend") &&
740 fgGetBool("/sim/rendering/draw-otw") )
742 // draw the sky backdrop
744 // we need a white diffuse light for the phase of the moon
745 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
749 // return to the desired diffuse color
750 ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse );
753 // draw the ssg scene
754 glEnable( GL_DEPTH_TEST );
756 ssgSetNearFar( scene_nearplane, scene_farplane );
758 if ( fgGetBool("/sim/rendering/wireframe") ) {
760 glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
762 if ( fgGetBool("/sim/rendering/draw-otw") ) {
763 ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
766 // This is a bit kludgy. Every 200 frames, do an extra
767 // traversal of the scene graph without drawing anything, but
768 // with the field-of-view set to 360x360 degrees. This
769 // ensures that out-of-range random objects that are not in
770 // the current view frustum will still be freed properly.
771 static int counter = 0;
773 if (counter == 200) {
776 // No need to put the near plane too close;
777 // this way, at least the aircraft can be
779 f.setNearFar(1000, 1000000);
781 ssgGetModelviewMatrix(m);
782 globals->get_scenery()->get_scene_graph()->cull(&f, m, true);
786 // change state for lighting here
788 // draw runway lighting
789 glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
790 ssgSetNearFar( scene_nearplane, scene_farplane );
792 #ifdef FG_EXPERIMENTAL_POINT_LIGHTING
793 // Enable states for drawing points with GL_extension
794 glEnable(GL_POINT_SMOOTH);
796 if ( fgGetBool("/sim/rendering/distance-attenuation")
797 && glutExtensionSupported("GL_EXT_point_parameters") )
799 float quadratic[3] = {1.0, 0.001, 0.0000001};
800 // makes the points fade as they move away
801 glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, quadratic);
802 glPointParameterfEXT(GL_POINT_SIZE_MIN_EXT, 1.0);
806 // blending function for runway lights
807 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
810 glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
811 glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
812 glEnable(GL_TEXTURE_GEN_S);
813 glEnable(GL_TEXTURE_GEN_T);
814 glPolygonMode(GL_FRONT, GL_POINT);
816 // draw runway lighting
817 if ( fgGetBool("/sim/rendering/draw-otw") ) {
818 ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
821 // change punch through and then draw taxi lighting
822 glFogf ( GL_FOG_DENSITY, fog_exp2_density );
824 // sgSetVec3( taxi_fog, 0.0, 0.0, 0.0 );
825 // glFogfv ( GL_FOG_COLOR, taxi_fog );
826 if ( fgGetBool("/sim/rendering/draw-otw") ) {
827 ssgCullAndDraw( globals->get_scenery()->get_taxi_lights_root() );
831 glPolygonMode(GL_FRONT, GL_FILL);
832 glDisable(GL_TEXTURE_GEN_S);
833 glDisable(GL_TEXTURE_GEN_T);
835 //static int _frame_count = 0;
836 //if (_frame_count % 30 == 0) {
837 // printf("SSG: %s\n", ssgShowStats());
845 #ifdef FG_EXPERIMENTAL_POINT_LIGHTING
846 if ( fgGetBool("/sim/rendering/distance-attenuation")
847 && glutExtensionSupported("GL_EXT_point_parameters") )
849 glPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT,
850 default_attenuation);
854 glDisable(GL_POINT_SMOOTH);
857 // draw ground lighting
858 glFogf (GL_FOG_DENSITY, ground_exp2_punch_through);
859 if ( fgGetBool("/sim/rendering/draw-otw") ) {
860 ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
863 if ( fgGetBool("/sim/rendering/skyblend") ) {
864 // draw the sky cloud layers
865 if ( fgGetBool("/environment/clouds/status") &&
866 fgGetBool("/sim/rendering/draw-otw") )
868 thesky->postDraw( cur_fdm_state->get_Altitude()
869 * SG_FEET_TO_METER );
873 if ( fgGetBool("/sim/rendering/clouds3d") &&
874 fgGetBool("/sim/rendering/draw-otw") )
877 glDisable( GL_LIGHTING );
878 // cout << "drawing new clouds" << endl;
880 glEnable(GL_DEPTH_TEST);
882 glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
885 glEnable( GL_TEXTURE_2D );
886 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
887 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
888 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
889 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
892 #ifdef FG_USE_CLOUDS_3D
893 sgClouds3d->Draw((sgVec4 *)current__view->get_VIEW());
896 glEnable( GL_LIGHTING );
897 glEnable( GL_DEPTH_TEST );
898 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
901 if ( fgGetBool("/sim/rendering/draw-otw") ) {
902 globals->get_model_mgr()->draw();
903 globals->get_aircraft_model()->draw();
906 // display HUD && Panel
908 glDisable( GL_DEPTH_TEST );
909 // glDisable( GL_CULL_FACE );
910 // glDisable( GL_TEXTURE_2D );
912 // update the controls subsystem
913 globals->get_controls()->update(delta_time_sec);
915 hud_and_panel->apply();
918 // Use the hud_and_panel ssgSimpleState for rendering the ATC output
919 // This only works properly if called before the panel call
920 if((fgGetBool("/sim/ATC/enabled")) || (fgGetBool("/sim/ai-traffic/enabled")))
921 globals->get_ATC_display()->update(delta_time_sec);
923 // update the panel subsystem
924 if ( globals->get_current_panel() != NULL ) {
925 globals->get_current_panel()->update(delta_time_sec);
929 // We can do translucent menus, so why not. :-)
931 glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
933 // glDisable ( GL_BLEND ) ;
935 glEnable( GL_DEPTH_TEST );
938 // Fade out the splash screen over the first three seconds.
939 double t = globals->get_sim_time_sec();
941 fgSplashUpdate(0.0, 1.0);
942 } else if ( t <= 3.0) {
943 fgSplashUpdate(0.0, (3.0 - t) / 2.0);
951 // Update internal time dependent calculations (i.e. flight model)
952 // FIXME: this distinction is obsolete; all subsystems now get delta
954 void fgUpdateTimeDepCalcs() {
955 static bool inited = false;
957 //SG_LOG(SG_FLIGHT,SG_INFO, "Updating time dep calcs()");
959 fgLIGHT *l = &cur_light_params;
961 // Initialize the FDM here if it hasn't been and if we have a
962 // scenery elevation hit.
964 // cout << "cur_fdm_state->get_inited() = " << cur_fdm_state->get_inited()
965 // << " cur_elev = " << scenery.get_cur_elev() << endl;
967 if ( !cur_fdm_state->get_inited() &&
968 globals->get_scenery()->get_cur_elev() > -9990 )
970 SG_LOG(SG_FLIGHT,SG_INFO, "Finally initializing fdm");
971 cur_fdm_state->init();
972 if ( cur_fdm_state->get_bound() ) {
973 cur_fdm_state->unbind();
975 cur_fdm_state->bind();
979 globals->get_environment_mgr()->update(delta_time_sec);
982 // conceptually, the following block could be done for each fdm
984 if ( !cur_fdm_state->get_inited() ) {
985 // do nothing, fdm isn't inited yet
987 // we have been inited, and we are good to go ...
993 globals->get_autopilot()->update(delta_time_sec);
994 cur_fdm_state->update(delta_time_sec);
997 globals->get_model_mgr()->update(delta_time_sec);
998 globals->get_aircraft_model()->update(delta_time_sec);
1000 // update the view angle
1001 globals->get_viewmgr()->update(delta_time_sec);
1005 // Update solar system
1006 globals->get_ephem()->update( globals->get_time_params()->getMjd(),
1007 globals->get_time_params()->getLst(),
1008 cur_fdm_state->get_Latitude() );
1010 // Update radio stack model
1011 current_radiostack->update(delta_time_sec);
1015 void fgInitTimeDepCalcs( void ) {
1020 static const double alt_adjust_ft = 3.758099;
1021 static const double alt_adjust_m = alt_adjust_ft * SG_FEET_TO_METER;
1024 // What should we do when we have nothing else to do? Let's get ready
1025 // for the next move and update the display?
1026 static void fgMainLoop( void ) {
1028 static const SGPropertyNode *longitude
1029 = fgGetNode("/position/longitude-deg");
1030 static const SGPropertyNode *latitude
1031 = fgGetNode("/position/latitude-deg");
1032 static const SGPropertyNode *altitude
1033 = fgGetNode("/position/altitude-ft");
1034 static const SGPropertyNode *clock_freeze
1035 = fgGetNode("/sim/freeze/clock", true);
1036 static const SGPropertyNode *cur_time_override
1037 = fgGetNode("/sim/time/cur-time-override", true);
1039 // Update the elapsed time.
1040 static bool first_time = true;
1042 last_time_stamp.stamp();
1045 current_time_stamp.stamp();
1046 delta_time_sec = double(current_time_stamp - last_time_stamp) / 1000000.0;
1047 if (clock_freeze->getBoolValue())
1049 last_time_stamp = current_time_stamp;
1050 globals->inc_sim_time_sec( delta_time_sec );
1052 static long remainder = 0;
1054 #ifdef FANCY_FRAME_COUNTER
1058 static time_t last_time = 0;
1059 static int frames = 0;
1060 #endif // FANCY_FRAME_COUNTER
1062 SGTime *t = globals->get_time_params();
1064 sglog().setLogLevels( SG_ALL, (sgDebugPriority)fgGetInt("/sim/log-level") );
1066 FGLocation * acmodel_location = 0;
1067 if(cur_fdm_state->getACModel() != 0) {
1068 acmodel_location = (FGLocation *) cur_fdm_state->getACModel()->get3DModel()->getFGLocation();
1071 SG_LOG( SG_ALL, SG_DEBUG, "Running Main Loop");
1072 SG_LOG( SG_ALL, SG_DEBUG, "======= ==== ====");
1074 #ifdef FG_NETWORK_OLK
1075 if ( fgGetBool("/sim/networking/network-olk") ) {
1076 if ( net_is_registered == 0 ) { // We first have to reg. to fgd
1077 // printf("FGD: Netupdate\n");
1078 fgd_send_com( "A", FGFS_host); // Send Mat4 data
1079 fgd_send_com( "B", FGFS_host); // Recv Mat4 data
1084 #if defined( ENABLE_PLIB_JOYSTICK )
1085 // Read joystick and update control settings
1086 // if ( fgGetString("/sim/control-mode") == "joystick" )
1088 // fgJoystickRead();
1090 #elif defined( ENABLE_GLUT_JOYSTICK )
1091 // Glut joystick support works by feeding a joystick handler
1092 // function to glut. This is taken care of once in the joystick
1093 // init routine and we don't have to worry about it again.
1096 // Fix elevation. I'm just sticking this here for now, it should
1097 // probably move eventually
1099 /* printf("Before - ground = %.2f runway = %.2f alt = %.2f\n",
1100 scenery.get_cur_elev(),
1101 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1102 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1104 // Curt is this code used? I don't see any problems when I comment it out.
1105 if ( acmodel_location != 0 ) {
1106 if ( acmodel_location->get_cur_elev_m() > -9990 && cur_fdm_state->get_inited() ) {
1107 if ( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER <
1108 (acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0) ) {
1109 // now set aircraft altitude above ground
1110 printf("(*) Current Altitude = %.2f < %.2f forcing to %.2f\n",
1111 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
1112 acmodel_location->get_cur_elev_m() + alt_adjust_m - 3.0,
1113 acmodel_location->get_cur_elev_m() + alt_adjust_m );
1114 cur_fdm_state->set_Altitude( (acmodel_location->get_cur_elev_m()
1115 + alt_adjust_m) * SG_METER_TO_FEET );
1116 SG_LOG( SG_ALL, SG_DEBUG,
1117 "<*> resetting altitude to "
1118 << cur_fdm_state->get_Altitude() * SG_FEET_TO_METER
1123 // End of code in question. (see Curt is this code used? above)
1125 /* printf("Adjustment - ground = %.2f runway = %.2f alt = %.2f\n",
1126 scenery.get_cur_elev(),
1127 cur_fdm_state->get_Runway_altitude() * SG_FEET_TO_METER,
1128 cur_fdm_state->get_Altitude() * SG_FEET_TO_METER); */
1130 // cout << "Warp = " << globals->get_warp() << endl;
1133 static bool last_clock_freeze = false;
1135 if ( clock_freeze->getBoolValue() ) {
1136 // clock freeze requested
1137 if ( cur_time_override->getLongValue() == 0 ) {
1138 fgSetLong( "/sim/time/cur-time-override", t->get_cur_time() );
1139 globals->set_warp( 0 );
1142 // no clock freeze requested
1143 if ( last_clock_freeze == true ) {
1144 // clock just unfroze, let's set warp as the difference
1145 // between frozen time and current time so we don't get a
1146 // time jump (and corresponding sky object and lighting
1148 globals->set_warp( cur_time_override->getLongValue() - time(NULL) );
1149 fgSetLong( "/sim/time/cur-time-override", 0 );
1151 if ( globals->get_warp_delta() != 0 ) {
1152 globals->inc_warp( globals->get_warp_delta() );
1156 last_clock_freeze = clock_freeze->getBoolValue();
1158 t->update( longitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1159 latitude->getDoubleValue() * SGD_DEGREES_TO_RADIANS,
1160 cur_time_override->getLongValue(),
1161 globals->get_warp() );
1163 if ( globals->get_warp_delta() != 0 ) {
1164 fgUpdateSkyAndLightingParams();
1167 // update magvar model
1168 globals->get_mag()->update( longitude->getDoubleValue()
1169 * SGD_DEGREES_TO_RADIANS,
1170 latitude->getDoubleValue()
1171 * SGD_DEGREES_TO_RADIANS,
1172 altitude->getDoubleValue() * SG_FEET_TO_METER,
1173 globals->get_time_params()->getJD() );
1175 // Get elapsed time (in usec) for this past frame
1176 elapsed = fgGetTimeInterval();
1177 SG_LOG( SG_ALL, SG_DEBUG,
1178 "Elapsed time interval is = " << elapsed
1179 << ", previous remainder is = " << remainder );
1181 // Calculate frame rate average
1182 #ifdef FANCY_FRAME_COUNTER
1183 /* old fps calculation */
1184 if ( elapsed > 0 ) {
1187 for ( i = FG_FRAME_RATE_HISTORY - 2; i >= 0; i-- ) {
1188 tmp = general.get_frame(i);
1190 // printf("frame[%d] = %.2f\n", i, g->frames[i]);
1191 general.set_frame(i+1,tmp);
1193 tmp = 1000000.0 / (float)elapsed;
1194 general.set_frame(0,tmp);
1195 // printf("frame[0] = %.2f\n", general.frames[0]);
1197 general.set_frame_rate(accum / (float)FG_FRAME_RATE_HISTORY);
1198 // printf("ave = %.2f\n", general.frame_rate);
1201 if ( (t->get_cur_time() != last_time) && (last_time > 0) ) {
1202 general.set_frame_rate( frames );
1203 fgSetInt("/sim/frame-rate", frames);
1204 SG_LOG( SG_ALL, SG_DEBUG,
1205 "--> Frame rate is = " << general.get_frame_rate() );
1208 last_time = t->get_cur_time();
1212 // Run ATC subsystem
1213 if (fgGetBool("/sim/ATC/enabled"))
1214 globals->get_ATC_mgr()->update(delta_time_sec);
1216 // Run the AI subsystem
1217 if (fgGetBool("/sim/ai-traffic/enabled"))
1218 globals->get_AI_mgr()->update(delta_time_sec);
1222 // Calculate model iterations needed for next frame
1223 elapsed += remainder;
1225 global_multi_loop = (long)(((double)elapsed * 0.000001) *
1226 fgGetInt("/sim/model-hz"));
1227 remainder = elapsed - ( (global_multi_loop*1000000) /
1228 fgGetInt("/sim/model-hz") );
1229 SG_LOG( SG_ALL, SG_DEBUG,
1230 "Model iterations needed = " << global_multi_loop
1231 << ", new remainder = " << remainder );
1233 // chop max interations to something reasonable if the sim was
1234 // delayed for an excesive amount of time
1235 if ( global_multi_loop > 2.0 * fgGetInt("/sim/model-hz") ) {
1236 global_multi_loop = (int)(2.0 * fgGetInt("/sim/model-hz") );
1241 if ( global_multi_loop > 0 ) {
1242 fgUpdateTimeDepCalcs();
1244 SG_LOG( SG_ALL, SG_DEBUG,
1245 "Elapsed time is zero ... we're zinging" );
1248 // Do any I/O channel work that might need to be done
1249 globals->get_io()->update( delta_time_sec );
1251 // see if we need to load any deferred-load textures
1252 material_lib.load_next_deferred();
1254 // Run audio scheduler
1255 #ifdef ENABLE_AUDIO_SUPPORT
1256 if ( fgGetBool("/sim/sound/audible")
1257 && globals->get_soundmgr()->is_working() ) {
1258 globals->get_soundmgr()->update( delta_time_sec );
1262 globals->get_subsystem_mgr()->update(delta_time_sec);
1265 // Tile Manager updates - see if we need to load any new scenery tiles.
1266 // this code ties together the fdm, viewer and scenery classes...
1267 // we may want to move this to it's own class at some point
1269 double visibility_meters = fgGetDouble("/environment/visibility-m");
1270 FGViewer *current_view = globals->get_current_view();
1272 // update tile manager for FDM...
1273 // ...only if location is different than the viewer (to avoid duplicating effort)
1274 if( acmodel_location != current_view->getFGLocation() ) {
1275 if( acmodel_location != 0 ) {
1276 globals->get_tile_mgr()->prep_ssg_nodes( acmodel_location,
1277 visibility_meters );
1278 globals->get_tile_mgr()->
1279 update( acmodel_location, visibility_meters,
1280 acmodel_location->get_absolute_view_pos(globals->get_scenery()->get_center()) );
1281 // save results of update in FGLocation for fdm...
1282 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1284 set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1287 set_tile_center( globals->get_scenery()->get_next_center() );
1291 globals->get_tile_mgr()->prep_ssg_nodes( current_view->getFGLocation(),
1292 visibility_meters );
1293 // update tile manager for view...
1294 // IMPORTANT!!! the tilemgr update for view location _must_ be done last
1295 // after the FDM's until all of Flight Gear code references the viewer's location
1296 // for elevation instead of the "scenery's" current elevation.
1297 FGLocation *view_location = globals->get_current_view()->getFGLocation();
1298 globals->get_tile_mgr()->update( view_location, visibility_meters,
1299 current_view->get_absolute_view_pos() );
1300 // save results of update in FGLocation for fdm...
1301 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1302 current_view->getFGLocation()->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1304 current_view->getFGLocation()->set_tile_center( globals->get_scenery()->get_next_center() );
1306 // If fdm location is same as viewer's then we didn't do the update for fdm location
1307 // above so we need to save the viewer results in the fdm FGLocation as well...
1308 if( acmodel_location == current_view->getFGLocation() ) {
1309 if( acmodel_location != 0 ) {
1310 if ( globals->get_scenery()->get_cur_elev() > -9990 ) {
1311 acmodel_location->set_cur_elev_m( globals->get_scenery()->get_cur_elev() );
1313 acmodel_location->set_tile_center( globals->get_scenery()->get_next_center() );
1317 // END Tile Manager udpates
1322 SG_LOG( SG_ALL, SG_DEBUG, "" );
1326 // This is the top level master main function that is registered as
1327 // our idle funciton
1329 // The first few passes take care of initialization things (a couple
1330 // per pass) and once everything has been initialized fgMainLoop from
1333 static void fgIdleFunction ( void ) {
1334 // printf("idle state == %d\n", idle_state);
1336 if ( idle_state == 0 ) {
1337 // Initialize the splash screen right away
1338 if ( fgGetBool("/sim/startup/splash-screen") ) {
1343 } else if ( idle_state == 1 ) {
1344 // Initialize audio support
1345 #ifdef ENABLE_AUDIO_SUPPORT
1347 // Start the intro music
1348 if ( fgGetBool("/sim/startup/intro-music") ) {
1349 SGPath mp3file( globals->get_fg_root() );
1350 mp3file.append( "Sounds/intro.mp3" );
1352 SG_LOG( SG_GENERAL, SG_INFO,
1353 "Starting intro music: " << mp3file.str() );
1355 #if defined( __CYGWIN__ )
1356 string command = "start /m `cygpath -w " + mp3file.str() + "`";
1357 #elif defined( WIN32 )
1358 string command = "start /m " + mp3file.str();
1360 string command = "mpg123 " + mp3file.str() + "> /dev/null 2>&1";
1363 system ( command.c_str() );
1368 } else if ( idle_state == 2 ) {
1369 // These are a few miscellaneous things that aren't really
1370 // "subsystems" but still need to be initialized.
1373 if ( strstr ( general.get_glRenderer(), "Glide" ) ) {
1374 grTexLodBiasValue ( GR_TMU0, 1.0 ) ;
1379 } else if ( idle_state == 3 ) {
1380 // This is the top level init routine which calls all the
1381 // other subsystem initialization routines. If you are adding
1382 // a subsystem to flightgear, its initialization call should
1383 // located in this routine.
1384 if( !fgInitSubsystems()) {
1385 SG_LOG( SG_GENERAL, SG_ALERT,
1386 "Subsystem initializations failed ..." );
1391 } else if ( idle_state == 4 ) {
1392 // setup OpenGL view parameters
1395 // Read the list of available aircrafts
1399 } else if ( idle_state == 5 ) {
1402 } else if ( idle_state == 6 ) {
1406 SG_LOG( SG_GENERAL, SG_INFO, "Panel visible = " << fgPanelVisible() );
1407 fgReshape( fgGetInt("/sim/startup/xsize"),
1408 fgGetInt("/sim/startup/ysize") );
1411 if ( idle_state == 1000 ) {
1412 // We've finished all our initialization steps, from now on we
1413 // run the main loop.
1415 glutIdleFunc(fgMainLoop);
1417 if ( fgGetBool("/sim/startup/splash-screen") ) {
1418 fgSplashUpdate(0.0, 1.0);
1423 // options.cxx needs to see this for toggle_panel()
1424 // Handle new window size or exposure
1425 void fgReshape( int width, int height ) {
1428 if ( (!fgGetBool("/sim/virtual-cockpit"))
1429 && fgPanelVisible() && idle_state == 1000 ) {
1430 view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
1431 globals->get_current_panel()->getYOffset()) / 768.0);
1437 FGViewMgr *viewmgr = globals->get_viewmgr();
1438 for ( int i = 0; i < viewmgr->size(); ++i ) {
1439 viewmgr->get_view(i)->
1440 set_aspect_ratio((float)view_h / (float)width);
1443 glViewport( 0, (GLint)(height - view_h), (GLint)(width), (GLint)(view_h) );
1445 fgSetInt("/sim/startup/xsize", width);
1446 fgSetInt("/sim/startup/ysize", height);
1447 guiInitMouse(width, height);
1449 ssgSetFOV( viewmgr->get_current_view()->get_h_fov(),
1450 viewmgr->get_current_view()->get_v_fov() );
1454 #ifdef FG_USE_CLOUDS_3D
1455 sgClouds3d->Resize( viewmgr->get_current_view()->get_h_fov(),
1456 viewmgr->get_current_view()->get_v_fov() );
1461 // Initialize GLUT and define a main window
1462 static bool fgGlutInit( int *argc, char **argv ) {
1464 #if !defined( macintosh )
1465 // GLUT will extract all glut specific options so later on we only
1466 // need wory about our own.
1467 glutInit(argc, argv);
1470 // Define Display Parameters. Clouds3d works best with --bpp32 option
1471 if ( fgGetBool("/sim/rendering/clouds3d") ) {
1472 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_ALPHA );
1474 glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
1477 SG_LOG( SG_GENERAL, SG_INFO, "Opening a window: " <<
1478 fgGetInt("/sim/startup/xsize") << "x"
1479 << fgGetInt("/sim/startup/ysize") );
1481 // Define initial window size
1482 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1483 fgGetInt("/sim/startup/ysize") );
1485 // Initialize windows
1486 if ( !fgGetBool("/sim/startup/game-mode")) {
1487 // Open the regular window
1488 glutCreateWindow("FlightGear");
1489 #ifndef GLUT_WRONG_VERSION
1491 // Open the cool new 'game mode' window
1492 char game_mode_str[256];
1493 //#define SYNC_OPENGL_WITH_DESKTOP_SETTINGS
1494 #if defined(WIN32) && defined(SYNC_OPENGL_WITH_DESKTOP_SETTINGS)
1495 #ifndef ENUM_CURRENT_SETTINGS
1496 #define ENUM_CURRENT_SETTINGS ((DWORD)-1)
1497 #define ENUM_REGISTRY_SETTINGS ((DWORD)-2)
1501 dm.dmSize = sizeof(DEVMODE);
1502 EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dm);
1503 fgSetInt("/sim/startup/xsize", dm.dmPelsWidth);
1504 fgSetInt("/sim/startup/ysize", dm.dmPelsHeight);
1505 glutInitWindowSize( fgGetInt("/sim/startup/xsize"),
1506 fgGetInt("/sim/startup/ysize") );
1507 sprintf( game_mode_str, "%dx%d:%d@%d",
1511 dm.dmDisplayFrequency );
1513 // Open the cool new 'game mode' window
1514 sprintf( game_mode_str, "width=%d height=%d bpp=%d",
1515 fgGetInt("/sim/startup/xsize"),
1516 fgGetInt("/sim/startup/ysize"),
1517 fgGetInt("/sim/rendering/bits-per-pixel"));
1519 #endif // HAVE_WINDOWS_H
1520 SG_LOG( SG_GENERAL, SG_INFO,
1521 "game mode params = " << game_mode_str );
1522 glutGameModeString( game_mode_str );
1523 glutEnterGameMode();
1524 #endif // GLUT_WRONG_VERSION
1527 // This seems to be the absolute earliest in the init sequence
1528 // that these calls will return valid info. Too bad it's after
1529 // we've already created and sized out window. :-(
1530 general.set_glVendor( (char *)glGetString ( GL_VENDOR ) );
1531 general.set_glRenderer( (char *)glGetString ( GL_RENDERER ) );
1532 general.set_glVersion( (char *)glGetString ( GL_VERSION ) );
1533 SG_LOG( SG_GENERAL, SG_INFO, general.get_glRenderer() );
1536 glGetIntegerv( GL_MAX_TEXTURE_SIZE, &tmp );
1537 general.set_glMaxTexSize( tmp );
1538 SG_LOG ( SG_GENERAL, SG_INFO, "Max texture size = " << tmp );
1540 glGetIntegerv( GL_DEPTH_BITS, &tmp );
1541 general.set_glDepthBits( tmp );
1542 SG_LOG ( SG_GENERAL, SG_INFO, "Depth buffer bits = " << tmp );
1548 // Initialize GLUT event handlers
1549 static bool fgGlutInitEvents( void ) {
1550 // call fgReshape() on window resizes
1551 glutReshapeFunc( fgReshape );
1553 // keyboard and mouse callbacks are set in FGInput::init
1555 // call fgMainLoop() whenever there is
1556 // nothing else to do
1557 glutIdleFunc( fgIdleFunction );
1560 glutDisplayFunc( fgRenderFrame );
1565 // Main top level initialization
1566 static bool fgMainInit( int argc, char **argv ) {
1568 #if defined( macintosh )
1569 freopen ("stdout.txt", "w", stdout );
1570 freopen ("stderr.txt", "w", stderr );
1571 argc = ccommand( &argv );
1574 // set default log levels
1575 sglog().setLogLevels( SG_ALL, SG_INFO );
1578 #ifdef FLIGHTGEAR_VERSION
1579 version = FLIGHTGEAR_VERSION;
1581 version = "unknown version";
1583 SG_LOG( SG_GENERAL, SG_INFO, "FlightGear: Version "
1585 SG_LOG( SG_GENERAL, SG_INFO, "Built with " << SG_COMPILER_STR << endl );
1587 // Allocate global data structures. This needs to happen before
1588 // we parse command line options
1590 globals = new FGGlobals;
1592 #ifndef FG_WEATHERCM
1593 globals->set_environment_mgr(new FGEnvironmentMgr);
1596 // seed the random number generater
1599 SGRoute *route = new SGRoute;
1600 globals->set_route( route );
1602 FGControls *controls = new FGControls;
1603 globals->set_controls( controls );
1605 string_list *col = new string_list;
1606 globals->set_channel_options_list( col );
1608 // Scan the config file(s) and command line options to see if
1609 // fg_root was specified (ignore all other options for now)
1610 fgInitFGRoot(argc, argv);
1612 // Check for the correct base package version
1613 static char required_version[] = "0.9.1";
1614 string base_version = fgBasePackageVersion();
1615 if ( !(base_version == required_version) ) {
1616 // tell the operator how to use this application
1618 cerr << endl << "Base package check failed ... " \
1619 << "Found version " << base_version << " at: " \
1620 << globals->get_fg_root() << endl;
1621 cerr << "Please upgrade to version: " << required_version << endl;
1625 // Initialize the Aircraft directory to "" (UIUC)
1628 // Load the configuration parameters. (Command line options
1629 // overrides config file options. Config file options override
1631 if ( !fgInitConfig(argc, argv) ) {
1632 SG_LOG( SG_GENERAL, SG_ALERT, "Config option parsing failed ..." );
1636 // Initialize the Window/Graphics environment.
1637 if( !fgGlutInit(&argc, argv) ) {
1638 SG_LOG( SG_GENERAL, SG_ALERT, "GLUT initialization failed ..." );
1642 // Initialize the various GLUT Event Handlers.
1643 if( !fgGlutInitEvents() ) {
1644 SG_LOG( SG_GENERAL, SG_ALERT,
1645 "GLUT event handler initialization failed ..." );
1649 // Initialize plib net interface
1650 netInit( &argc, argv );
1652 // Initialize ssg (from plib). Needs to come before we do any
1653 // other ssg stuff, but after opengl/glut has been initialized.
1656 // Initialize the user interface (we need to do this before
1657 // passing off control to glut and before fgInitGeneral to get our
1661 // Read the list of available aircrafts
1664 #ifdef GL_EXT_texture_lod_bias
1665 glTexEnvf( GL_TEXTURE_FILTER_CONTROL_EXT, GL_TEXTURE_LOD_BIAS_EXT, -0.5 ) ;
1668 #ifdef FG_EXPERIMENTAL_POINT_LIGHTING
1669 // get the address of our OpenGL extensions
1670 if ( fgGetBool("/sim/rendering/distance-attenuation") )
1673 glPointParameterfEXT = (PFNGLPOINTPARAMETERFEXTPROC)
1674 wglGetProcAddress("glPointParameterfEXT");
1675 glPointParameterfvEXT = (PFNGLPOINTPARAMETERFVEXTPROC)
1676 wglGetProcAddress("glPointParameterfvEXT");
1678 glPointParameterfEXT = (OpenGLFuncExt)
1679 glXGetProcAddressARB((GLubyte *)"glPointParameterfEXT");
1680 glPointParameterfvEXT = (OpenGLFuncExtv)
1681 glXGetProcAddressARB((GLubyte *)"glPointParameterfvEXT");
1686 // based on the requested presets, calculate the true starting
1691 SGTime *t = fgInitTime();
1692 globals->set_time_params( t );
1694 // Do some quick general initializations
1695 if( !fgInitGeneral()) {
1696 SG_LOG( SG_GENERAL, SG_ALERT,
1697 "General initializations failed ..." );
1701 SGPath modelpath( globals->get_fg_root() );
1702 ssgModelPath( (char *)modelpath.c_str() );
1704 // Initialize the global scenery manager
1705 globals->set_scenery( new FGScenery );
1706 globals->get_scenery()->init();
1707 globals->get_scenery()->bind();
1709 // Initialize the global tile manager
1710 globals->set_tile_mgr( new FGTileMgr );
1712 ////////////////////////////////////////////////////////////////////
1713 // Initialize the property-based built-in commands
1714 ////////////////////////////////////////////////////////////////////
1717 ////////////////////////////////////////////////////////////////////
1718 // Initialize the general model subsystem.
1719 ////////////////////////////////////////////////////////////////////
1721 globals->set_model_loader(new FGModelLoader);
1722 globals->set_texture_loader(new FGTextureLoader);
1723 globals->set_model_mgr(new FGModelMgr);
1724 globals->get_model_mgr()->init();
1725 globals->get_model_mgr()->bind();
1727 ////////////////////////////////////////////////////////////////////
1728 // Initialize the 3D aircraft model subsystem.
1729 ////////////////////////////////////////////////////////////////////
1731 globals->set_aircraft_model(new FGAircraftModel);
1732 globals->get_aircraft_model()->init();
1733 globals->get_aircraft_model()->bind();
1735 ////////////////////////////////////////////////////////////////////
1736 // Initialize the view manager subsystem.
1737 ////////////////////////////////////////////////////////////////////
1739 FGViewMgr *viewmgr = new FGViewMgr;
1740 globals->set_viewmgr( viewmgr );
1745 // Initialize the sky
1746 SGPath ephem_data_path( globals->get_fg_root() );
1747 ephem_data_path.append( "Astro" );
1748 SGEphemeris *ephem = new SGEphemeris( ephem_data_path.c_str() );
1749 ephem->update( globals->get_time_params()->getMjd(),
1750 globals->get_time_params()->getLst(),
1752 globals->set_ephem( ephem );
1754 // TODO: move to environment mgr
1756 SGPath texture_path(globals->get_fg_root());
1757 texture_path.append("Textures");
1758 texture_path.append("Sky");
1759 for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
1760 SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
1761 thesky->add_cloud_layer(layer);
1765 SGPath sky_tex_path( globals->get_fg_root() );
1766 sky_tex_path.append( "Textures" );
1767 sky_tex_path.append( "Sky" );
1768 thesky->texture_path( sky_tex_path.str() );
1770 thesky->build( 550.0, 550.0,
1771 globals->get_ephem()->getNumPlanets(),
1772 globals->get_ephem()->getPlanets(), 60000.0,
1773 globals->get_ephem()->getNumStars(),
1774 globals->get_ephem()->getStars(), 60000.0 );
1776 // Initialize MagVar model
1777 SGMagVar *magvar = new SGMagVar();
1778 globals->set_mag( magvar );
1780 // airport = new ssgBranch;
1781 // airport->setName( "Airport Lighting" );
1782 // lighting->addKid( airport );
1788 #ifdef FG_NETWORK_OLK
1789 // Do the network intialization
1790 if ( fgGetBool("/sim/networking/network-olk") ) {
1791 printf("Multipilot mode %s\n",
1792 fg_net_init( globals->get_scenery()->get_scene_graph() ) );
1796 // build our custom render states
1797 fgBuildRenderStates();
1799 // pass control off to the master GLUT event handler
1802 // we never actually get here ... but to avoid compiler warnings,
1808 // $$$ end - added VS Renganathan, 15 Oct 2K
1809 // - added Venky , 12 Nov 2K
1811 #if defined(__linux__) && defined(__i386__)
1813 static void handleFPE (int);
1818 fpu_control_t fpe_flags = 0;
1819 _FPU_GETCW(fpe_flags);
1820 // fpe_flags &= ~_FPU_MASK_IM; // invalid operation
1821 // fpe_flags &= ~_FPU_MASK_DM; // denormalized operand
1822 // fpe_flags &= ~_FPU_MASK_ZM; // zero-divide
1823 // fpe_flags &= ~_FPU_MASK_OM; // overflow
1824 // fpe_flags &= ~_FPU_MASK_UM; // underflow
1825 // fpe_flags &= ~_FPU_MASK_PM; // precision (inexact result)
1826 _FPU_SETCW(fpe_flags);
1827 signal(SIGFPE, handleFPE);
1834 SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
1847 short CPSGetCurrentProcess(PSN *psn);
1848 short CPSSetProcessName (PSN *psn, char *processname);
1849 short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
1850 short CPSSetFrontProcess(PSN *psn);
1853 #define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
1857 // Main entry point; catch any exceptions that have made it this far.
1858 int main ( int argc, char **argv ) {
1860 // Enable floating-point exceptions for Linux/x86
1861 #if defined(__linux__) && defined(__i386__)
1865 // Enable floating-point exceptions for Windows
1866 #if defined( _MSC_VER ) && defined( DEBUG )
1867 // Christian, we should document what this does
1868 _control87( _EM_INEXACT, _MCW_EM );
1871 #if defined( HAVE_BC5PLUS )
1872 _control87(MCW_EM, MCW_EM); /* defined in float.h */
1875 // Keyboard focus hack
1880 glutInit (&argc, argv);
1882 CPSGetCurrentProcess(&psn);
1883 CPSSetProcessName(&psn, "FlightGear");
1885 CPSSetFrontProcess(&psn);
1889 // FIXME: add other, more specific
1892 fgMainInit(argc, argv);
1893 } catch (sg_throwable &t) {
1894 // We must use cerr rather than
1895 // logging, since logging may be
1897 cerr << "Fatal error: " << t.getFormattedMessage()
1898 << "\n (received from " << t.getOrigin() << ')' << endl;
1906 void fgLoadDCS(void) {
1908 ssgEntity *ship_obj = NULL;
1910 char obj_filename[25];
1912 for ( int k = 0; k < 32; k++ ) {
1916 SGPath tile_path( globals->get_fg_root());
1917 tile_path.append( "Scenery" );
1918 tile_path.append( "Objects.txt" );
1919 sg_gzifstream in( tile_path.str() );
1920 if ( ! in.is_open() ) {
1921 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << tile_path.str() );
1924 SGPath modelpath( globals->get_fg_root() );
1925 modelpath.append( "Models" );
1926 modelpath.append( "Geometry" );
1928 SGPath texturepath( globals->get_fg_root() );
1929 texturepath.append( "Models" );
1930 texturepath.append( "Textures" );
1932 ssgModelPath( (char *)modelpath.c_str() );
1933 ssgTexturePath( (char *)texturepath.c_str() );
1935 ship_sel = new ssgSelector;
1938 while ( ! in.eof() ) {
1940 if ( in.get( c ) && c == '#' ) {
1944 in >> obj_filename >> obj_lat[objc] >> obj_lon[objc] >> obj_alt[objc];
1945 /* cout << endl << obj_filename << " " << obj_lat[objc] << " " << obj_lon[objc] << " " << obj_alt[objc] << endl;
1946 int chj=getchar();*/
1948 obj_lon[objc] *=SGD_DEGREES_TO_RADIANS;
1949 obj_lat[objc] *=SGD_DEGREES_TO_RADIANS;
1951 ship_pos[objc] = new ssgTransform;
1953 // type "repeat" in objects.txt to load one more
1954 // instance of the last object.
1956 if ( strcmp(obj_filename,"repeat") != 0) {
1958 globals->get_model_loader()->load_model( globals->get_fg_root(), obj_filename, globals->get_props(), globals->get_sim_time_sec() );
1961 if ( ship_obj != NULL ) {
1962 ship_obj->setName(obj_filename);
1964 ship_obj->clrTraversalMaskBits( SSGTRAV_HOT );
1966 ship_obj->setTraversalMaskBits( SSGTRAV_HOT );
1967 ship_pos[objc]->addKid( ship_obj ); // add object to transform node
1968 ship_sel->addKid( ship_pos[objc] ); // add transform node to selector
1969 SG_LOG( SG_TERRAIN, SG_ALERT, "Loaded file: "
1972 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: "
1976 // temporary hack for deck lights - ultimately should move to PLib (when??)
1977 //const char *extn = file_extension ( obj_filename ) ;
1979 // ssgVertexArray *lights = new ssgVertexArray( 100 );
1980 ssgVertexArray *lightpoints = new ssgVertexArray( 100 );
1981 ssgVertexArray *lightnormals = new ssgVertexArray( 100 );
1982 ssgVertexArray *lightdir = new ssgVertexArray( 100 );
1983 int ltype[500], light_type = 0;
1984 static int ltcount = 0;
1986 sgVec3 rway_dir,rway_normal,lightpt;
1988 modelpath.append(obj_filename);
1989 sg_gzifstream in1( modelpath.str() );
1990 if ( ! in1.is_open() ) {
1991 SG_LOG( SG_TERRAIN, SG_ALERT, "Cannot open file: " << modelpath.str() );
1993 while ( ! in1.eof() ) {
1995 if ( in1.get( c ) && c == '#' ) {
2000 //cout << token << endl;
2001 if ( token == "runway" ) {
2003 sgSetVec3 (rway_dir, node[0], node[1], node[2] );
2004 } else if ( token == "edgelight" ) {
2006 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2008 } else if ( token == "taxi" ) {
2010 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2012 } else if ( token == "vasi" ) {
2014 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2016 } else if ( token == "threshold" ) {
2018 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2020 } else if ( token == "rabbit" ) {
2022 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2024 } else if ( token == "ols" ) {
2026 sgSetVec3 (rway_ols, node[0], node[1], node[2] );
2028 } else if ( token == "red" ) {
2030 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2032 } else if ( token == "green" ) {
2034 sgSetVec3 (rway_normal, node[0], node[1], node[2] );
2036 } else if ( token == "lp" ) {
2038 sgSetVec3 (lightpt, node[0], node[1], node[2] );
2039 lightpoints->add( lightpt );
2040 lightnormals->add( rway_normal );
2041 lightdir->add( rway_dir );
2042 ltype[ltcount]= light_type;
2045 if (in1.eof()) break;
2049 if ( lightpoints->getNum() ) {
2050 ssgBranch *lightpoints_branch;
2051 long int dummy = -999;
2052 dummy_tile = new FGTileEntry((SGBucket)dummy);
2053 dummy_tile->lightmaps_sequence = new ssgSelector;
2054 dummy_tile->ols_transform = new ssgTransform;
2056 // call function to generate the runway lights
2057 lightpoints_branch =
2058 dummy_tile->gen_runway_lights( lightpoints, lightnormals,
2060 lightpoints_brightness->addKid(lightpoints_branch);
2061 lightpoints_transform->addKid(lightpoints_brightness);
2062 //dummy_tile->lightmaps_sequence->setTraversalMaskBits( SSGTRAV_HOT );
2063 lightpoints_transform->addKid( dummy_tile->lightmaps_sequence );
2064 lightpoints_transform->ref();
2065 globals->get_scenery()->get_gnd_lights_root()->addKid( lightpoints_transform );
2069 // end hack for deck lights
2073 if (in.eof()) break;
2077 SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." );
2079 globals->get_scenery()->get_terrain_branch()->addKid( ship_sel ); //add selector node to root node
2086 void fgUpdateDCS (void) {
2088 // double eye_lat,eye_lon,eye_alt;
2089 // static double obj_head;
2090 double sl_radius,obj_latgc;
2091 // float nresultmat[4][4];
2092 // sgMat4 Trans,rothead,rotlon,rot180,rotlat,resultmat1,resultmat2,resultmat3;
2095 // Instantaneous Geodetic Lat/Lon/Alt of moving object
2096 FGADA *fdm = (FGADA *)current_aircraft.fdm_state;
2098 // Deck should be the first object in objects.txt in case of fdm=ada
2100 if (!strcmp(fgGetString("/sim/flight-model"), "ada")) {
2101 if ((fdm->get_iaux(1))==1)
2103 obj_lat[1] = fdm->get_daux(1)*SGD_DEGREES_TO_RADIANS;
2104 obj_lon[1] = fdm->get_daux(2)*SGD_DEGREES_TO_RADIANS;
2105 obj_alt[1] = fdm->get_daux(3);
2106 obj_pitch[1] = fdm->get_faux(1);
2107 obj_roll[1] = fdm->get_faux(2);
2111 for ( int m = 0; m < objc; m++ ) {
2112 //cout << endl << obj_lat[m]*SGD_RADIANS_TO_DEGREES << " " << obj_lon[m]*SGD_RADIANS_TO_DEGREES << " " << obj_alt[m] << " " << objc << endl;
2115 //Geodetic to Geocentric angles for rotation
2116 sgGeodToGeoc(obj_lat[m],obj_alt[m],&sl_radius,&obj_latgc);
2118 //moving object gbs-posn in cartesian coords
2119 Point3D obj_posn = Point3D( obj_lon[m],obj_lat[m],obj_alt[m]);
2120 Point3D obj_pos = sgGeodToCart( obj_posn );
2122 // Translate moving object w.r.t eye
2123 Point3D Objtrans = obj_pos - globals->get_scenery()->get_center();
2128 // rotate dynamic objects for lat,lon & alt and other motion about its axes
2131 sgMakeTransMat4( sgTRANS, bz[0],bz[1],bz[2]);
2133 sgVec3 ship_fwd,ship_rt,ship_up;
2134 sgSetVec3( ship_fwd, 1.0, 0.0, 0.0);//east,roll
2135 sgSetVec3( ship_rt, 0.0, 1.0, 0.0);//up,pitch
2136 sgSetVec3( ship_up, 0.0, 0.0, 1.0); //north,yaw
2138 sgMat4 sgROT_lon, sgROT_lat, sgROT_hdg, sgROT_pitch, sgROT_roll;
2139 sgMakeRotMat4( sgROT_lon, obj_lon[m]*SGD_RADIANS_TO_DEGREES, ship_up );
2140 sgMakeRotMat4( sgROT_lat, 90-obj_latgc*SGD_RADIANS_TO_DEGREES, ship_rt );
2141 sgMakeRotMat4( sgROT_hdg, 180.0, ship_up );
2142 sgMakeRotMat4( sgROT_pitch, obj_pitch[m], ship_rt );
2143 sgMakeRotMat4( sgROT_roll, obj_roll[m], ship_fwd );
2146 sgCopyMat4( sgTUX, sgROT_hdg );
2147 sgPostMultMat4( sgTUX, sgROT_pitch );
2148 sgPostMultMat4( sgTUX, sgROT_roll );
2149 sgPostMultMat4( sgTUX, sgROT_lat );
2150 sgPostMultMat4( sgTUX, sgROT_lon );
2151 sgPostMultMat4( sgTUX, sgTRANS );
2154 sgSetCoord(&shippos, sgTUX );
2155 ship_pos[m]->setTransform( &shippos );
2156 // temporary hack for deck lights - ultimately should move to PLib (when ??)
2158 if (lightpoints_transform) {
2159 lightpoints_transform->setTransform( &shippos );
2160 float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
2161 if ( sun_angle > 89 ) {
2162 lightpoints_brightness->select(0x01);
2164 lightpoints_brightness->select(0x00);
2173 sgXformPnt3( rp, rway_ols, sgTUX );
2174 vp = globals->get_current_view()->get_view_pos();
2175 to[0] = rp[0]-vp[0];
2176 to[1] = rp[1]-vp[1];
2177 to[2] = rp[2]-vp[2];
2178 float dist = sgLengthVec3( to );
2179 alt = (current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER)-rway_ols[2];
2181 elev = asin(alt/dist)*SGD_RADIANS_TO_DEGREES;
2183 ref_elev = elev - 3.75; // +ve above, -ve below
2187 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2188 // if (ref_elev > 0.51) sel = 0x21;
2189 // if ((ref_elev <= 0.51) & (ref_elev > 0.17)) sel = 0x22;
2190 // if ((ref_elev <= 0.17) & (ref_elev >= -0.17)) sel = 0x24;
2191 // if ((ref_elev < -0.17) & (ref_elev >= -0.51)) sel = 0x28;
2192 // if (ref_elev < -0.51) sel = 0x30;
2193 // DO NOT DELETE THIS CODE - This is to compare a discrete FLOLS (without LOD) with analog FLOLS
2194 dummy_tile->lightmaps_sequence->select(sel);
2197 sgCopyVec3 (up, ship_up);
2199 sgScaleVec3 (up, 4.0*ref_elev*dist/750.0);
2201 sgScaleVec3 (up, 4.0*ref_elev);
2202 dummy_tile->ols_transform->setTransform(up);
2203 //cout << "ref_elev " << ref_elev << endl;
2205 // end hack for deck lights
2208 if ( ship_sel != NULL ) {
2209 ship_sel->select(0xFFFFFFFE); // first object is ownship, added to acmodel
2213 // $$$ end - added VS Renganathan, 15 Oct 2K
2214 // added Venky , 12 Nov 2K