You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
15 years ago
|
/** \file physics.cpp
|
||
|
|
* Snowballs trajectory computation
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Copyright, 2001 Nevrax Ltd.
|
||
|
|
*
|
||
|
|
* This file is part of NEVRAX SNOWBALLS.
|
||
|
|
* NEVRAX SNOWBALLS 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, or (at your option)
|
||
|
|
* any later version.
|
||
|
|
|
||
|
|
* NEVRAX SNOWBALLS 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 NEVRAX SNOWBALLS; see the file COPYING. If not, write to the
|
||
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
||
|
|
* MA 02111-1307, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
//
|
||
|
|
// Includes
|
||
|
|
//
|
||
|
|
|
||
|
|
#include <nel/misc/types_nl.h>
|
||
|
|
|
||
|
|
#include "physics.h"
|
||
|
|
|
||
|
|
//
|
||
|
|
// Namespaces
|
||
|
|
//
|
||
|
|
|
||
|
|
using namespace std;
|
||
|
|
using namespace NLMISC;
|
||
|
|
|
||
|
|
namespace SBCLIENT {
|
||
|
|
|
||
|
|
// -- -- this file exists twice
|
||
|
|
|
||
|
|
CVector CTrajectory::eval(NLMISC::TLocalTime t) const
|
||
|
|
{
|
||
|
|
if (t < _StartTime) return _StartPosition;
|
||
|
|
|
||
|
|
float ft = (float)(t-_StartTime)/(float)(_StopTime-_StartTime);
|
||
|
|
ft = min(ft, 1.0f);
|
||
|
|
CVector res = _EndPosition*ft + _StartPosition*(1.0f-ft);
|
||
|
|
res.z += 0.3f*_Distance*_Distance/90.0f*(float)sin(Pi*ft);
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
CVector CTrajectory::evalSpeed(NLMISC::TLocalTime t) const
|
||
|
|
{
|
||
|
|
if (t < _StartTime) return _StartPosition;
|
||
|
|
|
||
|
|
float ft = (float)(t-_StartTime)/(float)(_StopTime-_StartTime);
|
||
|
|
ft = min(ft, 1.0f);
|
||
|
|
CVector res = (_EndPosition-_StartPosition).normed()*_Speed;
|
||
|
|
res.z += 0.3f*_Distance*_Distance/90.0f*(float)Pi*(float)cos(Pi*ft);
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
} /* namespace SBCLIENT */
|
||
|
|
|
||
|
|
/* end of file */
|