Claw  1.7.0
tweener_sequence.cpp
Go to the documentation of this file.
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/tweener_sequence.hpp"
00030 
00031 /*----------------------------------------------------------------------------*/
00036 void claw::tween::tweener_sequence::insert( const tweener& t )
00037 {
00038   m_tweeners.push_back(t);
00039 } // tweener_sequence::insert()
00040 
00041 /*----------------------------------------------------------------------------*/
00045 void claw::tween::tweener_sequence::clear()
00046 {
00047   m_tweeners.clear();
00048 } // tweener_sequence::clear()
00049 
00050 /*----------------------------------------------------------------------------*/
00054 claw::tween::tweener_sequence* claw::tween::tweener_sequence::do_clone() const
00055 {
00056   return new tweener_sequence(*this);
00057 } // tweener_sequence::do_clone()
00058 
00059 /*----------------------------------------------------------------------------*/
00063 bool claw::tween::tweener_sequence::do_is_finished() const
00064 {
00065   return m_tweeners.empty();
00066 } // tweener_sequence::do_is_finished()
00067 
00068 /*----------------------------------------------------------------------------*/
00073 double claw::tween::tweener_sequence::do_update( double dt )
00074 {
00075   double result(dt);
00076 
00077   while ( (result != 0) && !m_tweeners.empty() )
00078     {
00079       result = m_tweeners.front().update(result);
00080 
00081       if ( m_tweeners.front().is_finished() )
00082         m_tweeners.pop_front();
00083     }
00084 
00085   return result;
00086 } // tweener_sequence::do_update()