Browser to Unity WebGL communication

Question

How do we pass messages into Unity WebGL apps from browser javascript? I know the syntax for the UNITY_WEB plugin is

 u.getUnity().SendMessage("MyGameObject","MyFunction", "SomeValue");

What is the syntax for sending a message to UNITY_WEBGL from browser javascript?

Answer 1

Best Answer

Answer by gstier · Nov 11, 2014 at 05:38 PM

I'm using Unity 5b12. In UnityConfig.js there is a SendMessage function. The WebGL build automatically includes this in the build.

So just change:

 u.getUnity().SendMessage("MyGameObject","MyFunction", "SomeValue");

to:

 SendMessage("MyGameObject","MyFunction", "SomeValue");

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clintomed · Jun 10, 2015 at 04:37 AM 0

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The Send$$anonymous$$essage function seems to now be gone from UnityConfig. Anyone have a new solution? Am I missing something?

rameshkumar · Jun 10, 2015 at 07:01 AM 0

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can you explain the parameter which is passing inside the "Send$$anonymous$$essage" function ,"$$anonymous$$yGameObject" * .

Answer 2

Answer by azporispo · Jul 30, 2015 at 08:50 AM

I was able to call a function from my a gameobject in my scene from my javascript code.

My scene was loading very slow, even when I only have two gameobjects inside it. And because I called my function "SendMessage" before the page finish loading, a pop up with the error "SendMessage is not defined" appears.

-The steps to solve it were:

1-The form to call the funtion is :

function SaySomethingToUnity(_parameter_To_Send) {

SendMessage("GameObject_To_Call", "Function_To_Call", _parameter_To_Send);

}

You DO NOT need to use ""u.getUnity()" anymore.

Remember that (SendMessage will then call the function Function_To_Call() on the game object named GameObject_To_Call, passing a piece of string, int or float, data as an argument:)

2-Disable thee Exceptions in Unity(PlayerSettings->Publishing Settings->Enable Exceptions: None). This form, my scene was loading faster.

3-When everything was loaded. The "SendMessage" error did not appears anymore (the file UnityConfig.js that Unity generated when building does not have a definition for the function SendMessage, so do not look for it).

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jrbourne · Nov 10, 2015 at 05:00 PM 0

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Hello: seems like a great way to make communication with Send$$anonymous$$essage work. However, I tried the things that @azposporipo and I still get the "Send$$anonymous$$essage not defined" error back. I'm running in and iFrame - unity in one iFrame and Twine in the other. I'm thinking I just don't know how to get to the javascript in the first iFrame from the second iFrame. Does anyone has a solution for that?

cchacon jrbourne · Jan 16, 2016 at 06:32 AM 0

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hi jrbourne, did you get this working? i'm having the same problem

thanks, Carlos

Answer 3

Answer by HX2Chen · Dec 04, 2015 at 04:07 PM

I found the function defined of SendMessage in {YourGameProjectName}.js It's seems like this: function SendMessage(gameObject,func,param line 1,Col 536

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Answer 4

Answer by cchacon · Jan 17, 2016 at 05:30 PM

I was having the error: "SendMessage not defined" when I was integrating unity3d using iframe. I switched to using webgl-template (http://docs.unity3d.com/Manual/webgl-templates.html) and added my SendMessage call there, that worked fine.

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Answer 5

Answer by Schubkraft · May 20, 2016 at 02:49 PM

Hint: You need to wait for WebGL/Your game object to be loaded before calling it.

See http://forum.unity3d.com/threads/how-to-ensure-that-webgl-is-loaded-and-can-call-sendmessage.394512/

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Browser to Unity WebGL communication

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