00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://ogre.sourceforge.net/ 00006 00007 Copyright © 2000-2002 The OGRE Team 00008 Also see acknowledgements in Readme.html 00009 00010 This program is free software; you can redistribute it and/or modify it under 00011 the terms of the GNU Lesser General Public License as published by the Free Software 00012 Foundation; either version 2 of the License, or (at your option) any later 00013 version. 00014 00015 This program is distributed in the hope that it will be useful, but WITHOUT 00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public License along with 00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple 00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to 00022 http://www.gnu.org/copyleft/lesser.txt. 00023 ----------------------------------------------------------------------------- 00024 */ 00025 #ifndef __FrameListener_H__ 00026 #define __FrameListener_H__ 00027 00028 00029 #include "OgrePrerequisites.h" 00030 00031 namespace Ogre { 00032 00035 struct FrameEvent 00036 { 00041 Real timeSinceLastEvent; 00045 Real timeSinceLastFrame; 00046 }; 00047 00048 00067 class _OgreExport FrameListener 00068 { 00069 /* 00070 Note that this could have been an abstract class, but I made 00071 the explicit choice not to do this, because I wanted to give 00072 people the option of only implementing the methods they wanted, 00073 rather than having to create 'do nothing' implementations for 00074 those they weren't interested in. As such this class follows 00075 the 'Adapter' classes in Java rather than pure interfaces. 00076 */ 00077 public: 00083 virtual bool frameStarted(const FrameEvent& evt) { return true; } 00089 virtual bool frameEnded(const FrameEvent& evt) { return true; } 00090 00091 virtual ~FrameListener() {} 00092 00093 }; 00094 } 00095 00096 #endif
Copyright © 2002 by The OGRE Team