delta_manager.hxx

   1 //  $Id: delta_manager.hxx,v 1.1 2002/11/20 00:46:11 grumbel Exp $
   2 //
   3 //  Construo - A wire-frame construction game
   4 //  Copyright (C) 2002 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #ifndef HEADER_CONSTRUO_DELTAMANAGER_HXX
  21 #define HEADER_CONSTRUO_DELTAMANAGER_HXX
  22
  23 #include "construo.hxx"
  24 #include "system_context.hxx"
  25
  26 class DeltaManager
  27 {
  28 private:
  29   unsigned int last_time;
  30 public:
  31   DeltaManager ()
  32     : last_time (system_context->get_time ())
  33   {}
  34
  35   float getset ()
  36   {
  37     float ret = get ();
  38     set ();
  39     return ret;
  40   }
  41
  42   void set ()
  43   {
  44     last_time = system_context->get_time ();
  45   }
  46
  47   float get ()
  48   {
  49     return ( system_context->get_time () - last_time) / 1000.0f;
  50   }
  51 };
  52
  53 #endif
  54
  55 /* EOF */