Greg hayes

assignments/prototypes.js

@@ -7,14 +7,30 @@
 
   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: `${this.name} was removed from the game.`
+  * 
 */
+function GameObject(attribute) {
+  this.createdAt = attribute.createdAt;
+  this.name = attribute.name;
+  this.dimensions = attribute.dimensions;
+
+  //******** The below function can be abstracted with a prototype ********/
+  // this.destroy = function() {
+  //   return `${this.newName} was removed from the game.`;
+  //};
+}
+
+GameObject.prototype.destroy = function() {
+  // Protoype
+  return `${this.name} was removed from the game.`;
+};
 
 /*
   === CharacterStats ===
@@ -23,6 +39,18 @@
   * should inherit destroy() from GameObject's prototype
 */
 
+function CharacterStats(stats) {
+  GameObject.call(this, stats);
+  this.healthPoints = stats.healthPoints;
+}
+
+//Object.create() allows the constructor function to see/inherit a parent function
+CharacterStats.prototype = Object.create(GameObject.prototype);
+
+CharacterStats.prototype.takeDamage = function() {
+  // Protoype
+  return `${this.name} took damage.`;
+};
 /*
   === Humanoid (Having an appearance or character resembling that of a human.) ===
   * team
@@ -32,79 +60,87 @@
   * should inherit destroy() from GameObject through CharacterStats
   * should inherit takeDamage() from CharacterStats
 */
-
+function Humanoid(profile) {
+  CharacterStats.call(this, profile);
+  this.team = profile.team;
+  this.weapons = profile.weapons;
+  this.language = profile.language;
+
+  // *** Again abstracting with a prototype below***//
+  // this.greet = function() {
+  //   return `${this.newName} offers a greeting in ${this.newLanguage}.`;
+  // };
+}
+
+//Object.create() allows the constructor function to see/inherit a parent function
+Humanoid.prototype = Object.create(CharacterStats.prototype);
+
+Humanoid.prototype.greet = function() {
+  return `${this.newName} offers a greeting in ${this.newLanguage}.`;
+};
+
 /*
-  * 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({
-    createdAt: new Date(),
-    dimensions: {
-      length: 2,
-      width: 1,
-      height: 1,
-    },
-    healthPoints: 5,
-    name: 'Bruce',
-    team: 'Mage Guild',
-    weapons: [
-      'Staff of Shamalama',
-    ],
-    language: 'Common Tongue',
-  });
-
-  const swordsman = new Humanoid({
-    createdAt: new Date(),
-    dimensions: {
-      length: 2,
-      width: 2,
-      height: 2,
-    },
-    healthPoints: 15,
-    name: 'Sir Mustachio',
-    team: 'The Round Table',
-    weapons: [
-      'Giant Sword',
-      'Shield',
-    ],
-    language: 'Common Tongue',
-  });
-
-  const archer = new Humanoid({
-    createdAt: new Date(),
-    dimensions: {
-      length: 1,
-      width: 2,
-      height: 4,
-    },
-    healthPoints: 10,
-    name: 'Lilith',
-    team: 'Forest Kingdom',
-    weapons: [
-      'Bow',
-      'Dagger',
-    ],
-    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.
-*/
+const mage = new Humanoid({
+  createdAt: new Date(),
+  dimensions: {
+    length: 2,
+    width: 1,
+    height: 1
+  },
+  healthPoints: 5,
+  name: "Bruce",
+  team: "Mage Guild",
+  weapons: ["Staff of Shamalama"],
+  language: "Common Tongue"
+});
+
+const swordsman = new Humanoid({
+  createdAt: new Date(),
+  dimensions: {
+    length: 2,
+    width: 2,
+    height: 2
+  },
+  healthPoints: 15,
+  name: "Sir Mustachio",
+  team: "The Round Table",
+  weapons: ["Giant Sword", "Shield"],
+  language: "Common Tongue"
+});
+
+const archer = new Humanoid({
+  createdAt: new Date(),
+  dimensions: {
+    length: 1,
+    width: 2,
+    height: 4
+  },
+  healthPoints: 10,
+  name: "Lilith",
+  team: "Forest Kingdom",
+  weapons: ["Bow", "Dagger"],
+  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.
 
-  // 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!

assignments/this.js

@@ -1,26 +1,57 @@
 /* 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
-*/
+ * in your own words. explain the four principle for the "this" keyword below.
+ *
+ * 1. this is applied to Window object by default is if has no other context.
+ * 2. this is applied to whatever object is left of the '.' when we invoke the function
+ * 3. when a function is invoked w/ the 'new' keyword, this points to the new function
+ * 4. You can use .call / .apply / .bind to tell this the function to work from
+ *
+ * write out a code example of each explanation above
+ */
 
 // Principle 1
-
 // code example for Window Binding
+function Person(attribute) {
+  //   this.name = attribute.name;
+  console.log(this.says);
+}
+Person();
 
-// Principle 2
+const says = "Hello";
 
+// Principle 2
 // code example for Implicit Binding
+const user1 = {
+  name: "Greg",
+  greet() {
+    return `Hi, my name is ${this.name}.`;
+  }
+};
+//this.name will use const user as its context
+console.log(user1.greet());
 
 // Principle 3
-
 // code example for New Binding
-
+const user2 = new Person({
+  location: "Austin, TX",
+  tell() {
+    return `I live in ${this.location}.`;
+  }
+});
+console.log(user2);
 // Principle 4
 
-// code example for Explicit Binding
+// code example for Explicit Binding
+function GameObject(attribute) {
+  this.createdAt = attribute.createdAt;
+  this.name = attribute.name;
+  this.dimensions = attribute.dimensions;
+}
+
+//Using .call this function now inherits from the GameObject constructor
+function CharacterStats(stats) {
+  GameObject.call(this, stats);
+  this.healthPoints = stats.healthPoints;
+}
+
+console.log(CharacterStats());