Implement the following functions and expressions into the existing code:

In the game console class add a start function. The start function should prompt the user for an email address. Use a regular expression to validate that it is a valid email address and prompt them again until they enter a valid one. Next, prompt the user to enter a credit card number. Use a regular expression to validate the credit card. Prompt them again until they enter a valid one. Once done, display the game menu.

Existing Code below:

class Game { constructor(name){ this.name = name; } }

class GameConsole{ constructor(){ this.games = []; } load(){ var gameNames = ["Zelda", "Halo", "Mario", "The God Among Us "]; for (var i = 0; i < gameNames.length; i++) { let game = new Game(gameNames[i]); this.games.push(game); } } log(){ console.log("Games Loaded:"); for (var i = 0; i < this.games.length; i++) { var name = this.games[i].name; console.log(name); } } }

let gamecon = new GameConsole(); gamecon.load(); gamecon.log();

const prompt = require('prompt-sync')();

var adventurersName = ["Captain Thomas King","George","Tim","Sarah","Mike","Edward",]; var len = 0; var Inventory = new Array(5).fill(" "); Inventory[len++] = "Food"; Inventory[len++] = "Wine"; Inventory[len++] = "Horses"; Inventory[len++] = "Medicine";

var adventurersKilled = 3; var survivors; var numberOfAdventurers = adventurersName.length;

survivors = numberOfAdventurers - adventurersKilled;

displayIntroduction(); displayMenu(); getLeader();

var user_life = 3; var user_health = 100; var correct_answer = ["1","2","3"]; var userIsCorrect; var options = [" Option 1 Enter the village hut?","Option 2 Eat the turkey leg?","Option 3 Sit on the stool?","Option 4 Talk with the shadowy figure? "];

adventurersName[0] = prompt("Enter Leader Name: ");

while (user_life>0) { user_life = game(adventurersName[0],options);

if (user_life === 0) { var play_again = prompt("Do You Want Play Again (y/n)? ");

if (play_again =="y") { user_life= 3; user_health = 100; adventurersName[0] = prompt("Enter Leader Name:"); } else { console.log("Game Ended.Bye!"); break; } }

if (user_health === 0) { user_life= user_life-1; user_health= 100; }

else{ var play_continue = prompt("Do You Want continue the Play(y/n)? "); if (play_continue == "n") { console.log("Game Ended.Bye!"); break; } } }

function getLeader(){ let name = prompt("Enter your name: "); return name; }

function game(leader,options) {

showOptions(options); userIsCorrect = 0; const input = prompt("Enter Your choice (Number) ");

for(var i=0;i

if (userIsCorrect) { console.log("Yay, you picked the right option. After you are finished, you take a look at some of the items around you and compare them to the items you already have, would you like to pick up one of them?"); console.log("Your Inventory Items: "); for(var i=0;i

if(len == 5) { console.log("Your Inventory is full!"); var swap_option = prompt("DO you want to swap(y/n):"); if(swap_option == 'y') { console.log("Your Inventory Items: "); for(var i=0;i

function showOptions(option) { console.log(option[0]); console.log(option[1]); console.log(option[2]); console.log(option[3]); }

function displayStats(user_life,name) { console.log(" Current Statistics: Leader Name: ",name," User Health: ",user_health," Lives Remaining: ",user_life); console.log("Adventurers in your party = " + survivors); }

function displayIntroduction() {

console.log("Welcome to The God Among Us "); console.log("A group of adventurers began their search for the mystical god said to live among us. In charge of the squad was " + adventurersName[0] + " who was famous for his past exploits. Along the way, the group of comrades were attacked by the god's loyal followers. The adventurers fought with bravado and strength under the tutelage of " + adventurersName[0] + " the followers were defeated but they still suffered great losses. After a headcount of the remaining squad, " + adventurersKilled + " were found to be dead which left only " + survivors + " remaining survivors. "); console.log("Current Statistics : "); console.log("Total Adventurers = " + numberOfAdventurers); console.log("Adventures Names:");

for (var i = 0; i < numberOfAdventurers; i++) console.log("\t" + adventurersName[i] + ", "); console.log("Total Killed = " + adventurersKilled); console.log("Total Survived = " + survivors);

}

function displayMenu() {

}

function doDamage() { user_health= user_health-25; console.log("Health is Lost!") }