shark class

Shark class

package
{
	import flash.display.*;
	import flash.events.*;
	public class Shark extends MovieClip
	{
			var CharacterX:Number = 0;
			var CharacterY:Number = 0;
			 static var targetX:int;
			static var targetY:int
		public function Shark()
		{

			this.x = 300;
			this.y = 200;
			addEventListener(Event.ENTER_FRAME,playGame);
		}

		public function set CX(characterx:Number){
			this.CharacterX = characterx - this.x;

		}
		public function set CY(charactery:Number){
			this.CharacterY = charactery - this.y;
		}






		function playGame(event:Event):void
		{
			var ease:int = 20;
			var speed:int = 10;
			targetX = root.CharacterX - this.x;
			targetY = root.CharacterY - this.y;
			var rotation = Math.atan2(targetY,targetX) * 180 / Math.PI;
			if (Math.abs((rotation - this.rotation)) > 180)
			{
				if (((rotation > 0) && this.rotation < 0))
				{
					this.rotation -=  (((360 - rotation) + this.rotation) / ease);
				}
				else if (this.rotation > 0 && rotation < 0)
				{
					this.rotation +=  (((360 - rotation) + this.rotation) / ease);
				}
			}
			else if ((rotation < this.rotation))
			{
				this.rotation -=  Math.abs(this.rotation - rotation) / ease;
			}
			else
			{
				this.rotation +=  Math.abs((rotation - this.rotation)) / ease;
			}




			var vx:Number = speed * (90 - Math.abs(this.rotation)) / 90;
			var vy:Number;//Velocity in y is the difference of speed and vx.
			if (this.rotation < 0)
			{
				vy =  -  speed + Math.abs(vx);//Going upwards.
			}
			else
			{
				vy = speed - Math.abs(vx);//Going downwards.
			}
			this.x +=  vx;
			this.y +=  vy;
		}
	}

}