///////////////////////////////////////////////////////////////
//  state.cpp  - defines states in terms of the events       //
//               that trigger transitions to another state   //
//                                                           //
//  Language:    Visual C++, ver 5.0                         //
//  Platform:    Micron Dual Pentium 200, NT 4.0             //
//  Application: Design Patterns - property pattern, Su98    //
//  Author:      Jim Fawcett, CST 2-187, (314) 443-3948      //
//               fawcett@neptune.syr.edu                     //
///////////////////////////////////////////////////////////////

#include <iostream>
#include "state.h"

using namespace std;

vector<ElevBase*> ElevBase::registry(numStates);

ElevBase* getEvent(ElevBase *pState) {

  int eventType;
  cout << 
    "Enter (upButton=1, arrived=2, dnButton=3, quit = 4) > ";
  cin  >> eventType;

  switch(eventType) {
  case 1  : return (pState->upButton());
  case 2  : return (pState-> arrived());
  case 3  : return (pState->dnButton());
  case 4  : cout << "  end of simulation\n\n"; return 0;
  default : cout << "  no such state - try again\n";
            return (getEvent(pState));
  }
}

void main() {

  onFirstFloor onFirstFloorState;  
  ElevBase *pCurrElevState = onFirstFloorState.makeState(onFF);
  
  goingUp goingUpState;     
  goingUpState.makeState(goUp);
  
  onSecondFloor onSecondFloorState; 
  onSecondFloorState.makeState(onSF);

  goingDown goingDownState;   
  goingDownState.makeState(goDn);

  while(pCurrElevState = getEvent(pCurrElevState))
    ;

  cout << endl;
}