SetBoundingBox doesn't set _size.

[SPapandreou]

Implementation of SetBoundingBox() in BoundingBox.cs should be like this:

   ```
     /// <summary>
    /// Configures the bounding box with the specified center and scope (half-size).
    /// </summary>
    public void SetBoundingBox(Vector3d center, Vector3d scope)
    {
        this._center = center;
        _scope = scope;
        _size = scope * (Fixed64)2;
        _min = this._center - Scope;
        _max = this._center + Scope;
        _isDirty = true;
    }
    ```

Without setting the size, the BoundingBox will deserialize with _min == _max == _center.
With changing it a bit, this can probably be optimized to remove the extra multiplication with 2.

[mrdav30]

nice catch and thanks for bringing this to my attention! I have an idea on how to resolve this and remove invariant bugs entirely.

[mrdav30]

@SPapandreou After digging back into the BoundingBox implementation, I found that the previous design had redundant internal state (center/size/scope/min/max). While it was working in most cases, it could become inconsistent — especially across certain serialization paths.

I’ve refactored BoundingBox to use a canonical min/max representation internally, which removes the dual-state risk entirely and simplifies serialization. Changes are in PR#42. Performance characteristics remain the same, and the structure is now more robust.

Really appreciate you taking the time to call this out — it led to a solid improvement in the library. Let me know if you notice anything else!

[SPapandreou]

Thanks! I probably will have more issues for you. I am building an actual deterministic physics system on top of your library. :-)

[mrdav30]

v1.3.4 released to resolve this issue.

@SPapandreou good luck! that's actually the reason I built this library. I was working on my own deterministic engine (LockstepRTSEngine is a very old iteration of it) and decided I needed to split everything out into it's own project as the monorepo was getting to much to manage. Currently working on a deterministic pathfinding framework using this and Gridforge.