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.
24 #include <simgear/math/sg_random.h>
26 #include <Aircraft/aircraft.hxx>
27 #include <Main/bfi.hxx>
28 #include <Navaids/ilslist.hxx>
29 #include <Navaids/mkrbeacons.hxx>
30 #include <Navaids/navlist.hxx>
31 #include <Time/event.hxx>
33 #include "radiostack.hxx"
35 static int nav1_play_count = 0;
36 static int nav2_play_count = 0;
37 static int adf_play_count = 0;
38 static time_t nav1_last_time = 0;
39 static time_t nav2_last_time = 0;
40 static time_t adf_last_time = 0;
43 FGRadioStack *current_radiostack;
47 * Boy, this is ugly! Make the VOR range vary by altitude difference.
49 static double kludgeRange ( double stationElev, double aircraftElev,
52 // Assume that the nominal range (usually
53 // 50nm) applies at a 5,000 ft difference.
55 double factor = ((aircraftElev*METER_TO_FEET) - stationElev) / 5000.0;
56 double range = fabs(nominalRange * factor);
58 // Clamp the range to keep it sane; for
59 // now, never less than 25% or more than
60 // 500% of nominal range.
61 if (range < nominalRange/4.0) {
62 range = nominalRange/4.0;
63 } else if (range > nominalRange*5.0) {
64 range = nominalRange*5.0;
71 // periodic radio station search wrapper
72 static void fgRadioSearch( void ) {
73 current_radiostack->search();
77 FGRadioStack::FGRadioStack() {
83 longitudeVal = fgGetValue("/position/longitude");
84 latitudeVal = fgGetValue("/position/latitude");
85 altitudeVal = fgGetValue("/position/altitude");
90 FGRadioStack::~FGRadioStack()
92 unbind(); // FIXME: should be called externally
104 FGPath path( globals->get_fg_root() );
106 term.append( "Navaids/range.term" );
108 low.append( "Navaids/range.low" );
110 high.append( "Navaids/range.high" );
112 term_tbl = new SGInterpTable( term.str() );
113 low_tbl = new SGInterpTable( low.str() );
114 high_tbl = new SGInterpTable( high.str() );
116 // Search radio database once per second
117 global_events.Register( "fgRadioSearch()", fgRadioSearch,
118 fgEVENT::FG_EVENT_READY, 1000);
122 FGRadioStack::bind ()
125 fgTie("/radios/nav1/frequencies/selected", this,
126 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
127 fgTie("/radios/nav1/frequencies/standby", this,
128 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
129 fgTie("/radios/nav1/radials/selected", this,
130 &FGRadioStack::get_nav1_sel_radial,
131 &FGRadioStack::set_nav1_sel_radial);
132 fgTie("/radios/nav1/volume", this,
133 &FGRadioStack::get_nav1_vol_btn,
134 &FGRadioStack::set_nav1_vol_btn);
135 fgTie("/radios/nav1/ident", this,
136 &FGRadioStack::get_nav1_ident_btn,
137 &FGRadioStack::set_nav1_ident_btn);
140 fgTie("/radios/nav1/radials/actual", this, &FGRadioStack::get_nav1_radial);
141 fgTie("/radios/nav1/to-flag", this, &FGRadioStack::get_nav1_to_flag);
142 fgTie("/radios/nav1/from-flag", this, &FGRadioStack::get_nav1_from_flag);
143 fgTie("/radios/nav1/in-range", this, &FGRadioStack::get_nav1_inrange);
144 fgTie("/radios/nav1/dme/distance", this, &FGRadioStack::get_nav1_dme_dist);
145 fgTie("/radios/nav1/dme/in-range", this,
146 &FGRadioStack::get_nav1_dme_inrange);
147 fgTie("/radios/nav1/heading-needle-deflection", this,
148 &FGRadioStack::get_nav1_heading_needle_deflection);
149 fgTie("/radios/nav1/gs-needle-deflection", this,
150 &FGRadioStack::get_nav1_gs_needle_deflection);
153 fgTie("/radios/nav2/frequencies/selected", this,
154 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
155 fgTie("/radios/nav2/frequencies/standby", this,
156 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
157 fgTie("/radios/nav2/radials/selected", this,
158 &FGRadioStack::get_nav2_sel_radial,
159 &FGRadioStack::set_nav2_sel_radial);
160 fgTie("/radios/nav2/volume", this,
161 &FGRadioStack::get_nav2_vol_btn,
162 &FGRadioStack::set_nav2_vol_btn);
163 fgTie("/radios/nav2/ident", this,
164 &FGRadioStack::get_nav2_ident_btn,
165 &FGRadioStack::set_nav2_ident_btn);
168 fgTie("/radios/nav2/radials/actual", this, &FGRadioStack::get_nav2_radial);
169 fgTie("/radios/nav2/to-flag", this, &FGRadioStack::get_nav2_to_flag);
170 fgTie("/radios/nav2/from-flag", this, &FGRadioStack::get_nav2_from_flag);
171 fgTie("/radios/nav2/in-range", this, &FGRadioStack::get_nav2_inrange);
172 fgTie("/radios/nav2/dme/distance", this, &FGRadioStack::get_nav2_dme_dist);
173 fgTie("/radios/nav2/dme/in-range", this,
174 &FGRadioStack::get_nav2_dme_inrange);
175 fgTie("/radios/nav2/heading-needle-deflection", this,
176 &FGRadioStack::get_nav2_heading_needle_deflection);
177 fgTie("/radios/nav2/gs-needle-deflection", this,
178 &FGRadioStack::get_nav2_gs_needle_deflection);
181 fgTie("/radios/adf/frequencies/selected", this,
182 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
183 fgTie("/radios/adf/frequencies/standby", this,
184 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
185 fgTie("/radios/adf/rotation", this,
186 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
187 fgTie("/radios/adf/volume", this,
188 &FGRadioStack::get_adf_vol_btn,
189 &FGRadioStack::set_adf_vol_btn);
190 fgTie("/radios/adf/ident", this,
191 &FGRadioStack::get_adf_ident_btn,
192 &FGRadioStack::set_adf_ident_btn);
196 FGRadioStack::unbind ()
198 fgUntie("/radios/nav1/frequencies/selected");
199 fgUntie("/radios/nav1/frequencies/standby");
200 fgUntie("/radios/nav1/radials/actual");
201 fgUntie("/radios/nav1/radials/selected");
202 fgUntie("/radios/nav1/on");
203 fgUntie("/radios/nav1/ident");
204 fgUntie("/radios/nav1/to-flag");
205 fgUntie("/radios/nav1/from-flag");
206 fgUntie("/radios/nav1/in-range");
207 fgUntie("/radios/nav1/dme/distance");
208 fgUntie("/radios/nav1/dme/in-range");
209 fgUntie("/radios/nav1/heading-needle-deflection");
210 fgUntie("/radios/nav1/gs-needle-deflection");
212 fgUntie("/radios/nav2/frequencies/selected");
213 fgUntie("/radios/nav2/frequencies/standby");
214 fgUntie("/radios/nav2/radials/actual");
215 fgUntie("/radios/nav2/radials/selected");
216 fgUntie("/radios/nav2/on");
217 fgUntie("/radios/nav2/ident");
218 fgUntie("/radios/nav2/to-flag");
219 fgUntie("/radios/nav2/from-flag");
220 fgUntie("/radios/nav2/in-range");
221 fgUntie("/radios/nav2/dme/distance");
222 fgUntie("/radios/nav2/dme/in-range");
223 fgUntie("/radios/nav2/heading-needle-deflection");
224 fgUntie("/radios/nav2/gs-needle-deflection");
226 fgUntie("/radios/adf/frequencies/selected");
227 fgUntie("/radios/adf/frequencies/standby");
228 fgUntie("/radios/adf/rotation");
229 fgUntie("/radios/adf/on");
230 fgUntie("/radios/adf/ident");
234 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
235 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
236 double nominalRange )
238 // extend out actual usable range to be 1.3x the published safe range
239 const double usability_factor = 1.3;
241 // assumptions we model the standard service volume, plus
242 // ... rather than specifying a cylinder, we model a cone that
243 // contains the cylinder. Then we put an upside down cone on top
244 // to model diminishing returns at too-high altitudes.
246 // altitude difference
247 double alt = ( aircraftElev * METER_TO_FEET - stationElev );
248 // cout << "aircraft elev = " << aircraftElev * METER_TO_FEET
249 // << " station elev = " << stationElev << endl;
251 if ( nominalRange < 25.0 + FG_EPSILON ) {
252 // Standard Terminal Service Volume
253 return term_tbl->interpolate( alt ) * usability_factor;
254 } else if ( nominalRange < 50.0 + FG_EPSILON ) {
255 // Standard Low Altitude Service Volume
256 // table is based on range of 40, scale to actual range
257 return low_tbl->interpolate( alt ) * nominalRange / 40.0
260 // Standard High Altitude Service Volume
261 // table is based on range of 130, scale to actual range
262 return high_tbl->interpolate( alt ) * nominalRange / 130.0
268 // model standard ILS service volumes as per AIM 1-1-9
269 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
270 double offsetDegrees, double distance )
272 // assumptions we model the standard service volume, plus
274 // altitude difference
275 // double alt = ( aircraftElev * METER_TO_FEET - stationElev );
276 double offset = fabs( offsetDegrees );
279 return FG_ILS_DEFAULT_RANGE;
280 } else if ( offset < 35 ) {
281 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
282 } else if ( offset < 45 ) {
283 return (45 - offset);
290 // Update the various nav values based on position and valid tuned in navs
292 FGRadioStack::update()
294 double lon = longitudeVal->getDoubleValue() * DEG_TO_RAD;
295 double lat = latitudeVal->getDoubleValue() * DEG_TO_RAD;
296 double elev = altitudeVal->getDoubleValue() * FEET_TO_METER;
300 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
305 station = Point3D( nav1_x, nav1_y, nav1_z );
306 nav1_loc_dist = aircraft.distance3D( station );
308 if ( nav1_has_dme ) {
309 // staightline distance
310 station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
311 nav1_dme_dist = aircraft.distance3D( station );
317 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
318 nav1_gs_dist = aircraft.distance3D( station );
324 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
325 nav1_loclat, nav1_loclon,
327 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
328 nav1_heading = az1 - nav1_magvar;
329 // cout << " heading = " << nav1_heading
330 // << " dist = " << nav1_dist << endl;
333 double offset = nav1_heading - nav1_radial;
334 while ( offset < -180.0 ) { offset += 360.0; }
335 while ( offset > 180.0 ) { offset -= 360.0; }
336 // cout << "ils offset = " << offset << endl;
337 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
338 nav1_loc_dist * METER_TO_NM );
340 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
342 // cout << "nav1 range = " << nav1_effective_range
343 // << " (" << nav1_range << ")" << endl;
345 if ( nav1_loc_dist < nav1_effective_range * NM_TO_METER ) {
347 } else if ( nav1_loc_dist < 2 * nav1_effective_range * NM_TO_METER ) {
348 nav1_inrange = sg_random() <
349 ( 2 * nav1_effective_range * NM_TO_METER - nav1_loc_dist ) /
350 (nav1_effective_range * NM_TO_METER);
352 nav1_inrange = false;
356 nav1_radial = nav1_sel_radial;
359 nav1_inrange = false;
361 // cout << "not picking up vor. :-(" << endl;
364 if ( nav1_valid && nav1_inrange ) {
365 // play station ident via audio system if on + ident,
366 // otherwise turn it off
367 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
368 FGSimpleSound *sound;
369 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
370 sound->set_volume( nav1_vol_btn * 0.3 );
371 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
372 sound->set_volume( nav1_vol_btn * 0.3 );
373 if ( nav1_last_time <
374 globals->get_time_params()->get_cur_time() - 30 ) {
375 nav1_last_time = globals->get_time_params()->get_cur_time();
378 if ( nav1_play_count < 4 ) {
380 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
381 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
384 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
386 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
387 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
388 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
393 globals->get_soundmgr()->stop( "nav1-vor-ident" );
394 globals->get_soundmgr()->stop( "nav1-dme-ident" );
399 station = Point3D( nav2_x, nav2_y, nav2_z );
400 nav2_loc_dist = aircraft.distance3D( station );
402 if ( nav2_has_dme ) {
403 // staightline distance
404 station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
405 nav2_dme_dist = aircraft.distance3D( station );
411 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
412 nav2_gs_dist = aircraft.distance3D( station );
418 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
419 nav2_loclat, nav2_loclon,
421 nav2_heading = az1 - nav2_magvar;
422 // cout << " heading = " << nav2_heading
423 // << " dist = " << nav2_dist << endl;
426 double offset = nav2_heading - nav2_radial;
427 while ( offset < -180.0 ) { offset += 360.0; }
428 while ( offset > 180.0 ) { offset -= 360.0; }
429 // cout << "ils offset = " << offset << endl;
430 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
431 nav2_loc_dist * METER_TO_NM );
433 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
435 // cout << "nav2 range = " << nav2_effective_range
436 // << " (" << nav2_range << ")" << endl;
438 if ( nav2_loc_dist < nav2_effective_range * NM_TO_METER ) {
440 } else if ( nav2_loc_dist < 2 * nav2_effective_range * NM_TO_METER ) {
441 nav2_inrange = sg_random() <
442 ( 2 * nav2_effective_range * NM_TO_METER - nav2_loc_dist ) /
443 (nav2_effective_range * NM_TO_METER);
445 nav2_inrange = false;
449 nav2_radial = nav2_sel_radial;
452 nav2_inrange = false;
454 // cout << "not picking up vor. :-(" << endl;
457 if ( nav2_valid && nav2_inrange ) {
458 // play station ident via audio system if on + ident,
459 // otherwise turn it off
460 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
461 FGSimpleSound *sound;
462 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
463 sound->set_volume( nav2_vol_btn * 0.3 );
464 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
465 sound->set_volume( nav2_vol_btn * 0.3 );
466 if ( nav2_last_time <
467 globals->get_time_params()->get_cur_time() - 30 ) {
468 nav2_last_time = globals->get_time_params()->get_cur_time();
471 if ( nav2_play_count < 4 ) {
473 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
474 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
477 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
479 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
480 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
481 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
486 globals->get_soundmgr()->stop( "nav2-vor-ident" );
487 globals->get_soundmgr()->stop( "nav2-dme-ident" );
493 // staightline distance
494 station = Point3D( adf_x, adf_y, adf_z );
495 adf_dist = aircraft.distance3D( station );
498 geo_inverse_wgs_84( elev, lat * RAD_TO_DEG, lon * RAD_TO_DEG,
502 // cout << " heading = " << nav2_heading
503 // << " dist = " << nav2_dist << endl;
505 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
506 if ( adf_dist < adf_effective_range * NM_TO_METER ) {
508 } else if ( adf_dist < 2 * adf_effective_range * NM_TO_METER ) {
509 adf_inrange = sg_random() <
510 ( 2 * adf_effective_range * NM_TO_METER - adf_dist ) /
511 (adf_effective_range * NM_TO_METER);
519 if ( adf_valid && adf_inrange ) {
520 // play station ident via audio system if on + ident,
521 // otherwise turn it off
522 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
523 FGSimpleSound *sound;
524 sound = globals->get_soundmgr()->find( "adf-ident" );
525 sound->set_volume( adf_vol_btn * 0.3 );
527 globals->get_time_params()->get_cur_time() - 30 ) {
528 adf_last_time = globals->get_time_params()->get_cur_time();
531 if ( adf_play_count < 4 ) {
533 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
534 globals->get_soundmgr()->play_once( "adf-ident" );
539 globals->get_soundmgr()->stop( "adf-ident" );
545 // Update current nav/adf radio stations based on current postition
546 void FGRadioStack::search()
548 double lon = longitudeVal->getDoubleValue() * DEG_TO_RAD;
549 double lat = latitudeVal->getDoubleValue() * DEG_TO_RAD;
550 double elev = altitudeVal->getDoubleValue() * FEET_TO_METER;
556 static string last_nav1_ident = "";
557 static string last_nav2_ident = "";
558 static string last_adf_ident = "";
559 static bool last_nav1_vor = false;
560 static bool last_nav2_vor = false;
561 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
562 nav1_ident = ils.get_locident();
564 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
565 nav1_trans_ident = ils.get_trans_ident();
566 last_nav1_ident = nav1_ident;
567 last_nav1_vor = false;
569 nav1_has_dme = ils.get_has_dme();
570 nav1_has_gs = ils.get_has_gs();
572 nav1_loclon = ils.get_loclon();
573 nav1_loclat = ils.get_loclat();
574 nav1_gslon = ils.get_gslon();
575 nav1_gslat = ils.get_gslat();
576 nav1_dmelon = ils.get_dmelon();
577 nav1_dmelat = ils.get_dmelat();
578 nav1_elev = ils.get_gselev();
580 nav1_range = FG_ILS_DEFAULT_RANGE;
581 nav1_effective_range = nav1_range;
582 nav1_target_gs = ils.get_gsangle();
583 nav1_radial = ils.get_locheading();
584 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
585 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
586 nav1_x = ils.get_x();
587 nav1_y = ils.get_y();
588 nav1_z = ils.get_z();
589 nav1_gs_x = ils.get_gs_x();
590 nav1_gs_y = ils.get_gs_y();
591 nav1_gs_z = ils.get_gs_z();
592 nav1_dme_x = ils.get_dme_x();
593 nav1_dme_y = ils.get_dme_y();
594 nav1_dme_z = ils.get_dme_z();
596 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
597 globals->get_soundmgr()->remove( "nav1-vor-ident" );
599 FGSimpleSound *sound;
600 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
601 sound->set_volume( 0.3 );
602 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
604 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
605 globals->get_soundmgr()->remove( "nav1-dme-ident" );
607 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
608 sound->set_volume( 0.3 );
609 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
611 int offset = (int)(sg_random() * 30.0);
612 nav1_play_count = offset / 4;
613 nav1_last_time = globals->get_time_params()->get_cur_time() -
615 // cout << "offset = " << offset << " play_count = "
616 // << nav1_play_count
617 // << " nav1_last_time = " << nav1_last_time
618 // << " current time = "
619 // << globals->get_time_params()->get_cur_time() << endl;
621 // cout << "Found an ils station in range" << endl;
622 // cout << " id = " << ils.get_locident() << endl;
624 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
625 nav1_ident = nav.get_ident();
627 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
628 last_nav1_ident = nav1_ident;
629 last_nav1_vor = true;
630 nav1_trans_ident = nav.get_trans_ident();
632 nav1_has_dme = nav.get_has_dme();
634 nav1_loclon = nav.get_lon();
635 nav1_loclat = nav.get_lat();
636 nav1_elev = nav.get_elev();
637 nav1_magvar = nav.get_magvar();
638 nav1_range = nav.get_range();
639 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
640 nav1_target_gs = 0.0;
641 nav1_radial = nav1_sel_radial;
642 nav1_x = nav1_dme_x = nav.get_x();
643 nav1_y = nav1_dme_y = nav.get_y();
644 nav1_z = nav1_dme_z = nav.get_z();
646 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
647 globals->get_soundmgr()->remove( "nav1-vor-ident" );
649 FGSimpleSound *sound;
650 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
651 sound->set_volume( 0.3 );
652 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
654 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
655 globals->get_soundmgr()->remove( "nav1-dme-ident" );
657 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
658 sound->set_volume( 0.3 );
659 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
661 int offset = (int)(sg_random() * 30.0);
662 nav1_play_count = offset / 4;
663 nav1_last_time = globals->get_time_params()->get_cur_time() -
665 // cout << "offset = " << offset << " play_count = "
666 // << nav1_play_count << " nav1_last_time = "
667 // << nav1_last_time << " current time = "
668 // << globals->get_time_params()->get_cur_time() << endl;
670 // cout << "Found a vor station in range" << endl;
671 // cout << " id = " << nav.get_ident() << endl;
678 nav1_trans_ident = "";
679 last_nav1_ident = "";
680 globals->get_soundmgr()->remove( "nav1-vor-ident" );
681 globals->get_soundmgr()->remove( "nav1-dme-ident" );
682 // cout << "not picking up vor1. :-(" << endl;
685 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
686 nav2_ident = ils.get_locident();
688 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
689 last_nav2_ident = nav2_ident;
690 last_nav2_vor = false;
691 nav2_trans_ident = ils.get_trans_ident();
693 nav2_has_dme = ils.get_has_dme();
694 nav2_has_gs = ils.get_has_gs();
696 nav2_loclon = ils.get_loclon();
697 nav2_loclat = ils.get_loclat();
698 nav2_elev = ils.get_gselev();
700 nav2_range = FG_ILS_DEFAULT_RANGE;
701 nav2_effective_range = nav2_range;
702 nav2_target_gs = ils.get_gsangle();
703 nav2_radial = ils.get_locheading();
704 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
705 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
706 nav2_x = ils.get_x();
707 nav2_y = ils.get_y();
708 nav2_z = ils.get_z();
709 nav2_gs_x = ils.get_gs_x();
710 nav2_gs_y = ils.get_gs_y();
711 nav2_gs_z = ils.get_gs_z();
712 nav2_dme_x = ils.get_dme_x();
713 nav2_dme_y = ils.get_dme_y();
714 nav2_dme_z = ils.get_dme_z();
716 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
717 globals->get_soundmgr()->remove( "nav2-vor-ident" );
719 FGSimpleSound *sound;
720 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
721 sound->set_volume( 0.3 );
722 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
724 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
725 globals->get_soundmgr()->remove( "nav2-dme-ident" );
727 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
728 sound->set_volume( 0.3 );
729 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
731 int offset = (int)(sg_random() * 30.0);
732 nav2_play_count = offset / 4;
733 nav2_last_time = globals->get_time_params()->get_cur_time() -
735 // cout << "offset = " << offset << " play_count = "
736 // << nav2_play_count << " nav2_last_time = "
737 // << nav2_last_time << " current time = "
738 // << globals->get_time_params()->get_cur_time() << endl;
740 // cout << "Found an ils station in range" << endl;
741 // cout << " id = " << ils.get_locident() << endl;
743 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
744 nav2_ident = nav.get_ident();
746 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
747 last_nav2_ident = nav2_ident;
748 last_nav2_vor = true;
749 nav2_trans_ident = nav.get_trans_ident();
751 nav2_has_dme = nav.get_has_dme();
752 nav2_has_dme = false;
753 nav2_loclon = nav.get_lon();
754 nav2_loclat = nav.get_lat();
755 nav2_elev = nav.get_elev();
756 nav2_magvar = nav.get_magvar();
757 nav2_range = nav.get_range();
758 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
759 nav2_target_gs = 0.0;
760 nav2_radial = nav2_sel_radial;
761 nav2_x = nav2_dme_x = nav.get_x();
762 nav2_y = nav2_dme_y = nav.get_y();
763 nav2_z = nav2_dme_z = nav.get_z();
765 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
766 globals->get_soundmgr()->remove( "nav2-vor-ident" );
768 FGSimpleSound *sound;
769 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
770 sound->set_volume( 0.3 );
771 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
773 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
774 globals->get_soundmgr()->remove( "nav2-dme-ident" );
776 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
777 sound->set_volume( 0.3 );
778 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
780 int offset = (int)(sg_random() * 30.0);
781 nav2_play_count = offset / 4;
782 nav2_last_time = globals->get_time_params()->get_cur_time() -
784 // cout << "offset = " << offset << " play_count = "
785 // << nav2_play_count << " nav2_last_time = "
786 // << nav2_last_time << " current time = "
787 // << globals->get_time_params()->get_cur_time() << endl;
789 // cout << "Found a vor station in range" << endl;
790 // cout << " id = " << nav.get_ident() << endl;
797 nav2_trans_ident = "";
798 last_nav2_ident = "";
799 globals->get_soundmgr()->remove( "nav2-vor-ident" );
800 globals->get_soundmgr()->remove( "nav2-dme-ident" );
801 // cout << "not picking up vor1. :-(" << endl;
804 FGBeacon::fgMkrBeacType beacon_type
805 = current_beacons->query( lon * RAD_TO_DEG, lat * RAD_TO_DEG, elev );
807 outer_marker = middle_marker = inner_marker = false;
809 if ( beacon_type == FGBeacon::OUTER ) {
811 cout << "OUTER MARKER" << endl;
812 } else if ( beacon_type == FGBeacon::MIDDLE ) {
813 middle_marker = true;
814 cout << "MIDDLE MARKER" << endl;
815 } else if ( beacon_type == FGBeacon::INNER ) {
817 cout << "INNER MARKER" << endl;
821 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
823 snprintf( freq, 10, "%.0f", adf_freq );
825 adf_ident += nav.get_ident();
826 // cout << "adf ident = " << adf_ident << endl;
828 if ( last_adf_ident != adf_ident ) {
829 last_adf_ident = adf_ident;
831 adf_trans_ident = nav.get_trans_ident();
832 adf_lon = nav.get_lon();
833 adf_lat = nav.get_lat();
834 adf_elev = nav.get_elev();
835 adf_range = nav.get_range();
836 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
841 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
842 globals->get_soundmgr()->remove( "adf-ident" );
844 FGSimpleSound *sound;
845 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
846 sound->set_volume( 0.3 );
847 globals->get_soundmgr()->add( sound, "adf-ident" );
849 int offset = (int)(sg_random() * 30.0);
850 adf_play_count = offset / 4;
851 adf_last_time = globals->get_time_params()->get_cur_time() -
853 // cout << "offset = " << offset << " play_count = "
854 // << adf_play_count << " adf_last_time = "
855 // << adf_last_time << " current time = "
856 // << globals->get_time_params()->get_cur_time() << endl;
858 // cout << "Found an adf station in range" << endl;
859 // cout << " id = " << nav.get_ident() << endl;
864 adf_trans_ident = "";
865 globals->get_soundmgr()->remove( "adf-ident" );
867 // cout << "not picking up adf. :-(" << endl;
872 // return the amount of heading needle deflection, returns a value
873 // clamped to the range of ( -10 , 10 )
874 double FGRadioStack::get_nav1_heading_needle_deflection() const {
877 if ( nav1_inrange ) {
878 r = nav1_heading - nav1_radial;
879 // cout << "Radial = " << nav1_radial
880 // << " Bearing = " << nav1_heading << endl;
882 while ( r > 180.0 ) { r -= 360.0;}
883 while ( r < -180.0 ) { r += 360.0;}
884 if ( fabs(r) > 90.0 ) {
885 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
891 // According to Robin Peel, the ILS is 4x more sensitive than a vor
892 if ( nav1_loc ) { r *= 4.0; }
893 if ( r < -10.0 ) { r = -10.0; }
894 if ( r > 10.0 ) { r = 10.0; }
902 // return the amount of heading needle deflection, returns a value
903 // clamped to the range of ( -10 , 10 )
904 double FGRadioStack::get_nav2_heading_needle_deflection() const {
907 if ( nav2_inrange ) {
908 r = nav2_heading - nav2_radial;
909 // cout << "Radial = " << nav2_radial
910 // << " Bearing = " << nav2_heading << endl;
912 while (r> 180.0) r-=360.0;
913 while (r<-180.0) r+=360.0;
914 if ( fabs(r) > 90.0 )
915 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
916 // According to Robin Peel, the ILS is 4x more sensitive than a vor
917 if ( nav2_loc ) r *= 4.0;
918 if ( r < -10.0 ) r = -10.0;
919 if ( r > 10.0 ) r = 10.0;
927 // return the amount of glide slope needle deflection (.i.e. the
928 // number of degrees we are off the glide slope * 5.0
929 double FGRadioStack::get_nav1_gs_needle_deflection() const {
930 if ( nav1_inrange && nav1_has_gs ) {
931 double x = nav1_gs_dist;
932 double y = (FGBFI::getAltitude() - nav1_elev) * FEET_TO_METER;
933 double angle = atan2( y, x ) * RAD_TO_DEG;
934 return (nav1_target_gs - angle) * 5.0;
941 // return the amount of glide slope needle deflection (.i.e. the
942 // number of degrees we are off the glide slope * 5.0
943 double FGRadioStack::get_nav2_gs_needle_deflection() const {
944 if ( nav2_inrange && nav2_has_gs ) {
945 double x = nav2_gs_dist;
946 double y = (FGBFI::getAltitude() - nav2_elev) * FEET_TO_METER;
947 double angle = atan2( y, x ) * RAD_TO_DEG;
948 return (nav2_target_gs - angle) * 5.0;
956 * Return true if the NAV1 TO flag should be active.
959 FGRadioStack::get_nav1_to_flag () const
962 double offset = fabs(nav1_heading - nav1_radial);
966 return (offset <= 90.0 || offset >= 270.0);
974 * Return true if the NAV1 FROM flag should be active.
977 FGRadioStack::get_nav1_from_flag () const
980 double offset = fabs(nav1_heading - nav1_radial);
984 return (offset > 90.0 && offset < 270.0);
992 * Return true if the NAV2 TO flag should be active.
995 FGRadioStack::get_nav2_to_flag () const
998 double offset = fabs(nav2_heading - nav2_radial);
1002 return (offset <= 90.0 || offset >= 270.0);
1010 * Return true if the NAV2 FROM flag should be active.
1013 FGRadioStack::get_nav2_from_flag () const
1016 double offset = fabs(nav2_heading - nav2_radial);
1020 return (offset > 90.0 && offset < 270.0);