src/engine/eTimer.h

Go to the documentation of this file.

/*

*************************************************************************

ArmageTron -- Just another Tron Lightcycle Game in 3D.
Copyright (C) 2000  Manuel Moos (manuel@moosnet.de)

**************************************************************************

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; either version 2
of the License, or (at your option) any later version.

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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  
***************************************************************************

*/

#ifndef ArmageTron_TIMER_H
#define ArmageTron_TIMER_H

//#include <time>
#include "tSysTime.h"
#include "nNetObject.h"

class eTimer:public nNetObject{
public:
    REAL speed; // the time acceleration

    eTimer();
    eTimer(nMessage &m);
    virtual ~eTimer();
    virtual void WriteSync(nMessage &m);
    virtual void ReadSync(nMessage &m);
    virtual nDescriptor &CreatorDescriptor() const;

    REAL Time();
    REAL TimeNoSync(){return REAL(Time()+(tSysTimeFloat()-lastTime_)*speed);}

    void pause(bool p);

    void SyncTime();
    void Reset(REAL t=0);

    REAL AverageFPS(){return 1/(averageSpf_.GetAverage()+EPS);}
    REAL AverageFrameTime(){return averageSpf_.GetAverage();}
    REAL FrameTime(){return spf_;}

    bool IsSynced() const; 

private:
    mutable double creationSystemTime_; 
    double smoothedSystemTime_;         
    double startTime_;                  
    nAverager startTimeOffset_;         
    REAL startTimeSmoothedOffset_;      
    nAverager qualityTester_;           

    // the current game time is always smoothedSystemTime_ - ( startTime_ + startTimeSmoothedOffset_ ).

    REAL spf_;               
    nAverager averageSpf_;   

    double lastTime_;        
    double nextSync_;        
};

REAL se_GameTime();
REAL se_GameTimeNoSync();
void se_SyncGameTimer();

void se_ResetGameTimer(REAL t=0);
void se_MakeGameTimer();
void se_KillGameTimer();
void se_PauseGameTimer(bool p);

REAL se_PredictTime();
REAL se_AverageFrameTime();
REAL se_AverageFPS();

extern eTimer *se_mainGameTimer;
#endif

---