JavaScript-II/src/prototype.js at master · FJF616/JavaScript-II · GitHub

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Object oriented design is commonly used in video games. For this part of the assignment

you will be implementing several classes with their correct inheritance heirarchy.

In this file you will be creating three classes:

GameObject

createdAt

dimensions

destroy() // prototype method -> returns the string 'Game object was removed from the game.'

NPC

name

takeDamage() // prototype method -> returns the string '<object name> took damage.'

// should inherit destroy() from GameObject's prototype

Humanoid

faction

weapons

language

greet() // prototype method -> returns the string '<object name> offers a greeting in <object language>.'

// should inherit destroy() from GameObject through NPC

// should inherit takeDamage() from NPC

Inheritance chain: Humanoid -> NPC -> GameObject

Instances of Humanoid should have all of the same properties as NPC and GameObject.

Instances of NPC should have all of the same properties as GameObject.

Example:

const hamsterHuey = new Humanoid({

createdAt: new Date(),

dimensions: {

length: 2,

width: 1,

height: 1,

hp: 5,

name: 'Hamster Huey',

faction: 'Gooey Kablooie',

weapons: [

'bubblegum',

language: 'Hamsterish',

});

hamsterHuey.greet(); // returns 'Hamster Huey offers a greeting in Hamsterish'

hamsterHuey.takeDamage(); // returns 'Hamster Huey took damage.'

hamsterHuey.destroy(); // returns 'Game object was removed from the game.'

function GameObject(options) {

this.createdAt = options.createdAt;

this.dimensions = options.dimensions;

}

GameObject.prototype.destroy = function gameMessage(options) {

return ('Game object was removed from the game.');

};

function NPC(options) {

GameObject.call(this, options);

this.hp = options.hp;

this.name = options.name;

}

NPC.prototype = Object.create(GameObject.prototype);

NPC.prototype.takeDamage = function damageMessage(options) {

return (`${this.name} took damage.`);

};

function Humanoid(options) {

NPC.call(this, options);

this.faction = options.faction;

this.language = options.language;

this.weapons = options.weapons;

}

Humanoid.prototype = Object.create(NPC.prototype);

Humanoid.prototype.greet = function greetMessage(options) {

return (`${this.name} offers a greeting in ${this.language}.`);

};

const hamsterHuey = new Humanoid({

createdAt: new Date(),

dimensions: {

length: 2,

width: 1,

height: 1,

hp: 5,

name: 'Hamster Huey',

faction: 'Gooey Kablooie',

weapons: [

'bubblegum',

language: 'Hamsterish',

});

hamsterHuey.greet(); // returns 'Hamster Huey offers a greeting in Hamsterish'

hamsterHuey.takeDamage(); // returns 'Hamster Huey took damage.'

hamsterHuey.destroy(); // returns 'Game object was removed from the game.'

/* eslint-disable no-undef */

module.exports = {

GameObject,

NPC,

Humanoid,

};

JavaScript-II/src/prototype.js at master · FJF616/JavaScript-II · GitHub

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