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// Fig. 7.36: door.cpp

// Member-function definitions for class Door.

#include <iostream>



using std::cout;

using std::endl;



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

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

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

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



// constructor

Door::Door() 

   : open( false )  // initialize open to false

{ 

   cout << "door created" << endl; 



} // end Door constructor



// destructor

Door::~Door() 

{

   cout << "door destroyed" << endl; 



} // end ~Door destructor



// open the door

void Door::openDoor( Person * const passengerPtr, 

   Person * const nextPassengerPtr, Floor &currentFloor, 

   Elevator &elevator ) 

{ 

   if ( !open ) {  // if door is not open, open door

      open = true; 

   

      cout << "elevator opens its door on floor "

           << currentFloor.getNumber() << endl;



      // if passenger is in elevator, tell person to leave

      if ( passengerPtr != 0 ) {

         passengerPtr->exitElevator( currentFloor, elevator );

         delete passengerPtr; // passenger leaves simulation



      } // end if



      // if passenger waiting to enter elevator, 

      // tell passenger to enter

      if ( nextPassengerPtr != 0 )

         nextPassengerPtr->enterElevator( 

            elevator, currentFloor );



   } // end outer if



} // end function openDoor



// close the door

void Door::closeDoor( const Floor &currentFloor ) 

{

   if ( open ) {  // if door is open, close door

      open = false; 

      cout << "elevator closes its door on floor "

           << currentFloor.getNumber() << endl;



   } // end if



} // end function closeDoor



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 * (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice      *

 * Hall. All Rights Reserved.                                             *

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