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121 changes: 74 additions & 47 deletions assignments/prototypes.js
Original file line number Diff line number Diff line change
@@ -1,27 +1,45 @@
/*
Object oriented design is commonly used in video games. For this part of the assignment you will be implementing several constructor functions with their correct inheritance hierarchy.
Object oriented design is commonly used in video games. For this part of the assignment you will be implementing several constructor
functions with their correct inheritance hierarchy.

In this file you will be creating three constructor functions: GameObject, CharacterStats, Humanoid.

At the bottom of this file are 3 objects that all end up inheriting from Humanoid. Use the objects at the bottom of the page to test your constructor functions.
At the bottom of this file are 3 objects that all end up inheriting from Humanoid. Use the objects at the bottom of the page
to test your constructor functions.

Each constructor function has unique properties and methods that are defined in their block comments below:
*/

/*
=== GameObject ===
* createdAt
* name
* dimensions (These represent the character's size in the video game)
* destroy() // prototype method that returns: `${this.name} was removed from the game.`
*/
function GameObject(attrs) {
this.createdAt = attrs.createdAt
this.name = attrs.name
this.dimensions = attrs.dimensions
}
GameObject.prototype.destroy = function() {
return (`${this.name} was removed from the game.`)
}

/*
=== CharacterStats ===
* healthPoints
* takeDamage() // prototype method -> returns the string '<object name> took damage.'
* should inherit destroy() from GameObject's prototype
*/
function CharacterStats(character) {
GameObject.call(this, character)
this.healthPoints = character.healthPoints
}
CharacterStats.prototype = Object.create(GameObject.prototype)
CharacterStats.prototype.takeDamage = function() {
return (`${this.name} took damage`)
}

/*
=== Humanoid (Having an appearance or character resembling that of a human.) ===
Expand All @@ -32,79 +50,88 @@
* should inherit destroy() from GameObject through CharacterStats
* should inherit takeDamage() from CharacterStats
*/

function Humanoid(human) {
CharacterStats.call(this, human)
this.team = human.team
this.weapons = human.weapons
this.language = human.language
}
Humanoid.prototype = Object.create(GameObject.prototype)
Humanoid.prototype = Object.create(CharacterStats.prototype)
Humanoid.prototype.greet = function() {
return `${this.name} offers a greeting in ${this.language}`
}

/*
* Inheritance chain: GameObject -> CharacterStats -> Humanoid
* Instances of Humanoid should have all of the same properties as CharacterStats and GameObject.
* Instances of CharacterStats should have all of the same properties as GameObject.
*/
* Inheritance chain: GameObject -> CharacterStats -> Humanoid
* Instances of Humanoid should have all of the same properties as CharacterStats and GameObject.
* Instances of CharacterStats should have all of the same properties as GameObject.
*/

// Test you work by un-commenting these 3 objects and the list of console logs below:

/*
const mage = new Humanoid({
const mage = new Humanoid({
createdAt: new Date(),
dimensions: {
length: 2,
width: 1,
height: 1,
length: 2,
width: 1,
height: 1
},
healthPoints: 5,
name: 'Bruce',
team: 'Mage Guild',
weapons: [
'Staff of Shamalama',
'Staff of Shamalama'
],
language: 'Common Tongue',
});
language: 'Common Tongue'
})

const swordsman = new Humanoid({
const swordsman = new Humanoid({
createdAt: new Date(),
dimensions: {
length: 2,
width: 2,
height: 2,
length: 2,
width: 2,
height: 2
},
healthPoints: 15,
name: 'Sir Mustachio',
team: 'The Round Table',
weapons: [
'Giant Sword',
'Shield',
'Giant Sword',
'Shield'
],
language: 'Common Tongue',
});
language: 'Common Tongue'
})

const archer = new Humanoid({
const archer = new Humanoid({
createdAt: new Date(),
dimensions: {
length: 1,
width: 2,
height: 4,
length: 1,
width: 2,
height: 4
},
healthPoints: 10,
name: 'Lilith',
team: 'Forest Kingdom',
weapons: [
'Bow',
'Dagger',
'Bow',
'Dagger'
],
language: 'Elvish',
});
language: 'Elvish'
})

console.log(mage.createdAt); // Today's date
console.log(archer.dimensions); // { length: 1, width: 2, height: 4 }
console.log(swordsman.healthPoints); // 15
console.log(mage.name); // Bruce
console.log(swordsman.team); // The Round Table
console.log(mage.weapons); // Staff of Shamalama
console.log(archer.language); // Elvish
console.log(archer.greet()); // Lilith offers a greeting in Elvish.
console.log(mage.takeDamage()); // Bruce took damage.
console.log(swordsman.destroy()); // Sir Mustachio was removed from the game.
*/
console.log(mage.createdAt); // Today's date
console.log(archer.dimensions); // { length: 1, width: 2, height: 4 }
console.log(swordsman.healthPoints) // 15
console.log(mage.name) // Bruce
console.log(swordsman.team) // The Round Table
console.log(mage.weapons) // Staff of Shamalama
console.log(archer.language) // Elvish
console.log(archer.greet()); // Lilith offers a greeting in Elvish.
console.log(mage.takeDamage()); // Bruce took damage.
console.log(swordsman.destroy()); // Sir Mustachio was removed from the game.

// Stretch task:
// * Create Villain and Hero constructor functions that inherit from the Humanoid constructor function.
// * Give the Hero and Villains different methods that could be used to remove health points from objects which could result in destruction if health gets to 0 or drops below 0;
// * Create two new objects, one a villain and one a hero and fight it out with methods!
// Stretch task:
// * Create Villain and Hero constructor functions that inherit from the Humanoid constructor function.
// * Give the Hero and Villains different methods that could be used to remove health points from objects which could result in destruction if health gets to 0 or drops below 0
// * Create two new objects, one a villain and one a hero and fight it out with methods!
64 changes: 48 additions & 16 deletions assignments/this.js
Original file line number Diff line number Diff line change
@@ -1,26 +1,58 @@
/* The for principles of "this";
* in your own words. explain the four principle for the "this" keyword below.
*
* 1.
* 2.
* 3.
* 4.
*
* write out a code example of each explanation above
*/
/* The for principles of "this"
* in your own words. explain the four principle for the "this" keyword below.
*
* 1. Global Binding
* 2. Implicit Binding
* 3. New Binding
* 4. Explicit Binding
*
* write out a code example of each explanation above
*/

// Principle 1

// code example for Window Binding
console.log(this)
// code example for Window Binding

// Principle 2

// code example for Implicit Binding
const myObj = {
greeting: 'Hello',
sayHello: function(name) {
console.log(`${this.greeting} my name is ${name}`)
console.log(this)
}
}
myObj.sayHello('Ryan')

// Principle 3

// code example for New Binding

// Principle 4

// code example for Explicit Binding
function PersonGreeter(greeter) {
this.greeting = 'Hello '
this.greeter = greeter
this.speak = function() {
console.log(this.greeting + this.greeter)
console.log(this)
}
}

const lan = new PersonGreeter('lan')
const keisha = new PersonGreeter('keisha')

lan.speak()
keisha.speak()
// Principle 4

// code example for Explicit Binding
function Person(obj) {
this.name = obj.name
this.age = obj.age
this.speak = function() {
console.log(this.name + ' ' + this.age)
}
}
const peter = new Person({ name: 'Peter', age: 60 })
const samuel = new Person({ name: 'samuel', age: 40 })
samuel.speak.call(peter)
peter.speak.apply(samuel)