if (globals->get_scenery()->get_elevation_m(hitpos, _elevation_m, &_material)){
//_ht_agl_ft = pos.getElevationFt() - _elevation_m * SG_METER_TO_FEET;
if (_material) {
if (globals->get_scenery()->get_elevation_m(hitpos, _elevation_m, &_material)){
//_ht_agl_ft = pos.getElevationFt() - _elevation_m * SG_METER_TO_FEET;
if (_material) {