X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FScripting%2FNasalPositioned.cxx;h=1d2b41402a28a71b02f12e0266a2f66463f20af4;hb=accdf97785593046744cebbcdc467b4e52a86ebd;hp=d7be25322e7bd1cb46e9396b31629b27622c2d68;hpb=71622dc3ca72b45e5d2116cbdda43e90b6565ccb;p=flightgear.git

diff --git a/src/Scripting/NasalPositioned.cxx b/src/Scripting/NasalPositioned.cxx
index d7be25322..1d2b41402 100644
--- a/src/Scripting/NasalPositioned.cxx
+++ b/src/Scripting/NasalPositioned.cxx
@@ -28,6 +28,7 @@
 
 #include <boost/foreach.hpp>
 #include <boost/algorithm/string/case_conv.hpp>
+#include <boost/tuple/tuple.hpp> // for boost::tie
 
 #include <simgear/sg_inlines.h>
 #include <simgear/scene/material/mat.hxx>
@@ -36,18 +37,24 @@
 #include <simgear/bucket/newbucket.hxx>
 
 #include <Airports/runways.hxx>
-#include <Airports/simple.hxx>
+#include <Airports/airport.hxx>
 #include <Airports/dynamics.hxx>
 #include <Airports/parking.hxx>
+#include <Scripting/NasalSys.hxx>
 #include <Navaids/navlist.hxx>
 #include <Navaids/procedure.hxx>
 #include <Main/globals.hxx>
 #include <Main/fg_props.hxx>
 #include <Scenery/scenery.hxx>
 #include <ATC/CommStation.hxx>
-#include <Navaids/route.hxx>
+#include <Navaids/FlightPlan.hxx>
+#include <Navaids/waypoint.hxx>
+#include <Navaids/fix.hxx>
 #include <Autopilot/route_mgr.hxx>
+#include <Navaids/routePath.hxx>
 #include <Navaids/procedure.hxx>
+#include <Navaids/airways.hxx>
+#include <Navaids/NavDataCache.hxx>
 
 using namespace flightgear;
 
@@ -66,18 +73,27 @@ naGhostType NavaidGhostType = { positionedGhostDestroy, "navaid", navaidGhostGet
 
 static const char* runwayGhostGetMember(naContext c, void* g, naRef field, naRef* out);
 naGhostType RunwayGhostType = { positionedGhostDestroy, "runway", runwayGhostGetMember, 0 };
+naGhostType HelipadGhostType = { positionedGhostDestroy, "helipad", runwayGhostGetMember, 0 };
+naGhostType TaxiwayGhostType = { positionedGhostDestroy, "taxiway", runwayGhostGetMember, 0 };
+
+static const char* fixGhostGetMember(naContext c, void* g, naRef field, naRef* out);
+naGhostType FixGhostType = { positionedGhostDestroy, "fix", fixGhostGetMember, 0 };
 
 static const char* wayptGhostGetMember(naContext c, void* g, naRef field, naRef* out);
+static void waypointGhostSetMember(naContext c, void* g, naRef field, naRef value);
+
 naGhostType WayptGhostType = { wayptGhostDestroy, 
   "waypoint",
   wayptGhostGetMember,
-  0};
+  waypointGhostSetMember};
 
 static const char* legGhostGetMember(naContext c, void* g, naRef field, naRef* out);
+static void legGhostSetMember(naContext c, void* g, naRef field, naRef value);
+
 naGhostType FPLegGhostType = { legGhostDestroy, 
   "flightplan-leg",
   legGhostGetMember,
-  0};
+  legGhostSetMember};
 
 static const char* flightplanGhostGetMember(naContext c, void* g, naRef field, naRef* out);
 static void flightplanGhostSetMember(naContext c, void* g, naRef field, naRef value);
@@ -108,10 +124,48 @@ static naRef stringToNasal(naContext c, const std::string& s)
                    s.length());
 }
 
+static bool convertToNum(naRef v, double& result)
+{
+    naRef n = naNumValue(v);
+    if (naIsNil(n)) {
+        return false; // couldn't convert
+    }
+    
+    result = n.num;
+    return true;
+}
+
+static WayptFlag wayptFlagFromString(const char* s)
+{
+  if (!strcmp(s, "sid")) return WPT_DEPARTURE;
+  if (!strcmp(s, "star")) return WPT_ARRIVAL;
+  if (!strcmp(s, "approach")) return WPT_APPROACH;
+  if (!strcmp(s, "missed")) return WPT_MISS;
+  if (!strcmp(s, "pseudo")) return WPT_PSEUDO;
+  
+  return (WayptFlag) 0;
+}
+
+static naRef wayptFlagToNasal(naContext c, unsigned int flags)
+{
+  if (flags & WPT_PSEUDO) return stringToNasal(c, "pseudo");
+  if (flags & WPT_DEPARTURE) return stringToNasal(c, "sid");
+  if (flags & WPT_ARRIVAL) return stringToNasal(c, "star");
+  if (flags & WPT_MISS) return stringToNasal(c, "missed");
+  if (flags & WPT_APPROACH) return stringToNasal(c, "approach");
+  return naNil();
+}
+
 static FGPositioned* positionedGhost(naRef r)
 {
-    if (naGhost_type(r) == &PositionedGhostType)
+    if ((naGhost_type(r) == &AirportGhostType) ||
+        (naGhost_type(r) == &NavaidGhostType) ||
+        (naGhost_type(r) == &RunwayGhostType) ||
+        (naGhost_type(r) == &FixGhostType))
+    {
         return (FGPositioned*) naGhost_ptr(r);
+    }
+  
     return 0;
 }
 
@@ -136,6 +190,21 @@ static FGRunway* runwayGhost(naRef r)
   return 0;
 }
 
+static FGTaxiway* taxiwayGhost(naRef r)
+{
+  if (naGhost_type(r) == &TaxiwayGhostType)
+    return (FGTaxiway*) naGhost_ptr(r);
+  return 0;
+}
+
+static FGFix* fixGhost(naRef r)
+{
+  if (naGhost_type(r) == &FixGhostType)
+    return (FGFix*) naGhost_ptr(r);
+  return 0;
+}
+
+
 static void positionedGhostDestroy(void* g)
 {
     FGPositioned* pos = (FGPositioned*)g;
@@ -147,6 +216,12 @@ static Waypt* wayptGhost(naRef r)
 {
   if (naGhost_type(r) == &WayptGhostType)
     return (Waypt*) naGhost_ptr(r);
+  
+  if (naGhost_type(r) == &FPLegGhostType) {
+    FlightPlan::Leg* leg = (FlightPlan::Leg*) naGhost_ptr(r);
+    return leg->waypoint();
+  }
+  
   return 0;
 }
 
@@ -196,16 +271,6 @@ static naRef geoCoordClass;
 static naRef fpLegPrototype;
 static naRef procedurePrototype;
 
-naRef ghostForPositioned(naContext c, const FGPositioned* pos)
-{
-    if (!pos) {
-        return naNil();
-    }
-    
-    FGPositioned::get(pos); // take a ref
-    return naNewGhost(c, &PositionedGhostType, (void*) pos);
-}
-
 naRef ghostForAirport(naContext c, const FGAirport* apt)
 {
   if (!apt) {
@@ -236,12 +301,43 @@ naRef ghostForRunway(naContext c, const FGRunway* r)
   return naNewGhost2(c, &RunwayGhostType, (void*) r);
 }
 
+naRef ghostForHelipad(naContext c, const FGHelipad* r)
+{
+  if (!r) {
+    return naNil();
+  }
+
+  FGPositioned::get(r); // take a ref
+  return naNewGhost2(c, &HelipadGhostType, (void*) r);
+}
+
+naRef ghostForTaxiway(naContext c, const FGTaxiway* r)
+{
+  if (!r) {
+    return naNil();
+  }
+  
+  FGPositioned::get(r); // take a ref
+  return naNewGhost2(c, &TaxiwayGhostType, (void*) r);
+}
+
+naRef ghostForFix(naContext c, const FGFix* r)
+{
+  if (!r) {
+    return naNil();
+  }
+  
+  FGPositioned::get(r); // take a ref
+  return naNewGhost2(c, &FixGhostType, (void*) r);
+}
+
+
 naRef ghostForWaypt(naContext c, const Waypt* wpt)
 {
   if (!wpt) {
     return naNil();
   }
-  
+
   Waypt::get(wpt); // take a ref
   return naNewGhost2(c, &WayptGhostType, (void*) wpt);
 }
@@ -291,12 +387,35 @@ static const char* airportGhostGetMember(naContext c, void* g, naRef field, naRe
     *out = naNum(apt->getMetar());
   } else if (!strcmp(fieldName, "runways")) {
     *out = naNewHash(c);
+    double minLengthFt = fgGetDouble("/sim/navdb/min-runway-length-ft");
     for(unsigned int r=0; r<apt->numRunways(); ++r) {
       FGRunway* rwy(apt->getRunwayByIndex(r));
+      // ignore unusably short runways
+      if (rwy->lengthFt() < minLengthFt) {
+        continue;
+      }
       naRef rwyid = stringToNasal(c, rwy->ident());
       naRef rwydata = ghostForRunway(c, rwy);
       naHash_set(*out, rwyid, rwydata);
     }
+  } else if (!strcmp(fieldName, "helipads")) {
+    *out = naNewHash(c);
+
+    for(unsigned int r=0; r<apt->numHelipads(); ++r) {
+      FGHelipad* hp(apt->getHelipadByIndex(r));
+
+      naRef rwyid = stringToNasal(c, hp->ident());
+      naRef rwydata = ghostForHelipad(c, hp);
+      naHash_set(*out, rwyid, rwydata);
+    }
+
+  } else if (!strcmp(fieldName, "taxiways")) {
+    *out = naNewVector(c);
+    for(unsigned int r=0; r<apt->numTaxiways(); ++r) {
+      FGTaxiway* taxi(apt->getTaxiwayByIndex(r));
+      naRef taxidata = ghostForTaxiway(c, taxi);
+      naVec_append(*out, taxidata);
+    }
 
   } else {
     return 0;
@@ -307,10 +426,11 @@ static const char* airportGhostGetMember(naContext c, void* g, naRef field, naRe
 
 static const char* waypointCommonGetMember(naContext c, Waypt* wpt, const char* fieldName, naRef* out)
 {
-  if (!strcmp(fieldName, "wp_name")) *out = stringToNasal(c, wpt->ident());
+  if (!strcmp(fieldName, "wp_name") || !strcmp(fieldName, "id")) *out = stringToNasal(c, wpt->ident());
   else if (!strcmp(fieldName, "wp_type")) *out = stringToNasal(c, wpt->type());
-  else if (!strcmp(fieldName, "wp_lat")) *out = naNum(wpt->position().getLatitudeDeg());
-  else if (!strcmp(fieldName, "wp_lon")) *out = naNum(wpt->position().getLongitudeDeg());
+  else if (!strcmp(fieldName, "wp_role")) *out = wayptFlagToNasal(c, wpt->flags());
+  else if (!strcmp(fieldName, "wp_lat") || !strcmp(fieldName, "lat")) *out = naNum(wpt->position().getLatitudeDeg());
+  else if (!strcmp(fieldName, "wp_lon") || !strcmp(fieldName, "lon")) *out = naNum(wpt->position().getLongitudeDeg());
   else if (!strcmp(fieldName, "wp_parent_name")) {
     Procedure* proc = dynamic_cast<Procedure*>(wpt->owner());
     *out = proc ? stringToNasal(c, proc->ident()) : naNil();
@@ -330,6 +450,20 @@ static const char* waypointCommonGetMember(naContext c, Waypt* wpt, const char*
   return "";
 }
 
+static void waypointCommonSetMember(naContext c, Waypt* wpt, const char* fieldName, naRef value)
+{
+  if (!strcmp(fieldName, "wp_role")) {
+    if (!naIsString(value)) naRuntimeError(c, "wp_role must be a string");
+    if (wpt->owner() != NULL) naRuntimeError(c, "cannot override wp_role on waypoint with parent");
+    WayptFlag f = wayptFlagFromString(naStr_data(value));
+    if (f == 0) {
+      naRuntimeError(c, "unrecognized wp_role value %s", naStr_data(value));
+    }
+    
+    wpt->setFlag(f, true);
+  }
+}
+
 static const char* wayptGhostGetMember(naContext c, void* g, naRef field, naRef* out)
 {
   const char* fieldName = naStr_data(field);
@@ -339,7 +473,7 @@ static const char* wayptGhostGetMember(naContext c, void* g, naRef field, naRef*
 
 static RouteRestriction routeRestrictionFromString(const char* s)
 {
-  string u(s);
+  std::string u(s);
   boost::to_lower(u);
   if (u == "computed") return RESTRICT_COMPUTED;
   if (u == "at") return RESTRICT_AT;
@@ -374,6 +508,9 @@ static const char* legGhostGetMember(naContext c, void* g, naRef field, naRef* o
   if (!strcmp(fieldName, "parents")) {
     *out = naNewVector(c);
     naVec_append(*out, fpLegPrototype);
+    naVec_append(*out, waypointPrototype);
+  } else if (!strcmp(fieldName, "index")) {
+    *out = naNum(leg->index());
   } else if (!strcmp(fieldName, "alt_cstr")) {
     *out = naNum(leg->altitudeFt());
   } else if (!strcmp(fieldName, "alt_cstr_type")) {
@@ -396,6 +533,21 @@ static const char* legGhostGetMember(naContext c, void* g, naRef field, naRef* o
   return ""; // success
 }
 
+static void waypointGhostSetMember(naContext c, void* g, naRef field, naRef value)
+{
+  const char* fieldName = naStr_data(field);
+  Waypt* wpt = (Waypt*) g;
+  waypointCommonSetMember(c, wpt, fieldName, value);
+}
+
+static void legGhostSetMember(naContext c, void* g, naRef field, naRef value)
+{
+  const char* fieldName = naStr_data(field);
+  FlightPlan::Leg* leg = (FlightPlan::Leg*) g;
+    
+  waypointCommonSetMember(c, leg->waypoint(), fieldName, value);
+}
+
 static const char* flightplanGhostGetMember(naContext c, void* g, naRef field, naRef* out)
 {
   const char* fieldName = naStr_data(field);
@@ -449,6 +601,11 @@ static void flightplanGhostSetMember(naContext c, void* g, naRef field, naRef va
       return;
     }
     
+    if (naIsNil(value)) {
+      fp->setDeparture(static_cast<FGAirport*>(NULL));
+      return;
+    }
+      
     naRuntimeError(c, "bad argument type setting departure");
   } else if (!strcmp(fieldName, "destination")) {
     FGAirport* apt = airportGhost(value);
@@ -471,7 +628,7 @@ static void flightplanGhostSetMember(naContext c, void* g, naRef field, naRef va
       return;
     }
     
-    naRuntimeError(c, "bad argument type setting departure");
+    naRuntimeError(c, "bad argument type setting departure runway");
   } else if (!strcmp(fieldName, "destination_runway")) {
     FGRunway* rwy = runwayGhost(value);
     if (rwy){
@@ -479,7 +636,7 @@ static void flightplanGhostSetMember(naContext c, void* g, naRef field, naRef va
       return;
     }
     
-    naRuntimeError(c, "bad argument type setting departure");
+    naRuntimeError(c, "bad argument type setting destination runway");
   } else if (!strcmp(fieldName, "sid")) {
     Procedure* proc = procedureGhost(value);
     if (proc && (proc->type() == PROCEDURE_SID)) {
@@ -577,7 +734,7 @@ static const char* procedureGhostGetMember(naContext c, void* g, naRef field, na
   else if (!strcmp(fieldName, "radio")) *out = procedureRadioType(c, proc->type());
   else if (!strcmp(fieldName, "runways")) {
     *out = naNewVector(c);
-    BOOST_FOREACH(FGRunwayPtr rwy, proc->runways()) {
+    BOOST_FOREACH(FGRunwayRef rwy, proc->runways()) {
       naVec_append(*out, stringToNasal(c, rwy->ident()));
     }
   } else if (!strcmp(fieldName, "transitions")) {
@@ -588,7 +745,7 @@ static const char* procedureGhostGetMember(naContext c, void* g, naRef field, na
         
     ArrivalDeparture* ad = static_cast<ArrivalDeparture*>(proc);
     *out = naNewVector(c);
-    BOOST_FOREACH(string id, ad->transitionIdents()) {
+    BOOST_FOREACH(std::string id, ad->transitionIdents()) {
       naVec_append(*out, stringToNasal(c, id));
     }
   } else {
@@ -601,22 +758,30 @@ static const char* procedureGhostGetMember(naContext c, void* g, naRef field, na
 static const char* runwayGhostGetMember(naContext c, void* g, naRef field, naRef* out)
 {
   const char* fieldName = naStr_data(field);
-  FGRunway* rwy = (FGRunway*) g;
-  
-  if (!strcmp(fieldName, "id")) *out = stringToNasal(c, rwy->ident());
-  else if (!strcmp(fieldName, "lat")) *out = naNum(rwy->latitude());
-  else if (!strcmp(fieldName, "lon")) *out = naNum(rwy->longitude());
-  else if (!strcmp(fieldName, "heading")) *out = naNum(rwy->headingDeg());
-  else if (!strcmp(fieldName, "length")) *out = naNum(rwy->lengthM());
-  else if (!strcmp(fieldName, "width")) *out = naNum(rwy->widthM());
-  else if (!strcmp(fieldName, "threshold")) *out = naNum(rwy->displacedThresholdM());
-  else if (!strcmp(fieldName, "stopway")) *out = naNum(rwy->stopwayM());
-  else if (!strcmp(fieldName, "ils_frequency_mhz")) {
-    *out = rwy->ILS() ? naNum(rwy->ILS()->get_freq() / 100.0) : naNil();
-  } else if (!strcmp(fieldName, "ils")) {
-    *out = ghostForNavaid(c, rwy->ILS());
+  FGRunwayBase* base = (FGRunwayBase*) g;
+  
+  if (!strcmp(fieldName, "id")) *out = stringToNasal(c, base->ident());
+  else if (!strcmp(fieldName, "lat")) *out = naNum(base->latitude());
+  else if (!strcmp(fieldName, "lon")) *out = naNum(base->longitude());
+  else if (!strcmp(fieldName, "heading")) *out = naNum(base->headingDeg());
+  else if (!strcmp(fieldName, "length")) *out = naNum(base->lengthM());
+  else if (!strcmp(fieldName, "width")) *out = naNum(base->widthM());
+  else if (!strcmp(fieldName, "surface")) *out = naNum(base->surface());
+  else if (base->type() == FGRunwayBase::RUNWAY) {  
+    FGRunway* rwy = (FGRunway*) g;
+    if (!strcmp(fieldName, "threshold")) *out = naNum(rwy->displacedThresholdM());
+    else if (!strcmp(fieldName, "stopway")) *out = naNum(rwy->stopwayM());
+    else if (!strcmp(fieldName, "reciprocal")) {
+      *out = ghostForRunway(c, rwy->reciprocalRunway());
+    } else if (!strcmp(fieldName, "ils_frequency_mhz")) {
+      *out = rwy->ILS() ? naNum(rwy->ILS()->get_freq() / 100.0) : naNil();
+    } else if (!strcmp(fieldName, "ils")) {
+      *out = ghostForNavaid(c, rwy->ILS());
+    } else {
+      return 0;
+    }
   } else {
-    return 0;
+    return 0;    
   }
   
   return "";
@@ -654,6 +819,21 @@ static const char* navaidGhostGetMember(naContext c, void* g, naRef field, naRef
   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");
@@ -661,7 +841,7 @@ static bool hashIsCoord(naRef h)
     return false;
   }
   
-  return naEqual(naVec_get(parents, 0), geoCoordClass);
+  return naEqual(naVec_get(parents, 0), geoCoordClass) != 0;
 }
 
 bool geodFromHash(naRef ref, SGGeod& result)
@@ -669,17 +849,9 @@ bool geodFromHash(naRef ref, SGGeod& result)
   if (!naIsHash(ref)) {
     return false;
   }
+
   
-// first, see if the hash contains a FGPositioned ghost - in which case
-// we can read off its position directly
-  naRef posGhost = naHash_cget(ref, (char*) "_positioned");
-  if (!naIsNil(posGhost)) {
-    FGPositioned* pos = positionedGhost(posGhost);
-    result = pos->geod();
-    return true;
-  }
-  
-// then check for manual latitude / longitude names
+// 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)) {
@@ -725,6 +897,16 @@ static int geodFromArgs(naRef* args, int offset, int argc, SGGeod& result)
       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;
@@ -790,10 +972,11 @@ static naRef f_geodinfo(naContext c, naRef me, int argc, naRef* args)
   double lat = naNumValue(args[0]).num;
   double lon = naNumValue(args[1]).num;
   double elev = argc == 3 ? naNumValue(args[2]).num : 10000;
-  const SGMaterial *mat;
+  const simgear::BVHMaterial *material;
   SGGeod geod = SGGeod::fromDegM(lon, lat, elev);
-  if(!globals->get_scenery()->get_elevation_m(geod, elev, &mat))
+  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();
@@ -817,35 +1000,6 @@ static naRef f_geodinfo(naContext c, naRef me, int argc, naRef* args)
 }
 
 
-class AirportInfoFilter : public FGAirport::AirportFilter
-{
-public:
-  AirportInfoFilter() : type(FGPositioned::AIRPORT) {
-  }
-  
-  bool fromArg(naRef arg)
-  {
-    const char *s = naStr_data(arg);
-    if(!strcmp(s, "airport")) type = FGPositioned::AIRPORT;
-    else if(!strcmp(s, "seaport")) type = FGPositioned::SEAPORT;
-    else if(!strcmp(s, "heliport")) type = FGPositioned::HELIPORT;
-    else
-      return false;
-    
-    return true;
-  }
-  
-  virtual FGPositioned::Type minType() const {
-    return type;
-  }
-  
-  virtual FGPositioned::Type maxType() const {
-    return type;
-  }
-  
-  FGPositioned::Type type;
-};
-
 // Returns data hash for particular or nearest airport of a <type>, or nil
 // on error.
 //
@@ -866,12 +1020,12 @@ static naRef f_airportinfo(naContext c, naRef me, int argc, naRef* args)
   
   double maxRange = 10000.0; // expose this? or pick a smaller value?
   
-  AirportInfoFilter filter; // defaults to airports only
+  FGAirport::TypeRunwayFilter filter; // defaults to airports only
   
   if(argc == 0) {
     // fall through and use AIRPORT
   } else if(argc == 1 && naIsString(args[0])) {
-    if (filter.fromArg(args[0])) {
+    if (filter.fromTypeString(naStr_data(args[0]))) {
       // done!
     } else {
       // user provided an <id>, hopefully
@@ -906,15 +1060,15 @@ static naRef f_findAirportsWithinRange(naContext c, naRef me, int argc, naRef* a
     naRuntimeError(c, "findAirportsWithinRange expected range (in nm) as arg %d", argOffset);
   }
   
-  AirportInfoFilter filter; // defaults to airports only
+  FGAirport::TypeRunwayFilter filter; // defaults to airports only
   double rangeNm = args[argOffset++].num;
   if (argOffset < argc) {
-    filter.fromArg(args[argOffset++]);
+    filter.fromTypeString(naStr_data(args[argOffset++]));
   }
   
   naRef r = naNewVector(c);
   
-  FGPositioned::List apts = FGPositioned::findWithinRange(pos, rangeNm, &filter);
+  FGPositionedList apts = FGPositioned::findWithinRange(pos, rangeNm, &filter);
   FGPositioned::sortByRange(apts, pos);
   
   BOOST_FOREACH(FGPositionedRef a, apts) {
@@ -932,15 +1086,15 @@ static naRef f_findAirportsByICAO(naContext c, naRef me, int argc, naRef* args)
   }
   
   int argOffset = 0;
-  string prefix(naStr_data(args[argOffset++]));
-  AirportInfoFilter filter; // defaults to airports only
+  std::string prefix(naStr_data(args[argOffset++]));
+  FGAirport::TypeRunwayFilter filter; // defaults to airports only
   if (argOffset < argc) {
-    filter.fromArg(args[argOffset++]);
+    filter.fromTypeString(naStr_data(args[argOffset++]));
   }
   
   naRef r = naNewVector(c);
   
-  FGPositioned::List apts = FGPositioned::findAllWithIdent(prefix, &filter, false);
+  FGPositionedList apts = FGPositioned::findAllWithIdent(prefix, &filter, false);
   
   BOOST_FOREACH(FGPositionedRef a, apts) {
     FGAirport* apt = (FGAirport*) a.get();
@@ -975,7 +1129,11 @@ static naRef f_airport_comms(naContext c, naRef me, int argc, naRef* args)
     naRef comms = naNewVector(c);
     
 // if we have an explicit type, return a simple vector of frequencies
-    if (argc > 0 && naIsScalar(args[0])) {
+    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);
         
@@ -1001,18 +1159,36 @@ static naRef f_airport_runway(naContext c, naRef me, int argc, naRef* args)
   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 naNil();
+
+  if (apt->hasRunwayWithIdent(ident)) {
+    return ghostForRunway(c, apt->getRunwayByIdent(ident));
+  } else if (apt->hasHelipadWithIdent(ident)) {
+    return ghostForHelipad(c, apt->getHelipadByIdent(ident));
   }
-  
-  return ghostForRunway(c, apt->getRunwayByIdent(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)
@@ -1162,19 +1338,27 @@ static naRef f_airport_parking(naContext c, naRef me, int argc, naRef* args)
   }
   
   FGAirportDynamics* dynamics = apt->getDynamics();
-  for (int i=0; i<dynamics->getNrOfParkings(); ++i) {
-    FGParking* park = dynamics->getParking(i);
-  // filter out based on availability and type
-    if (onlyAvailable && !park->isAvailable()) {
+  PositionedIDVec parkings = flightgear::NavDataCache::instance()->airportItemsOfType(apt->guid(),
+                                                                                      FGPositioned::PARKING);
+  
+  BOOST_FOREACH(PositionedID parking, parkings) {
+    // filter out based on availability and type
+    if (onlyAvailable && !dynamics->isParkingAvailable(parking)) {
       continue;
     }
     
+    FGParking* park = dynamics->getParking(parking);
     if (!type.empty() && (park->getType() != type)) {
       continue;
     }
     
-    naRef nm = stringToNasal(c, park->getName());
-    naVec_append(r, nm);
+    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;
@@ -1191,7 +1375,7 @@ static naRef f_airport_getSid(naContext c, naRef me, int argc, naRef* args)
     naRuntimeError(c, "airport.getSid passed invalid argument");
   }
   
-  string ident = naStr_data(args[0]);
+  std::string ident = naStr_data(args[0]);
   return ghostForProcedure(c, apt->findSIDWithIdent(ident));
 }
 
@@ -1206,7 +1390,7 @@ static naRef f_airport_getStar(naContext c, naRef me, int argc, naRef* args)
     naRuntimeError(c, "airport.getStar passed invalid argument");
   }
   
-  string ident = naStr_data(args[0]);
+  std::string ident = naStr_data(args[0]);
   return ghostForProcedure(c, apt->findSTARWithIdent(ident));
 }
 
@@ -1221,10 +1405,35 @@ static naRef f_airport_getApproach(naContext c, naRef me, int argc, naRef* args)
     naRuntimeError(c, "airport.getIAP passed invalid argument");
   }
   
-  string ident = naStr_data(args[0]);
+  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>])
@@ -1282,7 +1491,8 @@ static naRef f_navinfo(naContext c, naRef me, int argc, naRef* args)
     return naNil();
   }
   
-  navlist = globals->get_navlist()->findByIdentAndFreq( pos, id, 0.0, type );
+  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 ) {
@@ -1309,7 +1519,7 @@ static naRef f_findNavaidsWithinRange(naContext c, naRef me, int argc, naRef* ar
   
   naRef r = naNewVector(c);
   FGNavList::TypeFilter filter(type);
-  FGPositioned::List navs = FGPositioned::findWithinRange(pos, rangeNm, &filter);
+  FGPositionedList navs = FGPositioned::findWithinRange(pos, rangeNm, &filter);
   FGPositioned::sortByRange(navs, pos);
   
   BOOST_FOREACH(FGPositionedRef a, navs) {
@@ -1336,7 +1546,8 @@ static naRef f_findNavaidByFrequency(naContext c, naRef me, int argc, naRef* arg
     type = FGPositioned::typeFromName(naStr_data(args[argOffset]));
   }
   
-  nav_list_type navs = globals->get_navlist()->findAllByFreq(freqMhz, pos, type);
+  FGNavList::TypeFilter filter(type);
+  nav_list_type navs = FGNavList::findAllByFreq(freqMhz, pos, &filter);
   if (navs.empty()) {
     return naNil();
   }
@@ -1361,7 +1572,9 @@ static naRef f_findNavaidsByFrequency(naContext c, naRef me, int argc, naRef* ar
   }
   
   naRef r = naNewVector(c);
-  nav_list_type navs = globals->get_navlist()->findAllByFreq(freqMhz, pos, type);
+  
+  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()));
@@ -1381,13 +1594,14 @@ static naRef f_findNavaidsByIdent(naContext c, naRef me, int argc, naRef* args)
   }
   
   FGPositioned::Type type = FGPositioned::INVALID;
-  string ident = naStr_data(args[argOffset++]);
+  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 = globals->get_navlist()->findByIdentAndFreq(pos, ident, 0.0, type);
+  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()));
@@ -1396,6 +1610,29 @@ static naRef f_findNavaidsByIdent(naContext c, naRef me, int argc, naRef* args)
   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)
@@ -1511,6 +1748,233 @@ static naRef f_route(naContext c, naRef me, int argc, naRef* args)
   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");
+  }
+private:
+  
+  void callDelegateMethod(const char* method)
+  {
+    naRef f;
+    if (naMember_cget(_nasal->context(), _instance, method, &f) == 0) {
+      return; // no method on the delegate
+    }
+    
+    naRef arg[1];
+    arg[0] = ghostForFlightPlan(_nasal->context(), _plan);
+    _nasal->callMethod(f, _instance, 1, arg, naNil());
+  }
+  
+  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);
+  }
+  
+  ~NasalFPDelegateFactory()
+  {
+    _nasal->gcRelease(_gcSaveKey);
+  }
+  
+  virtual FlightPlan::Delegate* createFlightPlanDelegate(FlightPlan* fp)
+  {
+    naRef args[1];
+    args[0] = ghostForFlightPlan(_nasal->context(), fp);
+    naRef instance = _nasal->call(_func, 1, args, naNil());
+    if (naIsNil(instance)) {
+      return NULL;
+    }
+    
+    return new NasalFPDelegate(fp, _nasal, instance);
+  }
+private:
+  FGNasalSys* _nasal;
+  naRef _func;
+  int _gcSaveKey;
+};
+
+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);
+  
+  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");
+    }
+    wpt->setFlag(f);
+  }
+  
+  return ghostForWaypt(c, wpt);
+}
+
 static naRef f_flightplan_getWP(naContext c, naRef me, int argc, naRef* args)
 {
   FlightPlan* fp = flightplanGhost(me);
@@ -1635,26 +2099,31 @@ static naRef f_flightplan_insertWaypoints(naContext c, naRef me, int argc, naRef
   return naNil();
 }
 
-static naRef f_flightplan_clearPlan(naContext c, naRef me, int argc, naRef* args)
+static naRef f_flightplan_deleteWP(naContext c, naRef me, int argc, naRef* args)
 {
   FlightPlan* fp = flightplanGhost(me);
   if (!fp) {
-    naRuntimeError(c, "flightplan.clearPlan called on non-flightplan object");
+    naRuntimeError(c, "flightplan.deleteWP called on non-flightplan object");
   }
   
-  fp->clear();
+  if ((argc < 1) || !naIsNum(args[0])) {
+    naRuntimeError(c, "bad argument to flightplan.deleteWP");
+  }
+  
+  int index = (int) args[0].num;
+  fp->deleteIndex(index);
   return naNil();
 }
 
-static WayptFlag wayptFlagFromString(const char* s)
+static naRef f_flightplan_clearPlan(naContext c, naRef me, int argc, naRef* args)
 {
-  if (!strcmp(s, "sid")) return WPT_DEPARTURE;
-  if (!strcmp(s, "star")) return WPT_ARRIVAL;
-  if (!strcmp(s, "approach")) return WPT_APPROACH;
-  if (!strcmp(s, "missed")) return WPT_MISS;
-  if (!strcmp(s, "pseudo")) return WPT_PSEUDO;
+  FlightPlan* fp = flightplanGhost(me);
+  if (!fp) {
+    naRuntimeError(c, "flightplan.clearPlan called on non-flightplan object");
+  }
   
-  return (WayptFlag) 0;
+  fp->clear();
+  return naNil();
 }
 
 static naRef f_flightplan_clearWPType(naContext c, naRef me, int argc, naRef* args)
@@ -1669,6 +2138,10 @@ static naRef f_flightplan_clearWPType(naContext c, naRef me, int argc, naRef* ar
   }
   
   WayptFlag flag = wayptFlagFromString(naStr_data(args[0]));
+  if (flag == 0) {
+    naRuntimeError(c, "clearWPType: bad waypoint role");
+  }
+    
   fp->clearWayptsWithFlag(flag);
   return naNil();
 }
@@ -1683,36 +2156,115 @@ static naRef f_flightplan_clone(naContext c, naRef me, int argc, naRef* args)
   return ghostForFlightPlan(c, fp->clone());
 }
 
+static naRef f_flightplan_pathGeod(naContext c, naRef me, int argc, naRef* args)
+{
+  FlightPlan* fp = flightplanGhost(me);
+  if (!fp) {
+    naRuntimeError(c, "flightplan.clone called on non-flightplan object");
+  }
+
+  if ((argc < 1) || !naIsNum(args[0])) {
+    naRuntimeError(c, "bad argument to flightplan.pathGeod");
+  }
+
+  if ((argc > 1) && !naIsNum(args[1])) {
+    naRuntimeError(c, "bad argument to flightplan.pathGeod");
+  }
+
+  int index = (int) args[0].num;
+  double offset = (argc > 1) ? args[1].num : 0.0;
+  naRef result = naNewHash(c);
+  SGGeod g = fp->pointAlongRoute(index, offset);
+  hashset(c, result, "lat", naNum(g.getLatitudeDeg()));
+  hashset(c, result, "lon", naNum(g.getLongitudeDeg()));
+  return result;
+}
+
+static naRef f_flightplan_finish(naContext c, naRef me, int argc, naRef* args)
+{
+    FlightPlan* fp = flightplanGhost(me);
+    if (!fp) {
+        naRuntimeError(c, "flightplan.finish called on non-flightplan object");
+    }
+    
+    fp->finish();
+    return naNil();
+}
+
 static naRef f_leg_setSpeed(naContext c, naRef me, int argc, naRef* args)
 {
   FlightPlan::Leg* leg = fpLegGhost(me);
   if (!leg) {
     naRuntimeError(c, "leg.setSpeed called on non-flightplan-leg object");
   }
+
+    double speed = 0.0;
+    if ((argc < 2) || !convertToNum(args[0], speed))
+        naRuntimeError(c, "bad arguments to setSpeed");
+    
+  RouteRestriction rr = routeRestrictionFromString(naStr_data(args[1]));
+  leg->setSpeed(rr, speed);
   
-  if (argc < 2) {
-    naRuntimeError(c, "bad arguments to leg.setSpeed");
+  return naNil();
+}
+
+static naRef f_leg_setAltitude(naContext c, naRef me, int argc, naRef* args)
+{
+  FlightPlan::Leg* leg = fpLegGhost(me);
+  if (!leg) {
+    naRuntimeError(c, "leg.setAltitude called on non-flightplan-leg object");
   }
   
+    double alt = 0.0;
+    if ((argc < 2) || !convertToNum(args[0], alt))
+        naRuntimeError(c, "bad arguments to leg.setAltitude");
+    
   RouteRestriction rr = routeRestrictionFromString(naStr_data(args[1]));
-  leg->setSpeed(rr, args[0].num);
+    leg->setAltitude(rr, alt);
+
   return naNil();
 }
 
-static naRef f_leg_setAltitude(naContext c, naRef me, int argc, naRef* args)
+static naRef f_leg_path(naContext c, naRef me, int argc, naRef* args)
 {
   FlightPlan::Leg* leg = fpLegGhost(me);
   if (!leg) {
     naRuntimeError(c, "leg.setAltitude called on non-flightplan-leg object");
   }
   
-  if (argc < 2) {
-    naRuntimeError(c, "bad arguments to leg.setAltitude");
+  RoutePath path(leg->owner());
+  SGGeodVec gv(path.pathForIndex(leg->index()));
+
+  naRef result = naNewVector(c);
+  BOOST_FOREACH(SGGeod p, gv) {
+    // construct a geo.Coord!
+    naRef coord = naNewHash(c);
+    hashset(c, coord, "lat", naNum(p.getLatitudeDeg()));
+    hashset(c, coord, "lon", naNum(p.getLongitudeDeg()));
+    naVec_append(result, coord);
   }
-  
-  RouteRestriction rr = routeRestrictionFromString(naStr_data(args[1]));
-  leg->setAltitude(rr, args[0].num);
-  return naNil();
+
+  return result;
+}
+
+static naRef f_leg_courseAndDistanceFrom(naContext c, naRef me, int argc, naRef* args)
+{
+    FlightPlan::Leg* leg = fpLegGhost(me);
+    if (!leg) {
+        naRuntimeError(c, "leg.courseAndDistanceFrom called on non-flightplan-leg object");
+    }
+    
+    SGGeod pos;
+    geodFromArgs(args, 0, argc, pos);
+    
+    double courseDeg;
+    double distanceM;
+    boost::tie(courseDeg, distanceM) = leg->waypoint()->courseAndDistanceFrom(pos);
+    
+    naRef result = naNewVector(c);
+    naVec_append(result, naNum(courseDeg));
+    naVec_append(result, naNum(distanceM * SG_METER_TO_NM));
+    return result;
 }
 
 static naRef f_waypoint_navaid(naContext c, naRef me, int argc, naRef* args)
@@ -1791,6 +2343,55 @@ static naRef f_procedure_transition(naContext c, naRef me, int argc, naRef* args
   return ghostForProcedure(c, trans);
 }
 
+static naRef f_procedure_route(naContext c, naRef me, int argc, naRef* args)
+{
+  Procedure* proc = procedureGhost(me);
+  if (!proc) {
+    naRuntimeError(c, "procedure.route called on non-procedure object");
+  }
+  
+// wrapping up tow different routines here - approach routing from the IAF
+// to the associated runway, and SID/STAR routing via an enroute transition
+// and possibly a runway transition or not.
+  if (Approach::isApproach(proc->type())) {
+    WayptRef iaf;
+    if (argc > 0) {
+      iaf = wayptFromArg(args[0]);
+    }
+    
+    WayptVec r;
+    Approach* app = (Approach*) proc;
+    if (!app->route(iaf, r)) {
+      SG_LOG(SG_NASAL, SG_WARN, "procedure.route failed for Approach somehow");
+      return naNil();
+    }
+    
+    return convertWayptVecToNasal(c, r);
+  } else if ((proc->type() != PROCEDURE_SID) && (proc->type() != PROCEDURE_STAR)) {
+    naRuntimeError(c, "procedure.route called on unsuitable procedure type");
+  }
+  
+  int argOffset = 0;
+  FGRunway* rwy = runwayGhost(args[0]);
+  if (rwy) ++argOffset;
+  
+  ArrivalDeparture* ad = (ArrivalDeparture*) proc;
+  Transition* trans = NULL;
+  if (argOffset < argc) {
+    trans = (Transition*) procedureGhost(args[argOffset]);
+  }
+  
+  // note either runway or trans may be NULL - that's ok
+  WayptVec r;
+  if (!ad->route(rwy, trans, r)) {
+    SG_LOG(SG_NASAL, SG_WARN, "prcoedure.route failed for ArrvialDeparture somehow");
+    return naNil();
+  }
+  
+  return convertWayptVecToNasal(c, r);
+}
+
+
 // Table of extension functions.  Terminate with zeros.
 static struct { const char* name; naCFunction func; } funcs[] = {
   { "carttogeod", f_carttogeod },
@@ -1804,7 +2405,12 @@ static struct { const char* name; naCFunction func; } funcs[] = {
   { "findNavaidByFrequency", f_findNavaidByFrequency },
   { "findNavaidsByFrequency", f_findNavaidsByFrequency },
   { "findNavaidsByID", f_findNavaidsByIdent },
+  { "findFixesByID", f_findFixesByIdent },
   { "flightplan", f_route },
+  { "registerFlightPlanDelegate", f_registerFPDelegate },
+  { "createWP", f_createWP },
+  { "createWPFrom", f_createWPFrom },
+  { "airwaysRoute", f_airwaySearch },
   { "magvar", f_magvar },
   { "courseAndDistance", f_courseAndDistance },
   { "greatCircleMove", f_greatCircleMove },
@@ -1814,12 +2420,14 @@ static struct { const char* name; naCFunction func; } funcs[] = {
 };
 
 
-naRef initNasalPositioned(naRef globals, naContext c, naRef gcSave)
+naRef initNasalPositioned(naRef globals, naContext c)
 {
     airportPrototype = naNewHash(c);
-    hashset(c, gcSave, "airportProto", airportPrototype);
+    naSave(c, airportPrototype);
   
     hashset(c, airportPrototype, "runway", naNewFunc(c, naNewCCode(c, f_airport_runway)));
+    hashset(c, airportPrototype, "runwaysWithoutReciprocals", naNewFunc(c, naNewCCode(c, f_airport_runwaysWithoutReciprocals)));
+    hashset(c, airportPrototype, "helipad", naNewFunc(c, naNewCCode(c, f_airport_runway)));
     hashset(c, airportPrototype, "tower", naNewFunc(c, naNewCCode(c, f_airport_tower)));
     hashset(c, airportPrototype, "comms", naNewFunc(c, naNewCCode(c, f_airport_comms)));
     hashset(c, airportPrototype, "sids", naNewFunc(c, naNewCCode(c, f_airport_sids)));
@@ -1829,9 +2437,11 @@ naRef initNasalPositioned(naRef globals, naContext c, naRef gcSave)
     hashset(c, airportPrototype, "getSid", naNewFunc(c, naNewCCode(c, f_airport_getSid)));
     hashset(c, airportPrototype, "getStar", naNewFunc(c, naNewCCode(c, f_airport_getStar)));
     hashset(c, airportPrototype, "getIAP", naNewFunc(c, naNewCCode(c, f_airport_getApproach)));
+    hashset(c, airportPrototype, "findBestRunwayForPos", naNewFunc(c, naNewCCode(c, f_airport_findBestRunway)));
+    hashset(c, airportPrototype, "tostring", naNewFunc(c, naNewCCode(c, f_airport_toString)));
   
     flightplanPrototype = naNewHash(c);
-    hashset(c, gcSave, "flightplanProto", flightplanPrototype);
+    naSave(c, flightplanPrototype);
       
     hashset(c, flightplanPrototype, "getWP", naNewFunc(c, naNewCCode(c, f_flightplan_getWP)));
     hashset(c, flightplanPrototype, "currentWP", naNewFunc(c, naNewCCode(c, f_flightplan_currentWP))); 
@@ -1839,29 +2449,33 @@ naRef initNasalPositioned(naRef globals, naContext c, naRef gcSave)
     hashset(c, flightplanPrototype, "getPlanSize", naNewFunc(c, naNewCCode(c, f_flightplan_numWaypoints)));
     hashset(c, flightplanPrototype, "appendWP", naNewFunc(c, naNewCCode(c, f_flightplan_appendWP))); 
     hashset(c, flightplanPrototype, "insertWP", naNewFunc(c, naNewCCode(c, f_flightplan_insertWP))); 
+    hashset(c, flightplanPrototype, "deleteWP", naNewFunc(c, naNewCCode(c, f_flightplan_deleteWP))); 
     hashset(c, flightplanPrototype, "insertWPAfter", naNewFunc(c, naNewCCode(c, f_flightplan_insertWPAfter))); 
     hashset(c, flightplanPrototype, "insertWaypoints", naNewFunc(c, naNewCCode(c, f_flightplan_insertWaypoints))); 
     hashset(c, flightplanPrototype, "cleanPlan", naNewFunc(c, naNewCCode(c, f_flightplan_clearPlan))); 
     hashset(c, flightplanPrototype, "clearWPType", naNewFunc(c, naNewCCode(c, f_flightplan_clearWPType))); 
     hashset(c, flightplanPrototype, "clone", naNewFunc(c, naNewCCode(c, f_flightplan_clone))); 
-  
+    hashset(c, flightplanPrototype, "pathGeod", naNewFunc(c, naNewCCode(c, f_flightplan_pathGeod)));
+    hashset(c, flightplanPrototype, "finish", naNewFunc(c, naNewCCode(c, f_flightplan_finish)));
+    
     waypointPrototype = naNewHash(c);
-    hashset(c, gcSave, "wayptProto", waypointPrototype);
+    naSave(c, waypointPrototype);
     
     hashset(c, waypointPrototype, "navaid", naNewFunc(c, naNewCCode(c, f_waypoint_navaid)));
     hashset(c, waypointPrototype, "runway", naNewFunc(c, naNewCCode(c, f_waypoint_runway)));
     hashset(c, waypointPrototype, "airport", naNewFunc(c, naNewCCode(c, f_waypoint_airport)));
   
     procedurePrototype = naNewHash(c);
-    hashset(c, gcSave, "procedureProto", procedurePrototype);
- //   hashset(c, procedurePrototype, "runwayTransition", naNewFunc(c, naNewCCode(c, f_procedure_runwayTransition)));
+    naSave(c, procedurePrototype);
     hashset(c, procedurePrototype, "transition", naNewFunc(c, naNewCCode(c, f_procedure_transition)));
-   // hashset(c, procedurePrototype, "buildPath", naNewFunc(c, naNewCCode(c, f_procedure_build)));
+    hashset(c, procedurePrototype, "route", naNewFunc(c, naNewCCode(c, f_procedure_route)));
   
     fpLegPrototype = naNewHash(c);
-    hashset(c, gcSave, "fpLegProto", fpLegPrototype);
+    naSave(c, fpLegPrototype);
     hashset(c, fpLegPrototype, "setSpeed", naNewFunc(c, naNewCCode(c, f_leg_setSpeed)));
     hashset(c, fpLegPrototype, "setAltitude", naNewFunc(c, naNewCCode(c, f_leg_setAltitude)));
+    hashset(c, fpLegPrototype, "path", naNewFunc(c, naNewCCode(c, f_leg_path)));
+    hashset(c, fpLegPrototype, "courseAndDistanceFrom", naNewFunc(c, naNewCCode(c, f_leg_courseAndDistanceFrom)));
   
     for(int i=0; funcs[i].name; i++) {
       hashset(c, globals, funcs[i].name,