abstract class ScaleButtonEffects( val grow : float ) : ButtonEffects {

    var initialScale : float

    override fun initialise(button: Button) {
        initialScale = button.actor.scaleXY
    }

    override fun enter(button: Button): Action {
        return ScaleTo(button.actor, 0.1, initialScale * 1.2, Eases.easeOut)
    }

    override fun exit(button: Button): Action {
        return ScaleTo(button.actor, 0.1, initialScale, Eases.easeIn)
    }

}

class PostcardButtonEffects : ScaleButtonEffects( 1.2 ) {

    override fun clicked(button: Button): Action {
        return TurnBy(button.actor.direction, 0.5, Angle.degrees(10), Eases.easeIn) and
            ScaleTo(button.actor, 0.5, initialScale * 1.5, Eases.easeIn)
    }

}

class MenuButtonEffects : ScaleButtonEffects( 1.2 ) {

    override fun clicked(button: Button): Action {
        return ScaleTo(button.actor, 0.7, initialScale, Eases.easeOut) and
            TurnBy(button.actor.direction, 0.65, button.actor.direction + Angle.degrees(2 * 360.0), Eases.easeOutBack)
    }
}

class GameButtonEffects : ScaleButtonEffects( 1.2 ) {

}