JavaScript BlackJack Prototype
1
$begingroup$
Creating BlackJack in JavaScript and decided to jump right in to try things out first. Now I'm to the point where I want to think about the best way to organize this and maybe start with blank slate.
Specific areas:
- How to best update UI
- Incorporating the dealer hand into the Hand Class to reduce the repetitiveness
- Possibly reducing the nested IFs
- Incorporating the Split
I wasn't worried about the betting amounts/payouts/chip counts for this prototype but of course will add that.
Code:
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>BlackJack Early Prototype</title>
<style media="screen">
.flex-row{
display: flex;
flex-flow: row wrap;
justify-content: space-around;
}
</style>
</head>
<body>
<button id='deal'>deal</button>
<div class="flex-row">
<div id="dealer">
</div>
<div id="hand1">
</div>
<div id="hand2">
</div>
<div id="hand3">
</div>
</div>
<script type="text/javascript">
const suits = [
{
digit: 'H',
word: 'hearts'
},
{
digit: 'C',
word: 'clubs'
},
{
digit: 'D',
word: 'diamonds'
},
{
digit: 'S',
word: 'spades'
}
]
const cardsWithoutSuits = [
{
numeric: 11,
word: 'ace',
digit: 'A'
},
{
numeric: 2,
word: 'two',
},
{
numeric: 3,
word: 'three',
},
{
numeric: 4,
word: 'four',
},
{
numeric: 5,
word: 'five',
},
{
numeric: 6,
word: 'six',
},
{
numeric: 7,
word: 'seven',
},
{
numeric: 8,
word: 'eight',
},
{
numeric: 9,
word: 'nine',
},
{
numeric: 10,
word: 'ten',
},
{
numeric: 10,
word: 'jack',
digit: 'J'
},
{
numeric: 10,
word: 'queen',
digit: 'Q'
},
{
numeric: 10,
word: 'king',
digit: 'K'
}
]
class Hand{
constructor(bet){
// assigning the bet value
this.bet = bet;
// default values, no cards dealt yet
this.cards = ;
this.value = 0;
this.blackjack = false;
this.soft = false;
this.bust = false;
this.winner = false;
this.aceQuantity = 0;
this.canHit = false;
this.canStay = false;
this.canSplit = false;
this.canDouble = false;
this.finished = false;
this.textResult = '';
this.payout = 0;
};
evaluate(){
this.aceQuantity = this.cards.filter(x => x.word === 'ace').length;
this.value = this.cards.filter(x => x.word !== 'ace').reduce((total, x) => +total + x.numeric, 0);
this.soft = false;
for (var i = 0; i < this.aceQuantity; i++) {
if (this.value + 11 > 21) this.value += 1;
else {
this.value +=11;
if (this.value !== 21) this.soft = true;
}
}
if (this.cards.length === 2) {
this.canDouble = true;
this.canSplit = this.cards[0].word === this.cards[1].word;
} else {
this.canSplit = false;
this.canDouble = false;
}
if (this.value > 21){
this.bust = true;
this.finished = true;
this.canHit = false;
this.canStay = false;
}
if(this.value === 21){
this.finished = true;
this.canHit = false;
if (this.cards.length === 2) {
this.blackjack = true;
}
}
if (this.bust) {
this.textResult = `Busted!`;
this.payout = 0;
} else if (this.blackjack) {
this.textResult = `BlackJack!`;
} else if (game.dealerFinished) {
if (this.finished) {
if (game.dealerValue > 21) {
this.textResult = `Winner!`;
} else if (this.value > game.dealerValue) {
this.textResult = `Winner!`;
} else if (this.value === game.dealerValue) {
this.textResult = `Push`;
} else if (this.value < game.dealerValue) {
this.textResult = `Loser`;
}
}
} else {
this.textResult = `Standing on ${this.value}`;
}
}
}
function createDeck(decks = 1){
let deck = ;
for (let i = 0; i < decks; i++) {
suits.forEach( x => {
cardsWithoutSuits.forEach( y => {
deck.push({
numeric: y.numeric,
word: y.word,
suit: x.word,
phrase: `${y.word} of ${x.word}`,
abbr: `${y.hasOwnProperty('digit') ? y.digit : y.numeric}${x.digit}`
})
})
})
}
return deck;
}
function shuffle(array){
let array2 = ;
while (array.length){
let index = Math.floor(Math.random() * array.length);
let card = array.splice(index, 1);
array2.push(card[0]);
}
return array2;
}
let game = {
state: 'start',
deck: ,
dealerCards: ,
dealerFinished: false,
dealerValue: 0,
hands: ,
shuffle: function(){
this.deck = shuffle(createDeck(4));
},
deal: function(){
this.hands.forEach(x => {
x.cards.push(this.deck.shift());
x.evaluate();
});
this.dealerCards.push(this.deck.shift());
this.hands.forEach(x => {
x.cards.push(this.deck.shift());
x.evaluate();
});
this.dealerCards.push(this.deck.shift());
},
tempCreateTestHands: function(){
this.hands.push(new Hand(5));
this.hands.push(new Hand(10));
this.hands.push(new Hand(25));
},
dealCard: function(hand){
if (hand === -1) {
this.dealerCards.push(this.deck.shift());
updateUI();
} else {
this.hands[hand].cards.push(this.deck.shift());
this.hands[hand].evaluate();
}
},
tempStart: function(){
game.dealerFinished = false;
game.hands = ;
game.dealerCards = ;
if (game.deck.length < 30) game.shuffle();
game.tempCreateTestHands();
game.deal();
updateUI();
},
dealerTurn: function(){
let aceQuantity = this.dealerCards.filter(x => x.word === 'ace').length;
let value = this.dealerCards.filter(x => x.word !== 'ace').reduce((total, x) => +total + x.numeric, 0);
for (var i = 0; i < aceQuantity; i++) {
if (value + 11 > 21) value += 1;
else {
value +=11;
}
}
this.dealerValue = value;
if (value < 17) {
this.dealCard(-1);
} else {
this.dealerFinished = true;
game.hands.forEach(x => x.evaluate());
updateUI();
}
}
}
game.tempStart();
function updateUI(){
const playersUI = [document.getElementById('hand1'), document.getElementById('hand2'), document.getElementById('hand3')];
const dealer = document.getElementById('dealer');
const handsRemaining = game.hands.filter(x => !x.finished).length;
if (handsRemaining) dealer.innerHTML = `<h2>Dealer</h2><p>Card Hidden</p><p>${game.dealerCards[1].phrase}</p><p>Showing ${game.dealerCards[1].numeric}</p>`;
else dealer.innerHTML = `<h2>Dealer</h2>` + game.dealerCards.map(x => `<p>${x.phrase}</p>`).join('') + `<p>Total: ${game.dealerValue}</p>`;
if (!handsRemaining && !game.dealerFinished) {
game.dealerTurn();
}
for (var i = 0; i < game.hands.length; i++) {
let buttons = '';
if (game.hands[i].finished){
buttons += `<div>`;
if (game.hands[i].busted) buttons +=`BUSTED`;
else {
buttons += game.hands[i].textResult;
}
buttons += `</div>`
} else {
buttons += `<div>
<button class='hit' onclick="buttonHandler(${i}, 'hit')">HIT</button>
<button class='stay' onclick="buttonHandler(${i}, 'stay')">STAY</button>
`;
if (game.hands[i].canDouble) buttons +=`<button class='double' onclick="buttonHandler(${i}, 'double')">DOUBLE</button>`;
if (game.hands[i].canSplit) buttons +=`<button class='split' onclick="buttonHandler(${i}, 'split')">SPLIT</button>`;
buttons += `</div>`;
}
playersUI[i].innerHTML = `<h2>Hand ${i + 1}</h2>` + game.hands[i].cards.map(x => `<p>${x.phrase}</p>`).join('') + `<p>Total: ${game.hands[i].soft ? 'Soft' : ''} ${game.hands[i].value}</p>${buttons}`;
}
}
function buttonHandler(playerHand, action){
switch (action) {
case 'stay':
game.hands[playerHand].finished = true;
break;
case 'hit':
game.dealCard(playerHand);
break;
case 'double':
game.dealCard(playerHand);
game.hands[playerHand].finished = true;
game.hands[playerHand].bet = game.hands[playerHand].bet * 2;
break;
case 'split':
console.log(`split function not setup yet...`);
break;
default:
console.log(`error, cannot find ${action} in the switch statement.`);
}
updateUI();
}
document.getElementById("deal").onclick = function() {
// alert("hello");
game.tempStart();
}
</script>
</body>
</html>
javascript game playing-cards
asked 13 mins ago
Lou BagelLou Bagel
815
$endgroup$
add a comment |
1
$begingroup$
Creating BlackJack in JavaScript and decided to jump right in to try things out first. Now I'm to the point where I want to think about the best way to organize this and maybe start with blank slate.
Specific areas:
- How to best update UI
- Incorporating the dealer hand into the Hand Class to reduce the repetitiveness
- Possibly reducing the nested IFs
- Incorporating the Split
I wasn't worried about the betting amounts/payouts/chip counts for this prototype but of course will add that.
Code:
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>BlackJack Early Prototype</title>
<style media="screen">
.flex-row{
display: flex;
flex-flow: row wrap;
justify-content: space-around;
}
</style>
</head>
<body>
<button id='deal'>deal</button>
<div class="flex-row">
<div id="dealer">
</div>
<div id="hand1">
</div>
<div id="hand2">
</div>
<div id="hand3">
</div>
</div>
<script type="text/javascript">
const suits = [
{
digit: 'H',
word: 'hearts'
},
{
digit: 'C',
word: 'clubs'
},
{
digit: 'D',
word: 'diamonds'
},
{
digit: 'S',
word: 'spades'
}
]
const cardsWithoutSuits = [
{
numeric: 11,
word: 'ace',
digit: 'A'
},
{
numeric: 2,
word: 'two',
},
{
numeric: 3,
word: 'three',
},
{
numeric: 4,
word: 'four',
},
{
numeric: 5,
word: 'five',
},
{
numeric: 6,
word: 'six',
},
{
numeric: 7,
word: 'seven',
},
{
numeric: 8,
word: 'eight',
},
{
numeric: 9,
word: 'nine',
},
{
numeric: 10,
word: 'ten',
},
{
numeric: 10,
word: 'jack',
digit: 'J'
},
{
numeric: 10,
word: 'queen',
digit: 'Q'
},
{
numeric: 10,
word: 'king',
digit: 'K'
}
]
class Hand{
constructor(bet){
// assigning the bet value
this.bet = bet;
// default values, no cards dealt yet
this.cards = ;
this.value = 0;
this.blackjack = false;
this.soft = false;
this.bust = false;
this.winner = false;
this.aceQuantity = 0;
this.canHit = false;
this.canStay = false;
this.canSplit = false;
this.canDouble = false;
this.finished = false;
this.textResult = '';
this.payout = 0;
};
evaluate(){
this.aceQuantity = this.cards.filter(x => x.word === 'ace').length;
this.value = this.cards.filter(x => x.word !== 'ace').reduce((total, x) => +total + x.numeric, 0);
this.soft = false;
for (var i = 0; i < this.aceQuantity; i++) {
if (this.value + 11 > 21) this.value += 1;
else {
this.value +=11;
if (this.value !== 21) this.soft = true;
}
}
if (this.cards.length === 2) {
this.canDouble = true;
this.canSplit = this.cards[0].word === this.cards[1].word;
} else {
this.canSplit = false;
this.canDouble = false;
}
if (this.value > 21){
this.bust = true;
this.finished = true;
this.canHit = false;
this.canStay = false;
}
if(this.value === 21){
this.finished = true;
this.canHit = false;
if (this.cards.length === 2) {
this.blackjack = true;
}
}
if (this.bust) {
this.textResult = `Busted!`;
this.payout = 0;
} else if (this.blackjack) {
this.textResult = `BlackJack!`;
} else if (game.dealerFinished) {
if (this.finished) {
if (game.dealerValue > 21) {
this.textResult = `Winner!`;
} else if (this.value > game.dealerValue) {
this.textResult = `Winner!`;
} else if (this.value === game.dealerValue) {
this.textResult = `Push`;
} else if (this.value < game.dealerValue) {
this.textResult = `Loser`;
}
}
} else {
this.textResult = `Standing on ${this.value}`;
}
}
}
function createDeck(decks = 1){
let deck = ;
for (let i = 0; i < decks; i++) {
suits.forEach( x => {
cardsWithoutSuits.forEach( y => {
deck.push({
numeric: y.numeric,
word: y.word,
suit: x.word,
phrase: `${y.word} of ${x.word}`,
abbr: `${y.hasOwnProperty('digit') ? y.digit : y.numeric}${x.digit}`
})
})
})
}
return deck;
}
function shuffle(array){
let array2 = ;
while (array.length){
let index = Math.floor(Math.random() * array.length);
let card = array.splice(index, 1);
array2.push(card[0]);
}
return array2;
}
let game = {
state: 'start',
deck: ,
dealerCards: ,
dealerFinished: false,
dealerValue: 0,
hands: ,
shuffle: function(){
this.deck = shuffle(createDeck(4));
},
deal: function(){
this.hands.forEach(x => {
x.cards.push(this.deck.shift());
x.evaluate();
});
this.dealerCards.push(this.deck.shift());
this.hands.forEach(x => {
x.cards.push(this.deck.shift());
x.evaluate();
});
this.dealerCards.push(this.deck.shift());
},
tempCreateTestHands: function(){
this.hands.push(new Hand(5));
this.hands.push(new Hand(10));
this.hands.push(new Hand(25));
},
dealCard: function(hand){
if (hand === -1) {
this.dealerCards.push(this.deck.shift());
updateUI();
} else {
this.hands[hand].cards.push(this.deck.shift());
this.hands[hand].evaluate();
}
},
tempStart: function(){
game.dealerFinished = false;
game.hands = ;
game.dealerCards = ;
if (game.deck.length < 30) game.shuffle();
game.tempCreateTestHands();
game.deal();
updateUI();
},
dealerTurn: function(){
let aceQuantity = this.dealerCards.filter(x => x.word === 'ace').length;
let value = this.dealerCards.filter(x => x.word !== 'ace').reduce((total, x) => +total + x.numeric, 0);
for (var i = 0; i < aceQuantity; i++) {
if (value + 11 > 21) value += 1;
else {
value +=11;
}
}
this.dealerValue = value;
if (value < 17) {
this.dealCard(-1);
} else {
this.dealerFinished = true;
game.hands.forEach(x => x.evaluate());
updateUI();
}
}
}
game.tempStart();
function updateUI(){
const playersUI = [document.getElementById('hand1'), document.getElementById('hand2'), document.getElementById('hand3')];
const dealer = document.getElementById('dealer');
const handsRemaining = game.hands.filter(x => !x.finished).length;
if (handsRemaining) dealer.innerHTML = `<h2>Dealer</h2><p>Card Hidden</p><p>${game.dealerCards[1].phrase}</p><p>Showing ${game.dealerCards[1].numeric}</p>`;
else dealer.innerHTML = `<h2>Dealer</h2>` + game.dealerCards.map(x => `<p>${x.phrase}</p>`).join('') + `<p>Total: ${game.dealerValue}</p>`;
if (!handsRemaining && !game.dealerFinished) {
game.dealerTurn();
}
for (var i = 0; i < game.hands.length; i++) {
let buttons = '';
if (game.hands[i].finished){
buttons += `<div>`;
if (game.hands[i].busted) buttons +=`BUSTED`;
else {
buttons += game.hands[i].textResult;
}
buttons += `</div>`
} else {
buttons += `<div>
<button class='hit' onclick="buttonHandler(${i}, 'hit')">HIT</button>
<button class='stay' onclick="buttonHandler(${i}, 'stay')">STAY</button>
`;
if (game.hands[i].canDouble) buttons +=`<button class='double' onclick="buttonHandler(${i}, 'double')">DOUBLE</button>`;
if (game.hands[i].canSplit) buttons +=`<button class='split' onclick="buttonHandler(${i}, 'split')">SPLIT</button>`;
buttons += `</div>`;
}
playersUI[i].innerHTML = `<h2>Hand ${i + 1}</h2>` + game.hands[i].cards.map(x => `<p>${x.phrase}</p>`).join('') + `<p>Total: ${game.hands[i].soft ? 'Soft' : ''} ${game.hands[i].value}</p>${buttons}`;
}
}
function buttonHandler(playerHand, action){
switch (action) {
case 'stay':
game.hands[playerHand].finished = true;
break;
case 'hit':
game.dealCard(playerHand);
break;
case 'double':
game.dealCard(playerHand);
game.hands[playerHand].finished = true;
game.hands[playerHand].bet = game.hands[playerHand].bet * 2;
break;
case 'split':
console.log(`split function not setup yet...`);
break;
default:
console.log(`error, cannot find ${action} in the switch statement.`);
}
updateUI();
}
document.getElementById("deal").onclick = function() {
// alert("hello");
game.tempStart();
}
</script>
</body>
</html>
javascript game playing-cards
asked 13 mins ago
Lou BagelLou Bagel
815
$endgroup$
add a comment |
1
1
1
$begingroup$
Creating BlackJack in JavaScript and decided to jump right in to try things out first. Now I'm to the point where I want to think about the best way to organize this and maybe start with blank slate.
Specific areas:
- How to best update UI
- Incorporating the dealer hand into the Hand Class to reduce the repetitiveness
- Possibly reducing the nested IFs
- Incorporating the Split
I wasn't worried about the betting amounts/payouts/chip counts for this prototype but of course will add that.
Code:
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>BlackJack Early Prototype</title>
<style media="screen">
.flex-row{
display: flex;
flex-flow: row wrap;
justify-content: space-around;
}
</style>
</head>
<body>
<button id='deal'>deal</button>
<div class="flex-row">
<div id="dealer">
</div>
<div id="hand1">
</div>
<div id="hand2">
</div>
<div id="hand3">
</div>
</div>
<script type="text/javascript">
const suits = [
{
digit: 'H',
word: 'hearts'
},
{
digit: 'C',
word: 'clubs'
},
{
digit: 'D',
word: 'diamonds'
},
{
digit: 'S',
word: 'spades'
}
]
const cardsWithoutSuits = [
{
numeric: 11,
word: 'ace',
digit: 'A'
},
{
numeric: 2,
word: 'two',
},
{
numeric: 3,
word: 'three',
},
{
numeric: 4,
word: 'four',
},
{
numeric: 5,
word: 'five',
},
{
numeric: 6,
word: 'six',
},
{
numeric: 7,
word: 'seven',
},
{
numeric: 8,
word: 'eight',
},
{
numeric: 9,
word: 'nine',
},
{
numeric: 10,
word: 'ten',
},
{
numeric: 10,
word: 'jack',
digit: 'J'
},
{
numeric: 10,
word: 'queen',
digit: 'Q'
},
{
numeric: 10,
word: 'king',
digit: 'K'
}
]
class Hand{
constructor(bet){
// assigning the bet value
this.bet = bet;
// default values, no cards dealt yet
this.cards = ;
this.value = 0;
this.blackjack = false;
this.soft = false;
this.bust = false;
this.winner = false;
this.aceQuantity = 0;
this.canHit = false;
this.canStay = false;
this.canSplit = false;
this.canDouble = false;
this.finished = false;
this.textResult = '';
this.payout = 0;
};
evaluate(){
this.aceQuantity = this.cards.filter(x => x.word === 'ace').length;
this.value = this.cards.filter(x => x.word !== 'ace').reduce((total, x) => +total + x.numeric, 0);
this.soft = false;
for (var i = 0; i < this.aceQuantity; i++) {
if (this.value + 11 > 21) this.value += 1;
else {
this.value +=11;
if (this.value !== 21) this.soft = true;
}
}
if (this.cards.length === 2) {
this.canDouble = true;
this.canSplit = this.cards[0].word === this.cards[1].word;
} else {
this.canSplit = false;
this.canDouble = false;
}
if (this.value > 21){
this.bust = true;
this.finished = true;
this.canHit = false;
this.canStay = false;
}
if(this.value === 21){
this.finished = true;
this.canHit = false;
if (this.cards.length === 2) {
this.blackjack = true;
}
}
if (this.bust) {
this.textResult = `Busted!`;
this.payout = 0;
} else if (this.blackjack) {
this.textResult = `BlackJack!`;
} else if (game.dealerFinished) {
if (this.finished) {
if (game.dealerValue > 21) {
this.textResult = `Winner!`;
} else if (this.value > game.dealerValue) {
this.textResult = `Winner!`;
} else if (this.value === game.dealerValue) {
this.textResult = `Push`;
} else if (this.value < game.dealerValue) {
this.textResult = `Loser`;
}
}
} else {
this.textResult = `Standing on ${this.value}`;
}
}
}
function createDeck(decks = 1){
let deck = ;
for (let i = 0; i < decks; i++) {
suits.forEach( x => {
cardsWithoutSuits.forEach( y => {
deck.push({
numeric: y.numeric,
word: y.word,
suit: x.word,
phrase: `${y.word} of ${x.word}`,
abbr: `${y.hasOwnProperty('digit') ? y.digit : y.numeric}${x.digit}`
})
})
})
}
return deck;
}
function shuffle(array){
let array2 = ;
while (array.length){
let index = Math.floor(Math.random() * array.length);
let card = array.splice(index, 1);
array2.push(card[0]);
}
return array2;
}
let game = {
state: 'start',
deck: ,
dealerCards: ,
dealerFinished: false,
dealerValue: 0,
hands: ,
shuffle: function(){
this.deck = shuffle(createDeck(4));
},
deal: function(){
this.hands.forEach(x => {
x.cards.push(this.deck.shift());
x.evaluate();
});
this.dealerCards.push(this.deck.shift());
this.hands.forEach(x => {
x.cards.push(this.deck.shift());
x.evaluate();
});
this.dealerCards.push(this.deck.shift());
},
tempCreateTestHands: function(){
this.hands.push(new Hand(5));
this.hands.push(new Hand(10));
this.hands.push(new Hand(25));
},
dealCard: function(hand){
if (hand === -1) {
this.dealerCards.push(this.deck.shift());
updateUI();
} else {
this.hands[hand].cards.push(this.deck.shift());
this.hands[hand].evaluate();
}
},
tempStart: function(){
game.dealerFinished = false;
game.hands = ;
game.dealerCards = ;
if (game.deck.length < 30) game.shuffle();
game.tempCreateTestHands();
game.deal();
updateUI();
},
dealerTurn: function(){
let aceQuantity = this.dealerCards.filter(x => x.word === 'ace').length;
let value = this.dealerCards.filter(x => x.word !== 'ace').reduce((total, x) => +total + x.numeric, 0);
for (var i = 0; i < aceQuantity; i++) {
if (value + 11 > 21) value += 1;
else {
value +=11;
}
}
this.dealerValue = value;
if (value < 17) {
this.dealCard(-1);
} else {
this.dealerFinished = true;
game.hands.forEach(x => x.evaluate());
updateUI();
}
}
}
game.tempStart();
function updateUI(){
const playersUI = [document.getElementById('hand1'), document.getElementById('hand2'), document.getElementById('hand3')];
const dealer = document.getElementById('dealer');
const handsRemaining = game.hands.filter(x => !x.finished).length;
if (handsRemaining) dealer.innerHTML = `<h2>Dealer</h2><p>Card Hidden</p><p>${game.dealerCards[1].phrase}</p><p>Showing ${game.dealerCards[1].numeric}</p>`;
else dealer.innerHTML = `<h2>Dealer</h2>` + game.dealerCards.map(x => `<p>${x.phrase}</p>`).join('') + `<p>Total: ${game.dealerValue}</p>`;
if (!handsRemaining && !game.dealerFinished) {
game.dealerTurn();
}
for (var i = 0; i < game.hands.length; i++) {
let buttons = '';
if (game.hands[i].finished){
buttons += `<div>`;
if (game.hands[i].busted) buttons +=`BUSTED`;
else {
buttons += game.hands[i].textResult;
}
buttons += `</div>`
} else {
buttons += `<div>
<button class='hit' onclick="buttonHandler(${i}, 'hit')">HIT</button>
<button class='stay' onclick="buttonHandler(${i}, 'stay')">STAY</button>
`;
if (game.hands[i].canDouble) buttons +=`<button class='double' onclick="buttonHandler(${i}, 'double')">DOUBLE</button>`;
if (game.hands[i].canSplit) buttons +=`<button class='split' onclick="buttonHandler(${i}, 'split')">SPLIT</button>`;
buttons += `</div>`;
}
playersUI[i].innerHTML = `<h2>Hand ${i + 1}</h2>` + game.hands[i].cards.map(x => `<p>${x.phrase}</p>`).join('') + `<p>Total: ${game.hands[i].soft ? 'Soft' : ''} ${game.hands[i].value}</p>${buttons}`;
}
}
function buttonHandler(playerHand, action){
switch (action) {
case 'stay':
game.hands[playerHand].finished = true;
break;
case 'hit':
game.dealCard(playerHand);
break;
case 'double':
game.dealCard(playerHand);
game.hands[playerHand].finished = true;
game.hands[playerHand].bet = game.hands[playerHand].bet * 2;
break;
case 'split':
console.log(`split function not setup yet...`);
break;
default:
console.log(`error, cannot find ${action} in the switch statement.`);
}
updateUI();
}
document.getElementById("deal").onclick = function() {
// alert("hello");
game.tempStart();
}
</script>
</body>
</html>
javascript game playing-cards
asked 13 mins ago
Lou BagelLou Bagel
815
$endgroup$
Creating BlackJack in JavaScript and decided to jump right in to try things out first. Now I'm to the point where I want to think about the best way to organize this and maybe start with blank slate.
Specific areas:
- How to best update UI
- Incorporating the dealer hand into the Hand Class to reduce the repetitiveness
- Possibly reducing the nested IFs
- Incorporating the Split
I wasn't worried about the betting amounts/payouts/chip counts for this prototype but of course will add that.
Code:
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>BlackJack Early Prototype</title>
<style media="screen">
.flex-row{
display: flex;
flex-flow: row wrap;
justify-content: space-around;
}
</style>
</head>
<body>
<button id='deal'>deal</button>
<div class="flex-row">
<div id="dealer">
</div>
<div id="hand1">
</div>
<div id="hand2">
</div>
<div id="hand3">
</div>
</div>
<script type="text/javascript">
const suits = [
{
digit: 'H',
word: 'hearts'
},
{
digit: 'C',
word: 'clubs'
},
{
digit: 'D',
word: 'diamonds'
},
{
digit: 'S',
word: 'spades'
}
]
const cardsWithoutSuits = [
{
numeric: 11,
word: 'ace',
digit: 'A'
},
{
numeric: 2,
word: 'two',
},
{
numeric: 3,
word: 'three',
},
{
numeric: 4,
word: 'four',
},
{
numeric: 5,
word: 'five',
},
{
numeric: 6,
word: 'six',
},
{
numeric: 7,
word: 'seven',
},
{
numeric: 8,
word: 'eight',
},
{
numeric: 9,
word: 'nine',
},
{
numeric: 10,
word: 'ten',
},
{
numeric: 10,
word: 'jack',
digit: 'J'
},
{
numeric: 10,
word: 'queen',
digit: 'Q'
},
{
numeric: 10,
word: 'king',
digit: 'K'
}
]
class Hand{
constructor(bet){
// assigning the bet value
this.bet = bet;
// default values, no cards dealt yet
this.cards = ;
this.value = 0;
this.blackjack = false;
this.soft = false;
this.bust = false;
this.winner = false;
this.aceQuantity = 0;
this.canHit = false;
this.canStay = false;
this.canSplit = false;
this.canDouble = false;
this.finished = false;
this.textResult = '';
this.payout = 0;
};
evaluate(){
this.aceQuantity = this.cards.filter(x => x.word === 'ace').length;
this.value = this.cards.filter(x => x.word !== 'ace').reduce((total, x) => +total + x.numeric, 0);
this.soft = false;
for (var i = 0; i < this.aceQuantity; i++) {
if (this.value + 11 > 21) this.value += 1;
else {
this.value +=11;
if (this.value !== 21) this.soft = true;
}
}
if (this.cards.length === 2) {
this.canDouble = true;
this.canSplit = this.cards[0].word === this.cards[1].word;
} else {
this.canSplit = false;
this.canDouble = false;
}
if (this.value > 21){
this.bust = true;
this.finished = true;
this.canHit = false;
this.canStay = false;
}
if(this.value === 21){
this.finished = true;
this.canHit = false;
if (this.cards.length === 2) {
this.blackjack = true;
}
}
if (this.bust) {
this.textResult = `Busted!`;
this.payout = 0;
} else if (this.blackjack) {
this.textResult = `BlackJack!`;
} else if (game.dealerFinished) {
if (this.finished) {
if (game.dealerValue > 21) {
this.textResult = `Winner!`;
} else if (this.value > game.dealerValue) {
this.textResult = `Winner!`;
} else if (this.value === game.dealerValue) {
this.textResult = `Push`;
} else if (this.value < game.dealerValue) {
this.textResult = `Loser`;
}
}
} else {
this.textResult = `Standing on ${this.value}`;
}
}
}
function createDeck(decks = 1){
let deck = ;
for (let i = 0; i < decks; i++) {
suits.forEach( x => {
cardsWithoutSuits.forEach( y => {
deck.push({
numeric: y.numeric,
word: y.word,
suit: x.word,
phrase: `${y.word} of ${x.word}`,
abbr: `${y.hasOwnProperty('digit') ? y.digit : y.numeric}${x.digit}`
})
})
})
}
return deck;
}
function shuffle(array){
let array2 = ;
while (array.length){
let index = Math.floor(Math.random() * array.length);
let card = array.splice(index, 1);
array2.push(card[0]);
}
return array2;
}
let game = {
state: 'start',
deck: ,
dealerCards: ,
dealerFinished: false,
dealerValue: 0,
hands: ,
shuffle: function(){
this.deck = shuffle(createDeck(4));
},
deal: function(){
this.hands.forEach(x => {
x.cards.push(this.deck.shift());
x.evaluate();
});
this.dealerCards.push(this.deck.shift());
this.hands.forEach(x => {
x.cards.push(this.deck.shift());
x.evaluate();
});
this.dealerCards.push(this.deck.shift());
},
tempCreateTestHands: function(){
this.hands.push(new Hand(5));
this.hands.push(new Hand(10));
this.hands.push(new Hand(25));
},
dealCard: function(hand){
if (hand === -1) {
this.dealerCards.push(this.deck.shift());
updateUI();
} else {
this.hands[hand].cards.push(this.deck.shift());
this.hands[hand].evaluate();
}
},
tempStart: function(){
game.dealerFinished = false;
game.hands = ;
game.dealerCards = ;
if (game.deck.length < 30) game.shuffle();
game.tempCreateTestHands();
game.deal();
updateUI();
},
dealerTurn: function(){
let aceQuantity = this.dealerCards.filter(x => x.word === 'ace').length;
let value = this.dealerCards.filter(x => x.word !== 'ace').reduce((total, x) => +total + x.numeric, 0);
for (var i = 0; i < aceQuantity; i++) {
if (value + 11 > 21) value += 1;
else {
value +=11;
}
}
this.dealerValue = value;
if (value < 17) {
this.dealCard(-1);
} else {
this.dealerFinished = true;
game.hands.forEach(x => x.evaluate());
updateUI();
}
}
}
game.tempStart();
function updateUI(){
const playersUI = [document.getElementById('hand1'), document.getElementById('hand2'), document.getElementById('hand3')];
const dealer = document.getElementById('dealer');
const handsRemaining = game.hands.filter(x => !x.finished).length;
if (handsRemaining) dealer.innerHTML = `<h2>Dealer</h2><p>Card Hidden</p><p>${game.dealerCards[1].phrase}</p><p>Showing ${game.dealerCards[1].numeric}</p>`;
else dealer.innerHTML = `<h2>Dealer</h2>` + game.dealerCards.map(x => `<p>${x.phrase}</p>`).join('') + `<p>Total: ${game.dealerValue}</p>`;
if (!handsRemaining && !game.dealerFinished) {
game.dealerTurn();
}
for (var i = 0; i < game.hands.length; i++) {
let buttons = '';
if (game.hands[i].finished){
buttons += `<div>`;
if (game.hands[i].busted) buttons +=`BUSTED`;
else {
buttons += game.hands[i].textResult;
}
buttons += `</div>`
} else {
buttons += `<div>
<button class='hit' onclick="buttonHandler(${i}, 'hit')">HIT</button>
<button class='stay' onclick="buttonHandler(${i}, 'stay')">STAY</button>
`;
if (game.hands[i].canDouble) buttons +=`<button class='double' onclick="buttonHandler(${i}, 'double')">DOUBLE</button>`;
if (game.hands[i].canSplit) buttons +=`<button class='split' onclick="buttonHandler(${i}, 'split')">SPLIT</button>`;
buttons += `</div>`;
}
playersUI[i].innerHTML = `<h2>Hand ${i + 1}</h2>` + game.hands[i].cards.map(x => `<p>${x.phrase}</p>`).join('') + `<p>Total: ${game.hands[i].soft ? 'Soft' : ''} ${game.hands[i].value}</p>${buttons}`;
}
}
function buttonHandler(playerHand, action){
switch (action) {
case 'stay':
game.hands[playerHand].finished = true;
break;
case 'hit':
game.dealCard(playerHand);
break;
case 'double':
game.dealCard(playerHand);
game.hands[playerHand].finished = true;
game.hands[playerHand].bet = game.hands[playerHand].bet * 2;
break;
case 'split':
console.log(`split function not setup yet...`);
break;
default:
console.log(`error, cannot find ${action} in the switch statement.`);
}
updateUI();
}
document.getElementById("deal").onclick = function() {
// alert("hello");
game.tempStart();
}
</script>
</body>
</html>
javascript game playing-cards
javascript game playing-cards
asked 13 mins ago
Lou BagelLou Bagel
815
asked 13 mins ago
Lou BagelLou Bagel
815
asked 13 mins ago
Lou BagelLou Bagel
815
asked 13 mins ago
Lou BagelLou Bagel
815
asked 13 mins ago
Lou BagelLou Bagel
815
815
add a comment |
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