class Talk( val speaker : Actor, val height : float, val seconds : double )

    : ActionRole
{
    var bubbleA : Actor = null

    var offsetX = 0

    override fun createAction() : Action {
        bubbleA = speaker.createChild( "bubble" ).apply {
            ninePatchAppearance.size.x = actor.textAppearance.width() + 20
            ninePatchAppearance.size.y = actor.textAppearance.height() + 30
            zOrder = actor.zOrder - 0.1
            color.alpha = 0.9
        }
        offsetX = -actor.textAppearance.width()/4
        return Delay( seconds ) then 
            ( Fade( actor, 0.5, 0 ) and Fade( bubbleA, 0.5, 0) ) then
            ( Kill( bubbleA ) and Kill( actor ) )
    }

    override fun tick() {
        super.tick()
        actor.direction.set( speaker.direction )
        actor.direction.degrees -= 90 // Take into account that the ship points upwards
        bubbleA.direction.set( actor.direction )

        actor.position.set( speaker.position )

        actor.moveForwards( offsetX )
        actor.moveSidewards( -height )

        bubbleA.position.set( actor.position )
        bubbleA.moveSidewards( 18 )

    }

    static fun talk( speaker : Actor, message : String , seconds : double ) {

        val talkA = speaker.createChild( "talk" )
        talkA.textAppearance.text = message
        talkA.role = Talk( speaker, 40, seconds )
    }

}