import mx.utils.Delegate



class MCAnimator 

{
	
	public static var LOOP		: Number = 1;
	
	public static var FORWARD	: Number = 2;
	
	public static var BACKWARDS	: Number = 4;
	
	
	private var movingMC		: MovieClip;
	
	
	private var playDirection	: Number;
	
	private var isLooping		: Boolean;
	
	

	public function MCAnimator( mc: MovieClip )
	
	{
		
		this.movingMC 	= mc;
		
		this.isLooping 	= false;
		
		
		this.playDirection = 0;
	
	}
	

	

	public function play( flags: Number )
	
	{
		
		if( ( flags & FORWARD ) == FORWARD )

		{

			this.playDirection = 1;

		}

		else if( ( flags & BACKWARDS ) == BACKWARDS )

		{

			this.playDirection = -1;

		}

		
if( ( flags & LOOP ) == LOOP )

		{

			this.isLooping = true;

		}


		if( this.playDirection != 0 )

		{

			this.movingMC.onEnterFrame = Delegate.create( this, onEnterFrame );

		}

		else

		{

			trace( "MCAnimator ussage error: direction not specificied" );

		}

	}


	public function stop( )
	{

		delete this.movingMC.onEnterFrame;

	}



	private function onEnterFrame( )

	{

		var actual	: Number = this.movingMC._currentframe;

		var total	: Number = this.movingMC._totalframes;



		var nextStep: Number = actual + this.playDirection;

		

		if( this.isLooping == false )

		{

			if( nextStep> total )

			{

				nextStep = total;


				this.stop( );

			}

			if( nextStep< 1 )

			{

				nextStep = 1;
	

				this.stop( );

			}

		}

		else

		{

			if( nextStep == 0 )

			{

				nextStep = total;

			}

			if( nextStep == total+1 )

			{

				nextStep = 1;

			}

		}


		this.movingMC.gotoAndStop( nextStep );

	}

}