Core/EnttWorld: Add RemoveSystem method

include/Nazara/Core/EnttSystemGraph.hpp

@@ -30,6 +30,8 @@ namespace Nz
 
 			template<typename T> T& GetSystem() const;
 
+			template<typename T> void RemoveSystem();
+
 			void Update();
 			void Update(Time elapsedTime);
 

include/Nazara/Core/EnttSystemGraph.inl

@@ -71,6 +71,18 @@ namespace Nz
 		auto& node = static_cast<Node<T>&>(*m_nodes[it->second]);
 		return node.system;
 	}
+
+	template<typename T>
+	void EnttSystemGraph::RemoveSystem()
+	{
+		auto it = m_systemToNodes.find(entt::type_hash<T>());
+		if (it == m_systemToNodes.end())
+			return;
+
+		m_nodes.erase(m_nodes.begin() + it->second);
+		m_systemToNodes.erase(it);
+		m_systemOrderUpdated = false;
+	}
 }
 
 #include <Nazara/Core/DebugOff.hpp>

include/Nazara/Core/EnttWorld.hpp

@@ -30,6 +30,8 @@ namespace Nz
 			const entt::registry& GetRegistry() const;
 			template<typename T> T& GetSystem() const;
 
+			template<typename T> void RemoveSystem();
+
 			void Update(Time elapsedTime) override;
 
 			operator entt::registry&();

include/Nazara/Core/EnttWorld.inl

@@ -38,6 +38,12 @@ namespace Nz
 		return m_systemGraph.GetSystem<T>();
 	}
 
+	template<typename T>
+	void EnttWorld::RemoveSystem()
+	{
+		return m_systemGraph.RemoveSystem<T>();
+	}
+
 	inline EnttWorld::operator entt::registry&()
 	{
 		return m_registry;