holofix.cs

public override void SetNameTag(string nameTag)
{
    NameTag = nameTag;

    var remove = McpeRemoveEntity.CreateObject();
    remove.entityIdSelf = EntityId;

    Level.RelayBroadcast(remove);

    var add = McpeAddPlayer.CreateObject();
    add.uuid = ClientUuid;
    add.username = nameTag;
    add.entityIdSelf = EntityId;
    add.runtimeEntityId = EntityId;
    add.x = KnownPosition.X;
    add.y = KnownPosition.Y;
    add.z = KnownPosition.Z;
    add.yaw = KnownPosition.Yaw;
    add.headYaw = KnownPosition.HeadYaw;
    add.pitch = KnownPosition.Pitch;
    add.metadata = GetMetadata();

    Level.RelayBroadcast(add);
}