Sdk/EntityList: Automatically remove entities from lists on destruction

SDK/include/NDK/Entity.inl

@@ -6,6 +6,7 @@
 #include <Nazara/Core/Error.hpp>
 #include <Nazara/Core/StringStream.hpp>
 #include <algorithm>
+#include <cassert>
 #include <type_traits>
 #include <utility>
 
@@ -257,11 +258,10 @@ namespace Ndk
 		return m_removedComponentBits;
 	}
 
-	/*!
-	* \brief Registers a system for the entity
-	*
-	* \param index Index of the system
-	*/
+	inline void Entity::RegisterEntityList(EntityList* list)
+	{
+		m_containedInLists.push_back(list);
+	}
 
 	inline void Entity::RegisterSystem(SystemIndex index)
 	{
@@ -289,6 +289,16 @@ namespace Ndk
 	* \param index Index of the system
 	*/
 
+	inline void Entity::UnregisterEntityList(EntityList* list)
+	{
+		auto it = std::find(m_containedInLists.begin(), m_containedInLists.end(), list);
+		assert(it != m_containedInLists.end());
+
+		// Swap and pop idiom
+		*it = m_containedInLists.back();
+		m_containedInLists.pop_back();
+	}
+
 	inline void Entity::UnregisterSystem(SystemIndex index)
 	{
 		m_systemBits.UnboundedReset(index);