Allow to store a behavior in a RBush (spatial data structure).
Because this duplicates the AABB, this ensures the RBush AABB
stays the same even if the underlying object is moved
(in which case the behavior is responsible for removing/adding
back/updating this BehaviorRBushAABB).
Allow to store a behavior in a RBush (spatial data structure). Because this duplicates the AABB, this ensures the RBush AABB stays the same even if the underlying object is moved (in which case the behavior is responsible for removing/adding back/updating this BehaviorRBushAABB).