Core: Add Lifetime component and system

include/Nazara/Core/Components.hpp

@@ -0,0 +1,34 @@
+// this file was automatically generated and should not be edited
+
+/*
+	Nazara Engine - Core module
+
+	Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy of
+	this software and associated documentation files (the "Software"), to deal in
+	the Software without restriction, including without limitation the rights to
+	use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+	of the Software, and to permit persons to whom the Software is furnished to do
+	so, subject to the following conditions:
+
+	The above copyright notice and this permission notice shall be included in all
+	copies or substantial portions of the Software.
+
+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+	SOFTWARE.
+*/
+
+#pragma once
+
+#ifndef NAZARA_CORE_COMPONENTS_HPP
+#define NAZARA_CORE_COMPONENTS_HPP
+
+#include <Nazara/Core/Components/LifetimeComponent.hpp>
+
+#endif // NAZARA_CORE_COMPONENTS_HPP

include/Nazara/Core/Components/LifetimeComponent.hpp

@@ -0,0 +1,39 @@
+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_CORE_COMPONENTS_LIFETIMECOMPONENT_HPP
+#define NAZARA_CORE_COMPONENTS_LIFETIMECOMPONENT_HPP
+
+#include <Nazara/Prerequisites.hpp>
+#include <Nazara/Utility/Config.hpp>
+
+namespace Nz
+{
+	class LifetimeComponent
+	{
+		public:
+			inline LifetimeComponent(float lifetime);
+			LifetimeComponent(const LifetimeComponent&) = default;
+			LifetimeComponent(LifetimeComponent&&) = default;
+			~LifetimeComponent() = default;
+
+			inline void DecreaseLifetime(float elapsedTime);
+
+			inline float GetRemainingLifeTime() const;
+
+			inline bool IsAlive() const;
+
+			LifetimeComponent& operator=(const LifetimeComponent&) = default;
+			LifetimeComponent& operator=(LifetimeComponent&&) = default;
+
+		private:
+			float m_remainingLifetime;
+	};
+}
+
+#include <Nazara/Core/Components/LifetimeComponent.inl>
+
+#endif // NAZARA_CORE_COMPONENTS_LIFETIMECOMPONENT_HPP

include/Nazara/Core/Components/LifetimeComponent.inl

@@ -0,0 +1,31 @@
+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/Components/LifetimeComponent.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+namespace Nz
+{
+	inline LifetimeComponent::LifetimeComponent(float lifetime) :
+	m_remainingLifetime(lifetime)
+	{
+	}
+
+	inline void LifetimeComponent::DecreaseLifetime(float elapsedTime)
+	{
+		m_remainingLifetime -= elapsedTime;
+	}
+
+	inline float LifetimeComponent::GetRemainingLifeTime() const
+	{
+		return m_remainingLifetime;
+	}
+
+	inline bool LifetimeComponent::IsAlive() const
+	{
+		return m_remainingLifetime >= 0.f;
+	}
+}
+
+#include <Nazara/Core/DebugOff.hpp>

include/Nazara/Core/Systems.hpp

@@ -0,0 +1,34 @@
+// this file was automatically generated and should not be edited
+
+/*
+	Nazara Engine - Core module
+
+	Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy of
+	this software and associated documentation files (the "Software"), to deal in
+	the Software without restriction, including without limitation the rights to
+	use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+	of the Software, and to permit persons to whom the Software is furnished to do
+	so, subject to the following conditions:
+
+	The above copyright notice and this permission notice shall be included in all
+	copies or substantial portions of the Software.
+
+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+	SOFTWARE.
+*/
+
+#pragma once
+
+#ifndef NAZARA_CORE_SYSTEMS_HPP
+#define NAZARA_CORE_SYSTEMS_HPP
+
+#include <Nazara/Core/Systems/LifetimeSystem.hpp>
+
+#endif // NAZARA_CORE_SYSTEMS_HPP

include/Nazara/Core/Systems/LifetimeSystem.hpp

@@ -0,0 +1,41 @@
+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_CORE_SYSTEMS_LIFETIMESYSTEM_HPP
+#define NAZARA_CORE_SYSTEMS_LIFETIMESYSTEM_HPP
+
+#include <Nazara/Prerequisites.hpp>
+#include <Nazara/Core/Config.hpp>
+#include <Nazara/Utils/TypeList.hpp>
+#include <entt/entt.hpp>
+
+namespace Nz
+{
+	class NAZARA_CORE_API LifetimeSystem
+	{
+		public:
+			static constexpr bool AllowConcurrent = false;
+			static constexpr Int64 ExecutionOrder = 1'000'000;
+			using Components = TypeList<class LifetimeComponent>;
+
+			inline LifetimeSystem(entt::registry& registry);
+			LifetimeSystem(const LifetimeSystem&) = delete;
+			LifetimeSystem(LifetimeSystem&&) = delete;
+			~LifetimeSystem() = default;
+
+			void Update(float elapsedTime);
+
+			LifetimeSystem& operator=(const LifetimeSystem&) = delete;
+			LifetimeSystem& operator=(LifetimeSystem&&) = delete;
+
+		private:
+			entt::registry& m_registry;
+	};
+}
+
+#include <Nazara/Core/Systems/LifetimeSystem.inl>
+
+#endif // NAZARA_CORE_SYSTEMS_LIFETIMESYSTEM_HPP

include/Nazara/Core/Systems/LifetimeSystem.inl

@@ -0,0 +1,16 @@
+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/Systems/LifetimeSystem.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+namespace Nz
+{
+	inline LifetimeSystem::LifetimeSystem(entt::registry& registry) :
+	m_registry(registry)
+	{
+	}
+}
+
+#include <Nazara/Core/DebugOff.hpp>

src/Nazara/Core/Systems/LifetimeSystem.cpp

@@ -0,0 +1,21 @@
+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Core module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/Systems/LifetimeSystem.hpp>
+#include <Nazara/Core/Components/LifetimeComponent.hpp>
+#include <Nazara/Core/Debug.hpp>
+
+namespace Nz
+{
+	void LifetimeSystem::Update(float elapsedTime)
+	{
+		auto view = m_registry.view<LifetimeComponent>();
+		for (auto [entity, lifetimeComponent] : view.each())
+		{
+			lifetimeComponent.DecreaseLifetime(elapsedTime);
+			if (!lifetimeComponent.IsAlive())
+				m_registry.destroy(entity);
+		}
+	}
+}

xmake.lua

@@ -18,6 +18,7 @@ local modules = {
 				add_syslinks("dl", "pthread", "uuid")
 			end
 		end,
+		Packages = { "entt" },
 		PublicPackages = { "nazarautils" }
 	},
 	Graphics = {