Player spawns at old position for a single frame on clients

[daalen]

The clients have authority over their own players' transform. When a player dies, I disable the player object, set it to a new spawn position, and after a few seconds activate it again to have the player respawn. The position is set on both the controlling client and the server (rigidbody position too) with the teleport flag on. When interpolation on the networktransforms is off, everything works. When it is on, something weird happens on the clients that do not control the player: when reactivating the gameobject, the player appears where they died for a frame or so, and then is quickly interpolated to the correct spawn position. The server just sees it at the new spawn position like it should.

How can I avoid the player appearing at their old position when reactivating the gameobject? While inactive, it's in the correct (new) position, but somehow it shifts back for a tick when activated.

If I delay reactivating the gameobject on other clients by 0.1 seconds, it all works without this weird effect, but this is an uncomfortable hacky solution to me.

[NoelStephensUnity]

Hi @daalen,
Are you despawning the player or just setting it to be inactive? If you are just setting it to be inactive, then I would recommend despawning using NetworkObject.Despawn(false); and then respawning the NetworkObject after having re-positioned it.

[daalen]

I'm not despawning it, because I have a load of references set up from and to the player that take some back-and-forth Rpcs at the initial spawn.

[NoelStephensUnity]

@daalen
When you respawn the player, do you teleport it to the new spawn location?

It would look something like this:

public class MyPlayerObject : NetworkBehaviour
{
    private NetworkTransform m_NetworkTransform;

    private void Awake()
    {
        m_NetworkTransform = GetComponent<NetworkTransform>();
    }

    public void OnPlayerSpawn(Vector3 spawnPoint)
    {
        m_NetworkTransform.SetState(posIn: spawnPoint, teleportDisabled: false);
    }
}

The above is just "pseudo" code, but the idea is to teleport the player to the new location to avoid interpolating to the position. You would want to do this prior to re-enabling the visual portions of the player so by the time you update that state of the player it will already be in the proper location.

[daalen]

Yes, that is indeed similar to what I did. I no longer see the issue however, I'm not sure what solved it. I think it may have had to do with the exclusive fullscreen issue, see #3198.

[NoelStephensUnity]

Ahhh... well glad your issue is resolved.
I am going to close out this issue at this time.