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// Fig. 7.41: elevator.h
// Elevator class definition.
#ifndef ELEVATOR_H
#define ELEVATOR_H
#include "elevatorButton.h"
#include "door.h"
#include "bell.h"
class Floor; // forward declaration
class Person; // forward declaration
class Elevator {
public:
Elevator( Floor &, Floor & ); // constructor
~Elevator(); // destructor
void summonElevator( int ); // request to service floor
void prepareToLeave( bool ); // prepare to leave
void processTime( int ); // give current time to elevator
void passengerEnters( Person * const ); // board a passenger
void passengerExits(); // exit a passenger
// public object accessible to client code with
// access to Elevator object
ElevatorButton elevatorButton;
private:
// utility functions
void processPossibleArrival();
void processPossibleDeparture();
void arriveAtFloor( Floor & );
void move();
// static constants that represent time required to travel
// between floors and directions of the elevator
static const int ELEVATOR_TRAVEL_TIME;
static const int UP;
static const int DOWN;
// data members
int currentBuildingClockTime; // current time
bool moving; // elevator state
int direction; // current direction
int currentFloor; // current location
int arrivalTime; // time to arrive at a floor
bool floor1NeedsService; // floor1 service flag
bool floor2NeedsService; // floor2 service flag
Floor &floor1Ref; // reference to floor1
Floor &floor2Ref; // reference to floor2
Person *passengerPtr; // pointer to passenger
Door door; // door object
Bell bell; // bell object
}; // end class Elevator
#endif // ELEVATOR_H
/**************************************************************************
* (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice *
* Hall. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/
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