Caling a web service, WWW.isDone and Unity freezing

Unity Engine
1

Hi,

I have a simple web service running on IIS. The web service has a global variable that is constantly changing by virtue of the web service’s SetVariable function being called 10 times a second by a running Flash executable.

While the Flash application is running, I have a Unity application (Windows 7, standalone) that calls the web service repeatedly to get the latest value of the global variable, and updates the x position of a game object according to the value of the global variable.

The web service works fine. Flash continually sets the variable (about 10 times a second), and Unity continually gets its latest value. However, after a few seconds, Unity freezes and no longer reports that it has successfully ‘got’ the variable value. i.e. the WWW.isDone flag is no longer being set to true.

Then, after a minute or so, the Unity app suddenly smoothly animates the test object using all the values that have been set on the server since the Unity app froze. It’s as if Unity is suddenly catching up with everything it should have been doing in the intervening time. However, this does not make sense, since I am using the same global Unity variable (mWWW) each time I call the web service - which (I assume) overwrites any previously ‘got’ data (i.e. mWWW.text is overwritten each time).

Can anyone tell me what is going on, and how to fix this so that Unity smoothly and continuously calls the web service and updates the display?

My Unity code is as follows:

========================================

var mScript_TestObject:Script_TestObject;
var mForm:WWWForm;
var mWWW:WWW;
var mWebServiceURL:String;
var mWaitingForData:boolean;

function Awake()
{
…mScript_TestObject = gameObject.FindWithTag(“TestObject”).GetComponent(Script_TestObject);

…mWebServiceURL = “http://localhost/Service1.asmx/GetValue”;

…mForm = new WWWForm();
…mForm.AddField(“tVarName”, “X”);

…getDataFromWebService();
}

function Update ()
{
…if (mWaitingForData)
…{
…if (mWWW.error != null)
…{
…print(mWWW.error);
…getDataFromWebService();
…}
…else
…{
…if (mWWW.isDone)
…{
…mWaitingForData = false;
…updateDisplay();
…getDataFromWebService();
…}
…else
…{
…print(“Waiting for data”);
…}
…}
…}
}

private function getDataFromWebService():void
{
…mWWW = new WWW(mWebServiceURL, mForm);
…mWaitingForData = true;
}

private function updateDisplay():void
{
…<SNIP: some code which gets the string, tData, from mWWW.text>

…mScript_TestObject.setPosition(tData);
}

========================================

In the TestObject script, I have the following function, which simply sets the x position of the test object (a simple cube) according to the data received from the web service:

function setPosition(tData:String):void
{
…var tX:float = -0.8 + (parseFloat(tData) * 7.6);
…transform.position.x = tX;
}

There are no other objects or scripts in the project.

========================================

2

Hi,

I need to develop a game like online ques show in which we will have some characters play the game. They will see the questions and select one of them, the question will be called from the webservice. muliple players will play the game and who so ever will select the game and press the buzzer will win the game.

Please let me know if you have any idea of this kind of game, I am beginner in this world. if you can give me some reference link of help of code, that will be very much helpful.

Waiting for your reply!

Thanks in advance…