+++ /dev/null
-// kt-70.cxx -- class to impliment the King KT 70 panel-m transponder
-//
-// Written by Curtis Olson, started July 2002.
-//
-// Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdio.h> // snprintf
-
-#include <simgear/compiler.h>
-#include <simgear/math/sg_random.h>
-
-#include <Aircraft/aircraft.hxx>
-
-#include "kt_70.hxx"
-
-
-// Constructor
-FGKT_70::FGKT_70() :
- lon_node(fgGetNode("/position/longitude-deg", true)),
- lat_node(fgGetNode("/position/latitude-deg", true)),
- alt_node(fgGetNode("/position/altitude-ft", true)),
- bus_power(fgGetNode("/systems/electrical/outputs/transponder", true)),
- serviceable_node(fgGetNode("/radios/kt-70/inputs/serviceable", true)),
- r_flash_time(0.0),
- ident_mode(false),
- ident_btn(false),
- last_ident_btn(false),
- digit1(1), digit2(2), digit3(0), digit4(0),
- func_knob(4),
- id_code(1200),
- flight_level(0),
- fl_ann(0),
- alt_ann(0),
- gnd_ann(0),
- on_ann(0),
- sby_ann(0),
- reply_ann(0)
-{
-}
-
-
-// Destructor
-FGKT_70::~FGKT_70() { }
-
-
-void FGKT_70::init () {
-}
-
-
-void FGKT_70::bind () {
- // internal values
-
- // modes
-
- // input and buttons
- fgTie("/radios/kt-70/inputs/ident-btn", this,
- &FGKT_70::get_ident_btn, &FGKT_70::set_ident_btn);
- fgSetArchivable("/radios/kt-70/inputs/rotation-deg");
- fgTie("/radios/kt-70/inputs/digit1", this,
- &FGKT_70::get_digit1, &FGKT_70::set_digit1);
- fgSetArchivable("/radios/kt-70/inputs/digit1");
- fgTie("/radios/kt-70/inputs/digit2", this,
- &FGKT_70::get_digit2, &FGKT_70::set_digit2);
- fgSetArchivable("/radios/kt-70/inputs/digit2");
- fgTie("/radios/kt-70/inputs/digit3", this,
- &FGKT_70::get_digit3, &FGKT_70::set_digit3);
- fgSetArchivable("/radios/kt-70/inputs/digit3");
- fgTie("/radios/kt-70/inputs/digit4", this,
- &FGKT_70::get_digit4, &FGKT_70::set_digit4);
- fgSetArchivable("/radios/kt-70/inputs/digit4");
- fgTie("/radios/kt-70/inputs/func-knob", this,
- &FGKT_70::get_func_knob, &FGKT_70::set_func_knob);
- fgSetArchivable("/radios/kt-70/inputs/func-knob");
-
- // outputs
- fgTie("/radios/kt-70/outputs/id-code", this,
- &FGKT_70::get_id_code, &FGKT_70::set_id_code);
- fgSetArchivable("/radios/kt-70/outputs/id-code");
- fgTie("/radios/kt-70/outputs/flight-level", this,
- &FGKT_70::get_flight_level);
-
- // annunciators
- fgTie("/radios/kt-70/annunciators/fl", this, &FGKT_70::get_fl_ann );
- fgTie("/radios/kt-70/annunciators/alt", this, &FGKT_70::get_alt_ann );
- fgTie("/radios/kt-70/annunciators/gnd", this, &FGKT_70::get_gnd_ann );
- fgTie("/radios/kt-70/annunciators/on", this, &FGKT_70::get_on_ann );
- fgTie("/radios/kt-70/annunciators/sby", this, &FGKT_70::get_sby_ann );
- fgTie("/radios/kt-70/annunciators/reply", this, &FGKT_70::get_reply_ann );
-}
-
-
-void FGKT_70::unbind () {
- // internal values
-
- // modes
-
- // input and buttons
- fgUntie("/radios/kt-70/inputs/ident-btn");
- fgUntie("/radios/kt-70/inputs/digit1");
- fgUntie("/radios/kt-70/inputs/digit2");
- fgUntie("/radios/kt-70/inputs/digit3");
- fgUntie("/radios/kt-70/inputs/digit4");
- fgUntie("/radios/kt-70/inputs/func-knob");
-
- // outputs
- fgUntie("/radios/kt-70/outputs/id-code");
- fgUntie("/radios/kt-70/outputs/flight-level");
-
- // annunciators
- fgUntie("/radios/kt-70/annunciators/fl");
- fgUntie("/radios/kt-70/annunciators/alt");
- fgUntie("/radios/kt-70/annunciators/gnd");
- fgUntie("/radios/kt-70/annunciators/on");
- fgUntie("/radios/kt-70/annunciators/sby");
- fgUntie("/radios/kt-70/annunciators/reply");
-}
-
-
-// Update the various nav values based on position and valid tuned in navs
-void FGKT_70::update( double dt ) {
- // start with all annunciators off (reply ann is handled
- // separately) and then turn on the ones we want
- fl_ann = false;
- alt_ann = false;
- gnd_ann = false;
- on_ann = false;
- sby_ann = false;
- reply_ann = false;
-
- if ( has_power() && serviceable_node->getBoolValue() ) {
- // sanity checks
- if ( digit1 < 0 ) { digit1 = 0; }
- if ( digit1 > 7 ) { digit1 = 7; }
- if ( digit2 < 0 ) { digit2 = 0; }
- if ( digit2 > 7 ) { digit2 = 7; }
- if ( digit3 < 0 ) { digit3 = 0; }
- if ( digit3 > 7 ) { digit3 = 7; }
- if ( digit4 < 0 ) { digit4 = 0; }
- if ( digit4 > 7 ) { digit4 = 7; }
-
- id_code = digit1 * 1000 + digit2 * 100 + digit3 * 10 + digit4;
-
- // flight level computation
-
- // FIXME!!!! This needs to be computed relative to 29.92 inHg,
- // but for the moment, until I figure out how to do that, I'll
- // just use true altitude.
- flight_level = (int)( (alt_node->getDoubleValue() + 50.0) / 100.0);
-
- // ident button
- if ( ident_btn && !last_ident_btn ) {
- // ident button depressed
- r_flash_time = 0.0;
- ident_mode = true;
- }
- r_flash_time += dt;
- if ( r_flash_time > 18.0 ) {
- ident_mode = false;
- }
-
- if ( ident_mode ) {
- reply_ann = true;
- } else {
- reply_ann = false;
- }
-
- if ( func_knob == 1 ) {
- sby_ann = true;
- } else if ( func_knob == 2 ) {
- fl_ann = true;
- alt_ann = true;
- gnd_ann = true;
- on_ann = true;
- sby_ann = true;
- reply_ann = true;
- } else if ( func_knob == 3 ) {
- fl_ann = true;
- gnd_ann = true;
- } else if ( func_knob == 4 ) {
- on_ann = true;
- } else if ( func_knob == 5 ) {
- fl_ann = true;
- alt_ann = true;
- }
- }
-}
+++ /dev/null
-// kt-70.hxx -- class to impliment the King KT 70 panel-m transponder
-//
-// Written by Curtis Olson, started July 2002.
-//
-// Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef _FG_KT_70_HXX
-#define _FG_KT_70_HXX
-
-
-#include <Main/fg_props.hxx>
-
-#include <simgear/compiler.h>
-#include <simgear/structure/subsystem_mgr.hxx>
-#include <simgear/math/interpolater.hxx>
-#include <simgear/timing/timestamp.hxx>
-
-#include <Navaids/navlist.hxx>
-#include <Sound/beacon.hxx>
-#include <Sound/morse.hxx>
-
-
-class FGKT_70 : public SGSubsystem
-{
- SGPropertyNode *lon_node;
- SGPropertyNode *lat_node;
- SGPropertyNode *alt_node;
- SGPropertyNode *bus_power;
- SGPropertyNode *serviceable_node;
-
- // internal values
- double r_flash_time;
-
- // modes
- bool ident_mode; // false = normal, true = ident/squawk
-
- // input and buttons
- bool ident_btn;
- bool last_ident_btn;
- int digit1, digit2, digit3, digit4;
- int func_knob; // 0 = OFF, 1 = SBY, 2 = TST, 3 = GND, 4 = ON,
- // 5 = ALT
-
- // outputs
- int id_code;
- int flight_level;
-
- // annunciators
- bool fl_ann; // flight level
- bool alt_ann; // altitude
- bool gnd_ann; // ground
- bool on_ann; // on
- bool sby_ann; // standby
- bool reply_ann; // reply
-
-public:
-
- FGKT_70();
- ~FGKT_70();
-
- void init ();
- void bind ();
- void unbind ();
- void update (double dt);
- void search () { /* empty placeholder */ }
-
- // internal values
- inline bool has_power() const {
- return (func_knob > 0) && (bus_power->getDoubleValue() > 1.0);
- }
-
- // input and buttons
- inline bool get_ident_btn() const { return ident_btn; }
- inline void set_ident_btn( bool val ) { ident_btn = val; }
- inline int get_digit1() const { return digit1; }
- inline void set_digit1( int val ) { digit1 = val; }
- inline int get_digit2() const { return digit2; }
- inline void set_digit2( int val ) { digit2 = val; }
- inline int get_digit3() const { return digit3; }
- inline void set_digit3( int val ) { digit3 = val; }
- inline int get_digit4() const { return digit4; }
- inline void set_digit4( int val ) { digit4 = val; }
- inline int get_func_knob() const { return func_knob; }
- inline void set_func_knob( int val ) { func_knob = val; }
-
- // outputs
- inline int get_id_code () const { return id_code; }
- inline void set_id_code( int c ) { id_code = c; }
- inline int get_flight_level () const { return flight_level; }
-
- // annunciators
- inline bool get_fl_ann() const { return fl_ann; }
- inline bool get_alt_ann() const { return alt_ann; }
- inline bool get_gnd_ann() const { return gnd_ann; }
- inline bool get_on_ann() const { return on_ann; }
- inline bool get_sby_ann() const { return sby_ann; }
- inline bool get_reply_ann() const { return reply_ann; }
-};
-
-
-#endif // _FG_KT_70_HXX
+++ /dev/null
-// marker_beacon.cxx -- class to manage the marker beacons
-//
-// Written by Curtis Olson, started April 2000.
-//
-// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdio.h> // snprintf
-
-#include <simgear/compiler.h>
-#include <simgear/math/sg_random.h>
-
-#include <Aircraft/aircraft.hxx>
-#include <Navaids/navlist.hxx>
-
-#include "marker_beacon.hxx"
-
-#include <string>
-SG_USING_STD(string);
-
-
-// Constructor
-FGMarkerBeacon::FGMarkerBeacon() :
- lon_node(fgGetNode("/position/longitude-deg", true)),
- lat_node(fgGetNode("/position/latitude-deg", true)),
- alt_node(fgGetNode("/position/altitude-ft", true)),
- bus_power(fgGetNode("/systems/electrical/outputs/navcom[0]", true)),
- power_btn(fgGetNode("/radios/marker-beacon/power-btn", true)),
- audio_btn(fgGetNode("/radios/marker-beacon/audio-btn", true)),
- serviceable(fgGetNode("/instrumentation/marker-beacons/serviceable", true)),
-
- need_update(true),
- outer_blink(false),
- middle_blink(false),
- inner_blink(false)
-{
- SGPath path( globals->get_fg_root() );
- SGPath term = path;
- term.append( "Navaids/range.term" );
- SGPath low = path;
- low.append( "Navaids/range.low" );
- SGPath high = path;
- high.append( "Navaids/range.high" );
-
- term_tbl = new SGInterpTable( term.str() );
- low_tbl = new SGInterpTable( low.str() );
- high_tbl = new SGInterpTable( high.str() );
-
- power_btn->setBoolValue( true );
- audio_btn->setBoolValue( true );
- serviceable->setBoolValue( true );
-}
-
-
-// Destructor
-FGMarkerBeacon::~FGMarkerBeacon()
-{
- delete term_tbl;
- delete low_tbl;
- delete high_tbl;
-}
-
-
-void
-FGMarkerBeacon::init ()
-{
- morse.init();
- beacon.init();
- blink.stamp();
-}
-
-
-void
-FGMarkerBeacon::bind ()
-{
-
- fgTie("/radios/marker-beacon/inner", this,
- &FGMarkerBeacon::get_inner_blink);
-
- fgTie("/radios/marker-beacon/middle", this,
- &FGMarkerBeacon::get_middle_blink);
-
- fgTie("/radios/marker-beacon/outer", this,
- &FGMarkerBeacon::get_outer_blink);
-}
-
-
-void
-FGMarkerBeacon::unbind ()
-{
- fgUntie("/radios/marker-beacon/inner");
- fgUntie("/radios/marker-beacon/middle");
- fgUntie("/radios/marker-beacon/outer");
-}
-
-
-// Update the various nav values based on position and valid tuned in navs
-void
-FGMarkerBeacon::update(double dt)
-{
- need_update = false;
-
- if ( has_power() && serviceable->getBoolValue() ) {
- // marker beacon blinking
- bool light_on = ( outer_blink || middle_blink || inner_blink );
- SGTimeStamp current;
- current.stamp();
-
- if ( light_on && (current - blink > 400000) ) {
- light_on = false;
- blink.stamp();
- } else if ( !light_on && (current - blink > 100000) ) {
- light_on = true;
- blink.stamp();
- }
-
- if ( outer_marker ) {
- outer_blink = light_on;
- } else {
- outer_blink = false;
- }
-
- if ( middle_marker ) {
- middle_blink = light_on;
- } else {
- middle_blink = false;
- }
-
- if ( inner_marker ) {
- inner_blink = light_on;
- } else {
- inner_blink = false;
- }
-
- // cout << outer_blink << " " << middle_blink << " "
- // << inner_blink << endl;
- } else {
- inner_blink = middle_blink = outer_blink = false;
- }
-}
-
-
-static bool check_beacon_range( double lon_rad, double lat_rad, double elev_m,
- FGNavRecord *b )
-{
- Point3D aircraft = sgGeodToCart( Point3D(lon_rad, lat_rad, elev_m) );
- Point3D station = Point3D( b->get_x(), b->get_y(), b->get_z() );
- // cout << " aircraft = " << aircraft << " station = " << station
- // << endl;
-
- double d = aircraft.distance3Dsquared( station ); // meters^2
- // cout << " distance = " << d << " ("
- // << FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
- // * FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
- // << ")" << endl;
-
- // cout << " range = " << sqrt(d) << endl;
-
- // cout << "elev = " << elev * SG_METER_TO_FEET
- // << " current->get_elev() = " << current->get_elev() << endl;
- double elev_ft = elev_m * SG_METER_TO_FEET;
- double delev = elev_ft - b->get_elev_ft();
-
- // max range is the area under r = 2.4 * alt or r^2 = 4000^2 - alt^2
- // whichever is smaller. The intersection point is 1538 ...
- double maxrange2; // feet^2
- if ( delev < 1538.0 ) {
- maxrange2 = 2.4 * 2.4 * delev * delev;
- } else if ( delev < 4000.0 ) {
- maxrange2 = 4000 * 4000 - delev * delev;
- } else {
- maxrange2 = 0.0;
- }
- maxrange2 *= SG_FEET_TO_METER * SG_FEET_TO_METER; // convert to meter^2
- // cout << "delev = " << delev << " maxrange = " << maxrange << endl;
-
- // match up to twice the published range so we can model
- // reduced signal strength
- if ( d < maxrange2 ) {
- return true;
- } else {
- return false;
- }
-}
-
-// Update current nav/adf radio stations based on current postition
-void FGMarkerBeacon::search()
-{
- static fgMkrBeacType last_beacon = NOBEACON;
-
- double lon_rad = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double lat_rad = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
- double elev_m = alt_node->getDoubleValue() * SG_FEET_TO_METER;
-
- ////////////////////////////////////////////////////////////////////////
- // Beacons.
- ////////////////////////////////////////////////////////////////////////
-
- // get closest marker beacon
- FGNavRecord *b
- = globals->get_mkrlist()->findClosest( lon_rad, lat_rad, elev_m );
-
- // cout << "marker beacon = " << b << " (" << b->get_type() << ")" << endl;
-
- fgMkrBeacType beacon_type = NOBEACON;
- bool inrange = false;
- if ( b != NULL ) {
- if ( b->get_type() == 7 ) {
- beacon_type = OUTER;
- } else if ( b->get_type() == 8 ) {
- beacon_type = MIDDLE;
- } else if ( b->get_type() == 9 ) {
- beacon_type = INNER;
- }
- inrange = check_beacon_range( lon_rad, lat_rad, elev_m, b );
- // cout << " inrange = " << inrange << endl;
- }
-
- outer_marker = middle_marker = inner_marker = false;
-
- if ( b == NULL || !inrange || !has_power() || !serviceable->getBoolValue() )
- {
- // cout << "no marker" << endl;
- globals->get_soundmgr()->stop( "outer-marker" );
- globals->get_soundmgr()->stop( "middle-marker" );
- globals->get_soundmgr()->stop( "inner-marker" );
- } else if ( beacon_type == OUTER ) {
- outer_marker = true;
- // cout << "OUTER MARKER" << endl;
- if ( last_beacon != OUTER ) {
- if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
- SGSoundSample *sound = beacon.get_outer();
- sound->set_volume( 0.3 );
- globals->get_soundmgr()->add( sound, "outer-marker" );
- }
- }
- if ( audio_btn->getBoolValue() ) {
- if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
- globals->get_soundmgr()->play_looped( "outer-marker" );
- }
- } else {
- globals->get_soundmgr()->stop( "outer-marker" );
- }
- } else if ( beacon_type == MIDDLE ) {
- middle_marker = true;
- // cout << "MIDDLE MARKER" << endl;
- if ( last_beacon != MIDDLE ) {
- if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
- SGSoundSample *sound = beacon.get_middle();
- sound->set_volume( 0.3 );
- globals->get_soundmgr()->add( sound, "middle-marker" );
- }
- }
- if ( audio_btn->getBoolValue() ) {
- if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
- globals->get_soundmgr()->play_looped( "middle-marker" );
- }
- } else {
- globals->get_soundmgr()->stop( "middle-marker" );
- }
- } else if ( beacon_type == INNER ) {
- inner_marker = true;
- // cout << "INNER MARKER" << endl;
- if ( last_beacon != INNER ) {
- if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
- SGSoundSample *sound = beacon.get_inner();
- sound->set_volume( 0.3 );
- globals->get_soundmgr()->add( sound, "inner-marker" );
- }
- }
- if ( audio_btn->getBoolValue() ) {
- if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
- globals->get_soundmgr()->play_looped( "inner-marker" );
- }
- } else {
- globals->get_soundmgr()->stop( "inner-marker" );
- }
- }
-
- if ( inrange ) {
- last_beacon = beacon_type;
- } else {
- last_beacon = NOBEACON;
- }
-}
+++ /dev/null
-// marker_beacon.hxx -- class to manage the marker beacons
-//
-// Written by Curtis Olson, started April 2000.
-//
-// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef _FG_MARKER_BEACON_HXX
-#define _FG_MARKER_BEACON_HXX
-
-
-#include <Main/fg_props.hxx>
-
-#include <simgear/compiler.h>
-#include <simgear/structure/subsystem_mgr.hxx>
-#include <simgear/math/interpolater.hxx>
-#include <simgear/timing/timestamp.hxx>
-
-#include <Sound/beacon.hxx>
-#include <Sound/morse.hxx>
-
-
-class FGMarkerBeacon : public SGSubsystem
-{
- FGBeacon beacon;
- FGMorse morse;
-
- SGInterpTable *term_tbl;
- SGInterpTable *low_tbl;
- SGInterpTable *high_tbl;
-
- SGPropertyNode *lon_node;
- SGPropertyNode *lat_node;
- SGPropertyNode *alt_node;
- SGPropertyNode *bus_power;
- SGPropertyNode *power_btn;
- SGPropertyNode *audio_btn;
- SGPropertyNode *serviceable;
-
- bool need_update;
-
- bool outer_marker;
- bool middle_marker;
- bool inner_marker;
-
- SGTimeStamp blink;
- bool outer_blink;
- bool middle_blink;
- bool inner_blink;
-
-public:
-
- enum fgMkrBeacType {
- NOBEACON = 0,
- INNER,
- MIDDLE,
- OUTER
- };
-
- FGMarkerBeacon();
- ~FGMarkerBeacon();
-
- void init ();
- void bind ();
- void unbind ();
- void update (double dt);
-
- // Update nav/adf radios based on current postition
- void search ();
-
- // Marker Beacon Accessors
- inline bool get_inner_blink () const { return inner_blink; }
- inline bool get_middle_blink () const { return middle_blink; }
- inline bool get_outer_blink () const { return outer_blink; }
- inline bool has_power() const {
- return power_btn->getBoolValue() && (bus_power->getDoubleValue() > 1.0);
- }
-};
-
-
-#endif // _FG_MARKER_BEACON_HXX
--- /dev/null
+// kt-70.cxx -- class to impliment the King KT 70 panel-m transponder
+//
+// Written by Curtis Olson, started July 2002.
+//
+// Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <iostream>
+#include <string>
+#include <sstream>
+
+#include <simgear/compiler.h>
+#include <simgear/math/sg_random.h>
+
+#include <Aircraft/aircraft.hxx>
+
+#include "kt_70.hxx"
+
+
+// Constructor
+FGKT_70::FGKT_70(SGPropertyNode *node) :
+ r_flash_time(0.0),
+ ident_mode(false),
+ ident_btn(false),
+ last_ident_btn(false),
+ digit1(1), digit2(2), digit3(0), digit4(0),
+ func_knob(4),
+ id_code(1200),
+ flight_level(0),
+ fl_ann(0),
+ alt_ann(0),
+ gnd_ann(0),
+ on_ann(0),
+ sby_ann(0),
+ reply_ann(0),
+ name("kt-70"),
+ num(0)
+{
+ int i;
+ for ( i = 0; i < node->nChildren(); ++i ) {
+ SGPropertyNode *child = node->getChild(i);
+ string cname = child->getName();
+ string cval = child->getStringValue();
+ if ( cname == "name" ) {
+ name = cval;
+ } else if ( cname == "number" ) {
+ num = child->getIntValue();
+ } else {
+ SG_LOG( SG_INSTR, SG_WARN,
+ "Error in kt-70 config logic" );
+ if ( name.length() ) {
+ SG_LOG( SG_INSTR, SG_WARN, "Section = " << name );
+ }
+ }
+ }
+
+}
+
+
+// Destructor
+FGKT_70::~FGKT_70() { }
+
+
+void FGKT_70::init ()
+{
+ string branch;
+ branch = "/instrumentation/" + name;
+
+ SGPropertyNode *node = fgGetNode(branch.c_str(), num, true );
+ // Inputs
+ lon_node = fgGetNode("/position/longitude-deg", true);
+ lat_node = fgGetNode("/position/latitude-deg", true);
+ alt_node = fgGetNode("/position/altitude-ft", true);
+ bus_power = fgGetNode("/systems/electrical/outputs/transponder", true);
+ serviceable_node = (node->getChild("inputs", 0, true))
+ ->getChild("serviceable", 0, true);
+}
+
+
+void FGKT_70::bind () {
+ std::ostringstream temp;
+ string branch;
+ temp << num;
+ branch = "/instrumentation/" + name + "[" + temp.str() + "]";
+ // internal values
+
+ // modes
+
+ // input and buttons
+ fgTie((branch + "/inputs/ident-btn").c_str(), this,
+ &FGKT_70::get_ident_btn, &FGKT_70::set_ident_btn);
+ fgSetArchivable((branch + "/inputs/rotation-deg").c_str());
+ fgTie((branch + "/inputs/digit1").c_str(), this,
+ &FGKT_70::get_digit1, &FGKT_70::set_digit1);
+ fgSetArchivable((branch + "/inputs/digit1").c_str());
+ fgTie((branch + "/inputs/digit2").c_str(), this,
+ &FGKT_70::get_digit2, &FGKT_70::set_digit2);
+ fgSetArchivable((branch + "/inputs/digit2").c_str());
+ fgTie((branch + "/inputs/digit3").c_str(), this,
+ &FGKT_70::get_digit3, &FGKT_70::set_digit3);
+ fgSetArchivable((branch + "/inputs/digit3").c_str());
+ fgTie((branch + "/inputs/digit4").c_str(), this,
+ &FGKT_70::get_digit4, &FGKT_70::set_digit4);
+ fgSetArchivable((branch + "/inputs/digit4").c_str());
+ fgTie((branch + "/inputs/func-knob").c_str(), this,
+ &FGKT_70::get_func_knob, &FGKT_70::set_func_knob);
+ fgSetArchivable((branch + "/inputs/func-knob").c_str());
+
+ // outputs
+ fgTie((branch + "/outputs/id-code").c_str(), this,
+ &FGKT_70::get_id_code, &FGKT_70::set_id_code);
+ fgSetArchivable((branch + "/outputs/id-code").c_str());
+ fgTie((branch + "/outputs/flight-level").c_str(), this,
+ &FGKT_70::get_flight_level);
+
+ // annunciators
+ fgTie((branch + "/annunciators/fl").c_str(), this,
+ &FGKT_70::get_fl_ann );
+ fgTie((branch + "/annunciators/alt").c_str(), this,
+ &FGKT_70::get_alt_ann );
+ fgTie((branch + "/annunciators/gnd").c_str(), this,
+ &FGKT_70::get_gnd_ann );
+ fgTie((branch + "/annunciators/on").c_str(), this,
+ &FGKT_70::get_on_ann );
+ fgTie((branch + "/annunciators/sby").c_str(), this,
+ &FGKT_70::get_sby_ann );
+ fgTie((branch + "/annunciators/reply").c_str(), this,
+ &FGKT_70::get_reply_ann );
+}
+
+
+void FGKT_70::unbind () {
+ std::ostringstream temp;
+ string branch;
+ temp << num;
+ branch = "/instrumentation/" + name + "[" + temp.str() + "]";
+ // internal values
+
+ // modes
+
+ // input and buttons
+ fgUntie((branch + "/inputs/ident-btn").c_str());
+ fgUntie((branch + "/inputs/digit1").c_str());
+ fgUntie((branch + "/inputs/digit2").c_str());
+ fgUntie((branch + "/inputs/digit3").c_str());
+ fgUntie((branch + "/inputs/digit4").c_str());
+ fgUntie((branch + "/inputs/func-knob").c_str());
+
+ // outputs
+ fgUntie((branch + "/outputs/id-code").c_str());
+ fgUntie((branch + "/outputs/flight-level").c_str());
+
+ // annunciators
+ fgUntie((branch + "/annunciators/fl").c_str());
+ fgUntie((branch + "/annunciators/alt").c_str());
+ fgUntie((branch + "/annunciators/gnd").c_str());
+ fgUntie((branch + "/annunciators/on").c_str());
+ fgUntie((branch + "/annunciators/sby").c_str());
+ fgUntie((branch + "/annunciators/reply").c_str());
+}
+
+
+// Update the various nav values based on position and valid tuned in navs
+void FGKT_70::update( double dt ) {
+ // start with all annunciators off (reply ann is handled
+ // separately) and then turn on the ones we want
+ fl_ann = false;
+ alt_ann = false;
+ gnd_ann = false;
+ on_ann = false;
+ sby_ann = false;
+ reply_ann = false;
+
+ if ( has_power() && serviceable_node->getBoolValue() ) {
+ // sanity checks
+ if ( digit1 < 0 ) { digit1 = 0; }
+ if ( digit1 > 7 ) { digit1 = 7; }
+ if ( digit2 < 0 ) { digit2 = 0; }
+ if ( digit2 > 7 ) { digit2 = 7; }
+ if ( digit3 < 0 ) { digit3 = 0; }
+ if ( digit3 > 7 ) { digit3 = 7; }
+ if ( digit4 < 0 ) { digit4 = 0; }
+ if ( digit4 > 7 ) { digit4 = 7; }
+
+ id_code = digit1 * 1000 + digit2 * 100 + digit3 * 10 + digit4;
+
+ // flight level computation
+
+ // FIXME!!!! This needs to be computed relative to 29.92 inHg,
+ // but for the moment, until I figure out how to do that, I'll
+ // just use true altitude.
+ flight_level = (int)( (alt_node->getDoubleValue() + 50.0) / 100.0);
+
+ // ident button
+ if ( ident_btn && !last_ident_btn ) {
+ // ident button depressed
+ r_flash_time = 0.0;
+ ident_mode = true;
+ }
+ r_flash_time += dt;
+ if ( r_flash_time > 18.0 ) {
+ ident_mode = false;
+ }
+
+ if ( ident_mode ) {
+ reply_ann = true;
+ } else {
+ reply_ann = false;
+ }
+
+ if ( func_knob == 1 ) {
+ sby_ann = true;
+ } else if ( func_knob == 2 ) {
+ fl_ann = true;
+ alt_ann = true;
+ gnd_ann = true;
+ on_ann = true;
+ sby_ann = true;
+ reply_ann = true;
+ } else if ( func_knob == 3 ) {
+ fl_ann = true;
+ gnd_ann = true;
+ } else if ( func_knob == 4 ) {
+ on_ann = true;
+ } else if ( func_knob == 5 ) {
+ fl_ann = true;
+ alt_ann = true;
+ }
+ }
+}
--- /dev/null
+// kt-70.hxx -- class to impliment the King KT 70 panel-m transponder
+//
+// Written by Curtis Olson, started July 2002.
+//
+// Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _FG_KT_70_HXX
+#define _FG_KT_70_HXX
+
+
+#include <Main/fg_props.hxx>
+
+#include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
+#include <simgear/math/interpolater.hxx>
+#include <simgear/timing/timestamp.hxx>
+
+#include <Navaids/navlist.hxx>
+#include <Sound/beacon.hxx>
+#include <Sound/morse.hxx>
+
+
+class FGKT_70 : public SGSubsystem
+{
+ SGPropertyNode *lon_node;
+ SGPropertyNode *lat_node;
+ SGPropertyNode *alt_node;
+ SGPropertyNode *bus_power;
+ SGPropertyNode *serviceable_node;
+
+ // internal values
+ double r_flash_time;
+
+ // modes
+ bool ident_mode; // false = normal, true = ident/squawk
+
+ // input and buttons
+ bool ident_btn;
+ bool last_ident_btn;
+ int digit1, digit2, digit3, digit4;
+ int func_knob; // 0 = OFF, 1 = SBY, 2 = TST, 3 = GND, 4 = ON,
+ // 5 = ALT
+
+ // outputs
+ int id_code;
+ int flight_level;
+
+ // annunciators
+ bool fl_ann; // flight level
+ bool alt_ann; // altitude
+ bool gnd_ann; // ground
+ bool on_ann; // on
+ bool sby_ann; // standby
+ bool reply_ann; // reply
+
+ string name;
+ int num;
+
+public:
+
+ FGKT_70(SGPropertyNode *node);
+ ~FGKT_70();
+
+ void init ();
+ void bind ();
+ void unbind ();
+ void update (double dt);
+ void search () { /* empty placeholder */ }
+
+ // internal values
+ inline bool has_power() const {
+ return (func_knob > 0) && (bus_power->getDoubleValue() > 1.0);
+ }
+
+ // input and buttons
+ inline bool get_ident_btn() const { return ident_btn; }
+ inline void set_ident_btn( bool val ) { ident_btn = val; }
+ inline int get_digit1() const { return digit1; }
+ inline void set_digit1( int val ) { digit1 = val; }
+ inline int get_digit2() const { return digit2; }
+ inline void set_digit2( int val ) { digit2 = val; }
+ inline int get_digit3() const { return digit3; }
+ inline void set_digit3( int val ) { digit3 = val; }
+ inline int get_digit4() const { return digit4; }
+ inline void set_digit4( int val ) { digit4 = val; }
+ inline int get_func_knob() const { return func_knob; }
+ inline void set_func_knob( int val ) { func_knob = val; }
+
+ // outputs
+ inline int get_id_code () const { return id_code; }
+ inline void set_id_code( int c ) { id_code = c; }
+ inline int get_flight_level () const { return flight_level; }
+
+ // annunciators
+ inline bool get_fl_ann() const { return fl_ann; }
+ inline bool get_alt_ann() const { return alt_ann; }
+ inline bool get_gnd_ann() const { return gnd_ann; }
+ inline bool get_on_ann() const { return on_ann; }
+ inline bool get_sby_ann() const { return sby_ann; }
+ inline bool get_reply_ann() const { return reply_ann; }
+};
+
+
+#endif // _FG_KT_70_HXX
--- /dev/null
+// marker_beacon.cxx -- class to manage the marker beacons
+//
+// Written by Curtis Olson, started April 2000.
+//
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h> // snprintf
+
+#include <simgear/compiler.h>
+#include <simgear/math/sg_random.h>
+
+#include <Aircraft/aircraft.hxx>
+#include <Navaids/navlist.hxx>
+
+#include "marker_beacon.hxx"
+
+#include <string>
+SG_USING_STD(string);
+
+
+// Constructor
+FGMarkerBeacon::FGMarkerBeacon(SGPropertyNode *node) :
+ need_update(true),
+ outer_blink(false),
+ middle_blink(false),
+ inner_blink(false),
+ name("marker-beacon"),
+ num(0)
+{
+ SGPath path( globals->get_fg_root() );
+ SGPath term = path;
+ term.append( "Navaids/range.term" );
+ SGPath low = path;
+ low.append( "Navaids/range.low" );
+ SGPath high = path;
+ high.append( "Navaids/range.high" );
+
+ term_tbl = new SGInterpTable( term.str() );
+ low_tbl = new SGInterpTable( low.str() );
+ high_tbl = new SGInterpTable( high.str() );
+
+ int i;
+ for ( i = 0; i < node->nChildren(); ++i ) {
+ SGPropertyNode *child = node->getChild(i);
+ string cname = child->getName();
+ string cval = child->getStringValue();
+ if ( cname == "name" ) {
+ name = cval;
+ } else if ( cname == "number" ) {
+ num = child->getIntValue();
+ } else {
+ SG_LOG( SG_INSTR, SG_WARN,
+ "Error in marker beacon config logic" );
+ if ( name.length() ) {
+ SG_LOG( SG_INSTR, SG_WARN, "Section = " << name );
+ }
+ }
+ }
+}
+
+
+// Destructor
+FGMarkerBeacon::~FGMarkerBeacon()
+{
+ delete term_tbl;
+ delete low_tbl;
+ delete high_tbl;
+}
+
+
+void
+FGMarkerBeacon::init ()
+{
+ string branch;
+ branch = "/instrumentation/" + name;
+
+ SGPropertyNode *node = fgGetNode(branch.c_str(), num, true );
+ // Inputs
+ lon_node = fgGetNode("/position/longitude-deg", true);
+ lat_node = fgGetNode("/position/latitude-deg", true);
+ alt_node = fgGetNode("/position/altitude-ft", true);
+ bus_power = fgGetNode("/systems/electrical/outputs/navcom[0]", true);
+ power_btn = node->getChild("power-btn", 0, true);
+ audio_btn = node->getChild("audio-btn", 0, true);
+ serviceable = node->getChild("serviceable", 0, true);
+
+ power_btn->setBoolValue( true );
+ audio_btn->setBoolValue( true );
+ serviceable->setBoolValue( true );
+
+ morse.init();
+ beacon.init();
+ blink.stamp();
+}
+
+
+void
+FGMarkerBeacon::bind ()
+{
+ string branch;
+ branch = "/instrumentation/" + name;
+
+ fgTie((branch + "/inner").c_str(), this,
+ &FGMarkerBeacon::get_inner_blink);
+
+ fgTie((branch + "/middle").c_str(), this,
+ &FGMarkerBeacon::get_middle_blink);
+
+ fgTie((branch + "/outer").c_str(), this,
+ &FGMarkerBeacon::get_outer_blink);
+}
+
+
+void
+FGMarkerBeacon::unbind ()
+{
+ string branch;
+ branch = "/instrumentation/" + name;
+
+ fgUntie((branch + "/inner").c_str());
+ fgUntie((branch + "/middle").c_str());
+ fgUntie((branch + "/outer").c_str());
+}
+
+
+// Update the various nav values based on position and valid tuned in navs
+void
+FGMarkerBeacon::update(double dt)
+{
+ need_update = false;
+
+ if ( has_power() && serviceable->getBoolValue() ) {
+
+ // On timeout, scan again
+ _time_before_search_sec -= dt;
+ if ( _time_before_search_sec < 0 ) {
+ search();
+ }
+ // marker beacon blinking
+ bool light_on = ( outer_blink || middle_blink || inner_blink );
+ SGTimeStamp current;
+ current.stamp();
+
+ if ( light_on && (current - blink > 400000) ) {
+ light_on = false;
+ blink.stamp();
+ } else if ( !light_on && (current - blink > 100000) ) {
+ light_on = true;
+ blink.stamp();
+ }
+
+ if ( outer_marker ) {
+ outer_blink = light_on;
+ } else {
+ outer_blink = false;
+ }
+
+ if ( middle_marker ) {
+ middle_blink = light_on;
+ } else {
+ middle_blink = false;
+ }
+
+ if ( inner_marker ) {
+ inner_blink = light_on;
+ } else {
+ inner_blink = false;
+ }
+
+ // cout << outer_blink << " " << middle_blink << " "
+ // << inner_blink << endl;
+ } else {
+ inner_blink = middle_blink = outer_blink = false;
+ }
+}
+
+
+static bool check_beacon_range( double lon_rad, double lat_rad, double elev_m,
+ FGNavRecord *b )
+{
+ Point3D aircraft = sgGeodToCart( Point3D(lon_rad, lat_rad, elev_m) );
+ Point3D station = Point3D( b->get_x(), b->get_y(), b->get_z() );
+ // cout << " aircraft = " << aircraft << " station = " << station
+ // << endl;
+
+ double d = aircraft.distance3Dsquared( station ); // meters^2
+ // cout << " distance = " << d << " ("
+ // << FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
+ // * FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
+ // << ")" << endl;
+
+ // cout << " range = " << sqrt(d) << endl;
+
+ // cout << "elev = " << elev * SG_METER_TO_FEET
+ // << " current->get_elev() = " << current->get_elev() << endl;
+ double elev_ft = elev_m * SG_METER_TO_FEET;
+ double delev = elev_ft - b->get_elev_ft();
+
+ // max range is the area under r = 2.4 * alt or r^2 = 4000^2 - alt^2
+ // whichever is smaller. The intersection point is 1538 ...
+ double maxrange2; // feet^2
+ if ( delev < 1538.0 ) {
+ maxrange2 = 2.4 * 2.4 * delev * delev;
+ } else if ( delev < 4000.0 ) {
+ maxrange2 = 4000 * 4000 - delev * delev;
+ } else {
+ maxrange2 = 0.0;
+ }
+ maxrange2 *= SG_FEET_TO_METER * SG_FEET_TO_METER; // convert to meter^2
+ // cout << "delev = " << delev << " maxrange = " << maxrange << endl;
+
+ // match up to twice the published range so we can model
+ // reduced signal strength
+ if ( d < maxrange2 ) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+// Update current nav/adf radio stations based on current postition
+void FGMarkerBeacon::search()
+{
+
+ // reset search time
+ _time_before_search_sec = 1.0;
+
+ static fgMkrBeacType last_beacon = NOBEACON;
+
+ double lon_rad = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+ double lat_rad = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+ double elev_m = alt_node->getDoubleValue() * SG_FEET_TO_METER;
+
+ ////////////////////////////////////////////////////////////////////////
+ // Beacons.
+ ////////////////////////////////////////////////////////////////////////
+
+ // get closest marker beacon
+ FGNavRecord *b
+ = globals->get_mkrlist()->findClosest( lon_rad, lat_rad, elev_m );
+
+ // cout << "marker beacon = " << b << " (" << b->get_type() << ")" << endl;
+
+ fgMkrBeacType beacon_type = NOBEACON;
+ bool inrange = false;
+ if ( b != NULL ) {
+ if ( b->get_type() == 7 ) {
+ beacon_type = OUTER;
+ } else if ( b->get_type() == 8 ) {
+ beacon_type = MIDDLE;
+ } else if ( b->get_type() == 9 ) {
+ beacon_type = INNER;
+ }
+ inrange = check_beacon_range( lon_rad, lat_rad, elev_m, b );
+ // cout << " inrange = " << inrange << endl;
+ }
+
+ outer_marker = middle_marker = inner_marker = false;
+
+ if ( b == NULL || !inrange || !has_power() || !serviceable->getBoolValue() )
+ {
+ // cout << "no marker" << endl;
+ globals->get_soundmgr()->stop( "outer-marker" );
+ globals->get_soundmgr()->stop( "middle-marker" );
+ globals->get_soundmgr()->stop( "inner-marker" );
+ } else if ( beacon_type == OUTER ) {
+ outer_marker = true;
+ // cout << "OUTER MARKER" << endl;
+ if ( last_beacon != OUTER ) {
+ if ( ! globals->get_soundmgr()->exists( "outer-marker" ) ) {
+ SGSoundSample *sound = beacon.get_outer();
+ sound->set_volume( 0.3 );
+ globals->get_soundmgr()->add( sound, "outer-marker" );
+ }
+ }
+ if ( audio_btn->getBoolValue() ) {
+ if ( !globals->get_soundmgr()->is_playing("outer-marker") ) {
+ globals->get_soundmgr()->play_looped( "outer-marker" );
+ }
+ } else {
+ globals->get_soundmgr()->stop( "outer-marker" );
+ }
+ } else if ( beacon_type == MIDDLE ) {
+ middle_marker = true;
+ // cout << "MIDDLE MARKER" << endl;
+ if ( last_beacon != MIDDLE ) {
+ if ( ! globals->get_soundmgr()->exists( "middle-marker" ) ) {
+ SGSoundSample *sound = beacon.get_middle();
+ sound->set_volume( 0.3 );
+ globals->get_soundmgr()->add( sound, "middle-marker" );
+ }
+ }
+ if ( audio_btn->getBoolValue() ) {
+ if ( !globals->get_soundmgr()->is_playing("middle-marker") ) {
+ globals->get_soundmgr()->play_looped( "middle-marker" );
+ }
+ } else {
+ globals->get_soundmgr()->stop( "middle-marker" );
+ }
+ } else if ( beacon_type == INNER ) {
+ inner_marker = true;
+ // cout << "INNER MARKER" << endl;
+ if ( last_beacon != INNER ) {
+ if ( ! globals->get_soundmgr()->exists( "inner-marker" ) ) {
+ SGSoundSample *sound = beacon.get_inner();
+ sound->set_volume( 0.3 );
+ globals->get_soundmgr()->add( sound, "inner-marker" );
+ }
+ }
+ if ( audio_btn->getBoolValue() ) {
+ if ( !globals->get_soundmgr()->is_playing("inner-marker") ) {
+ globals->get_soundmgr()->play_looped( "inner-marker" );
+ }
+ } else {
+ globals->get_soundmgr()->stop( "inner-marker" );
+ }
+ }
+
+ if ( inrange ) {
+ last_beacon = beacon_type;
+ } else {
+ last_beacon = NOBEACON;
+ }
+}
--- /dev/null
+// marker_beacon.hxx -- class to manage the marker beacons
+//
+// Written by Curtis Olson, started April 2000.
+//
+// Copyright (C) 2000 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _FG_MARKER_BEACON_HXX
+#define _FG_MARKER_BEACON_HXX
+
+
+#include <Main/fg_props.hxx>
+
+#include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
+#include <simgear/math/interpolater.hxx>
+#include <simgear/timing/timestamp.hxx>
+
+#include <Sound/beacon.hxx>
+#include <Sound/morse.hxx>
+
+
+class FGMarkerBeacon : public SGSubsystem
+{
+ FGBeacon beacon;
+ FGMorse morse;
+
+ SGInterpTable *term_tbl;
+ SGInterpTable *low_tbl;
+ SGInterpTable *high_tbl;
+
+ // Inputs
+ SGPropertyNode *lon_node;
+ SGPropertyNode *lat_node;
+ SGPropertyNode *alt_node;
+ SGPropertyNode *bus_power;
+ SGPropertyNode *power_btn;
+ SGPropertyNode *audio_btn;
+ SGPropertyNode *serviceable;
+
+ bool need_update;
+
+ bool outer_marker;
+ bool middle_marker;
+ bool inner_marker;
+
+ SGTimeStamp blink;
+ bool outer_blink;
+ bool middle_blink;
+ bool inner_blink;
+
+ string name;
+ int num;
+
+ // internal periodic station search timer
+ double _time_before_search_sec;
+
+public:
+
+ enum fgMkrBeacType {
+ NOBEACON = 0,
+ INNER,
+ MIDDLE,
+ OUTER
+ };
+
+ FGMarkerBeacon(SGPropertyNode *node);
+ ~FGMarkerBeacon();
+
+ void init ();
+ void bind ();
+ void unbind ();
+ void update (double dt);
+
+ void search ();
+
+ // Marker Beacon Accessors
+ inline bool get_inner_blink () const { return inner_blink; }
+ inline bool get_middle_blink () const { return middle_blink; }
+ inline bool get_outer_blink () const { return outer_blink; }
+ inline bool has_power() const {
+ return power_btn->getBoolValue() && (bus_power->getDoubleValue() > 1.0);
+ }
+};
+
+
+#endif // _FG_MARKER_BEACON_HXX
--- /dev/null
+// navradio.cxx -- class to manage a nav radio instance
+//
+// Written by Curtis Olson, started April 2000.
+//
+// Copyright (C) 2000 - 2002 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <iostream>
+#include <string>
+#include <sstream>
+
+#include <simgear/compiler.h>
+#include <simgear/sg_inlines.h>
+#include <simgear/math/sg_random.h>
+#include <simgear/math/vector.hxx>
+
+#include <Aircraft/aircraft.hxx>
+#include <Navaids/navlist.hxx>
+
+#include "navradio.hxx"
+
+#include <string>
+SG_USING_STD(string);
+
+
+// Constructor
+FGNavRadio::FGNavRadio(SGPropertyNode *node) :
+ lon_node(fgGetNode("/position/longitude-deg", true)),
+ lat_node(fgGetNode("/position/latitude-deg", true)),
+ alt_node(fgGetNode("/position/altitude-ft", true)),
+ last_nav_id(""),
+ last_nav_vor(false),
+ nav_play_count(0),
+ nav_last_time(0),
+ need_update(true),
+ power_btn(true),
+ audio_btn(true),
+ nav_freq(0.0),
+ nav_alt_freq(0.0),
+ nav_heading(0.0),
+ nav_radial(0.0),
+ nav_target_radial(0.0),
+ nav_target_radial_true(0.0),
+ nav_target_auto_hdg(0.0),
+ nav_gs_rate_of_climb(0.0),
+ nav_vol_btn(0.0),
+ nav_ident_btn(true),
+ horiz_vel(0.0),
+ last_x(0.0),
+ name("nav"),
+ num(0)
+{
+ SGPath path( globals->get_fg_root() );
+ SGPath term = path;
+ term.append( "Navaids/range.term" );
+ SGPath low = path;
+ low.append( "Navaids/range.low" );
+ SGPath high = path;
+ high.append( "Navaids/range.high" );
+
+ term_tbl = new SGInterpTable( term.str() );
+ low_tbl = new SGInterpTable( low.str() );
+ high_tbl = new SGInterpTable( high.str() );
+
+ int i;
+ for ( i = 0; i < node->nChildren(); ++i ) {
+ SGPropertyNode *child = node->getChild(i);
+ string cname = child->getName();
+ string cval = child->getStringValue();
+ if ( cname == "name" ) {
+ name = cval;
+ } else if ( cname == "number" ) {
+ num = child->getIntValue();
+ } else {
+ SG_LOG( SG_INSTR, SG_WARN,
+ "Error in nav radio config logic" );
+ if ( name.length() ) {
+ SG_LOG( SG_INSTR, SG_WARN, "Section = " << name );
+ }
+ }
+ }
+
+}
+
+
+// Destructor
+FGNavRadio::~FGNavRadio()
+{
+ delete term_tbl;
+ delete low_tbl;
+ delete high_tbl;
+}
+
+
+void
+FGNavRadio::init ()
+{
+ morse.init();
+
+ string branch;
+ branch = "/instrumentation/" + name;
+
+ SGPropertyNode *node = fgGetNode(branch.c_str(), num, true );
+
+ bus_power =
+ fgGetNode(("/systems/electrical/outputs/" + name).c_str(), true);
+ nav_serviceable = node->getChild("serviceable", 0, true);
+ cdi_serviceable = (node->getChild("cdi", 0, true))
+ ->getChild("serviceable", 0, true);
+ gs_serviceable = (node->getChild("gs", 0, true))
+ ->getNode("serviceable");
+ tofrom_serviceable = (node->getChild("to-from", 0, true))
+ ->getChild("serviceable", 0, true);
+}
+
+void
+FGNavRadio::bind ()
+{
+ std::ostringstream temp;
+ string branch;
+ temp << num;
+ branch = "/instrumentation/" + name + "[" + temp.str() + "]";
+
+ // User inputs
+ fgTie( (branch + "/frequencies/selected-mhz").c_str() , this,
+ &FGNavRadio::get_nav_freq, &FGNavRadio::set_nav_freq );
+ fgSetArchivable( (branch + "/frequencies/selected-mhz").c_str() );
+
+ fgTie( (branch + "/frequencies/standby-mhz").c_str() , this,
+ &FGNavRadio::get_nav_alt_freq, &FGNavRadio::set_nav_alt_freq);
+ fgSetArchivable( (branch + "/frequencies/standby-mhz").c_str() );
+
+ fgTie( (branch + "/radials/selected-deg").c_str() , this,
+ &FGNavRadio::get_nav_sel_radial, &FGNavRadio::set_nav_sel_radial );
+ fgSetArchivable((branch + "/radials/selected-deg").c_str() );
+
+ fgTie( (branch + "/volume").c_str() , this,
+ &FGNavRadio::get_nav_vol_btn, &FGNavRadio::set_nav_vol_btn );
+ fgSetArchivable( (branch + "/volume").c_str() );
+
+ fgTie( (branch + "/ident").c_str(), this,
+ &FGNavRadio::get_nav_ident_btn, &FGNavRadio::set_nav_ident_btn );
+ fgSetArchivable( (branch + "/ident").c_str() );
+
+ // Radio outputs
+ fgTie( (branch + "/audio-btn").c_str(), this,
+ &FGNavRadio::get_audio_btn, &FGNavRadio::set_audio_btn );
+ fgSetArchivable( (branch + "/audio-btn").c_str() );
+
+ fgTie( (branch + "/heading-deg").c_str(),
+ this, &FGNavRadio::get_nav_heading );
+
+ fgTie( (branch + "/radials/actual-deg").c_str(),
+ this, &FGNavRadio::get_nav_radial );
+
+ fgTie( (branch + "/radials/target-radial-deg").c_str(),
+ this, &FGNavRadio::get_nav_target_radial_true );
+
+ fgTie( (branch + "/radials/target-auto-hdg-deg").c_str(),
+ this, &FGNavRadio::get_nav_target_auto_hdg );
+
+ fgTie( (branch + "/to-flag").c_str(),
+ this, &FGNavRadio::get_nav_to_flag );
+
+ fgTie( (branch + "/from-flag").c_str(),
+ this, &FGNavRadio::get_nav_from_flag );
+
+ fgTie( (branch + "/in-range").c_str(),
+ this, &FGNavRadio::get_nav_inrange );
+
+ fgTie( (branch + "/heading-needle-deflection").c_str(),
+ this, &FGNavRadio::get_nav_cdi_deflection );
+
+ fgTie( (branch + "/crosstrack-error-m").c_str(),
+ this, &FGNavRadio::get_nav_cdi_xtrack_error );
+
+ fgTie( (branch + "/has-gs").c_str(),
+ this, &FGNavRadio::get_nav_has_gs );
+
+ fgTie( (branch + "/nav-loc").c_str(),
+ this, &FGNavRadio::get_nav_loc );
+
+ fgTie( (branch + "/gs-rate-of-climb").c_str(),
+ this, &FGNavRadio::get_nav_gs_rate_of_climb );
+
+ fgTie( (branch + "/gs-needle-deflection").c_str(),
+ this, &FGNavRadio::get_nav_gs_deflection );
+
+ fgTie( (branch + "/nav-id").c_str(),
+ this, &FGNavRadio::get_nav_id );
+
+ // put nav_id characters into seperate properties for instrument displays
+ fgTie( (branch + "/nav-id_asc1").c_str(),
+ this, &FGNavRadio::get_nav_id_c1 );
+
+ fgTie( (branch + "/nav-id_asc2").c_str(),
+ this, &FGNavRadio::get_nav_id_c2 );
+
+ fgTie( (branch + "/nav-id_asc3").c_str(),
+ this, &FGNavRadio::get_nav_id_c3 );
+
+ fgTie( (branch + "/nav-id_asc4").c_str(),
+ this, &FGNavRadio::get_nav_id_c4 );
+
+ // end of binding
+}
+
+
+void
+FGNavRadio::unbind ()
+{
+ std::ostringstream temp;
+ string branch;
+ temp << num;
+ branch = "/instrumentation/" + name + "[" + temp.str() + "]";
+
+ fgUntie( (branch + "/frequencies/selected-mhz").c_str() );
+ fgUntie( (branch + "/frequencies/standby-mhz").c_str() );
+ fgUntie( (branch + "/radials/actual-deg").c_str() );
+ fgUntie( (branch + "/radials/selected-deg").c_str() );
+ fgUntie( (branch + "/ident").c_str() );
+ fgUntie( (branch + "/to-flag").c_str() );
+ fgUntie( (branch + "/from-flag").c_str() );
+ fgUntie( (branch + "/in-range").c_str() );
+ fgUntie( (branch + "/heading-needle-deflection").c_str() );
+ fgUntie( (branch + "/gs-needle-deflection").c_str() );
+}
+
+
+// model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
+double FGNavRadio::adjustNavRange( double stationElev, double aircraftElev,
+ double nominalRange )
+{
+ // extend out actual usable range to be 1.3x the published safe range
+ const double usability_factor = 1.3;
+
+ // assumptions we model the standard service volume, plus
+ // ... rather than specifying a cylinder, we model a cone that
+ // contains the cylinder. Then we put an upside down cone on top
+ // to model diminishing returns at too-high altitudes.
+
+ // altitude difference
+ double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
+ // cout << "aircraft elev = " << aircraftElev * SG_METER_TO_FEET
+ // << " station elev = " << stationElev << endl;
+
+ if ( nominalRange < 25.0 + SG_EPSILON ) {
+ // Standard Terminal Service Volume
+ return term_tbl->interpolate( alt ) * usability_factor;
+ } else if ( nominalRange < 50.0 + SG_EPSILON ) {
+ // Standard Low Altitude Service Volume
+ // table is based on range of 40, scale to actual range
+ return low_tbl->interpolate( alt ) * nominalRange / 40.0
+ * usability_factor;
+ } else {
+ // Standard High Altitude Service Volume
+ // table is based on range of 130, scale to actual range
+ return high_tbl->interpolate( alt ) * nominalRange / 130.0
+ * usability_factor;
+ }
+}
+
+
+// model standard ILS service volumes as per AIM 1-1-9
+double FGNavRadio::adjustILSRange( double stationElev, double aircraftElev,
+ double offsetDegrees, double distance )
+{
+ // assumptions we model the standard service volume, plus
+
+ // altitude difference
+ // double alt = ( aircraftElev * SG_METER_TO_FEET - stationElev );
+// double offset = fabs( offsetDegrees );
+
+// if ( offset < 10 ) {
+// return FG_ILS_DEFAULT_RANGE;
+// } else if ( offset < 35 ) {
+// return 10 + (35 - offset) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
+// } else if ( offset < 45 ) {
+// return (45 - offset);
+// } else if ( offset > 170 ) {
+// return FG_ILS_DEFAULT_RANGE;
+// } else if ( offset > 145 ) {
+// return 10 + (offset - 145) * (FG_ILS_DEFAULT_RANGE - 10) / 25;
+// } else if ( offset > 135 ) {
+// return (offset - 135);
+// } else {
+// return 0;
+// }
+ return FG_LOC_DEFAULT_RANGE;
+}
+
+
+// Update the various nav values based on position and valid tuned in navs
+void
+FGNavRadio::update(double dt)
+{
+ double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+ double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+ double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
+
+ need_update = false;
+
+ Point3D aircraft = sgGeodToCart( Point3D( lon, lat, elev ) );
+ Point3D station;
+ double az1, az2, s;
+
+ // On timeout, scan again
+ _time_before_search_sec -= dt;
+ if ( _time_before_search_sec < 0 ) {
+ search();
+ }
+
+ ////////////////////////////////////////////////////////////////////////
+ // Nav.
+ ////////////////////////////////////////////////////////////////////////
+
+ if ( nav_valid && power_btn && (bus_power->getDoubleValue() > 1.0)
+ && nav_serviceable->getBoolValue() )
+ {
+ station = Point3D( nav_x, nav_y, nav_z );
+ nav_loc_dist = aircraft.distance3D( station );
+
+ if ( nav_has_gs ) {
+ // find closest distance to the gs base line
+ sgdVec3 p;
+ sgdSetVec3( p, aircraft.x(), aircraft.y(), aircraft.z() );
+ sgdVec3 p0;
+ sgdSetVec3( p0, nav_gs_x, nav_gs_y, nav_gs_z );
+ double dist = sgdClosestPointToLineDistSquared( p, p0,
+ gs_base_vec );
+ nav_gs_dist = sqrt( dist );
+ // cout << "nav_gs_dist = " << nav_gs_dist << endl;
+
+ Point3D tmp( nav_gs_x, nav_gs_y, nav_gs_z );
+ // cout << " (" << aircraft.distance3D( tmp ) << ")" << endl;
+
+ // wgs84 heading to glide slope (to determine sign of distance)
+ geo_inverse_wgs_84( elev,
+ lat * SGD_RADIANS_TO_DEGREES,
+ lon * SGD_RADIANS_TO_DEGREES,
+ nav_gslat, nav_gslon,
+ &az1, &az2, &s );
+ double r = az1 - nav_target_radial;
+ while ( r > 180.0 ) { r -= 360.0;}
+ while ( r < -180.0 ) { r += 360.0;}
+ if ( r >= -90.0 && r <= 90.0 ) {
+ nav_gs_dist_signed = nav_gs_dist;
+ } else {
+ nav_gs_dist_signed = -nav_gs_dist;
+ }
+ /* cout << "Target Radial = " << nav_target_radial
+ << " Bearing = " << az1
+ << " dist (signed) = " << nav_gs_dist_signed
+ << endl; */
+
+ } else {
+ nav_gs_dist = 0.0;
+ }
+
+ // wgs84 heading to localizer
+ geo_inverse_wgs_84( elev,
+ lat * SGD_RADIANS_TO_DEGREES,
+ lon * SGD_RADIANS_TO_DEGREES,
+ nav_loclat, nav_loclon,
+ &nav_heading, &az2, &s );
+ // cout << "az1 = " << az1 << " magvar = " << nav_magvar << endl;
+ nav_radial = az2 - nav_twist;
+ // cout << " heading = " << nav_heading
+ // << " dist = " << nav_dist << endl;
+
+ if ( nav_loc ) {
+ double offset = nav_radial - nav_target_radial;
+ while ( offset < -180.0 ) { offset += 360.0; }
+ while ( offset > 180.0 ) { offset -= 360.0; }
+ // cout << "ils offset = " << offset << endl;
+ nav_effective_range
+ = adjustILSRange( nav_elev, elev, offset,
+ nav_loc_dist * SG_METER_TO_NM );
+ } else {
+ nav_effective_range = adjustNavRange( nav_elev, elev, nav_range );
+ }
+ // cout << "nav range = " << nav_effective_range
+ // << " (" << nav_range << ")" << endl;
+
+ if ( nav_loc_dist < nav_effective_range * SG_NM_TO_METER ) {
+ nav_inrange = true;
+ } else if ( nav_loc_dist < 2 * nav_effective_range * SG_NM_TO_METER ) {
+ nav_inrange = sg_random() <
+ ( 2 * nav_effective_range * SG_NM_TO_METER - nav_loc_dist ) /
+ (nav_effective_range * SG_NM_TO_METER);
+ } else {
+ nav_inrange = false;
+ }
+
+ if ( !nav_loc ) {
+ nav_target_radial = nav_sel_radial;
+ }
+
+ // Calculate some values for the nav/ils hold autopilot
+
+ double cur_radial = get_nav_reciprocal_radial();
+ if ( nav_loc ) {
+ // ILS localizers radials are already "true" in our
+ // database
+ } else {
+ cur_radial += nav_twist;
+ }
+ if ( get_nav_from_flag() ) {
+ cur_radial += 180.0;
+ while ( cur_radial >= 360.0 ) { cur_radial -= 360.0; }
+ }
+
+ // AUTOPILOT HELPERS
+
+ // determine the target radial in "true" heading
+ nav_target_radial_true = nav_target_radial;
+ if ( nav_loc ) {
+ // ILS localizers radials are already "true" in our
+ // database
+ } else {
+ // VOR radials need to have that vor's offset added in
+ nav_target_radial_true += nav_twist;
+ }
+
+ while ( nav_target_radial_true < 0.0 ) {
+ nav_target_radial_true += 360.0;
+ }
+ while ( nav_target_radial_true > 360.0 ) {
+ nav_target_radial_true -= 360.0;
+ }
+
+ // determine the heading adjustment needed.
+ // over 8km scale by 3.0
+ // (3 is chosen because max deflection is 10
+ // and 30 is clamped angle to radial)
+ // under 8km scale by 10.0
+ // because the overstated error helps drive it to the radial in a
+ // moderate cross wind.
+ double adjustment = 0.0;
+ if (nav_loc_dist > 8000) {
+ adjustment = get_nav_cdi_deflection() * 3.0;
+ } else {
+ adjustment = get_nav_cdi_deflection() * 10.0;
+ }
+ SG_CLAMP_RANGE( adjustment, -30.0, 30.0 );
+
+ // determine the target heading to fly to intercept the
+ // tgt_radial
+ nav_target_auto_hdg = nav_target_radial_true + adjustment;
+ while ( nav_target_auto_hdg < 0.0 ) { nav_target_auto_hdg += 360.0; }
+ while ( nav_target_auto_hdg > 360.0 ) { nav_target_auto_hdg -= 360.0; }
+
+ // cross track error
+ // ????
+
+ // Calculate desired rate of climb for intercepting the GS
+ double x = nav_gs_dist;
+ double y = (alt_node->getDoubleValue() - nav_elev)
+ * SG_FEET_TO_METER;
+ double current_angle = atan2( y, x ) * SGD_RADIANS_TO_DEGREES;
+
+ double target_angle = nav_target_gs;
+ double gs_diff = target_angle - current_angle;
+
+ // convert desired vertical path angle into a climb rate
+ double des_angle = current_angle - 10 * gs_diff;
+
+ // estimate horizontal speed towards ILS in meters per minute
+ double dist = last_x - x;
+ last_x = x;
+ if ( dt > 0.0 ) {
+ // avoid nan
+ double new_vel = ( dist / dt );
+
+ horiz_vel = 0.75 * horiz_vel + 0.25 * new_vel;
+ // double horiz_vel = cur_fdm_state->get_V_ground_speed()
+ // * SG_FEET_TO_METER * 60.0;
+ // double horiz_vel = airspeed_node->getFloatValue()
+ // * SG_FEET_TO_METER * 60.0;
+
+ nav_gs_rate_of_climb = -sin( des_angle * SGD_DEGREES_TO_RADIANS )
+ * horiz_vel * SG_METER_TO_FEET;
+ }
+ } else {
+ nav_inrange = false;
+ // cout << "not picking up vor. :-(" << endl;
+ }
+
+ if ( nav_valid && nav_inrange && nav_serviceable->getBoolValue() ) {
+ // play station ident via audio system if on + ident,
+ // otherwise turn it off
+ if ( power_btn && (bus_power->getDoubleValue() > 1.0)
+ && nav_ident_btn && audio_btn )
+ {
+ SGSoundSample *sound;
+ sound = globals->get_soundmgr()->find( nav_fx_name );
+ if ( sound != NULL ) {
+ sound->set_volume( nav_vol_btn );
+ } else {
+ SG_LOG( SG_COCKPIT, SG_ALERT,
+ "Can't find nav-vor-ident sound" );
+ }
+ sound = globals->get_soundmgr()->find( dme_fx_name );
+ if ( sound != NULL ) {
+ sound->set_volume( nav_vol_btn );
+ } else {
+ SG_LOG( SG_COCKPIT, SG_ALERT,
+ "Can't find nav-dme-ident sound" );
+ }
+ // cout << "nav_last_time = " << nav_last_time << " ";
+ // cout << "cur_time = "
+ // << globals->get_time_params()->get_cur_time();
+ if ( nav_last_time <
+ globals->get_time_params()->get_cur_time() - 30 ) {
+ nav_last_time = globals->get_time_params()->get_cur_time();
+ nav_play_count = 0;
+ }
+ // cout << " nav_play_count = " << nav_play_count << endl;
+ // cout << "playing = "
+ // << globals->get_soundmgr()->is_playing(nav_fx_name)
+ // << endl;
+ if ( nav_play_count < 4 ) {
+ // play VOR ident
+ if ( !globals->get_soundmgr()->is_playing(nav_fx_name) ) {
+ globals->get_soundmgr()->play_once( nav_fx_name );
+ ++nav_play_count;
+ }
+ } else if ( nav_play_count < 5 && nav_has_dme ) {
+ // play DME ident
+ if ( !globals->get_soundmgr()->is_playing(nav_fx_name) &&
+ !globals->get_soundmgr()->is_playing(dme_fx_name) ) {
+ globals->get_soundmgr()->play_once( dme_fx_name );
+ ++nav_play_count;
+ }
+ }
+ } else {
+ globals->get_soundmgr()->stop( nav_fx_name );
+ globals->get_soundmgr()->stop( dme_fx_name );
+ }
+ }
+}
+
+
+// Update current nav/adf radio stations based on current postition
+void FGNavRadio::search()
+{
+
+ // reset search time
+ _time_before_search_sec = 1.0;
+
+ double lon = lon_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+ double lat = lat_node->getDoubleValue() * SGD_DEGREES_TO_RADIANS;
+ double elev = alt_node->getDoubleValue() * SG_FEET_TO_METER;
+
+ FGNavRecord *nav = NULL;
+ FGNavRecord *loc = NULL;
+ FGNavRecord *dme = NULL;
+ FGNavRecord *gs = NULL;
+
+ ////////////////////////////////////////////////////////////////////////
+ // Nav.
+ ////////////////////////////////////////////////////////////////////////
+
+ nav = globals->get_navlist()->findByFreq(nav_freq, lon, lat, elev);
+ dme = globals->get_dmelist()->findByFreq(nav_freq, lon, lat, elev);
+ if ( nav == NULL ) {
+ loc = globals->get_loclist()->findByFreq(nav_freq, lon, lat, elev);
+ gs = globals->get_gslist()->findByFreq(nav_freq, lon, lat, elev);
+ }
+
+ if ( loc != NULL ) {
+ nav_id = loc->get_ident();
+ // cout << "localizer = " << nav_id << endl;
+ nav_valid = true;
+ if ( last_nav_id != nav_id || last_nav_vor ) {
+ nav_trans_ident = loc->get_trans_ident();
+ nav_target_radial = loc->get_multiuse();
+ while ( nav_target_radial < 0.0 ) { nav_target_radial += 360.0; }
+ while ( nav_target_radial > 360.0 ) { nav_target_radial -= 360.0; }
+ nav_loclon = loc->get_lon();
+ nav_loclat = loc->get_lat();
+ nav_x = loc->get_x();
+ nav_y = loc->get_y();
+ nav_z = loc->get_z();
+ last_nav_id = nav_id;
+ last_nav_vor = false;
+ nav_loc = true;
+ nav_has_dme = (dme != NULL);
+ nav_has_gs = (gs != NULL);
+ if ( nav_has_gs ) {
+ nav_gslon = gs->get_lon();
+ nav_gslat = gs->get_lat();
+ nav_elev = gs->get_elev_ft();
+ int tmp = (int)(gs->get_multiuse() / 1000.0);
+ nav_target_gs = (double)tmp / 100.0;
+ nav_gs_x = gs->get_x();
+ nav_gs_y = gs->get_y();
+ nav_gs_z = gs->get_z();
+
+ // derive GS baseline (perpendicular to the runay
+ // along the ground)
+ double tlon, tlat, taz;
+ geo_direct_wgs_84 ( 0.0, nav_gslat, nav_gslon,
+ nav_target_radial + 90,
+ 100.0, &tlat, &tlon, &taz );
+ // cout << "nav_target_radial = " << nav_target_radial << endl;
+ // cout << "nav_loc = " << nav_loc << endl;
+ // cout << nav_gslon << "," << nav_gslat << " "
+ // << tlon << "," << tlat << " (" << nav_elev << ")"
+ // << endl;
+ Point3D p1 = sgGeodToCart( Point3D(tlon*SGD_DEGREES_TO_RADIANS,
+ tlat*SGD_DEGREES_TO_RADIANS,
+ nav_elev*SG_FEET_TO_METER)
+ );
+ // cout << nav_gs_x << "," << nav_gs_y << "," << nav_gs_z
+ // << endl;
+ // cout << p1 << endl;
+ sgdSetVec3( gs_base_vec,
+ p1.x()-nav_gs_x, p1.y()-nav_gs_y, p1.z()-nav_gs_z );
+ // cout << gs_base_vec[0] << "," << gs_base_vec[1] << ","
+ // << gs_base_vec[2] << endl;
+ } else {
+ nav_elev = loc->get_elev_ft();
+ }
+ nav_twist = 0;
+ nav_range = FG_LOC_DEFAULT_RANGE;
+ nav_effective_range = nav_range;
+
+ if ( globals->get_soundmgr()->exists( nav_fx_name ) ) {
+ globals->get_soundmgr()->remove( nav_fx_name );
+ }
+ SGSoundSample *sound;
+ sound = morse.make_ident( nav_trans_ident, LO_FREQUENCY );
+ sound->set_volume( 0.3 );
+ globals->get_soundmgr()->add( sound, nav_fx_name );
+
+ if ( globals->get_soundmgr()->exists( dme_fx_name ) ) {
+ globals->get_soundmgr()->remove( dme_fx_name );
+ }
+ sound = morse.make_ident( nav_trans_ident, HI_FREQUENCY );
+ sound->set_volume( 0.3 );
+ globals->get_soundmgr()->add( sound, dme_fx_name );
+
+ int offset = (int)(sg_random() * 30.0);
+ nav_play_count = offset / 4;
+ nav_last_time = globals->get_time_params()->get_cur_time() -
+ offset;
+ // cout << "offset = " << offset << " play_count = "
+ // << nav_play_count
+ // << " nav_last_time = " << nav_last_time
+ // << " current time = "
+ // << globals->get_time_params()->get_cur_time() << endl;
+
+ // cout << "Found an loc station in range" << endl;
+ // cout << " id = " << loc->get_locident() << endl;
+ }
+ } else if ( nav != NULL ) {
+ nav_id = nav->get_ident();
+ // cout << "nav = " << nav_id << endl;
+ nav_valid = true;
+ if ( last_nav_id != nav_id || !last_nav_vor ) {
+ last_nav_id = nav_id;
+ last_nav_vor = true;
+ nav_trans_ident = nav->get_trans_ident();
+ nav_loc = false;
+ nav_has_dme = (dme != NULL);
+ nav_has_gs = false;
+ nav_loclon = nav->get_lon();
+ nav_loclat = nav->get_lat();
+ nav_elev = nav->get_elev_ft();
+ nav_twist = nav->get_multiuse();
+ nav_range = nav->get_range();
+ nav_effective_range = adjustNavRange(nav_elev, elev, nav_range);
+ nav_target_gs = 0.0;
+ nav_target_radial = nav_sel_radial;
+ nav_x = nav->get_x();
+ nav_y = nav->get_y();
+ nav_z = nav->get_z();
+
+ if ( globals->get_soundmgr()->exists( nav_fx_name ) ) {
+ globals->get_soundmgr()->remove( nav_fx_name );
+ }
+ SGSoundSample *sound;
+ sound = morse.make_ident( nav_trans_ident, LO_FREQUENCY );
+ sound->set_volume( 0.3 );
+ if ( globals->get_soundmgr()->add( sound, nav_fx_name ) ) {
+ // cout << "Added nav-vor-ident sound" << endl;
+ } else {
+ SG_LOG(SG_COCKPIT, SG_WARN, "Failed to add v1-vor-ident sound");
+ }
+
+ if ( globals->get_soundmgr()->exists( dme_fx_name ) ) {
+ globals->get_soundmgr()->remove( dme_fx_name );
+ }
+ sound = morse.make_ident( nav_trans_ident, HI_FREQUENCY );
+ sound->set_volume( 0.3 );
+ globals->get_soundmgr()->add( sound, dme_fx_name );
+
+ int offset = (int)(sg_random() * 30.0);
+ nav_play_count = offset / 4;
+ nav_last_time = globals->get_time_params()->get_cur_time() -
+ offset;
+ // cout << "offset = " << offset << " play_count = "
+ // << nav_play_count << " nav_last_time = "
+ // << nav_last_time << " current time = "
+ // << globals->get_time_params()->get_cur_time() << endl;
+
+ // cout << "Found a vor station in range" << endl;
+ // cout << " id = " << nav->get_ident() << endl;
+ }
+ } else {
+ nav_valid = false;
+ nav_id = "";
+ nav_target_radial = 0;
+ nav_trans_ident = "";
+ last_nav_id = "";
+ if ( ! globals->get_soundmgr()->remove( nav_fx_name ) ) {
+ SG_LOG(SG_COCKPIT, SG_WARN, "Failed to remove nav-vor-ident sound");
+ }
+ globals->get_soundmgr()->remove( dme_fx_name );
+ // cout << "not picking up vor1. :-(" << endl;
+ }
+}
+
+
+// return the amount of heading needle deflection, returns a value
+// clamped to the range of ( -10 , 10 )
+double FGNavRadio::get_nav_cdi_deflection() const {
+ double r;
+
+ if ( nav_inrange
+ && nav_serviceable->getBoolValue() && cdi_serviceable->getBoolValue() )
+ {
+ r = nav_radial - nav_target_radial;
+ // cout << "Target radial = " << nav_target_radial
+ // << " Actual radial = " << nav_radial << endl;
+
+ while ( r > 180.0 ) { r -= 360.0;}
+ while ( r < -180.0 ) { r += 360.0;}
+ if ( fabs(r) > 90.0 )
+ r = ( r<0.0 ? -r-180.0 : -r+180.0 );
+
+ // According to Robin Peel, the ILS is 4x more sensitive than a vor
+ r = -r; // reverse, since radial is outbound
+ if ( nav_loc ) { r *= 4.0; }
+ if ( r < -10.0 ) { r = -10.0; }
+ if ( r > 10.0 ) { r = 10.0; }
+ } else {
+ r = 0.0;
+ }
+
+ return r;
+}
+
+// return the amount of cross track distance error, returns a meters
+double FGNavRadio::get_nav_cdi_xtrack_error() const {
+ double r, m;
+
+ if ( nav_inrange
+ && nav_serviceable->getBoolValue() && cdi_serviceable->getBoolValue() )
+ {
+ r = nav_radial - nav_target_radial;
+ // cout << "Target radial = " << nav_target_radial
+ // << " Actual radial = " << nav_radial
+ // << " r = " << r << endl;
+
+ while ( r > 180.0 ) { r -= 360.0;}
+ while ( r < -180.0 ) { r += 360.0;}
+ if ( fabs(r) > 90.0 )
+ r = ( r<0.0 ? -r-180.0 : -r+180.0 );
+
+ r = -r; // reverse, since radial is outbound
+
+ m = nav_loc_dist * sin(r * SGD_DEGREES_TO_RADIANS);
+
+ } else {
+ m = 0.0;
+ }
+
+ return m;
+}
+
+// return the amount of glide slope needle deflection (.i.e. the
+// number of degrees we are off the glide slope * 5.0
+double FGNavRadio::get_nav_gs_deflection() const {
+ if ( nav_inrange && nav_has_gs
+ && nav_serviceable->getBoolValue() && gs_serviceable->getBoolValue() )
+ {
+ double x = nav_gs_dist;
+ double y = (fgGetDouble("/position/altitude-ft") - nav_elev)
+ * SG_FEET_TO_METER;
+ // cout << "dist = " << x << " height = " << y << endl;
+ double angle = asin( y / x ) * SGD_RADIANS_TO_DEGREES;
+ return (nav_target_gs - angle) * 5.0;
+ } else {
+ return 0.0;
+ }
+}
+
+
+/**
+ * Return true if the NAV TO flag should be active.
+ */
+bool
+FGNavRadio::get_nav_to_flag () const
+{
+ if ( nav_inrange
+ && nav_serviceable->getBoolValue()
+ && tofrom_serviceable->getBoolValue() )
+ {
+ double offset = fabs(nav_radial - nav_target_radial);
+ if (nav_loc) {
+ return true;
+ } else {
+ return !(offset <= 90.0 || offset >= 270.0);
+ }
+ } else {
+ return false;
+ }
+}
+
+
+/**
+ * Return true if the NAV FROM flag should be active.
+ */
+bool
+FGNavRadio::get_nav_from_flag () const
+{
+ if ( nav_inrange
+ && nav_serviceable->getBoolValue()
+ && tofrom_serviceable->getBoolValue() ) {
+ double offset = fabs(nav_radial - nav_target_radial);
+ if (nav_loc) {
+ return false;
+ } else {
+ return !(offset > 90.0 && offset < 270.0);
+ }
+ } else {
+ return false;
+ }
+}
+
+
+/**
+ * Return the true heading to station
+ */
+double
+FGNavRadio::get_nav_heading () const
+{
+ return nav_heading;
+}
+
+
+/**
+ * Return the current radial.
+ */
+double
+FGNavRadio::get_nav_radial () const
+{
+ return nav_radial;
+}
+
+double
+FGNavRadio::get_nav_reciprocal_radial () const
+{
+ double recip = nav_radial + 180;
+ if ( recip >= 360 ) {
+ recip -= 360;
+ }
+ return recip;
+}
--- /dev/null
+// navradio.hxx -- class to manage a nav radio instance
+//
+// Written by Curtis Olson, started April 2000.
+//
+// Copyright (C) 2000 - 2002 Curtis L. Olson - http://www.flightgear.org/~curt
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _FG_NAVRADIO_HXX
+#define _FG_NAVRADIO_HXX
+
+
+#include <Main/fg_props.hxx>
+
+#include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
+#include <simgear/math/interpolater.hxx>
+#include <simgear/timing/timestamp.hxx>
+
+#include <Navaids/navlist.hxx>
+#include <Sound/morse.hxx>
+
+class FGNavRadio : public SGSubsystem
+{
+ FGMorse morse;
+
+ SGInterpTable *term_tbl;
+ SGInterpTable *low_tbl;
+ SGInterpTable *high_tbl;
+
+ SGPropertyNode *lon_node;
+ SGPropertyNode *lat_node;
+ SGPropertyNode *alt_node;
+ SGPropertyNode *bus_power;
+ SGPropertyNode *nav_serviceable;
+ SGPropertyNode *cdi_serviceable, *gs_serviceable, *tofrom_serviceable;
+
+ string last_nav_id;
+ bool last_nav_vor;
+ int nav_play_count;
+ time_t nav_last_time;
+
+ int index; // used for property binding
+ char nav_fx_name[256];
+ char dme_fx_name[256];
+
+ bool need_update;
+
+ bool power_btn;
+ bool audio_btn;
+
+ string nav_id;
+ string nav_trans_ident;
+ bool nav_valid;
+ bool nav_inrange;
+ bool nav_has_dme;
+ bool nav_has_gs;
+ bool nav_loc;
+ double nav_freq;
+ double nav_alt_freq;
+ double nav_heading; // true heading to nav station
+ double nav_radial; // current radial we are on (taking
+ // into consideration the vor station
+ // alignment which likely doesn't
+ // match the magnetic alignment
+ // exactly.)
+ double nav_sel_radial;
+ double nav_target_radial;
+ double nav_target_radial_true;
+ double nav_target_auto_hdg;
+ double nav_loclon;
+ double nav_loclat;
+ double nav_x;
+ double nav_y;
+ double nav_z;
+ double nav_loc_dist;
+ double nav_gslon;
+ double nav_gslat;
+ double nav_elev; // use gs elev if available
+ double nav_gs_x;
+ double nav_gs_y;
+ double nav_gs_z;
+ sgdVec3 gs_base_vec;
+ double nav_gs_dist;
+ double nav_gs_dist_signed;
+ double nav_gs_rate_of_climb;
+ SGTimeStamp prev_time;
+ SGTimeStamp curr_time;
+ double nav_range;
+ double nav_effective_range;
+ double nav_target_gs;
+ double nav_twist;
+ double nav_vol_btn;
+ bool nav_ident_btn;
+ double horiz_vel;
+ double last_x;
+
+ string name;
+ int num;
+
+ // internal periodic station search timer
+ double _time_before_search_sec;
+
+ // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
+ double adjustNavRange( double stationElev, double aircraftElev,
+ double nominalRange );
+
+ // model standard ILS service volumes as per AIM 1-1-9
+ double adjustILSRange( double stationElev, double aircraftElev,
+ double offsetDegrees, double distance );
+
+public:
+
+ FGNavRadio(SGPropertyNode *node);
+ ~FGNavRadio();
+
+ void init ();
+ void bind ();
+ void unbind ();
+ void update (double dt);
+
+ // Update nav/adf radios based on current postition
+ void search ();
+
+ inline void set_bind_index( int i ) {
+ index = i;
+ sprintf( nav_fx_name, "nav%d-vor-ident", index );
+ sprintf( dme_fx_name, "dme%d-vor-ident", index );
+ }
+
+ // NavCom Setters
+ inline void set_power_btn( bool val ) { power_btn = val; }
+ inline void set_audio_btn( bool val ) { audio_btn = val; }
+
+ // NAV Setters
+ inline void set_nav_freq( double freq ) {
+ nav_freq = freq; need_update = true;
+ }
+ inline void set_nav_alt_freq( double freq ) { nav_alt_freq = freq; }
+ inline void set_nav_sel_radial( double radial ) {
+ nav_sel_radial = radial; need_update = true;
+ }
+ inline void set_nav_vol_btn( double val ) {
+ if ( val < 0.0 ) val = 0.0;
+ if ( val > 1.0 ) val = 1.0;
+ nav_vol_btn = val;
+ }
+ inline void set_nav_ident_btn( bool val ) { nav_ident_btn = val; }
+
+ // NavCom Accessors
+ inline bool has_power() const {
+ return power_btn && (bus_power->getDoubleValue() > 1.0);
+ }
+ inline bool get_power_btn() const { return power_btn; }
+ inline bool get_audio_btn() const { return audio_btn; }
+
+ // NAV Accessors
+ inline double get_nav_freq () const { return nav_freq; }
+ inline double get_nav_alt_freq () const { return nav_alt_freq; }
+ inline double get_nav_sel_radial() const { return nav_sel_radial; }
+ inline double get_nav_target_radial() const { return nav_target_radial; }
+ inline double get_nav_target_radial_true() const {
+ return nav_target_radial_true;
+ }
+ inline double get_nav_target_auto_hdg() const {
+ return nav_target_auto_hdg;
+ }
+
+ // Calculated values.
+ inline bool get_nav_inrange() const { return nav_inrange; }
+ bool get_nav_to_flag () const;
+ bool get_nav_from_flag () const;
+ inline bool get_nav_has_dme() const { return nav_has_dme; }
+ inline bool get_nav_dme_inrange () const {
+ return nav_inrange && nav_has_dme;
+ }
+ inline bool get_nav_has_gs() const { return nav_has_gs; }
+ inline bool get_nav_loc() const { return nav_loc; }
+ inline double get_nav_loclon() const { return nav_loclon; }
+ inline double get_nav_loclat() const { return nav_loclat; }
+ inline double get_nav_loc_dist() const { return nav_loc_dist; }
+ inline double get_nav_gslon() const { return nav_gslon; }
+ inline double get_nav_gslat() const { return nav_gslat; }
+ inline double get_nav_gs_dist() const { return nav_gs_dist; }
+ inline double get_nav_gs_dist_signed() const { return nav_gs_dist_signed; }
+ inline double get_nav_gs_rate_of_climb() const {
+ return nav_gs_rate_of_climb;
+ }
+ inline double get_nav_elev() const { return nav_elev; }
+ double get_nav_heading() const;
+ double get_nav_radial() const;
+ double get_nav_reciprocal_radial() const;
+ inline double get_nav_target_gs() const { return nav_target_gs; }
+ inline double get_nav_twist() const { return nav_twist; }
+ double get_nav_cdi_deflection() const;
+ double get_nav_cdi_xtrack_error() const;
+ double get_nav_gs_deflection() const;
+ inline double get_nav_vol_btn() const { return nav_vol_btn; }
+ inline bool get_nav_ident_btn() const { return nav_ident_btn; }
+ inline const char * get_nav_id() const { return nav_id.c_str(); }
+ inline int get_nav_id_c1() const { return nav_id.c_str()[0]; }
+ inline int get_nav_id_c2() const { return nav_id.c_str()[1]; }
+ inline int get_nav_id_c3() const { return nav_id.c_str()[2]; }
+ inline int get_nav_id_c4() const { return nav_id.c_str()[3]; }
+};
+
+
+#endif // _FG_NAVRADIO_HXX
projects / flightgear.git / commitdiff