frametimer.h

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/********************************************************************************/
/*                                                                              */
/*  Netrinjo-Engine - a library for game-development                            */
/*  Copyright (C) 2005 by Tobias Nadler                                         */
/*                                                                              */
/*  This library is free software; you can redistribute it and/or               */
/*  modify it under the terms of the GNU Lesser General Public                  */
/*  License as published by the Free Software Foundation; either                */
/*  version 2.1 of the License, or (at your option) any later version.          */
/*                                                                              */
/*  This library 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           */
/*  Lesser General Public License for more details.                             */
/*                                                                              */
/*  You should have received a copy of the GNU Lesser General Public            */
/*  License along with this library; if not, write to the Free Software         */
/*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA   */
/*                                                                              */
/********************************************************************************/

#ifndef TIMER_H
#define TIMER_H

#include <list>
#include "SDL/SDL.h"
#include "basicobject.h"

using namespace std;

class DECLSPEC FrameTimer
{
public:
    typedef BasicObject::Callback Callback;
    struct CbInfo
    {
        void init( Callback c, BasicObject * d, Uint32 iv, Uint32 n )
        {
            cb = c;
            pData = d;
            tInterval = iv;
            tNext = n;
        }
        Callback cb;
        BasicObject * pData;
        Uint32 tInterval; // read-only!
        Uint32 tNext; // read-only!
//      friend class FrameTimer;
    };
    DECLSPEC FrameTimer();
    virtual DECLSPEC ~FrameTimer();
    DECLSPEC bool setInterval( CbInfo * id, Uint32 iv );
    DECLSPEC CbInfo * addCallback( Callback c, BasicObject * d, Uint32 iv );
    DECLSPEC void removeCallback( CbInfo * pCb );

    static FrameTimer * the;
    DECLSPEC static FrameTimer *getThe();
private:
    typedef list<CbInfo*>::iterator CbInfoIter;
    list<CbInfo*> cbs, cbsInactive;
    void doTimer();

    friend class UiManager;
};

#endif

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