+
Hello! Here's your automated game of Blackjack! ๐ฐ
+
+ The goal is to reach 21 points, or be as close as possible.
+ Each player, including the dealer, is first dealt 2 cards each.
+
+
+ Then, draw extra cards if you need.
+ However, your points cannot be lower than 16 before the game ends.
+
+
+ So sit tight, play smart, and have fun! ๐ค
+
+
+ Press "submit" to receive your cards. ๐
+
@@ -149,6 +201,12 @@
// Reset input value
input.value = "";
+
+ // Hide game instructions text once the game starts
+ var instructions = document.querySelectorAll(".instruction-text");
+ for (var i = 0; i < instructions.length; i += 1) {
+ instructions[i].classList.add("hidden-text");
+ }
});
diff --git a/script.js b/script.js
index bbe8a293..3d02bba2 100644
--- a/script.js
+++ b/script.js
@@ -1,4 +1,363 @@
+//This ia a game of Blacjack!
+//Assumes two users, player vs. dealer
+//Allows player and dealer to hit or stand
+//Calculates Blackjack win
+
+//2 users; player vs. dealer (computer)
+var player = "Player";
+var dealer = "Dealer";
+var playerHand = [];
+var dealerHand = [];
+var gameDeck = [];
+
+//Modes to run the game
+//1) Start game, 2) Calculate cards, 3) Player decides hit or stand, 4) Show results
+var modeGameStart = "start game";
+var modeCalculateValues = "calculate values of cards";
+var modePlayerHitStand = "player hit or stand";
+var modeShowResults = "show results";
+
+//Start the game
+var currentGameMode = modeGameStart;
+
+//<----- DECK FUNCTIONS ----->
+
+//Function to create a deck of cards
+var createDeck = function () {
+ var suits = ["Hearts", "Diamonds", "Clubs", "Spades"];
+ var ranks = [
+ "2",
+ "3",
+ "4",
+ "5",
+ "6",
+ "7",
+ "8",
+ "9",
+ "10",
+ "J",
+ "Q",
+ "K",
+ "A",
+ ];
+ var deck = [];
+
+ for (var suitIndex = 0; suitIndex < suits.length; suitIndex++) {
+ for (var rankIndex = 0; rankIndex < ranks.length; rankIndex++) {
+ var card = {
+ rank: ranks[rankIndex],
+ suit: suits[suitIndex],
+ };
+
+ //Assign value to the card
+ if (
+ ranks[rankIndex] === "J" ||
+ ranks[rankIndex] === "Q" ||
+ ranks[rankIndex] === "K"
+ ) {
+ card.value = 10;
+ } else if (ranks[rankIndex] === "A") {
+ card.value = 11;
+ } else {
+ card.value = parseInt(ranks[rankIndex]);
+ }
+
+ deck.push(card);
+ }
+ }
+
+ return deck;
+};
+
+//Function to shuffle deck that is created by swapping card's position with another card in the deck, loops through the entire deck until all cards are shuffled
+
+var shuffleDeck = function (shuffle) {
+ // n is defined as the number of cards in the deck
+ var n = shuffle.length;
+ while (n > 1) {
+ // Generate a random index between 0 and n (n > 1 so that while loop continues as long as n is greater than 1)
+ // Math.random times n gives random number between 0 (inclusive) and n (exclusive), Math.floor to round down to integer
+ //Then, n-- decrements the value of n after it's been used, ensuring that the random index will always be between 0 and n-1.
+ var randomIndex = Math.floor(Math.random() * n--);
+ //Temporarily stores the card at position 'n'
+ var temp = shuffle[n];
+ //Swap the current card with the card at the random index
+ shuffle[n] = shuffle[randomIndex];
+ shuffle[randomIndex] = temp;
+ }
+ return shuffle;
+};
+
+//Function to create AND shuffle deck
+var prepareDeck = function () {
+ var myDeck = createDeck();
+ var shuffledDeck = shuffleDeck(myDeck);
+ return shuffledDeck;
+};
+
+//Function to deal cards
+//Use pop to hand out cards from deck (gameDeck)
+//Use push to add to respective arrays (hand)
+var dealCards = function (hand, numCards) {
+ for (var i = 0; i < numCards; i++) {
+ hand.push(gameDeck.pop());
+ }
+};
+
+//<----- GAME FUNCTIONS ----->
+
+//Check for Blackjack scenario first, because if player or dealer has Blackjack, automatically wins the game
+var checkForBlackjack = function (handArray) {
+ var userCardOne = handArray[0];
+ var userCardTwo = handArray[1];
+ var isBlackjack = false;
+
+ var isTenCard = function (rank) {
+ return rank === "10" || rank === "J" || rank === "Q" || rank === "K";
+ };
+
+ if (
+ (userCardOne.rank === "A" && isTenCard(userCardTwo.rank)) ||
+ (userCardTwo.rank === "A" && isTenCard(userCardOne.rank))
+ ) {
+ isBlackjack = true;
+ }
+ return isBlackjack;
+};
+
+//Calculate total value of hand
+//Ace has assigned value of 11 unless total score becomes > 21, then assume value of 1
+
+var calculateHandValue = function (handArray) {
+ var handValue = 0;
+ var hasAce = false;
+
+ // Calculate the initial hand value
+ for (var i = 0; i < handArray.length; i++) {
+ var cardValue = handArray[i].value;
+ handValue += cardValue;
+ if (handArray[i].rank === "A") {
+ hasAce = true;
+ }
+ }
+
+ // If hand value exceeds 21 and there's an Ace, reduce Ace's value from 11 to 1
+ if (handValue > 21 && hasAce) {
+ handValue -= 10;
+ }
+
+ return handValue;
+};
+
+//Function to show player's hands and value
+var displayPlayerHandValue = function (playerHandArray) {
+ var playerHandMessage = "Player's hand:
";
+ var playerValue = calculateHandValue(playerHandArray);
+
+ // Loop through each card in the player's hand
+ for (var i = 0; i < playerHandArray.length; i++) {
+ var card = playerHandArray[i];
+ playerHandMessage += `${card.rank} of ${card.suit}`;
+ // Add emoji based on the suit
+ if (card.suit === "Hearts") {
+ playerHandMessage += "โค๏ธ";
+ } else if (card.suit === "Diamonds") {
+ playerHandMessage += "๐";
+ } else if (card.suit === "Clubs") {
+ playerHandMessage += "๐";
+ } else if (card.suit === "Spades") {
+ playerHandMessage += "๐งน";
+ }
+ playerHandMessage += "
";
+ }
+ // Shows total value of hand
+ var playerValueMessage = `Player's value: ${playerValue}
`;
+
+ return playerHandMessage + "
" + playerValueMessage + "
";
+};
+
+//Function to show dealer's hands and values
+var displayDealerHandValue = function (dealerHandArray) {
+ var dealerHandMessage = "Dealer's hand:
";
+ var dealerValue = calculateHandValue(dealerHandArray);
+
+ // Loop through each card in the dealer's hand
+ for (var i = 0; i < dealerHandArray.length; i++) {
+ var card = dealerHandArray[i];
+ dealerHandMessage += `${card.rank} of ${card.suit}`;
+ // Add emoji based on the suit
+ if (card.suit === "Hearts") {
+ dealerHandMessage += " โค๏ธ";
+ } else if (card.suit === "Diamonds") {
+ dealerHandMessage += "๐";
+ } else if (card.suit === "Clubs") {
+ dealerHandMessage += "๐";
+ } else if (card.suit === "Spades") {
+ dealerHandMessage += "๐งน";
+ }
+ dealerHandMessage += "
";
+ }
+ //Shows total value of hand
+ var dealerValueMessage = `Dealer's value: ${dealerValue}`;
+
+ return dealerHandMessage + "
" + dealerValueMessage;
+};
+
+//<----- MAIN FUNCTION (YAY!) ----->
+
var main = function (input) {
- var myOutputValue = 'hello world';
- return myOutputValue;
+ var outputMessage = "";
+
+ // Check if user inputs "reset" to restart the game
+ if (input.toLowerCase() === "reset") {
+ // Reset all game variables to their initial values
+ gameDeck = [];
+ playerHand = [];
+ dealerHand = [];
+ currentGameMode = modeGameStart;
+
+ // Inform the player that the game has been reset
+ outputMessage =
+ "Game has been reset. Please click 'submit' to start a new game.";
+ return outputMessage;
+ }
+
+ //Create and shuffle deck of cards
+ if (currentGameMode === modeGameStart) {
+ gameDeck = prepareDeck();
+ //Deal cards
+ dealCards(playerHand, 2);
+ dealCards(dealerHand, 2);
+
+ currentGameMode = modeCalculateValues;
+
+ outputMessage =
+ "Two cards have been dealt. Click again to view and evaluate your cards.";
+ return outputMessage;
+ }
+
+ //Run cards for Blackjack first
+ if (currentGameMode === modeCalculateValues) {
+ var playerBlackjack = checkForBlackjack(playerHand);
+ var dealerBlackjack = checkForBlackjack(dealerHand);
+ var playerMessage = displayPlayerHandValue(playerHand);
+ var dealerMessage = displayDealerHandValue(dealerHand);
+
+ //console.log: check if either user has Blackjack
+ console.log("Player hit Blackjack? " + playerBlackjack);
+ console.log("Dealer hit Blackjack? " + dealerBlackjack);
+
+ //if only player has Blackjack, player wins
+ if (playerBlackjack && !dealerBlackjack) {
+ outputMessage =
+ "Player has Blackjack! Player wins!
" +
+ playerMessage +
+ dealerMessage;
+ }
+ //if only dealer has Blackjack, dealer wins
+ else if (!playerBlackjack && dealerBlackjack) {
+ outputMessage =
+ "Dealer has Blackjack! Dealer wins!
" +
+ playerMessage +
+ dealerMessage;
+ }
+ //if both has Blackjack, it's a tie
+ else if (playerBlackjack && dealerBlackjack) {
+ outputMessage =
+ "It's a tie! Both of dealer and player has Blackjack!
" +
+ playerMessage +
+ dealerMessage;
+ }
+
+ //if neither has Blackjack, player will only get to view his cards to decide
+ else {
+ outputMessage =
+ playerMessage +
+ "No one has Blackjack. The game continues!
Please input 'hit' for another card or else, input 'stand' to end your turn and see the results of this game.";
+ currentGameMode = modePlayerHitStand;
+ }
+ return outputMessage;
+ }
+
+ //Let player decide to hit or stand
+ if (currentGameMode === modePlayerHitStand) {
+ input = input.toLowerCase();
+
+ // Check if input is empty or not "hit" or "stand"
+ if (!input || (input !== "hit" && input !== "stand")) {
+ outputMessage = "Invalid input. Please input 'hit' or 'stand'.";
+ return outputMessage;
+ }
+ var playerMessage = displayPlayerHandValue(playerHand);
+ var dealerMessage = displayDealerHandValue(dealerHand);
+
+ if (input === "hit") {
+ playerHand.push(gameDeck.pop());
+ playerMessage = displayPlayerHandValue(playerHand);
+ outputMessage =
+ playerMessage +
+ "You drew another card.
Please input 'hit' for another card or else, input 'stand' to end your turn and see the results of this game.";
+ return outputMessage;
+ }
+ //If player chooses to "stand", then dealer's turn to decide push or stand
+ //Dealer to draw extra card if value is 16 and below
+ //Once dealer's value is 17 or higher, the dealer stands
+ else if (input === "stand") {
+ while (calculateHandValue(dealerHand) < 17) {
+ dealerHand.push(gameDeck.pop());
+ dealerMessage = displayDealerHandValue(dealerHand);
+ }
+ // Calculate final values after each draw
+ var playerFinalValue = calculateHandValue(playerHand);
+ var dealerFinalValue = calculateHandValue(dealerHand);
+ console.log("Player's final value:" + playerFinalValue);
+ console.log("Dealer's final value:" + dealerFinalValue);
+
+ currentGameMode = modeShowResults;
+ }
+ }
+ //Check for bust (more than 21 in value)
+ if (currentGameMode === modeShowResults) {
+ var playerBust = playerFinalValue > 21;
+ var dealerBust = dealerFinalValue > 21;
+
+ // Check if both player and dealer bust
+ if (playerBust && dealerBust) {
+ return (
+ "It's a tie! Both player and dealer bust.
Please input 'reset' to restart the game!
" +
+ playerMessage +
+ dealerMessage
+ );
+ } else if (playerBust) {
+ return (
+ "Dealer wins! Player busts.
Please input 'reset' to restart the game!
" +
+ playerMessage +
+ dealerMessage
+ );
+ } else if (dealerBust) {
+ return (
+ "Player wins! Dealer busts.
Please input 'reset' to restart the game!
" +
+ playerMessage +
+ dealerMessage
+ );
+ }
+ }
+ //Time to decide a winner!
+ if (playerFinalValue === dealerFinalValue) {
+ outputMessage =
+ "It's a tie! Both player and dealer has the same value.
Please input 'reset' to restart the game!
" +
+ playerMessage +
+ dealerMessage;
+ } else if (playerFinalValue < dealerFinalValue) {
+ outputMessage =
+ "Dealer wins! Dealer has a higher value than player.
Please input 'reset' to restart the game!
" +
+ playerMessage +
+ dealerMessage;
+ } else {
+ outputMessage =
+ "Player wins! Player has a higher value than dealer.
Please input 'reset' to restart the game!
" +
+ playerMessage +
+ dealerMessage;
+ }
+ return outputMessage;
};
- Rocket Academy
- 