src/AIModel/performancedb.cxx

   1 #include <simgear/math/SGMath.hxx>
   2 #include <simgear/misc/sg_path.hxx>
   3 #include <simgear/props/props.hxx>
   4 #include <simgear/props/props_io.hxx>
   5 #include <simgear/xml/easyxml.hxx>
   6
   7 #include <Main/globals.hxx>
   8 #include <iostream>
   9 #include <fstream>
  10
  11 #include "performancedb.hxx"
  12
  13 using std::string;
  14 using std::cerr;
  15
  16 PerformanceDB::PerformanceDB()
  17 {
  18     SGPath dbpath( globals->get_fg_root() );
  19
  20
  21     dbpath.append( "/AI/Aircraft/" );
  22     dbpath.append( "performancedb.xml");
  23     load(dbpath);
  24 }
  25
  26
  27 PerformanceDB::~PerformanceDB()
  28 {}
  29
  30 void PerformanceDB::registerPerformanceData(const std::string& id, PerformanceData* data) {
  31     //TODO if key exists already replace data "inplace", i.e. copy to existing PerfData instance
  32     // this updates all aircraft currently using the PerfData instance.
  33     _db[id] = data;
  34 }
  35
  36 void PerformanceDB::registerPerformanceData(const std::string& id, const std::string& filename) {
  37     registerPerformanceData(id, new PerformanceData(filename));
  38 }
  39
  40 PerformanceData* PerformanceDB::getDataFor(const std::string& id) {
  41     if (_db.find(id) == _db.end()) // id not found -> return jet_transport data
  42         return _db["jet_transport"];
  43
  44     return _db[id];
  45 }
  46
  47 void PerformanceDB::load(SGPath filename) {
  48     string name;
  49     double acceleration;
  50     double deceleration;
  51     double climbRate;
  52     double descentRate;
  53     double vRotate;
  54     double vTakeOff;
  55     double vClimb;
  56     double vCruise;
  57     double vDescent;
  58     double vApproach;
  59     double vTouchdown;
  60     double vTaxi;
  61     SGPropertyNode root;
  62     try {
  63         readProperties(filename.str(), &root);
  64     } catch (const sg_exception &) {
  65         SG_LOG(SG_GENERAL, SG_ALERT,
  66             "Error reading AI aircraft performance database: " << filename.str());
  67         return;
  68     }
  69
  70     SGPropertyNode * node = root.getNode("performancedb");
  71     for (int i = 0; i < node->nChildren(); i++) {
  72         SGPropertyNode * db_node = node->getChild(i);
  73             name         = db_node->getStringValue("type", "heavy_jet");
  74             acceleration = db_node->getDoubleValue("acceleration-kts-hour", 4.0);
  75             deceleration = db_node->getDoubleValue("deceleration-kts-hour", 2.0);
  76             climbRate    = db_node->getDoubleValue("climbrate-fpm", 3000.0);
  77             descentRate  = db_node->getDoubleValue("decentrate-fpm", 1500.0);
  78             vRotate      = db_node->getDoubleValue("rotate-speed-kts", 150.0);
  79             vTakeOff     = db_node->getDoubleValue("takeoff-speed-kts", 160.0);
  80             vClimb       = db_node->getDoubleValue("climb-speed-kts", 300.0);
  81             vCruise      = db_node->getDoubleValue("cruise-speed-kts", 430.0);
  82             vDescent     = db_node->getDoubleValue("decent-speed-kts", 300.0);
  83             vApproach    = db_node->getDoubleValue("approach-speed-kts", 170.0);
  84             vTouchdown   = db_node->getDoubleValue("touchdown-speed-kts", 150.0);
  85             vTaxi        = db_node->getDoubleValue("taxi-speed-kts", 15.0);
  86
  87             registerPerformanceData(name, new PerformanceData(
  88                 acceleration, deceleration, climbRate, descentRate, vRotate, vTakeOff, vClimb, vCruise, vDescent, vApproach, vTouchdown, vTaxi));
  89     }
  90 }
  91