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 <stdio.h> // snprintf
30 #include <simgear/compiler.h>
31 #include <simgear/math/sg_random.h>
33 #include <Aircraft/aircraft.hxx>
34 #include <Navaids/ilslist.hxx>
35 #include <Navaids/mkrbeacons.hxx>
36 #include <Navaids/navlist.hxx>
37 #include <Time/FGEventMgr.hxx>
38 #include <boost/bind.hpp>
40 #include "radiostack.hxx"
45 static int nav1_play_count = 0;
46 static int nav2_play_count = 0;
47 static int adf_play_count = 0;
48 static time_t nav1_last_time = 0;
49 static time_t nav2_last_time = 0;
50 static time_t adf_last_time = 0;
53 FGRadioStack *current_radiostack;
57 * Boy, this is ugly! Make the VOR range vary by altitude difference.
59 static double kludgeRange ( double stationElev, double aircraftElev,
62 // Assume that the nominal range (usually
63 // 50nm) applies at a 5,000 ft difference.
65 double factor = ((aircraftElev*SG_METER_TO_FEET) - stationElev) / 5000.0;
66 double range = fabs(nominalRange * factor);
68 // Clamp the range to keep it sane; for
69 // now, never less than 25% or more than
70 // 500% of nominal range.
71 if (range < nominalRange/4.0) {
72 range = nominalRange/4.0;
73 } else if (range > nominalRange*5.0) {
74 range = nominalRange*5.0;
82 FGRadioStack::FGRadioStack() :
83 lon_node(fgGetNode("/position/longitude-deg", true)),
84 lat_node(fgGetNode("/position/latitude-deg", true)),
85 alt_node(fgGetNode("/position/altitude-ft", true)),
108 SGPath path( globals->get_fg_root() );
110 term.append( "Navaids/range.term" );
112 low.append( "Navaids/range.low" );
114 high.append( "Navaids/range.high" );
116 term_tbl = new SGInterpTable( term.str() );
117 low_tbl = new SGInterpTable( low.str() );
118 high_tbl = new SGInterpTable( high.str() );
119 dme_last_time.stamp();
124 FGRadioStack::~FGRadioStack()
126 unbind(); // FIXME: should be called externally
135 FGRadioStack::init ()
142 update(1); // FIXME: use dt
144 // Search radio database once per second
145 global_events.Register( "fgRadioSearch()",
146 boost::bind( &FGRadioStack::search,
152 FGRadioStack::bind ()
155 fgTie("/radios/comm[0]/frequencies/selected-mhz", this,
156 &FGRadioStack::get_comm1_freq, &FGRadioStack::set_comm1_freq);
157 fgSetArchivable("/radios/comm[0]/frequencies/selected-mhz");
158 fgTie("/radios/comm[0]/frequencies/standby-mhz", this,
159 &FGRadioStack::get_comm1_alt_freq, &FGRadioStack::set_comm1_alt_freq);
160 fgSetArchivable("/radios/comm[0]/frequencies/standby-mhz");
161 fgTie("/radios/comm[0]/volume", this,
162 &FGRadioStack::get_comm1_vol_btn,
163 &FGRadioStack::set_comm1_vol_btn);
164 fgSetArchivable("/radios/comm[0]/volume");
165 fgTie("/radios/comm[0]/ident", this,
166 &FGRadioStack::get_comm1_ident_btn,
167 &FGRadioStack::set_comm1_ident_btn);
168 fgSetArchivable("/radios/comm[0]/ident");
170 fgTie("/radios/comm[1]/frequencies/selected-mhz", this,
171 &FGRadioStack::get_comm2_freq, &FGRadioStack::set_comm2_freq);
172 fgSetArchivable("/radios/comm[0]/frequencies/selected-mhz");
173 fgTie("/radios/comm[1]/frequencies/standby-mhz", this,
174 &FGRadioStack::get_comm2_alt_freq, &FGRadioStack::set_comm2_alt_freq);
175 fgSetArchivable("/radios/comm[0]/frequencies/standby-mhz");
176 fgTie("/radios/comm[1]/volume", this,
177 &FGRadioStack::get_comm2_vol_btn,
178 &FGRadioStack::set_comm2_vol_btn);
179 fgSetArchivable("/radios/comm[0]/volume");
180 fgTie("/radios/comm[1]/ident", this,
181 &FGRadioStack::get_comm2_ident_btn,
182 &FGRadioStack::set_comm2_ident_btn);
183 fgSetArchivable("/radios/comm[1]/ident");
185 fgTie("/radios/nav[0]/frequencies/selected-mhz", this,
186 &FGRadioStack::get_nav1_freq, &FGRadioStack::set_nav1_freq);
187 fgSetArchivable("/radios/nav[0]/frequencies/selected-mhz");
188 fgTie("/radios/nav[0]/frequencies/standby-mhz", this,
189 &FGRadioStack::get_nav1_alt_freq, &FGRadioStack::set_nav1_alt_freq);
190 fgSetArchivable("/radios/nav[0]/frequencies/standby-mhz");
191 fgTie("/radios/nav[0]/radials/selected-deg", this,
192 &FGRadioStack::get_nav1_sel_radial,
193 &FGRadioStack::set_nav1_sel_radial);
194 fgSetArchivable("/radios/nav[0]/radials/selected-deg");
195 fgTie("/radios/nav[0]/volume", this,
196 &FGRadioStack::get_nav1_vol_btn,
197 &FGRadioStack::set_nav1_vol_btn);
198 fgSetArchivable("/radios/nav[0]/volume");
199 fgTie("/radios/nav[0]/ident", this,
200 &FGRadioStack::get_nav1_ident_btn,
201 &FGRadioStack::set_nav1_ident_btn);
202 fgSetArchivable("/radios/nav[0]/ident");
205 fgTie("/radios/nav[0]/radials/actual-deg", this,
206 &FGRadioStack::get_nav1_radial);
207 fgTie("/radios/nav[0]/to-flag", this, &FGRadioStack::get_nav1_to_flag);
208 fgTie("/radios/nav[0]/from-flag", this, &FGRadioStack::get_nav1_from_flag);
209 fgTie("/radios/nav[0]/in-range", this, &FGRadioStack::get_nav1_inrange);
210 fgTie("/radios/nav[0]/heading-needle-deflection", this,
211 &FGRadioStack::get_nav1_heading_needle_deflection);
212 fgTie("/radios/nav[0]/gs-needle-deflection", this,
213 &FGRadioStack::get_nav1_gs_needle_deflection);
216 fgTie("/radios/nav[1]/frequencies/selected-mhz", this,
217 &FGRadioStack::get_nav2_freq, &FGRadioStack::set_nav2_freq);
218 fgSetArchivable("/radios/nav[1]/frequencies/selected-mhz");
219 fgTie("/radios/nav[1]/frequencies/standby-mhz", this,
220 &FGRadioStack::get_nav2_alt_freq, &FGRadioStack::set_nav2_alt_freq);
221 fgSetArchivable("/radios/nav[1]/frequencies/standby-mhz");
222 fgTie("/radios/nav[1]/radials/selected-deg", this,
223 &FGRadioStack::get_nav2_sel_radial,
224 &FGRadioStack::set_nav2_sel_radial);
225 fgSetArchivable("/radios/nav[1]/radials/selected-deg");
226 fgTie("/radios/nav[1]/volume", this,
227 &FGRadioStack::get_nav2_vol_btn,
228 &FGRadioStack::set_nav2_vol_btn);
229 fgSetArchivable("/radios/nav[1]/volume");
230 fgTie("/radios/nav[1]/ident", this,
231 &FGRadioStack::get_nav2_ident_btn,
232 &FGRadioStack::set_nav2_ident_btn);
233 fgSetArchivable("/radios/nav[1]/ident");
236 fgTie("/radios/nav[1]/radials/actual-deg", this,
237 &FGRadioStack::get_nav2_radial);
238 fgTie("/radios/nav[1]/to-flag", this, &FGRadioStack::get_nav2_to_flag);
239 fgTie("/radios/nav[1]/from-flag", this, &FGRadioStack::get_nav2_from_flag);
240 fgTie("/radios/nav[1]/in-range", this, &FGRadioStack::get_nav2_inrange);
241 fgTie("/radios/nav[1]/heading-needle-deflection", this,
242 &FGRadioStack::get_nav2_heading_needle_deflection);
243 fgTie("/radios/nav[1]/gs-needle-deflection", this,
244 &FGRadioStack::get_nav2_gs_needle_deflection);
247 fgTie("/radios/dme/frequencies/selected-khz", this,
248 &FGRadioStack::get_dme_freq, &FGRadioStack::set_dme_freq);
251 fgTie("/radios/dme/in-range", this, &FGRadioStack::get_dme_inrange);
252 fgTie("/radios/dme/distance-nm", this, &FGRadioStack::get_dme_dist);
253 fgTie("/radios/dme/speed-kt", this, &FGRadioStack::get_dme_spd);
254 fgTie("/radios/dme/ete-min", this, &FGRadioStack::get_dme_ete);
257 fgTie("/radios/adf/frequencies/selected-khz", this,
258 &FGRadioStack::get_adf_freq, &FGRadioStack::set_adf_freq);
259 fgSetArchivable("/radios/adf/frequencies/selected-khz");
260 fgTie("/radios/adf/frequencies/standby-khz", this,
261 &FGRadioStack::get_adf_alt_freq, &FGRadioStack::set_adf_alt_freq);
262 fgSetArchivable("/radios/adf/frequencies/standby-khz");
263 fgTie("/radios/adf/rotation-deg", this,
264 &FGRadioStack::get_adf_rotation, &FGRadioStack::set_adf_rotation);
265 fgSetArchivable("/radios/adf/rotation-deg");
266 fgTie("/radios/adf/volume", this,
267 &FGRadioStack::get_adf_vol_btn,
268 &FGRadioStack::set_adf_vol_btn);
269 fgSetArchivable("/radios/adf/volume");
270 fgTie("/radios/adf/ident", this,
271 &FGRadioStack::get_adf_ident_btn,
272 &FGRadioStack::set_adf_ident_btn);
273 fgSetArchivable("/radios/adf/ident");
275 fgTie("/radios/marker-beacon/inner", this,
276 &FGRadioStack::get_inner_blink);
277 fgTie("/radios/marker-beacon/middle", this,
278 &FGRadioStack::get_middle_blink);
279 fgTie("/radios/marker-beacon/outer", this,
280 &FGRadioStack::get_outer_blink);
284 FGRadioStack::unbind ()
286 fgUntie("/radios/comm[0]/frequencies/selected-mhz");
287 fgUntie("/radios/comm[0]/frequencies/standby-mhz");
288 fgUntie("/radios/comm[0]/on");
289 fgUntie("/radios/comm[0]/ident");
291 fgUntie("/radios/comm[1]/frequencies/selected-mhz");
292 fgUntie("/radios/comm[1]/frequencies/standby-mhz");
293 fgUntie("/radios/comm[1]/on");
294 fgUntie("/radios/comm[1]/ident");
296 fgUntie("/radios/nav[0]/frequencies/selected-mhz");
297 fgUntie("/radios/nav[0]/frequencies/standby-mhz");
298 fgUntie("/radios/nav[0]/radials/actual-deg");
299 fgUntie("/radios/nav[0]/radials/selected-deg");
300 fgUntie("/radios/nav[0]/on");
301 fgUntie("/radios/nav[0]/ident");
302 fgUntie("/radios/nav[0]/to-flag");
303 fgUntie("/radios/nav[0]/from-flag");
304 fgUntie("/radios/nav[0]/in-range");
305 fgUntie("/radios/nav[0]/heading-needle-deflection");
306 fgUntie("/radios/nav[0]/gs-needle-deflection");
308 fgUntie("/radios/nav[1]/frequencies/selected-mhz");
309 fgUntie("/radios/nav[1]/frequencies/standby-mhz");
310 fgUntie("/radios/nav[1]/radials/actual-deg");
311 fgUntie("/radios/nav[1]/radials/selected-deg");
312 fgUntie("/radios/nav[1]/on");
313 fgUntie("/radios/nav[1]/ident");
314 fgUntie("/radios/nav[1]/to-flag");
315 fgUntie("/radios/nav[1]/from-flag");
316 fgUntie("/radios/nav[1]/in-range");
317 fgUntie("/radios/nav[1]/heading-needle-deflection");
318 fgUntie("/radios/nav[1]/gs-needle-deflection");
320 fgUntie("/radios/dme/frequencies/selected-khz");
323 fgUntie("/radios/dme/in-range");
324 fgUntie("/radios/dme/distance-nm");
325 fgUntie("/radios/dme/speed-kt");
326 fgUntie("/radios/dme/ete-min");
328 fgUntie("/radios/adf/frequencies/selected-khz");
329 fgUntie("/radios/adf/frequencies/standby-khz");
330 fgUntie("/radios/adf/rotation-deg");
331 fgUntie("/radios/adf/on");
332 fgUntie("/radios/adf/ident");
334 fgUntie("/radios/marker-beacon/inner");
335 fgUntie("/radios/marker-beacon/middle");
336 fgUntie("/radios/marker-beacon/outer");
340 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
341 double FGRadioStack::adjustNavRange( double stationElev, double aircraftElev,
342 double nominalRange )
344 // extend out actual usable range to be 1.3x the published safe range
345 const double usability_factor = 1.3;
347 // assumptions we model the standard service volume, plus
348 // ... rather than specifying a cylinder, we model a cone that
349 // contains the cylinder. Then we put an upside down cone on top
350 // to model diminishing returns at too-high altitudes.
352 // altitude difference
353 double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
354 // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
355 // << " station elev = " << stationElev << endl;
357 if ( nominalRange < 25.0 + SG_EPSILON ) {
358 // Standard Terminal Service Volume
359 return term_tbl->interpolate( alt ) * usability_factor;
360 } else if ( nominalRange < 50.0 + SG_EPSILON ) {
361 // Standard Low Altitude Service Volume
362 // table is based on range of 40, scale to actual range
363 return low_tbl->interpolate( alt ) * nominalRange / 40.0
366 // Standard High Altitude Service Volume
367 // table is based on range of 130, scale to actual range
368 return high_tbl->interpolate( alt ) * nominalRange / 130.0
374 // model standard ILS service volumes as per AIM 1-1-9
375 double FGRadioStack::adjustILSRange( double stationElev, double aircraftElev,
376 double offsetDegrees, double distance )
378 // assumptions we model the standard service volume, plus
380 // altitude difference
381 // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
382 double offset = fabs( offsetDegrees );
385 return FG_ILS_DEFAULT_RANGE;
386 } else if ( offset < 35 ) {
387 return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
388 } else if ( offset < 45 ) {
389 return (45 - offset);
390 } else if ( offset > 170 ) {
391 return FG_ILS_DEFAULT_RANGE;
392 } else if ( offset > 145 ) {
393 return 10 + (offset - 145) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
394 } else if ( offset > 135 ) {
395 return (offset - 135);
402 // Update the various nav values based on position and valid tuned in navs
404 FGRadioStack::update(int dt)
406 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
407 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
408 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
412 Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
416 ////////////////////////////////////////////////////////////////////////
418 ////////////////////////////////////////////////////////////////////////
421 station = Point3D( nav1_x, nav1_y, nav1_z );
422 nav1_loc_dist = aircraft.distance3D( station );
425 station = Point3D( nav1_gs_x, nav1_gs_y, nav1_gs_z );
426 nav1_gs_dist = aircraft.distance3D( station );
432 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
433 nav1_loclat, nav1_loclon,
435 // cout << "az1 = " << az1 << " magvar = " << nav1_magvar << endl;
436 nav1_heading = az1 - nav1_magvar;
437 // cout << " heading = " << nav1_heading
438 // << " dist = " << nav1_dist << endl;
441 double offset = nav1_heading - nav1_radial;
442 while ( offset < -180.0 ) { offset += 360.0; }
443 while ( offset > 180.0 ) { offset -= 360.0; }
444 // cout << "ils offset = " << offset << endl;
445 nav1_effective_range = adjustILSRange(nav1_elev, elev, offset,
446 nav1_loc_dist * SG_METER_TO_NM );
448 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
450 // cout << "nav1 range = " << nav1_effective_range
451 // << " (" << nav1_range << ")" << endl;
453 if ( nav1_loc_dist < nav1_effective_range * SG_NM_TO_METER ) {
455 } else if ( nav1_loc_dist < 2 * nav1_effective_range * SG_NM_TO_METER ) {
456 nav1_inrange = sg_random() <
457 ( 2 * nav1_effective_range * SG_NM_TO_METER - nav1_loc_dist ) /
458 (nav1_effective_range * SG_NM_TO_METER);
460 nav1_inrange = false;
464 nav1_radial = nav1_sel_radial;
467 nav1_inrange = false;
468 // cout << "not picking up vor. :-(" << endl;
471 #ifdef ENABLE_AUDIO_SUPPORT
472 if ( nav1_valid && nav1_inrange ) {
473 // play station ident via audio system if on + ident,
474 // otherwise turn it off
475 if ( nav1_vol_btn > 0.1 && nav1_ident_btn ) {
476 FGSimpleSound *sound;
477 sound = globals->get_soundmgr()->find( "nav1-vor-ident" );
478 sound->set_volume( nav1_vol_btn * 0.3 );
479 sound = globals->get_soundmgr()->find( "nav1-dme-ident" );
480 sound->set_volume( nav1_vol_btn * 0.3 );
481 if ( nav1_last_time <
482 globals->get_time_params()->get_cur_time() - 30 ) {
483 nav1_last_time = globals->get_time_params()->get_cur_time();
486 if ( nav1_play_count < 4 ) {
488 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") ) {
489 globals->get_soundmgr()->play_once( "nav1-vor-ident" );
492 } else if ( nav1_play_count < 5 && nav1_has_dme ) {
494 if ( !globals->get_soundmgr()->is_playing("nav1-vor-ident") &&
495 !globals->get_soundmgr()->is_playing("nav1-dme-ident") ) {
496 globals->get_soundmgr()->play_once( "nav1-dme-ident" );
501 globals->get_soundmgr()->stop( "nav1-vor-ident" );
502 globals->get_soundmgr()->stop( "nav1-dme-ident" );
508 ////////////////////////////////////////////////////////////////////////
510 ////////////////////////////////////////////////////////////////////////
513 station = Point3D( nav2_x, nav2_y, nav2_z );
514 nav2_loc_dist = aircraft.distance3D( station );
517 station = Point3D( nav2_gs_x, nav2_gs_y, nav2_gs_z );
518 nav2_gs_dist = aircraft.distance3D( station );
524 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
525 nav2_loclat, nav2_loclon,
527 nav2_heading = az1 - nav2_magvar;
528 // cout << " heading = " << nav2_heading
529 // << " dist = " << nav2_dist << endl;
532 double offset = nav2_heading - nav2_radial;
533 while ( offset < -180.0 ) { offset += 360.0; }
534 while ( offset > 180.0 ) { offset -= 360.0; }
535 // cout << "ils offset = " << offset << endl;
536 nav2_effective_range = adjustILSRange(nav2_elev, elev, offset,
537 nav2_loc_dist * SG_METER_TO_NM );
539 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
541 // cout << "nav2 range = " << nav2_effective_range
542 // << " (" << nav2_range << ")" << endl;
544 if ( nav2_loc_dist < nav2_effective_range * SG_NM_TO_METER ) {
546 } else if ( nav2_loc_dist < 2 * nav2_effective_range * SG_NM_TO_METER ) {
547 nav2_inrange = sg_random() <
548 ( 2 * nav2_effective_range * SG_NM_TO_METER - nav2_loc_dist ) /
549 (nav2_effective_range * SG_NM_TO_METER);
551 nav2_inrange = false;
555 nav2_radial = nav2_sel_radial;
558 nav2_inrange = false;
559 // cout << "not picking up vor. :-(" << endl;
562 #ifdef ENABLE_AUDIO_SUPPORT
563 if ( nav2_valid && nav2_inrange ) {
564 // play station ident via audio system if on + ident,
565 // otherwise turn it off
566 if ( nav2_vol_btn > 0.1 && nav2_ident_btn ) {
567 FGSimpleSound *sound;
568 sound = globals->get_soundmgr()->find( "nav2-vor-ident" );
569 sound->set_volume( nav2_vol_btn * 0.3 );
570 sound = globals->get_soundmgr()->find( "nav2-dme-ident" );
571 sound->set_volume( nav2_vol_btn * 0.3 );
572 if ( nav2_last_time <
573 globals->get_time_params()->get_cur_time() - 30 ) {
574 nav2_last_time = globals->get_time_params()->get_cur_time();
577 if ( nav2_play_count < 4 ) {
579 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") ) {
580 globals->get_soundmgr()->play_once( "nav2-vor-ident" );
583 } else if ( nav2_play_count < 5 && nav2_has_dme ) {
585 if ( !globals->get_soundmgr()->is_playing("nav2-vor-ident") &&
586 !globals->get_soundmgr()->is_playing("nav2-dme-ident") ) {
587 globals->get_soundmgr()->play_once( "nav2-dme-ident" );
592 globals->get_soundmgr()->stop( "nav2-vor-ident" );
593 globals->get_soundmgr()->stop( "nav2-dme-ident" );
599 ////////////////////////////////////////////////////////////////////////
601 ////////////////////////////////////////////////////////////////////////
604 station = Point3D( dme_x, dme_y, dme_z );
605 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
606 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
607 if (dme_dist < dme_effective_range * SG_NM_TO_METER) {
609 } else if (dme_dist < 2 * dme_effective_range * SG_NM_TO_METER) {
610 dme_inrange = sg_random() <
611 (2 * dme_effective_range * SG_NM_TO_METER - dme_dist) /
612 (dme_effective_range * SG_NM_TO_METER);
617 SGTimeStamp current_time;
618 station = Point3D( dme_x, dme_y, dme_z );
619 dme_dist = aircraft.distance3D( station ) * SG_METER_TO_NM;
620 current_time.stamp();
621 long dMs = (current_time - dme_last_time) / 1000;
622 // Update every second
624 double dDist = dme_dist - dme_prev_dist;
625 dme_spd = fabs((dDist/dMs) * 3600000);
626 // FIXME: the panel should be able to
630 dme_ete = fabs((dme_dist/dme_spd) * 60.0);
631 // FIXME: the panel should be able to
635 dme_prev_dist = dme_dist;
636 dme_last_time.stamp();
646 ////////////////////////////////////////////////////////////////////////
648 ////////////////////////////////////////////////////////////////////////
651 // staightline distance
652 station = Point3D( adf_x, adf_y, adf_z );
653 adf_dist = aircraft.distance3D( station );
656 geo_inverse_wgs_84( elev, lat * SGD_RADIANS_TO_DEGREES, lon * SGD_RADIANS_TO_DEGREES,
660 // cout << " heading = " << nav2_heading
661 // << " dist = " << nav2_dist << endl;
663 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
664 if ( adf_dist < adf_effective_range * SG_NM_TO_METER ) {
666 } else if ( adf_dist < 2 * adf_effective_range * SG_NM_TO_METER ) {
667 adf_inrange = sg_random() <
668 ( 2 * adf_effective_range * SG_NM_TO_METER - adf_dist ) /
669 (adf_effective_range * SG_NM_TO_METER);
677 #ifdef ENABLE_AUDIO_SUPPORT
678 if ( adf_valid && adf_inrange ) {
679 // play station ident via audio system if on + ident,
680 // otherwise turn it off
681 if ( adf_vol_btn > 0.1 && adf_ident_btn ) {
682 FGSimpleSound *sound;
683 sound = globals->get_soundmgr()->find( "adf-ident" );
684 sound->set_volume( adf_vol_btn * 0.3 );
686 globals->get_time_params()->get_cur_time() - 30 ) {
687 adf_last_time = globals->get_time_params()->get_cur_time();
690 if ( adf_play_count < 4 ) {
692 if ( !globals->get_soundmgr()->is_playing("adf-ident") ) {
693 globals->get_soundmgr()->play_once( "adf-ident" );
698 globals->get_soundmgr()->stop( "adf-ident" );
703 // marker beacon blinking
704 bool light_on = ( outer_blink || middle_blink || inner_blink );
708 if ( light_on && (current - blink > 400000) ) {
711 } else if ( !light_on && (current - blink > 100000) ) {
716 if ( outer_marker ) {
717 outer_blink = light_on;
722 if ( middle_marker ) {
723 middle_blink = light_on;
725 middle_blink = false;
728 if ( inner_marker ) {
729 inner_blink = light_on;
734 // cout << outer_blink << " " << middle_blink << " " << inner_blink << endl;
738 // Update current nav/adf radio stations based on current postition
739 void FGRadioStack::search()
741 static FGMkrBeacon::fgMkrBeacType last_beacon = FGMkrBeacon::NOBEACON;
743 double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
744 double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
745 double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
747 // FIXME: the panel should handle this
748 // don't worry about overhead for now,
749 // since this is handled only periodically
750 int dme_switch_pos = fgGetInt("/radios/dme/switch-position");
751 if (dme_switch_pos == 0) {
754 } else if (dme_switch_pos == 1) {
755 if (dme_freq != nav1_freq) {
756 dme_freq = nav1_freq;
759 } else if (dme_switch_pos == 3) {
760 if (dme_freq != nav2_freq) {
761 dme_freq = nav2_freq;
769 static string last_nav1_ident = "";
770 static string last_nav2_ident = "";
771 static string last_adf_ident = "";
772 static bool last_nav1_vor = false;
773 static bool last_nav2_vor = false;
775 ////////////////////////////////////////////////////////////////////////
777 ////////////////////////////////////////////////////////////////////////
779 if ( current_ilslist->query( lon, lat, elev, nav1_freq, &ils ) ) {
780 nav1_ident = ils.get_locident();
782 if ( last_nav1_ident != nav1_ident || last_nav1_vor ) {
783 nav1_trans_ident = ils.get_trans_ident();
784 last_nav1_ident = nav1_ident;
785 last_nav1_vor = false;
787 nav1_has_dme = ils.get_has_dme();
788 nav1_has_gs = ils.get_has_gs();
790 nav1_loclon = ils.get_loclon();
791 nav1_loclat = ils.get_loclat();
792 nav1_gslon = ils.get_gslon();
793 nav1_gslat = ils.get_gslat();
794 nav1_elev = ils.get_gselev();
796 nav1_range = FG_ILS_DEFAULT_RANGE;
797 nav1_effective_range = nav1_range;
798 nav1_target_gs = ils.get_gsangle();
799 nav1_radial = ils.get_locheading();
800 while ( nav1_radial < 0.0 ) { nav1_radial += 360.0; }
801 while ( nav1_radial > 360.0 ) { nav1_radial -= 360.0; }
802 nav1_x = ils.get_x();
803 nav1_y = ils.get_y();
804 nav1_z = ils.get_z();
805 nav1_gs_x = ils.get_gs_x();
806 nav1_gs_y = ils.get_gs_y();
807 nav1_gs_z = ils.get_gs_z();
809 #ifdef ENABLE_AUDIO_SUPPORT
810 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
811 globals->get_soundmgr()->remove( "nav1-vor-ident" );
813 FGSimpleSound *sound;
814 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
815 sound->set_volume( 0.3 );
816 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
818 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
819 globals->get_soundmgr()->remove( "nav1-dme-ident" );
821 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
822 sound->set_volume( 0.3 );
823 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
825 int offset = (int)(sg_random() * 30.0);
826 nav1_play_count = offset / 4;
827 nav1_last_time = globals->get_time_params()->get_cur_time() -
829 // cout << "offset = " << offset << " play_count = "
830 // << nav1_play_count
831 // << " nav1_last_time = " << nav1_last_time
832 // << " current time = "
833 // << globals->get_time_params()->get_cur_time() << endl;
836 // cout << "Found an ils station in range" << endl;
837 // cout << " id = " << ils.get_locident() << endl;
839 } else if ( current_navlist->query( lon, lat, elev, nav1_freq, &nav ) ) {
840 nav1_ident = nav.get_ident();
842 if ( last_nav1_ident != nav1_ident || !last_nav1_vor ) {
843 last_nav1_ident = nav1_ident;
844 last_nav1_vor = true;
845 nav1_trans_ident = nav.get_trans_ident();
847 nav1_has_dme = nav.get_has_dme();
849 nav1_loclon = nav.get_lon();
850 nav1_loclat = nav.get_lat();
851 nav1_elev = nav.get_elev();
852 nav1_magvar = nav.get_magvar();
853 nav1_range = nav.get_range();
854 nav1_effective_range = adjustNavRange(nav1_elev, elev, nav1_range);
855 nav1_target_gs = 0.0;
856 nav1_radial = nav1_sel_radial;
857 nav1_x = nav.get_x();
858 nav1_y = nav.get_y();
859 nav1_z = nav.get_z();
861 #ifdef ENABLE_AUDIO_SUPPORT
862 if ( globals->get_soundmgr()->exists( "nav1-vor-ident" ) ) {
863 globals->get_soundmgr()->remove( "nav1-vor-ident" );
865 FGSimpleSound *sound;
866 sound = morse.make_ident( nav1_trans_ident, LO_FREQUENCY );
867 sound->set_volume( 0.3 );
868 globals->get_soundmgr()->add( sound, "nav1-vor-ident" );
870 if ( globals->get_soundmgr()->exists( "nav1-dme-ident" ) ) {
871 globals->get_soundmgr()->remove( "nav1-dme-ident" );
873 sound = morse.make_ident( nav1_trans_ident, HI_FREQUENCY );
874 sound->set_volume( 0.3 );
875 globals->get_soundmgr()->add( sound, "nav1-dme-ident" );
877 int offset = (int)(sg_random() * 30.0);
878 nav1_play_count = offset / 4;
879 nav1_last_time = globals->get_time_params()->get_cur_time() -
881 // cout << "offset = " << offset << " play_count = "
882 // << nav1_play_count << " nav1_last_time = "
883 // << nav1_last_time << " current time = "
884 // << globals->get_time_params()->get_cur_time() << endl;
887 // cout << "Found a vor station in range" << endl;
888 // cout << " id = " << nav.get_ident() << endl;
894 nav1_trans_ident = "";
895 last_nav1_ident = "";
896 #ifdef ENABLE_AUDIO_SUPPORT
897 globals->get_soundmgr()->remove( "nav1-vor-ident" );
898 globals->get_soundmgr()->remove( "nav1-dme-ident" );
900 // cout << "not picking up vor1. :-(" << endl;
904 ////////////////////////////////////////////////////////////////////////
906 ////////////////////////////////////////////////////////////////////////
908 if ( current_ilslist->query( lon, lat, elev, nav2_freq, &ils ) ) {
909 nav2_ident = ils.get_locident();
911 if ( last_nav2_ident != nav2_ident || last_nav2_vor ) {
912 last_nav2_ident = nav2_ident;
913 last_nav2_vor = false;
914 nav2_trans_ident = ils.get_trans_ident();
916 nav2_has_dme = ils.get_has_dme();
917 nav2_has_gs = ils.get_has_gs();
919 nav2_loclon = ils.get_loclon();
920 nav2_loclat = ils.get_loclat();
921 nav2_elev = ils.get_gselev();
923 nav2_range = FG_ILS_DEFAULT_RANGE;
924 nav2_effective_range = nav2_range;
925 nav2_target_gs = ils.get_gsangle();
926 nav2_radial = ils.get_locheading();
927 while ( nav2_radial < 0.0 ) { nav2_radial += 360.0; }
928 while ( nav2_radial > 360.0 ) { nav2_radial -= 360.0; }
929 nav2_x = ils.get_x();
930 nav2_y = ils.get_y();
931 nav2_z = ils.get_z();
932 nav2_gs_x = ils.get_gs_x();
933 nav2_gs_y = ils.get_gs_y();
934 nav2_gs_z = ils.get_gs_z();
936 #ifdef ENABLE_AUDIO_SUPPORT
937 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
938 globals->get_soundmgr()->remove( "nav2-vor-ident" );
940 FGSimpleSound *sound;
941 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
942 sound->set_volume( 0.3 );
943 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
945 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
946 globals->get_soundmgr()->remove( "nav2-dme-ident" );
948 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
949 sound->set_volume( 0.3 );
950 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
952 int offset = (int)(sg_random() * 30.0);
953 nav2_play_count = offset / 4;
954 nav2_last_time = globals->get_time_params()->get_cur_time() -
956 // cout << "offset = " << offset << " play_count = "
957 // << nav2_play_count << " nav2_last_time = "
958 // << nav2_last_time << " current time = "
959 // << globals->get_time_params()->get_cur_time() << endl;
962 // cout << "Found an ils station in range" << endl;
963 // cout << " id = " << ils.get_locident() << endl;
965 } else if ( current_navlist->query( lon, lat, elev, nav2_freq, &nav ) ) {
966 nav2_ident = nav.get_ident();
968 if ( last_nav2_ident != nav2_ident || !last_nav2_vor ) {
969 last_nav2_ident = nav2_ident;
970 last_nav2_vor = true;
971 nav2_trans_ident = nav.get_trans_ident();
973 nav2_has_dme = nav.get_has_dme();
974 nav2_has_dme = false;
975 nav2_loclon = nav.get_lon();
976 nav2_loclat = nav.get_lat();
977 nav2_elev = nav.get_elev();
978 nav2_magvar = nav.get_magvar();
979 nav2_range = nav.get_range();
980 nav2_effective_range = adjustNavRange(nav2_elev, elev, nav2_range);
981 nav2_target_gs = 0.0;
982 nav2_radial = nav2_sel_radial;
983 nav2_x = nav.get_x();
984 nav2_y = nav.get_y();
985 nav2_z = nav.get_z();
987 #ifdef ENABLE_AUDIO_SUPPORT
988 if ( globals->get_soundmgr()->exists( "nav2-vor-ident" ) ) {
989 globals->get_soundmgr()->remove( "nav2-vor-ident" );
991 FGSimpleSound *sound;
992 sound = morse.make_ident( nav2_trans_ident, LO_FREQUENCY );
993 sound->set_volume( 0.3 );
994 globals->get_soundmgr()->add( sound, "nav2-vor-ident" );
996 if ( globals->get_soundmgr()->exists( "nav2-dme-ident" ) ) {
997 globals->get_soundmgr()->remove( "nav2-dme-ident" );
999 sound = morse.make_ident( nav2_trans_ident, HI_FREQUENCY );
1000 sound->set_volume( 0.3 );
1001 globals->get_soundmgr()->add( sound, "nav2-dme-ident" );
1003 int offset = (int)(sg_random() * 30.0);
1004 nav2_play_count = offset / 4;
1005 nav2_last_time = globals->get_time_params()->get_cur_time() -
1007 // cout << "offset = " << offset << " play_count = "
1008 // << nav2_play_count << " nav2_last_time = "
1009 // << nav2_last_time << " current time = "
1010 // << globals->get_time_params()->get_cur_time() << endl;
1013 // cout << "Found a vor station in range" << endl;
1014 // cout << " id = " << nav.get_ident() << endl;
1020 nav2_trans_ident = "";
1021 last_nav2_ident = "";
1022 #ifdef ENABLE_AUDIO_SUPPORT
1023 globals->get_soundmgr()->remove( "nav2-vor-ident" );
1024 globals->get_soundmgr()->remove( "nav2-dme-ident" );
1026 // cout << "not picking up vor1. :-(" << endl;
1030 ////////////////////////////////////////////////////////////////////////
1032 ////////////////////////////////////////////////////////////////////////
1034 if ( current_ilslist->query( lon, lat, elev, dme_freq, &ils ) ) {
1035 if (ils.get_has_dme()) {
1037 dme_lon = ils.get_loclon();
1038 dme_lat = ils.get_loclat();
1039 dme_elev = ils.get_gselev();
1040 dme_range = FG_ILS_DEFAULT_RANGE;
1041 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
1042 dme_x = ils.get_dme_x();
1043 dme_y = ils.get_dme_y();
1044 dme_z = ils.get_dme_z();
1046 } else if ( current_navlist->query( lon, lat, elev, dme_freq, &nav ) ) {
1047 if (nav.get_has_dme()) {
1049 dme_lon = nav.get_lon();
1050 dme_lat = nav.get_lat();
1051 dme_elev = nav.get_elev();
1052 dme_range = nav.get_range();
1053 dme_effective_range = kludgeRange(dme_elev, elev, dme_range);
1054 dme_x = nav.get_x();
1055 dme_y = nav.get_y();
1056 dme_z = nav.get_z();
1064 ////////////////////////////////////////////////////////////////////////
1066 ////////////////////////////////////////////////////////////////////////
1068 FGMkrBeacon::fgMkrBeacType beacon_type
1069 = current_beacons->query( lon * SGD_RADIANS_TO_DEGREES,
1070 lat * SGD_RADIANS_TO_DEGREES, elev );
1072 outer_marker = middle_marker = inner_marker = false;
1074 if ( beacon_type == FGMkrBeacon::OUTER ) {
1075 outer_marker = true;
1076 // cout << "OUTER MARKER" << endl;
1077 #ifdef ENABLE_AUDIO_SUPPORT
1078 if ( last_beacon != FGMkrBeacon::OUTER ) {
1079 if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
1080 FGSimpleSound *sound = beacon.get_outer();
1081 sound->set_volume( 0.3 );
1082 globals->get_soundmgr()->add( sound, "outer-marker" );
1084 if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
1085 globals->get_soundmgr()->play_looped( "outer-marker" );
1089 } else if ( beacon_type == FGMkrBeacon::MIDDLE ) {
1090 middle_marker = true;
1091 // cout << "MIDDLE MARKER" << endl;
1092 #ifdef ENABLE_AUDIO_SUPPORT
1093 if ( last_beacon != FGMkrBeacon::MIDDLE ) {
1094 if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
1095 FGSimpleSound *sound = beacon.get_middle();
1096 sound->set_volume( 0.3 );
1097 globals->get_soundmgr()->add( sound, "middle-marker" );
1099 if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
1100 globals->get_soundmgr()->play_looped( "middle-marker" );
1104 } else if ( beacon_type == FGMkrBeacon::INNER ) {
1105 inner_marker = true;
1106 // cout << "INNER MARKER" << endl;
1107 #ifdef ENABLE_AUDIO_SUPPORT
1108 if ( last_beacon != FGMkrBeacon::INNER ) {
1109 if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
1110 FGSimpleSound *sound = beacon.get_inner();
1111 sound->set_volume( 0.3 );
1112 globals->get_soundmgr()->add( sound, "inner-marker" );
1114 if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
1115 globals->get_soundmgr()->play_looped( "inner-marker" );
1120 // cout << "no marker" << endl;
1121 #ifdef ENABLE_AUDIO_SUPPORT
1122 globals->get_soundmgr()->stop( "outer-marker" );
1123 globals->get_soundmgr()->stop( "middle-marker" );
1124 globals->get_soundmgr()->stop( "inner-marker" );
1127 last_beacon = beacon_type;
1130 ////////////////////////////////////////////////////////////////////////
1132 ////////////////////////////////////////////////////////////////////////
1134 if ( current_navlist->query( lon, lat, elev, adf_freq, &nav ) ) {
1136 #if defined( _MSC_VER ) || defined(__MINGW32__)
1137 _snprintf( freq, 10, "%.0f", adf_freq );
1139 snprintf( freq, 10, "%.0f", adf_freq );
1142 adf_ident += nav.get_ident();
1143 // cout << "adf ident = " << adf_ident << endl;
1145 if ( last_adf_ident != adf_ident ) {
1146 last_adf_ident = adf_ident;
1148 adf_trans_ident = nav.get_trans_ident();
1149 adf_lon = nav.get_lon();
1150 adf_lat = nav.get_lat();
1151 adf_elev = nav.get_elev();
1152 adf_range = nav.get_range();
1153 adf_effective_range = kludgeRange(adf_elev, elev, adf_range);
1154 adf_x = nav.get_x();
1155 adf_y = nav.get_y();
1156 adf_z = nav.get_z();
1158 #ifdef ENABLE_AUDIO_SUPPORT
1159 if ( globals->get_soundmgr()->exists( "adf-ident" ) ) {
1160 globals->get_soundmgr()->remove( "adf-ident" );
1162 FGSimpleSound *sound;
1163 sound = morse.make_ident( adf_trans_ident, LO_FREQUENCY );
1164 sound->set_volume( 0.3 );
1165 globals->get_soundmgr()->add( sound, "adf-ident" );
1167 int offset = (int)(sg_random() * 30.0);
1168 adf_play_count = offset / 4;
1169 adf_last_time = globals->get_time_params()->get_cur_time() -
1171 // cout << "offset = " << offset << " play_count = "
1172 // << adf_play_count << " adf_last_time = "
1173 // << adf_last_time << " current time = "
1174 // << globals->get_time_params()->get_cur_time() << endl;
1177 // cout << "Found an adf station in range" << endl;
1178 // cout << " id = " << nav.get_ident() << endl;
1183 adf_trans_ident = "";
1184 #ifdef ENABLE_AUDIO_SUPPORT
1185 globals->get_soundmgr()->remove( "adf-ident" );
1187 last_adf_ident = "";
1188 // cout << "not picking up adf. :-(" << endl;
1193 // return the amount of heading needle deflection, returns a value
1194 // clamped to the range of ( -10 , 10 )
1195 double FGRadioStack::get_nav1_heading_needle_deflection() const {
1198 if ( nav1_inrange ) {
1199 r = nav1_heading - nav1_radial;
1200 // cout << "Radial = " << nav1_radial
1201 // << " Bearing = " << nav1_heading << endl;
1203 while ( r > 180.0 ) { r -= 360.0;}
1204 while ( r < -180.0 ) { r += 360.0;}
1205 if ( fabs(r) > 90.0 ) {
1206 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1212 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1213 if ( nav1_loc ) { r *= 4.0; }
1214 if ( r < -10.0 ) { r = -10.0; }
1215 if ( r > 10.0 ) { r = 10.0; }
1223 // return the amount of heading needle deflection, returns a value
1224 // clamped to the range of ( -10 , 10 )
1225 double FGRadioStack::get_nav2_heading_needle_deflection() const {
1228 if ( nav2_inrange ) {
1229 r = nav2_heading - nav2_radial;
1230 // cout << "Radial = " << nav2_radial
1231 // << " Bearing = " << nav2_heading << endl;
1233 while (r> 180.0) r-=360.0;
1234 while (r<-180.0) r+=360.0;
1235 if ( fabs(r) > 90.0 )
1236 r = ( r<0.0 ? -r-180.0 : -r+180.0 );
1237 // According to Robin Peel, the ILS is 4x more sensitive than a vor
1238 if ( nav2_loc ) r *= 4.0;
1239 if ( r < -10.0 ) r = -10.0;
1240 if ( r > 10.0 ) r = 10.0;
1248 // return the amount of glide slope needle deflection (.i.e. the
1249 // number of degrees we are off the glide slope * 5.0
1250 double FGRadioStack::get_nav1_gs_needle_deflection() const {
1251 if ( nav1_inrange && nav1_has_gs ) {
1252 double x = nav1_gs_dist;
1253 double y = (fgGetDouble("/position/altitude-ft") - nav1_elev)
1255 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1256 return (nav1_target_gs - angle) * 5.0;
1263 // return the amount of glide slope needle deflection (.i.e. the
1264 // number of degrees we are off the glide slope * 5.0
1265 double FGRadioStack::get_nav2_gs_needle_deflection() const {
1266 if ( nav2_inrange && nav2_has_gs ) {
1267 double x = nav2_gs_dist;
1268 double y = (fgGetDouble("/position/altitude-ft") - nav2_elev)
1270 double angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
1271 return (nav2_target_gs - angle) * 5.0;
1279 * Return true if the NAV1 TO flag should be active.
1282 FGRadioStack::get_nav1_to_flag () const
1285 double offset = fabs(nav1_heading - nav1_radial);
1289 return (offset <= 90.0 || offset >= 270.0);
1297 * Return true if the NAV1 FROM flag should be active.
1300 FGRadioStack::get_nav1_from_flag () const
1303 double offset = fabs(nav1_heading - nav1_radial);
1307 return (offset > 90.0 && offset < 270.0);
1315 * Return true if the NAV2 TO flag should be active.
1318 FGRadioStack::get_nav2_to_flag () const
1321 double offset = fabs(nav2_heading - nav2_radial);
1325 return (offset <= 90.0 || offset >= 270.0);
1333 * Return true if the NAV2 FROM flag should be active.
1336 FGRadioStack::get_nav2_from_flag () const
1339 double offset = fabs(nav2_heading - nav2_radial);
1343 return (offset > 90.0 && offset < 270.0);