snowballs2/client/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/types_nl.h>
  25
  26 #include <nel/misc/vector.h>
  27 #include <nel/misc/time_nl.h>
  28
  29 namespace SBCLIENT {
  30
  31 //
  32 // External classes
  33 //
  34
  35 class CTrajectory
  36 {
  37         NLMISC::CVector         _StartPosition;
  38         NLMISC::CVector         _EndPosition;
  39         float                           _Speed;
  40         NLMISC::TLocalTime              _StartTime;
  41         NLMISC::TLocalTime              _StopTime;
  42         float                           _Distance;
  43
  44 public:
  45         void                            init(const NLMISC::CVector &position, const NLMISC::CVector &target, float speed, NLMISC::TLocalTime startTime)
  46         {
  47                 _StartPosition = position;
  48                 _EndPosition = target;
  49                 _Speed = speed;
  50                 _StartTime = startTime;
  51                 _Distance = (_EndPosition-_StartPosition).norm();
  52                 _StopTime = (NLMISC::TLocalTime)(_Distance / _Speed + _StartTime);
  53         }
  54
  55 //      void                            compute(const NLMISC::CVector &position, const NLMISC::CVector &target, float speed, NLMISC::TTime startTime);
  56
  57         NLMISC::CVector         eval(NLMISC::TLocalTime t) const;
  58         NLMISC::CVector         evalSpeed(NLMISC::TLocalTime t) const;
  59
  60         NLMISC::TLocalTime      getStartTime() const { return _StartTime; }
  61         NLMISC::CVector         getStartPosition() const { return _StartPosition; }
  62         NLMISC::TLocalTime      getStopTime() const { return _StopTime; }
  63 };
  64
  65 } /* namespace SBCLIENT */
  66
  67 #endif // PHYSICS_H
  68
  69 /* End of physics.h */