(SceneNode) Added virtual constructor idiom

(Light) Added default constructor


Former-commit-id: 591e6a8435d2cea6238e70c0058d381b8d547f3e

src/Nazara/Graphics/Light.cpp

@@ -47,6 +47,16 @@ void NzLight::AddToRenderQueue(NzAbstractRenderQueue* renderQueue) const
 	renderQueue->AddLight(this);
 }
 
+NzLight* NzLight::Clone() const
+{
+	return new NzLight(*this);
+}
+
+NzLight* NzLight::Create() const
+{
+	return new NzLight;
+}
+
 void NzLight::Enable(const NzShader* shader, const NzLightUniforms& uniforms, int offset) const
 {
 	/*

src/Nazara/Graphics/Model.cpp

@@ -66,6 +66,16 @@ void NzModel::AddToRenderQueue(NzAbstractRenderQueue* renderQueue) const
 	}
 }
 
+NzModel* NzModel::Clone() const
+{
+	return new NzModel(*this);
+}
+
+NzModel* NzModel::Create() const
+{
+	return new NzModel;
+}
+
 NzMaterial* NzModel::GetMaterial(const NzString& subMeshName) const
 {
 	#if NAZARA_GRAPHICS_SAFE

src/Nazara/Graphics/SceneRoot.cpp

@@ -30,6 +30,18 @@ bool NzSceneRoot::IsDrawable() const
 	return true;
 }
 
+NzSceneRoot* NzSceneRoot::Clone() const
+{
+	NazaraInternalError("SceneNode::Clone() called on SceneRoot");
+	return nullptr;
+}
+
+NzSceneRoot* NzSceneRoot::Create() const
+{
+	NazaraInternalError("SceneNode::Create() called on SceneRoot");
+	return nullptr;
+}
+
 void NzSceneRoot::MakeBoundingVolume() const
 {
 	m_boundingVolume.MakeInfinite();

src/Nazara/Graphics/Sprite.cpp

@@ -48,6 +48,16 @@ void NzSprite::AddToRenderQueue(NzAbstractRenderQueue* renderQueue) const
 	renderQueue->AddSprites(m_material, m_vertices, 1);
 }
 
+NzSprite* NzSprite::Clone() const
+{
+	return new NzSprite(*this);
+}
+
+NzSprite* NzSprite::Create() const
+{
+	return new NzSprite;
+}
+
 const NzColor& NzSprite::GetColor() const
 {
 	return m_color;

src/Nazara/Graphics/TextSprite.cpp

@@ -65,6 +65,16 @@ void NzTextSprite::Clear()
 	m_vertices.clear();
 }
 
+NzTextSprite* NzTextSprite::Clone() const
+{
+	return new NzTextSprite(*this);
+}
+
+NzTextSprite* NzTextSprite::Create() const
+{
+	return new NzTextSprite;
+}
+
 const NzColor& NzTextSprite::GetColor() const
 {
 	return m_color;