[silin]

package
{
	import flash.display.*;
 
	public class Main extends Sprite
	{
 
		public function Main():void
		{
			addChild(new Body());
		}
	}
}
 
 
/////////////
import flash.display.*;
import flash.events.*;
class Body extends Sprite
{
	public var vX:Number = 0;
	public var vY:Number = 0;
	private var pX:Number;
	private var pY:Number;
	private var damp:Number = 0.9;
	private var dragging:Boolean = false;
 
	public function Body()
	{
 
		graphics.beginFill(0x008000);
		graphics.drawCircle(0, 0, 40);
		addEventListener(Event.ADDED_TO_STAGE, addedToStage);
		buttonMode = true;
 
	}
 
	private function addedToStage(e:Event):void
	{
		removeEventListener(Event.ADDED_TO_STAGE, addedToStage);
		addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);
		stage.addEventListener(MouseEvent.MOUSE_UP, mouseUp);
		addEventListener(Event.ENTER_FRAME, enterFrame);
	}
 
	private function enterFrame(e:Event):void
	{
		if (dragging)
		{
			vX = stage.mouseX - pX;
			vY = stage.mouseY - pY;
			pX = stage.mouseX;
			pY = stage.mouseY;
		}
		else
		{
			vX *= damp;
			vY *= damp;
		}
		x += vX;
		y += vY;
	}
 
	private function mouseDown(e:MouseEvent):void
	{
		dragging = true;
		pX = stage.mouseX;
		pY = stage.mouseY;
	}
 
	private function mouseUp(e:MouseEvent):void
	{
		dragging = false;
	}
}