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Diffstat (limited to 'engines/zvision/core/clock.cpp')
-rw-r--r-- | engines/zvision/core/clock.cpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/engines/zvision/core/clock.cpp b/engines/zvision/core/clock.cpp new file mode 100644 index 0000000000..1425d550b7 --- /dev/null +++ b/engines/zvision/core/clock.cpp @@ -0,0 +1,68 @@ +/* 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 "common/scummsys.h" + +#include "zvision/core/clock.h" + +#include "common/system.h" + +namespace ZVision { + +Clock::Clock(OSystem *system) + : _system(system), + _lastTime(0), + _deltaTime(0), + _pausedTime(0), + _paused(false) { +} + +void Clock::update() { + uint32 currentTime = _system->getMillis(); + + _deltaTime = (currentTime - _lastTime); + if (_paused) { + _deltaTime -= (currentTime - _pausedTime); + } + + if (_deltaTime < 0) { + _deltaTime = 0; + } + + _lastTime = currentTime; +} + +void Clock::start() { + if (_paused) { + _lastTime = _system->getMillis(); + _paused = false; + } +} + +void Clock::stop() { + if (!_paused) { + _pausedTime = _system->getMillis(); + _paused = true; + } +} + +} // End of namespace ZVision |