71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
// Copyright (C) 2024 Jérôme "SirLynix" Leclercq (lynix680@gmail.com)
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Export.hpp
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namespace Nz
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{
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template<typename F>
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ApplicationUpdaterFunctor<F>::ApplicationUpdaterFunctor(F functor) :
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m_functor(std::move(functor))
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{
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}
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template<typename F>
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Time ApplicationUpdaterFunctor<F>::Update(Time elapsedTime)
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{
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if constexpr (std::is_invocable_v<F, Time>)
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return TriggerFunctor(elapsedTime);
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else if constexpr (std::is_invocable_v<F>)
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return TriggerFunctor();
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else
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static_assert(AlwaysFalse<F>(), "updater functor must be callable with a Time or nothing");
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}
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template<typename F>
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template<typename... Args>
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Time ApplicationUpdaterFunctor<F>::TriggerFunctor(Args&&... args)
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{
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if constexpr (std::is_same_v<std::invoke_result_t<F, Args...>, Time>)
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return m_functor(std::forward<Args>(args)...);
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else if constexpr (std::is_same_v<std::invoke_result_t<F, Args...>, void>)
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{
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m_functor(std::forward<Args>(args)...);
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return Time::Zero();
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}
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else
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static_assert(AlwaysFalse<F>(), "updater functor must either return Time or void");
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}
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template<typename F, bool FixedInterval>
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ApplicationUpdaterFunctorWithInterval<F, FixedInterval>::ApplicationUpdaterFunctorWithInterval(F functor, Time interval) :
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m_interval(interval),
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m_functor(std::move(functor))
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{
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}
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template<typename F, bool FixedInterval>
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Time ApplicationUpdaterFunctorWithInterval<F, FixedInterval>::Update(Time elapsedTime)
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{
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if constexpr (std::is_invocable_v<F, Time>)
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{
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if constexpr (FixedInterval)
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m_functor(m_interval);
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else
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m_functor(elapsedTime);
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}
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else
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{
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static_assert(std::is_invocable_v<F>, "updater functor must be callable with a Time or nothing");
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m_functor();
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}
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if constexpr (FixedInterval)
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return -m_interval;
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else
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return m_interval;
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}
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}
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