abstractSimulator.cpp

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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
 *       - Christophe GONZALES(_at_AMU)                                     *
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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
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//======================================================================
#include <agrum/FMDP/simulation/abstractSimulator.h>
 
//======================================================================
 
namespace gum {
 
  // ===========================================================================
  // Constructors, Destructors.
  // ===========================================================================
 
  /*
   * Default constructor.
   */
  AbstractSimulator::AbstractSimulator() {
    GUM_CONSTRUCTOR(AbstractSimulator);
    ;
  }
 
  /*
   * Default destructor.
   */
  AbstractSimulator::~AbstractSimulator() {
    GUM_DESTRUCTOR(AbstractSimulator);
    ;
  }
 
  // ===========================================================================
  //
  // ===========================================================================
 
  void AbstractSimulator::setInitialStateRandomly() {
    bool hre = true;
    while (hre) {
      currentState_ = randomState_();
      hre           = hasReachEnd();
    }
  }
 
  Instantiation AbstractSimulator::randomState_() {
    Instantiation retState;
    for (auto varIter = this->beginVariables(); varIter != this->endVariables(); ++varIter) {
      retState.add(**varIter);
      retState.chgVal(**varIter, randomValue((*varIter)->domainSize()));
    }
    return retState;
  }

  bool AbstractSimulator::hasReachEnd() {
    if (endState_.empty()) return false;
 
    for (auto varIter = endState_.variablesSequence().beginSafe();
         varIter != endState_.variablesSequence().endSafe();
         ++varIter)
      if (endState_.val(**varIter) != currentState_.val(**varIter)) return false;
    return true;
  }
 
 
}   // End of namespace gum