Send data from unity to python socket

Questions & Answers
1

Hi,
i want to send data from unity to RPi 3 with Socket. i created an app with two joystick but i don’t know how to send the value of the joystick to the RPi 3 Python Socket.

Code Unity C# socket:

using UnityEngine;
using System.Collections;
using System;
using System.IO;
using System.Net.Sockets;

public class ClientSocket : MonoBehaviour
{

    bool socketReady = false;
    TcpClient mySocket;
    public NetworkStream theStream;
    StreamWriter theWriter;
    StreamReader theReader;
    public String Host = "192.168.1.70";
    public Int32 Port = 12345;

    void Start()
    {
        setupSocket();
    }


    public void setupSocket()
    {                            // Socket setup here
        try
        {
            mySocket = new TcpClient(Host, Port);
            theStream = mySocket.GetStream();
            theWriter = new StreamWriter(theStream);
            theReader = new StreamReader(theStream);
            socketReady = true;
        }
        catch (Exception e)
        {
            Debug.Log("Socket error:" + e);                // catch any exceptions
        }
    }
}

Code Unity C# Joystick:

using UnityEngine;
using UnityEngine.EventSystems;

public class FixedJoystick : Joystick
{
    Vector2 joystickPosition = Vector2.zero;
    private Camera cam = new Camera();

    void Start()
    {
        joystickPosition = RectTransformUtility.WorldToScreenPoint(cam, background.position);
    }

    public override void OnDrag(PointerEventData eventData)
    {
        Vector2 direction = eventData.position - joystickPosition;
        inputVector = (direction.magnitude > background.sizeDelta.x / 2f) ? direction.normalized : direction / (background.sizeDelta.x / 2f);
        ClampJoystick();
        handle.anchoredPosition = (inputVector * background.sizeDelta.x / 2f) * handleLimit;
    }

    public override void OnPointerDown(PointerEventData eventData)
    {
        OnDrag(eventData);
    }

    public override void OnPointerUp(PointerEventData eventData)
    {
        inputVector = Vector2.zero;
        handle.anchoredPosition = Vector2.zero;
    }
}

Code Python RPi 3:

import socket

backlog = 1
size = 1024
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('192.20.20.2', 50001))
s.listen(backlog)
try:
    print ("is waiting")
    client, address = s.accept()

    while 1:
        data = client.recv(size)
        if data:
            print (data)

except:
    print("closing socket")
    client.close()
    s.close()
2

hello, whats your problem? the phyton code not openning? the unity not connecting? the message not being send? you have gave no explanation. but for start i would suggest sending data since you have set up the socket but not used it.

public void TextMessage(string message)
{
    if (connected)
    {
            theWriter.Write(message);
            theWriter.Flush();
    }
}