Event.hpp

#pragma once
 
#include "state_representation/parameters/Predicate.hpp"
 
namespace state_representation {
 
class Event : public Predicate {
private:
  bool previous_predicate_value_;
 
public:
  explicit Event(const std::string& name);
 
  bool read_value();
 
  void set_value(const bool& value) override;
 
  bool get_previous_value() const;
 
  friend std::ostream& operator<<(std::ostream& os, const Event& event);
};
 
inline bool Event::read_value() {
  bool value = this->get_value();
  this->Predicate::set_value(false);
  return value;
}
 
inline void Event::set_value(const bool& value) {
  bool current_value = this->get_value();
  bool result = value && (current_value || !this->previous_predicate_value_);
  this->previous_predicate_value_ = value;
  this->Predicate::set_value(result);
}
 
inline bool Event::get_previous_value() const {
  return this->previous_predicate_value_;
}
}// namespace state_representation