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flightgear/src/Cockpit/dme.hxx

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2002-09-26 15:34:00 +00:00
// dme.hxx -- class to manage an instance of the DME
//
// Written by Curtis Olson, started April 2000.
//
// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
//
// 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_DME_HXX
#define _FG_DME_HXX
#include <Main/fg_props.hxx>
#include <simgear/compiler.h>
#include <simgear/structure/subsystem_mgr.hxx>
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// #include <simgear/math/interpolater.hxx>
#include <simgear/timing/timestamp.hxx>
#include <Navaids/ilslist.hxx>
#include <Navaids/navlist.hxx>
// #include <Sound/beacon.hxx>
#include <Sound/morse.hxx>
// #include "kr_87.hxx" // ADF
// #include "kt_70.hxx" // Transponder
// #include "navcom.hxx"
class FGDME : public SGSubsystem
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{
SGPropertyNode *lon_node;
SGPropertyNode *lat_node;
SGPropertyNode *alt_node;
SGPropertyNode *bus_power;
SGPropertyNode *navcom1_bus_power, *navcom2_bus_power;
SGPropertyNode *navcom1_power_btn, *navcom2_power_btn;
SGPropertyNode *navcom1_freq, *navcom2_freq;
bool need_update;
bool valid;
int switch_pos;
bool inrange;
double freq;
double lon;
double lat;
double elev;
double range;
double effective_range;
double x;
double y;
double z;
double dist;
double prev_dist;
double spd;
double ete;
SGTimeStamp last_time;
public:
FGDME();
~FGDME();
void init ();
void bind ();
void unbind ();
void update (double dt);
// Update dme based on current postition
void search ();
// DME Setters
inline void set_freq (double freq) {
freq = freq; need_update = true;
}
// DME Accessors
inline bool has_power() const {
return (switch_pos > 0)
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&& (bus_power->getDoubleValue() > 1.0);
}
inline bool navcom1_on() const {
return (navcom1_bus_power->getDoubleValue() > 1.0)
&& navcom1_power_btn->getBoolValue();
}
inline bool navcom2_on() const {
return (navcom2_bus_power->getDoubleValue() > 1.0)
&& navcom2_power_btn->getBoolValue();
}
inline double get_freq () const { return freq; }
// Calculated values.
inline bool get_inrange () const { return inrange; }
inline double get_dist () const { return dist; }
inline double get_spd () const { return spd; }
inline double get_ete () const { return ete; }
};
#endif // _FG_DME_HXX