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delta_manager.hxx

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00001 //  $Id: delta_manager.hxx,v 1.1 2002/11/20 00:46:11 grumbel Exp $
00002 // 
00003 //  Construo - A wire-frame construction game
00004 //  Copyright (C) 2002 Ingo Ruhnke <grumbel@gmx.de>
00005 //
00006 //  This program is free software; you can redistribute it and/or
00007 //  modify it under the terms of the GNU General Public License
00008 //  as published by the Free Software Foundation; either version 2
00009 //  of the License, or (at your option) any later version.
00010 //
00011 //  This program is distributed in the hope that it will be useful,
00012 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 //  GNU General Public License for more details.
00015 // 
00016 //  You should have received a copy of the GNU General Public License
00017 //  along with this program; if not, write to the Free Software
00018 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00019 
00020 #ifndef HEADER_CONSTRUO_DELTAMANAGER_HXX
00021 #define HEADER_CONSTRUO_DELTAMANAGER_HXX
00022 
00023 #include "construo.hxx"
00024 #include "system_context.hxx"
00025 
00026 class DeltaManager
00027 {
00028 private:
00029   unsigned int last_time;
00030 public:
00031   DeltaManager ()
00032     : last_time (system_context->get_time ())
00033   {}
00034 
00035   float getset ()
00036   {
00037     float ret = get ();
00038     set ();
00039     return ret;
00040   }
00041   
00042   void set () 
00043   {
00044     last_time = system_context->get_time ();
00045   }
00046   
00047   float get () 
00048   {
00049     return ( system_context->get_time () - last_time) / 1000.0f;
00050   }
00051 };
00052 
00053 #endif
00054 
00055 /* EOF */

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