snowballs2/server/position/src/physics.h

   1 // NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
   2 // Copyright (C) 2010  Winch Gate Property Limited
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU Affero General Public License as
   6 // published by the Free Software Foundation, either version 3 of the
   7 // License, or (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU Affero General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU Affero General Public License
  15 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 #ifndef PHYSICS_H
  18 #define PHYSICS_H
  19
  20 //
  21 // Includes
  22 //
  23
  24 #include <nel/misc/vector.h>
  25 #include <nel/misc/time_nl.h>
  26
  27 //
  28 // External classes
  29 //
  30
  31 class CTrajectory
  32 {
  33         NLMISC::CVector         _StartPosition;
  34         NLMISC::CVector         _EndPosition;
  35         float                           _Speed;
  36         NLMISC::TTime           _StartTime;
  37         NLMISC::TTime           _StopTime;
  38         float                           _Distance;
  39
  40 public:
  41         void                            init(const NLMISC::CVector &position, const NLMISC::CVector &target, float speed, NLMISC::TTime startTime)
  42         {
  43                 _StartPosition = position;
  44                 _EndPosition = target;
  45                 _Speed = speed;
  46                 _StartTime = startTime;
  47                 _Distance = (_EndPosition-_StartPosition).norm();
  48                 _StopTime = (NLMISC::TTime)(_Distance/_Speed*1000.0+_StartTime);
  49         }
  50
  51 //      void                            compute(const NLMISC::CVector &position, const NLMISC::CVector &target, float speed, NLMISC::TTime startTime);
  52
  53         NLMISC::CVector         eval(NLMISC::TTime t) const;
  54         NLMISC::CVector         evalSpeed(NLMISC::TTime t) const;
  55
  56         NLMISC::TTime           getStartTime() const { return _StartTime; }
  57         NLMISC::CVector         getStartPosition() const { return _StartPosition; }
  58         NLMISC::TTime           getStopTime() const { return _StopTime; }
  59 };
  60
  61 #endif // PHYSICS_H
  62
  63 /* End of physics.h */