Get values from another script

Scripting
1

I have tried other solutions and using them i have come this far…

public string getLatestUDPPacket()
    {
        //allReceivedUDPPackets="";
        lastReceivedLeft ="";
        lastReceivedRight= "";

        return lastReceivedLeft += "";
        return lastReceivedRight += "";
    }

This is a function in UDPDualReceive.cs i want to get these values in another script named Controller.cs

    GameObject HatSprite = GameObject.Find ("HatSprite");

     UDPDualReceive ReceiveLeft = HatSprite.GetComponent<UDPDualReceive>().getLatestUDPPacket();
     string Leftvalue = ReceiveLeft.lastReceivedLeft;

tried above code and able to see lastReceivedLeft variable. But every time i get error Cannot implicitly convert string to UDPDualReceive

2

You are trying to return twice in the same block. The return “lastReceivedRight” is unreachable.

3

you are getting
Cannot implicitly convert string to UDPDualReceive
because of this line. UDPDualReceive is not a string. it’s a UDPDualReceive.
getLatestUDPPacket() returns a string

change the line to
string ReceiveLeft = HatSprite.GetComponent().getLatestUDPPacket

and Malleck666 is correct, you’ll never get to lastReceivedRight

4

Thanks for replying…actually i m receiving both the values in the inspector as i am maintaining using threads…I just want to use these values for motion of a game object.
@johne5 whenever i replace UDPDualReceive with string

 string Leftvalue = ReceiveLeft.lastReceivedLeft

I get system.string could not find lastReceived error…
Can you tell me any way i can get both the variables from other script?

5

sure, just create 2 public function.
The code you provided is always returning a blank string, so that may be the main issue you’re having

public string getLastRecievedLeft()
    {
        //return lastReceivedLeft = ""; // is blank
        //try this
        return lastReceivedLeft;
    }

public string getLastRecievedRight()
    {
        //return lastReceivedRight = ""; // is blank
        //try this
        return lastReceivedRight;
    }

call it via

string ReceiveLeft = HatSprite.GetComponent<UDPDualReceive>().getLastRevievedLeft();

string ReceiveRight = HatSprite.GetComponent<UDPDualReceive>().getLastRevievedRight();
6

Just came to know…thanks to @Malleck666 for pointing it out i am not receiving right value and @johne5 thanks to you too. now i am completely disappointed how to get data over 2 ports iam posting my entire code…please help me out.I am totally stuck…

 /*
        -----------------------
        UDP-Receive (send to)
        -----------------------
        // [url]http://msdn.microsoft.com/de-de/library/bb979228.aspx#ID0E3BAC[/url]
        // > receive
        // 127.0.0.1 : 8051
      
        // send
        // nc -u 127.0.0.1 8051
    
    */
using UnityEngine;
using System.Collections;

using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;

public class UDPDualReceive : MonoBehaviour {

    // receiving Thread
    //    Thread receiveThread;
    Thread LeftData;
    Thread RightData;

    // udpclient object
    UdpClient client1;
    UdpClient client2;

    // public
    // public string IP = "127.0.0.1"; default local
    public int port1; // define > init
    public int port2;

    // infos
    public string lastReceivedLeft="";
    public string lastReceivedRight=""; // clean up this from time to time!

    // start from shell
    private static void Main()
    {
        UDPDualReceive receiveObj1=new UDPDualReceive();
        UDPDualReceive receiveObj2=new UDPDualReceive();
        receiveObj1.init(33555);
        receiveObj2.init (33557);

        string text="";
        do
        {
            text = Console.ReadLine();
        }
        while(!text.Equals("exit"));
    }
    // start from unity3d
    public void Start()
    {
        init(33555);
        init (33557);
    }

    // OnGUI
    void OnGUI()
    {
        Rect rectObj=new Rect(40,10,200,400);
        GUIStyle style = new GUIStyle();
        style.alignment = TextAnchor.UpperLeft;
        GUI.Box(rectObj,"# UDPLeftReceive\n127.0.0.1 "+port1+" #\n"
            + "shell> nc -u 127.0.0.1 : "+port1+" \n"
            + "\nLast Packet: \n"+ lastReceivedLeft
            + "\n\nAll Messages: \n"+lastReceivedLeft
            ,style);
        GUI.Box(rectObj,"# UDPRightReceive\n127.0.0.1 "+port2+" #\n"
            + "shell> nc -u 127.0.0.1 : "+port2+" \n"
            + "\nLast Packet: \n"+ lastReceivedRight
            + "\n\nAll Messages: \n"+lastReceivedRight
            ,style);
    }


    // init
    private void init(int port)
    {
      
        print("UDPSend.init()");

        // define port
        //port1= 33555;
        //port2 = 33557;

        // status
        print("Sending to 127.0.0.1 : "+port);
        print("Test-Sending to this Port: nc -u 127.0.0.1  "+port+"");

        LeftData= new Thread(new ThreadStart(ReceiveLeftData));
        RightData = new Thread(new ThreadStart(ReceiveRightData));
        LeftData.IsBackground = true;
        RightData.IsBackground = true;
        LeftData.Start();
        RightData.Start ();

    }
    // receive thread
    private void ReceiveLeftData()
    {
        client1= new UdpClient(port1);

        while (true)
        {
            try
            {
                // Bytes empfangen.
                IPEndPoint anyIP = new IPEndPoint(IPAddress.Any, 61556);
                byte[] data1 = client1.Receive(ref anyIP);
                //byte[] data2 = client1.Receive(ref anyIP);
               
                string text1 = Encoding.UTF8.GetString(data1);

                 // latest UDPpacket
                lastReceivedLeft=text1;
                print("Left_data:11"+ lastReceivedLeft);

            }
            catch (Exception err)
            {
                print(err.ToString());
            }

        }
    }

    private void ReceiveRightData()
    {
        client1 = new UdpClient (port2);
        while (true)
        {
            try
            {
                // Bytes empfangen.
                IPEndPoint anyIP = new IPEndPoint(IPAddress.Any, 61558);
                byte[] data2 = client1.Receive(ref anyIP);


                //string text1 = Encoding.UTF8.GetString(data1);
                string text2 = Encoding.UTF8.GetString(data2);
                lastReceivedRight = text2;
            

                // latest UDPRightpacket
                print("Right_data:"+lastReceivedRight);

                //allReceivedUDPPackets=allReceivedUDPPackets+text;
                //return lastReceivedRight;
            }
            catch (Exception err)
            {
                print(err.ToString());
            }
        }
    }

    // getLatestUDPPacket
    // cleans up the rest
    public string getLatestUDPPacket()
    {
        //allReceivedUDPPackets="";

        return lastReceivedLeft += "";
        return lastReceivedRight += "";   
    }
}
7 
using UnityEngine;
using System.Collections;
using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;
public class UDPDualReceive : MonoBehaviour {
    // receiving Thread
    //    Thread receiveThread;
    Thread LeftData;
    Thread RightData;
    // udpclient object
    UdpClient client1;
    UdpClient client2;
    // public
    // public string IP = "127.0.0.1"; default local
    public int port1; // define > init
    public int port2;
    // infos
//these are public so that means you can access them from other scripts.
    public string lastReceivedLeft = ""; // Start with a blank string
    public string lastReceivedRight = ""; // Start with a blank string

    // start from shell, I don't see this function being used : main()
    private static void Main()
    {
        UDPDualReceive receiveObj1=new UDPDualReceive();
        UDPDualReceive receiveObj2=new UDPDualReceive();
        receiveObj1.init(33555);
        receiveObj2.init (33557);
        string text="";
        do
        {
            text = Console.ReadLine(); //this does nothing but print out the text so you can view it.  it does not store it.
        }
        while(!text.Equals("exit"));
    }

    // start from unity3d
    public void Start()
    {
        init(33555);
        init (33557);
    }
    // OnGUI
    void OnGUI()
    {
        Rect rectObj=new Rect(40,10,200,400);
        GUIStyle style = new GUIStyle();
        style.alignment = TextAnchor.UpperLeft;
        GUI.Box(rectObj,"# UDPLeftReceive\n127.0.0.1 "+port1+" #\n"
            + "shell> nc -u 127.0.0.1 : "+port1+" \n"
            + "\nLast Packet: \n"+ lastReceivedLeft
            + "\n\nAll Messages: \n"+lastReceivedLeft
            ,style);
        GUI.Box(rectObj,"# UDPRightReceive\n127.0.0.1 "+port2+" #\n"
            + "shell> nc -u 127.0.0.1 : "+port2+" \n"
            + "\nLast Packet: \n"+ lastReceivedRight
            + "\n\nAll Messages: \n"+lastReceivedRight
            ,style);
    }
    // init
    private void init(int port)
    {
        print("UDPSend.init()");
        LeftData= new Thread(new ThreadStart(ReceiveLeftData));
        RightData = new Thread(new ThreadStart(ReceiveRightData));
        LeftData.IsBackground = true;
        RightData.IsBackground = true;
        LeftData.Start();
        RightData.Start ();
    }
    // receive thread
    private void ReceiveLeftData()
    {
        client1= new UdpClient(port1);
        while (true)
        {
            try
            {
                // Bytes empfangen.
                IPEndPoint anyIP = new IPEndPoint(IPAddress.Any, 61556);
                byte[] data1 = client1.Receive(ref anyIP);
                //byte[] data2 = client1.Receive(ref anyIP);
              
                string text1 = Encoding.UTF8.GetString(data1);
                 // latest UDPpacket
                lastReceivedLeft = text1; // this is the part that stores a received string the the lastReceivedLeft string.
            }
            catch (Exception err)
            {
                print(err.ToString());
            }
        }
    }
    private void ReceiveRightData()
    {
        client1 = new UdpClient (port2);
        while (true)
        {
            try
            {
                // Bytes empfangen.
                IPEndPoint anyIP = new IPEndPoint(IPAddress.Any, 61558);
                byte[] data2 = client1.Receive(ref anyIP);
                string text2 = Encoding.UTF8.GetString(data2);
                lastReceivedRight = text2; // again this the part that is storing the string
          

            }
            catch (Exception err)
            {
                print(err.ToString());
            }
        }
    }
    // getLatestUDPPacket
    // cleans up the rest
// i'm not sure why you have this.  but nothing is calling it,  so thats good.
    public string getLatestUDPPacket()
    {
        //allReceivedUDPPackets="";
        return lastReceivedLeft += "";
        return lastReceivedRight += ""; 
    }
}
8

in the second script

public GameObject HatSprite;

void Update()
{
string ReceiveLeft = HatSprite.GetComponent<UDPDualReceive>().lastReceivedLeft;
//debug to show in unity
Debug.Log("Second script : " + ReceiveLeft);
}
9

Thank you this solved my issue. Thanks @johne5 and @Malleck666

10

one last help needed @johne5 can you help? I am able to receive all the data…

        ReceiveLeft = HatSprite.GetComponent<UDPDualReceive>().lastReceivedLeft;
        LeftValue = float.Parse (ReceiveLeft);

i am getting float values… i have tried TryParse too but the above code always gives incorrect format exception…
as in the above complete script i am getting data in the form of string i want to typecast/parse into float so as to get the calculations done…

11 
float LeftValue = 0; /// default value
    if(float.TryParse(ReceiveLeft, out LeftValue))
    {
        /// everything is ok
        Debug.Log(LeftValue);
    }
    else
    {
        /// something wrong. has incorrect float value
    }