Animals

typealias animal = (type : String, name : String, numOfLegs : Int, voice : String, live : Bool)

class Lion {

    //Instance variables
    private var _name : String
    private var _numOfLegs : Int
    private var _voice : String
    private var _live : Bool

    //c'tor
    init(name : String) {
        self._name = name
        self._numOfLegs = 4
        self._voice = "wrrrroooorrrr"
        self._live = true
    }

    func eat(food : animal) {
        if food.type != "cow" {
            print("Can eat only cows")
        } else {
            print("Yammi")
        }
    }
    func makeSound() {
        if self._live == true {
            print(self._voice)
        }
    }
}

class Cow {

    //Instance variables
    private var _name : String
    private var _numOfLegs : Int
    private var _voice : String
    private var _live : Bool

    //c'tor
    init(name : String) {
        self._name = name
        self._numOfLegs = 4
        self._voice = "mooooo"
        self._live = true
    }
    func makeSound() {
        if self._live == true {
            print(self._voice)
        }
    }
}

class Cat {

    //Instance variables
    private var _name : String
    private var _numOfLegs : Int
    private var _voice : String
    private var _live : Bool

    //c'tor
    init(name : String) {
        self._name = name
        self._numOfLegs = 4
        self._voice = "miaaaooooo"
        self._live = true
    }

    func eat(food : animal) {
        if food.type != "Mouse" {
            print("Can eat only mice")
        } else {
            print("Yammi")
        }
    }

    func drink(food : animal) {
        if food.type != "Cow" && food.live == true {
            print("Can drink only from cows")
        }
    }

    func makeSound() {
        if self._live == true {
            print(self._voice)
        }
    }
}

class Mouse {

    //Instance variables
    private var _name : String
    private var _numOfLegs : Int
    private var _voice : String
    private var _live : Bool

    //c'tor
    init(name : String) {
        self._name = name
        self._numOfLegs = 4
        self._voice = "tsftsftsfstf"
        self._live = true
    }
    func makeSound() {
        if self._live == true {
            print(self._voice)
        }
    }
}

var lion = Lion(name : "Mufasa")
var cow : animal = ("cow", "Dolly", 4, "mooooo", true)
var jerry : animal = ("lion", "Jerry", 4, "wrrroorrr", true)
var mitsi = Cat(name : "Mitsi")

lion.eat(food: cow)
mitsi.eat(food: cow)
mitsi.drink(food: cow)
mitsi.makeSound()