class Aufzugsteuerung {

    var position = "EG"
    var sperre = false

    fun aufwaerts() {
        if (sperre == false) {
            if (position == "EG") {
              position = "OG1"
            }
            else if (position == "OG1") {
              position = "OG2"
            }
        }
    }

    fun abwaerts() {
        if (sperre == false) {
            if (position == "OG2") {
              position = "OG1"
            }
            else if (position == "OG1") {
              position = "EG"
            }
        }
    }

    fun sperren() {
        if (sperre == false) {
          sperre = true
        }
    }

    fun entsperren() {
        if (sperre == true) {
          sperre = false
        }
    }

}