//SOUND CONTROL Example
// Shows two methods to let the user turn music on and off
// Method 1:  Have two buttons, on for turning the music on
//            and one for turning the music off
// Method 2:  Have one on/off button: 
//            It turns the music on if it's currently off
//            It turns the music off if it's currently on

package
{
	import flash.display.*;
	import flash.events.*;
	import flash.media.SoundChannel;

	public class Wk9MusicButton extends MovieClip
	{	
		// Create an instance of a custom sound class that 
		// you created and set up a "linkage" 
		var gameMusic: MyMusic = new MyMusic( );
		// Create a SoundChannel object to control the music
		var gameMusicControl:SoundChannel = new SoundChannel();
		
		// Boolean variable used by the on/off music button 
		// to keep track of whether the music currently is on or off
		var soundOn: Boolean;

		
		function Wk9MusicButton( )
		{
			// Button listeners for two buttons, one that turns the music on and one off
			onBtn.addEventListener( MouseEvent.CLICK, turnMusicOn );
			offBtn.addEventListener( MouseEvent.CLICK, turnMusicOff );
			
			// Button listener for on/off button that turns the music on and off
			musicBtn.addEventListener(MouseEvent.CLICK, switchMusicStatus);
		}
		
		function turnMusicOn( evt: MouseEvent )
		{
			gameMusicControl = gameMusic.play( );
		}
		function turnMusicOff( evt: MouseEvent )
		{
			gameMusicControl.stop( );
		}


		// Button handler that stops the music if it's on and starts it if it's off
		function switchMusicStatus( evt:MouseEvent )
		{	
			if (soundOn == true)  // Stop music
			{
				gameMusicControl.stop();
				soundOn = false;
				msgBox.text = "Off";
			}
			else  // Start music
			{
				gameMusicControl = gameMusic.play( );
				soundOn = true;
				msgBox.text = "On";
			}
		}

	}
}