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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "common/system.h"
#include "tetraedge/te/te_real_timer.h"
namespace Tetraedge {
TeRealTimer::TeRealTimer() : _startTime(0), _paused(false), _maxTimeSeen(0), _startTime2(0) {
pause();
_pausedTime = 0;
}
static unsigned long getUsecs() {
return (unsigned long)g_system->getMillis() * 1000;
}
unsigned long TeRealTimer::getTimeFromStart() {
unsigned long timeNow;
if (_paused)
timeNow = _pausedTime;
else
timeNow = getUsecs();
return timeNow - _startTime;
}
void TeRealTimer::pause() {
if (!_paused) {
unsigned long timeNow = getUsecs();
if (timeNow < _maxTimeSeen)
timeNow = _maxTimeSeen;
_maxTimeSeen = timeNow;
_pausedTime = timeNow;
_paused = true;
}
}
void TeRealTimer::start() {
if (_paused) {
unsigned long timeNow = getUsecs();
if (timeNow < _maxTimeSeen)
timeNow = _maxTimeSeen;
timeNow += (_startTime - _pausedTime);
_maxTimeSeen = timeNow;
_startTime = timeNow;
_startTime2 = timeNow;
_paused = false;
}
}
void TeRealTimer::stop() {
pause();
_startTime = 0;
_startTime2 = 0;
_pausedTime = 0;
}
unsigned long TeRealTimer::systemTime() {
return getUsecs();
}
unsigned long TeRealTimer::monotonicSystemTime() {
unsigned long timeNow = getUsecs();
if (_maxTimeSeen < timeNow)
_maxTimeSeen = timeNow;
return _maxTimeSeen;
}
unsigned long TeRealTimer::time_() {
return systemTime();
}
/* Time elapsed from the start */
unsigned long TeRealTimer::timeElapsed() {
unsigned long timeNow = getUsecs();
if (_maxTimeSeen < timeNow)
_maxTimeSeen = timeNow;
_startTime2 = _maxTimeSeen;
unsigned long elapsed = _maxTimeSeen - _startTime;
return elapsed;
}
unsigned long TeRealTimer::timeFromLastTimeElapsed() {
unsigned long timeNow = getUsecs();
if (_maxTimeSeen < timeNow)
_maxTimeSeen = timeNow;
unsigned long elapsed = _maxTimeSeen - _startTime2;
return elapsed;
}
} // end namespace Tetraedge
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