105 lines
2.5 KiB
C++
105 lines
2.5 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 Config.hpp
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#include <Nazara/Core/ApplicationBase.hpp>
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#include <Nazara/Core/Error.hpp>
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#ifdef NAZARA_PLATFORM_WEB
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#include <emscripten/html5.h>
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#endif
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#include <Nazara/Core/Debug.hpp>
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namespace Nz
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{
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ApplicationBase::ApplicationBase(int argc, const Pointer<const char>* argv) :
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m_running(true),
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m_commandLineParams(CommandLineParameters::Parse(argc, argv)),
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m_currentTime(Time::Zero())
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{
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NazaraAssert(s_instance == nullptr, "only one instance of ApplicationBase can exist at a given time");
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s_instance = this;
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}
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ApplicationBase::~ApplicationBase()
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{
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assert(s_instance == this);
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s_instance = nullptr;
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}
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int ApplicationBase::Run()
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{
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// Ignore time between creation and Run() call
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m_clock.Restart();
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#ifndef NAZARA_PLATFORM_WEB
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while (m_running)
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{
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Time elapsedTime = m_clock.Restart();
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Update(elapsedTime);
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}
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#else
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emscripten_set_main_loop_arg([](void* application)
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{
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ApplicationBase* app = static_cast<ApplicationBase*>(application);
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if (!app->m_running)
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{
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emscripten_cancel_main_loop();
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return;
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}
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try
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{
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Time elapsedTime = app->m_clock.Restart();
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app->Update(elapsedTime);
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}
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catch (const std::exception& e)
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{
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NazaraError(e.what());
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}
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}, this, 0, 1);
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emscripten_set_main_loop_timing(EM_TIMING_RAF, 1);
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#endif
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return 0;
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}
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bool ApplicationBase::Update(Time elapsedTime)
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{
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m_currentTime += elapsedTime;
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for (auto& updaterEntry : m_updaters)
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{
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if (updaterEntry.nextUpdate > m_currentTime)
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continue;
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Time timeSinceLastUpdate = m_currentTime - updaterEntry.lastUpdate;
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if NAZARA_UNLIKELY(updaterEntry.lastUpdate < Time::Zero())
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{
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// First call
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timeSinceLastUpdate = Time::Zero();
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updaterEntry.lastUpdate = m_currentTime;
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}
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Time interval = updaterEntry.updater->Update(timeSinceLastUpdate);
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if (interval >= Time::Zero())
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updaterEntry.nextUpdate = m_currentTime + interval;
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else
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updaterEntry.nextUpdate = updaterEntry.lastUpdate + (-interval);
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updaterEntry.lastUpdate = m_currentTime;
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updaterEntry.nextUpdate = std::max(updaterEntry.nextUpdate, m_currentTime);
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}
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for (auto& componentPtr : m_components)
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{
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if (componentPtr)
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componentPtr->Update(elapsedTime);
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}
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return m_running;
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}
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ApplicationBase* ApplicationBase::s_instance = nullptr;
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}
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