How to change parent for an entity

Unity Engine
, ,
1

Hi

I am having some strange issues coming from the ParentSystem while i am trying to change parents for some entities.
InvalidOperationException: Child entity not in parent

What is the best way to change the parent of an entity and remove a parent completely?

At the moment this is what i am doing

A) set Parent and PreviousParent data to PARENT B
B) Rebuild Child and LinkedEntityGroup buffers for both PARENT A and PARENT B

This is how i remove entities from a Parent

 Game.Instance.EntityWorld.EntityManager.RemoveComponent<Parent>(localEntity);
        Game.Instance.EntityWorld.EntityManager.RemoveComponent<LocalToParent>(localEntity);
        Game.Instance.EntityWorld.EntityManager.RemoveComponent<PreviousParent>(localEntity);

Rebuild Child and LinkedEntityGroup buffers

this is where it crashes in parentsystem as well

2

Don’t touch PreviousParent and Child buffers. Those are system state and you should let the system clean those up for you.

1 Like
3

ok thank you!
so only update the Parent data and the LinkedEntityGroup buffer