Tag: velocity

var velocityInfo:TextField = new TextField();
velocityInfo.x = 20;
velocityInfo.y = 20;
addChild(velocityInfo);

var prevX:Number = mouseX;
var prevY:Number = mouseY;
var velX:Number = 0;
var velY:Number = 0;

addEventListener(Event.ENTER_FRAME, onLoop);

function onLoop(evt:Event):void {
	 
	 velX = mouseX - prevX;
	 velY = mouseY - prevY;
	 
	 velocityInfo.text = velX + ", " + velY
	 
	 prevX = mouseX;
	 prevY = mouseY;
}

Wrote this in response to a question from one of my students. The next step is to use velX and velY to push objects around the screen.