Ball.hx

package ;
import openfl.display.Sprite;

class Ball extends Sprite {
	public function new() {
		super();
		this.graphics.beginFill(0xffffff);
		this.graphics.drawCircle(0, 0, 10);
		this.graphics.endFill();
	}
}

Main.hx

package ;

import flash.display.Sprite;
import flash.events.Event;
import flash.Lib;

class Main extends Sprite 
{
	var inited:Bool;

	private var platform1:Platform;
	private var platform2:Platform;
	private var ball:Ball;

	/* ENTRY POINT */
	
	function resize(e) 
	{
		if (!inited) init();
		// else (resize or orientation change)
	}
	
	function init() 
	{
		if (inited) return;
		inited = true;
		
		platform1 = new Platform();
		platform1.x = 5;
		platform2.y = 200;
		this.addChild(platform1);

		platform2 = new Platform();
		platform1.x = 480;
		platform2.y = 200;
		this.addChild(platform2);

		ball = new Ball();
		ball.x = 250;
		ball.y = 250;
		this.addChild(ball);
	}

	/* SETUP */

	public function new() 
	{
		super();	
		addEventListener(Event.ADDED_TO_STAGE, added);
	}

	function added(e) 
	{
		removeEventListener(Event.ADDED_TO_STAGE, added);
		stage.addEventListener(Event.RESIZE, resize);
		#if ios
		haxe.Timer.delay(init, 100); // iOS 6
		#else
		init();
		#end
	}
	
	public static function main() 
	{
		// static entry point
		Lib.current.stage.align = flash.display.StageAlign.TOP_LEFT;
		Lib.current.stage.scaleMode = flash.display.StageScaleMode.NO_SCALE;
		Lib.current.addChild(new Main());
		//
	}
}

Platform.hx

package ;
import openfl.display.Sprite;

class Platform extends Sprite {
	public function new() {
		super();
		this.graphics.beginFill(0xffffff);
		this.graphics.drawRect(0, 0, 15, 100);
		this.graphics.endFill();
	}
}