Search  

---

C:/temp/src/j2k/QNX4/Group5/Resource.cpp

Go to the documentation of this file.

#include "resource.h"

Resource::Resource(){
  numOfOwners = 0;
  numOfWaiters = 0;
  for(int x=0;x<2;x++){
  waitingTrains[x] = NULL;
  }
}

Resource::~Resource(){
}

BOOL Resource::setOwner(Train* train){
  BOOL returning = FALSE;
  if(numOfOwners == 0){
    numOfOwners++;
    ownerTrains[0] = train;
    returning =  TRUE;
    ownersDirection = train->getDirection();
  } 
  return returning;
}

BOOL Resource::moveToOwner(){
  BOOL returning = FALSE;
  int count = numOfWaiters;
  for(int x=0;x<numOfWaiters;x++){
    if(waitingTrains[x]){
      if(x == 0){
   if(setOwner(waitingTrains[0])){
     waitingTrains[0]->stopWaiting();    
     removeFromWaiting(waitingTrains[0]);
   }
   }
      else if(x == 2)
   waitingTrains[0] = waitingTrains[1];  
      waitingTrains[x] = NULL;
      count--;
    }    
    returning = TRUE;
  }
  numOfWaiters = count;
  return returning;
}


BOOL Resource::removeOwner(Train* train){
  BOOL returning = FALSE;
  int count = numOfOwners;
  for(int x=0;x<numOfOwners;x++){
    if(ownerTrains[x] == train){
      if(x == 2)
   ownerTrains[0] = waitingTrains[1];  
      ownerTrains[x] = NULL;
      count--;
      returning = TRUE;
    }    
  }
  numOfOwners = count;
  return returning;
}

int Resource::numberOfOwners(){
  return numOfOwners;
}

BOOL Resource::addToWaiting(Train* train){
  BOOL returning = FALSE;
  if(numOfWaiters >= 2) {
    returning = FALSE;
  } else{
    waitingTrains[numOfWaiters] = train;
    numOfWaiters++;
    returning = TRUE;    
  }
  return returning;  
}

BOOL Resource::removeFromWaiting(Train* train){
  BOOL returning = FALSE;
  int count = numOfWaiters;
  for(int x=0;x<numOfWaiters;x++){
     if(waitingTrains[x] == train){
      if(x == 2)
   waitingTrains[0] = waitingTrains[1];  
      waitingTrains[x] = NULL;
      count--;
      returning = TRUE;
    }    
   }
  numOfWaiters = count;
  return returning;
}

int Resource::numberOfWaiters(){
  return numOfWaiters;
}

BOOL Resource::isActive(){
  return resourceActive;
}

void Resource::activate(BOOL resourceActive){
  this->resourceActive = resourceActive;
}

---