Help with clearInterval

[cellos]

Hello there,

I'm trying to code a fade in/out function to decrease/increase the opacity of a background movieclip. When the user clicks on the play button the background should fade out a bit and when the video finishes playing the background should fade in back to 100.
The thing is that it seems that clearInterval is not working properly and as a beginner I can't see why. I've debbuged the code and the interval is not cleared so it keeps coming back to it over and over again. The 1st time it goes to fadeOut function, keeps decreasing the opacity of the movie clip and when it reaches a value less than 40 and it jumps to the clearInterval part. But it keeps going there all the time, so when the video is played the NetStream.Play.Stop part is executed so it calls the fadeIn function to start the process of increasing the opacity back to 100. But it does not work properly as because the fadeOut function is still running. So now both functions add/subtract a value from the alpha of the movieclip which at this point just keeps flickering.
Help me please!!!

Please take a look at the code:

stop();


// Fade In/Out

mWIPPic2._alpha=100;

function fadeOut (mClip:MovieClip):Void {
if (mClip._alpha > 40){
mClip._alpha=mClip._alpha-5;
trace (mClip._alpha);
updateAfterEvent();
}
else {
clearInterval(nFadeOutInt);
}
};

function fadeIn (mClip2:MovieClip):Void {
if (mClip2._alpha < 100){
mClip2._alpha=mClip2._alpha+1;
trace (mClip2._alpha);
updateAfterEvent();
}
else {
clearInterval(nFadeInInt); }
};

// Create a NetConnection object
var my_nc:NetConnection = new NetConnection();
// Create a local streaming connection
my_nc.connect(null);
// Create a NetStream object and define an onStatus() function
var my_ns:NetStream = new NetStream(my_nc);
// Attach the NetStream video feed to the Video object
my_video.attachVideo(my_ns);

// Buffering

// Set the buffer time
my_ns.setBufferTime(20);

my_ns.onStatus = function(info:Object) {

if (info.code == "NetStream.Play.Start") {
bufferclip._visible = false;
playclip._visible = true;
}

if (info.code == "NetStream.Buffer.Full") {
bufferclip._visible = false;
playclip._visible = false;
}

if (info.code == "NetStream.Buffer.Empty") {
bufferclip._visible = true;
}

if (info.code == "NetStream.Play.Stop") {
my_ns.seek(0);
my_ns.pause(true);
bufferclip._visible = false;
playclip._visible = true;
var nFadeInInt:Number = setInterval(fadeIn,100,mWIPPic2); }

trace (info.code);
}

// Begin playing the FLV file
my_ns.play("WIP.flv");

my_ns.pause();

// Controls
btRewind.onRelease = function() {
my_ns.seek(0);
};

btPlay.onRelease = function() {
var nFadeOutInt:Number = setInterval(fadeOut,100,mWIPPic2);
my_video._visible = true;
my_ns.pause(false);
};

btPause.onRelease = function() {
my_ns.pause(true);
};

Thanks

Marcello

[nunomira]

hi,

This has to do with variable scope. The problem is how you define the interval.

Here's a simple example to help you understand:

code:

---

this.onMouseDown = function()

{

	var myInterval = setInterval(myFunction, 1000);

};

function myFunction()

{

	trace("called once?");

	trace('myInterval ' + myInterval);

	clearInterval(myInterval);

}

---

In this case the interval isn't cleared, and the interval is undefined.

Now this:

code:

---

var myInterval;

this.onMouseDown = function()

{

	myInterval = setInterval(myFunction, 1000);

};

function myFunction()

{

	trace("called once?");

	trace('myInterval ' + myInterval);

	clearInterval(myInterval);

}

---

Now it works as expected.
Why?
Because you were using var that was creating a local variable inside the method. This variable isn't accessible from anywhere else, so, the interval can't be cleared.

Please, use AS tags.

[cellos]

Oh yeah, this solved my problem. Thanks very much!!!!

http://www.ThreeCellos.co.uk