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00001 // $Id: keep_alive.hxx,v 1.2 2002/11/20 18:08:16 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_KEEP_ALIVE_HXX 00021 #define HEADER_CONSTRUO_KEEP_ALIVE_HXX 00022 00023 #include "keep_alive_mgr.hxx" 00024 00028 class KeepAlive 00029 { 00030 private: 00031 public: 00032 KeepAlive () { 00033 KeepAliveMgr::register_obj(this); 00034 } 00035 00036 virtual ~KeepAlive () { 00037 KeepAliveMgr::unregister_obj(this); 00038 } 00039 00040 virtual void keep_alive () =0; 00041 }; 00042 00043 #endif 00044 00045 /* EOF */