class ThumbButton : SceneButton {

    fun isUnlocked() = DodgeEm.instance.isUnlocked( scene )

    override fun begin() {
        super.begin()
    }

    override fun activated() {
        if (actor.stage == null) return

        super.activated()
        if ( isUnlocked() ) {

            var medals = DodgeEm.instance.sceneMedals( scene )
            if ( medals > 3 ) medals = 3
            if ( medals > 0 ) {
                val medalA = actor.createChild( "medals" + medals )
                medalA.x += 60
                medalA.y -= 15
                medalA.zOrder = 200
                medalA.stage = Game.instance.scene.findStage( "glass" ) // Move it above the live thumbnail.
            }

        } else {
            val w = actor.appearance.width()
            val h = actor.appearance.height()
            actor.event( "locked" )
            enabled = false
            actor.x += (w - actor.appearance.width()) / 2
            actor.y += (h - actor.appearance.height()) / 2
        }
    }

    override fun onClicked( event :MouseEvent ) {
        if ( isUnlocked() ) {
            Game.instance.startScene( scene )
        }
    }

}