Problems with synchronizationg networked vehicle

Questions & Answers
1

I am trying to make enterable networked vehicle using mirror. For now everything works exept synchronization. Client and server/host sees its own position of vehicle. Looks like its problem with authority (trying to send commands without authority ), this error shows in other clients that arent in vehicle. Authority is assigned to player who is in vehicle. I am using clientRPC to tell server to execute vehicle movement in all clients

vehicle controller:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Mirror;
public class car_controller : NetworkBehaviour
{
    public bool is_car_on = false;
    private float m_horizontal_input;
    private float m_vertical_input;
    private float m_sterring_angle;

    public WheelCollider fl_w, fr_w;
    public WheelCollider rl_w, rr_w;
    public Transform fl_t, fr_t;
    public Transform rl_t, rr_t;
    public float max_steer_angle = 30;
    public float motor_force = 50;

    [ClientRpc]
    public void RpcGet_input()
    {
        m_horizontal_input = Input.GetAxis("Horizontal");
        m_vertical_input = Input.GetAxis("Vertical");
        Debug.Log("sent to client");
    }
    [ClientRpc]
    private void RpcSteer()
    {
        m_sterring_angle = max_steer_angle * m_horizontal_input;
        fl_w.steerAngle = m_sterring_angle;
        fr_w.steerAngle = m_sterring_angle;
    }
    [ClientRpc]
    private void RpcAccelerate()
    {
        if (Input.GetKey("left shift"))
        {
            motor_force = 1300;
        }
        else
        {
            motor_force = 800;
        }

        if (is_car_on == true)
        {
            fl_w.motorTorque = m_vertical_input * motor_force;
            fr_w.motorTorque = m_vertical_input * motor_force;
        }


    }
    [ClientRpc]
    private void RpcUpdate_wheel_poses()
    {
        update_wheel_pose(fl_w, fl_t);
        update_wheel_pose(fr_w, fr_t);
        update_wheel_pose(rl_w, rl_t);
        update_wheel_pose(rr_w, rr_t);
    }




    private void update_wheel_pose(WheelCollider _collider, Transform _transform)
    {
        Vector3 _pos = _transform.position;
        Quaternion _quat = _transform.rotation;

        _collider.GetWorldPose(out _pos, out _quat);

        _transform.position = _pos;
        _transform.rotation = _quat;
    }



    private void FixedUpdate()
    {
        if (is_car_on == true)
        {
            CmdGet_input();
            CmdSteer();
            CmdAccelerate();
            CmdUpdate_wheel_poses();
        }

    }
   

    [Command]
    void CmdGet_input()
    {
        RpcGet_input();
        Debug.Log("sent to server");
    }
    [Command]
    void CmdSteer()
    {
        RpcSteer();
    }
    [Command]
    void CmdAccelerate()
    {
        RpcAccelerate();
    }
    [Command]
    void CmdUpdate_wheel_poses()
    {
        RpcUpdate_wheel_poses();
    }

}

assigning authority

void interact()
    {
        RaycastHit hit;
        if (Physics.Raycast(fps_cam.transform.position, fps_cam.transform.forward, out hit, range) && hit.collider.gameObject.name == "driver_seat_name")
        {
            
            

            if (GameObject.Find("basic_car").GetComponent<seatsController>().in_drivers_entrance == false)
            {
                if (Input.GetButtonDown("interact"))
                {
                    NetworkIdentity carIdentity = GameObject.Find("basic_car").GetComponent<NetworkIdentity>();
                    carAuth(carIdentity);
                    NetworkIdentity identity = NetworkClient.localPlayer.GetComponent<NetworkIdentity>();
                    playerIdentity = identity;
                    GameObject.Find("basic_car").GetComponent<seatsController>().CmdEnteringDriver(identity);
                   
                }
            }
        }
     
    }
    [Command]
    void carAuth(NetworkIdentity carIdentity)
    {
        carIdentity.AssignClientAuthority(connectionToClient);
    }
}
2

ok this is how I would do it so you get basic understanding I hope it works.I personally use TargetRpc witch needs a target that’s why it’s commented I think it needs to be passing variables like this

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Mirror;
public class car_controller : NetworkBehaviour
{
    public bool is_car_on = false;
    private float m_horizontal_input;
    private float m_vertical_input;
    private float m_sterring_angle;

    public WheelCollider fl_w, fr_w;
    public WheelCollider rl_w, rr_w;
    public Transform fl_t, fr_t;
    public Transform rl_t, rr_t;
    public float max_steer_angle = 30;
    public float motor_force = 50;



    private void update_wheel_pose(WheelCollider _collider, Transform _transform)
    {
        Vector3 _pos = _transform.position;
        Quaternion _quat = _transform.rotation;

        _collider.GetWorldPose(out _pos, out _quat);

        _transform.position = _pos;
        _transform.rotation = _quat;
    }
    [Client]
    private void FixedUpdate()
    {
        if (is_car_on == true)
        {
            CmdSet_input(this.gameObject, Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"));
            /*CmdSteer();
            CmdAccelerate();
            CmdUpdate_wheel_poses();
            */
        }
    }
    [Command]
    void CmdSet_input(GameObject Me, float h, float v)
    {
        car_controller car = Me.GetComponent<car_controller>();
        m_horizontal_input = h;
        m_vertical_input = v;
        RpcSet_input(/*car.netIdentity, */h, v);
        Debug.Log("sent to server");
    }





    [ClientRpc]
    public void RpcSet_input(/*NetworkConnection target, */float h, float v)
    {
        m_horizontal_input = h;
        m_vertical_input = v;
    }
}

I think that every function after [whatever] is treated as inside that’s why I moved those functions up there.

try if searing works and it it does than you know the basics to move forward

comment everything else to get basics

3

Pleased to see your issue as I think I have the same problem, I am also confused and in need of light on this same issue. Need help.

4

ok this is how I would do it so you get basic understanding I hope it works.I personally use TargetRpc witch needs a target that’s why it’s commented I think it needs to be passing variables like this

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Mirror;
public class car_controller : NetworkBehaviour
{
    public bool is_car_on = false;
    private float m_horizontal_input;
    private float m_vertical_input;
    private float m_sterring_angle;

    public WheelCollider fl_w, fr_w;
    public WheelCollider rl_w, rr_w;
    public Transform fl_t, fr_t;
    public Transform rl_t, rr_t;
    public float max_steer_angle = 30;
    public float motor_force = 50;



    private void update_wheel_pose(WheelCollider _collider, Transform _transform)
    {
        Vector3 _pos = _transform.position;
        Quaternion _quat = _transform.rotation;

        _collider.GetWorldPose(out _pos, out _quat);

        _transform.position = _pos;
        _transform.rotation = _quat;
    }
    [Client]
    private void FixedUpdate()
    {
        if (is_car_on == true)
        {
            CmdSet_input(this.gameObject, Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"));
            /*CmdSteer();
            CmdAccelerate();
            CmdUpdate_wheel_poses();
            */
        }
    }
    [Command]
    void CmdSet_input(GameObject Me, float h, float v)
    {
        car_controller car = Me.GetComponent<car_controller>();
        m_horizontal_input = h;
        m_vertical_input = v;
        RpcSet_input(/*car.netIdentity, */h, v);
        Debug.Log("sent to server");
    }





    [ClientRpc]
    public void RpcSet_input(/*NetworkConnection target, */float h, float v)
    {
        m_horizontal_input = h;
        m_vertical_input = v;
    }
}

I think that every function after [whatever] is treated as inside that’s why I moved those functions up there.

try if stearing works and it it does than you know the basics to move forward

comment everything else to get basics

In

[Command] functions only work on server on client they aren’t run

In

[Client Rpc]functions only work on clients

How to communicate

With parameters