FIFE  2008.0
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timer.cpp
1 /***************************************************************************
2  * Copyright (C) 2005-2008 by the FIFE team *
3  * http://www.fifengine.de *
4  * This file is part of FIFE. *
5  * *
6  * FIFE is free software; you can redistribute it and/or *
7  * modify it under the terms of the GNU Lesser General Public *
8  * License as published by the Free Software Foundation; either *
9  * version 2.1 of the License, or (at your option) any later version. *
10  * *
11  * This library is distributed in the hope that it will be useful, *
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
14  * Lesser General Public License for more details. *
15  * *
16  * You should have received a copy of the GNU Lesser General Public *
17  * License along with this library; if not, write to the *
18  * Free Software Foundation, Inc., *
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
20  ***************************************************************************/
21 
22 // Standard C++ library includes
23 
24 // 3rd party library includes
25 
26 // FIFE includes
27 // These includes are split up in two parts, separated by one empty line
28 // First block: files included from the FIFE root src directory
29 // Second block: files included from the same folder
30 #include "timemanager.h"
31 #include "timer.h"
32 
33 namespace FIFE {
34 
35  // Remember TimeEvent(-1) means that even an registered event won't be called
36  Timer::Timer()
37  : TimeEvent(-1),
38  m_active(false) {
39  }
40 
41  Timer::~Timer() {
42  stop();
43  }
44 
45  void Timer::start() {
46  if(m_active)
47  return;
48  setLastUpdateTime( TimeManager::instance()->getTime() );
49  TimeManager::instance()->registerEvent(this);
50  m_active = true;
51  }
52 
53  void Timer::stop() {
54  if(!m_active)
55  return;
56  TimeManager::instance()->unregisterEvent(this);
57  m_active = false;
58  }
59 
60  void Timer::setInterval(int32_t msec) {
61  setPeriod(msec);
62  stop();
63  }
64  void Timer::setCallback(const type_callback& cb) {
65  m_callback = cb;
66  }
67 
68  void Timer::updateEvent(uint32_t) {
69  if(!m_active)
70  return;
71 
72  if( m_callback ) {
73  m_callback();
74  }
75  }
76 }