118 lines
3 KiB
C++
118 lines
3 KiB
C++
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// dme.hxx -- class to manage an instance of the DME
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//
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// Written by Curtis Olson, started April 2000.
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//
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// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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#ifndef _FG_DME_HXX
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#define _FG_DME_HXX
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#include <Main/fgfs.hxx>
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#include <Main/fg_props.hxx>
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#include <simgear/compiler.h>
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// #include <simgear/math/interpolater.hxx>
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#include <simgear/timing/timestamp.hxx>
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#include <Navaids/ilslist.hxx>
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#include <Navaids/navlist.hxx>
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// #include <Sound/beacon.hxx>
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#include <Sound/morse.hxx>
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// #include "kr_87.hxx" // ADF
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// #include "kt_70.hxx" // Transponder
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// #include "navcom.hxx"
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class FGDME : public FGSubsystem
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{
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SGPropertyNode *lon_node;
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SGPropertyNode *lat_node;
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SGPropertyNode *alt_node;
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SGPropertyNode *bus_power;
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SGPropertyNode *navcom1_bus_power, *navcom2_bus_power;
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SGPropertyNode *navcom1_power_btn, *navcom2_power_btn;
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SGPropertyNode *navcom1_freq, *navcom2_freq;
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bool need_update;
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bool valid;
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int switch_pos;
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bool inrange;
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double freq;
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double lon;
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double lat;
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double elev;
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double range;
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double effective_range;
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double x;
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double y;
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double z;
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double dist;
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double prev_dist;
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double spd;
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double ete;
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SGTimeStamp last_time;
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public:
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FGDME();
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~FGDME();
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void init ();
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void bind ();
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void unbind ();
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void update (double dt);
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// Update dme based on current postition
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void search ();
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// DME Setters
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inline void set_freq (double freq) {
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freq = freq; need_update = true;
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}
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// DME Accessors
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inline bool has_power() const {
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return (switch_pos == 1 || switch_pos == 3)
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&& (bus_power->getDoubleValue() > 1.0);
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}
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inline bool navcom1_on() const {
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return (navcom1_bus_power->getDoubleValue() > 1.0)
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&& navcom1_power_btn->getBoolValue();
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}
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inline bool navcom2_on() const {
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return (navcom2_bus_power->getDoubleValue() > 1.0)
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&& navcom2_power_btn->getBoolValue();
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}
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inline double get_freq () const { return freq; }
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// Calculated values.
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inline bool get_inrange () const { return inrange; }
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inline double get_dist () const { return dist; }
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inline double get_spd () const { return spd; }
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inline double get_ete () const { return ete; }
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};
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#endif // _FG_DME_HXX
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