class Fireball1 extends MovieClip{
	private var vy:Number;
	private var ay:Number;
	private var k:Number;
	private var damp:Number;
	private var ylimit:Number;
	private var graphic:Number;
	private var timeInterval:Number;
	private var lifeSpan:Number = 0;
	private var rand:Number;
	private var back:MovieClip;
	

	function fireInit() {
		_x = Math.random()*320 + 130;
		_y = Math.random()*20 + 280;
		back = attachMovie("b"+ graphic, "ball", 1);
	
		k = .1;
		damp = .9;
		ylimit = Math.random()*60 + 230;
		vy = Math.random()*3;
		rand = Math.floor(Math.random()*500) + 500;
		onEnterFrame = fireJump;
//		timeInterval = setInterval(this, "jump", rand);
	}
	
	function fireJump():Void {
		ay = (_y - ylimit)*k;
		vy += ay;	
		_y -= vy;
		vy*damp;
		if(_y > 300){
			vy = 0;
		}
		// increase lifeSpan variable
		lifeSpan++;
		// when it reaches 5, self destroy
		// note that because the class instance is also a movieclip subclass
		// the setInterval gets deleted along with the movieclip
		if (lifeSpan == 50) {
			removeMovieClip(this);
		}
	}
}