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Blackjack.js
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Blackjack.js
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let hidden;
let dlrSum = 0, p01Sum = 0, p02Sum = 0;
let dlrAceCount = 0, p01AceCount = 0, p02AceCount = 0;
let initCounter=0;
const values = ['A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'];
const types = ['C', 'D', 'H', 'S'];
const deck = [];
function initialize() {
getDeck();
shuffle();
}
function getDeck() {
for (let i = 0; i < types.length; i++) {
for (let j = 0; j < values.length; j++) {
deck.push(values[j] + "-" + types[i]);
}
}
}
function shuffle() {
for (let i = 0; i < deck.length; i++) {
let j = Math.floor(Math.random() * deck.length);
let temp = deck[i];
deck[i] = deck[j];
deck[j] = temp;
}
}
function generateDealerCards() {
const arrCards = [];
while (dlrSum < 17) {
let card = deck.pop();
dlrSum += getValue(card);
arrCards.push(card);
}
return {
arrCards,
dlrSum
};
}
function generatePlayerCards() {
const cards = []
for (let i = 0; i < 2; i++) {
cards.push(deck.pop());
}
return cards;
}
// init dealer cards into front
function showDealerCards(delearCards) {
let i = 0
for (; i < delearCards.length - 1; i++) {
let cardImg = document.createElement("img");
cardImg.src = "./img_cards/" + delearCards[i] + ".png";
document.getElementById("dlrCards").append(cardImg);
}
hidden = delearCards[i];
}
function calculateScore(playerCards, playerId){
for (let i = 0; i < playerCards.length; i++) {
if (playerId == 1) {
p01Sum += getValue(playerCards[i]);
p01AceCount += checkingAce(playerCards[i]);
} else {
p02Sum += getValue(playerCards[i]);
p02AceCount += checkingAce(playerCards[i]);
}
}
}
// show player cards by playerId/name
function showPlayerCards(playerCards, playerId, hideCards = false) {
for (let i = 0; i < playerCards.length; i++) {
let cardImg = document.createElement("img");
if(hideCards){
cardImg.src = "./img_cards/BACK.png";
}else{
cardImg.src = "./img_cards/" + playerCards[i] + ".png";
}
if (playerId == 1) {
document.getElementById("p01Cards").append(cardImg);
} else {
document.getElementById("p02Cards").append(cardImg);
}
}
}
function cardHandler(player01Hand, player02Hand, gameIdOfBj, username, player) {
let cardImg = document.createElement("img");
let card = deck.pop();
cardImg.src = "./img_cards/" + card + ".png";
if(username == player){
p01Sum += getValue(card);
p01AceCount += checkingAce(card);
document.getElementById("p01Cards").append(cardImg);
player01Hand.push(card);
reducedAce(p01Sum, p01AceCount);
}else{
p02Sum += getValue(card);
document.getElementById("p02Cards").append(cardImg);
p02AceCount += checkingAce(card);
player02Hand.push(card);
reducedAce(p02Sum, p02AceCount);
}
updateHandsPostRequest({ player01Hand, player02Hand }, gameIdOfBj, username);
}
function setWinner(winner) {
updateWinnerRequest({ winner, gameId });
}
function btnStandClicked() {
dlrSum = reducedAce(dlrSum, dlrAceCount);
p01Sum = reducedAce(p01Sum, p01AceCount);
p02Sum = reducedAce(p02Sum, p02AceCount);
// Show all player cards without hiding
showPlayerCards(player01Hand, 1, false);
showPlayerCards(player02Hand, 2, false);
document.getElementById("hidden").src = "./img_cards/" + hidden + ".png";
let message = "";
if (dlrSum > 21) {
message = "Dealer busts. Both players win!";
} else {
if (p01Sum > 21) {
message = "Player01 busts. ";
} else if (p01Sum > dlrSum) {
message = "Player01 wins! ";
} else if (p01Sum == dlrSum) {
message = "Tie between Player01 and Dealer. ";
} else {
message = "Dealer wins against Player01. ";
}
if (p02Sum > 21) {
message = "Player02 busts. ";
} else if (p02Sum > dlrSum) {
message = "Player02 wins!";
} else if (p02Sum == dlrSum) {
message = "Tie between Player02 and Dealer.";
} else {
message = "Dealer wins against Player02.";
}
}
// let message = "";
// if(dlrSum > 21){
// message = "Both Players Win!";
// }else if(p01Sum == dlrSum && p02Sum == dlrSum){
// message = "Tie!";
// }else if(p01Sum == dlrSum && p02Sum < dlrSum){
// message = "Tie between Player01 and Dealer!";
// }else if(p02Sum == dlrSum && p01Sum < dlrSum){
// message = "Tie between Player02 and Dealer!";
// }
// else if(p02Sum == dlrSum && p01Sum > dlrSum){
// message = "Player01 Wins!";
// }
// else if(p01Sum == dlrSum && p02Sum > dlrSum){
// message = "Player02 Wins!";
// }
// else if(p01Sum > dlrSum && p01Sum > p02Sum){
// message = "Player01 Wins!";
// }
// else if(p02Sum > dlrSum && p02Sum > p01Sum){
// message = "Player02 Wins!";
// }
// else if(p01Sum == p02Sum && p01Sum > dlrSum){
// message = "Tie!";
// }
// else if(dlrSum > p01Sum && dlrSum > p02Sum){
// message = "Dealer Wins!";
// }
// else if(p01Sum > p02Sum){
// message = "Player01 Wins!";
// }
// else if(p02Sum > p01Sum){
// message = "Player02 Wins!";
// }
setWinner(message);
showResults(dlrSum);
document.getElementById("pResults").innerText = message;
}
function showResults(dlrSum){
document.getElementById("dlrSum").innerText = dlrSum;
document.getElementById("p01Sum").innerText = p01Sum;
document.getElementById("p02Sum").innerText = p02Sum;
}
//function to get the numerical value of a card by splitting the string value and suit and returning the appropriate value
function getValue(card) {
let splitCard = card.split('-'); //'4-D' -> ["4", "D"]
let cardValue = splitCard[0];
if (isNaN(cardValue)) { //A J Q K
if (cardValue == "A") {
return 11;
}
return 10;
}
return parseInt(cardValue);
}
//function to check if a card is an ace and returns 1 if it is, 0 otherwise.
function checkingAce(card) {
if (card[0] == "A") {
return 1;
}
return 0;
}
//function to reduce the value of a hand if the player has aces and the hand value is over 21.
// This function returns the updated hand value.
function reducedAce(playerSum, playerAceCount) {
while (playerSum > 21 && playerAceCount > 1) {
playerSum -= 10;
playerAceCount -= 1;
}
return playerSum;
}
function resetBjParams(){
hidden = null;
dlrSum = 0;
p01Sum = 0;
p02Sum = 0;
dlrAceCount = 0;
p01AceCount = 0;
p02AceCount = 0;
document.getElementById("p01Cards").innerHTML = '';
document.getElementById("p02Cards").innerHTML = '';
document.getElementById("dlrSum").innerText = '';
document.getElementById("p01Sum").innerText = '';
document.getElementById("p02Sum").innerText = '';
document.getElementById("pResults").innerText = '';
}