Claw
1.7.3
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00001 /* 00002 CLAW - a C++ Library Absolutely Wonderful 00003 00004 CLAW is a free library without any particular aim but being useful to 00005 anyone. 00006 00007 Copyright (C) 2005-2011 Julien Jorge 00008 00009 This library is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU Lesser General Public 00011 License as published by the Free Software Foundation; either 00012 version 2.1 of the License, or (at your option) any later version. 00013 00014 This library is distributed in the hope that it will be useful, 00015 but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public 00020 License along with this library; if not, write to the Free Software 00021 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00022 contact: julien.jorge@gamned.org 00023 */ 00029 #include <claw/tween/base_tweener.hpp> 00030 00031 #include <claw/assert.hpp> 00032 00033 /*----------------------------------------------------------------------------*/ 00037 claw::tween::base_tweener::~base_tweener() 00038 { 00039 00040 } // base_tweener::~base_tweener() 00041 00042 /*----------------------------------------------------------------------------*/ 00046 claw::tween::base_tweener* claw::tween::base_tweener::clone() const 00047 { 00048 return do_clone(); 00049 } // base_tweener::clone() 00050 00051 /*----------------------------------------------------------------------------*/ 00055 bool claw::tween::base_tweener::is_finished() const 00056 { 00057 return do_is_finished(); 00058 } // base_tweener::is_finished() 00059 00060 /*----------------------------------------------------------------------------*/ 00066 double claw::tween::base_tweener::update( double dt ) 00067 { 00068 CLAW_PRECOND( dt >= 0 ); 00069 00070 const double result = do_update(dt); 00071 00072 if ( is_finished() ) 00073 notify_finished(); 00074 00075 CLAW_POSTCOND( result <= dt ); 00076 CLAW_POSTCOND( result >= 0 ); 00077 00078 return result; 00079 } // base_tweener::update() 00080 00081 /*----------------------------------------------------------------------------*/ 00085 void claw::tween::base_tweener::on_finished( finish_callback f ) 00086 { 00087 m_on_finished.push_back(f); 00088 } // base_tweener::on_finished() 00089 00090 /*----------------------------------------------------------------------------*/ 00094 void claw::tween::base_tweener::notify_finished() const 00095 { 00096 // If one of the callbacks deletes the tweener, then m_on_finished will not be 00097 // available. Since we still want to execute all the callbacks, we iterate on 00098 // a copy of it. 00099 const std::list<finish_callback> callbacks(m_on_finished); 00100 00101 for ( std::list<finish_callback>::const_iterator it=callbacks.begin(); 00102 it!=callbacks.end(); ++it ) 00103 (*it)(); 00104 } // base_tweener::notify_finished()