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Expose a radio function (receiveBeacon) to the Nasal subsystem

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This commit is contained in:
adrian 2011-12-06 21:03:40 +02:00
parent 4826b21968
commit 971c2820b9
3 changed files with 45 additions and 1 deletions
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22
src/Radio/radio.cxx
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@ -115,6 +115,28 @@ double FGRadioTransmission::receiveNav(SGGeod tx_pos, double freq, int transmiss
}
double FGRadioTransmission::receiveBeacon(double lat, double lon, double elev, double heading, double pitch) {
_transmitter_power = 36;
_tx_antenna_height += 0.0;
_tx_antenna_gain += 0.5;
elev = elev * SG_FEET_TO_METER;
double freq = _root_node->getDoubleValue("station[0]/frequency", 118.0);
int ground_to_air = 1;
string text = "Beacon1";
double comm1 = getFrequency(1);
double comm2 = getFrequency(2);
if ( !(fabs(freq - comm1) <= 0.0001) && !(fabs(freq - comm2) <= 0.0001) ) {
return -1;
}
SGGeod tx_pos = SGGeod::fromDegM( lon, lat, elev );
double signal = ITM_calculate_attenuation(tx_pos, freq, ground_to_air);
return signal;
}
/*** Receive ATC radio communication as text
***/
void FGRadioTransmission::receiveATC(SGGeod tx_pos, double freq, string text, int ground_to_air) {

2
src/Radio/radio.hxx
View file

@ -92,7 +92,7 @@ public:
// returns signal quality
// transmission_type: 0 for VOR, 1 for ILS
double receiveNav(SGGeod tx_pos, double freq, int transmission_type);
double receiveBeacon(double lat, double lon, double elev, double heading, double pitch);
};

22
src/Scripting/NasalSys.cxx
View file

@ -33,6 +33,7 @@
#include <Scenery/scenery.hxx>
#include <Navaids/navlist.hxx>
#include <Navaids/procedure.hxx>
#include <Radio/radio.hxx>
#include "NasalSys.hxx"
@ -500,6 +501,26 @@ static naRef f_carttogeod(naContext c, naRef me, int argc, naRef* args)
return vec;
}
// Convert a cartesian point to a geodetic lat/lon/altitude.
static naRef f_radioTransmission(naContext c, naRef me, int argc, naRef* args)
{
double lat, lon, elev, heading, pitch;
if(argc != 5) naRuntimeError(c, "radioTransmission() expects 5 arguments");
for(int i=0; i<argc; i++) {
if(naIsNil(args[i]))
return naNil();
}
lat = naNumValue(args[0]).num;
lon = naNumValue(args[1]).num;
elev = naNumValue(args[2]).num;
heading = naNumValue(args[3]).num;
pitch = naNumValue(args[4]).num;
FGRadioTransmission *radio = new FGRadioTransmission;
double signal = radio->receiveBeacon(lat,lon,elev,heading,pitch);
delete radio;
return naNum(signal);
}
// Convert a geodetic lat/lon/altitude to a cartesian point.
static naRef f_geodtocart(naContext c, naRef me, int argc, naRef* args)
{
@ -805,6 +826,7 @@ static struct { const char* name; naCFunction func; } funcs[] = {
{ "geodinfo", f_geodinfo },
{ "airportinfo", f_airportinfo },
{ "navinfo", f_navinfo },
{ "radioTransmission", f_radioTransmission },
{ 0, 0 }
};