1 // navcom.hxx -- class to manage a navcom instance
3 // Written by Curtis Olson, started April 2000.
5 // Copyright (C) 2000 - 2002 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #ifndef _FG_NAVCOM_HXX
25 #define _FG_NAVCOM_HXX
28 #include <Main/fgfs.hxx>
29 #include <Main/fg_props.hxx>
31 #include <simgear/compiler.h>
33 #include <simgear/math/interpolater.hxx>
34 #include <simgear/timing/timestamp.hxx>
36 #include <Navaids/ilslist.hxx>
37 #include <Navaids/navlist.hxx>
38 #include <Sound/beacon.hxx>
39 #include <Sound/morse.hxx>
41 class FGNavCom : public FGSubsystem
46 SGInterpTable *term_tbl;
47 SGInterpTable *low_tbl;
48 SGInterpTable *high_tbl;
50 SGPropertyNode *lon_node;
51 SGPropertyNode *lat_node;
52 SGPropertyNode *alt_node;
54 string last_nav_ident;
59 int index; // used for property binding
60 char nav_fx_name[256];
61 char dme_fx_name[256];
78 double comm_effective_range;
81 string nav_trans_ident;
90 double nav_sel_radial;
103 SGTimeStamp prev_time;
104 SGTimeStamp curr_time;
107 double nav_effective_range;
109 double nav_target_gs;
114 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
115 double adjustNavRange( double stationElev, double aircraftElev,
116 double nominalRange );
118 // model standard ILS service volumes as per AIM 1-1-9
119 double adjustILSRange( double stationElev, double aircraftElev,
120 double offsetDegrees, double distance );
130 void update (double dt);
132 // Update nav/adf radios based on current postition
135 inline void set_bind_index( int i ) {
137 sprintf( nav_fx_name, "nav%d-vor-ident", index );
138 sprintf( dme_fx_name, "dme%d-vor-ident", index );
142 inline void set_comm_freq( double freq ) {
143 comm_freq = freq; need_update = true;
145 inline void set_comm_alt_freq( double freq ) { comm_alt_freq = freq; }
146 inline void set_comm_vol_btn( double val ) {
147 if ( val < 0.0 ) val = 0.0;
148 if ( val > 1.0 ) val = 1.0;
151 inline void set_comm_ident_btn( bool val ) { comm_ident_btn = val; }
154 inline void set_nav_freq( double freq ) {
155 nav_freq = freq; need_update = true;
157 inline void set_nav_alt_freq( double freq ) { nav_alt_freq = freq; }
158 inline void set_nav_sel_radial( double radial ) {
159 nav_sel_radial = radial; need_update = true;
161 inline void set_nav_vol_btn( double val ) {
162 if ( val < 0.0 ) val = 0.0;
163 if ( val > 1.0 ) val = 1.0;
166 inline void set_nav_ident_btn( bool val ) { nav_ident_btn = val; }
169 inline double get_comm_freq () const { return comm_freq; }
170 inline double get_comm_alt_freq () const { return comm_alt_freq; }
173 inline double get_nav_freq () const { return nav_freq; }
174 inline double get_nav_alt_freq () const { return nav_alt_freq; }
175 inline double get_nav_sel_radial() const { return nav_sel_radial; }
177 // Calculated values.
178 inline bool get_comm_inrange() const { return comm_inrange; }
179 inline double get_comm_vol_btn() const { return comm_vol_btn; }
180 inline bool get_comm_ident_btn() const { return comm_ident_btn; }
182 inline bool get_nav_inrange() const { return nav_inrange; }
183 bool get_nav_to_flag () const;
184 bool get_nav_from_flag () const;
185 inline bool get_nav_has_dme() const { return nav_has_dme; }
186 inline bool get_nav_dme_inrange () const {
187 return nav_inrange && nav_has_dme;
189 inline bool get_nav_has_gs() const { return nav_has_gs; }
190 inline bool get_nav_loc() const { return nav_loc; }
191 inline double get_nav_loclon() const { return nav_loclon; }
192 inline double get_nav_loclat() const { return nav_loclat; }
193 inline double get_nav_loc_dist() const { return nav_loc_dist; }
194 inline double get_nav_gslon() const { return nav_gslon; }
195 inline double get_nav_gslat() const { return nav_gslat; }
196 inline double get_nav_gs_dist() const { return nav_gs_dist; }
197 inline double get_nav_elev() const { return nav_elev; }
198 inline double get_nav_heading() const { return nav_heading; }
199 inline double get_nav_radial() const { return nav_radial; }
200 inline double get_nav_target_gs() const { return nav_target_gs; }
201 inline double get_nav_magvar() const { return nav_magvar; }
202 double get_nav_heading_needle_deflection() const;
203 double get_nav_gs_needle_deflection() const;
204 inline double get_nav_vol_btn() const { return nav_vol_btn; }
205 inline bool get_nav_ident_btn() const { return nav_ident_btn; }
209 #endif // _FG_NAVCOM_HXX