class Bullet : AbstractRole {

    @CostumeAttribute
    var speed = 10.0

    var velocity = Vector2()

    override fun tick() {
        val play = Play.instance

        actor.position += velocity
        velocity += play.shipGravity

        val deadly = play.overlappingSomethingDeadly( actor )
        if (deadly != null) {
            val role = deadly.role
            if (role is DoorButton) {
                (role as DoorButton).hit()
            }
            actor.event( "ricochet" )
            actor.die()
        }
    }

}