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// Fig. 7.44: floor.cpp

// Member-function definitions for class Floor.

#include <iostream>



using std::cout;

using std::endl;



#include "floor.h"     // Floor class definition

#include "person.h"    // Person class definition

#include "elevator.h"  // Elevator class definition

#include "door.h"      // Door class definition



// static constants that represent the floor numbers

const int Floor::FLOOR1 = 1;

const int Floor::FLOOR2 = 2;



// constructor

Floor::Floor(int number, Elevator &elevatorHandle ) 

   : floorButton( number, elevatorHandle ), 

     floorNumber( number ), 

     elevatorRef( elevatorHandle ),

     occupantPtr ( 0 ),

     light( floorNumber )     

{ 

   cout << "floor " << floorNumber << " created" << endl; 



} // end Floor constructor



// destructor

Floor::~Floor() 

{ 

   delete occupantPtr;

   cout << "floor " << floorNumber << " destroyed" << endl;



} // end ~Floor destructor



// determine whether floor is occupied

bool Floor::isOccupied() const 

{

   return ( occupantPtr != 0 ); 



} // end function isOccupied



// return this floor's number

int Floor::getNumber() const 

{ 

   return floorNumber; 



} // end function getNumber



// person arrives on floor

void Floor::personArrives( Person * const personPtr )

{ 

   occupantPtr = personPtr; 



} // end function personArrives



// notify floor that elevator has arrived

Person *Floor::elevatorArrived()

{

   cout << "floor " << floorNumber 

        << " resets its button" << endl;



   floorButton.resetButton();

   light.turnOn();



   return occupantPtr;  



} // end function elevatorArrived



// tell floor that elevator is leaving

void Floor::elevatorLeaving() 

{ 

   light.turnOff(); 



} // end function elevatorLeaving



// notifies floor that person is leaving

void Floor::personBoardingElevator() 

{ 

   occupantPtr = 0;  // person no longer on floor



} // end function personBoardingElevator



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