+ return 0;
+ }
+ } else {
+ return 0;
+ }
+
+ return "";
+}
+
+static const char* navaidGhostGetMember(naContext c, void* g, naRef field, naRef* out)
+{
+ const char* fieldName = naStr_data(field);
+ FGNavRecord* nav = (FGNavRecord*) g;
+
+ if (!strcmp(fieldName, "id")) *out = stringToNasal(c, nav->ident());
+ else if (!strcmp(fieldName, "name")) *out = stringToNasal(c, nav->name());
+ else if (!strcmp(fieldName, "lat")) *out = naNum(nav->get_lat());
+ else if (!strcmp(fieldName, "lon")) *out = naNum(nav->get_lon());
+ else if (!strcmp(fieldName, "elevation")) {
+ *out = naNum(nav->get_elev_ft() * SG_FEET_TO_METER);
+ } else if (!strcmp(fieldName, "type")) {
+ *out = stringToNasal(c, nav->nameForType(nav->type()));
+ } else if (!strcmp(fieldName, "frequency")) {
+ *out = naNum(nav->get_freq());
+ } else if (!strcmp(fieldName, "range_nm")) {
+ *out = naNum(nav->get_range());
+ } else if (!strcmp(fieldName, "course")) {
+ if ((nav->type() == FGPositioned::ILS) || (nav->type() == FGPositioned::LOC)) {
+ double radial = nav->get_multiuse();
+ SG_NORMALIZE_RANGE(radial, 0.0, 360.0);
+ *out = naNum(radial);
+ } else {
+ *out = naNil();
+ }
+ } else {
+ return 0;
+ }
+
+ return "";
+}
+
+static const char* fixGhostGetMember(naContext c, void* g, naRef field, naRef* out)
+{
+ const char* fieldName = naStr_data(field);
+ FGFix* fix = (FGFix*) g;
+
+ if (!strcmp(fieldName, "id")) *out = stringToNasal(c, fix->ident());
+ else if (!strcmp(fieldName, "lat")) *out = naNum(fix->get_lat());
+ else if (!strcmp(fieldName, "lon")) *out = naNum(fix->get_lon());
+ else {
+ return 0;
+ }
+
+ return "";
+}
+
+static bool hashIsCoord(naRef h)
+{
+ naRef parents = naHash_cget(h, (char*) "parents");
+ if (!naIsVector(parents)) {
+ return false;
+ }
+
+ return naEqual(naVec_get(parents, 0), geoCoordClass) != 0;
+}
+
+bool geodFromHash(naRef ref, SGGeod& result)
+{
+ if (!naIsHash(ref)) {
+ return false;
+ }
+
+
+// check for manual latitude / longitude names
+ naRef lat = naHash_cget(ref, (char*) "lat");
+ naRef lon = naHash_cget(ref, (char*) "lon");
+ if (naIsNum(lat) && naIsNum(lon)) {
+ result = SGGeod::fromDeg(naNumValue(lon).num, naNumValue(lat).num);
+ return true;
+ }
+
+ if (hashIsCoord(ref)) {
+ naRef lat = naHash_cget(ref, (char*) "_lat");
+ naRef lon = naHash_cget(ref, (char*) "_lon");
+ if (naIsNum(lat) && naIsNum(lon)) {
+ result = SGGeod::fromRad(naNumValue(lon).num, naNumValue(lat).num);
+ return true;
+ }
+ }
+
+// check for any synonyms?
+ // latitude + longitude?
+
+ return false;
+}
+
+static int geodFromArgs(naRef* args, int offset, int argc, SGGeod& result)
+{
+ if (offset >= argc) {
+ return 0;
+ }
+
+ if (naIsGhost(args[offset])) {
+ naGhostType* gt = naGhost_type(args[offset]);
+ if (gt == &AirportGhostType) {
+ result = airportGhost(args[offset])->geod();
+ return 1;
+ }
+
+ if (gt == &NavaidGhostType) {
+ result = navaidGhost(args[offset])->geod();
+ return 1;
+ }
+
+ if (gt == &RunwayGhostType) {
+ result = runwayGhost(args[offset])->geod();
+ return 1;
+ }
+
+ if (gt == &TaxiwayGhostType) {
+ result = taxiwayGhost(args[offset])->geod();
+ return 1;
+ }
+
+ if (gt == &FixGhostType) {
+ result = fixGhost(args[offset])->geod();
+ return 1;
+ }
+
+ if (gt == &WayptGhostType) {
+ result = wayptGhost(args[offset])->position();
+ return 1;
+ }
+ }
+
+ if (geodFromHash(args[offset], result)) {
+ return 1;
+ }
+
+ if (((argc - offset) >= 2) && naIsNum(args[offset]) && naIsNum(args[offset + 1])) {
+ double lat = naNumValue(args[0]).num,
+ lon = naNumValue(args[1]).num;
+ result = SGGeod::fromDeg(lon, lat);
+ return 2;
+ }
+
+ return 0;
+}
+
+// Convert a cartesian point to a geodetic lat/lon/altitude.
+static naRef f_carttogeod(naContext c, naRef me, int argc, naRef* args)
+{
+ double lat, lon, alt, xyz[3];
+ if(argc != 3) naRuntimeError(c, "carttogeod() expects 3 arguments");
+ for(int i=0; i<3; i++)
+ xyz[i] = naNumValue(args[i]).num;
+ sgCartToGeod(xyz, &lat, &lon, &alt);
+ lat *= SG_RADIANS_TO_DEGREES;
+ lon *= SG_RADIANS_TO_DEGREES;
+ naRef vec = naNewVector(c);
+ naVec_append(vec, naNum(lat));
+ naVec_append(vec, naNum(lon));
+ naVec_append(vec, naNum(alt));
+ return vec;
+}
+
+// Convert a geodetic lat/lon/altitude to a cartesian point.
+static naRef f_geodtocart(naContext c, naRef me, int argc, naRef* args)
+{
+ if(argc != 3) naRuntimeError(c, "geodtocart() expects 3 arguments");
+ double lat = naNumValue(args[0]).num * SG_DEGREES_TO_RADIANS;
+ double lon = naNumValue(args[1]).num * SG_DEGREES_TO_RADIANS;
+ double alt = naNumValue(args[2]).num;
+ double xyz[3];
+ sgGeodToCart(lat, lon, alt, xyz);
+ naRef vec = naNewVector(c);
+ naVec_append(vec, naNum(xyz[0]));
+ naVec_append(vec, naNum(xyz[1]));
+ naVec_append(vec, naNum(xyz[2]));
+ return vec;
+}
+
+// For given geodetic point return array with elevation, and a material data
+// hash, or nil if there's no information available (tile not loaded). If
+// information about the material isn't available, then nil is returned instead
+// of the hash.
+static naRef f_geodinfo(naContext c, naRef me, int argc, naRef* args)
+{
+#define HASHSET(s,l,n) naHash_set(matdata, naStr_fromdata(naNewString(c),s,l),n)
+ if(argc < 2 || argc > 3)
+ naRuntimeError(c, "geodinfo() expects 2 or 3 arguments: lat, lon [, maxalt]");
+ double lat = naNumValue(args[0]).num;
+ double lon = naNumValue(args[1]).num;
+ double elev = argc == 3 ? naNumValue(args[2]).num : 10000;
+ const simgear::BVHMaterial *material;
+ SGGeod geod = SGGeod::fromDegM(lon, lat, elev);
+ if(!globals->get_scenery()->get_elevation_m(geod, elev, &material))
+ return naNil();
+ const SGMaterial *mat = dynamic_cast<const SGMaterial *>(material);
+ naRef vec = naNewVector(c);
+ naVec_append(vec, naNum(elev));
+ naRef matdata = naNil();
+ if(mat) {
+ matdata = naNewHash(c);
+ naRef names = naNewVector(c);
+ BOOST_FOREACH(const std::string& n, mat->get_names())
+ naVec_append(names, stringToNasal(c, n));
+
+ HASHSET("names", 5, names);
+ HASHSET("solid", 5, naNum(mat->get_solid()));
+ HASHSET("friction_factor", 15, naNum(mat->get_friction_factor()));
+ HASHSET("rolling_friction", 16, naNum(mat->get_rolling_friction()));
+ HASHSET("load_resistance", 15, naNum(mat->get_load_resistance()));
+ HASHSET("bumpiness", 9, naNum(mat->get_bumpiness()));
+ HASHSET("light_coverage", 14, naNum(mat->get_light_coverage()));
+ }
+ naVec_append(vec, matdata);
+ return vec;
+#undef HASHSET
+}
+
+
+// Returns data hash for particular or nearest airport of a <type>, or nil
+// on error.
+//
+// airportinfo(<id>); e.g. "KSFO"
+// airportinfo(<type>); type := ("airport"|"seaport"|"heliport")
+// airportinfo() same as airportinfo("airport")
+// airportinfo(<lat>, <lon> [, <type>]);
+static naRef f_airportinfo(naContext c, naRef me, int argc, naRef* args)
+{
+ SGGeod pos = globals->get_aircraft_position();
+ FGAirport* apt = NULL;
+
+ if(argc >= 2 && naIsNum(args[0]) && naIsNum(args[1])) {
+ pos = SGGeod::fromDeg(args[1].num, args[0].num);
+ args += 2;
+ argc -= 2;
+ }
+
+ double maxRange = 10000.0; // expose this? or pick a smaller value?
+
+ FGAirport::TypeRunwayFilter filter; // defaults to airports only
+
+ if(argc == 0) {
+ // fall through and use AIRPORT
+ } else if(argc == 1 && naIsString(args[0])) {
+ if (filter.fromTypeString(naStr_data(args[0]))) {
+ // done!
+ } else {
+ // user provided an <id>, hopefully
+ apt = FGAirport::findByIdent(naStr_data(args[0]));
+ if (!apt) {
+ // return nil here, but don't raise a runtime error; this is a
+ // legitamate way to validate an ICAO code, for example in a
+ // dialog box or similar.
+ return naNil();
+ }
+ }
+ } else {
+ naRuntimeError(c, "airportinfo() with invalid function arguments");
+ return naNil();
+ }
+
+ if(!apt) {
+ apt = FGAirport::findClosest(pos, maxRange, &filter);
+ if(!apt) return naNil();
+ }
+
+ return ghostForAirport(c, apt);
+}
+
+static naRef f_findAirportsWithinRange(naContext c, naRef me, int argc, naRef* args)
+{
+ int argOffset = 0;
+ SGGeod pos = globals->get_aircraft_position();
+ argOffset += geodFromArgs(args, 0, argc, pos);
+
+ if (!naIsNum(args[argOffset])) {
+ naRuntimeError(c, "findAirportsWithinRange expected range (in nm) as arg %d", argOffset);
+ }
+
+ FGAirport::TypeRunwayFilter filter; // defaults to airports only
+ double rangeNm = args[argOffset++].num;
+ if (argOffset < argc) {
+ filter.fromTypeString(naStr_data(args[argOffset++]));
+ }
+
+ naRef r = naNewVector(c);
+
+ FGPositionedList apts = FGPositioned::findWithinRange(pos, rangeNm, &filter);
+ FGPositioned::sortByRange(apts, pos);
+
+ BOOST_FOREACH(FGPositionedRef a, apts) {
+ FGAirport* apt = (FGAirport*) a.get();
+ naVec_append(r, ghostForAirport(c, apt));
+ }
+
+ return r;
+}
+
+static naRef f_findAirportsByICAO(naContext c, naRef me, int argc, naRef* args)
+{
+ if (!naIsString(args[0])) {
+ naRuntimeError(c, "findAirportsByICAO expects string as arg 0");
+ }
+
+ int argOffset = 0;
+ std::string prefix(naStr_data(args[argOffset++]));
+ FGAirport::TypeRunwayFilter filter; // defaults to airports only
+ if (argOffset < argc) {
+ filter.fromTypeString(naStr_data(args[argOffset++]));
+ }
+
+ naRef r = naNewVector(c);
+
+ FGPositionedList apts = FGPositioned::findAllWithIdent(prefix, &filter, false);
+
+ BOOST_FOREACH(FGPositionedRef a, apts) {
+ FGAirport* apt = (FGAirport*) a.get();
+ naVec_append(r, ghostForAirport(c, apt));
+ }
+
+ return r;
+}
+
+static naRef f_airport_tower(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.tower called on non-airport object");
+ }
+
+ // build a hash for the tower position
+ SGGeod towerLoc = apt->getTowerLocation();
+ naRef tower = naNewHash(c);
+ hashset(c, tower, "lat", naNum(towerLoc.getLatitudeDeg()));
+ hashset(c, tower, "lon", naNum(towerLoc.getLongitudeDeg()));
+ hashset(c, tower, "elevation", naNum(towerLoc.getElevationM()));
+ return tower;
+}
+
+static naRef f_airport_comms(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.comms called on non-airport object");
+ }
+ naRef comms = naNewVector(c);
+
+// if we have an explicit type, return a simple vector of frequencies
+ if (argc > 0 && !naIsString(args[0])) {
+ naRuntimeError(c, "airport.comms argument must be a frequency type name");
+ }
+
+ if (argc > 0) {
+ std::string commName = naStr_data(args[0]);
+ FGPositioned::Type commType = FGPositioned::typeFromName(commName);
+
+ BOOST_FOREACH(flightgear::CommStation* comm, apt->commStationsOfType(commType)) {
+ naVec_append(comms, naNum(comm->freqMHz()));
+ }
+ } else {
+// otherwise return a vector of hashes, one for each comm station.
+ BOOST_FOREACH(flightgear::CommStation* comm, apt->commStations()) {
+ naRef commHash = naNewHash(c);
+ hashset(c, commHash, "frequency", naNum(comm->freqMHz()));
+ hashset(c, commHash, "ident", stringToNasal(c, comm->ident()));
+ naVec_append(comms, commHash);
+ }
+ }
+
+ return comms;
+}
+
+static naRef f_airport_runway(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.runway called on non-airport object");
+ }
+
+ if ((argc < 1) || !naIsString(args[0])) {
+ naRuntimeError(c, "airport.runway expects a runway ident argument");
+ }
+
+ std::string ident(naStr_data(args[0]));
+ boost::to_upper(ident);
+
+ if (apt->hasRunwayWithIdent(ident)) {
+ return ghostForRunway(c, apt->getRunwayByIdent(ident));
+ } else if (apt->hasHelipadWithIdent(ident)) {
+ return ghostForHelipad(c, apt->getHelipadByIdent(ident));
+ }
+ return naNil();
+}
+
+static naRef f_airport_runwaysWithoutReciprocals(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.runwaysWithoutReciprocals called on non-airport object");
+ }
+
+ FGRunwayList rwylist(apt->getRunwaysWithoutReciprocals());
+ naRef runways = naNewVector(c);
+ for (unsigned int r=0; r<rwylist.size(); ++r) {
+ FGRunway* rwy(rwylist[r]);
+ naVec_append(runways, ghostForRunway(c, apt->getRunwayByIdent(rwy->ident())));
+ }
+ return runways;
+}
+
+static naRef f_airport_sids(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.sids called on non-airport object");
+ }
+
+ naRef sids = naNewVector(c);
+
+ FGRunway* rwy = NULL;
+ if (argc > 0 && naIsString(args[0])) {
+ if (!apt->hasRunwayWithIdent(naStr_data(args[0]))) {
+ return naNil();
+ }
+
+ rwy = apt->getRunwayByIdent(naStr_data(args[0]));
+ } else if (argc > 0) {
+ rwy = runwayGhost(args[0]);
+ }
+
+ if (rwy) {
+ BOOST_FOREACH(flightgear::SID* sid, rwy->getSIDs()) {
+ naRef procId = stringToNasal(c, sid->ident());
+ naVec_append(sids, procId);
+ }
+ } else {
+ for (unsigned int s=0; s<apt->numSIDs(); ++s) {
+ flightgear::SID* sid = apt->getSIDByIndex(s);
+ naRef procId = stringToNasal(c, sid->ident());
+ naVec_append(sids, procId);
+ }
+ }
+
+ return sids;
+}
+
+static naRef f_airport_stars(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.stars called on non-airport object");
+ }
+
+ naRef stars = naNewVector(c);
+
+ FGRunway* rwy = NULL;
+ if (argc > 0 && naIsString(args[0])) {
+ if (!apt->hasRunwayWithIdent(naStr_data(args[0]))) {
+ return naNil();
+ }
+
+ rwy = apt->getRunwayByIdent(naStr_data(args[0]));
+ } else if (argc > 0) {
+ rwy = runwayGhost(args[0]);
+ }
+
+ if (rwy) {
+ BOOST_FOREACH(flightgear::STAR* s, rwy->getSTARs()) {
+ naRef procId = stringToNasal(c, s->ident());
+ naVec_append(stars, procId);
+ }
+ } else {
+ for (unsigned int s=0; s<apt->numSTARs(); ++s) {
+ flightgear::STAR* star = apt->getSTARByIndex(s);
+ naRef procId = stringToNasal(c, star->ident());
+ naVec_append(stars, procId);
+ }
+ }
+
+ return stars;
+}
+
+static naRef f_airport_approaches(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.getApproachList called on non-airport object");
+ }
+
+ naRef approaches = naNewVector(c);
+
+ ProcedureType ty = PROCEDURE_INVALID;
+ if ((argc > 1) && naIsString(args[1])) {
+ std::string u(naStr_data(args[1]));
+ boost::to_upper(u);
+ if (u == "NDB") ty = PROCEDURE_APPROACH_NDB;
+ if (u == "VOR") ty = PROCEDURE_APPROACH_VOR;
+ if (u == "ILS") ty = PROCEDURE_APPROACH_ILS;
+ if (u == "RNAV") ty = PROCEDURE_APPROACH_RNAV;
+ }
+
+ FGRunway* rwy = NULL;
+ if (argc > 0 && (rwy = runwayGhost(args[0]))) {
+ // ok
+ } else if (argc > 0 && naIsString(args[0])) {
+ if (!apt->hasRunwayWithIdent(naStr_data(args[0]))) {
+ return naNil();
+ }
+
+ rwy = apt->getRunwayByIdent(naStr_data(args[0]));
+ }
+
+ if (rwy) {
+ BOOST_FOREACH(Approach* s, rwy->getApproaches()) {
+ if ((ty != PROCEDURE_INVALID) && (s->type() != ty)) {
+ continue;
+ }
+
+ naRef procId = stringToNasal(c, s->ident());
+ naVec_append(approaches, procId);
+ }
+ } else {
+ // no runway specified, report them all
+ for (unsigned int s=0; s<apt->numApproaches(); ++s) {
+ Approach* app = apt->getApproachByIndex(s);
+ if ((ty != PROCEDURE_INVALID) && (app->type() != ty)) {
+ continue;
+ }
+
+ naRef procId = stringToNasal(c, app->ident());
+ naVec_append(approaches, procId);
+ }
+ }
+
+ return approaches;
+}
+
+static naRef f_airport_parking(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.parking called on non-airport object");
+ }
+
+ naRef r = naNewVector(c);
+ std::string type;
+ bool onlyAvailable = false;
+
+ if (argc > 0 && naIsString(args[0])) {
+ type = naStr_data(args[0]);
+ }
+
+ if ((argc > 1) && naIsNum(args[1])) {
+ onlyAvailable = (args[1].num != 0.0);
+ }
+
+ FGAirportDynamics* dynamics = apt->getDynamics();
+ FGParkingList parkings = dynamics->getParkings(onlyAvailable, type);
+ FGParkingList::const_iterator it;
+ for (it = parkings.begin(); it != parkings.end(); ++it) {
+ FGParkingRef park = *it;
+ const SGGeod& parkLoc = park->geod();
+ naRef ph = naNewHash(c);
+ hashset(c, ph, "name", stringToNasal(c, park->getName()));
+ hashset(c, ph, "lat", naNum(parkLoc.getLatitudeDeg()));
+ hashset(c, ph, "lon", naNum(parkLoc.getLongitudeDeg()));
+ hashset(c, ph, "elevation", naNum(parkLoc.getElevationM()));
+ naVec_append(r, ph);
+ }
+
+ return r;
+}
+
+static naRef f_airport_getSid(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.getSid called on non-airport object");
+ }
+
+ if ((argc != 1) || !naIsString(args[0])) {
+ naRuntimeError(c, "airport.getSid passed invalid argument");
+ }
+
+ std::string ident = naStr_data(args[0]);
+ return ghostForProcedure(c, apt->findSIDWithIdent(ident));
+}
+
+static naRef f_airport_getStar(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.getStar called on non-airport object");
+ }
+
+ if ((argc != 1) || !naIsString(args[0])) {
+ naRuntimeError(c, "airport.getStar passed invalid argument");
+ }
+
+ std::string ident = naStr_data(args[0]);
+ return ghostForProcedure(c, apt->findSTARWithIdent(ident));
+}
+
+static naRef f_airport_getApproach(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.getIAP called on non-airport object");
+ }
+
+ if ((argc != 1) || !naIsString(args[0])) {
+ naRuntimeError(c, "airport.getIAP passed invalid argument");
+ }
+
+ std::string ident = naStr_data(args[0]);
+ return ghostForProcedure(c, apt->findApproachWithIdent(ident));
+}
+
+static naRef f_airport_findBestRunway(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "findBestRunway called on non-airport object");
+ }
+
+ SGGeod pos;
+ if (!geodFromArgs(args, 0, argc, pos)) {
+ naRuntimeError(c, "findBestRunway must be passed a position");
+ }
+
+ return ghostForRunway(c, apt->findBestRunwayForPos(pos));
+}
+
+static naRef f_airport_toString(naContext c, naRef me, int argc, naRef* args)
+{
+ FGAirport* apt = airportGhost(me);
+ if (!apt) {
+ naRuntimeError(c, "airport.tostring called on non-airport object");
+ }
+
+ return stringToNasal(c, "an airport " + apt->ident());
+}
+
+// Returns vector of data hash for navaid of a <type>, nil on error
+// navaids sorted by ascending distance
+// navinfo([<lat>,<lon>],[<type>],[<id>])
+// lat/lon (numeric): use latitude/longitude instead of ac position
+// type: ("fix"|"vor"|"ndb"|"ils"|"dme"|"tacan"|"any")
+// id: (partial) id of the fix
+// examples:
+// navinfo("vor") returns all vors
+// navinfo("HAM") return all navaids who's name start with "HAM"
+// navinfo("vor", "HAM") return all vor who's name start with "HAM"
+//navinfo(34,48,"vor","HAM") return all vor who's name start with "HAM"
+// sorted by distance relative to lat=34, lon=48
+static naRef f_navinfo(naContext c, naRef me, int argc, naRef* args)
+{
+ SGGeod pos;
+
+ if(argc >= 2 && naIsNum(args[0]) && naIsNum(args[1])) {
+ pos = SGGeod::fromDeg(args[1].num, args[0].num);
+ args += 2;
+ argc -= 2;
+ } else {
+ pos = globals->get_aircraft_position();
+ }
+
+ FGPositioned::Type type = FGPositioned::INVALID;
+ nav_list_type navlist;
+ const char * id = "";
+
+ if(argc > 0 && naIsString(args[0])) {
+ const char *s = naStr_data(args[0]);
+ if(!strcmp(s, "any")) type = FGPositioned::INVALID;
+ else if(!strcmp(s, "fix")) type = FGPositioned::FIX;
+ else if(!strcmp(s, "vor")) type = FGPositioned::VOR;
+ else if(!strcmp(s, "ndb")) type = FGPositioned::NDB;
+ else if(!strcmp(s, "ils")) type = FGPositioned::ILS;
+ else if(!strcmp(s, "dme")) type = FGPositioned::DME;
+ else if(!strcmp(s, "tacan")) type = FGPositioned::TACAN;
+ else id = s; // this is an id
+ ++args;
+ --argc;
+ }
+
+ if(argc > 0 && naIsString(args[0])) {
+ if( *id != 0 ) {
+ naRuntimeError(c, "navinfo() called with navaid id");
+ return naNil();
+ }
+ id = naStr_data(args[0]);
+ ++args;
+ --argc;
+ }
+
+ if( argc > 0 ) {
+ naRuntimeError(c, "navinfo() called with too many arguments");
+ return naNil();
+ }
+
+ FGNavList::TypeFilter filter(type);
+ navlist = FGNavList::findByIdentAndFreq( pos, id, 0.0, &filter );
+
+ naRef reply = naNewVector(c);
+ for( nav_list_type::const_iterator it = navlist.begin(); it != navlist.end(); ++it ) {
+ naVec_append( reply, ghostForNavaid(c, *it) );
+ }
+ return reply;
+}
+
+static naRef f_findNavaidsWithinRange(naContext c, naRef me, int argc, naRef* args)
+{
+ int argOffset = 0;
+ SGGeod pos = globals->get_aircraft_position();
+ argOffset += geodFromArgs(args, 0, argc, pos);
+
+ if (!naIsNum(args[argOffset])) {
+ naRuntimeError(c, "findNavaidsWithinRange expected range (in nm) as arg %d", argOffset);
+ }
+
+ FGPositioned::Type type = FGPositioned::INVALID;
+ double rangeNm = args[argOffset++].num;
+ if (argOffset < argc) {
+ type = FGPositioned::typeFromName(naStr_data(args[argOffset]));
+ }
+
+ naRef r = naNewVector(c);
+ FGNavList::TypeFilter filter(type);
+ FGPositionedList navs = FGPositioned::findWithinRange(pos, rangeNm, &filter);
+ FGPositioned::sortByRange(navs, pos);
+
+ BOOST_FOREACH(FGPositionedRef a, navs) {
+ FGNavRecord* nav = (FGNavRecord*) a.get();
+ naVec_append(r, ghostForNavaid(c, nav));
+ }
+
+ return r;
+}
+
+static naRef f_findNavaidByFrequency(naContext c, naRef me, int argc, naRef* args)
+{
+ int argOffset = 0;
+ SGGeod pos = globals->get_aircraft_position();
+ argOffset += geodFromArgs(args, 0, argc, pos);
+
+ if (!naIsNum(args[argOffset])) {
+ naRuntimeError(c, "findNavaidByFrequency expectes frequency (in Mhz) as arg %d", argOffset);
+ }
+
+ FGPositioned::Type type = FGPositioned::INVALID;
+ double freqMhz = args[argOffset++].num;
+ if (argOffset < argc) {
+ type = FGPositioned::typeFromName(naStr_data(args[argOffset]));
+ }
+
+ FGNavList::TypeFilter filter(type);
+ nav_list_type navs = FGNavList::findAllByFreq(freqMhz, pos, &filter);
+ if (navs.empty()) {
+ return naNil();
+ }
+
+ return ghostForNavaid(c, navs.front().ptr());
+}
+
+static naRef f_findNavaidsByFrequency(naContext c, naRef me, int argc, naRef* args)
+{
+ int argOffset = 0;
+ SGGeod pos = globals->get_aircraft_position();
+ argOffset += geodFromArgs(args, 0, argc, pos);
+
+ if (!naIsNum(args[argOffset])) {
+ naRuntimeError(c, "findNavaidsByFrequency expectes frequency (in Mhz) as arg %d", argOffset);
+ }
+
+ FGPositioned::Type type = FGPositioned::INVALID;
+ double freqMhz = args[argOffset++].num;
+ if (argOffset < argc) {
+ type = FGPositioned::typeFromName(naStr_data(args[argOffset]));
+ }
+
+ naRef r = naNewVector(c);
+
+ FGNavList::TypeFilter filter(type);
+ nav_list_type navs = FGNavList::findAllByFreq(freqMhz, pos, &filter);
+
+ BOOST_FOREACH(nav_rec_ptr a, navs) {
+ naVec_append(r, ghostForNavaid(c, a.ptr()));
+ }
+
+ return r;
+}
+
+static naRef f_findNavaidsByIdent(naContext c, naRef me, int argc, naRef* args)
+{
+ int argOffset = 0;
+ SGGeod pos = globals->get_aircraft_position();
+ argOffset += geodFromArgs(args, 0, argc, pos);
+
+ if (!naIsString(args[argOffset])) {
+ naRuntimeError(c, "findNavaidsByIdent expectes ident string as arg %d", argOffset);
+ }
+
+ FGPositioned::Type type = FGPositioned::INVALID;
+ std::string ident = naStr_data(args[argOffset++]);
+ if (argOffset < argc) {
+ type = FGPositioned::typeFromName(naStr_data(args[argOffset]));
+ }
+
+ FGNavList::TypeFilter filter(type);
+ naRef r = naNewVector(c);
+ nav_list_type navs = FGNavList::findByIdentAndFreq(pos, ident, 0.0, &filter);
+
+ BOOST_FOREACH(nav_rec_ptr a, navs) {
+ naVec_append(r, ghostForNavaid(c, a.ptr()));
+ }
+
+ return r;
+}
+
+static naRef f_findFixesByIdent(naContext c, naRef me, int argc, naRef* args)
+{
+ int argOffset = 0;
+ SGGeod pos = globals->get_aircraft_position();
+ argOffset += geodFromArgs(args, 0, argc, pos);
+
+ if (!naIsString(args[argOffset])) {
+ naRuntimeError(c, "findFixesByIdent expectes ident string as arg %d", argOffset);
+ }
+
+ std::string ident(naStr_data(args[argOffset]));
+ naRef r = naNewVector(c);
+
+ FGPositioned::TypeFilter filter(FGPositioned::FIX);
+ FGPositionedList fixes = FGPositioned::findAllWithIdent(ident, &filter);
+ FGPositioned::sortByRange(fixes, pos);
+
+ BOOST_FOREACH(FGPositionedRef f, fixes) {
+ naVec_append(r, ghostForFix(c, (FGFix*) f.ptr()));
+ }
+
+ return r;
+}
+
+// Convert a cartesian point to a geodetic lat/lon/altitude.
+static naRef f_magvar(naContext c, naRef me, int argc, naRef* args)
+{
+ SGGeod pos = globals->get_aircraft_position();
+ if (argc == 0) {
+ // fine, use aircraft position
+ } else if (geodFromArgs(args, 0, argc, pos)) {
+ // okay
+ } else {
+ naRuntimeError(c, "magvar() expects no arguments, a positioned hash or lat,lon pair");
+ }
+
+ double jd = globals->get_time_params()->getJD();
+ double magvarDeg = sgGetMagVar(pos, jd) * SG_RADIANS_TO_DEGREES;
+ return naNum(magvarDeg);
+}
+
+static naRef f_courseAndDistance(naContext c, naRef me, int argc, naRef* args)
+{
+ SGGeod from = globals->get_aircraft_position(), to, p;
+ int argOffset = geodFromArgs(args, 0, argc, p);
+ if (geodFromArgs(args, argOffset, argc, to)) {
+ from = p; // we parsed both FROM and TO args, so first was from
+ } else {
+ to = p; // only parsed one arg, so FROM is current
+ }
+
+ if (argOffset == 0) {
+ naRuntimeError(c, "invalid arguments to courseAndDistance");
+ }
+
+ double course, course2, d;
+ SGGeodesy::inverse(from, to, course, course2, d);
+
+ naRef result = naNewVector(c);
+ naVec_append(result, naNum(course));
+ naVec_append(result, naNum(d * SG_METER_TO_NM));
+ return result;
+}
+
+static naRef f_greatCircleMove(naContext c, naRef me, int argc, naRef* args)
+{
+ SGGeod from = globals->get_aircraft_position(), to;
+ int argOffset = 0;
+
+ // complication - don't inerpret two doubles (as the only args)
+ // as a lat,lon pair - only do so if we have at least three args.
+ if (argc > 2) {
+ argOffset = geodFromArgs(args, 0, argc, from);
+ }
+
+ if ((argOffset + 1) >= argc) {
+ naRuntimeError(c, "isufficent arguments to greatCircleMove");
+ }
+
+ if (!naIsNum(args[argOffset]) || !naIsNum(args[argOffset+1])) {
+ naRuntimeError(c, "invalid arguments %d and %d to greatCircleMove",
+ argOffset, argOffset + 1);
+ }
+
+ double course = args[argOffset].num, course2;
+ double distanceNm = args[argOffset + 1].num;
+ SGGeodesy::direct(from, course, distanceNm * SG_NM_TO_METER, to, course2);
+
+ // return geo.Coord
+ naRef coord = naNewHash(c);
+ hashset(c, coord, "lat", naNum(to.getLatitudeDeg()));
+ hashset(c, coord, "lon", naNum(to.getLongitudeDeg()));
+ return coord;
+}
+
+static naRef f_tilePath(naContext c, naRef me, int argc, naRef* args)
+{
+ SGGeod pos = globals->get_aircraft_position();
+ geodFromArgs(args, 0, argc, pos);
+ SGBucket b(pos);
+ return stringToNasal(c, b.gen_base_path());
+}
+
+static naRef f_tileIndex(naContext c, naRef me, int argc, naRef* args)
+{
+ SGGeod pos = globals->get_aircraft_position();
+ geodFromArgs(args, 0, argc, pos);
+ SGBucket b(pos);
+ return naNum(b.gen_index());
+}
+
+static naRef f_route(naContext c, naRef me, int argc, naRef* args)
+{
+ if (argc == 0) {
+ FGRouteMgr* rm = static_cast<FGRouteMgr*>(globals->get_subsystem("route-manager"));
+ return ghostForFlightPlan(c, rm->flightPlan());
+ }
+
+ if ((argc > 0) && naIsString(args[0])) {
+ flightgear::FlightPlan* fp = new flightgear::FlightPlan;
+ SGPath path(naStr_data(args[0]));
+ if (!path.exists()) {
+ naRuntimeError(c, "flightplan, no file at path %s", path.c_str());
+ }
+
+ if (!fp->load(path)) {
+ SG_LOG(SG_NASAL, SG_WARN, "failed to load flight-plan from " << path);
+ delete fp;
+ return naNil();
+ }
+
+ return ghostForFlightPlan(c, fp);
+ }
+
+ naRuntimeError(c, "bad arguments to flightplan()");
+ return naNil();
+}
+
+class NasalFPDelegate : public FlightPlan::Delegate
+{
+public:
+ NasalFPDelegate(FlightPlan* fp, FGNasalSys* sys, naRef ins) :
+ _nasal(sys),
+ _plan(fp),
+ _instance(ins)
+ {
+ _gcSaveKey = _nasal->gcSave(ins);
+ }
+
+ virtual ~NasalFPDelegate()
+ {
+ _nasal->gcRelease(_gcSaveKey);
+ }
+
+ virtual void departureChanged()
+ {
+ callDelegateMethod("departureChanged");
+ }
+
+ virtual void arrivalChanged()
+ {
+ callDelegateMethod("arrivalChanged");
+ }
+
+ virtual void waypointsChanged()
+ {
+ callDelegateMethod("waypointsChanged");
+ }
+
+ virtual void currentWaypointChanged()
+ {
+ callDelegateMethod("currentWaypointChanged");
+ }
+
+ virtual void cleared()
+ {
+ callDelegateMethod("cleared");
+ }
+
+ virtual void endOfFlightPlan()
+ {
+ callDelegateMethod("endOfFlightPlan");
+ }
+
+ virtual void activated()
+ {
+ callDelegateMethod("activated");
+ }
+private:
+
+ void callDelegateMethod(const char* method)
+ {
+ naRef f;
+ naContext ctx = naNewContext();
+
+ if (naMember_cget(ctx, _instance, method, &f) != 0) {
+ naRef arg[1];
+ arg[0] = ghostForFlightPlan(ctx, _plan);
+ _nasal->callMethod(f, _instance, 1, arg, naNil());
+ }
+
+ naFreeContext(ctx);
+ }
+
+ FGNasalSys* _nasal;
+ FlightPlan* _plan;
+ naRef _instance;
+ int _gcSaveKey;
+};
+
+
+class NasalFPDelegateFactory : public FlightPlan::DelegateFactory
+{
+public:
+ NasalFPDelegateFactory(naRef code)
+ {
+ _nasal = (FGNasalSys*) globals->get_subsystem("nasal");
+ _func = code;
+ _gcSaveKey = _nasal->gcSave(_func);
+ }
+
+ virtual ~NasalFPDelegateFactory()
+ {
+ _nasal->gcRelease(_gcSaveKey);
+ }
+
+ virtual FlightPlan::Delegate* createFlightPlanDelegate(FlightPlan* fp)
+ {
+ naRef args[1];
+ naContext ctx = naNewContext();
+ args[0] = ghostForFlightPlan(ctx, fp);
+ naRef instance = _nasal->call(_func, 1, args, naNil());
+
+ FlightPlan::Delegate* result = NULL;
+ if (!naIsNil(instance)) {
+ // will GC-save instance
+ result = new NasalFPDelegate(fp, _nasal, instance);
+ }
+
+ naFreeContext(ctx);
+ return result;
+ }
+private:
+ FGNasalSys* _nasal;
+ naRef _func;
+ int _gcSaveKey;
+};
+
+static std::vector<NasalFPDelegateFactory*> static_nasalDelegateFactories;
+
+void shutdownNasalPositioned()
+{
+ std::vector<NasalFPDelegateFactory*>::iterator it;
+ for (it = static_nasalDelegateFactories.begin();
+ it != static_nasalDelegateFactories.end(); ++it)
+ {
+ FlightPlan::unregisterDelegateFactory(*it);
+ delete (*it);
+ }
+ static_nasalDelegateFactories.clear();
+}
+
+static naRef f_registerFPDelegate(naContext c, naRef me, int argc, naRef* args)
+{
+ if ((argc < 1) || !naIsFunc(args[0])) {
+ naRuntimeError(c, "non-function argument to registerFlightPlanDelegate");
+ }
+
+ NasalFPDelegateFactory* factory = new NasalFPDelegateFactory(args[0]);
+ FlightPlan::registerDelegateFactory(factory);
+ static_nasalDelegateFactories.push_back(factory);
+ return naNil();
+}
+
+static WayptRef wayptFromArg(naRef arg)
+{
+ WayptRef r = wayptGhost(arg);
+ if (r.valid()) {
+ return r;
+ }
+
+ FGPositioned* pos = positionedGhost(arg);
+ if (!pos) {
+ // let's check if the arg is hash, coudl extra a geod and hence build
+ // a simple waypoint
+
+ return WayptRef();
+ }
+
+// special-case for runways
+ if (pos->type() == FGPositioned::RUNWAY) {
+ return new RunwayWaypt((FGRunway*) pos, NULL);
+ }
+
+ return new NavaidWaypoint(pos, NULL);
+}
+
+static naRef convertWayptVecToNasal(naContext c, const WayptVec& wps)
+{
+ naRef result = naNewVector(c);
+ BOOST_FOREACH(WayptRef wpt, wps) {
+ naVec_append(result, ghostForWaypt(c, wpt.get()));
+ }
+ return result;
+}
+
+static naRef f_airwaySearch(naContext c, naRef me, int argc, naRef* args)
+{
+ if (argc < 2) {
+ naRuntimeError(c, "airwaysSearch needs at least two arguments");
+ }
+
+ WayptRef start = wayptFromArg(args[0]),
+ end = wayptFromArg(args[1]);
+
+ if (!start || !end) {
+ SG_LOG(SG_NASAL, SG_WARN, "airwaysSearch: start or end points are invalid");
+ return naNil();
+ }
+
+ bool highLevel = true;
+ if ((argc > 2) && naIsString(args[2])) {
+ if (!strcmp(naStr_data(args[2]), "lowlevel")) {
+ highLevel = false;
+ }
+ }
+
+ WayptVec route;
+ if (highLevel) {
+ Airway::highLevel()->route(start, end, route);
+ } else {
+ Airway::lowLevel()->route(start, end, route);
+ }
+
+ return convertWayptVecToNasal(c, route);
+}
+
+static naRef f_createWP(naContext c, naRef me, int argc, naRef* args)
+{
+ SGGeod pos;
+ int argOffset = geodFromArgs(args, 0, argc, pos);
+
+ if (((argc - argOffset) < 1) || !naIsString(args[argOffset])) {
+ naRuntimeError(c, "createWP: no identifier supplied");
+ }
+
+ std::string ident = naStr_data(args[argOffset++]);
+ WayptRef wpt = new BasicWaypt(pos, ident, NULL);
+
+// set waypt flags - approach, departure, pseudo, etc
+ if (argc > argOffset) {
+ WayptFlag f = wayptFlagFromString(naStr_data(args[argOffset++]));
+ if (f == 0) {
+ naRuntimeError(c, "createWP: bad waypoint role");
+ }
+
+ wpt->setFlag(f);
+ }
+
+ return ghostForWaypt(c, wpt);
+}
+
+static naRef f_createWPFrom(naContext c, naRef me, int argc, naRef* args)
+{
+ if (argc < 1) {
+ naRuntimeError(c, "createWPFrom: need at least one argument");
+ }
+
+ FGPositioned* positioned = positionedGhost(args[0]);
+ if (!positioned) {
+ naRuntimeError(c, "createWPFrom: couldn;t convert arg[0] to FGPositioned");
+ }
+
+ WayptRef wpt;
+ if (positioned->type() == FGPositioned::RUNWAY) {
+ wpt = new RunwayWaypt((FGRunway*) positioned, NULL);
+ } else {
+ wpt = new NavaidWaypoint(positioned, NULL);
+ }
+
+ // set waypt flags - approach, departure, pseudo, etc
+ if (argc > 1) {
+ WayptFlag f = wayptFlagFromString(naStr_data(args[1]));
+ if (f == 0) {
+ naRuntimeError(c, "createWPFrom: bad waypoint role");