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/***************************************************************************
* Copyright (C) 2005-2019 by the FIFE team *
* http://www.fifengine.net *
* This file is part of FIFE. *
* *
* FIFE is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or (at your option) any later version. *
* *
* This library 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
// Standard C++ library includes
// 3rd party library includes
// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "util/base/exception.h"
#include "util/time/timemanager.h"
#include "timeprovider.h"
namespace FIFE {
TimeProvider::TimeProvider(TimeProvider* master):
m_master(master),
m_multiplier(1.0) {
m_time_static = m_time_scaled = master ? master->getGameTime() : TimeManager::instance()->getTime();
}
TimeProvider::~TimeProvider() {}
void TimeProvider::setMultiplier(float multiplier) {
if (multiplier < 0.0) {
throw NotSupported("Negative time multiplier are not supported");
}
m_time_static = getPreciseGameTime();
m_time_scaled = m_master ? m_master->getPreciseGameTime() : static_cast<float>(TimeManager::instance()->getTime());
m_multiplier = multiplier;
}
float TimeProvider::getMultiplier() const {
return m_multiplier;
}
float TimeProvider::getTotalMultiplier() const {
if (m_master) {
return m_master->getTotalMultiplier() * m_multiplier;
} else {
return m_multiplier;
}
}
uint32_t TimeProvider::getGameTime() const {
return static_cast<uint32_t>(getPreciseGameTime());
}
double TimeProvider::getPreciseGameTime() const {
return m_time_static + m_multiplier * ((m_master ? m_master->getPreciseGameTime() : static_cast<float>(TimeManager::instance()->getTime())) - m_time_scaled);
}
uint32_t scaleTime(float multiplier, uint32_t ticks) {
return static_cast<uint32_t>(static_cast<float>(ticks) * multiplier);
}
}
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