Check for how long the given key has been held in FlashPunk mitigating the key-repeat under Linux

FlashPunkKeyholdTest.as

package {
    import flash.utils.getTimer;

    import net.flashpunk.*;
    import net.flashpunk.utils.*;

    /**
     * <p>
     * The reason to use such test is that under Linux holding a key triggers a key-repeat functionality after
     * a moment and so, key-press events are generated. Therefore the Input.pressed() method will periodically
     * report true even though the player just holds the key. Such behaviour is not noticeable under Windows
     * (player has to release the button and press it again to generate a key-press event).
     *
     * <p>
     * The same problem exists in Flixel with the FlxG.justPressed() method.
     */
    public class FlashPunkKeyholdTest extends Engine {
        public var spaceWasPressed:Boolean = false;
        public var spacePressTime:int = 0;

        public function Main() {
            super( 640, 480, 60, false );
        }

        override public function update():void {
            super.update();
            if ( Input.check( Key.SPACE ) ) {
                if ( !spaceWasPressed ) {
                    spaceWasPressed = true;
                    spacePressTime = getTimer();
                }
            }
            else {
                if ( spaceWasPressed ) {
                    trace( "SPACE press time: " + ( getTimer() - spacePressTime ) );
                    spaceWasPressed = false;
                    spacePressTime = 0;
                }
            }
        }
    }
}