Receive incoming position & rotation data as if it were parented differently on different clients?

Philipp

Hi! I have a drawing app where everyone in the area is looking at their virtual tablet screen. I already synchronize everyone's PhotonView pen which successfully leaves a trail, but it is it somehow possible to convert the incoming data so that it's always shown relative to the watching client's virtual tablet transform -- so that the relevant client will see all trails on one screen as if merged? (As if the object had a different parent on each client.)



(I tried IPunObservable + OnPhotonSerializeView, while ensuring the Pen is an observed PhotonView component, but it doesn't fire. I figured it would allow me to re-write the position & rotation values before they are applied, by converting them relative to each virtual tablet. But maybe this isn't even the right approach.) Thanks!

Philipp

I have it working now, commenting here for a future searcher's reference.

First of all, after adding IPunObservable to the MonoBehaviour, in this case my Pen, I still had to ensure I replaced in that Pen's PhotonView observed components list the existing PhotonTransformView with the Pen (to then delete the PhotonTransformView component).

Now in the pen, I can add something along these lines (not using lerp smoothing towards targets yet):

    public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
    {
        if (stream.IsWriting)
        {
            stream.SendNext(transform.position);
            stream.SendNext(transform.eulerAngles);
        }
        else
        {
            transform.position    = (Vector3) stream.ReceiveNext();
            transform.eulerAngles = (Vector3) stream.ReceiveNext();

            if (repositionSource != null && repositionTarget != null)
            {
                Transform oldParent = transform.parent;

                transform.parent = repositionSource;
                Vector3 localPosition = transform.localPosition;
                Vector3 localRotation = transform.localEulerAngles;
                
                transform.parent = repositionTarget;
                transform.localPosition    = localPosition;
                transform.localEulerAngles = localRotation;
                
                transform.parent = oldParent;
            }
        }
    }