[XP] Ignore altitude delta when remote aircraft is on ground

Author: oktal3700

src/plugins/simulator/xplane/simulatorxplane.cpp

@@ -1094,7 +1094,7 @@ namespace BlackSimPlugin::XPlane
                 // adjust altitude to compensate for XP12 temperature effect
                 const CLength relativeAltitude = interpolatedSituation.geodeticHeight() - getOwnAircraftPosition().geodeticHeight();
                 const double altitudeDeltaWeight = 2 - qBound(3000.0, relativeAltitude.abs().value(CLengthUnit::ft()), 6000.0) / 3000;
-                const CLength alt = interpolatedSituation.getAltitude() + m_altitudeDelta * altitudeDeltaWeight;
+                const CLength alt = interpolatedSituation.getAltitude() + m_altitudeDelta * altitudeDeltaWeight * (1 - interpolatedSituation.getOnGroundFactor());
                 interpolatedSituation.setAltitude({ alt, interpolatedSituation.getAltitude().getReferenceDatum() });
 
                 // update situation