// ferry.cpp
// ----------------------------------------------------------------------
//
// CSE 143
// Homework 4
// http://www.cs.washington.edu/education/courses/143/00su/homework/
// 21 Jul 2000, Ken Yasuhara


#include <assert.h>
#include "ferry.h"


Ferry::Ferry(const int newArrivalTime, const int newTimeBetweenArrivals,
             const int newCarCapacity, const int newPersonCapacity)
{
  assert(newArrivalTime > 0);
  assert(newTimeBetweenArrivals > 0);
  assert(newCarCapacity > 0 && newPersonCapacity > 0);

  arrivalTime = newArrivalTime;
  timeBetweenArrivals = newTimeBetweenArrivals;
  carCapacity = newCarCapacity;
  personCapacity = newPersonCapacity;
  carCount = 0;
  personCount = 0;
}


bool
Ferry::canFit(const Car *car) const
{
  // This car and the people inside must fit.
  return (getRemainingCarCapacity() >= 1 && 
          getRemainingPersonCapacity() >= car->getPassengerCount() + 1);
  // (recall:  Car::getPassengerCount() doesn't include driver.)
}


bool
Ferry::board(const Car *car) 
{
  if (!canFit(car)) {
    return false;
  }

  carCount++;
  personCount += car->getPassengerCount() + 1;
  return true;
}