OOP exercise

submissions/kotlyar-andrey/oop_exercise/index.js

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+/* Refer to https://github.com/OleksiyRudenko/a-tiny-JS-world for the task details
+   Complete the below for code reviewers' convenience:
+
+   Code repository: https://github.com/kotlyar-andrey/a-tiny-JS-world
+   Web app: https://kotlyar-andrey.github.io/a-tiny-JS-world/
+   */
+
+class Creature {
+  constructor(species, name, gender, phrase) {
+    this._species = species;
+    this._name = name;
+    this._gender = gender;
+    this._phrase = phrase;
+    this._friends = [];
+    this._properties = ["_species", "_name", "_gender", "saying"];
+  }
+
+  getFriends() {
+    return this._friends && this._friends.length > 0
+      ? this._friends.map((friend) => friend._name).join(", ")
+      : "no friends";
+  }
+
+  setFriends(newFriends) {
+    this._friends = [...newFriends];
+  }
+
+  getSaying() {
+    return self._phrase;
+  }
+
+  setSaying(newPhrase) {
+    this._phrase = newPhrase;
+  }
+
+  addProperties(...newProperties) {
+    this._properties = [...this._properties, ...newProperties];
+  }
+
+  display() {
+    const friends = this.getFriends();
+    print(
+      this._properties
+        .map((prop) => this[prop])
+        .join("; ")
+        .concat(`; ${friends}`)
+    );
+  }
+}
+
+class HomoSapiens extends Creature {
+  constructor(species, name, gender, phrase, legs, hands) {
+    super(species, name, gender, phrase);
+    this._legs = legs;
+    this._hands = hands;
+    this.addProperties("_legs", "_hands");
+  }
+
+  get saying() {
+    return this._phrase;
+  }
+}
+
+class Animal extends Creature {
+  constructor(species, name, gender, phrase, paws, wings) {
+    super(species, name, gender, phrase);
+    this._paws = paws;
+    this._wings = wings;
+    this.addProperties("_paws", "_wings");
+  }
+
+  get saying() {
+    return this._phrase;
+  }
+}
+
+class Anomaly extends HomoSapiens {
+  constructor(species, name, gender, phrase, legs, hands, linkTo) {
+    super(species, name, gender, phrase, legs, hands);
+    this._linkTo = linkTo;
+  }
+  get saying() {
+    return this._linkTo._phrase;
+  }
+}
+
+const man = new HomoSapiens("human", "Ivan", "male", "Hello", 2, 2);
+const woman = new HomoSapiens("human", "Maria", "female", "Hi", 2, 2);
+const dog = new Animal("dog", "Bars", "male", "Woof", 4, 0);
+const cat = new Animal("cat", "Jerry", "male", "Myau", 4, 0);
+const parrot = new Animal("parrot", "Kuzya", "male", "How are you?", 2, 2);
+const woman_cat = new Anomaly("woman-cat", "Marta", "female", "", 2, 2, cat);
+const man_parrot = new Anomaly("man-parrot", "Petr", "male", "", 2, 2, parrot);
+
+man.setFriends([woman, cat, dog]);
+woman.setFriends([man, cat]);
+dog.setFriends([cat]);
+woman_cat.setFriends([man, cat]);
+
+cat.setSaying("Hello, it's me, your cat");
+
+const inhabitants = [man, woman, dog, cat, parrot, woman_cat, man_parrot];
+
+inhabitants.forEach((creature) => {
+  creature.display();
+});