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73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
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/** \file physics.h
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* Physics computation for particles (and thus snowballs)
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*
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* $Id: physics.h,v 1.1 2001-07-24 17:00:47 valignat Exp $
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*/
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/* Copyright, 2001 Nevrax Ltd.
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*
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* This file is part of NEVRAX SNOWBALLS.
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* NEVRAX SNOWBALLS is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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* NEVRAX SNOWBALLS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with NEVRAX SNOWBALLS; see the file COPYING. If not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA.
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*/
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#ifndef PHYSICS_H
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#define PHYSICS_H
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//
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// Includes
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//
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#include <nel/misc/vector.h>
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#include <nel/misc/time_nl.h>
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//
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// External classes
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//
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class CTrajectory
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{
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NLMISC::CVector _StartPosition;
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NLMISC::CVector _EndPosition;
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float _Speed;
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NLMISC::TTime _StartTime;
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NLMISC::TTime _StopTime;
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float _Distance;
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public:
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void init(const NLMISC::CVector &position, const NLMISC::CVector &target, float speed, NLMISC::TTime startTime)
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{
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_StartPosition = position;
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_EndPosition = target;
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_Speed = speed;
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_StartTime = startTime;
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_Distance = (_EndPosition-_StartPosition).norm();
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_StopTime = (NLMISC::TTime)(_Distance/_Speed*1000.0+_StartTime);
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}
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// void compute(const NLMISC::CVector &position, const NLMISC::CVector &target, float speed, NLMISC::TTime startTime);
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NLMISC::CVector eval(NLMISC::TTime t) const;
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NLMISC::CVector evalSpeed(NLMISC::TTime t) const;
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NLMISC::TTime getStartTime() const { return _StartTime; }
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NLMISC::CVector getStartPosition() const { return _StartPosition; }
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NLMISC::TTime getStopTime() const { return _StopTime; }
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};
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#endif // PHYSICS_H
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/* End of physics.h */
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