Preallocating after entities have been created results in corrupting the entity reference table. about svelto.ecs HOT 2 CLOSED

this actually makes sense because with the preallocation you are changing the size of the sets which invalidates the entity references because the indices will change.

With some effort I may be able to update the references during a preallocation, but it's not the way to go. By definition preallocation shouldn't be called on an already allocated group, so I am going to add an exception when this happens.

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ok changed the code to throw an exception if preallocation is called when entities are already submitted

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