Hi would like to know the best method of adding a preloader. Then when the content is loaded create an instance of Starling framework. Here is what I have:
import flash.display.Loader;
import flash.display.Sprite;
import flash.events.Event;
import loaders.Preloader;
import starling.core.Starling;
//main class container
public class Game extends Sprite
{
//preloader class
private var _loader:Preloader;
//starling instance
private var _starling:Starling;
//constructor to initialise game
public function Game():void
{
this.addEventListener(Event.ADDED_TO_STAGE, onAddedToStage)
}
private function onAddedToStage(e:Event):void
{
this.removeEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
_loader = new Preloader();
addChild(_loader);
_loader.addEventListener("loaded_game", onGameLoaded);
}
private function onGameLoaded(e:Event):void
{
trace("game loaded");
_starling = new Starling(Game,stage,null,null,"auto","baseline");
_starling.start();
}
}
This is the Preloader class:
package loaders
{
import flash.events.Event;
import flash.display.Sprite;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
public class Preloader extends Sprite
{
private var textLoaded:TextField;
public function Preloader()
{
this.addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
}
private function onAddedToStage(event:Event):void
{
// remove added to stage listener
this.removeEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
textLoaded = new TextField();
textLoaded.x = 300;
textLoaded.y = 300;
textLoaded.border = true;
textLoaded.autoSize = "center";
addChild(textLoaded);
//loop current load state
this.addEventListener(Event.ENTER_FRAME, loadGame);
this.addEventListener(Event.REMOVED_FROM_STAGE, onRemovedFromStage);
}
private function onRemovedFromStage(event:Event):void {
this.removeEventListener(Event.ENTER_FRAME, loadGame);
this.removeEventListener(Event.REMOVED_FROM_STAGE, onRemovedFromStage);
}
private function loadGame(e:Event):void
{
//vars
var total:Number = parent.stage.loaderInfo.bytesTotal;
var loaded:Number = parent.stage.loaderInfo.bytesLoaded;
textLoaded.text = Math.floor((loaded/total)* 100) + "%";
if (total == loaded)
{
this.removeEventListener(Event.ENTER_FRAME, loadGame);
dispatchEvent(new Event("loaded_game", true));
}
}
}//end of class
}
Is this the best way of doing it or is there a more efficient, practical option? As you can see I am making use of Flash classes before I instantiate Starling? The Preloader is simply a textfield listing what is loaded, this should allow the application to load up faster.
Don't you think that it would make more sense to create an external SWF that preloads your game? It is always a better solution than incorporating a preloader into your main game file.