class GrowButtonEffects  : ButtonEffects{

    val initialScale = Vector2(1,1)

    override fun initialise( button : Button ) {
        initialScale.set( button.actor.scale )
    }

    override fun enter( button : Button ) = ScaleTo( button.actor.scale, 0.1, initialScale * 1.2 )

    override fun exit( button : Button ) = ScaleTo( button.actor.scale, 0.3, initialScale )

}