Scrolling Help!

[Gamef13]

This is Probably a VERY stupid question but i want to make a scrolling background and im inputing the code into the movieclip. I went at it like this:

onClipEvent(load){
	var sspeed = 3;
}
onClipEvent(enterFrame){
	function(){
		do{
			_x -= sspeed;
		}while(_x >= 0);
	}
}

basicly i want the screen to scroll by the stage until the _x variable is less than a set number. It didnt scroll when i did this though. Can anyone help?

[ASWC]

onClipEvent(load){
var sspeed = 3;
}
onClipEvent(enterFrame){

if(this._x >= 0){
this._x -= sspeed;
}

}

[Yahivin]

Edit: Beaten to the punch.

Additionally, is the x position of the background much great than zero to begin with?

[Gamef13]

Wow worked perfectly thanks. This is the first game i have ever worked on and so far its coming along well.

[Gamef13]

Srry for double post but i have another question for you all. In continuation to my first question, i have two scrolling backgrounds so that when one scrolls off the screen the other will come onto the screen. So my first scrolling background scrolls across and the second scrolling background is off the sight to the left. So i want to know how when my first background's _x value reaches -300 i want the second to start rolling into veiw from the right to the left side of the screen. This is probably confusing so plz ask for more details if needed.

[Yahivin]

A simple way would be to set up the first one at the correct position way off-screen to the right and have it scrolling closer so that it come on screen when the other one leaves.

For example if your first background starts at _x = 300, then your second one could start at _x = 900 scroll it in the same way.

[Gamef13]

ya but it woundt be a loop. how can i progam it to do this continually?

[Yahivin]

The way I've done it is having a containing object with both backgrounds. Then do something like:

onClipEvent(enterFrame){
	bg1._x -= sspeed;
        bg2._x -= sspeed;

        if(bg1._x < -300) {
            bg1_x += 600;
        }

        if(bg2._x < -300) {
            bg2_x += 600;
        }
}

[Gamef13]

Perfect thx