1 // radiostack.cxx -- class to manage an instance of the radio stack
3 // Written by Curtis Olson, started April 2000.
5 // Copyright (C) 2000 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 #include <simgear/compiler.h>
29 #include <simgear/math/sg_random.h>
31 #include <Aircraft/aircraft.hxx>
32 #include <Main/bfi.hxx>
33 #include <Navaids/ilslist.hxx>
34 #include <Navaids/mkrbeacons.hxx>
35 #include <Navaids/navlist.hxx>
36 #include <Time/event.hxx>
38 #include "radiostack.hxx"
40 static int nav1_play_count = 0;
41 static int nav2_play_count = 0;
42 static int adf_play_count = 0;
43 static time_t nav1_last_time = 0;
44 static time_t nav2_last_time = 0;
45 static time_t adf_last_time = 0;
48 FGRadioStack *current_radiostack;
52 * Boy, this is ugly! Make the VOR range vary by altitude difference.
54 static double kludgeRange ( double stationElev, double aircraftElev,
57 // Assume that the nominal range (usually
58 // 50nm) applies at a 5,000 ft difference.
60 double factor = ((aircraftElev*METER_TO_FEET) - stationElev) / 5000.0;
61 double range = fabs(nominalRange * factor);
63 // Clamp the range to keep it sane; for
64 // now, never less than 25% or more than
65 // 500% of nominal range.
66 if (range < nominalRange/4.0) {
67 range = nominalRange/4.0;
68 } else if (range > nominalRange*5.0) {
69 range = nominalRange*5.0;
76 // periodic radio station search wrapper
77 static void fgRadioSearch( void ) {
78 current_radiostack->search();
82 FGRadioStack::FGRadioStack() {
88 longitudeVal = fgGetValue("/position/longitude");
89 latitudeVal = fgGetValue("/position/latitude");
90 altitudeVal = fgGetValue("/position/altitude");
95 FGRadioStack::~FGRadioStack()
97 unbind(); // FIXME: should be called externally
102 FGRadioStack::init ()
109 FGPath path( globals->get_fg_root() );
111 term.append( "Navaids/range.term" );
113 low.append( "Navaids/range.low" );
115 high.append( "Navaids/range.high" );
117 term_tbl = new SGInterpTable( term.str() );
118 low_tbl = new SGInterpTable( low.str() );
119 high_tbl = new SGInterpTable( high.str() );
121 // Search radio database once per second
122 global_events.Register( "fgRadioSearch()", fgRadioSearch,
123 fgEVENT::FG_EVENT_READY, 1000);
127 FGRadioStack::bind ()
130 fgTie("/radios/nav1/frequencies/selected", this,
131 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
132 fgTie("/radios/nav1/frequencies/standby", this,
133 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
134 fgTie("/radios/nav1/radials/selected", this,
135 &FGRadioStack::get_nav1_sel_radial,
136 &FGRadioStack::set_nav1_sel_radial);
137 fgTie("/radios/nav1/volume", this,
138 &FGRadioStack::get_nav1_vol_btn,
139 &FGRadioStack::set_nav1_vol_btn);
140 fgTie("/radios/nav1/ident", this,
141 &FGRadioStack::get_nav1_ident_btn,
142 &FGRadioStack::set_nav1_ident_btn);
145 fgTie("/radios/nav1/radials/actual", this, &FGRadioStack::get_nav1_radial);
146 fgTie("/radios/nav1/to-flag", this, &FGRadioStack::get_nav1_to_flag);
147 fgTie("/radios/nav1/from-flag", this, &FGRadioStack::get_nav1_from_flag);
148 fgTie("/radios/nav1/in-range", this, &FGRadioStack::get_nav1_inrange);
149 fgTie("/radios/nav1/dme/distance", this, &FGRadioStack::get_nav1_dme_dist);
150 fgTie("/radios/nav1/dme/in-range", this,
151 &FGRadioStack::get_nav1_dme_inrange);
152 fgTie("/radios/nav1/heading-needle-deflection", this,
153 &FGRadioStack::get_nav1_heading_needle_deflection);
154 fgTie("/radios/nav1/gs-needle-deflection", this,
155 &FGRadioStack::get_nav1_gs_needle_deflection);
158 fgTie("/radios/nav2/frequencies/selected", this,
159 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
160 fgTie("/radios/nav2/frequencies/standby", this,
161 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
162 fgTie("/radios/nav2/radials/selected", this,
163 &FGRadioStack::get_nav2_sel_radial,
164 &FGRadioStack::set_nav2_sel_radial);
165 fgTie("/radios/nav2/volume", this,
166 &FGRadioStack::get_nav2_vol_btn,
167 &FGRadioStack::set_nav2_vol_btn);
168 fgTie("/radios/nav2/ident", this,
169 &FGRadioStack::get_nav2_ident_btn,
170 &FGRadioStack::set_nav2_ident_btn);
173 fgTie("/radios/nav2/radials/actual", this, &FGRadioStack::get_nav2_radial);
174 fgTie("/radios/nav2/to-flag", this, &FGRadioStack::get_nav2_to_flag);
175 fgTie("/radios/nav2/from-flag", this, &FGRadioStack::get_nav2_from_flag);
176 fgTie("/radios/nav2/in-range", this, &FGRadioStack::get_nav2_inrange);
177 fgTie("/radios/nav2/dme/distance", this, &FGRadioStack::get_nav2_dme_dist);
178 fgTie("/radios/nav2/dme/in-range", this,
179 &FGRadioStack::get_nav2_dme_inrange);
180 fgTie("/radios/nav2/heading-needle-deflection", this,
181 &FGRadioStack::get_nav2_heading_needle_deflection);
182 fgTie("/radios/nav2/gs-needle-deflection", this,
183 &FGRadioStack::get_nav2_gs_needle_deflection);
186 fgTie("/radios/adf/frequencies/selected", this,
187 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
188 fgTie("/radios/adf/frequencies/standby", this,
189 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
190 fgTie("/radios/adf/rotation", this,
191 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
192 fgTie("/radios/adf/volume", this,
193 &FGRadioStack::get_adf_vol_btn,
194 &FGRadioStack::set_adf_vol_btn);
195 fgTie("/radios/adf/ident", this,
196 &FGRadioStack::get_adf_ident_btn,
197 &FGRadioStack::set_adf_ident_btn);
201 FGRadioStack::unbind ()
203 fgUntie("/radios/nav1/frequencies/selected");
204 fgUntie("/radios/nav1/frequencies/standby");
205 fgUntie("/radios/nav1/radials/actual");
206 fgUntie("/radios/nav1/radials/selected");
207 fgUntie("/radios/nav1/on");
208 fgUntie("/radios/nav1/ident");
209 fgUntie("/radios/nav1/to-flag");
210 fgUntie("/radios/nav1/from-flag");
211 fgUntie("/radios/nav1/in-range");
212 fgUntie("/radios/nav1/dme/distance");
213 fgUntie("/radios/nav1/dme/in-range");
214 fgUntie("/radios/nav1/heading-needle-deflection");
215 fgUntie("/radios/nav1/gs-needle-deflection");
217 fgUntie("/radios/nav2/frequencies/selected");
218 fgUntie("/radios/nav2/frequencies/standby");
219 fgUntie("/radios/nav2/radials/actual");
220 fgUntie("/radios/nav2/radials/selected");
221 fgUntie("/radios/nav2/on");
222 fgUntie("/radios/nav2/ident");
223 fgUntie("/radios/nav2/to-flag");
224 fgUntie("/radios/nav2/from-flag");
225 fgUntie("/radios/nav2/in-range");
226 fgUntie("/radios/nav2/dme/distance");
227 fgUntie("/radios/nav2/dme/in-range");
228 fgUntie("/radios/nav2/heading-needle-deflection");
229 fgUntie("/radios/nav2/gs-needle-deflection");
231 fgUntie("/radios/adf/frequencies/selected");
232 fgUntie("/radios/adf/frequencies/standby");
233 fgUntie("/radios/adf/rotation");
234 fgUntie("/radios/adf/on");
235 fgUntie("/radios/adf/ident");
239 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
240 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
241 double nominalRange )
243 // extend out actual usable range to be 1.3x the published safe range
244 const double usability_factor = 1.3;
246 // assumptions we model the standard service volume, plus
247 // ... rather than specifying a cylinder, we model a cone that
248 // contains the cylinder. Then we put an upside down cone on top
249 // to model diminishing returns at too-high altitudes.
251 // altitude difference
252 double alt = ( aircraftElev * METER_TO_FEET - stationElev );
253 // cout << "aircraft elev = " << aircraftElev * METER_TO_FEET
254 // << " station elev = " << stationElev << endl;
256 if ( nominalRange < 25.0 + FG_EPSILON ) {
257 // Standard Terminal Service Volume
258 return term_tbl->interpolate( alt ) * usability_factor;
259 } else if ( nominalRange < 50.0 + FG_EPSILON ) {
260 // Standard Low Altitude Service Volume
261 // table is based on range of 40, scale to actual range
262 return low_tbl->interpolate( alt ) * nominalRange / 40.0
265 // Standard High Altitude Service Volume
266 // table is based on range of 130, scale to actual range
267 return high_tbl->interpolate( alt ) * nominalRange / 130.0
273 // model standard ILS service volumes as per AIM 1-1-9
274 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
275 double offsetDegrees, double distance )
277 // assumptions we model the standard service volume, plus
279 // altitude difference
280 // double alt = ( aircraftElev * METER_TO_FEET - stationElev );
281 double offset = fabs( offsetDegrees );
284 return FG_ILS_DEFAULT_RANGE;
285 } else if ( offset < 35 ) {
286 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
287 } else if ( offset < 45 ) {
288 return (45 - offset);
295 // Update the various nav values based on position and valid tuned in navs
297 FGRadioStack::update()
299 double lon = longitudeVal->getDoubleValue() * DEG_TO_RAD;
300 double lat = latitudeVal->getDoubleValue() * DEG_TO_RAD;
301 double elev = altitudeVal->getDoubleValue() * FEET_TO_METER;
305 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
310 station = Point3D( nav1_x, nav1_y, nav1_z );
311 nav1_loc_dist = aircraft.distance3D( station );
313 if ( nav1_has_dme ) {
314 // staightline distance
315 station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
316 nav1_dme_dist = aircraft.distance3D( station );
322 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
323 nav1_gs_dist = aircraft.distance3D( station );
329 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
330 nav1_loclat, nav1_loclon,
332 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
333 nav1_heading = az1 - nav1_magvar;
334 // cout << " heading = " << nav1_heading
335 // << " dist = " << nav1_dist << endl;
338 double offset = nav1_heading - nav1_radial;
339 while ( offset < -180.0 ) { offset += 360.0; }
340 while ( offset > 180.0 ) { offset -= 360.0; }
341 // cout << "ils offset = " << offset << endl;
342 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
343 nav1_loc_dist * METER_TO_NM );
345 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
347 // cout << "nav1 range = " << nav1_effective_range
348 // << " (" << nav1_range << ")" << endl;
350 if ( nav1_loc_dist < nav1_effective_range * NM_TO_METER ) {
352 } else if ( nav1_loc_dist < 2 * nav1_effective_range * NM_TO_METER ) {
353 nav1_inrange = sg_random() <
354 ( 2 * nav1_effective_range * NM_TO_METER - nav1_loc_dist ) /
355 (nav1_effective_range * NM_TO_METER);
357 nav1_inrange = false;
361 nav1_radial = nav1_sel_radial;
364 nav1_inrange = false;
366 // cout << "not picking up vor. :-(" << endl;
369 if ( nav1_valid && nav1_inrange ) {
370 // play station ident via audio system if on + ident,
371 // otherwise turn it off
372 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
373 FGSimpleSound *sound;
374 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
375 sound->set_volume( nav1_vol_btn * 0.3 );
376 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
377 sound->set_volume( nav1_vol_btn * 0.3 );
378 if ( nav1_last_time <
379 globals->get_time_params()->get_cur_time() - 30 ) {
380 nav1_last_time = globals->get_time_params()->get_cur_time();
383 if ( nav1_play_count < 4 ) {
385 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
386 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
389 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
391 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
392 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
393 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
398 globals->get_soundmgr()->stop( "nav1-vor-ident" );
399 globals->get_soundmgr()->stop( "nav1-dme-ident" );
404 station = Point3D( nav2_x, nav2_y, nav2_z );
405 nav2_loc_dist = aircraft.distance3D( station );
407 if ( nav2_has_dme ) {
408 // staightline distance
409 station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
410 nav2_dme_dist = aircraft.distance3D( station );
416 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
417 nav2_gs_dist = aircraft.distance3D( station );
423 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
424 nav2_loclat, nav2_loclon,
426 nav2_heading = az1 - nav2_magvar;
427 // cout << " heading = " << nav2_heading
428 // << " dist = " << nav2_dist << endl;
431 double offset = nav2_heading - nav2_radial;
432 while ( offset < -180.0 ) { offset += 360.0; }
433 while ( offset > 180.0 ) { offset -= 360.0; }
434 // cout << "ils offset = " << offset << endl;
435 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
436 nav2_loc_dist * METER_TO_NM );
438 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
440 // cout << "nav2 range = " << nav2_effective_range
441 // << " (" << nav2_range << ")" << endl;
443 if ( nav2_loc_dist < nav2_effective_range * NM_TO_METER ) {
445 } else if ( nav2_loc_dist < 2 * nav2_effective_range * NM_TO_METER ) {
446 nav2_inrange = sg_random() <
447 ( 2 * nav2_effective_range * NM_TO_METER - nav2_loc_dist ) /
448 (nav2_effective_range * NM_TO_METER);
450 nav2_inrange = false;
454 nav2_radial = nav2_sel_radial;
457 nav2_inrange = false;
459 // cout << "not picking up vor. :-(" << endl;
462 if ( nav2_valid && nav2_inrange ) {
463 // play station ident via audio system if on + ident,
464 // otherwise turn it off
465 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
466 FGSimpleSound *sound;
467 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
468 sound->set_volume( nav2_vol_btn * 0.3 );
469 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
470 sound->set_volume( nav2_vol_btn * 0.3 );
471 if ( nav2_last_time <
472 globals->get_time_params()->get_cur_time() - 30 ) {
473 nav2_last_time = globals->get_time_params()->get_cur_time();
476 if ( nav2_play_count < 4 ) {
478 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
479 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
482 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
484 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
485 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
486 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
491 globals->get_soundmgr()->stop( "nav2-vor-ident" );
492 globals->get_soundmgr()->stop( "nav2-dme-ident" );
498 // staightline distance
499 station = Point3D( adf_x, adf_y, adf_z );
500 adf_dist = aircraft.distance3D( station );
503 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
507 // cout << " heading = " << nav2_heading
508 // << " dist = " << nav2_dist << endl;
510 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
511 if ( adf_dist < adf_effective_range * NM_TO_METER ) {
513 } else if ( adf_dist < 2 * adf_effective_range * NM_TO_METER ) {
514 adf_inrange = sg_random() <
515 ( 2 * adf_effective_range * NM_TO_METER - adf_dist ) /
516 (adf_effective_range * NM_TO_METER);
524 if ( adf_valid && adf_inrange ) {
525 // play station ident via audio system if on + ident,
526 // otherwise turn it off
527 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
528 FGSimpleSound *sound;
529 sound = globals->get_soundmgr()->find( "adf-ident" );
530 sound->set_volume( adf_vol_btn * 0.3 );
532 globals->get_time_params()->get_cur_time() - 30 ) {
533 adf_last_time = globals->get_time_params()->get_cur_time();
536 if ( adf_play_count < 4 ) {
538 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
539 globals->get_soundmgr()->play_once( "adf-ident" );
544 globals->get_soundmgr()->stop( "adf-ident" );
550 // Update current nav/adf radio stations based on current postition
551 void FGRadioStack::search()
553 double lon = longitudeVal->getDoubleValue() * DEG_TO_RAD;
554 double lat = latitudeVal->getDoubleValue() * DEG_TO_RAD;
555 double elev = altitudeVal->getDoubleValue() * FEET_TO_METER;
561 static string last_nav1_ident = "";
562 static string last_nav2_ident = "";
563 static string last_adf_ident = "";
564 static bool last_nav1_vor = false;
565 static bool last_nav2_vor = false;
566 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
567 nav1_ident = ils.get_locident();
569 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
570 nav1_trans_ident = ils.get_trans_ident();
571 last_nav1_ident = nav1_ident;
572 last_nav1_vor = false;
574 nav1_has_dme = ils.get_has_dme();
575 nav1_has_gs = ils.get_has_gs();
577 nav1_loclon = ils.get_loclon();
578 nav1_loclat = ils.get_loclat();
579 nav1_gslon = ils.get_gslon();
580 nav1_gslat = ils.get_gslat();
581 nav1_dmelon = ils.get_dmelon();
582 nav1_dmelat = ils.get_dmelat();
583 nav1_elev = ils.get_gselev();
585 nav1_range = FG_ILS_DEFAULT_RANGE;
586 nav1_effective_range = nav1_range;
587 nav1_target_gs = ils.get_gsangle();
588 nav1_radial = ils.get_locheading();
589 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
590 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
591 nav1_x = ils.get_x();
592 nav1_y = ils.get_y();
593 nav1_z = ils.get_z();
594 nav1_gs_x = ils.get_gs_x();
595 nav1_gs_y = ils.get_gs_y();
596 nav1_gs_z = ils.get_gs_z();
597 nav1_dme_x = ils.get_dme_x();
598 nav1_dme_y = ils.get_dme_y();
599 nav1_dme_z = ils.get_dme_z();
601 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
602 globals->get_soundmgr()->remove( "nav1-vor-ident" );
604 FGSimpleSound *sound;
605 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
606 sound->set_volume( 0.3 );
607 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
609 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
610 globals->get_soundmgr()->remove( "nav1-dme-ident" );
612 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
613 sound->set_volume( 0.3 );
614 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
616 int offset = (int)(sg_random() * 30.0);
617 nav1_play_count = offset / 4;
618 nav1_last_time = globals->get_time_params()->get_cur_time() -
620 // cout << "offset = " << offset << " play_count = "
621 // << nav1_play_count
622 // << " nav1_last_time = " << nav1_last_time
623 // << " current time = "
624 // << globals->get_time_params()->get_cur_time() << endl;
626 // cout << "Found an ils station in range" << endl;
627 // cout << " id = " << ils.get_locident() << endl;
629 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
630 nav1_ident = nav.get_ident();
632 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
633 last_nav1_ident = nav1_ident;
634 last_nav1_vor = true;
635 nav1_trans_ident = nav.get_trans_ident();
637 nav1_has_dme = nav.get_has_dme();
639 nav1_loclon = nav.get_lon();
640 nav1_loclat = nav.get_lat();
641 nav1_elev = nav.get_elev();
642 nav1_magvar = nav.get_magvar();
643 nav1_range = nav.get_range();
644 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
645 nav1_target_gs = 0.0;
646 nav1_radial = nav1_sel_radial;
647 nav1_x = nav1_dme_x = nav.get_x();
648 nav1_y = nav1_dme_y = nav.get_y();
649 nav1_z = nav1_dme_z = nav.get_z();
651 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
652 globals->get_soundmgr()->remove( "nav1-vor-ident" );
654 FGSimpleSound *sound;
655 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
656 sound->set_volume( 0.3 );
657 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
659 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
660 globals->get_soundmgr()->remove( "nav1-dme-ident" );
662 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
663 sound->set_volume( 0.3 );
664 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
666 int offset = (int)(sg_random() * 30.0);
667 nav1_play_count = offset / 4;
668 nav1_last_time = globals->get_time_params()->get_cur_time() -
670 // cout << "offset = " << offset << " play_count = "
671 // << nav1_play_count << " nav1_last_time = "
672 // << nav1_last_time << " current time = "
673 // << globals->get_time_params()->get_cur_time() << endl;
675 // cout << "Found a vor station in range" << endl;
676 // cout << " id = " << nav.get_ident() << endl;
683 nav1_trans_ident = "";
684 last_nav1_ident = "";
685 globals->get_soundmgr()->remove( "nav1-vor-ident" );
686 globals->get_soundmgr()->remove( "nav1-dme-ident" );
687 // cout << "not picking up vor1. :-(" << endl;
690 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
691 nav2_ident = ils.get_locident();
693 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
694 last_nav2_ident = nav2_ident;
695 last_nav2_vor = false;
696 nav2_trans_ident = ils.get_trans_ident();
698 nav2_has_dme = ils.get_has_dme();
699 nav2_has_gs = ils.get_has_gs();
701 nav2_loclon = ils.get_loclon();
702 nav2_loclat = ils.get_loclat();
703 nav2_elev = ils.get_gselev();
705 nav2_range = FG_ILS_DEFAULT_RANGE;
706 nav2_effective_range = nav2_range;
707 nav2_target_gs = ils.get_gsangle();
708 nav2_radial = ils.get_locheading();
709 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
710 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
711 nav2_x = ils.get_x();
712 nav2_y = ils.get_y();
713 nav2_z = ils.get_z();
714 nav2_gs_x = ils.get_gs_x();
715 nav2_gs_y = ils.get_gs_y();
716 nav2_gs_z = ils.get_gs_z();
717 nav2_dme_x = ils.get_dme_x();
718 nav2_dme_y = ils.get_dme_y();
719 nav2_dme_z = ils.get_dme_z();
721 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
722 globals->get_soundmgr()->remove( "nav2-vor-ident" );
724 FGSimpleSound *sound;
725 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
726 sound->set_volume( 0.3 );
727 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
729 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
730 globals->get_soundmgr()->remove( "nav2-dme-ident" );
732 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
733 sound->set_volume( 0.3 );
734 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
736 int offset = (int)(sg_random() * 30.0);
737 nav2_play_count = offset / 4;
738 nav2_last_time = globals->get_time_params()->get_cur_time() -
740 // cout << "offset = " << offset << " play_count = "
741 // << nav2_play_count << " nav2_last_time = "
742 // << nav2_last_time << " current time = "
743 // << globals->get_time_params()->get_cur_time() << endl;
745 // cout << "Found an ils station in range" << endl;
746 // cout << " id = " << ils.get_locident() << endl;
748 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
749 nav2_ident = nav.get_ident();
751 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
752 last_nav2_ident = nav2_ident;
753 last_nav2_vor = true;
754 nav2_trans_ident = nav.get_trans_ident();
756 nav2_has_dme = nav.get_has_dme();
757 nav2_has_dme = false;
758 nav2_loclon = nav.get_lon();
759 nav2_loclat = nav.get_lat();
760 nav2_elev = nav.get_elev();
761 nav2_magvar = nav.get_magvar();
762 nav2_range = nav.get_range();
763 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
764 nav2_target_gs = 0.0;
765 nav2_radial = nav2_sel_radial;
766 nav2_x = nav2_dme_x = nav.get_x();
767 nav2_y = nav2_dme_y = nav.get_y();
768 nav2_z = nav2_dme_z = nav.get_z();
770 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
771 globals->get_soundmgr()->remove( "nav2-vor-ident" );
773 FGSimpleSound *sound;
774 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
775 sound->set_volume( 0.3 );
776 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
778 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
779 globals->get_soundmgr()->remove( "nav2-dme-ident" );
781 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
782 sound->set_volume( 0.3 );
783 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
785 int offset = (int)(sg_random() * 30.0);
786 nav2_play_count = offset / 4;
787 nav2_last_time = globals->get_time_params()->get_cur_time() -
789 // cout << "offset = " << offset << " play_count = "
790 // << nav2_play_count << " nav2_last_time = "
791 // << nav2_last_time << " current time = "
792 // << globals->get_time_params()->get_cur_time() << endl;
794 // cout << "Found a vor station in range" << endl;
795 // cout << " id = " << nav.get_ident() << endl;
802 nav2_trans_ident = "";
803 last_nav2_ident = "";
804 globals->get_soundmgr()->remove( "nav2-vor-ident" );
805 globals->get_soundmgr()->remove( "nav2-dme-ident" );
806 // cout << "not picking up vor1. :-(" << endl;
809 FGBeacon::fgMkrBeacType beacon_type
810 = current_beacons->query( lon * RAD_TO_DEG, lat * RAD_TO_DEG, elev );
812 outer_marker = middle_marker = inner_marker = false;
814 if ( beacon_type == FGBeacon::OUTER ) {
816 cout << "OUTER MARKER" << endl;
817 } else if ( beacon_type == FGBeacon::MIDDLE ) {
818 middle_marker = true;
819 cout << "MIDDLE MARKER" << endl;
820 } else if ( beacon_type == FGBeacon::INNER ) {
822 cout << "INNER MARKER" << endl;
826 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
828 #if defined( _MSC_VER )
829 _snprintf( freq, 10, "%.0f", adf_freq );
831 snprintf( freq, 10, "%.0f", adf_freq );
834 adf_ident += nav.get_ident();
835 // cout << "adf ident = " << adf_ident << endl;
837 if ( last_adf_ident != adf_ident ) {
838 last_adf_ident = adf_ident;
840 adf_trans_ident = nav.get_trans_ident();
841 adf_lon = nav.get_lon();
842 adf_lat = nav.get_lat();
843 adf_elev = nav.get_elev();
844 adf_range = nav.get_range();
845 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
850 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
851 globals->get_soundmgr()->remove( "adf-ident" );
853 FGSimpleSound *sound;
854 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
855 sound->set_volume( 0.3 );
856 globals->get_soundmgr()->add( sound, "adf-ident" );
858 int offset = (int)(sg_random() * 30.0);
859 adf_play_count = offset / 4;
860 adf_last_time = globals->get_time_params()->get_cur_time() -
862 // cout << "offset = " << offset << " play_count = "
863 // << adf_play_count << " adf_last_time = "
864 // << adf_last_time << " current time = "
865 // << globals->get_time_params()->get_cur_time() << endl;
867 // cout << "Found an adf station in range" << endl;
868 // cout << " id = " << nav.get_ident() << endl;
873 adf_trans_ident = "";
874 globals->get_soundmgr()->remove( "adf-ident" );
876 // cout << "not picking up adf. :-(" << endl;
881 // return the amount of heading needle deflection, returns a value
882 // clamped to the range of ( -10 , 10 )
883 double FGRadioStack::get_nav1_heading_needle_deflection() const {
886 if ( nav1_inrange ) {
887 r = nav1_heading - nav1_radial;
888 // cout << "Radial = " << nav1_radial
889 // << " Bearing = " << nav1_heading << endl;
891 while ( r > 180.0 ) { r -= 360.0;}
892 while ( r < -180.0 ) { r += 360.0;}
893 if ( fabs(r) > 90.0 ) {
894 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
900 // According to Robin Peel, the ILS is 4x more sensitive than a vor
901 if ( nav1_loc ) { r *= 4.0; }
902 if ( r < -10.0 ) { r = -10.0; }
903 if ( r > 10.0 ) { r = 10.0; }
911 // return the amount of heading needle deflection, returns a value
912 // clamped to the range of ( -10 , 10 )
913 double FGRadioStack::get_nav2_heading_needle_deflection() const {
916 if ( nav2_inrange ) {
917 r = nav2_heading - nav2_radial;
918 // cout << "Radial = " << nav2_radial
919 // << " Bearing = " << nav2_heading << endl;
921 while (r> 180.0) r-=360.0;
922 while (r<-180.0) r+=360.0;
923 if ( fabs(r) > 90.0 )
924 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
925 // According to Robin Peel, the ILS is 4x more sensitive than a vor
926 if ( nav2_loc ) r *= 4.0;
927 if ( r < -10.0 ) r = -10.0;
928 if ( r > 10.0 ) r = 10.0;
936 // return the amount of glide slope needle deflection (.i.e. the
937 // number of degrees we are off the glide slope * 5.0
938 double FGRadioStack::get_nav1_gs_needle_deflection() const {
939 if ( nav1_inrange && nav1_has_gs ) {
940 double x = nav1_gs_dist;
941 double y = (FGBFI::getAltitude() - nav1_elev) * FEET_TO_METER;
942 double angle = atan2( y, x ) * RAD_TO_DEG;
943 return (nav1_target_gs - angle) * 5.0;
950 // return the amount of glide slope needle deflection (.i.e. the
951 // number of degrees we are off the glide slope * 5.0
952 double FGRadioStack::get_nav2_gs_needle_deflection() const {
953 if ( nav2_inrange && nav2_has_gs ) {
954 double x = nav2_gs_dist;
955 double y = (FGBFI::getAltitude() - nav2_elev) * FEET_TO_METER;
956 double angle = atan2( y, x ) * RAD_TO_DEG;
957 return (nav2_target_gs - angle) * 5.0;
965 * Return true if the NAV1 TO flag should be active.
968 FGRadioStack::get_nav1_to_flag () const
971 double offset = fabs(nav1_heading - nav1_radial);
975 return (offset <= 90.0 || offset >= 270.0);
983 * Return true if the NAV1 FROM flag should be active.
986 FGRadioStack::get_nav1_from_flag () const
989 double offset = fabs(nav1_heading - nav1_radial);
993 return (offset > 90.0 && offset < 270.0);
1001 * Return true if the NAV2 TO flag should be active.
1004 FGRadioStack::get_nav2_to_flag () const
1007 double offset = fabs(nav2_heading - nav2_radial);
1011 return (offset <= 90.0 || offset >= 270.0);
1019 * Return true if the NAV2 FROM flag should be active.
1022 FGRadioStack::get_nav2_from_flag () const
1025 double offset = fabs(nav2_heading - nav2_radial);
1029 return (offset > 90.0 && offset < 270.0);