How could I send three parameters?

Unity Engine
1

Hi

How could I send three parameters to a function into Game from Webpage?

gameInstance.SendMessage('myCube', 'myFunc', 'vroad', 0, 0, 0);

Thank You

2

I’m not really sure what you’re asking for. But the SendMessage method takes an Object parameter, so you could do this:

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {

    void Execute(string[] items) {
        Debug.Log(items[0]); // myCube
        Debug.Log(items[1]); // myFunc
        Debug.Log(items[2]); // vroad
    }

    void Example() {
        string[] parameters = new string[] { "myCube", "myFunc", "vroad" };
        gameObject.SendMessage("ApplyDamage", parameters);
    }
}
1 Like
3

Just as a heads-up, adding more tags to a thread, especially ones that are not relevant, won’t magically result in more people providing answers. You’ll just end up annoying the moderator who will have to remove the irrelevant ones.

4

So, I have a javascript code into my website and I need to send 4 strings together into the C# function.

My Javascript Function

<html>
<head>
<title></title>
</head>
<body>
function jsFunc()
      {

        gameInstance.SendMessage('myCube', 'callMyC#Function', 'myStringOne', 'myStringTwo', 'myStringThree', 'myStringFour',);

      }
    </script>
  </body>
</html>

My C# Function into Unity Game

void callMyC#Function(string wordOne, string wordTwo, string wordThree, string wordFour)
{

  //to do something here

}

Thank You

5

Do you want to make a server, or do you want every user to have their own game running together with a webbrowser?

6

Wrap them into a single parameter. Then on the Unity side unwrap them.

JSON is a typical format used for this purpose.

7

Edit: I’ve realized that WebGL already offers this feature, but using only one paremeter.
Like @Kiwasi said, you should simply convert the multiple objects to a single one.

You could use json, alternatively for simplicity you could also seperate each variable using comma’s.
If you want a complete solution here are the steps:

I’ve put together an application that runs a http server, in order to work using javascript.

Follow these steps in order to setup the server on runtime:

  1. Create an empty GameObject
  2. Add UnityMainThreadDispatcher.cs Component.
  3. Add UnityServer.cs Component.
  4. Run in unity and the server will be running.
  5. Load the localhost url and it will try to find the gameobject and the function in order to execute it.
    Note that all the parameters will be passed through as a string array. (string)

In order to run code in unity change the bolded text in the url, and send a HTTP GET Request: http://localhost:80/target=myCube&method=callMyCSharpFunction&params=myStringOne,myStringTwo,myStringThree,myStringFour

Heres an example of a remote executable script:

using UnityEngine;

public class CubeScript : MonoBehaviour {
    void callMyCSharpFunction(string[] args) {
        Debug.Log(string.Join(", ", args));
    }
}

Javascript example code:

function httpGetAsync(theUrl, callback) {
    var xmlHttp = new XMLHttpRequest();
    xmlHttp.onreadystatechange = function() {
        if (xmlHttp.readyState == 4 && xmlHttp.status == 200)
            callback(xmlHttp.responseText);
    }
    xmlHttp.open("GET", theUrl, true); // true for asynchronous
    xmlHttp.send(null);
}

var url = "http://localhost:80/target=myCube&method=callMyCSharpFunction&"
        + "params=myStringOne,myStringTwo,myStringThree,myStringFour";

httpGetAsync(url, (resp) => {
    if (resp == 'true') {
        console.log("Executed code on UnityServer.cs!");
    } else {
        console.log("Error occured on UnityServer.cs!");
    }
});

Scripts:

Sources:

1 Like
8

@Magiichan
Hello i just found that i can’t send more than one parameter to a Json Function so i did array of string to send to the function parameter

object[] tempStorage = new object[2];
                             tempStorage[0] = ExpName;
                             tempStorage[1] = ExpName + pdfName;
                        
                             Application.ExternalCall("OpenPDFUIButton", tempStorage);

in json file how to be able to separate those 2 values to get the value i want

function OpenPDFUIButton (expNameAndFileName)
{
var PName = “http://21.32.56/Virtual/Files/“+expName+”/”+expNameAndFileName;
}


as you can see i need to get expname and expnameAndFile name separately How can i achieve that ? , thanks .