SFML/src/SFML/System/Clock.cpp at master · githubhy/SFML · GitHub

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////////////////////////////////////////////////////////////

// SFML - Simple and Fast Multimedia Library

// This software is provided 'as-is', without any express or implied warranty.

// In no event will the authors be held liable for any damages arising from the use of this software.

// Permission is granted to anyone to use this software for any purpose,

// including commercial applications, and to alter it and redistribute it freely,

// subject to the following restrictions:

// 1. The origin of this software must not be misrepresented;

// you must not claim that you wrote the original software.

// If you use this software in a product, an acknowledgment

// in the product documentation would be appreciated but is not required.

// 2. Altered source versions must be plainly marked as such,

// and must not be misrepresented as being the original software.

// 3. This notice may not be removed or altered from any source distribution.

////////////////////////////////////////////////////////////

// Headers

////////////////////////////////////////////////////////////

#include <SFML/System/Clock.hpp>

#include <SFML/System/Time.hpp>

namespace sf

{

////////////////////////////////////////////////////////////

Time Clock::getElapsedTime() const

{

if (isRunning())

return std::chrono::duration_cast<std::chrono::microseconds>(priv::ClockImpl::now() - m_refPoint);

return std::chrono::duration_cast<std::chrono::microseconds>(m_stopPoint - m_refPoint);

}

////////////////////////////////////////////////////////////

bool Clock::isRunning() const

{

return m_stopPoint == priv::ClockImpl::time_point();

}

////////////////////////////////////////////////////////////

void Clock::start()

{

if (!isRunning())

{

m_refPoint += priv::ClockImpl::now() - m_stopPoint;

m_stopPoint = {};

}

////////////////////////////////////////////////////////////

void Clock::stop()

{

if (isRunning())

m_stopPoint = priv::ClockImpl::now();

}

////////////////////////////////////////////////////////////

Time Clock::restart()

{

const Time elapsed = getElapsedTime();

m_refPoint = priv::ClockImpl::now();

m_stopPoint = {};

return elapsed;

}

////////////////////////////////////////////////////////////

Time Clock::reset()

{

const Time elapsed = getElapsedTime();

m_refPoint = priv::ClockImpl::now();

m_stopPoint = m_refPoint;

return elapsed;

}

} // namespace sf

SFML/src/SFML/System/Clock.cpp at master · githubhy/SFML · GitHub

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