Merge branch 'master' into vulkan

SDK/include/NDK/BaseWidget.hpp

@@ -83,9 +83,10 @@ namespace Ndk
 			};
 
 		protected:
-			const EntityHandle& CreateEntity();
+			const EntityHandle& CreateEntity(bool isContentEntity);
 			void DestroyEntity(Entity* entity);
 			virtual void Layout();
+
 			void InvalidateNode() override;
 
 			virtual bool IsFocusable() const;
@@ -111,11 +112,18 @@ namespace Ndk
 			void RegisterToCanvas();
 			inline void UpdateCanvasIndex(std::size_t index);
 			void UnregisterFromCanvas();
+			void UpdatePositionAndSize();
+
+			struct WidgetEntity
+			{
+				EntityOwner handle;
+				bool isContent;
+			};
 
 			static constexpr std::size_t InvalidCanvasIndex = std::numeric_limits<std::size_t>::max();
 
 			std::size_t m_canvasIndex;
-			std::vector<EntityOwner> m_entities;
+			std::vector<WidgetEntity> m_entities;
 			std::vector<std::unique_ptr<BaseWidget>> m_children;
 			Canvas* m_canvas;
 			EntityOwner m_backgroundEntity;

SDK/include/NDK/Canvas.inl

@@ -62,7 +62,7 @@ namespace Ndk
 		WidgetEntry& entry = m_widgetEntries[index];
 
 		Nz::Vector3f pos = entry.widget->GetPosition();
-		Nz::Vector2f size = entry.widget->GetContentSize();
+		Nz::Vector2f size = entry.widget->GetSize();
 
 		entry.box.Set(pos.x, pos.y, pos.z, size.x, size.y, 1.f);
 	}

SDK/include/NDK/Components.hpp

@@ -8,6 +8,8 @@
 #include <NDK/Components/CameraComponent.hpp>
 #include <NDK/Components/CollisionComponent2D.hpp>
 #include <NDK/Components/CollisionComponent3D.hpp>
+#include <NDK/Components/ConstraintComponent2D.hpp>
+#include <NDK/Components/DebugComponent.hpp>
 #include <NDK/Components/GraphicsComponent.hpp>
 #include <NDK/Components/LightComponent.hpp>
 #include <NDK/Components/ListenerComponent.hpp>
@@ -17,6 +19,5 @@
 #include <NDK/Components/PhysicsComponent2D.hpp>
 #include <NDK/Components/PhysicsComponent3D.hpp>
 #include <NDK/Components/VelocityComponent.hpp>
-#include <NDK/Components/ConstraintComponent2D.hpp>
 
 #endif // NDK_COMPONENTS_GLOBAL_HPP

SDK/include/NDK/Components/DebugComponent.hpp

@@ -0,0 +1,80 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#pragma once
+
+#ifndef NDK_SERVER
+#ifndef NDK_COMPONENTS_DEBUGCOMPONENT_HPP
+#define NDK_COMPONENTS_DEBUGCOMPONENT_HPP
+
+#include <Nazara/Core/Flags.hpp>
+#include <Nazara/Graphics/InstancedRenderable.hpp>
+#include <NDK/Component.hpp>
+
+namespace Ndk
+{
+	enum class DebugDraw
+	{
+		//TODO: Collider2D
+		Collider3D,
+		GraphicsAABB,
+		GraphicsOBB,
+
+		Max = GraphicsOBB
+	};
+}
+
+namespace Nz
+{
+	template<>
+	struct EnumAsFlags<Ndk::DebugDraw>
+	{
+		static constexpr Ndk::DebugDraw max = Ndk::DebugDraw::GraphicsOBB;
+	};
+}
+
+namespace Ndk
+{
+	using DebugDrawFlags = Nz::Flags<DebugDraw>;
+
+	constexpr DebugDrawFlags DebugDraw_None = 0;
+
+	class NDK_API DebugComponent : public Component<DebugComponent>
+	{
+		friend class DebugSystem;
+
+		public:
+			inline DebugComponent(DebugDrawFlags flags = DebugDraw_None);
+			inline DebugComponent(const DebugComponent& debug);
+			~DebugComponent() = default;
+
+			inline void Disable(DebugDrawFlags flags);
+			inline void Enable(DebugDrawFlags flags);
+
+			inline DebugDrawFlags GetFlags() const;
+
+			inline bool IsEnabled(DebugDrawFlags flags) const;
+
+			inline DebugComponent& operator=(const DebugComponent& debug);
+
+			static ComponentIndex componentIndex;
+
+		private:
+			inline const Nz::InstancedRenderableRef& GetDebugRenderable(DebugDraw option) const;
+			inline DebugDrawFlags GetEnabledFlags() const;
+			inline void UpdateDebugRenderable(DebugDraw option, Nz::InstancedRenderableRef renderable);
+			inline void UpdateEnabledFlags(DebugDrawFlags flags);
+
+			static constexpr std::size_t DebugModeCount = static_cast<std::size_t>(DebugDraw::Max) + 1;
+
+			std::array<Nz::InstancedRenderableRef, DebugModeCount> m_debugRenderables;
+			DebugDrawFlags m_enabledFlags;
+			DebugDrawFlags m_flags;
+	};
+}
+
+#include <NDK/Components/DebugComponent.inl>
+
+#endif // NDK_COMPONENTS_DEBUGCOMPONENT_HPP
+#endif // NDK_SERVER

SDK/include/NDK/Components/DebugComponent.inl

@@ -0,0 +1,74 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NDK/Components/DebugComponent.hpp>
+
+namespace Ndk
+{
+	inline DebugComponent::DebugComponent(DebugDrawFlags flags) :
+	m_flags(flags)
+	{
+	}
+
+	inline DebugComponent::DebugComponent(const DebugComponent& debug) :
+	m_flags(debug.m_flags)
+	{
+	}
+
+	inline void DebugComponent::Disable(DebugDrawFlags flags)
+	{
+		m_flags &= ~flags;
+
+		if (m_entity)
+			m_entity->Invalidate();
+	}
+
+	inline void DebugComponent::Enable(DebugDrawFlags flags)
+	{
+		m_flags |= flags;
+
+		if (m_entity)
+			m_entity->Invalidate();
+	}
+
+	inline DebugDrawFlags DebugComponent::GetFlags() const
+	{
+		return m_flags;
+	}
+
+	inline bool DebugComponent::IsEnabled(DebugDrawFlags flags) const
+	{
+		return (m_flags & flags) == flags;
+	}
+
+	inline DebugComponent& DebugComponent::operator=(const DebugComponent& debug)
+	{
+		m_flags = debug.m_flags;
+
+		if (m_entity)
+			m_entity->Invalidate();
+
+		return *this;
+	}
+
+	inline const Nz::InstancedRenderableRef& DebugComponent::GetDebugRenderable(DebugDraw option) const
+	{
+		return m_debugRenderables[static_cast<std::size_t>(option)];
+	}
+
+	inline DebugDrawFlags DebugComponent::GetEnabledFlags() const
+	{
+		return m_enabledFlags;
+	}
+
+	inline void DebugComponent::UpdateDebugRenderable(DebugDraw option, Nz::InstancedRenderableRef renderable)
+	{
+		m_debugRenderables[static_cast<std::size_t>(option)] = std::move(renderable);
+	}
+
+	inline void DebugComponent::UpdateEnabledFlags(DebugDrawFlags flags)
+	{
+		m_enabledFlags = flags;
+	}
+}

SDK/include/NDK/Components/GraphicsComponent.hpp

@@ -28,7 +28,7 @@ namespace Ndk
 		public:
 			using RenderableList = std::vector<Nz::InstancedRenderableRef>;
 
-			GraphicsComponent() = default;
+			GraphicsComponent();
 			inline GraphicsComponent(const GraphicsComponent& graphicsComponent);
 			~GraphicsComponent() = default;
 
@@ -54,6 +54,8 @@ namespace Ndk
 
 			inline void RemoveFromCullingList(GraphicsComponentCullingList* cullingList) const;
 
+			inline void SetScissorRect(const Nz::Recti& scissorRect);
+
 			inline void UpdateLocalMatrix(const Nz::InstancedRenderable* instancedRenderable, const Nz::Matrix4f& localMatrix);
 			inline void UpdateRenderOrder(const Nz::InstancedRenderable* instancedRenderable, int renderOrder);
 
@@ -144,6 +146,7 @@ namespace Ndk
 			std::unordered_map<const Nz::Material*, MaterialEntry> m_materialEntries;
 			mutable Nz::BoundingVolumef m_boundingVolume;
 			mutable Nz::Matrix4f m_transformMatrix;
+			Nz::Recti m_scissorRect;
 			Nz::TextureRef m_reflectionMap;
 			mutable bool m_boundingVolumeUpdated;
 			mutable bool m_transformMatrixUpdated;

SDK/include/NDK/Components/GraphicsComponent.inl

@@ -9,12 +9,16 @@
 
 namespace Ndk
 {
+	inline GraphicsComponent::GraphicsComponent() :
+	m_scissorRect(-1, -1)
+	{
+	}
+
 	/*!
 	* \brief Constructs a GraphicsComponent object by copy semantic
 	*
 	* \param graphicsComponent GraphicsComponent to copy
 	*/
-
 	inline GraphicsComponent::GraphicsComponent(const GraphicsComponent& graphicsComponent) :
 	Component(graphicsComponent),
 	HandledObject(graphicsComponent),
@@ -177,6 +181,14 @@ namespace Ndk
 		}
 	}
 
+	inline void GraphicsComponent::SetScissorRect(const Nz::Recti& scissorRect)
+	{
+		m_scissorRect = scissorRect;
+
+		for (VolumeCullingEntry& entry : m_volumeCullingEntries)
+			entry.listEntry.ForceInvalidation(); //< Invalidate render queues
+	}
+
 	inline void GraphicsComponent::UpdateLocalMatrix(const Nz::InstancedRenderable* instancedRenderable, const Nz::Matrix4f& localMatrix)
 	{
 		for (auto& renderable : m_renderables)

SDK/include/NDK/Entity.hpp

@@ -9,6 +9,7 @@
 
 #include <Nazara/Core/Bitset.hpp>
 #include <Nazara/Core/HandledObject.hpp>
+#include <Nazara/Core/MovablePtr.hpp>
 #include <Nazara/Core/Signal.hpp>
 #include <NDK/Algorithm.hpp>
 #include <NDK/Prerequisites.hpp>
@@ -33,7 +34,7 @@ namespace Ndk
 
 		public:
 			Entity(const Entity&) = delete;
-			Entity(Entity&& entity);
+			Entity(Entity&& entity) noexcept;
 			~Entity();
 
 			BaseComponent& AddComponent(std::unique_ptr<BaseComponent>&& component);
@@ -96,8 +97,8 @@ namespace Ndk
 			Nz::Bitset<> m_componentBits;
 			Nz::Bitset<> m_removedComponentBits;
 			Nz::Bitset<> m_systemBits;
+			Nz::MovablePtr<World> m_world;
 			EntityId m_id;
-			World* m_world;
 			bool m_enabled;
 			bool m_valid;
 	};

SDK/include/NDK/EntityList.inl

@@ -169,6 +169,9 @@ namespace Ndk
 
 	inline EntityList& EntityList::operator=(const EntityList& entityList)
 	{
+		for (const Ndk::EntityHandle& entity : *this)
+			entity->UnregisterEntityList(this);
+
 		m_entityBits = entityList.m_entityBits;
 		m_world = entityList.m_world;
 
@@ -180,6 +183,12 @@ namespace Ndk
 
 	inline EntityList& EntityList::operator=(EntityList&& entityList) noexcept
 	{
+		if (this == &entityList)
+			return *this;
+
+		for (const Ndk::EntityHandle& entity : *this)
+			entity->UnregisterEntityList(this);
+
 		m_entityBits = std::move(entityList.m_entityBits);
 		m_world = entityList.m_world;
 

SDK/include/NDK/EntityOwner.hpp

@@ -25,7 +25,7 @@ namespace Ndk
 
 			EntityOwner& operator=(Entity* entity);
 			EntityOwner& operator=(const EntityOwner& handle) = delete;
-			EntityOwner& operator=(EntityOwner&& handle) noexcept = default;
+			EntityOwner& operator=(EntityOwner&& handle) noexcept;
 	};
 }
 

SDK/include/NDK/EntityOwner.inl

@@ -31,7 +31,6 @@ namespace Ndk
 	*
 	* \see Reset
 	*/
-
 	inline EntityOwner::~EntityOwner()
 	{
 		Reset(nullptr);
@@ -68,13 +67,26 @@ namespace Ndk
 	*
 	* \param entity Entity to own
 	*/
-
 	inline EntityOwner& EntityOwner::operator=(Entity* entity)
 	{
 		Reset(entity);
 
 		return *this;
 	}
+
+	/*!
+	* \brief Steals ownership of a EntityOwner
+	*
+	* \param handle Handle to the new entity to own, or an invalid handle
+	*/
+	inline EntityOwner& EntityOwner::operator=(EntityOwner&& handle) noexcept
+	{
+		Reset(); //< Kill previously owned entity, if any
+
+		EntityHandle::operator=(std::move(handle));
+
+		return *this;
+	}
 }
 
 namespace std

SDK/include/NDK/Systems.hpp

@@ -5,6 +5,7 @@
 #ifndef NDK_SYSTEMS_GLOBAL_HPP
 #define NDK_SYSTEMS_GLOBAL_HPP
 
+#include <NDK/Systems/DebugSystem.hpp>
 #include <NDK/Systems/ListenerSystem.hpp>
 #include <NDK/Systems/ParticleSystem.hpp>
 #include <NDK/Systems/PhysicsSystem2D.hpp>

SDK/include/NDK/Systems/DebugSystem.hpp

@@ -0,0 +1,51 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#pragma once
+
+#ifndef NDK_SERVER
+#ifndef NDK_SYSTEMS_DEBUGSYSTEM_HPP
+#define NDK_SYSTEMS_DEBUGSYSTEM_HPP
+
+#include <Nazara/Graphics/InstancedRenderable.hpp>
+#include <Nazara/Utility/IndexBuffer.hpp>
+#include <Nazara/Utility/Mesh.hpp>
+#include <Nazara/Utility/VertexBuffer.hpp>
+#include <NDK/System.hpp>
+
+namespace Ndk
+{
+	class NDK_API DebugSystem : public System<DebugSystem>
+	{
+		public:
+			DebugSystem();
+			~DebugSystem() = default;
+
+			static SystemIndex systemIndex;
+
+		private:
+			Nz::InstancedRenderableRef GenerateBox(Nz::Boxf box);
+			Nz::InstancedRenderableRef GenerateCollision3DMesh(Entity* entity);
+
+			Nz::MaterialRef GetAABBMaterial();
+			Nz::MaterialRef GetCollisionMaterial();
+			Nz::MaterialRef GetOBBMaterial();
+			std::pair<Nz::IndexBufferRef, Nz::VertexBufferRef> GetBoxMesh();
+
+			void OnEntityValidation(Entity* entity, bool justAdded) override;
+
+			void OnUpdate(float elapsedTime) override;
+
+			Nz::MaterialRef m_aabbMaterial;
+			Nz::MaterialRef m_collisionMaterial;
+			Nz::MaterialRef m_obbMaterial;
+			Nz::IndexBufferRef m_boxMeshIndexBuffer;
+			Nz::VertexBufferRef m_boxMeshVertexBuffer;
+	};
+}
+
+#include <NDK/Systems/DebugSystem.inl>
+
+#endif // NDK_SYSTEMS_DEBUGSYSTEM_HPP
+#endif // NDK_SERVER

SDK/include/NDK/Systems/DebugSystem.inl

@@ -0,0 +1,6 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NDK/Systems/DebugSystem.hpp>
+

SDK/include/NDK/Widgets/LabelWidget.hpp

@@ -28,7 +28,7 @@ namespace Ndk
 
 			//virtual LabelWidget* Clone() const = 0;
 
-			void ResizeToContent();
+			void ResizeToContent() override;
 
 			inline void UpdateText(const Nz::AbstractTextDrawer& drawer);
 
@@ -36,6 +36,8 @@ namespace Ndk
 			LabelWidget& operator=(LabelWidget&&) = default;
 
 		private:
+			void Layout() override;
+
 			EntityHandle m_textEntity;
 			Nz::TextSpriteRef m_textSprite;
 	};

SDK/include/NDK/Widgets/TextAreaWidget.hpp

@@ -11,6 +11,7 @@
 #include <Nazara/Utility/SimpleTextDrawer.hpp>
 #include <NDK/BaseWidget.hpp>
 #include <NDK/Widgets/Enums.hpp>
+#include <vector>
 
 namespace Ndk
 {
@@ -30,15 +31,20 @@ namespace Ndk
 
 			inline void EnableMultiline(bool enable = true);
 
+			void EraseSelection();
+
 			inline unsigned int GetCharacterSize() const;
 			inline const Nz::Vector2ui& GetCursorPosition() const;
+			inline Nz::Vector2ui GetCursorPosition(std::size_t glyphIndex) const;
 			inline const Nz::String& GetDisplayText() const;
 			inline EchoMode GetEchoMode() const;
 			inline std::size_t GetGlyphIndex(const Nz::Vector2ui& cursorPosition);
 			inline const Nz::String& GetText() const;
 			inline const Nz::Color& GetTextColor() const;
 
-			std::size_t GetHoveredGlyph(float x, float y) const;
+			Nz::Vector2ui GetHoveredGlyph(float x, float y) const;
+
+			inline bool HasSelection() const;
 
 			inline bool IsMultilineEnabled() const;
 			inline bool IsReadOnly() const;
@@ -53,6 +59,7 @@ namespace Ndk
 			inline void SetCursorPosition(Nz::Vector2ui cursorPosition);
 			inline void SetEchoMode(EchoMode echoMode);
 			inline void SetReadOnly(bool readOnly = true);
+			inline void SetSelection(Nz::Vector2ui fromPosition, Nz::Vector2ui toPosition);
 			inline void SetText(const Nz::String& text);
 			inline void SetTextColor(const Nz::Color& text);
 
@@ -64,6 +71,8 @@ namespace Ndk
 			NazaraSignal(OnTextAreaCursorMove, const TextAreaWidget* /*textArea*/, std::size_t* /*newCursorPosition*/);
 			NazaraSignal(OnTextAreaKeyBackspace, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
 			NazaraSignal(OnTextAreaKeyDown, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyEnd, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyHome, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
 			NazaraSignal(OnTextAreaKeyLeft, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
 			NazaraSignal(OnTextAreaKeyReturn, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
 			NazaraSignal(OnTextAreaKeyRight, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
@@ -79,6 +88,9 @@ namespace Ndk
 			bool OnKeyPressed(const Nz::WindowEvent::KeyEvent& key) override;
 			void OnKeyReleased(const Nz::WindowEvent::KeyEvent& key) override;
 			void OnMouseButtonPress(int /*x*/, int /*y*/, Nz::Mouse::Button button) override;
+			void OnMouseButtonRelease(int /*x*/, int /*y*/, Nz::Mouse::Button button) override;
+			void OnMouseEnter() override;
+			void OnMouseMoved(int x, int y, int deltaX, int deltaY) override;
 			void OnTextEntered(char32_t character, bool repeated) override;
 
 			void RefreshCursor();
@@ -88,10 +100,13 @@ namespace Ndk
 			EntityHandle m_cursorEntity;
 			EntityHandle m_textEntity;
 			Nz::SimpleTextDrawer m_drawer;
-			Nz::SpriteRef m_cursorSprite;
 			Nz::String m_text;
 			Nz::TextSpriteRef m_textSprite;
-			Nz::Vector2ui m_cursorPosition;
+			Nz::Vector2ui m_cursorPositionBegin;
+			Nz::Vector2ui m_cursorPositionEnd;
+			Nz::Vector2ui m_selectionCursor;
+			std::vector<Nz::SpriteRef> m_cursorSprites;
+			bool m_isMouseButtonDown;
 			bool m_multiLineEnabled;
 			bool m_readOnly;
 	};

SDK/include/NDK/Widgets/TextAreaWidget.inl

@@ -8,7 +8,8 @@ namespace Ndk
 {
 	inline void TextAreaWidget::Clear()
 	{
-		m_cursorPosition.MakeZero();
+		m_cursorPositionBegin.MakeZero();
+		m_cursorPositionEnd.MakeZero();
 		m_drawer.Clear();
 		m_text.Clear();
 		m_textSprite->Update(m_drawer);
@@ -29,7 +30,30 @@ namespace Ndk
 
 	inline const Nz::Vector2ui& TextAreaWidget::GetCursorPosition() const
 	{
-		return m_cursorPosition;
+		return m_cursorPositionBegin;
+	}
+
+	Nz::Vector2ui TextAreaWidget::GetCursorPosition(std::size_t glyphIndex) const
+	{
+		glyphIndex = std::min(glyphIndex, m_drawer.GetGlyphCount());
+
+		std::size_t lineCount = m_drawer.GetLineCount();
+		std::size_t line = 0U;
+		for (std::size_t i = line + 1; i < lineCount; ++i)
+		{
+			if (m_drawer.GetLine(i).glyphIndex > glyphIndex)
+				break;
+
+			line = i;
+		}
+
+		const auto& lineInfo = m_drawer.GetLine(line);
+
+		Nz::Vector2ui cursorPos;
+		cursorPos.y = static_cast<unsigned int>(line);
+		cursorPos.x = static_cast<unsigned int>(glyphIndex - lineInfo.glyphIndex);
+
+		return cursorPos;
 	}
 
 	inline const Nz::String& TextAreaWidget::GetDisplayText() const
@@ -63,7 +87,12 @@ namespace Ndk
 		return m_drawer.GetColor();
 	}
 
-	inline bool Ndk::TextAreaWidget::IsMultilineEnabled() const
+	inline bool TextAreaWidget::HasSelection() const
+	{
+		return m_cursorPositionBegin != m_cursorPositionEnd;
+	}
+
+	inline bool TextAreaWidget::IsMultilineEnabled() const
 	{
 		return m_multiLineEnabled;
 	}
@@ -75,7 +104,7 @@ namespace Ndk
 
 	inline void TextAreaWidget::MoveCursor(int offset)
 	{
-		std::size_t cursorGlyph = GetGlyphIndex(m_cursorPosition);
+		std::size_t cursorGlyph = GetGlyphIndex(m_cursorPositionBegin);
 		if (offset >= 0)
 			SetCursorPosition(cursorGlyph + static_cast<std::size_t>(offset));
 		else
@@ -104,7 +133,7 @@ namespace Ndk
 			}
 		};
 
-		Nz::Vector2ui cursorPosition = m_cursorPosition;
+		Nz::Vector2ui cursorPosition = m_cursorPositionBegin;
 		cursorPosition.x = ClampOffset(static_cast<unsigned int>(cursorPosition.x), offset.x);
 		cursorPosition.y = ClampOffset(static_cast<unsigned int>(cursorPosition.y), offset.y);
 
@@ -120,22 +149,8 @@ namespace Ndk
 	{
 		OnTextAreaCursorMove(this, &glyphIndex);
 
-		glyphIndex = std::min(glyphIndex, m_drawer.GetGlyphCount());
-
-		std::size_t lineCount = m_drawer.GetLineCount();
-		std::size_t line = 0U;
-		for (std::size_t i = line + 1; i < lineCount; ++i)
-		{
-			if (m_drawer.GetLine(i).glyphIndex > glyphIndex)
-				break;
-
-			line = i;
-		}
-
-		const auto& lineInfo = m_drawer.GetLine(line);
-
-		m_cursorPosition.y = static_cast<unsigned int>(line);
-		m_cursorPosition.x = static_cast<unsigned int>(glyphIndex - lineInfo.glyphIndex);
+		m_cursorPositionBegin = GetCursorPosition(glyphIndex);
+		m_cursorPositionEnd = m_cursorPositionBegin;
 
 		RefreshCursor();
 	}
@@ -146,7 +161,7 @@ namespace Ndk
 		if (cursorPosition.y >= lineCount)
 			cursorPosition.y = static_cast<unsigned int>(lineCount - 1);
 
-		m_cursorPosition = cursorPosition;
+		m_cursorPositionBegin = cursorPosition;
 
 		const auto& lineInfo = m_drawer.GetLine(cursorPosition.y);
 		if (cursorPosition.y + 1 < lineCount)
@@ -155,6 +170,8 @@ namespace Ndk
 			cursorPosition.x = std::min(cursorPosition.x, static_cast<unsigned int>(nextLineInfo.glyphIndex - lineInfo.glyphIndex - 1));
 		}
 
+		m_cursorPositionEnd = m_cursorPositionBegin;
+
 		std::size_t glyphIndex = lineInfo.glyphIndex + cursorPosition.x;
 
 		OnTextAreaCursorMove(this, &glyphIndex);
@@ -175,6 +192,23 @@ namespace Ndk
 		m_cursorEntity->Enable(!m_readOnly && HasFocus());
 	}
 
+	inline void TextAreaWidget::SetSelection(Nz::Vector2ui fromPosition, Nz::Vector2ui toPosition)
+	{
+		///TODO: Check if position are valid
+
+		// Ensure begin is before end
+		if (toPosition.y < fromPosition.y || (toPosition.y == fromPosition.y && toPosition.x < fromPosition.x))
+			std::swap(fromPosition, toPosition);
+
+		if (m_cursorPositionBegin != fromPosition || m_cursorPositionEnd != toPosition)
+		{
+			m_cursorPositionBegin = fromPosition;
+			m_cursorPositionEnd = toPosition;
+
+			RefreshCursor();
+		}
+	}
+
 	inline void TextAreaWidget::SetText(const Nz::String& text)
 	{
 		m_text = text;

SDK/include/NDK/World.hpp

@@ -50,11 +50,16 @@ namespace Ndk
 			inline void DisableProfiler();
 			inline void EnableProfiler(bool enable = true);
 
+			template<typename F> void ForEachSystem(const F& iterationFunc);
+			template<typename F> void ForEachSystem(const F& iterationFunc) const;
+
 			inline const EntityHandle& GetEntity(EntityId id);
 			inline const EntityList& GetEntities() const;
 			inline const ProfilerData& GetProfilerData() const;
 			inline BaseSystem& GetSystem(SystemIndex index);
+			inline const BaseSystem& GetSystem(SystemIndex index) const;
 			template<typename SystemType> SystemType& GetSystem();
+			template<typename SystemType> const SystemType& GetSystem() const;
 
 			inline bool HasSystem(SystemIndex index) const;
 			template<typename SystemType> bool HasSystem() const;

SDK/include/NDK/World.inl

@@ -133,6 +133,40 @@ namespace Ndk
 		}
 	}
 
+	/*!
+	* \brief Executes a function on every present system
+	*
+	* Calls iterationFunc on every previously added system, in the same order as their indexes
+	*
+	* \param iterationFunc Function to be called
+	*/
+	template<typename F>
+	void World::ForEachSystem(const F& iterationFunc)
+	{
+		for (const auto& systemPtr : m_systems)
+		{
+			if (systemPtr)
+				iterationFunc(*systemPtr);
+		}
+	}
+
+	/*!
+	* \brief Executes a function on every present system
+	*
+	* Calls iterationFunc on every previously added system, in the same order as their indexes
+	*
+	* \param iterationFunc Function to be called
+	*/
+	template<typename F>
+	void World::ForEachSystem(const F& iterationFunc) const
+	{
+		for (const auto& systemPtr : m_systems)
+		{
+			if (systemPtr)
+				iterationFunc(static_cast<const Ndk::BaseSystem&>(*systemPtr)); //< Force const reference
+		}
+	}
+
 	/*!
 	* \brief Gets an entity
 	* \return A constant reference to a handle of the entity
@@ -177,9 +211,8 @@ namespace Ndk
 	*
 	* \param index Index of the system
 	*
-	* \remark Produces a NazaraAssert if system is not available in this world
+	* \remark The world must have the system before calling this function
 	*/
-
 	inline BaseSystem& World::GetSystem(SystemIndex index)
 	{
 		NazaraAssert(HasSystem(index), "This system is not part of the world");
@@ -190,13 +223,30 @@ namespace Ndk
 		return *system;
 	}
 
+	/*!
+	* \brief Gets a system in the world by index
+	* \return A const reference to the system
+	*
+	* \param index Index of the system
+	*
+	* \remark The world must have the system before calling this function
+	*/
+	inline const BaseSystem& World::GetSystem(SystemIndex index) const
+	{
+		NazaraAssert(HasSystem(index), "This system is not part of the world");
+
+		const BaseSystem* system = m_systems[index].get();
+		NazaraAssert(system, "Invalid system pointer");
+
+		return *system;
+	}
+
 	/*!
 	* \brief Gets a system in the world by type
 	* \return A reference to the system
 	*
 	* \remark Produces a NazaraAssert if system is not available in this world
 	*/
-
 	template<typename SystemType>
 	SystemType& World::GetSystem()
 	{
@@ -206,6 +256,21 @@ namespace Ndk
 		return static_cast<SystemType&>(GetSystem(index));
 	}
 
+	/*!
+	* \brief Gets a system in the world by type
+	* \return A const reference to the system
+	*
+	* \remark Produces a NazaraAssert if system is not available in this world
+	*/
+	template<typename SystemType>
+	const SystemType& World::GetSystem() const
+	{
+		static_assert(std::is_base_of<BaseSystem, SystemType>::value, "SystemType is not a system");
+
+		SystemIndex index = GetSystemIndex<SystemType>();
+		return static_cast<const SystemType&>(GetSystem(index));
+	}
+
 	/*!
 	* \brief Checks whether or not a system is present in the world by index
 	* \return true If it is the case
@@ -361,7 +426,7 @@ namespace Ndk
 		m_orderedSystems        = std::move(world.m_orderedSystems);
 		m_orderedSystemsUpdated = world.m_orderedSystemsUpdated;
 		m_profilerData          = std::move(world.m_profilerData);
-		m_isProfilerEnabled     = m_isProfilerEnabled;
+		m_isProfilerEnabled     = world.m_isProfilerEnabled;
 
 		m_entities = std::move(world.m_entities);
 		for (EntityBlock& block : m_entities)

SDK/src/NDK/BaseWidget.cpp

@@ -81,7 +81,7 @@ namespace Ndk
 			m_backgroundSprite->SetColor(m_backgroundColor);
 			m_backgroundSprite->SetMaterial(Nz::Material::New((m_backgroundColor.IsOpaque()) ? "Basic2D" : "Translucent2D")); //< TODO: Use a shared material instead of creating one everytime
 
-			m_backgroundEntity = CreateEntity();
+			m_backgroundEntity = CreateEntity(false);
 			m_backgroundEntity->AddComponent<GraphicsComponent>().Attach(m_backgroundSprite, -1);
 			m_backgroundEntity->AddComponent<NodeComponent>().SetParent(this);
 
@@ -147,26 +147,30 @@ namespace Ndk
 			else
 				UnregisterFromCanvas();
 
-			for (const EntityHandle& entity : m_entities)
-				entity->Enable(show);
+			for (WidgetEntity& entity : m_entities)
+				entity.handle->Enable(show);
 
 			for (const auto& widgetPtr : m_children)
 				widgetPtr->Show(show);
 		}
 	}
 
-	const Ndk::EntityHandle& BaseWidget::CreateEntity()
+	const Ndk::EntityHandle& BaseWidget::CreateEntity(bool isContentEntity)
 	{
 		const EntityHandle& newEntity = m_world->CreateEntity();
 		newEntity->Enable(m_visible);
 
-		m_entities.emplace_back(newEntity);
+		m_entities.emplace_back();
+		WidgetEntity& widgetEntity = m_entities.back();
+		widgetEntity.handle = newEntity;
+		widgetEntity.isContent = isContentEntity;
+
 		return newEntity;
 	}
 
 	void BaseWidget::DestroyEntity(Entity* entity)
 	{
-		auto it = std::find(m_entities.begin(), m_entities.end(), entity);
+		auto it = std::find_if(m_entities.begin(), m_entities.end(), [&](const WidgetEntity& widgetEntity) { return widgetEntity.handle == entity; });
 		NazaraAssert(it != m_entities.end(), "Entity does not belong to this widget");
 
 		m_entities.erase(it);
@@ -174,19 +178,17 @@ namespace Ndk
 
 	void BaseWidget::Layout()
 	{
-		if (IsRegisteredToCanvas())
-			m_canvas->NotifyWidgetBoxUpdate(m_canvasIndex);
-
 		if (m_backgroundEntity)
 			m_backgroundSprite->SetSize(m_contentSize.x + m_padding.left + m_padding.right, m_contentSize.y + m_padding.top + m_padding.bottom);
+
+		UpdatePositionAndSize();
 	}
 
 	void BaseWidget::InvalidateNode()
 	{
 		Node::InvalidateNode();
 
-		if (IsRegisteredToCanvas())
-			m_canvas->NotifyWidgetBoxUpdate(m_canvasIndex);
+		UpdatePositionAndSize();
 	}
 
 	bool BaseWidget::IsFocusable() const
@@ -271,4 +273,25 @@ namespace Ndk
 			m_canvasIndex = InvalidCanvasIndex;
 		}
 	}
+
+	void BaseWidget::UpdatePositionAndSize()
+	{
+		if (IsRegisteredToCanvas())
+			m_canvas->NotifyWidgetBoxUpdate(m_canvasIndex);
+
+		Nz::Vector2f widgetPos = Nz::Vector2f(GetPosition());
+		Nz::Vector2f widgetSize = GetSize();
+
+		Nz::Vector2f contentPos = widgetPos + GetContentOrigin();
+		Nz::Vector2f contentSize = GetContentSize();
+
+		Nz::Recti fullBounds(Nz::Rectf(widgetPos.x, widgetPos.y, widgetSize.x, widgetSize.y));
+		Nz::Recti contentBounds(Nz::Rectf(contentPos.x, contentPos.y, contentSize.x, contentSize.y));
+		for (WidgetEntity& widgetEntity : m_entities)
+		{
+			const Ndk::EntityHandle& entity = widgetEntity.handle;
+			if (entity->HasComponent<GraphicsComponent>())
+				entity->GetComponent<GraphicsComponent>().SetScissorRect((widgetEntity.isContent) ? contentBounds : fullBounds);
+		}
+	}
 }

SDK/src/NDK/Components/CollisionComponent2D.cpp

@@ -59,6 +59,7 @@ namespace Ndk
 		Nz::PhysWorld2D& physWorld = entityWorld->GetSystem<PhysicsSystem2D>().GetWorld();
 
 		m_staticBody = std::make_unique<Nz::RigidBody2D>(&physWorld, 0.f, m_geom);
+		m_staticBody->SetUserdata(reinterpret_cast<void*>(static_cast<std::ptrdiff_t>(m_entity->GetId())));
 
 		Nz::Matrix4f matrix;
 		if (m_entity->HasComponent<NodeComponent>())

SDK/src/NDK/Components/DebugComponent.cpp

@@ -0,0 +1,10 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NDK/Components/DebugComponent.hpp>
+
+namespace Ndk
+{
+	ComponentIndex DebugComponent::componentIndex;
+}

SDK/src/NDK/Components/GraphicsComponent.cpp

@@ -35,7 +35,7 @@ namespace Ndk
 				object.dataUpdated = true;
 			}
 
-			object.renderable->AddToRenderQueue(renderQueue, object.data);
+			object.renderable->AddToRenderQueue(renderQueue, object.data, m_scissorRect);
 		}
 	}
 
@@ -277,12 +277,13 @@ namespace Ndk
 			{
 				Nz::Boxf localBox = boundingVolume.obb.localBox;
 				Nz::Vector3f newPos = r.data.localMatrix * localBox.GetPosition();
-				Nz::Vector3f newLengths = r.data.localMatrix * localBox.GetLengths();
+				Nz::Vector3f newCorner = r.data.localMatrix * (localBox.GetPosition() + localBox.GetLengths());
+				Nz::Vector3f newLengths = newCorner - newPos;
 
 				boundingVolume.Set(Nz::Boxf(newPos.x, newPos.y, newPos.z, newLengths.x, newLengths.y, newLengths.z));
 			}
 
-			m_boundingVolume.ExtendTo(r.renderable->GetBoundingVolume());
+			m_boundingVolume.ExtendTo(boundingVolume);
 		}
 
 		RenderSystem& renderSystem = m_entity->GetWorld()->GetSystem<RenderSystem>();

SDK/src/NDK/Components/PhysicsComponent2D.cpp

@@ -8,6 +8,7 @@
 #include <NDK/Components/CollisionComponent2D.hpp>
 #include <NDK/Components/NodeComponent.hpp>
 #include <NDK/Systems/PhysicsSystem2D.hpp>
+#include <memory>
 
 namespace Ndk
 {
@@ -40,8 +41,9 @@ namespace Ndk
 		else
 			matrix.MakeIdentity();
 
-		m_object.reset(new Nz::RigidBody2D(&world, 1.f, geom));
+		m_object = std::make_unique<Nz::RigidBody2D>(&world, 1.f, geom);
 		m_object->SetPosition(Nz::Vector2f(matrix.GetTranslation()));
+		m_object->SetUserdata(reinterpret_cast<void*>(static_cast<std::ptrdiff_t>(m_entity->GetId())));
 	}
 
 	/*!

SDK/src/NDK/Entity.cpp

@@ -14,26 +14,8 @@ namespace Ndk
 	* \brief NDK class that represents an entity in a world
 	*/
 
-	/*!
-	* \brief Constructs a Entity object by move semantic
-	*
-	* \param entity Entity to move into this
-	*/
-
-	Entity::Entity(Entity&& entity) :
-	HandledObject(std::move(entity)),
-	m_components(std::move(entity.m_components)),
-	m_containedInLists(std::move(entity.m_containedInLists)),
-	m_componentBits(std::move(entity.m_componentBits)),
-	m_removedComponentBits(std::move(entity.m_removedComponentBits)),
-	m_systemBits(std::move(entity.m_systemBits)),
-	m_id(entity.m_id),
-	m_world(entity.m_world),
-	m_enabled(entity.m_enabled),
-	m_valid(entity.m_valid)
-	{
-		entity.m_world = nullptr;
-	}
+	// Must exists in .cpp file because of BaseComponent unique_ptr
+	Entity::Entity(Entity&&) noexcept = default;
 
 	/*!
 	* \brief Constructs a Entity object linked to a world and with an id
@@ -41,7 +23,6 @@ namespace Ndk
 	* \param world World in which the entity interact
 	* \param id Identifier of the entity
 	*/
-
 	Entity::Entity(World* world, EntityId id) :
 	m_id(id),
 	m_world(world)
@@ -53,7 +34,6 @@ namespace Ndk
 	*
 	* \see Destroy
 	*/
-
 	Entity::~Entity()
 	{
 		if (m_world && m_valid)

SDK/src/NDK/Sdk.cpp

@@ -28,11 +28,13 @@
 
 #ifndef NDK_SERVER
 #include <NDK/Components/CameraComponent.hpp>
+#include <NDK/Components/DebugComponent.hpp>
 #include <NDK/Components/LightComponent.hpp>
 #include <NDK/Components/ListenerComponent.hpp>
 #include <NDK/Components/GraphicsComponent.hpp>
 #include <NDK/Components/ParticleEmitterComponent.hpp>
 #include <NDK/Components/ParticleGroupComponent.hpp>
+#include <NDK/Systems/DebugSystem.hpp>
 #include <NDK/Systems/ParticleSystem.hpp>
 #include <NDK/Systems/ListenerSystem.hpp>
 #include <NDK/Systems/RenderSystem.hpp>
@@ -95,6 +97,7 @@ namespace Ndk
 			#ifndef NDK_SERVER
 			// Client components
 			InitializeComponent<CameraComponent>("NdkCam");
+			InitializeComponent<DebugComponent>("NdkDebug");
 			InitializeComponent<LightComponent>("NdkLight");
 			InitializeComponent<ListenerComponent>("NdkList");
 			InitializeComponent<GraphicsComponent>("NdkGfx");
@@ -113,6 +116,7 @@ namespace Ndk
 
 			#ifndef NDK_SERVER
 			// Client systems
+			InitializeSystem<DebugSystem>();
 			InitializeSystem<ListenerSystem>();
 			InitializeSystem<ParticleSystem>();
 			InitializeSystem<RenderSystem>();

SDK/src/NDK/Systems/DebugSystem.cpp

@@ -0,0 +1,366 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NDK/Systems/DebugSystem.hpp>
+#include <Nazara/Core/Primitive.hpp>
+#include <Nazara/Graphics/Model.hpp>
+#include <Nazara/Utility/IndexIterator.hpp>
+#include <Nazara/Utility/Mesh.hpp>
+#include <Nazara/Utility/StaticMesh.hpp>
+#include <NDK/Components/CollisionComponent3D.hpp>
+#include <NDK/Components/DebugComponent.hpp>
+#include <NDK/Components/GraphicsComponent.hpp>
+#include <NDK/Components/NodeComponent.hpp>
+
+namespace Ndk
+{
+	namespace
+	{
+		class DebugRenderable : public Nz::InstancedRenderable
+		{
+			public:
+				DebugRenderable(Ndk::Entity* owner, Nz::MaterialRef mat, Nz::IndexBufferRef indexBuffer, Nz::VertexBufferRef vertexBuffer) :
+				m_entityOwner(owner),
+				m_material(std::move(mat)),
+				m_indexBuffer(std::move(indexBuffer)),
+				m_vertexBuffer(std::move(vertexBuffer))
+				{
+					ResetMaterials(1);
+
+					m_meshData.indexBuffer = m_indexBuffer;
+					m_meshData.primitiveMode = Nz::PrimitiveMode_LineList;
+					m_meshData.vertexBuffer = m_vertexBuffer;
+				}
+
+				void UpdateBoundingVolume(InstanceData* instanceData) const override
+				{
+				}
+
+				void MakeBoundingVolume() const override
+				{
+					m_boundingVolume.MakeNull();
+				}
+
+			protected:
+				Ndk::EntityHandle m_entityOwner;
+				Nz::IndexBufferRef m_indexBuffer;
+				Nz::MaterialRef m_material;
+				Nz::MeshData m_meshData;
+				Nz::VertexBufferRef m_vertexBuffer;
+		};
+
+		class AABBDebugRenderable : public DebugRenderable
+		{
+			public:
+				using DebugRenderable::DebugRenderable;
+
+				void AddToRenderQueue(Nz::AbstractRenderQueue* renderQueue, const InstanceData& instanceData, const Nz::Recti& scissorRect) const override
+				{
+					NazaraAssert(m_entityOwner, "DebugRenderable has no owner");
+
+					const DebugComponent& entityDebug = m_entityOwner->GetComponent<DebugComponent>();
+					const GraphicsComponent& entityGfx = m_entityOwner->GetComponent<GraphicsComponent>();
+
+					Nz::Matrix4f transformMatrix = Nz::Matrix4f::Identity();
+					transformMatrix.SetScale(entityGfx.GetBoundingVolume().aabb.GetLengths());
+					transformMatrix.SetTranslation(entityGfx.GetBoundingVolume().aabb.GetCenter());
+
+					renderQueue->AddMesh(0, m_material, m_meshData, Nz::Boxf::Zero(), transformMatrix, scissorRect);
+				}
+		};
+
+		class OBBDebugRenderable : public DebugRenderable
+		{
+			public:
+				using DebugRenderable::DebugRenderable;
+
+				void AddToRenderQueue(Nz::AbstractRenderQueue* renderQueue, const InstanceData& instanceData, const Nz::Recti& scissorRect) const override
+				{
+					NazaraAssert(m_entityOwner, "DebugRenderable has no owner");
+
+					const DebugComponent& entityDebug = m_entityOwner->GetComponent<DebugComponent>();
+					const GraphicsComponent& entityGfx = m_entityOwner->GetComponent<GraphicsComponent>();
+
+					Nz::Matrix4f transformMatrix = instanceData.transformMatrix;
+					transformMatrix.ApplyScale(entityGfx.GetBoundingVolume().obb.localBox.GetLengths());
+
+					renderQueue->AddMesh(0, m_material, m_meshData, Nz::Boxf::Zero(), transformMatrix, scissorRect);
+				}
+		};
+	}
+
+	/*!
+	* \ingroup NDK
+	* \class Ndk::DebugSystem
+	* \brief NDK class that represents the debug system
+	*
+	* \remark This system is enabled if the entity owns the trait: DebugComponent and GraphicsComponent
+	*/
+
+	/*!
+	* \brief Constructs an DebugSystem object by default
+	*/
+	DebugSystem::DebugSystem()
+	{
+		Requires<DebugComponent, GraphicsComponent>();
+		SetUpdateOrder(1000); //< Update last
+	}
+
+	std::pair<Nz::IndexBufferRef, Nz::VertexBufferRef> DebugSystem::GetBoxMesh()
+	{
+		if (!m_boxMeshIndexBuffer)
+		{
+			std::array<Nz::UInt16, 24> indices = {
+				{
+					0, 1,
+					1, 2,
+					2, 3,
+					3, 0,
+
+					4, 5,
+					5, 6,
+					6, 7,
+					7, 4,
+
+					0, 4,
+					1, 5,
+					2, 6,
+					3, 7
+				}
+			};
+
+			m_boxMeshIndexBuffer = Nz::IndexBuffer::New(false, Nz::UInt32(indices.size()), Nz::DataStorage_Hardware, 0);
+			m_boxMeshIndexBuffer->Fill(indices.data(), 0, Nz::UInt32(indices.size()));
+		}
+
+		if (!m_boxMeshVertexBuffer)
+		{
+			Nz::Boxf box(-0.5f, -0.5f, -0.5f, 1.f, 1.f, 1.f);
+
+			std::array<Nz::Vector3f, 8> positions = {
+				{
+					box.GetCorner(Nz::BoxCorner_FarLeftBottom),
+					box.GetCorner(Nz::BoxCorner_NearLeftBottom),
+					box.GetCorner(Nz::BoxCorner_NearRightBottom),
+					box.GetCorner(Nz::BoxCorner_FarRightBottom),
+					box.GetCorner(Nz::BoxCorner_FarLeftTop),
+					box.GetCorner(Nz::BoxCorner_NearLeftTop),
+					box.GetCorner(Nz::BoxCorner_NearRightTop),
+					box.GetCorner(Nz::BoxCorner_FarRightTop)
+				}
+			};
+
+			m_boxMeshVertexBuffer = Nz::VertexBuffer::New(Nz::VertexDeclaration::Get(Nz::VertexLayout_XYZ), Nz::UInt32(positions.size()), Nz::DataStorage_Hardware, 0);
+			m_boxMeshVertexBuffer->Fill(positions.data(), 0, Nz::UInt32(positions.size()));
+		}
+
+		return { m_boxMeshIndexBuffer, m_boxMeshVertexBuffer };
+	}
+
+	void DebugSystem::OnEntityValidation(Entity* entity, bool /*justAdded*/)
+	{
+		static constexpr int DebugDrawOrder = 1'000;
+
+		DebugComponent& entityDebug = entity->GetComponent<DebugComponent>();
+		GraphicsComponent& entityGfx = entity->GetComponent<GraphicsComponent>();
+
+		DebugDrawFlags enabledFlags = entityDebug.GetEnabledFlags();
+		DebugDrawFlags flags = entityDebug.GetFlags();
+
+		DebugDrawFlags flagsToEnable = flags & ~enabledFlags;
+		for (std::size_t i = 0; i <= static_cast<std::size_t>(DebugDraw::Max); ++i)
+		{
+			DebugDraw option = static_cast<DebugDraw>(i);
+			if (flagsToEnable & option)
+			{
+				switch (option)
+				{
+					case DebugDraw::Collider3D:
+					{
+						const Nz::Boxf& obb = entityGfx.GetBoundingVolume().obb.localBox;
+
+						Nz::InstancedRenderableRef renderable = GenerateCollision3DMesh(entity);
+						if (renderable)
+						{
+							renderable->SetPersistent(false);
+
+							entityGfx.Attach(renderable, Nz::Matrix4f::Translate(obb.GetCenter()), DebugDrawOrder);
+						}
+
+						entityDebug.UpdateDebugRenderable(option, std::move(renderable));
+						break;
+					}
+
+					case DebugDraw::GraphicsAABB:
+					{
+						auto indexVertexBuffers = GetBoxMesh();
+
+						Nz::InstancedRenderableRef renderable = new AABBDebugRenderable(entity, GetAABBMaterial(), indexVertexBuffers.first, indexVertexBuffers.second);
+						renderable->SetPersistent(false);
+
+						entityGfx.Attach(renderable, Nz::Matrix4f::Identity(), DebugDrawOrder);
+
+						entityDebug.UpdateDebugRenderable(option, std::move(renderable));
+						break;
+					}
+
+					case DebugDraw::GraphicsOBB:
+					{
+						auto indexVertexBuffers = GetBoxMesh();
+
+						Nz::InstancedRenderableRef renderable = new OBBDebugRenderable(entity, GetOBBMaterial(), indexVertexBuffers.first, indexVertexBuffers.second);
+						renderable->SetPersistent(false);
+
+						entityGfx.Attach(renderable, Nz::Matrix4f::Identity(), DebugDrawOrder);
+
+						entityDebug.UpdateDebugRenderable(option, std::move(renderable));
+						break;
+					}
+
+					default:
+						break;
+				}
+			}
+		}
+
+		DebugDrawFlags flagsToDisable = enabledFlags & ~flags;
+		for (std::size_t i = 0; i <= static_cast<std::size_t>(DebugDraw::Max); ++i)
+		{
+			DebugDraw option = static_cast<DebugDraw>(i);
+			if (flagsToDisable & option)
+				entityGfx.Detach(entityDebug.GetDebugRenderable(option));
+		}
+
+		entityDebug.UpdateEnabledFlags(flags);
+	}
+
+	void DebugSystem::OnUpdate(float elapsedTime)
+	{
+		// Nothing to do
+	}
+
+	Nz::InstancedRenderableRef DebugSystem::GenerateBox(Nz::Boxf box)
+	{
+		Nz::MeshRef mesh = Nz::Mesh::New();
+		mesh->CreateStatic();
+
+		mesh->BuildSubMesh(Nz::Primitive::Box(box.GetLengths()));
+		mesh->SetMaterialCount(1);
+
+		Nz::ModelRef model = Nz::Model::New();
+		model->SetMesh(mesh);
+		model->SetMaterial(0, GetOBBMaterial());
+
+		return model;
+	}
+
+	Nz::InstancedRenderableRef DebugSystem::GenerateCollision3DMesh(Entity* entity)
+	{
+		if (entity->HasComponent<CollisionComponent3D>())
+		{
+			CollisionComponent3D& entityCollision = entity->GetComponent<CollisionComponent3D>();
+			const Nz::Collider3DRef& geom = entityCollision.GetGeom();
+
+			std::vector<Nz::Vector3f> vertices;
+			std::vector<std::size_t> indices;
+
+			geom->ForEachPolygon([&](const float* polygonVertices, std::size_t vertexCount)
+			{
+				std::size_t firstIndex = vertices.size();
+
+				for (std::size_t i = 0; i < vertexCount; ++i)
+				{
+					const float* vertexData = &polygonVertices[i * 3];
+					vertices.emplace_back(vertexData[0], vertexData[1], vertexData[2]);
+				}
+
+				for (std::size_t i = 0; i < vertexCount - 1; ++i)
+				{
+					indices.push_back(firstIndex + i);
+					indices.push_back(firstIndex + i + 1);
+				}
+
+				indices.push_back(firstIndex + vertexCount - 1);
+				indices.push_back(firstIndex);
+			});
+
+			Nz::IndexBufferRef indexBuffer = Nz::IndexBuffer::New(vertices.size() > 0xFFFF, Nz::UInt32(indices.size()), Nz::DataStorage_Hardware, 0);
+			Nz::IndexMapper indexMapper(indexBuffer, Nz::BufferAccess_WriteOnly);
+
+			Nz::IndexIterator indexPtr = indexMapper.begin();
+			for (std::size_t index : indices)
+				*indexPtr++ = static_cast<Nz::UInt32>(index);
+
+			indexMapper.Unmap();
+
+			Nz::VertexBufferRef vertexBuffer = Nz::VertexBuffer::New(Nz::VertexDeclaration::Get(Nz::VertexLayout_XYZ), Nz::UInt32(vertices.size()), Nz::DataStorage_Hardware, 0);
+			vertexBuffer->Fill(vertices.data(), 0, Nz::UInt32(vertices.size()));
+
+			Nz::MeshRef mesh = Nz::Mesh::New();
+			mesh->CreateStatic();
+
+			Nz::StaticMeshRef subMesh = Nz::StaticMesh::New(mesh);
+			subMesh->Create(vertexBuffer);
+			subMesh->SetIndexBuffer(indexBuffer);
+			subMesh->SetPrimitiveMode(Nz::PrimitiveMode_LineList);
+			subMesh->SetMaterialIndex(0);
+			subMesh->GenerateAABB();
+
+			mesh->SetMaterialCount(1);
+			mesh->AddSubMesh(subMesh);
+
+			Nz::ModelRef model = Nz::Model::New();
+			model->SetMesh(mesh);
+			model->SetMaterial(0, GetCollisionMaterial());
+
+			return model;
+		}
+		else
+			return nullptr;
+	}
+
+	Nz::MaterialRef DebugSystem::GetAABBMaterial()
+	{
+		if (!m_aabbMaterial)
+		{
+			m_aabbMaterial = Nz::Material::New();
+			m_aabbMaterial->EnableFaceCulling(false);
+			m_aabbMaterial->EnableDepthBuffer(true);
+			m_aabbMaterial->SetDiffuseColor(Nz::Color::Red);
+			m_aabbMaterial->SetFaceFilling(Nz::FaceFilling_Line);
+		}
+
+		return m_aabbMaterial;
+	}
+
+	Nz::MaterialRef DebugSystem::GetCollisionMaterial()
+	{
+		if (!m_collisionMaterial)
+		{
+			m_collisionMaterial = Nz::Material::New();
+			m_collisionMaterial->EnableFaceCulling(false);
+			m_collisionMaterial->EnableDepthBuffer(true);
+			m_collisionMaterial->SetDiffuseColor(Nz::Color::Blue);
+			m_collisionMaterial->SetFaceFilling(Nz::FaceFilling_Line);
+		}
+
+		return m_collisionMaterial;
+	}
+
+	Nz::MaterialRef DebugSystem::GetOBBMaterial()
+	{
+		if (!m_obbMaterial)
+		{
+			m_obbMaterial = Nz::Material::New();
+			m_obbMaterial->EnableFaceCulling(false);
+			m_obbMaterial->EnableDepthBuffer(true);
+			m_obbMaterial->SetDiffuseColor(Nz::Color::Green);
+			m_obbMaterial->SetFaceFilling(Nz::FaceFilling_Line);
+		}
+
+		return m_obbMaterial;
+	}
+
+	SystemIndex DebugSystem::systemIndex;
+}

SDK/src/NDK/Systems/ListenerSystem.cpp

@@ -6,7 +6,6 @@
 #include <Nazara/Audio/Audio.hpp>
 #include <NDK/Components/ListenerComponent.hpp>
 #include <NDK/Components/NodeComponent.hpp>
-#include <NDK/Components/VelocityComponent.hpp>
 
 namespace Ndk
 {
@@ -34,7 +33,7 @@ namespace Ndk
 	* \param elapsedTime Delta time used for the update
 	*/
 
-	void ListenerSystem::OnUpdate(float /*elapsedTime*/)
+	void ListenerSystem::OnUpdate(float elapsedTime)
 	{
 		std::size_t activeListenerCount = 0;
 
@@ -45,18 +44,18 @@ namespace Ndk
 			if (!listener.IsActive())
 				continue;
 
+			Nz::Vector3f oldPos = Nz::Audio::GetListenerPosition();
+
 			// We get the position and the rotation to affect these to the listener
 			const NodeComponent& node = entity->GetComponent<NodeComponent>();
-			Nz::Audio::SetListenerPosition(node.GetPosition(Nz::CoordSys_Global));
+			Nz::Vector3f newPos = node.GetPosition(Nz::CoordSys_Global);
+
+			Nz::Audio::SetListenerPosition(newPos);
 			Nz::Audio::SetListenerRotation(node.GetRotation(Nz::CoordSys_Global));
 
-			// We verify the presence of a component of velocity
-			// (The listener'speed does not move it, but disturbs the sound like Doppler effect)
-			if (entity->HasComponent<VelocityComponent>())
-			{
-				const VelocityComponent& velocity = entity->GetComponent<VelocityComponent>();
-				Nz::Audio::SetListenerVelocity(velocity.linearVelocity);
-			}
+			// Compute listener velocity based on their old/new position
+			Nz::Vector3f velocity = (newPos - oldPos) / elapsedTime;
+			Nz::Audio::SetListenerVelocity(velocity);
 
 			activeListenerCount++;
 		}

SDK/src/NDK/Systems/RenderSystem.cpp

@@ -206,7 +206,7 @@ namespace Ndk
 			std::size_t visibilityHash = m_drawableCulling.Cull(camComponent.GetFrustum(), &forceInvalidation);
 
 			// Always regenerate renderqueue if particle groups are present for now (FIXME)
-			if (!m_particleGroups.empty())
+			if (!m_lights.empty() || !m_particleGroups.empty())
 				forceInvalidation = true;
 
 			if (camComponent.UpdateVisibility(visibilityHash) || m_forceRenderQueueInvalidation || forceInvalidation)

SDK/src/NDK/Widgets/ButtonWidget.cpp

@@ -30,13 +30,13 @@ namespace Ndk
 		m_gradientSprite->SetCornerColor(Nz::RectCorner_RightBottom, m_cornerColor);
 		m_gradientSprite->SetMaterial(Nz::Material::New("Basic2D"));
 
-		m_gradientEntity = CreateEntity();
+		m_gradientEntity = CreateEntity(false);
 		m_gradientEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_gradientEntity->AddComponent<GraphicsComponent>().Attach(m_gradientSprite);
 
 		m_textSprite = Nz::TextSprite::New();
 
-		m_textEntity = CreateEntity();
+		m_textEntity = CreateEntity(true);
 		m_textEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_textEntity->AddComponent<GraphicsComponent>().Attach(m_textSprite, 1);
 
@@ -82,12 +82,11 @@ namespace Ndk
 	{
 		BaseWidget::Layout();
 
+		m_gradientSprite->SetSize(GetSize());
+
 		Nz::Vector2f origin = GetContentOrigin();
 		const Nz::Vector2f& contentSize = GetContentSize();
 
-		m_gradientEntity->GetComponent<NodeComponent>().SetPosition(origin);
-		m_gradientSprite->SetSize(contentSize);
-
 		Nz::Boxf textBox = m_textEntity->GetComponent<GraphicsComponent>().GetBoundingVolume().obb.localBox;
 		m_textEntity->GetComponent<NodeComponent>().SetPosition(origin.x + contentSize.x / 2 - textBox.width / 2, origin.y + contentSize.y / 2 - textBox.height / 2);
 	}

SDK/src/NDK/Widgets/CheckboxWidget.cpp

@@ -28,19 +28,19 @@ namespace Ndk
 		m_checkboxContentSprite = Nz::Sprite::New(Nz::Material::New("Translucent2D"));
 		m_textSprite = Nz::TextSprite::New();
 
-		m_checkboxBorderEntity = CreateEntity();
+		m_checkboxBorderEntity = CreateEntity(false);
 		m_checkboxBorderEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_checkboxBorderEntity->AddComponent<GraphicsComponent>().Attach(m_checkboxBorderSprite);
 
-		m_checkboxBackgroundEntity = CreateEntity();
+		m_checkboxBackgroundEntity = CreateEntity(false);
 		m_checkboxBackgroundEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_checkboxBackgroundEntity->AddComponent<GraphicsComponent>().Attach(m_checkboxBackgroundSprite, 1);
 
-		m_checkboxContentEntity = CreateEntity();
+		m_checkboxContentEntity = CreateEntity(true);
 		m_checkboxContentEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_checkboxContentEntity->AddComponent<GraphicsComponent>().Attach(m_checkboxContentSprite, 2);
 
-		m_textEntity = CreateEntity();
+		m_textEntity = CreateEntity(true);
 		m_textEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_textEntity->AddComponent<GraphicsComponent>().Attach(m_textSprite);
 

SDK/src/NDK/Widgets/ImageWidget.cpp

@@ -11,7 +11,7 @@ namespace Ndk
 	ImageWidget::ImageWidget(BaseWidget* parent) :
 	BaseWidget(parent)
 	{
-		m_entity = CreateEntity();
+		m_entity = CreateEntity(true);
 		m_entity->AddComponent<NodeComponent>();
 		auto& gfx = m_entity->AddComponent<GraphicsComponent>();
 

SDK/src/NDK/Widgets/LabelWidget.cpp

@@ -13,13 +13,20 @@ namespace Ndk
 	{
 		m_textSprite = Nz::TextSprite::New();
 
-		m_textEntity = CreateEntity();
+		m_textEntity = CreateEntity(true);
 		m_textEntity->AddComponent<GraphicsComponent>().Attach(m_textSprite);
 		m_textEntity->AddComponent<NodeComponent>().SetParent(this);
 
 		Layout();
 	}
 
+	void LabelWidget::Layout()
+	{
+		BaseWidget::Layout();
+
+		m_textEntity->GetComponent<NodeComponent>().SetPosition(GetContentOrigin());
+	}
+
 	void LabelWidget::ResizeToContent()
 	{
 		SetContentSize(Nz::Vector2f(m_textSprite->GetBoundingVolume().obb.localBox.GetLengths()));

SDK/src/NDK/Widgets/ProgressBarWidget.cpp

@@ -1,4 +1,4 @@
-// Copyright (C) 2017 Samy Bensaid
+// Copyright (C) 2017 Samy Bensaid
 // This file is part of the "Nazara Development Kit"
 // For conditions of distribution and use, see copyright notice in Prerequisites.hpp
 
@@ -30,11 +30,11 @@ namespace Ndk
 		SetBarColor(s_barColor, s_barCornerColor);
 
 
-		m_borderEntity = CreateEntity();
+		m_borderEntity = CreateEntity(false);
 		m_borderEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_borderEntity->AddComponent<GraphicsComponent>().Attach(m_borderSprite);
 
-		m_barEntity = CreateEntity();
+		m_barEntity = CreateEntity(true);
 		m_barEntity->AddComponent<NodeComponent>().SetParent(this);
 		GraphicsComponent& graphics = m_barEntity->AddComponent<GraphicsComponent>();
 
@@ -43,7 +43,7 @@ namespace Ndk
 
 
 		m_textSprite = Nz::TextSprite::New();
-		m_textEntity = CreateEntity();
+		m_textEntity = CreateEntity(true);
 
 		m_textEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_textEntity->AddComponent<GraphicsComponent>().Attach(m_textSprite);

SDK/src/NDK/Widgets/TextAreaWidget.cpp

@@ -12,22 +12,20 @@ namespace Ndk
 	TextAreaWidget::TextAreaWidget(BaseWidget* parent) :
 	BaseWidget(parent),
 	m_echoMode(EchoMode_Normal),
-	m_cursorPosition(0U, 0U),
+	m_cursorPositionBegin(0U, 0U),
+	m_cursorPositionEnd(0U, 0U),
+	m_isMouseButtonDown(false),
 	m_multiLineEnabled(false),
 	m_readOnly(false)
 	{
-		m_cursorSprite = Nz::Sprite::New();
-		m_cursorSprite->SetColor(Nz::Color::Black);
-		m_cursorSprite->SetSize(1.f, float(m_drawer.GetFont()->GetSizeInfo(m_drawer.GetCharacterSize()).lineHeight));
-
-		m_cursorEntity = CreateEntity();
-		m_cursorEntity->AddComponent<GraphicsComponent>().Attach(m_cursorSprite, 10);
+		m_cursorEntity = CreateEntity(true);
+		m_cursorEntity->AddComponent<GraphicsComponent>();
 		m_cursorEntity->AddComponent<NodeComponent>().SetParent(this);
 		m_cursorEntity->Enable(false);
 
 		m_textSprite = Nz::TextSprite::New();
 
-		m_textEntity = CreateEntity();
+		m_textEntity = CreateEntity(true);
 		m_textEntity->AddComponent<GraphicsComponent>().Attach(m_textSprite);
 		m_textEntity->AddComponent<NodeComponent>().SetParent(this);
 
@@ -72,7 +70,29 @@ namespace Ndk
 		OnTextChanged(this, m_text);
 	}
 
-	std::size_t TextAreaWidget::GetHoveredGlyph(float x, float y) const
+	void TextAreaWidget::EraseSelection()
+	{
+		if (!HasSelection())
+			return;
+
+		std::size_t cursorGlyphBegin = GetGlyphIndex(m_cursorPositionBegin);
+		std::size_t cursorGlyphEnd = GetGlyphIndex(m_cursorPositionEnd);
+
+		std::size_t textLength = m_text.GetLength();
+		if (cursorGlyphBegin > textLength)
+			return;
+
+		Nz::String newText;
+		if (cursorGlyphBegin > 0)
+			newText.Append(m_text.SubString(0, m_text.GetCharacterPosition(cursorGlyphBegin) - 1));
+
+		if (cursorGlyphEnd < textLength)
+			newText.Append(m_text.SubString(m_text.GetCharacterPosition(cursorGlyphEnd)));
+
+		SetText(newText);
+	}
+
+	Nz::Vector2ui TextAreaWidget::GetHoveredGlyph(float x, float y) const
 	{
 		std::size_t glyphCount = m_drawer.GetGlyphCount();
 		if (glyphCount > 0)
@@ -88,7 +108,8 @@ namespace Ndk
 
 			std::size_t upperLimit = (line != lineCount - 1) ? m_drawer.GetLine(line + 1).glyphIndex : glyphCount + 1;
 
-			std::size_t i = m_drawer.GetLine(line).glyphIndex;
+			std::size_t firstLineGlyph = m_drawer.GetLine(line).glyphIndex;
+			std::size_t i = firstLineGlyph;
 			for (; i < upperLimit - 1; ++i)
 			{
 				Nz::Rectf bounds = m_drawer.GetGlyph(i).bounds;
@@ -96,10 +117,10 @@ namespace Ndk
 					break;
 			}
 
-			return i;
+			return Nz::Vector2ui(i - firstLineGlyph, line);
 		}
 
-		return 0;
+		return Nz::Vector2ui::Zero();
 	}
 
 	void TextAreaWidget::ResizeToContent()
@@ -109,7 +130,7 @@ namespace Ndk
 
 	void TextAreaWidget::Write(const Nz::String& text)
 	{
-		std::size_t cursorGlyph = GetGlyphIndex(m_cursorPosition);
+		std::size_t cursorGlyph = GetGlyphIndex(m_cursorPositionBegin);
 
 		if (cursorGlyph >= m_drawer.GetGlyphCount())
 		{
@@ -156,20 +177,27 @@ namespace Ndk
 		{
 			case Nz::Keyboard::Delete:
 			{
-				std::size_t cursorGlyph = GetGlyphIndex(m_cursorPosition);
+				if (HasSelection())
+					EraseSelection();
+				else
+				{
+					std::size_t cursorGlyphBegin = GetGlyphIndex(m_cursorPositionBegin);
+					std::size_t cursorGlyphEnd = GetGlyphIndex(m_cursorPositionEnd);
 
-				std::size_t textLength = m_text.GetLength();
-				if (cursorGlyph > textLength)
-					return true;
+					std::size_t textLength = m_text.GetLength();
+					if (cursorGlyphBegin > textLength)
+						return true;
 
-				Nz::String newText;
-				if (cursorGlyph > 0)
-					newText.Append(m_text.SubString(0, m_text.GetCharacterPosition(cursorGlyph) - 1));
+					Nz::String newText;
+					if (cursorGlyphBegin > 0)
+						newText.Append(m_text.SubString(0, m_text.GetCharacterPosition(cursorGlyphBegin) - 1));
 
-				if (cursorGlyph < textLength)
-					newText.Append(m_text.SubString(m_text.GetCharacterPosition(cursorGlyph + 1)));
+					if (cursorGlyphEnd < textLength)
+						newText.Append(m_text.SubString(m_text.GetCharacterPosition(cursorGlyphEnd + 1)));
+
+					SetText(newText);
+				}
 
-				SetText(newText);
 				return true;
 			}
 
@@ -181,10 +209,38 @@ namespace Ndk
 				if (ignoreDefaultAction)
 					return true;
 
+				if (HasSelection())
+					SetCursorPosition(m_cursorPositionEnd);
+
 				MoveCursor({0, 1});
 				return true;
 			}
 
+			case Nz::Keyboard::End:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyEnd(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				const auto& lineInfo = m_drawer.GetLine(m_cursorPositionEnd.y);
+				SetCursorPosition({ static_cast<unsigned int>(m_drawer.GetLineGlyphCount(m_cursorPositionEnd.y)), m_cursorPositionEnd.y });
+				return true;
+			}
+
+			case Nz::Keyboard::Home:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyHome(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				SetCursorPosition({ 0U, m_cursorPositionEnd.y });
+				return true;
+			}
+
 			case Nz::Keyboard::Left:
 			{
 				bool ignoreDefaultAction = false;
@@ -193,7 +249,11 @@ namespace Ndk
 				if (ignoreDefaultAction)
 					return true;
 
-				MoveCursor(-1);
+				if (HasSelection())
+					SetCursorPosition(m_cursorPositionBegin);
+				else
+					MoveCursor(-1);
+
 				return true;
 			}
 
@@ -205,7 +265,11 @@ namespace Ndk
 				if (ignoreDefaultAction)
 					return true;
 
-				MoveCursor(1);
+				if (HasSelection())
+					SetCursorPosition(m_cursorPositionEnd);
+				else
+					MoveCursor(1);
+
 				return true;
 			}
 
@@ -217,6 +281,9 @@ namespace Ndk
 				if (ignoreDefaultAction)
 					return true;
 
+				if (HasSelection())
+					SetCursorPosition(m_cursorPositionBegin);
+
 				MoveCursor({0, -1});
 				return true;
 			}
@@ -236,7 +303,40 @@ namespace Ndk
 		{
 			SetFocus();
 
-			SetCursorPosition(GetHoveredGlyph(float(x), float(y)));
+			const Padding& padding = GetPadding();
+			Nz::Vector2ui hoveredGlyph = GetHoveredGlyph(float(x - padding.left), float(y - padding.top));
+
+			// Shift extends selection
+			if (Nz::Keyboard::IsKeyPressed(Nz::Keyboard::LShift) || Nz::Keyboard::IsKeyPressed(Nz::Keyboard::RShift))
+				SetSelection(hoveredGlyph, m_selectionCursor);
+			else
+			{
+				SetCursorPosition(hoveredGlyph);
+				m_selectionCursor = m_cursorPositionBegin;
+			}
+
+			m_isMouseButtonDown = true;
+		}
+	}
+
+	void TextAreaWidget::OnMouseButtonRelease(int, int, Nz::Mouse::Button button)
+	{
+		if (button == Nz::Mouse::Left)
+			m_isMouseButtonDown = false;
+	}
+
+	void TextAreaWidget::OnMouseEnter()
+	{
+		if (!Nz::Mouse::IsButtonPressed(Nz::Mouse::Left))
+			m_isMouseButtonDown = false;
+	}
+
+	void TextAreaWidget::OnMouseMoved(int x, int y, int deltaX, int deltaY)
+	{
+		if (m_isMouseButtonDown)
+		{
+			const Padding& padding = GetPadding();
+			SetSelection(m_selectionCursor, GetHoveredGlyph(float(x - padding.left), float(y - padding.top)));
 		}
 	}
 
@@ -252,20 +352,30 @@ namespace Ndk
 				bool ignoreDefaultAction = false;
 				OnTextAreaKeyBackspace(this, &ignoreDefaultAction);
 
-				std::size_t cursorGlyph = GetGlyphIndex(m_cursorPosition);
-				if (ignoreDefaultAction || cursorGlyph == 0)
+				std::size_t cursorGlyphBegin = GetGlyphIndex(m_cursorPositionBegin);
+				std::size_t cursorGlyphEnd = GetGlyphIndex(m_cursorPositionEnd);
+
+				if (ignoreDefaultAction || cursorGlyphEnd == 0)
 					break;
 
-				Nz::String newText;
+				// When a text is selected, delete key does the same as delete and leave the character behind it
+				if (HasSelection())
+					EraseSelection();
+				else
+				{
+					Nz::String newText;
 
-				if (cursorGlyph > 1)
-					newText.Append(m_text.SubString(0, m_text.GetCharacterPosition(cursorGlyph - 1) - 1));
+					if (cursorGlyphBegin > 1)
+						newText.Append(m_text.SubString(0, m_text.GetCharacterPosition(cursorGlyphBegin - 1) - 1));
 
-				if (cursorGlyph < m_text.GetLength())
-					newText.Append(m_text.SubString(m_text.GetCharacterPosition(cursorGlyph)));
+					if (cursorGlyphEnd < m_text.GetLength())
+						newText.Append(m_text.SubString(m_text.GetCharacterPosition(cursorGlyphEnd)));
 
-				MoveCursor(-1);
-				SetText(newText);
+					// Move cursor before setting text (to prevent SetText to move our cursor)
+					MoveCursor(-1);
+
+					SetText(newText);
+				}
 				break;
 			}
 
@@ -287,6 +397,9 @@ namespace Ndk
 				if (Nz::Unicode::GetCategory(character) == Nz::Unicode::Category_Other_Control)
 					break;
 
+				if (HasSelection())
+					EraseSelection();
+
 				Write(Nz::String::Unicode(character));
 				break;
 			}
@@ -298,24 +411,68 @@ namespace Ndk
 		if (m_readOnly)
 			return;
 
-		const auto& lineInfo = m_drawer.GetLine(m_cursorPosition.y);
-		std::size_t cursorGlyph = GetGlyphIndex(m_cursorPosition);
+		m_cursorEntity->GetComponent<NodeComponent>().SetPosition(GetContentOrigin());
 
-		std::size_t glyphCount = m_drawer.GetGlyphCount();
-		float position;
-		if (glyphCount > 0 && lineInfo.glyphIndex < cursorGlyph)
+		std::size_t selectionLineCount = m_cursorPositionEnd.y - m_cursorPositionBegin.y + 1;
+		std::size_t oldSpriteCount = m_cursorSprites.size();
+		if (m_cursorSprites.size() != selectionLineCount)
 		{
-			const auto& glyph = m_drawer.GetGlyph(std::min(cursorGlyph, glyphCount - 1));
-			position = glyph.bounds.x;
-			if (cursorGlyph >= glyphCount)
-				position += glyph.bounds.width;
+			m_cursorSprites.resize(m_cursorPositionEnd.y - m_cursorPositionBegin.y + 1);
+			for (std::size_t i = oldSpriteCount; i < m_cursorSprites.size(); ++i)
+			{
+				m_cursorSprites[i] = Nz::Sprite::New();
+				m_cursorSprites[i]->SetMaterial(Nz::Material::New("Translucent2D"));
+			}
 		}
-		else
-			position = 0.f;
 
-		Nz::Vector2f contentOrigin = GetContentOrigin();
+		float lineHeight = float(m_drawer.GetFont()->GetSizeInfo(m_drawer.GetCharacterSize()).lineHeight);
 
-		m_cursorEntity->GetComponent<NodeComponent>().SetPosition(contentOrigin.x + position, contentOrigin.y + lineInfo.bounds.y);
+		GraphicsComponent& gfxComponent = m_cursorEntity->GetComponent<GraphicsComponent>();
+		gfxComponent.Clear();
+
+		for (unsigned int i = m_cursorPositionBegin.y; i <= m_cursorPositionEnd.y; ++i)
+		{
+			const auto& lineInfo = m_drawer.GetLine(i);
+
+			Nz::SpriteRef& cursorSprite = m_cursorSprites[i - m_cursorPositionBegin.y];
+			if (i == m_cursorPositionBegin.y || i == m_cursorPositionEnd.y)
+			{
+				auto GetGlyphPos = [&](unsigned int localGlyphPos)
+				{
+					std::size_t cursorGlyph = GetGlyphIndex({ localGlyphPos, i });
+
+					std::size_t glyphCount = m_drawer.GetGlyphCount();
+					float position;
+					if (glyphCount > 0 && lineInfo.glyphIndex < cursorGlyph)
+					{
+						const auto& glyph = m_drawer.GetGlyph(std::min(cursorGlyph, glyphCount - 1));
+						position = glyph.bounds.x;
+						if (cursorGlyph >= glyphCount)
+							position += glyph.bounds.width;
+					}
+					else
+						position = 0.f;
+
+					return position;
+				};
+
+				float beginX = (i == m_cursorPositionBegin.y) ? GetGlyphPos(m_cursorPositionBegin.x) : 0.f;
+				float endX = (i == m_cursorPositionEnd.y) ? GetGlyphPos(m_cursorPositionEnd.x) : lineInfo.bounds.width;
+				float spriteSize = std::max(endX - beginX, 1.f);
+
+				cursorSprite->SetColor((m_cursorPositionBegin == m_cursorPositionEnd) ? Nz::Color::Black : Nz::Color(0, 0, 0, 50));
+				cursorSprite->SetSize(spriteSize, float(m_drawer.GetFont()->GetSizeInfo(m_drawer.GetCharacterSize()).lineHeight));
+
+				gfxComponent.Attach(cursorSprite, Nz::Matrix4f::Translate({ beginX, lineInfo.bounds.y, 0.f }));
+			}
+			else
+			{
+				cursorSprite->SetColor(Nz::Color(0, 0, 0, 50));
+				cursorSprite->SetSize(lineInfo.bounds.width, float(m_drawer.GetFont()->GetSizeInfo(m_drawer.GetCharacterSize()).lineHeight));
+
+				gfxComponent.Attach(cursorSprite, Nz::Matrix4f::Translate({ 0.f, lineInfo.bounds.y, 0.f }));
+			}
+		}
 	}
 
 	void TextAreaWidget::UpdateDisplayText()
@@ -334,6 +491,6 @@ namespace Ndk
 
 		m_textSprite->Update(m_drawer);
 
-		SetCursorPosition(m_cursorPosition); //< Refresh cursor position (prevent it from being outside of the text)
+		SetCursorPosition(m_cursorPositionBegin); //< Refresh cursor position (prevent it from being outside of the text)
 	}
 }

SDK/src/NDK/World.cpp

@@ -11,6 +11,7 @@
 #include <NDK/Systems/VelocitySystem.hpp>
 
 #ifndef NDK_SERVER
+#include <NDK/Systems/DebugSystem.hpp>
 #include <NDK/Systems/ListenerSystem.hpp>
 #include <NDK/Systems/ParticleSystem.hpp>
 #include <NDK/Systems/RenderSystem.hpp>
@@ -47,6 +48,7 @@ namespace Ndk
 		AddSystem<VelocitySystem>();
 
 		#ifndef NDK_SERVER
+		AddSystem<DebugSystem>();
 		AddSystem<ListenerSystem>();
 		AddSystem<ParticleSystem>();
 		AddSystem<RenderSystem>();