Aplysia

1.article.swift

class ViewController: UIViewController {

    var aplysia: Aplysia?

    @IBAction func touchSiphon(_ sender: Any) {
        self.aplysia!.siphon.touch()
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        let gill = Gill()
        let siphon = Siphon()
        gill.neurons.append(MotorNeuron())
        siphon.neurons.append(SensoryNeuron())
        self.aplysia = Aplysia(siphon: siphon, gill: gill)
    }

}