Claw  1.7.3
base_tweener.hpp
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1 /*
2  CLAW - a C++ Library Absolutely Wonderful
3 
4  CLAW is a free library without any particular aim but being useful to
5  anyone.
6 
7  Copyright (C) 2005-2011 Julien Jorge
8 
9  This library is free software; you can redistribute it and/or
10  modify it under the terms of the GNU Lesser General Public
11  License as published by the Free Software Foundation; either
12  version 2.1 of the License, or (at your option) any later version.
13 
14  This library is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  Lesser General Public License for more details.
18 
19  You should have received a copy of the GNU Lesser General Public
20  License along with this library; if not, write to the Free Software
21  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22  contact: julien.jorge@gamned.org
23 */
29 #ifndef __CLAW_TWEEN_BASE_TWEENER_HPP__
30 #define __CLAW_TWEEN_BASE_TWEENER_HPP__
31 
32 #include <list>
33 #include <boost/function.hpp>
34 
35 namespace claw
36 {
37  namespace tween
38  {
45  {
46  public:
51  typedef boost::function<void ()> finish_callback;
52 
53  public:
54  virtual ~base_tweener();
55 
56  base_tweener* clone() const;
57 
58  bool is_finished() const;
59  double update( double dt );
60 
61  void on_finished( finish_callback f );
62 
63  private:
64  void notify_finished() const;
65 
69  virtual base_tweener* do_clone() const = 0;
70 
74  virtual bool do_is_finished() const = 0;
75 
81  virtual double do_update( double dt ) = 0;
82 
83  private:
85  std::list<finish_callback> m_on_finished;
86 
87  }; // class base_tweener
88 
89  } // namespace tween
90 } // namespace claw
91 
92 #endif // __CLAW_TWEEN_BASE_TWEENER_HPP__