(NDK) Added explicit initialisation

Components and systems just can't be initialized at startup, so we need
some kind of explicit initialisation. I followed the same layout as the
others modules by adding a core class (Ndk::Sdk) which will initialize
components and systems, and Nazara's modules.

This is starting to get serious, I like it.


Former-commit-id: 263500e8d16db70ef7f92047b8a7e3235c08bcd0

SDK/src/NDK/Sdk.cpp

@@ -0,0 +1,89 @@
+// 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/Sdk.hpp>
+#include <Nazara/Audio/Audio.hpp>
+#include <Nazara/Core/ErrorFlags.hpp>
+#include <Nazara/Core/Log.hpp>
+#include <Nazara/Graphics/Graphics.hpp>
+#include <Nazara/Lua/Lua.hpp>
+#include <Nazara/Noise/Noise.hpp>
+#include <Nazara/Physics/Physics.hpp>
+#include <Nazara/Utility/Utility.hpp>
+#include <NDK/Algorithm.hpp>
+#include <NDK/BaseSystem.hpp>
+
+namespace Ndk
+{
+	bool Sdk::Initialize()
+	{
+		if (s_referenceCounter++ > 0)
+			return true; // Déjà initialisé
+
+		try
+		{
+			NzErrorFlags errFlags(nzErrorFlag_ThrowException, true);
+
+			// Initialisation du moteur
+
+			// Modules clients
+			NzAudio::Initialize();
+			NzGraphics::Initialize();
+
+			// Modules serveurs
+			NzLua::Initialize();
+			NzNoise::Initialize();
+			NzPhysics::Initialize();
+			NzUtility::Initialize();
+
+			// Initialisation du SDK
+
+			// Initialisation des composants et systèmes
+			BaseComponent::Initialize();
+			BaseSystem::Initialize();
+
+			// Composants
+
+			NazaraNotice("Initialized: SDK");
+			return true;
+		}
+		catch (const std::exception& e)
+		{
+			NazaraError("Failed to initialize NDK: " + NzString(e.what()));
+
+			return false;
+		}
+	}
+
+	void Sdk::Uninitialize()
+	{
+		if (s_referenceCounter != 1)
+		{
+			// Le module est soit encore utilisé, soit pas initialisé
+			if (s_referenceCounter > 1)
+				s_referenceCounter--;
+
+			return;
+		}
+
+		// Libération du SDK
+		s_referenceCounter = 0;
+
+		// Libération du moteur
+
+		// Modules clients
+		NzAudio::Uninitialize();
+		NzGraphics::Uninitialize();
+
+		// Modules serveurs
+		NzLua::Uninitialize();
+		NzNoise::Uninitialize();
+		NzPhysics::Uninitialize();
+		NzUtility::Uninitialize();
+
+		NazaraNotice("Uninitialized: SDK");
+	}
+
+	unsigned int Sdk::s_referenceCounter = 0;
+}