Using a variable to allow only one video to play at a time - actionscript-3

Question

I recently created a project that has four buttons. Each button adds an FLV player to the stage and plays a video. During testing, I noticed that clicking another button before the first function is finished loading the movie, TWO movies will play.
Is there a more efficient way of handling this? I feel like there is a lot of redundant code here, is there a better way to do the following:
Button One Pressed
Load Video One
Ignore all other event listeners until the movie ends, or the user dismisses the video (Clicks to dismiss)
I initially though it would be a good idea to create a two functions, one that removes all event listeners, and another that adds all the event listeners. When a button is pressed, before it loads the FLVPlayback, remove all event listeners. When the movie is COMPLETE, add all the listeners back. That seems taxing, and very inefficient.
I wrote the following code as an example of what I'm trying to do. (This outputs the same string "One Can play" every time though).
var canLaunchOne:Boolean;
var canLaunchTwo:Boolean;
var canLaunchThree:Boolean;
var canLaunchFour:Boolean;
buttonMCOne.addEventListener(MouseEvent.MOUSE_DOWN, playMovieOne);
buttonMCTwo.addEventListener(MouseEvent.MOUSE_DOWN, playMovieTwo);
buttonMCThree.addEventListener(MouseEvent.MOUSE_DOWN, playMovieThree);
buttonMCFour.addEventListener(MouseEvent.MOUSE_DOWN, playMovieFour);
trace(canLaunchTwo);
function playMovieOne(event:Event):void {
canLaunchOne = true;
canLaunchTwo = false;
canLaunchThree = false;
canLaunchFour = false;
trace(canLaunchOne);
playTheRightVideo();
}
function playMovieTwo(event:Event):void {
canLaunchOne = false;
canLaunchTwo = true;
canLaunchThree = false;
canLaunchFour = false;
playTheRightVideo();
}
function playMovieThree(event:Event):void {
canLaunchOne = false;
canLaunchTwo = false;
canLaunchThree = true;
canLaunchFour = false;
playTheRightVideo();
}
function playMovieFour(event:Event):void {
canLaunchOne = false;
canLaunchTwo = false;
canLaunchThree = false;
canLaunchFour = true;
playTheRightVideo();
}
function playTheRightVideo():void {
if(canLaunchOne = true){
trace("One Can Play"); // do all that video stuff for video one
} else if(canLaunchTwo = true){
trace("Two Can Play"); // do all that video stuff for video one
} else if(canLaunchThree = true){
trace("Three Can Play"); // do all that video stuff for video one
} else {
trace("Four Can Play");
}
}
I tried this code, and I got it "working", but every function will always set canLaunchMovie to true...
import flash.events.Event;
var canLaunchMovie:Boolean;
buttonMCOne.addEventListener(MouseEvent.MOUSE_DOWN, playMovieOne);
buttonMCTwo.addEventListener(MouseEvent.MOUSE_DOWN, playMovieTwo);
buttonMCThree.addEventListener(MouseEvent.MOUSE_DOWN, playMovieThree);
buttonMCFour.addEventListener(MouseEvent.MOUSE_DOWN, playMovieFour);
function playMovieOne(e:Event):void {
if(canLaunchMovie = true){
this.canLaunchMovie = false;
trace("One Can Play"); // do all that video stuff for video one
} else {
trace("I can't do that(play movie one) Dave");
}
}
function playMovieTwo(e:Event):void {
if(canLaunchMovie = true){
this.canLaunchMovie = false;
trace("Two Can Play"); // do all that video stuff for video one
} else {
trace("I can't do that(play movie two) Dave");
}
}
function playMovieThree(e:Event):void {
if(canLaunchMovie = true){
this.canLaunchMovie = false;
trace("Three Can Play"); // do all that video stuff for video one
} else {
trace("I can't do that(play movie three) Dave");
}
}
function playMovieFour(e:Event):void {
if(canLaunchMovie = true){
this.canLaunchMovie = false;
trace("Four Can Play"); // do all that video stuff for video one
} else {
trace("I can't do that(play movie four) Dave");
}
}

Answer 1

You don't need to have more than one flvplayback.
You only need to change the source of your flvplayback.