(NDK) Added Listener component and system

Former-commit-id: 0553c4ad9a7e33608e9ab91bd4ca8812272a6293

SDK/include/NDK/Components/ListenerComponent.hpp

@@ -0,0 +1,32 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
+
+#pragma once
+
+#ifndef NDK_COMPONENTS_LISTENERCOMPONENT_HPP
+#define NDK_COMPONENTS_LISTENERCOMPONENT_HPP
+
+#include <NDK/Component.hpp>
+
+namespace Ndk
+{
+	class NDK_API ListenerComponent : public Component<ListenerComponent>
+	{
+		public:
+			ListenerComponent();
+			~ListenerComponent() = default;
+
+			bool IsActive() const;
+			bool SetActive(bool active = true);
+
+			static ComponentIndex componentIndex;
+
+		private:
+			bool m_isActive;
+	};
+}
+
+#include <NDK/Components/ListenerComponent.inl>
+
+#endif // NDK_COMPONENTS_LISTENERCOMPONENT_HPP

SDK/include/NDK/Components/ListenerComponent.inl

@@ -0,0 +1,21 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
+
+namespace Ndk
+{
+	inline ListenerComponent::ListenerComponent() :
+	m_isActive(true)
+	{
+	}
+
+	inline bool ListenerComponent::IsActive() const
+	{
+		return m_isActive;
+	}
+
+	inline bool ListenerComponent::SetActive(bool active)
+	{
+		m_isActive = active;
+	}
+}

SDK/include/NDK/Systems/ListenerSystem.hpp

@@ -0,0 +1,28 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
+
+#pragma once
+
+#ifndef NDK_SYSTEMS_LISTENERSYSTEM_HPP
+#define NDK_SYSTEMS_LISTENERSYSTEM_HPP
+
+#include <NDK/System.hpp>
+
+namespace Ndk
+{
+	class NDK_API ListenerSystem : public System<ListenerSystem>
+	{
+		public:
+			ListenerSystem();
+			~ListenerSystem() = default;
+
+			void Update(float elapsedTime);
+
+			static SystemIndex systemIndex;
+	};
+}
+
+#include <NDK/Systems/ListenerSystem.inl>
+
+#endif // NDK_SYSTEMS_LISTENERSYSTEM_HPP

SDK/include/NDK/Systems/ListenerSystem.inl

@@ -0,0 +1,3 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp

SDK/include/NDK/World.hpp

@@ -26,9 +26,11 @@ namespace Ndk
 		public:
 			using EntityList = std::vector<EntityHandle>;
 
-			World() = default;
+			World(bool addDefaultSystems = true);
 			~World();
 
+			void AddDefaultSystems();
+
 			BaseSystem& AddSystem(std::unique_ptr<BaseSystem>&& system);
 			template<typename SystemType, typename... Args> SystemType& AddSystem(Args&&... args);
 

SDK/include/NDK/World.inl

@@ -7,6 +7,12 @@
 
 namespace Ndk
 {
+	inline World::World(bool addDefaultSystems)
+	{
+		if (addDefaultSystems)
+			AddDefaultSystems();
+	}
+
 	inline BaseSystem& World::AddSystem(std::unique_ptr<BaseSystem>&& system)
 	{
 		NazaraAssert(system, "System must be valid");

SDK/src/NDK/Components/ListenerComponent.cpp

@@ -0,0 +1,10 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
+
+#include <NDK/Components/ListenerComponent.hpp>
+
+namespace Ndk
+{
+	ComponentIndex ListenerComponent::componentIndex;
+}

SDK/src/NDK/Components/NodeComponent.cpp

@@ -6,5 +6,5 @@
 
 namespace Ndk
 {
-	ComponentIndex NodeComponent::componentIndex = 0;
+	ComponentIndex NodeComponent::componentIndex;
 }

SDK/src/NDK/Sdk.cpp

@@ -13,7 +13,9 @@
 #include <Nazara/Utility/Utility.hpp>
 #include <NDK/Algorithm.hpp>
 #include <NDK/BaseSystem.hpp>
+#include <NDK/Components/ListenerComponent.hpp>
 #include <NDK/Components/NodeComponent.hpp>
+#include <NDK/Systems/ListenerSystem.hpp>
 
 namespace Ndk
 {
@@ -45,8 +47,12 @@ namespace Ndk
 			BaseSystem::Initialize();
 
 			// Composants
+			InitializeComponent<ListenerComponent>("NdkList");
 			InitializeComponent<NodeComponent>("NdkNode");
 
+			// Systèmes
+			InitializeSystem<ListenerSystem>();
+
 			NazaraNotice("Initialized: SDK");
 			return true;
 		}

SDK/src/NDK/Systems/ListenerSystem.cpp

@@ -0,0 +1,40 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
+
+#include <NDK/Systems/ListenerSystem.hpp>
+#include <Nazara/Audio/Audio.hpp>
+#include <NDK/Components/ListenerComponent.hpp>
+#include <NDK/Components/NodeComponent.hpp>
+
+namespace Ndk
+{
+	ListenerSystem::ListenerSystem()
+	{
+		Requires<ListenerComponent, NodeComponent>();
+	}
+
+	void ListenerSystem::Update(float elapsedTime)
+	{
+		unsigned int activeListenerCount = 0;
+
+		for (const Ndk::EntityHandle& entity : GetEntities())
+		{
+			// Le listener est-il actif ?
+			const ListenerComponent& listener = entity->GetComponent<ListenerComponent>();
+			if (!listener.IsActive())
+				continue;
+
+			const NodeComponent& node = entity->GetComponent<NodeComponent>();
+			NzAudio::SetListenerPosition(node.GetPosition(nzCoordSys_Global));
+			NzAudio::SetListenerRotation(node.GetRotation(nzCoordSys_Global));
+
+			activeListenerCount++;
+		}
+
+		if (activeListenerCount > 1)
+			NazaraWarning(NzString::Number(activeListenerCount) + " listeners were active in the same update loop");
+	}
+
+	SystemIndex ListenerSystem::systemIndex;
+}

SDK/src/NDK/World.cpp

@@ -4,6 +4,7 @@
 
 #include <NDK/World.hpp>
 #include <Nazara/Core/Error.hpp>
+#include <NDK/Systems/ListenerSystem.hpp>
 
 namespace Ndk
 {
@@ -13,6 +14,11 @@ namespace Ndk
 		Clear();
 	}
 
+	void World::AddDefaultSystems()
+	{
+		AddSystem<ListenerSystem>();
+	}
+
 	const EntityHandle& World::CreateEntity()
 	{
 		EntityId id;