Add initial ECS support

include/Nazara/Graphics/Components/GraphicsComponent.inl

@@ -0,0 +1,37 @@
+// Copyright (C) 2021 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <Nazara/Utility/Components/NodeComponent.hpp>
+#include <Nazara/Utility/Debug.hpp>
+#include "GraphicsComponent.hpp"
+
+namespace Nz
+{
+	inline void GraphicsComponent::AttachRenderable(std::shared_ptr<InstancedRenderable> renderable)
+	{
+		m_renderables.push_back(std::move(renderable));
+	}
+
+	inline void GraphicsComponent::DetachRenderable(const std::shared_ptr<InstancedRenderable>& renderable)
+	{
+		auto it = std::find(m_renderables.begin(), m_renderables.end(), renderable);
+		if (it != m_renderables.end())
+			m_renderables.erase(it);
+	}
+
+	inline const std::vector<std::shared_ptr<InstancedRenderable>>& GraphicsComponent::GetRenderables() const
+	{
+		return m_renderables;
+	}
+
+	inline WorldInstance& GraphicsComponent::GetWorldInstance()
+	{
+		return m_worldInstance;
+	}
+
+	inline const WorldInstance& GraphicsComponent::GetWorldInstance() const
+	{
+		return m_worldInstance;
+	}
+}