Creating a car simulator in linux environment

Getting Started
1

Hi,

I am trying to build a simple car simulator for Ubuntu 14.04 that will take in inputs through UDP. If I use C# as the scripting language to call the UDP APIs, will the simulator able to be run in Ubuntu 14.04? If not, may I know how should I go about it to achieve it?

Thanks.

2

Sure, I don’t see why not.

3

Thanks for the prompt respond. In fact, these few days I have been trying to work on the networking end on unity. Although there was no error in the connection creation, I was not able to send a packet out as it stated that there is a Wrong Connection fault. May I know what is it that is causing this error?

I have modified the roll a ball tutorial (the script under PlayerController.cs) to do my testing.

The modified code was attached for reference.

Thanks.

public struct data_t
{
    public double x;
    public double y;

    public byte[] Serialise()
    {
        byte[] arr;
        MemoryStream ms = new MemoryStream();
        arr = System.BitConverter.GetBytes(this.x);
        ms.Write(arr, 0, arr.Length);

        arr = System.BitConverter.GetBytes(this.y);
        ms.Write(arr,0,arr.Length);

        arr = ms.ToArray();
        return arr;
    }
}

public class PlayerController : MonoBehaviour {

    public float speed;
    public Text countText;
    public Text winText;
    public Text statusText;

    private Rigidbody rb;
    private int count;

    private int reliableChannelId;
    private int hostId;
    private int connectionId;
    private ConnectionConfig  connectionConfig;
    private HostTopology topology;

    // Use this for initialization
    void Start ()
    {
        rb = GetComponent<Rigidbody> (); 
        count = 0;
        SetCountText ();
        winText.text = "";

        // Initializing the Transport Layer with no arguments (default settings)
        NetworkTransport.Init();

        // Configuring
        connectionConfig = new ConnectionConfig();
        reliableChannelId = connectionConfig.AddChannel (QosType.Unreliable);

        // Topology
        topology = new HostTopology (connectionConfig, 10);

        // Host creation
        hostId = NetworkTransport.AddHost(topology, 10000);

        // Connection id creation
        byte error;
        connectionId = NetworkTransport.Connect(hostId, "127.0.0.1", 10000, 0, out error);

        switch ((NetworkError)error)
        {
        case NetworkError.Ok:
            statusText.text = "Connection Ok!!";
//            statusText.text = connectionId.ToString();
            break;
        default:
            statusText.text = "Error!!";
            break;
        }
    }
 
    // Update is called once per frame (before rendering a frame)
    // This is also where most of our game code will go
    void Update ()
    {
        data_t pose;
        pose.x = 10.0;
        pose.y = 20.0;

        byte err = 0;
        byte[] buffer = pose.Serialise();
        NetworkTransport.Send (hostId, connectionId, reliableChannelId, buffer, buffer.Length, out err);

        switch ((NetworkError)err)
        {
        case NetworkError.Ok:
            statusText.text = "Ok!!";
            break;
        case NetworkError.WrongHost:
            statusText.text = "Wrong host!!";
            break;
        case NetworkError.WrongConnection:
            statusText.text = "Wrong connection!!";
            break;
        default:
            statusText.text = "Error!!";
            break;
        }
//        statusText.text = buffer.Length.ToString();
    }
}