var mainArray:Array = new Array();
for each(var item:XML in xml.building)
{
var obj = {
type: item.attribute("type"),
title: item.attribute("title"),
image: item.attribute("image"),
infoArray: item.children()
};
mainArray.push(obj);
}  

var oldPoint:Point = new Point(0,0);   // Тут нужны стартовые координаты объекта. Появляется он, надеюсь, в свободной точке

function update(e:Event):void
{
if (fish.hitTestObject(wall))
{
if(oldPoint.x+fish.width < wall.x && fish.x+fish.width>wall.x)    // врезались в стену слева
{
fish.x = wall.x-fish.width;
}
else if(oldPoint.x > wall.x+wall.width && fish.x < wall.x+wall.width)    // врезались в стену справа
{
fish.x = wall.x+wall.width;
}
else if(oldPoint.y+fish.height < wall.y && fish.y+fish.height>wall.y)     // врезались в стену сверху
{
fish.y = wall.y+fish.height;
}
else if(oldPoint.y > wall.y+wall.height && fish.y < wall.y+wall.height)    // врезались в стену снизу
{
fish.y = wall.y+wall.height;
}
oldPoint = new Point(fish.x, fish.y);
}
else
{
oldPoint = new Point(fish.x, fish.y);
TweenMax.to(fish, 2 ,{x :mouseX, y: mouseY});
}
}

<buildings>

<building id="0" type="0">
<name>Школа</name>
<capacity>100</capacity>
</building>

<building id="1" type="1">
<name>Банк</name>
<cost>1500</cost>
</building>

<building id="2" type="2">
<name>Участок</name>
<capacity>100</capacity>
<armor>1.5</armor>
</building>

</buildings>

var mainArray:Array = new Array();
for each(var item:XML in xml.building)
{
var locArray = new Array();
var i:int = 0;
while(i<item.attribute().length)
{
locArray.push(item.attribute(i));
i++;
}
i= 0;
while(i<item.children().length)
{
locArray.push(item.children(i));
i++;
}
mainArray.push(locArray);
}

interface IBuildingModel
{
function init(xml:XML):void;

function get id():int;

function get type():int;
}

class School implements IBuildingModel
{
private var _id:int;
private var _type:int;
private var _name:String;
private var _capacity:int;
public function School()
{

}

public function init(xml:XML):void
{
_id = parseInt(xml.attribute("id"));
_type= parseInt(xml.attribute("type"));
_name= xml.attribute("name");
_capacity= parseInt(xml.child("capacity"));
}

public function get type():int
{
return(_type);
}

public function get id():int
{
return(_id);
}
}

var list:Vector.<IBuildingModel> = new Vector.<IBuildingModel>()
for each(var item:XML in xml.building)
{
var type:int = parseInt(item.attribute("type"));
var model:IBuildingModel;
switch(type)
{
case 0:
model = new School();
break

case 1:
model = new Bank();
break

case 2:
model = new Police();
break;
}
model.init(item);
list.push(model);
}

button.visible = false;

var i:int = 0;
while(i<this.numChildren)
{
this.getChildAt(i).visible = false;
i++;
}

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

/**
* ...
* @author Dima
*/
public class Main extends Sprite
{
private var _app:AppControl = null;
//
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}

private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
// entry point

_app = new AppControl();
this.addChild(_app.view);
_app.init();
}

}

}

package
{
import flash.display.DisplayObject;
import flash.display.Sprite;
/**
* ...
* @author Dima
*/
public class AppControl
{
private var _mainView:Sprite = new Sprite();
private var _appView:AppView = new AppView();
//
private var _manager:SwfManager = new SwfManager();
//
private var var _curView:DisplayObject = null;
//
public function AppControl()
{

}
//
public function init():void
{
_mainView.addChild(_appView);
_curView = _appView;
}
//
private function newSwfToScene(url:String):void
{
if (_curView)
{
if (_curView.parent)
{
_curView.parent.removeChild(_curView);
}
}
_curView = _manager.getNewSwf(url);
_mainView.addChild(_curView);
}
//
private function toMainView():void
{
if (_curView)
{
if (_curView.parent)
{
_curView.parent.removeChild(_curView);
}
}
_curView = _appView;
_mainView.addChild(_curView);
}
//
public function get view():Sprite
{
return(_mainView);
}
}

}

package
{
import flash.display.DisplayObject;
import flash.display.Loader;
import flash.net.URLRequest;
/**
* ...
* @author Dima
*/
public class SwfManager
{

public function SwfManager()
{

}
//
public function getNewSwf(url:String):DisplayObject
{
var loader:Loader = new Loader();
loader.load(new URLRequest(url));
return(loader);
}
}

}

Type t = this.GetType();

PropertyInfo p = t.GetProperty(varName);

p.SetValue(this, guiEnabled, null);