#ifndef _simulation
#define _simulation

#include"event.h"
#include"skewHeap.h"

#include<assert.h>
#include<stdlib.h>


class simulation
{
 public:
    simulation();
    void run();
    unsigned int currentTime();
    void scheduleEvent(event*);
    int done;
 protected:
    skewHeap<event &>eventQueue;
    unsigned int time;
	
};

simulation::simulation():time(0)
{
}


unsigned int simulation::currentTime()
{
  return time;
}


void simulation::scheduleEvent(event*newEvent)
{
    assert(newEvent!=0);
    eventQueue.add(*newEvent);
}


void simulation::run()
{
    done=eventQueue.isEmpty();
    while(!done)
    {
        event& nextEvent=eventQueue.deleteMin();
        time=nextEvent.time;
        nextEvent.processEvent();
        delete& nextEvent;
        if(eventQueue.isEmpty()) done=1;
    }
}

#endif