342 lines
8.9 KiB
C++
342 lines
8.9 KiB
C++
//
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// simple.cxx -- a really simplistic class to manage airport ID,
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// lat, lon of the center of one of it's runways, and
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// elevation in feet.
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//
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// Written by Curtis Olson, started April 1998.
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// Updated by Durk Talsma, started December, 2004.
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//
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// Copyright (C) 1998 Curtis L. Olson - http://www.flightgear.org/~curt
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "simple.hxx"
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#include <simgear/misc/sg_path.hxx>
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#include <simgear/props/props.hxx>
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#include <simgear/debug/logstream.hxx>
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#include <simgear/sg_inlines.h>
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#include <Environment/environment_mgr.hxx>
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#include <Environment/environment.hxx>
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#include <Main/fg_props.hxx>
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#include <Airports/runways.hxx>
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#include <Airports/pavement.hxx>
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#include <Airports/dynamics.hxx>
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#include <Airports/xmlloader.hxx>
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// magic import of a helper which uses FGPositioned internals
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extern char** searchAirportNamesAndIdents(const std::string& aFilter);
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/***************************************************************************
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* FGAirport
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***************************************************************************/
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FGAirport::FGAirport(const string &id, const SGGeod& location, const SGGeod& tower_location,
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const string &name, bool has_metar, Type aType) :
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FGPositioned(aType, id, location),
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_tower_location(tower_location),
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_name(name),
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_has_metar(has_metar),
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_dynamics(0)
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{
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}
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FGAirport::~FGAirport()
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{
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delete _dynamics;
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}
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bool FGAirport::isAirport() const
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{
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return type() == AIRPORT;
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}
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bool FGAirport::isSeaport() const
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{
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return type() == SEAPORT;
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}
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bool FGAirport::isHeliport() const
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{
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return type() == HELIPORT;
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}
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FGAirportDynamics * FGAirport::getDynamics()
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{
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if (_dynamics != 0) {
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return _dynamics;
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} else {
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//cerr << "Trying to load dynamics for " << _id << endl;
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_dynamics = new FGAirportDynamics(this);
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XMLLoader::load(_dynamics);
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FGRunwayPreference rwyPrefs(this);
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XMLLoader::load(&rwyPrefs);
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_dynamics->setRwyUse(rwyPrefs);
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//FGSidStar SIDs(this);
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XMLLoader::load(_dynamics->getSIDs());
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}
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return _dynamics;
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}
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unsigned int FGAirport::numRunways() const
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{
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return mRunways.size();
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}
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FGRunway* FGAirport::getRunwayByIndex(unsigned int aIndex) const
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{
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assert(aIndex >= 0 && aIndex < mRunways.size());
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return mRunways[aIndex];
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}
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bool FGAirport::hasRunwayWithIdent(const string& aIdent) const
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{
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return (getIteratorForRunwayIdent(aIdent) != mRunways.end());
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}
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FGRunway* FGAirport::getRunwayByIdent(const string& aIdent) const
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{
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Runway_iterator it = getIteratorForRunwayIdent(aIdent);
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if (it == mRunways.end()) {
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SG_LOG(SG_GENERAL, SG_ALERT, "no such runway '" << aIdent << "' at airport " << ident());
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throw sg_range_exception("unknown runway " + aIdent + " at airport:" + ident(), "FGAirport::getRunwayByIdent");
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}
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return *it;
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}
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FGAirport::Runway_iterator
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FGAirport::getIteratorForRunwayIdent(const string& aIdent) const
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{
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string ident(aIdent);
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if ((aIdent.size() == 1) || !isdigit(aIdent[1])) {
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ident = "0" + aIdent;
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}
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Runway_iterator it = mRunways.begin();
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for (; it != mRunways.end(); ++it) {
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if ((*it)->ident() == ident) {
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return it;
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}
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}
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return it; // end()
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}
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FGRunway* FGAirport::findBestRunwayForHeading(double aHeading) const
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{
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Runway_iterator it = mRunways.begin();
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FGRunway* result = NULL;
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double currentBestQuality = 0.0;
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SGPropertyNode *param = fgGetNode("/sim/airport/runways/search", true);
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double lengthWeight = param->getDoubleValue("length-weight", 0.01);
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double widthWeight = param->getDoubleValue("width-weight", 0.01);
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double surfaceWeight = param->getDoubleValue("surface-weight", 10);
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double deviationWeight = param->getDoubleValue("deviation-weight", 1);
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for (; it != mRunways.end(); ++it) {
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double good = (*it)->score(lengthWeight, widthWeight, surfaceWeight);
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double dev = aHeading - (*it)->headingDeg();
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SG_NORMALIZE_RANGE(dev, -180.0, 180.0);
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double bad = fabs(deviationWeight * dev) + 1e-20;
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double quality = good / bad;
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if (quality > currentBestQuality) {
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currentBestQuality = quality;
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result = *it;
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}
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}
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return result;
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}
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bool FGAirport::hasHardRunwayOfLengthFt(double aLengthFt) const
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{
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unsigned int numRunways(mRunways.size());
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for (unsigned int r=0; r<numRunways; ++r) {
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FGRunway* rwy = mRunways[r];
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if (rwy->isReciprocal()) {
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continue; // we only care about lengths, so don't do work twice
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}
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if (rwy->isHardSurface() && (rwy->lengthFt() >= aLengthFt)) {
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return true; // we're done!
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}
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} // of runways iteration
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return false;
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}
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unsigned int FGAirport::numTaxiways() const
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{
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return mTaxiways.size();
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}
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FGTaxiway* FGAirport::getTaxiwayByIndex(unsigned int aIndex) const
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{
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assert(aIndex >= 0 && aIndex < mTaxiways.size());
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return mTaxiways[aIndex];
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}
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unsigned int FGAirport::numPavements() const
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{
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return mPavements.size();
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}
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FGPavement* FGAirport::getPavementByIndex(unsigned int aIndex) const
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{
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assert(aIndex >= 0 && aIndex < mPavements.size());
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return mPavements[aIndex];
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}
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void FGAirport::setRunwaysAndTaxiways(vector<FGRunwayPtr>& rwys,
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vector<FGTaxiwayPtr>& txwys,
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vector<FGPavementPtr>& pvts)
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{
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mRunways.swap(rwys);
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Runway_iterator it = mRunways.begin();
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for (; it != mRunways.end(); ++it) {
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(*it)->setAirport(this);
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}
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mTaxiways.swap(txwys);
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mPavements.swap(pvts);
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}
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FGRunway* FGAirport::getActiveRunwayForUsage() const
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{
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static FGEnvironmentMgr* envMgr = NULL;
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if (!envMgr) {
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envMgr = (FGEnvironmentMgr *) globals->get_subsystem("environment");
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}
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FGEnvironment stationWeather(envMgr->getEnvironment(mPosition));
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double windSpeed = stationWeather.get_wind_speed_kt();
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double hdg = stationWeather.get_wind_from_heading_deg();
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if (windSpeed <= 0.0) {
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hdg = 270; // This forces West-facing rwys to be used in no-wind situations
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// which is consistent with Flightgear's initial setup.
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}
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return findBestRunwayForHeading(hdg);
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}
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FGAirport* FGAirport::findClosest(const SGGeod& aPos, double aCuttofNm, Filter* filter)
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{
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AirportFilter aptFilter;
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if (filter == NULL) {
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filter = &aptFilter;
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}
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FGPositionedRef r = FGPositioned::findClosest(aPos, aCuttofNm, filter);
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if (!r) {
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return NULL;
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}
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return static_cast<FGAirport*>(r.ptr());
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}
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FGAirport::HardSurfaceFilter::HardSurfaceFilter(double minLengthFt) :
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mMinLengthFt(minLengthFt)
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{
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}
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bool FGAirport::HardSurfaceFilter::passAirport(FGAirport* aApt) const
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{
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return aApt->hasHardRunwayOfLengthFt(mMinLengthFt);
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}
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FGAirport* FGAirport::findByIdent(const std::string& aIdent)
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{
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FGPositionedRef r;
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AirportFilter filter;
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r = FGPositioned::findNextWithPartialId(r, aIdent, &filter);
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if (!r) {
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return NULL; // we don't warn here, let the caller do that
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}
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return static_cast<FGAirport*>(r.ptr());
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}
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FGAirport* FGAirport::getByIdent(const std::string& aIdent)
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{
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FGPositionedRef r;
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AirportFilter filter;
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r = FGPositioned::findNextWithPartialId(r, aIdent, &filter);
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if (!r) {
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throw sg_range_exception("No such airport with ident: " + aIdent);
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}
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return static_cast<FGAirport*>(r.ptr());
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}
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char** FGAirport::searchNamesAndIdents(const std::string& aFilter)
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{
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// we delegate all the work to a horrible helper in FGPositioned, which can
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// access the (private) index data.
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return searchAirportNamesAndIdents(aFilter);
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}
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// find basic airport location info from airport database
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const FGAirport *fgFindAirportID( const string& id)
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{
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if ( id.empty() ) {
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return NULL;
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}
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return FGAirport::findByIdent(id);
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}
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// get airport elevation
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double fgGetAirportElev( const string& id )
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{
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SG_LOG( SG_GENERAL, SG_BULK,
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"Finding elevation for airport: " << id );
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const FGAirport *a=fgFindAirportID( id);
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if (a) {
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return a->getElevation();
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} else {
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return -9999.0;
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}
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}
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// get airport position
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SGGeod fgGetAirportPos( const string& id )
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{
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SG_LOG( SG_ATC, SG_BULK,
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"Finding position for airport: " << id );
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const FGAirport *a = fgFindAirportID( id);
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if (a) {
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return SGGeod::fromDegM(a->getLongitude(), a->getLatitude(), a->getElevation());
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} else {
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return SGGeod::fromDegM(0.0, 0.0, -9999.0);
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}
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}
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