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source: code/trunk/src/libraries/util/Clock.cc @ 6417

Last change on this file since 6417 was 6417, checked in by rgrieder, 14 years ago

Merged presentation2 branch back to trunk.
Major new features:

  • Actual GUI with settings, etc.
  • Improved space ship steering (human interaction)
  • Rocket fire and more particle effects
  • Advanced sound framework
  • Property svn:eol-style set to native
File size: 2.0 KB
Line 
1/*
2 *   ORXONOX - the hottest 3D action shooter ever to exist
3 *                    > www.orxonox.net <
4 *
5 *
6 *   License notice:
7 *
8 *   This program is free software; you can redistribute it and/or
9 *   modify it under the terms of the GNU General Public License
10 *   as published by the Free Software Foundation; either version 2
11 *   of the License, or (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 *
22 *   Author:
23 *      Reto Grieder
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29#include "Clock.h"
30#include <OgreTimer.h>
31
32namespace orxonox
33{
34    Clock::Clock()
35        : timer_(new Ogre::Timer())
36        , tickTime_(0)
37        , tickDt_(0)
38        , tickDtFloat_(0.0f)
39    {
40    }
41
42    Clock::~Clock()
43    {
44        delete timer_;
45    }
46
47    /**
48    @remarks
49        Mind the types! Ogre::Timer::getMicroseconds() will return an unsigned
50        long, which will eventually overflow. But if you use the subtraction of
51        the current time minus the last time the timer gave us and sum these up to
52        a 64 bit integer, we get the desired result.
53        Also mind that we don't have to store the last timer's time as unsigned long
54        as well because (unsigned long)tickTime_ will do exactly that.
55    */
56    void Clock::capture()
57    {
58        tickDt_ = timer_->getMicroseconds() - (unsigned long)tickTime_;
59        tickTime_ += tickDt_;
60        tickDtFloat_ = static_cast<float>(tickDt_) / 1000000.0f;
61    }
62
63    unsigned long long Clock::getRealMicroseconds() const
64    {
65        return tickTime_ + (timer_->getMicroseconds() - (unsigned long)tickTime_);
66    }
67}
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