/******************************************************************************
* TrafficMGr.cxx
* Written by Durk Talsma, started May 5, 2004.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*
**************************************************************************/
/* This a prototype version of a top-level flight plan manager for Flightgear.
* It parses the fgtraffic.txt file and determine for a specific time/date,
* where each aircraft listed in this file is at the current time.
*
* I'm currently assuming the following simplifications:
* 1) The earth is a perfect sphere
* 2) Each aircraft flies a perfect great circle route.
* 3) Each aircraft flies at a constant speed (with infinite accelerations and
* decelerations)
* 4) Each aircraft leaves at exactly the departure time.
* 5) Each aircraft arrives at exactly the specified arrival time.
*
*
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <time.h>
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <algorithm>
#include <plib/sg.h>
#include <plib/ul.h>
#include <simgear/compiler.h>
#include <simgear/math/polar3d.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/props/props.hxx>
#include <simgear/route/waypoint.hxx>
#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/xml/easyxml.hxx>
#include <AIModel/AIAircraft.hxx>
#include <AIModel/AIFlightPlan.hxx>
#include <AIModel/AIBase.hxx>
#include <Airports/simple.hxx>
#include <Main/fg_init.hxx>
#include "TrafficMgr.hxx"
SG_USING_STD(sort);
/******************************************************************************
* TrafficManager
*****************************************************************************/
FGTrafficManager::FGTrafficManager()
{
score = 0;
runCount = 0;
}
FGTrafficManager:: ~FGTrafficManager()
{
for (ScheduleVectorIterator sched = scheduledAircraft.begin(); sched != scheduledAircraft.end(); sched++)
{
delete (*sched);
}
scheduledAircraft.clear();
// for (FGScheduledFlightVecIterator flt = flights.begin(); flt != flights.end(); flt++)
// {
// delete (*flt);
// }
// flights.clear();
}
void FGTrafficManager::init()
{
//cerr << "Initializing Schedules" << endl;
//time_t now = time(NULL) + fgGetLong("/sim/time/warp");
//currAircraft = scheduledAircraft.begin();
//while (currAircraft != scheduledAircraft.end())
// {
// if (!(currAircraft->init()))
// {
// currAircraft=scheduledAircraft.erase(currAircraft);
// //cerr << "Erasing " << currAircraft->getRegistration() << endl;
// }
// else
// {
// currAircraft++;
// }
// }
// Sort by points: Aircraft with frequent visits to the
// startup airport will be processed first
ulDir* d, *d2;
ulDirEnt* dent, *dent2;
SGPath aircraftDir = globals->get_fg_root();
/* keep the following three lines (which mimicks the old "fixed path" behavior)
* until we have some AI models with traffic in the base package
*/
SGPath path = aircraftDir;
path.append("Traffic/fgtraffic.xml");
if (path.exists())
readXML(path.str(),*this);
aircraftDir.append("AI/Aircraft");
if ((d = ulOpenDir(aircraftDir.c_str())) != NULL)
{
while((dent = ulReadDir(d)) != NULL) {
//cerr << "Scanning : " << dent->d_name << endl;
if (string(dent->d_name) != string(".") &&
string(dent->d_name) != string("..") &&
dent->d_isdir)
{
SGPath currACDir = aircraftDir;
currACDir.append(dent->d_name);
if ((d2 = ulOpenDir(currACDir.c_str())) == NULL)
return;
while ((dent2 = ulReadDir(d2)) != NULL) {
SGPath currFile = currACDir;
currFile.append(dent2->d_name);
if (currFile.extension() == string("xml"))
{
//cerr << "found " << dent2->d_name << " for parsing" << endl;
SGPath currFile = currACDir;
currFile.append(dent2->d_name);
SG_LOG(SG_GENERAL, SG_INFO, "Scanning " << currFile.str() << " for traffic");
readXML(currFile.str(),*this);
}
}
ulCloseDir(d2);
}
}
ulCloseDir(d);
}
// Sort by points: Aircraft with frequent visits to the
// startup airport will be processed first
sort(scheduledAircraft.begin(), scheduledAircraft.end(), compareSchedules);
currAircraft = scheduledAircraft.begin();
currAircraftClosest = scheduledAircraft.begin();
//cerr << "Done initializing schedules" << endl;
}
void FGTrafficManager::update(double /*dt*/)
{
time_t now = time(NULL) + fgGetLong("/sim/time/warp");
if (scheduledAircraft.size() == 0) {
//SG_LOG( SG_GENERAL, SG_INFO, "Returned Running TrafficManager::Update() ");
return;
}
if(currAircraft == scheduledAircraft.end())
{
currAircraft = scheduledAircraft.begin();
}
if (!((*currAircraft)->update(now)))
{
// after proper initialization, we shouldnt get here.
// But let's make sure
SG_LOG( SG_GENERAL, SG_ALERT, "Failed to update aircraft schedule in traffic manager");
}
currAircraft++;
//SG_LOG( SG_GENERAL, SG_INFO, "Done Running TrafficManager::Update() ");
}
void FGTrafficManager::release(int id)
{
releaseList.push_back(id);
}
bool FGTrafficManager::isReleased(int id)
{
IdListIterator i = releaseList.begin();
while (i != releaseList.end())
{
if ((*i) == id)
{
releaseList.erase(i);
return true;
}
i++;
}
return false;
}
void FGTrafficManager::startXML () {
//cout << "Start XML" << endl;
}
void FGTrafficManager::endXML () {
//cout << "End XML" << endl;
}
void FGTrafficManager::startElement (const char * name, const XMLAttributes &atts) {
const char * attval;
//cout << "Start element " << name << endl;
//FGTrafficManager temp;
//for (int i = 0; i < atts.size(); i++)
// if (string(atts.getName(i)) == string("include"))
attval = atts.getValue("include");
if (attval != 0)
{
//cout << "including " << attval << endl;
SGPath path =
globals->get_fg_root();
path.append("/Traffic/");
path.append(attval);
readXML(path.str(), *this);
}
elementValueStack.push_back( "" );
// cout << " " << atts.getName(i) << '=' << atts.getValue(i) << endl;
}
void FGTrafficManager::endElement (const char * name) {
//cout << "End element " << name << endl;
string element(name);
string value = elementValueStack.back();
elementValueStack.pop_back();
if (element == string("model"))
mdl = value;
else if (element == string("livery"))
livery = value;
else if (element == string("registration"))
registration = value;
else if (element == string("airline"))
airline = value;
else if (element == string("actype"))
acType = value;
else if (element == string("flighttype"))
flighttype = value;
else if (element == string("radius"))
radius = atoi(value.c_str());
else if (element == string("offset"))
offset = atoi(value.c_str());
else if (element == string("performance-class"))
m_class = value;
else if (element == string("heavy"))
{
if(value == string("true"))
heavy = true;
else
heavy = false;
}
else if (element == string("callsign"))
callsign = value;
else if (element == string("fltrules"))
fltrules = value;
else if (element == string("port"))
port = value;
else if (element == string("time"))
timeString = value;
else if (element == string("departure"))
{
departurePort = port;
departureTime = timeString;
}
else if (element == string("cruise-alt"))
cruiseAlt = atoi(value.c_str());
else if (element == string("arrival"))
{
arrivalPort = port;
arrivalTime = timeString;
}
else if (element == string("repeat"))
repeat = value;
else if (element == string("flight"))
{
// We have loaded and parsed all the information belonging to this flight
// so we temporarily store it.
//cerr << "Pusing back flight " << callsign << endl;
//cerr << callsign << " " << fltrules << " "<< departurePort << " " << arrivalPort << " "
// << cruiseAlt << " " << departureTime<< " "<< arrivalTime << " " << repeat << endl;
//Prioritize aircraft
string apt = fgGetString("/sim/presets/airport-id");
//cerr << "Airport information: " << apt << " " << departurePort << " " << arrivalPort << endl;
if (departurePort == apt) score++;
flights.push_back(new FGScheduledFlight(callsign,
fltrules,
departurePort,
arrivalPort,
cruiseAlt,
departureTime,
arrivalTime,
repeat));
}
else if (element == string("aircraft"))
{
int proportion = (int) (fgGetDouble("/sim/traffic-manager/proportion") * 100);
int randval = rand() & 100;
if (randval < proportion) {
scheduledAircraft.push_back(new FGAISchedule(mdl,
livery,
registration,
heavy,
acType,
airline,
m_class,
flighttype,
radius,
offset,
score,
flights));
// while(flights.begin() != flights.end()) {
// flights.pop_back();
// }
}
for (FGScheduledFlightVecIterator flt = flights.begin(); flt != flights.end(); flt++)
{
delete (*flt);
}
flights.clear();
SG_LOG( SG_GENERAL, SG_BULK, "Reading aircraft : "
<< registration
<< " with prioritization score "
<< score);
score = 0;
}
}
void FGTrafficManager::data (const char * s, int len) {
string token = string(s,len);
//cout << "Character data " << string(s,len) << endl;
elementValueStack.back() += token;
}
void FGTrafficManager::pi (const char * target, const char * data) {
//cout << "Processing instruction " << target << ' ' << data << endl;
}
void FGTrafficManager::warning (const char * message, int line, int column) {
SG_LOG(SG_IO, SG_WARN, "Warning: " << message << " (" << line << ',' << column << ')');
}
void FGTrafficManager::error (const char * message, int line, int column) {
SG_LOG(SG_IO, SG_ALERT, "Error: " << message << " (" << line << ',' << column << ')');
}