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 <Navaids/ilslist.hxx>
33 #include <Navaids/mkrbeacons.hxx>
34 #include <Navaids/navlist.hxx>
35 #include <Time/event.hxx>
37 #include "radiostack.hxx"
39 static int nav1_play_count = 0;
40 static int nav2_play_count = 0;
41 static int adf_play_count = 0;
42 static time_t nav1_last_time = 0;
43 static time_t nav2_last_time = 0;
44 static time_t adf_last_time = 0;
47 FGRadioStack *current_radiostack;
51 * Boy, this is ugly! Make the VOR range vary by altitude difference.
53 static double kludgeRange ( double stationElev, double aircraftElev,
56 // Assume that the nominal range (usually
57 // 50nm) applies at a 5,000 ft difference.
59 double factor = ((aircraftElev*SG_METER_TO_FEET) - stationElev) / 5000.0;
60 double range = fabs(nominalRange * factor);
62 // Clamp the range to keep it sane; for
63 // now, never less than 25% or more than
64 // 500% of nominal range.
65 if (range < nominalRange/4.0) {
66 range = nominalRange/4.0;
67 } else if (range > nominalRange*5.0) {
68 range = nominalRange*5.0;
75 // periodic radio station search wrapper
76 static void fgRadioSearch( void ) {
77 current_radiostack->search();
81 FGRadioStack::FGRadioStack() :
82 lon_node(fgGetNode("/position/longitude-deg", true)),
83 lat_node(fgGetNode("/position/latitude-deg", true)),
84 alt_node(fgGetNode("/position/altitude-ft", true)),
91 SGPath path( globals->get_fg_root() );
93 term.append( "Navaids/range.term" );
95 low.append( "Navaids/range.low" );
97 high.append( "Navaids/range.high" );
99 term_tbl = new SGInterpTable( term.str() );
100 low_tbl = new SGInterpTable( low.str() );
101 high_tbl = new SGInterpTable( high.str() );
106 FGRadioStack::~FGRadioStack()
108 unbind(); // FIXME: should be called externally
117 FGRadioStack::init ()
126 // Search radio database once per second
127 global_events.Register( "fgRadioSearch()", fgRadioSearch,
128 fgEVENT::FG_EVENT_READY, 1000);
132 FGRadioStack::bind ()
135 fgTie("/radios/nav[0]/frequencies/selected-mhz", this,
136 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
137 fgSetArchivable("/radios/nav[0]/frequencies/selected-mhz");
138 fgTie("/radios/nav[0]/standby-mhz", this,
139 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
140 fgSetArchivable("/radios/nav[0]/standby-mhz");
141 fgTie("/radios/nav[0]/radials/selected-deg", this,
142 &FGRadioStack::get_nav1_sel_radial,
143 &FGRadioStack::set_nav1_sel_radial);
144 fgSetArchivable("/radios/nav[0]/radials/selected-deg");
145 fgTie("/radios/nav[0]/volume", this,
146 &FGRadioStack::get_nav1_vol_btn,
147 &FGRadioStack::set_nav1_vol_btn);
148 fgSetArchivable("/radios/nav[0]/volume");
149 fgTie("/radios/nav[0]/ident", this,
150 &FGRadioStack::get_nav1_ident_btn,
151 &FGRadioStack::set_nav1_ident_btn);
152 fgSetArchivable("/radios/nav[0]/ident");
155 fgTie("/radios/nav[0]/radials/actual-deg", this,
156 &FGRadioStack::get_nav1_radial);
157 fgTie("/radios/nav[0]/to-flag", this, &FGRadioStack::get_nav1_to_flag);
158 fgTie("/radios/nav[0]/from-flag", this, &FGRadioStack::get_nav1_from_flag);
159 fgTie("/radios/nav[0]/in-range", this, &FGRadioStack::get_nav1_inrange);
160 fgTie("/radios/nav[0]/dme/distance-nm", this,
161 &FGRadioStack::get_nav1_dme_dist);
162 fgTie("/radios/nav[0]/dme/in-range", this,
163 &FGRadioStack::get_nav1_dme_inrange);
164 fgTie("/radios/nav[0]/heading-needle-deflection", this,
165 &FGRadioStack::get_nav1_heading_needle_deflection);
166 fgTie("/radios/nav[0]/gs-needle-deflection", this,
167 &FGRadioStack::get_nav1_gs_needle_deflection);
170 fgTie("/radios/nav[1]/frequencies/selected-mhz", this,
171 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
172 fgSetArchivable("/radios/nav[1]/frequencies/selected-mhz");
173 fgTie("/radios/nav[1]/standby-mhz", this,
174 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
175 fgSetArchivable("/radios/nav[1]/standby-mhz");
176 fgTie("/radios/nav[1]/radials/selected-deg", this,
177 &FGRadioStack::get_nav2_sel_radial,
178 &FGRadioStack::set_nav2_sel_radial);
179 fgSetArchivable("/radios/nav[1]/radials/selected-deg");
180 fgTie("/radios/nav[1]/volume", this,
181 &FGRadioStack::get_nav2_vol_btn,
182 &FGRadioStack::set_nav2_vol_btn);
183 fgSetArchivable("/radios/nav[1]/volume");
184 fgTie("/radios/nav[1]/ident", this,
185 &FGRadioStack::get_nav2_ident_btn,
186 &FGRadioStack::set_nav2_ident_btn);
187 fgSetArchivable("/radios/nav[1]/ident");
190 fgTie("/radios/nav[1]/radials/actual-deg", this,
191 &FGRadioStack::get_nav2_radial);
192 fgTie("/radios/nav[1]/to-flag", this, &FGRadioStack::get_nav2_to_flag);
193 fgTie("/radios/nav[1]/from-flag", this, &FGRadioStack::get_nav2_from_flag);
194 fgTie("/radios/nav[1]/in-range", this, &FGRadioStack::get_nav2_inrange);
195 fgTie("/radios/nav[1]/dme/distance-nm", this,
196 &FGRadioStack::get_nav2_dme_dist);
197 fgTie("/radios/nav[1]/dme/in-range", this,
198 &FGRadioStack::get_nav2_dme_inrange);
199 fgTie("/radios/nav[1]/heading-needle-deflection", this,
200 &FGRadioStack::get_nav2_heading_needle_deflection);
201 fgTie("/radios/nav[1]/gs-needle-deflection", this,
202 &FGRadioStack::get_nav2_gs_needle_deflection);
205 fgTie("/radios/adf/frequencies/selected-khz", this,
206 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
207 fgSetArchivable("/radios/adf/frequencies/selected-khz");
208 fgTie("/radios/adf/frequencies/standby-khz", this,
209 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
210 fgSetArchivable("/radios/adf/frequencies/standby-khz");
211 fgTie("/radios/adf/rotation-deg", this,
212 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
213 fgSetArchivable("/radios/adf/rotation-deg");
214 fgTie("/radios/adf/volume", this,
215 &FGRadioStack::get_adf_vol_btn,
216 &FGRadioStack::set_adf_vol_btn);
217 fgSetArchivable("/radios/adf/volume");
218 fgTie("/radios/adf/ident", this,
219 &FGRadioStack::get_adf_ident_btn,
220 &FGRadioStack::set_adf_ident_btn);
221 fgSetArchivable("/radios/adf/ident");
223 fgTie("/radios/marker-beacon/inner", this,
224 &FGRadioStack::get_inner_blink);
225 fgTie("/radios/marker-beacon/middle", this,
226 &FGRadioStack::get_middle_blink);
227 fgTie("/radios/marker-beacon/outer", this,
228 &FGRadioStack::get_outer_blink);
232 FGRadioStack::unbind ()
234 fgUntie("/radios/nav[0]/frequencies/selected-mhz");
235 fgUntie("/radios/nav[0]/standby-mhz");
236 fgUntie("/radios/nav[0]/radials/actual-deg");
237 fgUntie("/radios/nav[0]/radials/selected-deg");
238 fgUntie("/radios/nav[0]/on");
239 fgUntie("/radios/nav[0]/ident");
240 fgUntie("/radios/nav[0]/to-flag");
241 fgUntie("/radios/nav[0]/from-flag");
242 fgUntie("/radios/nav[0]/in-range");
243 fgUntie("/radios/nav[0]/dme/distance-nm");
244 fgUntie("/radios/nav[0]/dme/in-range");
245 fgUntie("/radios/nav[0]/heading-needle-deflection");
246 fgUntie("/radios/nav[0]/gs-needle-deflection");
248 fgUntie("/radios/nav[1]/frequencies/selected-mhz");
249 fgUntie("/radios/nav[1]/standby-mhz");
250 fgUntie("/radios/nav[1]//radials/actual-deg");
251 fgUntie("/radios/nav[1]/radials/selected-deg");
252 fgUntie("/radios/nav[1]/on");
253 fgUntie("/radios/nav[1]/ident");
254 fgUntie("/radios/nav[1]/to-flag");
255 fgUntie("/radios/nav[1]/from-flag");
256 fgUntie("/radios/nav[1]/in-range");
257 fgUntie("/radios/nav[1]/dme/distance-nm");
258 fgUntie("/radios/nav[1]/dme/in-range");
259 fgUntie("/radios/nav[1]/heading-needle-deflection");
260 fgUntie("/radios/nav[1]/gs-needle-deflection");
262 fgUntie("/radios/adf/frequencies/selected-khz");
263 fgUntie("/radios/adf/frequencies/standby-khz");
264 fgUntie("/radios/adf/rotation-deg");
265 fgUntie("/radios/adf/on");
266 fgUntie("/radios/adf/ident");
268 fgUntie("/radios/marker-beacon/inner");
269 fgUntie("/radios/marker-beacon/middle");
270 fgUntie("/radios/marker-beacon/outer");
274 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
275 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
276 double nominalRange )
278 // extend out actual usable range to be 1.3x the published safe range
279 const double usability_factor = 1.3;
281 // assumptions we model the standard service volume, plus
282 // ... rather than specifying a cylinder, we model a cone that
283 // contains the cylinder. Then we put an upside down cone on top
284 // to model diminishing returns at too-high altitudes.
286 // altitude difference
287 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
288 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
289 // << " station elev = " << stationElev << endl;
291 if ( nominalRange < 25.0 + SG_EPSILON ) {
292 // Standard Terminal Service Volume
293 return term_tbl->interpolate( alt ) * usability_factor;
294 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
295 // Standard Low Altitude Service Volume
296 // table is based on range of 40, scale to actual range
297 return low_tbl->interpolate( alt ) * nominalRange / 40.0
300 // Standard High Altitude Service Volume
301 // table is based on range of 130, scale to actual range
302 return high_tbl->interpolate( alt ) * nominalRange / 130.0
308 // model standard ILS service volumes as per AIM 1-1-9
309 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
310 double offsetDegrees, double distance )
312 // assumptions we model the standard service volume, plus
314 // altitude difference
315 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
316 double offset = fabs( offsetDegrees );
319 return FG_ILS_DEFAULT_RANGE;
320 } else if ( offset < 35 ) {
321 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
322 } else if ( offset < 45 ) {
323 return (45 - offset);
330 // Update the various nav values based on position and valid tuned in navs
332 FGRadioStack::update()
334 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
335 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
336 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
340 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
345 station = Point3D( nav1_x, nav1_y, nav1_z );
346 nav1_loc_dist = aircraft.distance3D( station );
348 if ( nav1_has_dme ) {
349 // staightline distance
350 station = Point3D( nav1_dme_x, nav1_dme_y, nav1_dme_z );
351 nav1_dme_dist = aircraft.distance3D( station );
357 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
358 nav1_gs_dist = aircraft.distance3D( station );
364 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
365 nav1_loclat, nav1_loclon,
367 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
368 nav1_heading = az1 - nav1_magvar;
369 // cout << " heading = " << nav1_heading
370 // << " dist = " << nav1_dist << endl;
373 double offset = nav1_heading - nav1_radial;
374 while ( offset < -180.0 ) { offset += 360.0; }
375 while ( offset > 180.0 ) { offset -= 360.0; }
376 // cout << "ils offset = " << offset << endl;
377 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
378 nav1_loc_dist * SG_METER_TO_NM );
380 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
382 // cout << "nav1 range = " << nav1_effective_range
383 // << " (" << nav1_range << ")" << endl;
385 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
387 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
388 nav1_inrange = sg_random() <
389 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
390 (nav1_effective_range * SG_NM_TO_METER);
392 nav1_inrange = false;
396 nav1_radial = nav1_sel_radial;
399 nav1_inrange = false;
401 // cout << "not picking up vor. :-(" << endl;
404 #ifdef ENABLE_AUDIO_SUPPORT
405 if ( nav1_valid && nav1_inrange ) {
406 // play station ident via audio system if on + ident,
407 // otherwise turn it off
408 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
409 FGSimpleSound *sound;
410 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
411 sound->set_volume( nav1_vol_btn * 0.3 );
412 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
413 sound->set_volume( nav1_vol_btn * 0.3 );
414 if ( nav1_last_time <
415 globals->get_time_params()->get_cur_time() - 30 ) {
416 nav1_last_time = globals->get_time_params()->get_cur_time();
419 if ( nav1_play_count < 4 ) {
421 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
422 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
425 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
427 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
428 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
429 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
434 globals->get_soundmgr()->stop( "nav1-vor-ident" );
435 globals->get_soundmgr()->stop( "nav1-dme-ident" );
441 station = Point3D( nav2_x, nav2_y, nav2_z );
442 nav2_loc_dist = aircraft.distance3D( station );
444 if ( nav2_has_dme ) {
445 // staightline distance
446 station = Point3D( nav2_dme_x, nav2_dme_y, nav2_dme_z );
447 nav2_dme_dist = aircraft.distance3D( station );
453 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
454 nav2_gs_dist = aircraft.distance3D( station );
460 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
461 nav2_loclat, nav2_loclon,
463 nav2_heading = az1 - nav2_magvar;
464 // cout << " heading = " << nav2_heading
465 // << " dist = " << nav2_dist << endl;
468 double offset = nav2_heading - nav2_radial;
469 while ( offset < -180.0 ) { offset += 360.0; }
470 while ( offset > 180.0 ) { offset -= 360.0; }
471 // cout << "ils offset = " << offset << endl;
472 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
473 nav2_loc_dist * SG_METER_TO_NM );
475 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
477 // cout << "nav2 range = " << nav2_effective_range
478 // << " (" << nav2_range << ")" << endl;
480 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
482 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
483 nav2_inrange = sg_random() <
484 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
485 (nav2_effective_range * SG_NM_TO_METER);
487 nav2_inrange = false;
491 nav2_radial = nav2_sel_radial;
494 nav2_inrange = false;
496 // cout << "not picking up vor. :-(" << endl;
499 #ifdef ENABLE_AUDIO_SUPPORT
500 if ( nav2_valid && nav2_inrange ) {
501 // play station ident via audio system if on + ident,
502 // otherwise turn it off
503 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
504 FGSimpleSound *sound;
505 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
506 sound->set_volume( nav2_vol_btn * 0.3 );
507 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
508 sound->set_volume( nav2_vol_btn * 0.3 );
509 if ( nav2_last_time <
510 globals->get_time_params()->get_cur_time() - 30 ) {
511 nav2_last_time = globals->get_time_params()->get_cur_time();
514 if ( nav2_play_count < 4 ) {
516 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
517 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
520 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
522 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
523 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
524 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
529 globals->get_soundmgr()->stop( "nav2-vor-ident" );
530 globals->get_soundmgr()->stop( "nav2-dme-ident" );
537 // staightline distance
538 station = Point3D( adf_x, adf_y, adf_z );
539 adf_dist = aircraft.distance3D( station );
542 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
546 // cout << " heading = " << nav2_heading
547 // << " dist = " << nav2_dist << endl;
549 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
550 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
552 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
553 adf_inrange = sg_random() <
554 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
555 (adf_effective_range * SG_NM_TO_METER);
563 #ifdef ENABLE_AUDIO_SUPPORT
564 if ( adf_valid && adf_inrange ) {
565 // play station ident via audio system if on + ident,
566 // otherwise turn it off
567 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
568 FGSimpleSound *sound;
569 sound = globals->get_soundmgr()->find( "adf-ident" );
570 sound->set_volume( adf_vol_btn * 0.3 );
572 globals->get_time_params()->get_cur_time() - 30 ) {
573 adf_last_time = globals->get_time_params()->get_cur_time();
576 if ( adf_play_count < 4 ) {
578 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
579 globals->get_soundmgr()->play_once( "adf-ident" );
584 globals->get_soundmgr()->stop( "adf-ident" );
589 // marker beacon blinking
590 bool light_on = ( outer_blink || middle_blink || inner_blink );
594 if ( light_on && (current - blink > 400000) ) {
597 } else if ( !light_on && (current - blink > 100000) ) {
602 if ( outer_marker ) {
603 outer_blink = light_on;
608 if ( middle_marker ) {
609 middle_blink = light_on;
611 middle_blink = false;
614 if ( inner_marker ) {
615 inner_blink = light_on;
620 // cout << outer_blink << " " << middle_blink << " " << inner_blink << endl;
624 // Update current nav/adf radio stations based on current postition
625 void FGRadioStack::search()
627 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
629 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
630 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
631 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
637 static string last_nav1_ident = "";
638 static string last_nav2_ident = "";
639 static string last_adf_ident = "";
640 static bool last_nav1_vor = false;
641 static bool last_nav2_vor = false;
642 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
643 nav1_ident = ils.get_locident();
645 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
646 nav1_trans_ident = ils.get_trans_ident();
647 last_nav1_ident = nav1_ident;
648 last_nav1_vor = false;
650 nav1_has_dme = ils.get_has_dme();
651 nav1_has_gs = ils.get_has_gs();
653 nav1_loclon = ils.get_loclon();
654 nav1_loclat = ils.get_loclat();
655 nav1_gslon = ils.get_gslon();
656 nav1_gslat = ils.get_gslat();
657 nav1_dmelon = ils.get_dmelon();
658 nav1_dmelat = ils.get_dmelat();
659 nav1_elev = ils.get_gselev();
661 nav1_range = FG_ILS_DEFAULT_RANGE;
662 nav1_effective_range = nav1_range;
663 nav1_target_gs = ils.get_gsangle();
664 nav1_radial = ils.get_locheading();
665 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
666 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
667 nav1_x = ils.get_x();
668 nav1_y = ils.get_y();
669 nav1_z = ils.get_z();
670 nav1_gs_x = ils.get_gs_x();
671 nav1_gs_y = ils.get_gs_y();
672 nav1_gs_z = ils.get_gs_z();
673 nav1_dme_x = ils.get_dme_x();
674 nav1_dme_y = ils.get_dme_y();
675 nav1_dme_z = ils.get_dme_z();
677 #ifdef ENABLE_AUDIO_SUPPORT
678 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
679 globals->get_soundmgr()->remove( "nav1-vor-ident" );
681 FGSimpleSound *sound;
682 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
683 sound->set_volume( 0.3 );
684 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
686 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
687 globals->get_soundmgr()->remove( "nav1-dme-ident" );
689 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
690 sound->set_volume( 0.3 );
691 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
693 int offset = (int)(sg_random() * 30.0);
694 nav1_play_count = offset / 4;
695 nav1_last_time = globals->get_time_params()->get_cur_time() -
697 // cout << "offset = " << offset << " play_count = "
698 // << nav1_play_count
699 // << " nav1_last_time = " << nav1_last_time
700 // << " current time = "
701 // << globals->get_time_params()->get_cur_time() << endl;
704 // cout << "Found an ils station in range" << endl;
705 // cout << " id = " << ils.get_locident() << endl;
707 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
708 nav1_ident = nav.get_ident();
710 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
711 last_nav1_ident = nav1_ident;
712 last_nav1_vor = true;
713 nav1_trans_ident = nav.get_trans_ident();
715 nav1_has_dme = nav.get_has_dme();
717 nav1_loclon = nav.get_lon();
718 nav1_loclat = nav.get_lat();
719 nav1_elev = nav.get_elev();
720 nav1_magvar = nav.get_magvar();
721 nav1_range = nav.get_range();
722 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
723 nav1_target_gs = 0.0;
724 nav1_radial = nav1_sel_radial;
725 nav1_x = nav1_dme_x = nav.get_x();
726 nav1_y = nav1_dme_y = nav.get_y();
727 nav1_z = nav1_dme_z = nav.get_z();
729 #ifdef ENABLE_AUDIO_SUPPORT
730 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
731 globals->get_soundmgr()->remove( "nav1-vor-ident" );
733 FGSimpleSound *sound;
734 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
735 sound->set_volume( 0.3 );
736 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
738 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
739 globals->get_soundmgr()->remove( "nav1-dme-ident" );
741 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
742 sound->set_volume( 0.3 );
743 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
745 int offset = (int)(sg_random() * 30.0);
746 nav1_play_count = offset / 4;
747 nav1_last_time = globals->get_time_params()->get_cur_time() -
749 // cout << "offset = " << offset << " play_count = "
750 // << nav1_play_count << " nav1_last_time = "
751 // << nav1_last_time << " current time = "
752 // << globals->get_time_params()->get_cur_time() << endl;
755 // cout << "Found a vor station in range" << endl;
756 // cout << " id = " << nav.get_ident() << endl;
763 nav1_trans_ident = "";
764 last_nav1_ident = "";
765 #ifdef ENABLE_AUDIO_SUPPORT
766 globals->get_soundmgr()->remove( "nav1-vor-ident" );
767 globals->get_soundmgr()->remove( "nav1-dme-ident" );
769 // cout << "not picking up vor1. :-(" << endl;
772 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
773 nav2_ident = ils.get_locident();
775 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
776 last_nav2_ident = nav2_ident;
777 last_nav2_vor = false;
778 nav2_trans_ident = ils.get_trans_ident();
780 nav2_has_dme = ils.get_has_dme();
781 nav2_has_gs = ils.get_has_gs();
783 nav2_loclon = ils.get_loclon();
784 nav2_loclat = ils.get_loclat();
785 nav2_elev = ils.get_gselev();
787 nav2_range = FG_ILS_DEFAULT_RANGE;
788 nav2_effective_range = nav2_range;
789 nav2_target_gs = ils.get_gsangle();
790 nav2_radial = ils.get_locheading();
791 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
792 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
793 nav2_x = ils.get_x();
794 nav2_y = ils.get_y();
795 nav2_z = ils.get_z();
796 nav2_gs_x = ils.get_gs_x();
797 nav2_gs_y = ils.get_gs_y();
798 nav2_gs_z = ils.get_gs_z();
799 nav2_dme_x = ils.get_dme_x();
800 nav2_dme_y = ils.get_dme_y();
801 nav2_dme_z = ils.get_dme_z();
803 #ifdef ENABLE_AUDIO_SUPPORT
804 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
805 globals->get_soundmgr()->remove( "nav2-vor-ident" );
807 FGSimpleSound *sound;
808 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
809 sound->set_volume( 0.3 );
810 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
812 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
813 globals->get_soundmgr()->remove( "nav2-dme-ident" );
815 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
816 sound->set_volume( 0.3 );
817 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
819 int offset = (int)(sg_random() * 30.0);
820 nav2_play_count = offset / 4;
821 nav2_last_time = globals->get_time_params()->get_cur_time() -
823 // cout << "offset = " << offset << " play_count = "
824 // << nav2_play_count << " nav2_last_time = "
825 // << nav2_last_time << " current time = "
826 // << globals->get_time_params()->get_cur_time() << endl;
829 // cout << "Found an ils station in range" << endl;
830 // cout << " id = " << ils.get_locident() << endl;
832 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
833 nav2_ident = nav.get_ident();
835 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
836 last_nav2_ident = nav2_ident;
837 last_nav2_vor = true;
838 nav2_trans_ident = nav.get_trans_ident();
840 nav2_has_dme = nav.get_has_dme();
841 nav2_has_dme = false;
842 nav2_loclon = nav.get_lon();
843 nav2_loclat = nav.get_lat();
844 nav2_elev = nav.get_elev();
845 nav2_magvar = nav.get_magvar();
846 nav2_range = nav.get_range();
847 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
848 nav2_target_gs = 0.0;
849 nav2_radial = nav2_sel_radial;
850 nav2_x = nav2_dme_x = nav.get_x();
851 nav2_y = nav2_dme_y = nav.get_y();
852 nav2_z = nav2_dme_z = nav.get_z();
854 #ifdef ENABLE_AUDIO_SUPPORT
855 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
856 globals->get_soundmgr()->remove( "nav2-vor-ident" );
858 FGSimpleSound *sound;
859 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
860 sound->set_volume( 0.3 );
861 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
863 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
864 globals->get_soundmgr()->remove( "nav2-dme-ident" );
866 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
867 sound->set_volume( 0.3 );
868 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
870 int offset = (int)(sg_random() * 30.0);
871 nav2_play_count = offset / 4;
872 nav2_last_time = globals->get_time_params()->get_cur_time() -
874 // cout << "offset = " << offset << " play_count = "
875 // << nav2_play_count << " nav2_last_time = "
876 // << nav2_last_time << " current time = "
877 // << globals->get_time_params()->get_cur_time() << endl;
880 // cout << "Found a vor station in range" << endl;
881 // cout << " id = " << nav.get_ident() << endl;
888 nav2_trans_ident = "";
889 last_nav2_ident = "";
890 #ifdef ENABLE_AUDIO_SUPPORT
891 globals->get_soundmgr()->remove( "nav2-vor-ident" );
892 globals->get_soundmgr()->remove( "nav2-dme-ident" );
894 // cout << "not picking up vor1. :-(" << endl;
897 FGMkrBeacon::fgMkrBeacType beacon_type
898 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
899 lat * SGD_RADIANS_TO_DEGREES, elev );
901 outer_marker = middle_marker = inner_marker = false;
903 if ( beacon_type == FGMkrBeacon::OUTER ) {
905 // cout << "OUTER MARKER" << endl;
906 #ifdef ENABLE_AUDIO_SUPPORT
907 if ( last_beacon != FGMkrBeacon::OUTER ) {
908 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
909 FGSimpleSound *sound = beacon.get_outer();
910 sound->set_volume( 0.3 );
911 globals->get_soundmgr()->add( sound, "outer-marker" );
913 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
914 globals->get_soundmgr()->play_looped( "outer-marker" );
918 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
919 middle_marker = true;
920 // cout << "MIDDLE MARKER" << endl;
921 #ifdef ENABLE_AUDIO_SUPPORT
922 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
923 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
924 FGSimpleSound *sound = beacon.get_middle();
925 sound->set_volume( 0.3 );
926 globals->get_soundmgr()->add( sound, "middle-marker" );
928 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
929 globals->get_soundmgr()->play_looped( "middle-marker" );
933 } else if ( beacon_type == FGMkrBeacon::INNER ) {
935 // cout << "INNER MARKER" << endl;
936 #ifdef ENABLE_AUDIO_SUPPORT
937 if ( last_beacon != FGMkrBeacon::INNER ) {
938 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
939 FGSimpleSound *sound = beacon.get_inner();
940 sound->set_volume( 0.3 );
941 globals->get_soundmgr()->add( sound, "inner-marker" );
943 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
944 globals->get_soundmgr()->play_looped( "inner-marker" );
949 // cout << "no marker" << endl;
950 #ifdef ENABLE_AUDIO_SUPPORT
951 globals->get_soundmgr()->stop( "outer-marker" );
952 globals->get_soundmgr()->stop( "middle-marker" );
953 globals->get_soundmgr()->stop( "inner-marker" );
956 last_beacon = beacon_type;
959 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
961 #if defined( _MSC_VER )
962 _snprintf( freq, 10, "%.0f", adf_freq );
964 snprintf( freq, 10, "%.0f", adf_freq );
967 adf_ident += nav.get_ident();
968 // cout << "adf ident = " << adf_ident << endl;
970 if ( last_adf_ident != adf_ident ) {
971 last_adf_ident = adf_ident;
973 adf_trans_ident = nav.get_trans_ident();
974 adf_lon = nav.get_lon();
975 adf_lat = nav.get_lat();
976 adf_elev = nav.get_elev();
977 adf_range = nav.get_range();
978 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
983 #ifdef ENABLE_AUDIO_SUPPORT
984 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
985 globals->get_soundmgr()->remove( "adf-ident" );
987 FGSimpleSound *sound;
988 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
989 sound->set_volume( 0.3 );
990 globals->get_soundmgr()->add( sound, "adf-ident" );
992 int offset = (int)(sg_random() * 30.0);
993 adf_play_count = offset / 4;
994 adf_last_time = globals->get_time_params()->get_cur_time() -
996 // cout << "offset = " << offset << " play_count = "
997 // << adf_play_count << " adf_last_time = "
998 // << adf_last_time << " current time = "
999 // << globals->get_time_params()->get_cur_time() << endl;
1002 // cout << "Found an adf station in range" << endl;
1003 // cout << " id = " << nav.get_ident() << endl;
1008 adf_trans_ident = "";
1009 #ifdef ENABLE_AUDIO_SUPPORT
1010 globals->get_soundmgr()->remove( "adf-ident" );
1012 last_adf_ident = "";
1013 // cout << "not picking up adf. :-(" << endl;
1018 // return the amount of heading needle deflection, returns a value
1019 // clamped to the range of ( -10 , 10 )
1020 double FGRadioStack::get_nav1_heading_needle_deflection() const {
1023 if ( nav1_inrange ) {
1024 r = nav1_heading - nav1_radial;
1025 // cout << "Radial = " << nav1_radial
1026 // << " Bearing = " << nav1_heading << endl;
1028 while ( r > 180.0 ) { r -= 360.0;}
1029 while ( r < -180.0 ) { r += 360.0;}
1030 if ( fabs(r) > 90.0 ) {
1031 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1037 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1038 if ( nav1_loc ) { r *= 4.0; }
1039 if ( r < -10.0 ) { r = -10.0; }
1040 if ( r > 10.0 ) { r = 10.0; }
1048 // return the amount of heading needle deflection, returns a value
1049 // clamped to the range of ( -10 , 10 )
1050 double FGRadioStack::get_nav2_heading_needle_deflection() const {
1053 if ( nav2_inrange ) {
1054 r = nav2_heading - nav2_radial;
1055 // cout << "Radial = " << nav2_radial
1056 // << " Bearing = " << nav2_heading << endl;
1058 while (r> 180.0) r-=360.0;
1059 while (r<-180.0) r+=360.0;
1060 if ( fabs(r) > 90.0 )
1061 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1062 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1063 if ( nav2_loc ) r *= 4.0;
1064 if ( r < -10.0 ) r = -10.0;
1065 if ( r > 10.0 ) r = 10.0;
1073 // return the amount of glide slope needle deflection (.i.e. the
1074 // number of degrees we are off the glide slope * 5.0
1075 double FGRadioStack::get_nav1_gs_needle_deflection() const {
1076 if ( nav1_inrange && nav1_has_gs ) {
1077 double x = nav1_gs_dist;
1078 double y = (fgGetDouble("/position/altitude-ft") - nav1_elev)
1080 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1081 return (nav1_target_gs - angle) * 5.0;
1088 // return the amount of glide slope needle deflection (.i.e. the
1089 // number of degrees we are off the glide slope * 5.0
1090 double FGRadioStack::get_nav2_gs_needle_deflection() const {
1091 if ( nav2_inrange && nav2_has_gs ) {
1092 double x = nav2_gs_dist;
1093 double y = (fgGetDouble("/position/altitude-ft") - nav2_elev)
1095 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1096 return (nav2_target_gs - angle) * 5.0;
1104 * Return true if the NAV1 TO flag should be active.
1107 FGRadioStack::get_nav1_to_flag () const
1110 double offset = fabs(nav1_heading - nav1_radial);
1114 return (offset <= 90.0 || offset >= 270.0);
1122 * Return true if the NAV1 FROM flag should be active.
1125 FGRadioStack::get_nav1_from_flag () const
1128 double offset = fabs(nav1_heading - nav1_radial);
1132 return (offset > 90.0 && offset < 270.0);
1140 * Return true if the NAV2 TO flag should be active.
1143 FGRadioStack::get_nav2_to_flag () const
1146 double offset = fabs(nav2_heading - nav2_radial);
1150 return (offset <= 90.0 || offset >= 270.0);
1158 * Return true if the NAV2 FROM flag should be active.
1161 FGRadioStack::get_nav2_from_flag () const
1164 double offset = fabs(nav2_heading - nav2_radial);
1168 return (offset > 90.0 && offset < 270.0);