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/morse.hxx>
40 class FGNavCom : public FGSubsystem
44 SGInterpTable *term_tbl;
45 SGInterpTable *low_tbl;
46 SGInterpTable *high_tbl;
48 SGPropertyNode *lon_node;
49 SGPropertyNode *lat_node;
50 SGPropertyNode *alt_node;
57 int index; // used for property binding
58 char nav_fx_name[256];
59 char dme_fx_name[256];
77 double comm_effective_range;
80 string nav_trans_ident;
89 double nav_sel_radial;
102 SGTimeStamp prev_time;
103 SGTimeStamp curr_time;
106 double nav_effective_range;
108 double nav_target_gs;
113 // model standard VOR/DME/TACAN service volumes as per AIM 1-1-8
114 double adjustNavRange( double stationElev, double aircraftElev,
115 double nominalRange );
117 // model standard ILS service volumes as per AIM 1-1-9
118 double adjustILSRange( double stationElev, double aircraftElev,
119 double offsetDegrees, double distance );
129 void update (double dt);
131 // Update nav/adf radios based on current postition
134 inline void set_bind_index( int i ) {
136 sprintf( nav_fx_name, "nav%d-vor-ident", index );
137 sprintf( dme_fx_name, "dme%d-vor-ident", index );
141 inline void set_power_btn( bool val ) {
147 inline void set_comm_freq( double freq ) {
148 comm_freq = freq; need_update = true;
150 inline void set_comm_alt_freq( double freq ) { comm_alt_freq = freq; }
151 inline void set_comm_vol_btn( double val ) {
152 if ( val < 0.0 ) val = 0.0;
153 if ( val > 1.0 ) val = 1.0;
156 inline void set_comm_ident_btn( bool val ) { comm_ident_btn = val; }
159 inline void set_nav_freq( double freq ) {
160 nav_freq = freq; need_update = true;
162 inline void set_nav_alt_freq( double freq ) { nav_alt_freq = freq; }
163 inline void set_nav_sel_radial( double radial ) {
164 nav_sel_radial = radial; need_update = true;
166 inline void set_nav_vol_btn( double val ) {
167 if ( val < 0.0 ) val = 0.0;
168 if ( val > 1.0 ) val = 1.0;
171 inline void set_nav_ident_btn( bool val ) { nav_ident_btn = val; }
174 inline bool get_power_btn() const { return power_btn; }
177 inline double get_comm_freq () const { return comm_freq; }
178 inline double get_comm_alt_freq () const { return comm_alt_freq; }
181 inline double get_nav_freq () const { return nav_freq; }
182 inline double get_nav_alt_freq () const { return nav_alt_freq; }
183 inline double get_nav_sel_radial() const { return nav_sel_radial; }
185 // Calculated values.
186 inline bool get_comm_inrange() const { return comm_inrange; }
187 inline double get_comm_vol_btn() const { return comm_vol_btn; }
188 inline bool get_comm_ident_btn() const { return comm_ident_btn; }
190 inline bool get_nav_inrange() const { return nav_inrange; }
191 bool get_nav_to_flag () const;
192 bool get_nav_from_flag () const;
193 inline bool get_nav_has_dme() const { return nav_has_dme; }
194 inline bool get_nav_dme_inrange () const {
195 return nav_inrange && nav_has_dme;
197 inline bool get_nav_has_gs() const { return nav_has_gs; }
198 inline bool get_nav_loc() const { return nav_loc; }
199 inline double get_nav_loclon() const { return nav_loclon; }
200 inline double get_nav_loclat() const { return nav_loclat; }
201 inline double get_nav_loc_dist() const { return nav_loc_dist; }
202 inline double get_nav_gslon() const { return nav_gslon; }
203 inline double get_nav_gslat() const { return nav_gslat; }
204 inline double get_nav_gs_dist() const { return nav_gs_dist; }
205 inline double get_nav_elev() const { return nav_elev; }
206 inline double get_nav_heading() const { return nav_heading; }
207 inline double get_nav_radial() const { return nav_radial; }
208 inline double get_nav_target_gs() const { return nav_target_gs; }
209 inline double get_nav_magvar() const { return nav_magvar; }
210 double get_nav_heading_needle_deflection() const;
211 double get_nav_gs_needle_deflection() const;
212 inline double get_nav_vol_btn() const { return nav_vol_btn; }
213 inline bool get_nav_ident_btn() const { return nav_ident_btn; }
217 #endif // _FG_NAVCOM_HXX