/*
 * eventmanager.h
 *
 * Copyright (C) 2001 Atomic Blue (info@planeshift.it, http://www.atomicblue.org) 
 *
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation (version 2 of the License)
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef __EVENTMANAGER_H__
#define __EVENTMANAGER_H__

#include <csutil/thread.h>

#include "util/gameevent.h"
#include "util/heap.h"
#include "net/msghandler.h"

/**
 * This class handles all queueing and invoking of timed events, such as
 * combat, spells, NPC dialog responses, range weapons, or NPC respawning.
 * It maintains a queue ordered by trigger time and is polled by the engine
 * periodically to clear any queued events with trigger times less than the
 * current ticks time.
 */
class EventManager : public MsgHandler, public Singleton<EventManager>
{
protected:
    csRef<csMutex>  mutex;
    Heap<psGameEvent> eventqueue;
    csRef<csMutex>  runmutex;
    int runstate;

    /** thread main loop */
    virtual void Run ();
    
public:
    EventManager();
    virtual ~EventManager();

    /// Add new event to scheduler queue.
    void Push(psGameEvent *event);

    /// Check Event Queue for scheduled events which are due
    void ProcessEventQueue();

};

#endif