Added systems

It's now officially an ECS, yay!


Former-commit-id: e2aacaa5c9fd362921cf3d064e346d11f942bd59

SDK/src/NDK/BaseSystem.cpp

@@ -0,0 +1,41 @@
+// 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/BaseSystem.hpp>
+
+namespace Ndk
+{
+	BaseSystem::~BaseSystem()
+	{
+		for (const EntityHandle& entity : m_entities)
+			entity->UnregisterSystem(m_systemId);
+	}
+
+	bool BaseSystem::Filters(const EntityHandle& entity) const
+	{
+		for (ComponentId component : m_requiredComponents)
+		{
+			if (!entity->HasComponent(component))
+				return false; // Au moins un component requis n'est pas présent
+		}
+
+		for (ComponentId component : m_excludedComponents)
+		{
+			if (entity->HasComponent(component))
+				return false; // Au moins un component exclu est présent
+		}
+
+		return true;
+	}
+
+	void BaseSystem::OnEntityAdded(const EntityHandle& entity)
+	{
+		NazaraUnused(entity);
+	}
+
+	void BaseSystem::OnEntityRemoved(const EntityHandle& entity)
+	{
+		NazaraUnused(entity);
+	}
+}