WebPlayer - get url parameters into Unity

Unity Engine
1

I’ve read all the documentation here:
http://unity3d.com/support/documentation/Manual/Web%20Player%20Deployment.html
and I’ve searched for help, but found none of satisfaction.

My request is simple. I want to pick out some arguments from the html and send them to unity. For example:

http://foo.com/loadgame.php?myvar=mytest

Then in the php file, i can extract the value of myvar, echo some javascript, for instance:

var unity = unityObject.getObjectById("UnityContent");
unity.SendMessage("MyClass", "SetVar", "mytest");

…but it just doesn’t work.

I want this myvar into my unity game, but how exactly?

2

The Unity Web Player and browser communication will be your greatest reference.

In the web page code, you will need to add some information to it. As below.

<script>
var unity = unityObject.getObjectById("UnityContent");
</script>

<input type="button" value="Press Me" onClick="unity.SendMessage('GUI', 'ChangeText', 'Hello from a web page!');"/>

So this says, that in Unity, we are looking for an object named “GUI” That object has a script attached to it. The name of the script is not important. That script then has to have a function called “ChangeText” that accepts a String variable.

var MyText : String="Hello World!";

function OnGUI () {
	GUI.Label (Rect (10, 10, 100, 20), MyText);
	if (GUI.Button(Rect(10,35,50,20),"Set Text"))
		MyText="Hello World!";
}

function ChangeText(str : String){
	MyText=str;
}
3

Hi and thanks for the effort BigMisterB. However, it’s a little off from what I wanted here. Your example code I fully understand, but it is not what I am seeking here

Like I said, I already read that page you linked to, and all under that section. Nothing there (by example) tells of getting parameters from the url to the game.

For example, if I want to link to my game and add some parameters in the url to use in the game. That is what I actually need.

I’m thinking SendMessage from javascript needs to be run after the app is loaded, but how to do it?

4

After a lot of more reading and trial and error I managed to solve this with PHP and Application.srcValue. I documented my result here:

http://answers.unity3d.com/questions/5220/how-can-you-send-variables-to-unity3d-from-the-url

5

Is this valid for unity 3 ? cause I can’t make it work, only works for web publishing in Unity 2.6

6

worked fine for me in 3.2 a month or so ago. :wink:

7

I’ve been looking for this myself too and it took a bit of googling and experimenting, but I found a way to do this very easily, and without having to adjust the HTML file (which is convenient, especially if you have no other reasons to modify the HTML file).

I created a class RequestParameters.cs and made it available public domain on my company’s blog (as a little New Year’s present to the community :)):
previewlabs.com/reading-url-parmeters-from-web-player-builds

Simply add it to any GameObject in your scene, and call the string GetValue(string key) method.

2 Likes
8

bernardfrancois you are 3 years late

9

I know; found this thread as I was looking for a canned solution myself but didn’t find one.

I don’t think my reply will still be useful for the people higher in the thread, but others looking for a solution may end up in this thread and find it useful.

Happy New Year :slight_smile:

10

Thanks Bernard, exactly what I was looking for!

11

Really useful!