#include "Timer.h"
#include <time.h>

Timer::Timer() :
  running_( false )
{
  reset();
}

void Timer::start()
{
  if ( ! running_ )
  {
    long delta = stopTime_ - startTime_;
    startTime_ = timeNow() - delta;
    running_ = true;
  }
}

void Timer::stop()
{
  stopTime_ = timeNow();
  running_ = false;
}

long Timer::lap() const
{
  if ( running_ )
    return timeNow() - startTime_;
  else
    return stopTime_ - startTime_;
}

void Timer::reset()
{
  stopTime_ = startTime_ = timeNow();
}

long Timer::timeNow() const
{
  return long ( time ( 0 ) );
}