gum::TaxiSimulator Class Reference

A class to simulate the Taxi problem. More...

#include <agrum/FMDP/simulation/taxiSimulator.h>

Inheritance diagram for gum::TaxiSimulator:

Collaboration diagram for gum::TaxiSimulator:

Public Attributes
Instantiation	currentState_
	Tha state in which the system currently is. More...
Instantiation	endState_

Public Member Functions
Constructors, Destructors.
	TaxiSimulator ()
	Default constructor. More...
	~TaxiSimulator ()
	Default destructor. More...
Variables
const DiscreteVariable *	primeVar (const DiscreteVariable *mainVar)
	Iteration over the variables of the simulated probleme. More...
SequenceIteratorSafe< const DiscreteVariable *>	beginVariables ()
	Iteration over the variables of the simulated probleme. More...
SequenceIteratorSafe< const DiscreteVariable *>	endVariables ()
	Iteration over the variables of the simulated probleme. More...
INLINE void	setInitialState (const Instantiation &initialState)
	Sets the intial statefrom which we begun the simulation. More...
void	setInitialStateRandomly ()
	Sets the intial statefrom which we begun the simulation. More...
INLINE void	setEndState (const Instantiation &endState)
	Sets the final states upon which a run is over. More...
INLINE const Instantiation &	currentState ()
	Sets the intial statefrom which we begun the simulation. More...

States
bool	hasReachEnd ()
	Choses a random state as the first test for a run. More...
Instantiation	randomState_ ()
	Choses a random state as the first test for a run. More...

Actions
const std::string &	actionName (Idx actionId)
	Iteration over the variables of the simulated probleme. More...
SequenceIteratorSafe< Idx >	beginActions ()
	Iteration over the variables of the simulated probleme. More...
SequenceIteratorSafe< Idx >	endActions ()
	Iteration over the variables of the simulated probleme. More...
void	perform (Idx)
	Iteration over the variables of the simulated probleme. More...
void	_performGoNorth_ ()
	Iteration over the variables of the simulated probleme. More...
void	_performGoEast_ ()
	Iteration over the variables of the simulated probleme. More...
void	_performGoSouth_ ()
	Iteration over the variables of the simulated probleme. More...
void	_performGoWest_ ()
	Iteration over the variables of the simulated probleme. More...
void	_performPickUp_ ()
	Iteration over the variables of the simulated probleme. More...
void	_performPutDown_ ()
	Iteration over the variables of the simulated probleme. More...
void	_performFillUp_ ()
	Iteration over the variables of the simulated probleme. More...

Rewards
double	reward ()
	Sets the intial statefrom which we begun the simulation. More...
void	_evalReward_ ()
bool	_isAtDestination_ (TaxiSimulationLandmark passDest, TaxiSimulationLandmarkX xCurPos, TaxiSimulationLandmarkY yCurPos)
bool	_isAtMeetPoint_ (TaxiSimulationLandmark passpos, TaxiSimulationLandmarkX xCurPos, TaxiSimulationLandmarkY yCurPos)

Detailed Description

A class to simulate the Taxi problem.

Definition at line 87 of file taxiSimulator.h.

Constructor & Destructor Documentation

TaxiSimulator()

gum::TaxiSimulator::TaxiSimulator

(

)

Default constructor.

Definition at line 39 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                               : AbstractSimulator() {
    GUM_CONSTRUCTOR(TaxiSimulator);

    // *****************************************************************************************
    // Défintion des variables du problème

    // Position TaxiSimulator
    _xPos_ = new LabelizedVariable("xPos", "Position horizontale du TaxiSimulator");
    _yPos_ = new LabelizedVariable("yPos", "Position verticale du TaxiSimulator");
    _xPos_->eraseLabels();
    _yPos_->eraseLabels();
    for (Idx pos = 0; pos < 5; pos++) {
      std::stringstream ss;
      ss << pos;
      _xPos_->addLabel(ss.str());
      _yPos_->addLabel(ss.str());
    }

    // Position et destination passager
    _passengerPos_  = new LabelizedVariable("PassengerPos", "Position du Passager", 5);
    _passengerDest_ = new LabelizedVariable("PassengerDest", "Destination du Passager", 4);
    _passengerPos_->changeLabel(HOME, "Home");
    _passengerDest_->changeLabel(HOME, "Home");
    _passengerPos_->changeLabel(WORK, "Work");
    _passengerDest_->changeLabel(WORK, "Work");
    _passengerPos_->changeLabel(THEATER, "Theater");
    _passengerDest_->changeLabel(THEATER, "Theater");
    _passengerPos_->changeLabel(CLUB, "Club");
    _passengerDest_->changeLabel(CLUB, "Club");
    _passengerPos_->changeLabel(TAXI, "Taxi");

    _fuelLevel_ = new LabelizedVariable("FuelLevel", "Niveau du réservoir", 14);

    // Ajout à séquence
    _taxiVars_.insert(_xPos_);
    _taxiVars_.insert(_yPos_);
    _taxiVars_.insert(_passengerPos_);
    _taxiVars_.insert(_passengerDest_);
    _taxiVars_.insert(_fuelLevel_);

    // Prime version creation
    for (SequenceIteratorSafe< const DiscreteVariable* > varIter = this->beginVariables();
         varIter != this->endVariables();
         ++varIter) {
      DiscreteVariable* primeVar = (*varIter)->clone();
      primeVar->setName((*varIter)->name() + "'");
      _primeMap_.insert((*varIter), primeVar);
    }

    // *****************************************************************************************

    // *****************************************************************************************
    // Défintion des actions du problème
    _taxiActions_.insert(GoNorth);
    _actionMap_.insert(GoNorth, new std::string("Go North"));
    _taxiActions_.insert(GoEast);
    _actionMap_.insert(GoEast, new std::string("Go East"));
    _taxiActions_.insert(GoSouth);
    _actionMap_.insert(GoSouth, new std::string("Go South"));
    _taxiActions_.insert(GoWest);
    _actionMap_.insert(GoWest, new std::string("Go West"));
    _taxiActions_.insert(PickUp);
    _actionMap_.insert(PickUp, new std::string("Pick Up"));
    _taxiActions_.insert(PutDown);
    _actionMap_.insert(PutDown, new std::string("Put Down"));
    _taxiActions_.insert(FillUp);
    _actionMap_.insert(FillUp, new std::string("FillUp"));
  }

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~TaxiSimulator()

gum::TaxiSimulator::~TaxiSimulator

(

)

Default destructor.

Definition at line 108 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                {
    GUM_DESTRUCTOR(TaxiSimulator);

    for (BijectionIteratorSafe< const DiscreteVariable*, const DiscreteVariable* > varIter
         = _primeMap_.beginSafe();
         varIter != _primeMap_.endSafe();
         ++varIter) {
      delete varIter.first();
      delete varIter.second();
    }
  }

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Member Function Documentation

_evalReward_()

void gum::TaxiSimulator::_evalReward_ ( )

private

Definition at line 334 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                   {
    TaxiSimulationLandmarkX xCurPos
       = (TaxiSimulationLandmarkX)this->currentState_.valFromPtr(_xPos_);
    TaxiSimulationLandmarkY yCurPos
       = (TaxiSimulationLandmarkY)this->currentState_.valFromPtr(_yPos_);
    TaxiSimulationLandmark passPos
       = (TaxiSimulationLandmark)this->currentState_.valFromPtr(_passengerPos_);
    TaxiSimulationLandmark passDest
       = (TaxiSimulationLandmark)this->currentState_.valFromPtr(_passengerDest_);

    if (_lastAction_ == PutDown) {
      if (passPos == TAXI) {
        if (_isAtDestination_(passDest, xCurPos, yCurPos))
          _reward_ = 30.0;
        else
          _reward_ = 0.0;
        return;
      }
      _reward_ = 0;
      return;
    }

    if (_lastAction_ == PickUp) {
      if (_isAtMeetPoint_(passPos, xCurPos, yCurPos))
        _reward_ = 20.0;
      else
        _reward_ = 0.0;
      return;
    }

    if (currentState_.valFromPtr(_fuelLevel_) == 0 && _lastAction_ != FillUp) {
      _reward_ = 0.0;
      return;
    }

    if (_lastAction_ == FillUp && (xCurPos != STATIONX || yCurPos != STATIONY)) {
      _reward_ = 0.0;
      return;
    }

    _reward_ = 10.0;   //-1.0;
  }

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_isAtDestination_()

bool gum::TaxiSimulator::_isAtDestination_ ( TaxiSimulationLandmark  passDest, TaxiSimulationLandmarkX  xCurPos, TaxiSimulationLandmarkY  yCurPos  )

private

Definition at line 377 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                                         {
    switch (passDest) {
      case HOME: {
        if (xCurPos == HOMEX && yCurPos == HOMEY) return true;
        break;
      }
      case WORK: {
        if (xCurPos == WORKX && yCurPos == WORKY) return true;
        break;
      }
      case THEATER: {
        if (xCurPos == THEATERX && yCurPos == THEATERY) return true;
        break;
      }
      case CLUB: {
        if (xCurPos == CLUBX && yCurPos == CLUBY) return true;
        break;
      }
      case TAXI:
        return false;
    }
    return false;
  }

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_isAtMeetPoint_()

bool gum::TaxiSimulator::_isAtMeetPoint_ ( TaxiSimulationLandmark  passpos, TaxiSimulationLandmarkX  xCurPos, TaxiSimulationLandmarkY  yCurPos  )

private

Definition at line 403 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                                       {
    switch (passPos) {
      case HOME: {
        if (xCurPos == HOMEX && yCurPos == HOMEY) return true;
        break;
      }
      case WORK: {
        if (xCurPos == WORKX && yCurPos == WORKY) return true;
        break;
      }
      case THEATER: {
        if (xCurPos == THEATERX && yCurPos == THEATERY) return true;
        break;
      }
      case CLUB: {
        if (xCurPos == CLUBX && yCurPos == CLUBY) return true;
        break;
      }
      case TAXI:
        return false;
    }
    return false;
  }

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_performFillUp_()

void gum::TaxiSimulator::_performFillUp_ ( )

private

Iteration over the variables of the simulated probleme.

Definition at line 321 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                      {
    TaxiSimulationLandmarkX xCurPos
       = (TaxiSimulationLandmarkX)this->currentState_.valFromPtr(_xPos_);
    TaxiSimulationLandmarkY yCurPos
       = (TaxiSimulationLandmarkY)this->currentState_.valFromPtr(_yPos_);

    if (xCurPos == STATIONX && yCurPos == STATIONY) currentState_.chgVal(_fuelLevel_, 13);
  }

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_performGoEast_()

void gum::TaxiSimulator::_performGoEast_ ( )

private

Iteration over the variables of the simulated probleme.

Definition at line 207 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                      {
    Idx xCurPos = this->currentState_.valFromPtr(_xPos_);
    Idx yCurPos = this->currentState_.valFromPtr(_yPos_);

    if (xCurPos == 4) return;
    if (xCurPos == 0 || xCurPos == 2)
      if (yCurPos == 0 || yCurPos == 1) return;
    if (xCurPos == 1)
      if (yCurPos == 3 || yCurPos == 4) return;

    currentState_.chgVal(_xPos_, ++xCurPos);
  }

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_performGoNorth_()

void gum::TaxiSimulator::_performGoNorth_ ( )

private

Iteration over the variables of the simulated probleme.

Definition at line 198 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                       {
    Idx curPos = this->currentState_.valFromPtr(_yPos_);
    if (curPos < 4) currentState_.chgVal(_yPos_, ++curPos);
  }

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_performGoSouth_()

void gum::TaxiSimulator::_performGoSouth_ ( )

private

Iteration over the variables of the simulated probleme.

Definition at line 224 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                       {
    Idx curPos = this->currentState_.valFromPtr(_yPos_);
    if (curPos > 0) currentState_.chgVal(_yPos_, --curPos);
  }

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_performGoWest_()

void gum::TaxiSimulator::_performGoWest_ ( )

private

Iteration over the variables of the simulated probleme.

Definition at line 233 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                      {
    Idx xCurPos = this->currentState_.valFromPtr(_xPos_);
    Idx yCurPos = this->currentState_.valFromPtr(_yPos_);

    if (xCurPos == 0) return;
    if (xCurPos == 1 || xCurPos == 3)
      if (yCurPos == 0 || yCurPos == 1) return;
    if (xCurPos == 2)
      if (yCurPos == 3 || yCurPos == 4) return;

    currentState_.chgVal(_xPos_, --xCurPos);
  }

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_performPickUp_()

void gum::TaxiSimulator::_performPickUp_ ( )

private

Iteration over the variables of the simulated probleme.

Definition at line 250 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                      {
    TaxiSimulationLandmarkX xCurPos
       = (TaxiSimulationLandmarkX)this->currentState_.valFromPtr(_xPos_);
    TaxiSimulationLandmarkY yCurPos
       = (TaxiSimulationLandmarkY)this->currentState_.valFromPtr(_yPos_);
    TaxiSimulationLandmark passPos
       = (TaxiSimulationLandmark)this->currentState_.valFromPtr(_passengerPos_);
    switch (passPos) {
      case HOME: {
        if (xCurPos == HOMEX && yCurPos == HOMEY) currentState_.chgVal(_passengerPos_, TAXI);
        return;
      }
      case WORK: {
        if (xCurPos == WORKX && yCurPos == WORKY) currentState_.chgVal(_passengerPos_, TAXI);
        return;
      }
      case THEATER: {
        if (xCurPos == THEATERX && yCurPos == THEATERY) currentState_.chgVal(_passengerPos_, TAXI);
        return;
      }
      case CLUB: {
        if (xCurPos == CLUBX && yCurPos == CLUBY) currentState_.chgVal(_passengerPos_, TAXI);
        return;
      }
      case TAXI:
        return;
    }
  }

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_performPutDown_()

void gum::TaxiSimulator::_performPutDown_ ( )

private

Iteration over the variables of the simulated probleme.

Definition at line 283 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                       {
    TaxiSimulationLandmarkX xCurPos
       = (TaxiSimulationLandmarkX)this->currentState_.valFromPtr(_xPos_);
    TaxiSimulationLandmarkY yCurPos
       = (TaxiSimulationLandmarkY)this->currentState_.valFromPtr(_yPos_);
    TaxiSimulationLandmark passPos
       = (TaxiSimulationLandmark)this->currentState_.valFromPtr(_passengerPos_);
    TaxiSimulationLandmark passDest
       = (TaxiSimulationLandmark)this->currentState_.valFromPtr(_passengerDest_);
    if (passPos == TAXI) {
      switch (passDest) {
        case HOME: {
          if (xCurPos == HOMEX && yCurPos == HOMEY) currentState_.chgVal(_passengerPos_, HOME);
          return;
        }
        case WORK: {
          if (xCurPos == WORKX && yCurPos == WORKY) currentState_.chgVal(_passengerPos_, WORK);
          return;
        }
        case THEATER: {
          if (xCurPos == THEATERX && yCurPos == THEATERY)
            currentState_.chgVal(_passengerPos_, THEATER);
          return;
        }
        case CLUB: {
          if (xCurPos == CLUBX && yCurPos == CLUBY) currentState_.chgVal(_passengerPos_, CLUB);
          return;
        }
        case TAXI:
          return;
      }
    }
  }

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actionName()

const std::string& gum::TaxiSimulator::actionName ( Idx  actionId )

inlinevirtual

Iteration over the variables of the simulated probleme.

Implements gum::AbstractSimulator.

Definition at line 142 of file taxiSimulator.h.

{ return *_actionMap_[actionId]; }

beginActions()

SequenceIteratorSafe< Idx > gum::TaxiSimulator::beginActions ( )

inlinevirtual

Iteration over the variables of the simulated probleme.

Implements gum::AbstractSimulator.

Definition at line 145 of file taxiSimulator.h.

{ return _taxiActions_.beginSafe(); }

beginVariables()

SequenceIteratorSafe< const DiscreteVariable* > gum::TaxiSimulator::beginVariables ( )

inlinevirtual

Iteration over the variables of the simulated probleme.

Implements gum::AbstractSimulator.

Definition at line 130 of file taxiSimulator.h.

                                                                     {
      return _taxiVars_.beginSafe();
    }

currentState()

INLINE const Instantiation& gum::AbstractSimulator::currentState ( )

inlineinherited

Sets the intial statefrom which we begun the simulation.

Definition at line 87 of file abstractSimulator.h.

References gum::AbstractSimulator::reward().

{ return currentState_; }

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endActions()

SequenceIteratorSafe< Idx > gum::TaxiSimulator::endActions ( )

inlinevirtual

Iteration over the variables of the simulated probleme.

Implements gum::AbstractSimulator.

Definition at line 146 of file taxiSimulator.h.

{ return _taxiActions_.endSafe(); }

endVariables()

SequenceIteratorSafe< const DiscreteVariable* > gum::TaxiSimulator::endVariables ( )

inlinevirtual

Iteration over the variables of the simulated probleme.

Implements gum::AbstractSimulator.

Definition at line 133 of file taxiSimulator.h.

{ return _taxiVars_.endSafe(); }

hasReachEnd()

bool gum::TaxiSimulator::hasReachEnd ( )

virtual

Choses a random state as the first test for a run.

Reimplemented from gum::AbstractSimulator.

Definition at line 148 of file taxiSimulator.cpp.

                                  {
    //    if( currentState_.valFromPtr( _passengerPos_) ==
    //    currentState_.valFromPtr( _passengerDest_) )
    //      return true;

    //    if( currentState_.valFromPtr( _fuelLevel_) == 0 )
    //      return true;

    return false;
  }

perform()

void gum::TaxiSimulator::perform ( Idx  actionId )

virtual

Iteration over the variables of the simulated probleme.

Implements gum::AbstractSimulator.

Definition at line 168 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                          {
    _lastAction_ = (TaxiSimulationAction)actionId;

    _evalReward_();

    Idx curFuelLevel = currentState_.valFromPtr(_fuelLevel_);
    if (curFuelLevel > 0) currentState_.chgVal(_fuelLevel_, --curFuelLevel);

    switch (actionId) {
      case GoNorth:
        return _performGoNorth_();
      case GoEast:
        return _performGoEast_();
      case GoSouth:
        return _performGoSouth_();
      case GoWest:
        return _performGoWest_();
      case PickUp:
        return _performPickUp_();
      case PutDown:
        return _performPutDown_();
      case FillUp:
        return _performFillUp_();
    }
  }

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primeVar()

const DiscreteVariable* gum::TaxiSimulator::primeVar ( const DiscreteVariable *  mainVar )

inlinevirtual

Iteration over the variables of the simulated probleme.

Implements gum::AbstractSimulator.

Definition at line 125 of file taxiSimulator.h.

                                                                      {
      return _primeMap_.second(mainVar);
    }

randomState_()

Instantiation gum::TaxiSimulator::randomState_ ( )

protectedvirtual

Choses a random state as the first test for a run.

Reimplemented from gum::AbstractSimulator.

Definition at line 124 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                            {
    Instantiation randy = AbstractSimulator::randomState_();
    //    Idx curFuelLevel = randy.valFromPtr( _fuelLevel_);
    //    while(curFuelLevel > 12 || curFuelLevel < 5)
    //      curFuelLevel = (Idx)(((double)std::rand( ) / (double)RAND_MAX) *
    //      7.0) + 5;
    //    randy.chgVal( _fuelLevel_, curFuelLevel);

    //    TaxiSimulationLandmark passPos = (TaxiSimulationLandmark)
    //    randy.valFromPtr( _passengerPos_);
    //    TaxiSimulationLandmark passDest = (TaxiSimulationLandmark)
    //    randy.valFromPtr( _passengerDest_);
    //    while( passPos == passDest || passPos == TAXI )
    //      passPos = (TaxiSimulationLandmark) (((double)std::rand( ) /
    //      (double)RAND_MAX) * 3.0);
    //    randy.chgVal( _passengerPos_, passPos);

    return randy;
  }

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reward()

double gum::TaxiSimulator::reward ( )

virtual

Sets the intial statefrom which we begun the simulation.

Implements gum::AbstractSimulator.

Definition at line 163 of file taxiSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

{ return _reward_; }

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setEndState()

INLINE void gum::AbstractSimulator::setEndState ( const Instantiation &  endState )

inlineinherited

Sets the final states upon which a run is over.

Definition at line 81 of file abstractSimulator.h.

References gum::AbstractSimulator::reward().

{ endState_ = endState; }

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setInitialState()

INLINE void gum::AbstractSimulator::setInitialState ( const Instantiation &  initialState )

inlineinherited

Sets the intial statefrom which we begun the simulation.

Definition at line 72 of file abstractSimulator.h.

References gum::AbstractSimulator::reward().

{ currentState_ = initialState; }

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setInitialStateRandomly()

void gum::AbstractSimulator::setInitialStateRandomly ( )

inherited

Sets the intial statefrom which we begun the simulation.

Definition at line 64 of file abstractSimulator.cpp.

References gum::Set< Key, Alloc >::emplace().

                                                  {
    bool hre = true;
    while (hre) {
      currentState_ = randomState_();
      hre           = hasReachEnd();
    }
  }

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Member Data Documentation

_actionMap_

HashTable< Idx, std::string* > gum::TaxiSimulator::_actionMap_

private

Definition at line 191 of file taxiSimulator.h.

_fuelLevel_

LabelizedVariable* gum::TaxiSimulator::_fuelLevel_

private

Definition at line 187 of file taxiSimulator.h.

_lastAction_

TaxiSimulationAction gum::TaxiSimulator::_lastAction_

private

Definition at line 193 of file taxiSimulator.h.

_passengerDest_

LabelizedVariable* gum::TaxiSimulator::_passengerDest_

private

Definition at line 186 of file taxiSimulator.h.

_passengerPos_

LabelizedVariable* gum::TaxiSimulator::_passengerPos_

private

Definition at line 185 of file taxiSimulator.h.

_primeMap_

Bijection< const DiscreteVariable*, const DiscreteVariable* > gum::TaxiSimulator::_primeMap_

private

Definition at line 182 of file taxiSimulator.h.

_reward_

double gum::TaxiSimulator::_reward_

private

Reward.

Definition at line 196 of file taxiSimulator.h.

_taxiActions_

Sequence< Idx > gum::TaxiSimulator::_taxiActions_

private

Actions.

Definition at line 190 of file taxiSimulator.h.

_taxiVars_

Sequence< const DiscreteVariable* > gum::TaxiSimulator::_taxiVars_

private

Variables data structures.

Definition at line 181 of file taxiSimulator.h.

_xPos_

LabelizedVariable* gum::TaxiSimulator::_xPos_

private

Definition at line 183 of file taxiSimulator.h.

_yPos_

LabelizedVariable* gum::TaxiSimulator::_yPos_

private

Definition at line 184 of file taxiSimulator.h.

currentState_

Instantiation gum::AbstractSimulator::currentState_

inherited

Tha state in which the system currently is.

Definition at line 125 of file abstractSimulator.h.

endState_

Instantiation gum::AbstractSimulator::endState_

inherited

Definition at line 125 of file abstractSimulator.h.

---

The documentation for this class was generated from the following files:

• agrum/FMDP/simulation/taxiSimulator.h
• agrum/FMDP/simulation/taxiSimulator.cpp