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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "illusions/time.h"
#include "common/system.h"
namespace Illusions {
uint32 getCurrentTime() {
return g_system->getMillis() / 16;
}
bool isTimerExpired(uint32 startTime, uint32 endTime) {
uint32 currTime = getCurrentTime();
return !(
(startTime > endTime && (currTime <= endTime || currTime >= startTime)) ||
(startTime < endTime && currTime <= endTime && currTime >= startTime));
}
uint32 getDurationElapsed(uint32 startTime, uint32 endTime) {
uint32 currTime = getCurrentTime();
uint32 elapsed = endTime - startTime;
if (isTimerExpired(startTime, endTime))
return elapsed;
else if (startTime < endTime || currTime > startTime)
return currTime - startTime;
else
return currTime + elapsed - endTime;
}
} // End of namespace Illusions
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