Method ReparentEntity

Engine/source/EtFramework/ECS/EcsController.cpp:183–217

------------------------------- EcsController::ReparentEntity Change what parent an entity is linked to, also moving all of its children - if the parent is not set to INVALID_ENTITY_ID, the entity is linked to the parent and placed in the layer below

//  - if the parent is not set to INVALID_ENTITY_ID, the entity is linked to the parent and placed in the layer below
//
void EcsController::ReparentEntity(T_EntityId const entity, T_EntityId const newParent)
{
	// get referred entity
	EntityData& ent = m_Entities[entity];

	// remove from current parent
	RemoveEntityFromParent(entity, ent.parent);

	std::vector<RawComponentPtr> components;
	T_CompTypeList compTypes = GetComponentsAndTypes(ent, components);

	// add to new parent, and get new layer
	ent.parent = newParent;
	if (ent.parent != INVALID_ENTITY_ID)
	{
		EntityData& parentEnt = m_Entities[ent.parent];
		parentEnt.children.push_back(entity);

		ent.layer = parentEnt.layer + 1u;
	}
	else
	{
		ent.layer = 0u;
	}

	// #todo: handle cases in which the hierachy level didn't change
	// the archetype will have the same signature but reside on a new hierachy layer
	MoveArchetype(entity, ent, compTypes, components);

	// recursively reparent children to match hierachy layers
	for (T_EntityId const childId : ent.children)
	{
		ReparentEntity(childId, entity);
	}
}

//-----------------------------
// EcsController::RemoveEntity