class Scroll extends MovieClip
{
	//variables
	var ground1:MovieClip;
	var i:Number = 0;
	var iLimit:Number = 7;
	var scrollSpeed:Number = 8;
	var moving:Boolean = true
	var collision:Boolean = false;
	var groundStarty:Number;
	var groundHeight:Number=1199;
	var scrollStop:Boolean = false;
	var life:Number = 5;
	var music:Sound;
	var time:Number;
	var hit:Boolean = false;
	var musicOn:Boolean = true;
	var lifeChange:Number = 1;
	var gameOver:Boolean;
	var keys:Number;
	var level:Number = 1;
	
	
	
	//functions
	
	function backgroundMove ()
	{
		
		this._y -= scrollSpeed;
		if (this._y <= (groundStarty-(groundHeight)*8.5))
		{
			scrollStop=true;
			gameOver=true;
		}
		
	}
	
	function setupMaze () 
	{
		this.attachMovie ('ground'+i,'ground'+i,0);  // sets first section of hole
		this['ground'+i]._x=0;
		this['ground'+i]._y=0;
		
		for (i=1; i<= 9; i++)
		{			
			this.attachMovie ('ground'+i,'ground'+i,i); //sets up remaining sections of hole
			this['ground'+i]._y = (groundHeight*i);
			groundStarty = this._y;
			//trace (i);
		}
	}
	
		
	function collisionTest ()
	{
		//trace (collision);
		if (collision == false)
		{
			if (this.hitTest(_root.sprite.hit1x,_root.sprite.y1,true)) //top left hit
			{
				collision = true;
				//trace ('top left');
				_root.sprite.topLeft ();
				lifeChange=1;
				lifeHandler ();
			} else 
			if (this.hitTest(_root.sprite.hit2x,_root.sprite.y1,true)) //top right hit
			{
				collision = true;
				//trace ('top right');
				_root.sprite.topRight();
				lifeChange=1;
				lifeHandler ();
			} else 
			if (this.hitTest(_root.sprite.hit3x,_root.sprite.y2,true)) //center left hit
			{
				collision = true;
				//trace ('center left');
				_root.sprite.centerLeft ();
				lifeChange=1;
				lifeHandler ();
			} else 
			if (this.hitTest(_root.sprite.hit4x,_root.sprite.y2,true)) //center right hit
			{
				collision = true;
				//trace ('center right');
				_root.sprite.centerRight ();
				lifeChange=1;
				lifeHandler ();
			} else 
			if (this.hitTest(_root.sprite.hit5x,_root.sprite.y3,true)) //bottom left hit
			{
				collision = true;
				//trace ('bottom left');
				_root.sprite.bottomLeft ();
				lifeChange=1;
				lifeHandler ();
			} else 
			if (this.hitTest(_root.sprite.hit6x,_root.sprite.y3,true)) //bottom right hit
			{
				collision = true;
				//trace ('bottom right');
				_root.sprite.bottomRight ();
				lifeChange=1;
				lifeHandler ();
			}
		}
	}
 
	function lifeHandler ()
	{
		if (hit == false)
		{
			_root.sprite.bonkSound.start ();
			time=getTimer()+100;
			//trace (lifeChange);
			life=life-lifeChange;
			hit=true;
			//trace (life);
			if (life >= 0)
			{
				_root.lifeIndicator.gotoAndPlay(_root.lifeIndicator._currentframe +(lifeChange*4));
				if (_root.lifeIndicator.currentframe > 25)
				{
					_root.lifeIndicator.currentframe = 25;
				}
			} 
			
			if (life <=0)
			{
				_root.gotoAndPlay ('gameOver');
				scrollStop=true;
				music.stop ('music');
			}
		}
		if (getTimer() > time)
		{
			hit=false;
		}
		
	}
	
	function startMusic ()
	{
		if (scrollStop==false)
		{
			music=new Sound();
			music.attachSound('music');
			music.start ();
			
		}
	}
	
	//handlers
	function onEnterFrame()
	{
		//trace (scrollStop);
		if (scrollStop==false)
		{
			backgroundMove ();
			collisionTest ();
		}
		
		if (gameOver == true)
		{
			if (keys < 4)
			{
				gameOver = false;
				_root.gotoAndPlay ('lose');
			} else
			{
				level++;
				scrollSpeed += (level*2);
				trace ('scroll speed = ' + scrollSpeed);
				gameOver = false;
				_root.gotoAndPlay ('win');
			}
		}
		
		trace ('keys = '+ keys);
		
	}
	
	
	
	
	//constructor
	
	function Scroll () 
	{
		setupMaze ();
		if (musicOn == true)
		{
			startMusic ();
		}
		
	}
	
}