Inventing Gravity :D

[hedgehogrider]

package  
{
	import flash.display.MovieClip;
	import flash.events.TimerEvent;
	import flash.utils.Timer;
	public class Player extends MovieClip
	{
		spawn();
		
		
		//Constructs Registration Areas aroud Player
		public var fReg:FloorReg;
		public var rReg:RightReg;
		public var lReg:LeftReg;
		public var cReg:CeilingReg;
		private var Time:Timer;
		public function Player() 
		{	
                        //This is adding registration areas to the display object and can be ignored
			var oHeight:Number = this.height
			fReg = new FloorReg(0, this.height, this.height / 4, this.width);
			addChild(fReg);
			rReg = new RightReg(this.width, 0, this.height - fReg.height, this.width / 4);
			addChild(rReg);
			lReg = new LeftReg(this.width / -4, 0, this.height - fReg.height, this.width / 4);
			addChild(lReg);
			cReg = new CeilingReg(0, this.height / -5, oHeight / 4, oHeight);
			addChild(cReg);
                        //threw in a new Timer object, 
			Time = new Timer(500, 0);
			
		}
		private function spawn():void
			{
				//direct player object to it's spawning animation and initialize the Fall function
				trace("spawnd");
				Time.start();
				fall();
			}

		//Constructs velocity vars
		private var yVel:Number = 0;
		private var xVel:Number = 0;
		public const TERMINAL_VELOCITY:Number = -7;
		private function fall():void
			{
				if (yVel > TERMINAL_VELOCITY)
					{
						Time.addEventListener(TimerEvent.TIMER, gravity);
					}
			}
		private function gravity(event:TimerEvent):void
			{	do
					{
						yVel--;
					}
				while(yVel > TERMINAL_VELOCITY)
				Time.removeEventListener(TimerEvent.TIMER, gravity);
			}
	}
	
}

I'm trying to simulate gravitational acceleration by constructing a function that will subtract from the Player object's yVelocity every half a second.
For now, I'm getting 1180:Call to a possibly undefined function spawn
but I'm sure there are other things wrong with the code, I'm quite new at this whole 'event flow' stuff so that could very well be the issue. Thanks in advance!

[dawsonk]

package {
	import flash.display.MovieClip;
	import flash.events.TimerEvent;
	import flash.utils.Timer;
	public class Player extends MovieClip {

		//Constructs Registration Areas aroud Player
		public var fReg:FloorReg;
		public var rReg:RightReg;
		public var lReg:LeftReg;
		public var cReg:CeilingReg;
		private var Time:Timer;
		//Constructs velocity vars
		private var yVel:Number=0;
		private var xVel:Number=0;
		public const TERMINAL_VELOCITY:Number=-7;

		public function Player() {

			//This is adding registration areas to the display object and can be ignored
			var oHeight:Number=this.height;
			fReg=new FloorReg(0,this.height,this.height/4,this.width);
			addChild(fReg);
			rReg=new RightReg(this.width,0,this.height-fReg.height,this.width/4);
			addChild(rReg);
			lReg=new LeftReg(this.width/-4,0,this.height-fReg.height,this.width/4);
			addChild(lReg);
			cReg=new CeilingReg(0,this.height/-5,oHeight/4,oHeight);
			addChild(cReg);
			//threw in a new Timer object, 
			Time=new Timer(500,0);
			spawn();

		}
		private function spawn():void {
			//direct player object to it's spawning animation and initialize the Fall function
			trace("spawnd");
			Time.start();
			fall();
		}
		private function fall():void {
			if (yVel>TERMINAL_VELOCITY) {
				Time.addEventListener(TimerEvent.TIMER, gravity);
			}
		}
		private function gravity(event:TimerEvent):void {
			do {
				yVel--;
			} while (yVel > TERMINAL_VELOCITY);
			Time.removeEventListener(TimerEvent.TIMER, gravity);
			trace("done");
		}
	}
}

[hedgehogrider]

XD
oh right, kind of just orphaned that mo' fo' in the middle of the class. God that was dumb. Thanks dawsonk! I owe you a cold one!