class DripFactory : ActionRole {

    @Attribute
    var fromSeconds = 3.0

    @Attribute
    var toSeconds = 6.0


    override fun begin() {
        // Move the actor, so that it isn't overlapping a rock etc.
        // This allows us to be slap-dash in the SceneEditor, and yet we can still pick it up safely.
        val play = Play.instance
        while( play.overlappingSomethingDeadly( actor ) != null ) {
            actor.y -= 2
        }
        actor.hide()
        super.begin()
    }

    override fun createAction() : Action {

        return Delay( Rand.between(fromSeconds, toSeconds) ) thenOnce
            this:>createDrip then
            RecreateAction( this )
    }

    fun createDrip() {
        // There are two costumes "drip" and "acidDrip"
        // "drip" has two *different* child costumes (depending on the acidOption)
        // "acidDrip" has the same costume for both.
        val event = if (Options.instance.moreAcid == 0) "drip" else "dripAcid"
        actor.createChild( event )
    }
}