tweener_group.cpp

/*
  CLAW - a C++ Library Absolutely Wonderful
 
  CLAW is a free library without any particular aim but being useful to
  anyone.
 
  Copyright (C) 2005-2011 Julien Jorge
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  contact: julien.jorge@stuff-o-matic.com
*/
#include "claw/tween/tweener_group.hpp"

void claw::tween::tweener_group::insert(const tweener& t)
{
  m_tweeners.push_back(t);
}

void claw::tween::tweener_group::clear()
{
  m_tweeners.clear();
}

claw::tween::tweener_group* claw::tween::tweener_group::do_clone() const
{
  return new tweener_group(*this);
}

bool claw::tween::tweener_group::do_is_finished() const
{
  return m_tweeners.empty();
}

double claw::tween::tweener_group::do_update(double dt)
{
  typedef std::vector<tweener>::iterator iterator_type;
  double result(dt);
 
  iterator_type it = m_tweeners.begin();
 
  while(it != m_tweeners.end())
    {
      const double r = it->update(dt);
      result = std::min(result, r);
 
      if(it->is_finished())
        it = m_tweeners.erase(it);
      else
        ++it;
    }
 
  return result;
}

bool claw::tween::tweener_group::empty() const
{
  return m_tweeners.empty();
}