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girasquid/Keyboard.as

Created September 29, 2015 00:26
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  1. girasquid revised this gist Sep 29, 2015. No changes.
  2. girasquid created this gist Sep 29, 2015.
    94 changes: 94 additions & 0 deletions Keyboard.as
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    package controllers {
    import com.junkbyte.console.ConsoleChannel;
    import starling.display.Stage;
    import starling.events.KeyboardEvent;

    public class Keyboard {
    private static const channel:ConsoleChannel = new ConsoleChannel("Keyboard");
    private static var stage:Stage;
    private static var trackingKeys:Object = {};

    private static var event:KeyboardEvent;

    public static function monitor(s:Stage):void {
    stage = s;
    stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownListener);
    stage.addEventListener(KeyboardEvent.KEY_UP, keyUpListener);
    }

    private static function keyDownListener(e:KeyboardEvent):void {
    var letter:KeyboardLetter = instantiateKey(e);
    letter.change(e);
    }

    private static function keyUpListener(e:KeyboardEvent):void {
    var letter:KeyboardLetter = instantiateKey(e);
    letter.change(e);
    }

    private static function instantiateKey(e:KeyboardEvent):KeyboardLetter {
    if(!trackingKeys.hasOwnProperty(e.keyCode)) {
    trackingKeys[e.keyCode] = new KeyboardLetter();
    }
    return trackingKeys[e.keyCode];
    }

    public static function pressing(keyCode:uint):Boolean {
    if(trackingKeys.hasOwnProperty(keyCode)) {
    return trackingKeys[keyCode].pressing();
    }
    return false;
    }

    public static function consume(keyCode:uint):void {
    if(trackingKeys.hasOwnProperty(keyCode)) {
    trackingKeys[keyCode].consume();
    }
    }

    public static function value(keyCode:uint):Number {
    if(trackingKeys.hasOwnProperty(keyCode)) {
    return trackingKeys[keyCode].value;
    }
    return 0;
    }
    }
    }

    import com.junkbyte.console.ConsoleChannel;
    import starling.events.KeyboardEvent;

    class KeyboardLetter {
    public var value:Number;

    private static const channel:ConsoleChannel = new ConsoleChannel("KeyboardLetter");

    private static const DOWN_VALUE:Number = 1;
    private static const UP_VALUE:Number = 0;

    private var pressed:Boolean;

    public function KeyboardLetter():void {
    pressed = false;
    }

    public function consume():void {
    value = UP_VALUE;
    }

    public function pressing():Boolean {
    return value > UP_VALUE;
    }

    public function change(e:KeyboardEvent):void {
    if(e.type == KeyboardEvent.KEY_DOWN && !pressed) {
    value = DOWN_VALUE;
    pressed = true;
    channel.info("Changing for", e.keyCode, e.type);
    } else if(e.type == KeyboardEvent.KEY_UP && pressed) {
    value = UP_VALUE;
    channel.info("Changing for", e.keyCode, e.type);
    pressed = false;
    }
    }
    }
    15 changes: 15 additions & 0 deletions Usage.as
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    import controllers.Keyboard;
    import flash.ui.Keyboard;

    // inside a DisplayObjectContainer that is on the stage right now
    controllers.Keyboard.monitor(this.stage);

    private function loop(e:EnterFrameEvent):void {
    if(controllers.Keyboard.pressing(flash.ui.Keyboard.UP)) {
    trace("Pushing the UP button! This will log on every frame until the button isn't pressed anymore.");
    }
    if(controllers.Keyboard.pressing(flash.ui.Keyboard.DOWN)) {
    trace("Pushing the DOWN button! This will only log once until the button isn't pressed.");
    controllers.Keyboard.consume(flash.ui.Keyboard.DOWN);
    }
    }