[goarcade]

хм... может так попробовать? очень простой код

package {
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.geom.Point;

	public class Test extends Sprite
	{
		public var p0:Point;
		public var p1:Point;
		public function Test()
		{

			stage.frameRate=3;

			p0 = new Point (mouseX,mouseY);
			p1 = new Point (mouseX,mouseY);
			this.graphics.lineStyle(1);
			this.graphics.moveTo(mouseX,mouseY);
			this.addEventListener(Event.ENTER_FRAME,enterFrame);
		}
		public function enterFrame(e:Event):void
		{
			var p:Point = new Point (mouseX,mouseY);
			if(p1.subtract(p).length<5)return void;
			var t:Number = 1.5;
			var control:Point = new Point(p0.x+(p1.x-p0.x)*t,p0.y+(p1.y-p0.y)*t);
			this.graphics.curveTo(control.x,control.y,mouseX,mouseY);
			p0 = control;
			p1 = p;
		}
	}
}