Use the density values from the environment subsystem, to properly handle

[flightgear.git] / src / FDM / flight.cxx

diff --git a/src/FDM/flight.cxx b/src/FDM/flight.cxx
index 2845c8e3b35be515dbc93c37ba35fdb56d37b10f..2694fa7f44f3b31ee44f9ac69ac990db788710b7 100644 (file)
--- a/src/FDM/flight.cxx
+++ b/src/FDM/flight.cxx
@@ -159,6 +159,7 @@ FGInterface::_setup ()
     sin_latitude=cos_latitude=0;
     sin_longitude=cos_longitude=0;
     altitude_agl=0;
+    _acmodel = 0;
 }
 
 void
@@ -182,6 +183,12 @@ FGInterface::common_init ()
 //     stamp();
 //     set_remainder( 0 );
 
+    // linking in FGAircraft instance...
+    // FIXME: when using multiple instances, then there will be more than
+    // one model so get_aircraft_model will have to be indexed to the correct
+    // model.
+    _acmodel = globals->get_aircraft_model();
+
     // Set initial position
     SG_LOG( SG_FLIGHT, SG_INFO, "...initializing position..." );
     set_Longitude( fgGetDouble("/position/longitude-deg")
@@ -190,6 +197,8 @@ FGInterface::common_init ()
                   * SGD_DEGREES_TO_RADIANS );
     double ground_elev_m = globals->get_scenery()->get_cur_elev();
     double ground_elev_ft = ground_elev_m * SG_METER_TO_FEET;
+    _acmodel->get3DModel()->getFGLocation()->set_cur_elev_m( ground_elev_m );
+    _set_Runway_altitude ( ground_elev_ft );
     if ( fgGetBool("/sim/startup/onground")
          || fgGetDouble("/position/altitude-ft") < ground_elev_ft ) {
         fgSetDouble("/position/altitude-ft", ground_elev_ft);
@@ -448,8 +457,7 @@ void FGInterface::_updateGeodeticPosition( double lat, double lon, double alt )
     _set_Geodetic_Position( lat, lon, alt );
 
     _set_Sea_level_radius( sl_radius * SG_METER_TO_FEET );
-    _set_Runway_altitude( globals->get_scenery()->get_cur_elev()
-                          * SG_METER_TO_FEET );
+    _set_Runway_altitude( getACModel()->get3DModel()->getFGLocation()->get_cur_elev_m() * SG_METER_TO_FEET );
 
     _set_sin_lat_geocentric( lat_geoc );
     _set_cos_lat_geocentric( lat_geoc );
@@ -505,8 +513,7 @@ void FGInterface::_updateGeocentricPosition( double lat_geoc, double lon,
     _set_Geodetic_Position( lat_geod, lon, alt );
 
     _set_Sea_level_radius( sl_radius2 * SG_METER_TO_FEET );
-    _set_Runway_altitude( globals->get_scenery()->get_cur_elev()
-                          * SG_METER_TO_FEET );
+    _set_Runway_altitude( getACModel()->get3DModel()->getFGLocation()->get_cur_elev_m() * SG_METER_TO_FEET );
 
     _set_sin_lat_geocentric( lat_geoc );
     _set_cos_lat_geocentric( lat_geoc );