I need an help with network variable (string)

Unity Engine
, , ,
1

I’m making my first multiplayer game. I want the player name to change and read on the screen, but
unity tells me that it is not possible to implicitly convert type ‘string’ to ‘Unity.Netcode.NetworkVariable ’. Please I need some help.
This is my code:

using UnityEngine;
using System.Collections;
using Unity.Netcode;
using Unity.Netcode.Components;
using Unity.Netcode.Transports;
using System;

public class SetupLocalPlayer : NetworkBehaviour {


    public NetworkVariable<string> pname;
    public NetworkObject cameraplace;

    void OnGUI()
    {
        if (IsLocalPlayer)
        {
            Camera.main.transform.position = cameraplace.transform.position;
            Camera.main.transform.rotation = cameraplace.transform.rotation;
            pname = GUI.TextField(new Rect(25, Screen.height - 40, 100, 30), pname);
            if (GUI.Button(new Rect(130, Screen.height - 40, 100, 30), "Change Name"))
            {
                CmdChangeName(pname);
            }
        }
    }
   
    [ServerRpc]
    public void CmdChangeName(string newName)
    {
        pname = newName;
    }

    void Start () {
        if (IsLocalPlayer)
            GetComponent<drive>().enabled = true;
    }
    void Update()
    {
        this.GetComponentInChildren<TextMesh>().text = pname.Value;
    }
}
2

You can no longer have a NetworkVariable of type string (although the documentation may still suggest otherwise). You can use a type such as FixedString64Bytes instead (NetworkVariable).

3 Likes
3

Be sure to import “using Unity.Collections” to use FixedString64Bytes

4

Hi @TheCreatorofSouth , as cerestorm mentioned you need to use a FixedString, like this:

using Unity.Collections;

public class SetupLocalPlayer : NetworkBehaviour
{
     NetworkVariable<FixedString128Bytes> pname = new NetworkVariable<FixedString128Bytes>();
}

The amount of bytes in the string depends on how big the string is supposed to be. 1 ASCII character = 1 byte and 1 UNICODE character = 2/3/4 bytes, so you can plan accordingly to the maximum length of your player’s name. (be mindful of oriental languages as well!)

5

You can use strings directly if you let Netcode know how to serialize it with UserNetworkVariableSerialization as mentioned here . There doesn’t seem to be any documentation explaining how to use it which would be useful.