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*SG_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 ()
110 SGPath path( globals->get_fg_root() );
112 term.append( "Navaids/range.term" );
114 low.append( "Navaids/range.low" );
116 high.append( "Navaids/range.high" );
118 term_tbl = new SGInterpTable( term.str() );
119 low_tbl = new SGInterpTable( low.str() );
120 high_tbl = new SGInterpTable( high.str() );
122 // Search radio database once per second
123 global_events.Register( "fgRadioSearch()", fgRadioSearch,
124 fgEVENT::FG_EVENT_READY, 1000);
128 FGRadioStack::bind ()
131 fgTie("/radios/nav1/frequencies/selected", this,
132 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
133 fgTie("/radios/nav1/frequencies/standby", this,
134 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
135 fgTie("/radios/nav1/radials/selected", this,
136 &FGRadioStack::get_nav1_sel_radial,
137 &FGRadioStack::set_nav1_sel_radial);
138 fgTie("/radios/nav1/volume", this,
139 &FGRadioStack::get_nav1_vol_btn,
140 &FGRadioStack::set_nav1_vol_btn);
141 fgTie("/radios/nav1/ident", this,
142 &FGRadioStack::get_nav1_ident_btn,
143 &FGRadioStack::set_nav1_ident_btn);
146 fgTie("/radios/nav1/radials/actual", this, &FGRadioStack::get_nav1_radial);
147 fgTie("/radios/nav1/to-flag", this, &FGRadioStack::get_nav1_to_flag);
148 fgTie("/radios/nav1/from-flag", this, &FGRadioStack::get_nav1_from_flag);
149 fgTie("/radios/nav1/in-range", this, &FGRadioStack::get_nav1_inrange);
150 fgTie("/radios/nav1/dme/distance", this, &FGRadioStack::get_nav1_dme_dist);
151 fgTie("/radios/nav1/dme/in-range", this,
152 &FGRadioStack::get_nav1_dme_inrange);
153 fgTie("/radios/nav1/heading-needle-deflection", this,
154 &FGRadioStack::get_nav1_heading_needle_deflection);
155 fgTie("/radios/nav1/gs-needle-deflection", this,
156 &FGRadioStack::get_nav1_gs_needle_deflection);
159 fgTie("/radios/nav2/frequencies/selected", this,
160 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
161 fgTie("/radios/nav2/frequencies/standby", this,
162 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
163 fgTie("/radios/nav2/radials/selected", this,
164 &FGRadioStack::get_nav2_sel_radial,
165 &FGRadioStack::set_nav2_sel_radial);
166 fgTie("/radios/nav2/volume", this,
167 &FGRadioStack::get_nav2_vol_btn,
168 &FGRadioStack::set_nav2_vol_btn);
169 fgTie("/radios/nav2/ident", this,
170 &FGRadioStack::get_nav2_ident_btn,
171 &FGRadioStack::set_nav2_ident_btn);
174 fgTie("/radios/nav2/radials/actual", this, &FGRadioStack::get_nav2_radial);
175 fgTie("/radios/nav2/to-flag", this, &FGRadioStack::get_nav2_to_flag);
176 fgTie("/radios/nav2/from-flag", this, &FGRadioStack::get_nav2_from_flag);
177 fgTie("/radios/nav2/in-range", this, &FGRadioStack::get_nav2_inrange);
178 fgTie("/radios/nav2/dme/distance", this, &FGRadioStack::get_nav2_dme_dist);
179 fgTie("/radios/nav2/dme/in-range", this,
180 &FGRadioStack::get_nav2_dme_inrange);
181 fgTie("/radios/nav2/heading-needle-deflection", this,
182 &FGRadioStack::get_nav2_heading_needle_deflection);
183 fgTie("/radios/nav2/gs-needle-deflection", this,
184 &FGRadioStack::get_nav2_gs_needle_deflection);
187 fgTie("/radios/adf/frequencies/selected", this,
188 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
189 fgTie("/radios/adf/frequencies/standby", this,
190 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
191 fgTie("/radios/adf/rotation", this,
192 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
193 fgTie("/radios/adf/volume", this,
194 &FGRadioStack::get_adf_vol_btn,
195 &FGRadioStack::set_adf_vol_btn);
196 fgTie("/radios/adf/ident", this,
197 &FGRadioStack::get_adf_ident_btn,
198 &FGRadioStack::set_adf_ident_btn);
202 FGRadioStack::unbind ()
204 fgUntie("/radios/nav1/frequencies/selected");
205 fgUntie("/radios/nav1/frequencies/standby");
206 fgUntie("/radios/nav1/radials/actual");
207 fgUntie("/radios/nav1/radials/selected");
208 fgUntie("/radios/nav1/on");
209 fgUntie("/radios/nav1/ident");
210 fgUntie("/radios/nav1/to-flag");
211 fgUntie("/radios/nav1/from-flag");
212 fgUntie("/radios/nav1/in-range");
213 fgUntie("/radios/nav1/dme/distance");
214 fgUntie("/radios/nav1/dme/in-range");
215 fgUntie("/radios/nav1/heading-needle-deflection");
216 fgUntie("/radios/nav1/gs-needle-deflection");
218 fgUntie("/radios/nav2/frequencies/selected");
219 fgUntie("/radios/nav2/frequencies/standby");
220 fgUntie("/radios/nav2/radials/actual");
221 fgUntie("/radios/nav2/radials/selected");
222 fgUntie("/radios/nav2/on");
223 fgUntie("/radios/nav2/ident");
224 fgUntie("/radios/nav2/to-flag");
225 fgUntie("/radios/nav2/from-flag");
226 fgUntie("/radios/nav2/in-range");
227 fgUntie("/radios/nav2/dme/distance");
228 fgUntie("/radios/nav2/dme/in-range");
229 fgUntie("/radios/nav2/heading-needle-deflection");
230 fgUntie("/radios/nav2/gs-needle-deflection");
232 fgUntie("/radios/adf/frequencies/selected");
233 fgUntie("/radios/adf/frequencies/standby");
234 fgUntie("/radios/adf/rotation");
235 fgUntie("/radios/adf/on");
236 fgUntie("/radios/adf/ident");
240 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
241 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
242 double nominalRange )
244 // extend out actual usable range to be 1.3x the published safe range
245 const double usability_factor = 1.3;
247 // assumptions we model the standard service volume, plus
248 // ... rather than specifying a cylinder, we model a cone that
249 // contains the cylinder. Then we put an upside down cone on top
250 // to model diminishing returns at too-high altitudes.
252 // altitude difference
253 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
254 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
255 // << " station elev = " << stationElev << endl;
257 if ( nominalRange < 25.0 + SG_EPSILON ) {
258 // Standard Terminal Service Volume
259 return term_tbl->interpolate( alt ) * usability_factor;
260 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
261 // Standard Low Altitude Service Volume
262 // table is based on range of 40, scale to actual range
263 return low_tbl->interpolate( alt ) * nominalRange / 40.0
266 // Standard High Altitude Service Volume
267 // table is based on range of 130, scale to actual range
268 return high_tbl->interpolate( alt ) * nominalRange / 130.0
274 // model standard ILS service volumes as per AIM 1-1-9
275 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
276 double offsetDegrees, double distance )
278 // assumptions we model the standard service volume, plus
280 // altitude difference
281 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
282 double offset = fabs( offsetDegrees );
285 return FG_ILS_DEFAULT_RANGE;
286 } else if ( offset < 35 ) {
287 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
288 } else if ( offset < 45 ) {
289 return (45 - offset);
296 // Update the various nav values based on position and valid tuned in navs
298 FGRadioStack::update()
300 double lon = longitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
301 double lat = latitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
302 double elev = altitudeVal->getDoubleValue() * SG_FEET_TO_METER;
306 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
311 station = Point3D( nav1_x, nav1_y, nav1_z );
312 nav1_loc_dist = aircraft.distance3D( station );
314 if ( nav1_has_dme ) {
315 // staightline distance
316 station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
317 nav1_dme_dist = aircraft.distance3D( station );
323 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
324 nav1_gs_dist = aircraft.distance3D( station );
330 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
331 nav1_loclat, nav1_loclon,
333 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
334 nav1_heading = az1 - nav1_magvar;
335 // cout << " heading = " << nav1_heading
336 // << " dist = " << nav1_dist << endl;
339 double offset = nav1_heading - nav1_radial;
340 while ( offset < -180.0 ) { offset += 360.0; }
341 while ( offset > 180.0 ) { offset -= 360.0; }
342 // cout << "ils offset = " << offset << endl;
343 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
344 nav1_loc_dist * SG_METER_TO_NM );
346 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
348 // cout << "nav1 range = " << nav1_effective_range
349 // << " (" << nav1_range << ")" << endl;
351 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
353 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
354 nav1_inrange = sg_random() <
355 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
356 (nav1_effective_range * SG_NM_TO_METER);
358 nav1_inrange = false;
362 nav1_radial = nav1_sel_radial;
365 nav1_inrange = false;
367 // cout << "not picking up vor. :-(" << endl;
370 if ( nav1_valid && nav1_inrange ) {
371 // play station ident via audio system if on + ident,
372 // otherwise turn it off
373 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
374 FGSimpleSound *sound;
375 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
376 sound->set_volume( nav1_vol_btn * 0.3 );
377 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
378 sound->set_volume( nav1_vol_btn * 0.3 );
379 if ( nav1_last_time <
380 globals->get_time_params()->get_cur_time() - 30 ) {
381 nav1_last_time = globals->get_time_params()->get_cur_time();
384 if ( nav1_play_count < 4 ) {
386 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
387 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
390 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
392 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
393 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
394 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
399 globals->get_soundmgr()->stop( "nav1-vor-ident" );
400 globals->get_soundmgr()->stop( "nav1-dme-ident" );
405 station = Point3D( nav2_x, nav2_y, nav2_z );
406 nav2_loc_dist = aircraft.distance3D( station );
408 if ( nav2_has_dme ) {
409 // staightline distance
410 station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
411 nav2_dme_dist = aircraft.distance3D( station );
417 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
418 nav2_gs_dist = aircraft.distance3D( station );
424 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
425 nav2_loclat, nav2_loclon,
427 nav2_heading = az1 - nav2_magvar;
428 // cout << " heading = " << nav2_heading
429 // << " dist = " << nav2_dist << endl;
432 double offset = nav2_heading - nav2_radial;
433 while ( offset < -180.0 ) { offset += 360.0; }
434 while ( offset > 180.0 ) { offset -= 360.0; }
435 // cout << "ils offset = " << offset << endl;
436 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
437 nav2_loc_dist * SG_METER_TO_NM );
439 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
441 // cout << "nav2 range = " << nav2_effective_range
442 // << " (" << nav2_range << ")" << endl;
444 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
446 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
447 nav2_inrange = sg_random() <
448 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
449 (nav2_effective_range * SG_NM_TO_METER);
451 nav2_inrange = false;
455 nav2_radial = nav2_sel_radial;
458 nav2_inrange = false;
460 // cout << "not picking up vor. :-(" << endl;
463 if ( nav2_valid && nav2_inrange ) {
464 // play station ident via audio system if on + ident,
465 // otherwise turn it off
466 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
467 FGSimpleSound *sound;
468 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
469 sound->set_volume( nav2_vol_btn * 0.3 );
470 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
471 sound->set_volume( nav2_vol_btn * 0.3 );
472 if ( nav2_last_time <
473 globals->get_time_params()->get_cur_time() - 30 ) {
474 nav2_last_time = globals->get_time_params()->get_cur_time();
477 if ( nav2_play_count < 4 ) {
479 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
480 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
483 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
485 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
486 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
487 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
492 globals->get_soundmgr()->stop( "nav2-vor-ident" );
493 globals->get_soundmgr()->stop( "nav2-dme-ident" );
499 // staightline distance
500 station = Point3D( adf_x, adf_y, adf_z );
501 adf_dist = aircraft.distance3D( station );
504 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
508 // cout << " heading = " << nav2_heading
509 // << " dist = " << nav2_dist << endl;
511 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
512 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
514 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
515 adf_inrange = sg_random() <
516 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
517 (adf_effective_range * SG_NM_TO_METER);
525 if ( adf_valid && adf_inrange ) {
526 // play station ident via audio system if on + ident,
527 // otherwise turn it off
528 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
529 FGSimpleSound *sound;
530 sound = globals->get_soundmgr()->find( "adf-ident" );
531 sound->set_volume( adf_vol_btn * 0.3 );
533 globals->get_time_params()->get_cur_time() - 30 ) {
534 adf_last_time = globals->get_time_params()->get_cur_time();
537 if ( adf_play_count < 4 ) {
539 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
540 globals->get_soundmgr()->play_once( "adf-ident" );
545 globals->get_soundmgr()->stop( "adf-ident" );
551 // Update current nav/adf radio stations based on current postition
552 void FGRadioStack::search()
554 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
556 double lon = longitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
557 double lat = latitudeVal->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
558 double elev = altitudeVal->getDoubleValue() * SG_FEET_TO_METER;
564 static string last_nav1_ident = "";
565 static string last_nav2_ident = "";
566 static string last_adf_ident = "";
567 static bool last_nav1_vor = false;
568 static bool last_nav2_vor = false;
569 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
570 nav1_ident = ils.get_locident();
572 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
573 nav1_trans_ident = ils.get_trans_ident();
574 last_nav1_ident = nav1_ident;
575 last_nav1_vor = false;
577 nav1_has_dme = ils.get_has_dme();
578 nav1_has_gs = ils.get_has_gs();
580 nav1_loclon = ils.get_loclon();
581 nav1_loclat = ils.get_loclat();
582 nav1_gslon = ils.get_gslon();
583 nav1_gslat = ils.get_gslat();
584 nav1_dmelon = ils.get_dmelon();
585 nav1_dmelat = ils.get_dmelat();
586 nav1_elev = ils.get_gselev();
588 nav1_range = FG_ILS_DEFAULT_RANGE;
589 nav1_effective_range = nav1_range;
590 nav1_target_gs = ils.get_gsangle();
591 nav1_radial = ils.get_locheading();
592 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
593 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
594 nav1_x = ils.get_x();
595 nav1_y = ils.get_y();
596 nav1_z = ils.get_z();
597 nav1_gs_x = ils.get_gs_x();
598 nav1_gs_y = ils.get_gs_y();
599 nav1_gs_z = ils.get_gs_z();
600 nav1_dme_x = ils.get_dme_x();
601 nav1_dme_y = ils.get_dme_y();
602 nav1_dme_z = ils.get_dme_z();
604 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
605 globals->get_soundmgr()->remove( "nav1-vor-ident" );
607 FGSimpleSound *sound;
608 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
609 sound->set_volume( 0.3 );
610 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
612 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
613 globals->get_soundmgr()->remove( "nav1-dme-ident" );
615 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
616 sound->set_volume( 0.3 );
617 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
619 int offset = (int)(sg_random() * 30.0);
620 nav1_play_count = offset / 4;
621 nav1_last_time = globals->get_time_params()->get_cur_time() -
623 // cout << "offset = " << offset << " play_count = "
624 // << nav1_play_count
625 // << " nav1_last_time = " << nav1_last_time
626 // << " current time = "
627 // << globals->get_time_params()->get_cur_time() << endl;
629 // cout << "Found an ils station in range" << endl;
630 // cout << " id = " << ils.get_locident() << endl;
632 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
633 nav1_ident = nav.get_ident();
635 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
636 last_nav1_ident = nav1_ident;
637 last_nav1_vor = true;
638 nav1_trans_ident = nav.get_trans_ident();
640 nav1_has_dme = nav.get_has_dme();
642 nav1_loclon = nav.get_lon();
643 nav1_loclat = nav.get_lat();
644 nav1_elev = nav.get_elev();
645 nav1_magvar = nav.get_magvar();
646 nav1_range = nav.get_range();
647 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
648 nav1_target_gs = 0.0;
649 nav1_radial = nav1_sel_radial;
650 nav1_x = nav1_dme_x = nav.get_x();
651 nav1_y = nav1_dme_y = nav.get_y();
652 nav1_z = nav1_dme_z = nav.get_z();
654 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
655 globals->get_soundmgr()->remove( "nav1-vor-ident" );
657 FGSimpleSound *sound;
658 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
659 sound->set_volume( 0.3 );
660 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
662 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
663 globals->get_soundmgr()->remove( "nav1-dme-ident" );
665 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
666 sound->set_volume( 0.3 );
667 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
669 int offset = (int)(sg_random() * 30.0);
670 nav1_play_count = offset / 4;
671 nav1_last_time = globals->get_time_params()->get_cur_time() -
673 // cout << "offset = " << offset << " play_count = "
674 // << nav1_play_count << " nav1_last_time = "
675 // << nav1_last_time << " current time = "
676 // << globals->get_time_params()->get_cur_time() << endl;
678 // cout << "Found a vor station in range" << endl;
679 // cout << " id = " << nav.get_ident() << endl;
686 nav1_trans_ident = "";
687 last_nav1_ident = "";
688 globals->get_soundmgr()->remove( "nav1-vor-ident" );
689 globals->get_soundmgr()->remove( "nav1-dme-ident" );
690 // cout << "not picking up vor1. :-(" << endl;
693 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
694 nav2_ident = ils.get_locident();
696 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
697 last_nav2_ident = nav2_ident;
698 last_nav2_vor = false;
699 nav2_trans_ident = ils.get_trans_ident();
701 nav2_has_dme = ils.get_has_dme();
702 nav2_has_gs = ils.get_has_gs();
704 nav2_loclon = ils.get_loclon();
705 nav2_loclat = ils.get_loclat();
706 nav2_elev = ils.get_gselev();
708 nav2_range = FG_ILS_DEFAULT_RANGE;
709 nav2_effective_range = nav2_range;
710 nav2_target_gs = ils.get_gsangle();
711 nav2_radial = ils.get_locheading();
712 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
713 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
714 nav2_x = ils.get_x();
715 nav2_y = ils.get_y();
716 nav2_z = ils.get_z();
717 nav2_gs_x = ils.get_gs_x();
718 nav2_gs_y = ils.get_gs_y();
719 nav2_gs_z = ils.get_gs_z();
720 nav2_dme_x = ils.get_dme_x();
721 nav2_dme_y = ils.get_dme_y();
722 nav2_dme_z = ils.get_dme_z();
724 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
725 globals->get_soundmgr()->remove( "nav2-vor-ident" );
727 FGSimpleSound *sound;
728 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
729 sound->set_volume( 0.3 );
730 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
732 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
733 globals->get_soundmgr()->remove( "nav2-dme-ident" );
735 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
736 sound->set_volume( 0.3 );
737 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
739 int offset = (int)(sg_random() * 30.0);
740 nav2_play_count = offset / 4;
741 nav2_last_time = globals->get_time_params()->get_cur_time() -
743 // cout << "offset = " << offset << " play_count = "
744 // << nav2_play_count << " nav2_last_time = "
745 // << nav2_last_time << " current time = "
746 // << globals->get_time_params()->get_cur_time() << endl;
748 // cout << "Found an ils station in range" << endl;
749 // cout << " id = " << ils.get_locident() << endl;
751 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
752 nav2_ident = nav.get_ident();
754 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
755 last_nav2_ident = nav2_ident;
756 last_nav2_vor = true;
757 nav2_trans_ident = nav.get_trans_ident();
759 nav2_has_dme = nav.get_has_dme();
760 nav2_has_dme = false;
761 nav2_loclon = nav.get_lon();
762 nav2_loclat = nav.get_lat();
763 nav2_elev = nav.get_elev();
764 nav2_magvar = nav.get_magvar();
765 nav2_range = nav.get_range();
766 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
767 nav2_target_gs = 0.0;
768 nav2_radial = nav2_sel_radial;
769 nav2_x = nav2_dme_x = nav.get_x();
770 nav2_y = nav2_dme_y = nav.get_y();
771 nav2_z = nav2_dme_z = nav.get_z();
773 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
774 globals->get_soundmgr()->remove( "nav2-vor-ident" );
776 FGSimpleSound *sound;
777 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
778 sound->set_volume( 0.3 );
779 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
781 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
782 globals->get_soundmgr()->remove( "nav2-dme-ident" );
784 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
785 sound->set_volume( 0.3 );
786 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
788 int offset = (int)(sg_random() * 30.0);
789 nav2_play_count = offset / 4;
790 nav2_last_time = globals->get_time_params()->get_cur_time() -
792 // cout << "offset = " << offset << " play_count = "
793 // << nav2_play_count << " nav2_last_time = "
794 // << nav2_last_time << " current time = "
795 // << globals->get_time_params()->get_cur_time() << endl;
797 // cout << "Found a vor station in range" << endl;
798 // cout << " id = " << nav.get_ident() << endl;
805 nav2_trans_ident = "";
806 last_nav2_ident = "";
807 globals->get_soundmgr()->remove( "nav2-vor-ident" );
808 globals->get_soundmgr()->remove( "nav2-dme-ident" );
809 // cout << "not picking up vor1. :-(" << endl;
812 FGMkrBeacon::fgMkrBeacType beacon_type
813 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
814 lat * SGD_RADIANS_TO_DEGREES, elev );
816 outer_marker = middle_marker = inner_marker = false;
818 if ( beacon_type == FGMkrBeacon::OUTER ) {
820 cout << "OUTER MARKER" << endl;
821 if ( last_beacon != FGMkrBeacon::OUTER ) {
822 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
823 FGSimpleSound *sound = beacon.get_outer();
824 sound->set_volume( 0.3 );
825 globals->get_soundmgr()->add( sound, "outer-marker" );
827 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
828 globals->get_soundmgr()->play_looped( "outer-marker" );
831 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
832 middle_marker = true;
833 cout << "MIDDLE MARKER" << endl;
834 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
835 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
836 FGSimpleSound *sound = beacon.get_middle();
837 sound->set_volume( 0.3 );
838 globals->get_soundmgr()->add( sound, "middle-marker" );
840 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
841 globals->get_soundmgr()->play_looped( "middle-marker" );
844 } else if ( beacon_type == FGMkrBeacon::INNER ) {
846 cout << "INNER MARKER" << endl;
847 if ( last_beacon != FGMkrBeacon::INNER ) {
848 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
849 FGSimpleSound *sound = beacon.get_inner();
850 sound->set_volume( 0.3 );
851 globals->get_soundmgr()->add( sound, "inner-marker" );
853 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
854 globals->get_soundmgr()->play_looped( "inner-marker" );
858 cout << "no marker" << endl;
859 globals->get_soundmgr()->stop( "outer-marker" );
860 globals->get_soundmgr()->stop( "middle-marker" );
861 globals->get_soundmgr()->stop( "inner-marker" );
863 last_beacon = beacon_type;
866 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
868 #if defined( _MSC_VER )
869 _snprintf( freq, 10, "%.0f", adf_freq );
871 snprintf( freq, 10, "%.0f", adf_freq );
874 adf_ident += nav.get_ident();
875 // cout << "adf ident = " << adf_ident << endl;
877 if ( last_adf_ident != adf_ident ) {
878 last_adf_ident = adf_ident;
880 adf_trans_ident = nav.get_trans_ident();
881 adf_lon = nav.get_lon();
882 adf_lat = nav.get_lat();
883 adf_elev = nav.get_elev();
884 adf_range = nav.get_range();
885 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
890 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
891 globals->get_soundmgr()->remove( "adf-ident" );
893 FGSimpleSound *sound;
894 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
895 sound->set_volume( 0.3 );
896 globals->get_soundmgr()->add( sound, "adf-ident" );
898 int offset = (int)(sg_random() * 30.0);
899 adf_play_count = offset / 4;
900 adf_last_time = globals->get_time_params()->get_cur_time() -
902 // cout << "offset = " << offset << " play_count = "
903 // << adf_play_count << " adf_last_time = "
904 // << adf_last_time << " current time = "
905 // << globals->get_time_params()->get_cur_time() << endl;
907 // cout << "Found an adf station in range" << endl;
908 // cout << " id = " << nav.get_ident() << endl;
913 adf_trans_ident = "";
914 globals->get_soundmgr()->remove( "adf-ident" );
916 // cout << "not picking up adf. :-(" << endl;
921 // return the amount of heading needle deflection, returns a value
922 // clamped to the range of ( -10 , 10 )
923 double FGRadioStack::get_nav1_heading_needle_deflection() const {
926 if ( nav1_inrange ) {
927 r = nav1_heading - nav1_radial;
928 // cout << "Radial = " << nav1_radial
929 // << " Bearing = " << nav1_heading << endl;
931 while ( r > 180.0 ) { r -= 360.0;}
932 while ( r < -180.0 ) { r += 360.0;}
933 if ( fabs(r) > 90.0 ) {
934 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
940 // According to Robin Peel, the ILS is 4x more sensitive than a vor
941 if ( nav1_loc ) { r *= 4.0; }
942 if ( r < -10.0 ) { r = -10.0; }
943 if ( r > 10.0 ) { r = 10.0; }
951 // return the amount of heading needle deflection, returns a value
952 // clamped to the range of ( -10 , 10 )
953 double FGRadioStack::get_nav2_heading_needle_deflection() const {
956 if ( nav2_inrange ) {
957 r = nav2_heading - nav2_radial;
958 // cout << "Radial = " << nav2_radial
959 // << " Bearing = " << nav2_heading << endl;
961 while (r> 180.0) r-=360.0;
962 while (r<-180.0) r+=360.0;
963 if ( fabs(r) > 90.0 )
964 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
965 // According to Robin Peel, the ILS is 4x more sensitive than a vor
966 if ( nav2_loc ) r *= 4.0;
967 if ( r < -10.0 ) r = -10.0;
968 if ( r > 10.0 ) r = 10.0;
976 // return the amount of glide slope needle deflection (.i.e. the
977 // number of degrees we are off the glide slope * 5.0
978 double FGRadioStack::get_nav1_gs_needle_deflection() const {
979 if ( nav1_inrange && nav1_has_gs ) {
980 double x = nav1_gs_dist;
981 double y = (FGBFI::getAltitude() - nav1_elev) * SG_FEET_TO_METER;
982 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
983 return (nav1_target_gs - angle) * 5.0;
990 // return the amount of glide slope needle deflection (.i.e. the
991 // number of degrees we are off the glide slope * 5.0
992 double FGRadioStack::get_nav2_gs_needle_deflection() const {
993 if ( nav2_inrange && nav2_has_gs ) {
994 double x = nav2_gs_dist;
995 double y = (FGBFI::getAltitude() - nav2_elev) * SG_FEET_TO_METER;
996 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
997 return (nav2_target_gs - angle) * 5.0;
1005 * Return true if the NAV1 TO flag should be active.
1008 FGRadioStack::get_nav1_to_flag () const
1011 double offset = fabs(nav1_heading - nav1_radial);
1015 return (offset <= 90.0 || offset >= 270.0);
1023 * Return true if the NAV1 FROM flag should be active.
1026 FGRadioStack::get_nav1_from_flag () const
1029 double offset = fabs(nav1_heading - nav1_radial);
1033 return (offset > 90.0 && offset < 270.0);
1041 * Return true if the NAV2 TO flag should be active.
1044 FGRadioStack::get_nav2_to_flag () const
1047 double offset = fabs(nav2_heading - nav2_radial);
1051 return (offset <= 90.0 || offset >= 270.0);
1059 * Return true if the NAV2 FROM flag should be active.
1062 FGRadioStack::get_nav2_from_flag () const
1065 double offset = fabs(nav2_heading - nav2_radial);
1069 return (offset > 90.0 && offset < 270.0);