}
-TACAN::TACAN ( SGPropertyNode *node )
- : _last_distance_nm(0),
- _last_frequency_mhz(-1),
- _time_before_search_sec(0),
- _mobile_valid(false),
- _transmitter_valid(false),
- _transmitter_pos(SGGeod::fromDeg(0, 0)),
- _transmitter_range_nm(0),
- _transmitter_bias(0.0),
- _name("tacan"),
- _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_DEBUG, "Error in TACAN config logic" );
- if ( _name.length() ) {
- SG_LOG( SG_INSTR, SG_DEBUG, "Section = " << _name );
- }
- }
- }
-}
-
-TACAN::TACAN ()
- : _last_distance_nm(0),
- _last_frequency_mhz(-1),
- _time_before_search_sec(0),
- _mobile_valid(false),
- _transmitter_valid(false),
- _transmitter_pos(SGGeod::fromDeg(0, 0)),
- _transmitter_range_nm(0),
- _transmitter_bearing_deg(0),
- _transmitter_bias(0.0),
- _transmitter_name(""),
- _name("tacan"),
- _num(0)
+TACAN::TACAN ( SGPropertyNode *node ) :
+ _name(node->getStringValue("name", "tacan")),
+ _num(node->getIntValue("number", 0)),
+ _new_frequency(false),
+ _channel("0000"),
+ _last_distance_nm(0),
+ _frequency_mhz(-1),
+ _time_before_search_sec(0),
+ _mobile_valid(false),
+ _transmitter_valid(false),
+ _transmitter_pos(SGGeod::fromDeg(0, 0)),
+ _transmitter_range_nm(0),
+ _transmitter_bias(0.0),
+ _listener_active(0)
{
}
SGPropertyNode *node = fgGetNode(branch.c_str(), _num, true );
- _longitude_node = fgGetNode("/position/longitude-deg", true);
- _latitude_node = fgGetNode("/position/latitude-deg", true);
- _altitude_node = fgGetNode("/position/altitude-ft", true);
- _heading_node = fgGetNode("/orientation/heading-deg", true);
- _yaw_node = fgGetNode("/orientation/side-slip-deg", true);
_serviceable_node = node->getChild("serviceable", 0, true);
- _electrical_node = fgGetNode("/systems/electrical/outputs/tacan", true);
_ident_node = node->getChild("ident", 0, true);
+
SGPropertyNode *fnode = node->getChild("frequencies", 0, true);
- _source_node = fnode->getChild("source", 0, true);
_frequency_node = fnode->getChild("selected-mhz", 0, true);
- _channel_node = fnode->getChild("selected-channel", 0, true);
- fnode->getChild("selected-channel", 1, true);
- fnode->getChild("selected-channel", 2, true);
- fnode->getChild("selected-channel", 3, true);
- fnode->getChild("selected-channel", 4, true);
+
+ _channel_in0_node = fnode->getChild("selected-channel", 0, true);
+ _channel_in1_node = fnode->getChild("selected-channel", 1, true);
+ _channel_in2_node = fnode->getChild("selected-channel", 2, true);
+ _channel_in3_node = fnode->getChild("selected-channel", 3, true);
+ _channel_in4_node = fnode->getChild("selected-channel", 4, true);
+
+ _channel_in0_node->addChangeListener(this);
+ _channel_in1_node->addChangeListener(this);
+ _channel_in2_node->addChangeListener(this);
+ _channel_in3_node->addChangeListener(this);
+ _channel_in4_node->addChangeListener(this, true);
+
_in_range_node = node->getChild("in-range", 0, true);
_distance_node = node->getChild("indicated-distance-nm", 0, true);
_speed_node = node->getChild("indicated-ground-speed-kt", 0, true);
_time_node = node->getChild("indicated-time-min", 0, true);
_name_node = node->getChild("name", 0, true);
_bearing_node = node->getChild("indicated-bearing-true-deg", 0, true);
+
SGPropertyNode *dnode = node->getChild("display", 0, true);
_x_shift_node = dnode->getChild("x-shift", 0, true);
_y_shift_node = dnode->getChild("y-shift", 0, true);
SGPropertyNode *mnode = fgGetNode("/ai/models/multiplayer", _num, false);
_mp_callsign_node = mnode ? mnode->getChild("callsign", 0, false) : 0;
+
+ _longitude_node = fgGetNode("/position/longitude-deg", true);
+ _latitude_node = fgGetNode("/position/latitude-deg", true);
+ _altitude_node = fgGetNode("/position/altitude-ft", true);
+ _heading_node = fgGetNode("/orientation/heading-deg", true);
+ _yaw_node = fgGetNode("/orientation/side-slip-deg", true);
+ _electrical_node = fgGetNode("/systems/electrical/outputs/tacan", true);
}
void
TACAN::update (double delta_time_sec)
{
- double az2 = 0;
- double bearing = 0;
- double distance = 0;
- double mobile_az2 = 0;
- double mobile_bearing = 0;
- double mobile_distance = 0;
- double frequency_mhz = 0;
-
- // If it's off, don't waste any time.
if (!_serviceable_node->getBoolValue() || !_electrical_node->getBoolValue()) {
_last_distance_nm = 0;
_in_range_node->setBoolValue(false);
return;
}
- // Figure out the source
- const char * source = _source_node->getStringValue();
-
- if (source[0] == '\0') {
- string branch;
- branch = "/instrumentation/" + _name + "/frequencies/selected-channel";
- _source_node->setStringValue(branch.c_str());
- source = _source_node->getStringValue();
- SG_LOG( SG_INSTR, SG_DEBUG, "source " << source );
- }
- // Get the channel FIXME always from instrument #1 ??
- string channel_1 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[1]");
- string channel_2 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[2]");
- string channel_3 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[3]");
- string channel_4 = fgGetString("/instrumentation/tacan/frequencies/selected-channel[4]");
-
- SG_LOG( SG_INSTR, SG_DEBUG, "channels " << channel_1 << channel_2 << channel_3 << channel_4);
-
- string channel = channel_1 + channel_2 + channel_3 + channel_4;
-
- // Get the frequency
- frequency_mhz = _last_frequency_mhz;
- if (channel != _last_channel) {
- _time_before_search_sec = 0;
- _last_channel = channel;
- frequency_mhz = searchChannel(channel);
- SG_LOG( SG_INSTR, SG_DEBUG, "frequency " << frequency_mhz );
- _frequency_node->setDoubleValue(frequency_mhz);
- }
-
- SG_LOG( SG_INSTR, SG_DEBUG, "channel " << channel );
// Get the aircraft position
double longitude_deg = _longitude_node->getDoubleValue();
double latitude_deg = _latitude_node->getDoubleValue();
// On timeout, scan again
_time_before_search_sec -= delta_time_sec;
- if (_time_before_search_sec < 0 && frequency_mhz >= 0
- || frequency_mhz != _last_frequency_mhz) {
- search(frequency_mhz, longitude_rad, latitude_rad, altitude_m);
- _last_frequency_mhz = frequency_mhz;
- }
+ if ((_time_before_search_sec < 0 || _new_frequency) && _frequency_mhz >= 0)
+ search(_frequency_mhz, longitude_rad, latitude_rad, altitude_m);
// Calculate the distance to the transmitter
//calculate the bearing and range of the mobile from the aircraft
+ double mobile_az2 = 0;
+ double mobile_bearing = 0;
+ double mobile_distance = 0;
+
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_lat " << _mobile_lat);
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_lon " << _mobile_lon);
SG_LOG( SG_INSTR, SG_DEBUG, "carrier_name " << _mobile_name);
_mobile_lon,
&mobile_bearing, &mobile_az2, &mobile_distance);
+
//calculate the bearing and range of the station from the aircraft
+ double az2 = 0;
+ double bearing = 0;
+ double distance = 0;
+
SGGeod pos = SGGeod::fromDegM(longitude_deg, latitude_deg, altitude_m);
geo_inverse_wgs_84(pos, _transmitter_pos,
&bearing, &az2, &distance);
_name_node->setStringValue(_transmitter_name.c_str());
_transmitter_ident = _mobile_ident;
_ident_node->setStringValue(_transmitter_ident.c_str());
- _channel_node->setStringValue(channel.c_str());
+ _channel_node->setStringValue(_channel.c_str());
}
//// calculate some values for boresight display
_name_node->setStringValue(_transmitter_name.c_str());
_transmitter_ident = "";
_ident_node->setStringValue(_transmitter_ident.c_str());
- _channel_node->setStringValue(channel.c_str());
+ _channel_node->setStringValue(_channel.c_str());
return;
}
} // end function update
return frequency_khz = 0;
} // end TACAN::searchChannel
+/*
+ * Listener callback. Maintains channel input properties,
+ * searches new channel frequency, updates _channel and
+ * _frequency and sets boolean _new_frequency appropriately.
+ */
+void
+TACAN::valueChanged(SGPropertyNode *prop)
+{
+ if (_listener_active)
+ return;
+ _listener_active++;
+
+ int index = prop->getIndex();
+ string channel = _channel;
+
+ if (index) { // channel digit or X/Y input
+ int c;
+ if (isdigit(c = _channel_in1_node->getStringValue()[0]))
+ channel[0] = c;
+ if (isdigit(c = _channel_in2_node->getStringValue()[0]))
+ channel[1] = c;
+ if (isdigit(c = _channel_in3_node->getStringValue()[0]))
+ channel[2] = c;
+ c = _channel_in4_node->getStringValue()[0];
+ if (c == 'X' || c == 'Y')
+ channel[3] = c;
+
+ } else { // channel number input
+ unsigned int f = prop->getIntValue();
+ if (f >= 1 && f <= 126) {
+ channel[0] = '0' + (f / 100) % 10;
+ channel[1] = '0' + (f / 10) % 10;
+ channel[2] = '0' + f % 10;
+ }
+ }
+
+ if (channel != _channel) {
+ SG_LOG(SG_INSTR, SG_DEBUG, "new channel " << channel);
+
+ // write back result
+ _channel_in0_node->setIntValue((channel[0] - '0') * 100
+ + (channel[1] - '0') * 10 + (channel[2] - '0'));
+ char s[2] = "0";
+ s[0] = channel[0], _channel_in1_node->setStringValue(s);
+ s[0] = channel[1], _channel_in2_node->setStringValue(s);
+ s[0] = channel[2], _channel_in3_node->setStringValue(s);
+ s[0] = channel[3], _channel_in4_node->setStringValue(s);
+
+ // search channel frequency
+ double freq = searchChannel(channel);
+ if (freq != _frequency_mhz) {
+ SG_LOG(SG_INSTR, SG_DEBUG, "new frequency " << freq);
+ _frequency_node->setDoubleValue(freq);
+ _frequency_mhz = freq;
+ _new_frequency = true;
+ }
+
+ _channel = channel;
+ _time_before_search_sec = 0;
+ }
+
+ _listener_active--;
+}
+
// end of TACAN.cxx
projects / flightgear.git / commitdiff