HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.
In CodePen, whatever you write in the HTML editor is what goes within the <body>
tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html>
tag. If you want to add classes there that can affect the whole document, this is the place to do it.
In CodePen, whatever you write in the HTML editor is what goes within the <body>
tags in a basic HTML5 template. If you need things in the <head>
of the document, put that code here.
The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.
CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.
It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.
To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit-
or -moz-
.
We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).
Any URLs added here will be added as <link>
s in order, and before the CSS in the editor. You can use the CSS from another Pen by using its URL and the proper URL extension.
You can apply CSS to your Pen from any stylesheet on the web. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself.
You can also link to another Pen here (use the .css
URL Extension) and we'll pull the CSS from that Pen and include it. If it's using a matching preprocessor, use the appropriate URL Extension and we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.
JavaScript preprocessors can help make authoring JavaScript easier and more convenient.
Babel includes JSX processing.
Any URL's added here will be added as <script>
s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.
You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.
If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.
You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.
Search for and use JavaScript packages from npm here. By selecting a package, an import
statement will be added to the top of the JavaScript editor for this package.
Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.
All packages are different, so refer to their docs for how they work.
If you're using React / ReactDOM, make sure to turn on Babel for the JSX processing.
If active, Pens will autosave every 30 seconds after being saved once.
If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.
If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.
Visit your global Editor Settings.
<div class="outer-container">
<button class="hard-reset">Reset All</button>
<p class="score-1"><span class="points"></span><span class="name"></span></p>
<i class="points-divider">|</i>
<p class="score-2"><span class="points"></span><span class="name"></span></p>
<div class="player-one-turn">
<p></p>
</div>
<div class="player-two-turn">
<p></p>
</div>
<div class="board-container">
<div class="game-starter">
<p>Would you like to be X or O?</p>
<button class="choose-x">X</button>
<button class="choose-o">O</button>
<button class="back-button"><i class="fa fa-arrow-left"></i> Back</button>
</div>
<div class="game-choice">
<p>How do you want to play?</p>
<button class="one-player">One Player</button>
<button class="two-player">Two Player</button>
</div>
<div class="game-board">
<div class="draw-message">
<p>It was a draw..</p>
</div>
<div class="lose-message">
<p>Uh oh, you lost..</p>
</div>
<div class="win-message">
<p>You Won!!! :)</p>
</div>
<canvas id="myCanvas"></canvas>
<ul class="boxes">
</ul>
</div>
</div>
</div>
body,
html {
width: 100%;
height: 100%;
}
li {
list-style: none;
}
.outer-container {
background: rgba(240,180,135,1);
box-shadow: inset -1px 1px 7px rgba(0,0,0,.2), inset 1px -1px 7px rgba(0,0,0,.2), 1px 12px 5px rgba(0,0,0,.4), 4px 3px 8px rgba(0,0,0,.4), 5px 10px 10px rgba(0,0,0,.2), -5px 10px 10px rgba(0,0,0,.4);
position: relative;
border-radius: 10px;
width: 400px;
height: 390px;
margin: 10% auto;
padding: 40px 0 0;
}
.board-container {
width: 350px;
height: 350px;
background: rgba(40,40,40,1)
-webkit-radial-gradient(center, rgba(40,80,60,1), rgba(0,20,20,.6));
background: rgba(40,40,40,1)
-moz-radial-gradient(center, rgba(40,80,60,1), rgba(0,20,20,.6));
background: rgba(40,40,40,1)
-ms-radial-gradient(center, rgba(40,80,60,1), rgba(0,20,20,.6));
background: rgba(40,40,40,1)
radial-gradient(center, rgba(40,80,60,1), rgba(0,20,20,.6));
background-size: cover;
position: relative;
margin: 0 auto;
overflow: hidden;
}
.game-board {
width: 100%;
height: 100%;
margin: 0 auto;
position: relative;
}
.boxes {
padding: 0;
width: 100%;
height: 100%;
position: relative;
left: 12px;
top: 0;
}
.boxes li {
width: 30%;
height: 30%;
display: inline-block;
position: relative;
z-index: 1000;
margin-left: 2px;
margin-right: 2px;
overflow: hidden;
}
li i {
font-size: 6.5rem;
text-align: center;
display: block;
width: 100%;
height: 100%;
font-style: normal;
font-family: "Architects Daughter", "Helvetica", "sans-serif";
color: rgba(220,220,220,.7);
z-index: 500;
}
li span {
position: relative;
bottom: 15px;
}
/* Canvas Drawing */
#myCanvas {
width: 330px;
height: 330px;
position: absolute;
z-index: 0;
left: 10px;
top: 0;
opacity: 0;
}
/* Player/Computer prompt */
.player-one-turn {
background: rgba(0,200,200,1);
left: 15px;
}
.player-two-turn {
background: rgba(200,100,100,1);
right: 15px;
}
.player-one-turn,
.player-two-turn {
position: absolute;
top: 0;
width: 170px;
height: 50px;
z-index: -10;
color: white;
text-align: center;
}
.player-one-turn p,
.player-two-turn p {
font-size: 1.3rem;
margin-top: 10px;
}
/* Score keeping */
.points-divider,
.score-1,
.score-2 {
position: absolute;
font-size: .9rem;
margin: 0;
display: none;
}
.score-1,
.score-2 {
font-family: 'Architects Daughter', sans-serif;
top: 17px;
color: rgba(100,60,50,.8);
}
.score-1 .points,
.score-2 .points {
position: absolute;
text-align: center;
bottom: 14px;
color: rgba(100,60,50, .9);
font-family: 'Architects Daughter', sans-serif;
}
.points-divider {
top: 5px;
left: 141px;
font-size: 2rem;
font-family: helvetica, sans-serif;
font-style: normal;
opacity: .2;
}
.score-1 {
left: 75px;
}
.score-2 {
left: 161px;
}
/* reset button */
.hard-reset {
position: absolute;
top: 5px;
right: 20px;
background: none;
border: none;
font-family: 'Architects Daughter', sans-serif;
color: rgba(100,60,50,.8);
font-size: 1.1rem;
border-radius: 20px;
border: 2px dashed transparent;
display: none;
}
.hard-reset:hover {
border: 2px dashed rgba(100,60,50,1);
color: rgba(100,60,50,1);
}
.hard-reset:focus {
outline: none;
}
/* Result Feedback */
span.rotate {
color: rgba(0,200,200,1);
}
i.win {
background: black;
}
.draw-message,
.lose-message,
.win-message {
background: rgba(0,0,0,.8);
width: 400px;
height: 400px;
z-index: 2000;
position: absolute;
display: none;
top: -15px;
left: 0;
box-sizing: border-box;
}
.draw-message p,
.lose-message p,
.win-message p {
color: white;
text-align: center;
position: absolute;
font-size: 2.3rem;
margin: 0;
top: 150px;
left: 50px;
font-family: 'Architects Daughter', sans-serif;
}
/*============================================
Game Starter
============================================*/
.game-choice,
.game-starter {
background: rgba(40,40,40,1)
-webkit-radial-gradient(center, rgba(40,80,60,1), rgba(0,20,20,.6));
background: rgba(40,40,40,1)
-moz-radial-gradient(center, rgba(40,80,60,1), rgba(0,20,20,.6));
background: rgba(40,40,40,1)
-ms-radial-gradient(center, rgba(40,80,60,1), rgba(0,20,20,.6));
background: rgba(40,40,40,1)
radial-gradient(center, rgba(40,80,60,1), rgba(0,20,20,.6));
display: block;
width: 100%;
height: 500px;
position: absolute;
top: 0px;
text-align: center;
font-family: 'Architects Daughter', Helvetica, sans-serif;
z-index: 1500;
/* display: none;*/
}
.game-starter {
display: none;
}
.game-choice p,
.game-starter p {
font-size: 2.2rem;
}
.game-choice button,
.game-choice p,
.game-starter button,
.game-starter p {
color: rgba(220,220,220,1);
position: relative;
top: 50px;
margin: 10px auto;
}
.game-choice p,
.game-starter p {
max-width: 80%;
}
.game-choice button,
.game-starter button {
background: none;
border: none;
opacity: .6;
border-radius: 20px;
border: 2px solid transparent;
font-size: 1.7rem;
}
.game-starter button {
font-size: 2.8rem;
}
.game-choice button:focus,
.game-starter button:focus {
outline: none;
}
.game-choice button:hover,
.game-starter button:hover {
opacity: 1;
border: 2px dashed rgba(230,230,230,.5);
}
.game-starter button.back-button {
position: absolute;
top: 270px;
right: 130px;
font-size: 1.5rem;
border: none;
}
.game-starter .back-button:hover {
border: none;
}
button {
cursor: pointer;
}
/*============================
Win/Lose animation
==============================*/
.rotate {
-webkit-animation: rotating 2s linear infinite;
-moz-animation: rotating 2s linear infinite;
-ms-animation: rotating 2s linear infinite;
-o-animation: rotating 2s linear infinite;
animation: rotating 2s linear infinite;
}
@-webkit-keyframes rotating /* Safari and Chrome */ {
from {
-ms-transform: rotateY(0deg);
-moz-transform: rotateY(0deg);
-webkit-transform: rotateY(0deg);
-o-transform: rotateY(0deg);
transform: rotateY(0deg);
}
to {
-ms-transform: rotateY(360deg);
-moz-transform: rotateY(360deg);
-webkit-transform: rotateY(360deg);
-o-transform: rotateY(360deg);
transform: rotateY(360deg);
}
}
@keyframes rotating {
from {
-ms-transform: rotateY(0deg);
-moz-transform: rotateY(0deg);
-webkit-transform: rotateY(0deg);
-o-transform: rotateY(0deg);
transform: rotateY(0deg);
}
to {
-ms-transform: rotateY(360deg);
-moz-transform: rotateY(360deg);
-webkit-transform: rotateY(360deg);
-o-transform: rotateY(360deg);
transform: rotateY(360deg);
}
}
/*
using timeouts with loops
http://stackoverflow.com/questions/25311892/cleartimeout-for-settimeout-in-for-loop
*/
var MYAPP = MYAPP || {
gameInPlay: false,
winCombos: [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
[1, 4, 7],
[2, 5, 8],
[3, 6, 9],
[1, 5, 9],
[7, 5, 3]
],
playerOneScore: 0,
playerTwoScore: 0,
timeOuts: [],
initializeVars: function() {
this.numFilledIn = 0;
this.currentBoard = {
1: '',
2: '',
3: '',
4: '',
5: '',
6: '',
7: '',
8: '',
9: ''
};
},
initializeGame: function() {
MYAPP.initializeVars();
MYAPP.display.drawBoard();
$('.game-choice button').click(function() {
MYAPP.secondPlayer = MYAPP.game.gameSelection(this);
MYAPP.display.hideGameChoice();
MYAPP.display.showGameStarter(MYAPP.secondPlayer);
$('.game-starter .choose-x, .game-starter .choose-o').off().click(MYAPP.game.firstGame);
$('.back-button').on('click', function() {
MYAPP.display.hideGameStarter();
MYAPP.display.showGameChoice();
});
});
$('.hard-reset').on('click', MYAPP.game.resetGame);
}
};
/*=========================
Display functions
==========================*/
MYAPP.display = {
hideGameStarter: function() {
$('.game-starter').fadeOut();
},
showGameStarter: function(isTwoPlayer) {
var message;
if (isTwoPlayer) {
message = "Player 1 : Would you like X or O?"
}
else {
message = "Would you like to be X or O?";
}
MYAPP.timeOuts.push(
setTimeout(function() {
$('.game-starter').fadeIn(500).children('p').text(message);
}, 700));
},
showGameChoice: function() {
$('.game-choice').fadeIn(600);
},
hideGameChoice: function() {
$('.game-choice').fadeOut(600);
},
showPlayerOnePrompt: function() {
if (MYAPP.secondPlayer) {
$('.player-one-turn p').text('Go Player 1!');
}
else {
$('.player-one-turn p').text('Your turn!');
}
$('.player-one-turn').animate({'top': '-45px'}, 500);
},
hidePlayerOnePrompt: function() {
$('.player-one-turn').animate({'top': '0'}, 500);
},
showPlayerTwoPrompt: function() {
if (MYAPP.secondPlayer) {
$('.player-two-turn p').text('Go Player 2!');
}
else {
$('.player-two-turn p').text('Computer\'s turn');
}
$('.player-two-turn').animate({'top': '-45px'}, 500);
},
hidePlayerTwoPrompt: function() {
$('.player-two-turn').animate({'top': '0'}, 500);
},
showDrawMessage: function() {
MYAPP.timeOuts.push(
setTimeout(function() {
$('.draw-message').fadeIn(500);
}, 1500));
},
hideDrawMessage: function() {
$('.draw-message').fadeOut(1000);
},
showLoseMessage: function() {
MYAPP.timeOuts.push(
setTimeout(function() {
$('.lose-message').fadeIn(500);
}, 1500)
);
},
hideLoseMessage: function() {
$('.lose-message').fadeOut(1000);
},
showWinMessage: function() {
MYAPP.timeOuts.push(
setTimeout(function() {
$('.win-message').fadeIn(500).children('p').text("Player " + MYAPP.turn + " wins!! :D ")
}, 1500));
},
hideWinMessage: function() {
$('.win-message').fadeOut(1000);
},
drawBoard: function() {
MYAPP.timeOuts.push(setTimeout(function() {
var c = document.getElementById("myCanvas");
var canvas = c.getContext("2d");
canvas.lineWidth = 1;
canvas.strokeStyle = "#fff";
//vertical lines
canvas.beginPath();
canvas.moveTo(100, 0);
canvas.lineTo(100, 146.5);
canvas.closePath();
canvas.stroke();
canvas.beginPath();
canvas.moveTo(200, 0);
canvas.lineTo(200, 146.5);
canvas.closePath();
canvas.stroke();
// horizontal lines
canvas.lineWidth = .5;
canvas.beginPath();
canvas.moveTo(4, 48.5);
canvas.lineTo(296, 48.5);
canvas.closePath();
canvas.stroke();
canvas.beginPath();
canvas.moveTo(4, 98.5);
canvas.lineTo(296, 98.5);
canvas.closePath();
canvas.stroke();
}, 1500));
},
resetSquares: function() {
$('.boxes').html('');
for (var i = 1; i <= 9; i++) {
var box = '<li class="' + i + '"><i class="letter"><span></span></i></li>';
$(box).appendTo($('.boxes'));
}
},
showScore: function() {
if (MYAPP.secondPlayer) {
$('.score-1').children('.name').text('player 1');
$('.score-2').children('.name').text('player 2');
}
else {
$('.score-1').children('.name').text('player 1');
$('.score-2').children('.name').text('computer');
}
$('.score-1, .score-2').children('.points').text('0');
$('.score-1,.score-2, .points-divider').fadeIn();
},
updateScore: function(turn) {
var currentScore = turn === 1 ? MYAPP.playerOneScore : MYAPP.playerTwoScore;
$('.score-' + turn).children('.points').text(currentScore);
}
};
/*=========================
Game Logic
==========================*/
MYAPP.game = {
whoStarts: function() {
var random = Math.floor(Math.random() * 2 + 1);
return random;
},
gameSelection: function(item) {
if ($(item).text() === 'One Player') {
// returns what secondPlayer value to set
return false;
}
else {
return true;
}
},
firstGame: function() {
MYAPP.playerOneSymbol = $(this).text();
MYAPP.playerTwoSymbol = MYAPP.playerOneSymbol == 'X' ? 'O' : 'X';
MYAPP.turn = MYAPP.game.whoStarts();
MYAPP.display.hideGameStarter();
$('#myCanvas').animate({'opacity': '1'}, 1200);
$('.hard-reset').fadeIn(600);
MYAPP.display.showScore();
MYAPP.display.resetSquares();
MYAPP.game.play();
},
play: function() {
MYAPP.gameInPlay = true;
$('.boxes li').on('click', function() {
MYAPP.game.playerTurn(this);
});
MYAPP.timeOuts.push(
setTimeout(function(){
if (MYAPP.turn === 1) {
MYAPP.display.showPlayerOnePrompt();
}
else if (MYAPP.turn === 2) {
MYAPP.display.showPlayerTwoPrompt();
}
}, 1500),
setTimeout(function() {
if (MYAPP.turn === 2 && !MYAPP.secondPlayer) {
MYAPP.game.computerPlay();
}
}, 1200));
},
playerTurn: function(square) {
var symbol = MYAPP.turn === 1 ? MYAPP.playerOneSymbol : MYAPP.playerTwoSymbol;
var box = $(square).children('i').children('span');
if (box.text() === '' && MYAPP.gameInPlay && (MYAPP.turn === 1 || (MYAPP.turn === 2 && MYAPP.secondPlayer))) {
box.text(symbol);
var number = $(square).attr('class');
MYAPP.game.updateSquare(number, symbol);
MYAPP.game.endTurn(symbol);
}
},
computerPlay: function() {
var computer = MYAPP.computer;
//test computer move suggestion
var boxNumber;
if (computer.computerWhichMove(MYAPP.game) && MYAPP.turn === 2) {
boxNumber = computer.computerWhichMove(MYAPP.game);
var currentBox = $('.' + boxNumber).children('i');
var symbol = MYAPP.playerTwoSymbol;
MYAPP.timeOuts.push(
setTimeout(function() {
currentBox.children('span').text(symbol);
MYAPP.game.updateSquare(boxNumber, MYAPP.playerTwoSymbol);
MYAPP.game.endTurn(symbol);
}, 1000));
}
},
endTurn: function(symbol) {
MYAPP.numFilledIn = MYAPP.numFilledIn + 1;
if (MYAPP.gameInPlay) {
if (MYAPP.game.checkWin(symbol)[0]) {
MYAPP.game.updateScore(MYAPP.turn);
if (MYAPP.secondPlayer) {
MYAPP.display.showWinMessage();
}
else {
MYAPP.turn === 1 ? MYAPP.display.showWinMessage() : MYAPP.display.showLoseMessage();
}
MYAPP.gameInPlay = false;
MYAPP.game.showWinningCombination();
MYAPP.display.hidePlayerOnePrompt();
MYAPP.display.hidePlayerTwoPrompt();
MYAPP.game.reset();
}
// stop if it is a draw
else if (MYAPP.numFilledIn >= 9) {
MYAPP.gameInPlay = false;
MYAPP.display.hidePlayerOnePrompt();
MYAPP.display.hidePlayerTwoPrompt();
MYAPP.display.showDrawMessage();
MYAPP.turn = MYAPP.game.whoStarts();
MYAPP.game.reset();
} else {
if (MYAPP.turn === 1) {
MYAPP.display.hidePlayerOnePrompt();
MYAPP.display.showPlayerTwoPrompt();
MYAPP.turn = 2;
// call computer turn if no second player
if (!MYAPP.secondPlayer) {
MYAPP.game.computerPlay();
}
} else if (MYAPP.turn === 2) {
MYAPP.display.showPlayerOnePrompt();
MYAPP.display.hidePlayerTwoPrompt();
MYAPP.turn = 1;
}
}
}
},
updateSquare: function(number, symbol) {
MYAPP.currentBoard[number] = symbol;
},
checkWin: function(symbol) {
var currentBoard = MYAPP.currentBoard;
var wins = MYAPP.winCombos;
var winningCombo = [];
var winner = wins.some(function(combination) {
var winning = true;
for (var i = 0; i < combination.length; i++) {
if (currentBoard[combination[i]] !== symbol) {
winning = false;
}
}
if (winning) {
winningCombo = combination;
}
return winning;
});
return [winner, winningCombo];
},
showWinningCombination: function() {
var symbol = MYAPP.turn === 1 ? MYAPP.playerOneSymbol : MYAPP.playerTwoSymbol;
var combo = MYAPP.game.checkWin(symbol)[1];
for (var i = 0; i < combo.length; i++) {
var currentBox = '.' + combo[i];
// Black box and rotating test for winning combo
$(currentBox).children('i').addClass('win').children('span').addClass('rotate');
}
},
updateScore: function(turn) {
turn === 1 ? MYAPP.playerOneScore += 1 : MYAPP.playerTwoScore += 1;
MYAPP.display.updateScore(turn);
},
reset: function() {
MYAPP.initializeVars();
MYAPP.timeOuts.push(
setTimeout(function() {
MYAPP.display.hideDrawMessage();
MYAPP.display.hideLoseMessage();
MYAPP.display.hideWinMessage();
$('.boxes li').fadeOut();
}, 5000),
setTimeout(function(){
MYAPP.display.resetSquares();
$('.boxes li').fadeIn();
MYAPP.numFilledIn = 0;
}, 6000),
//Make sure time for next timeout is long enough
//to not cause problems after first game
setTimeout(function() {
MYAPP.gameInPlay = true;
MYAPP.game.play();
}, 6000)
);
},
resetGame: function() {
$('#myCanvas').css('opacity', '0');
$('.hard-reset').fadeOut();
$('.points-divider, .score-1, .score-2').fadeOut();
MYAPP.playerOneScore = 0;
MYAPP.playerTwoScore = 0;
MYAPP.display.resetSquares();
MYAPP.initializeVars();
MYAPP.gameInPlay = false;
MYAPP.playerOneSymbol = null;
MYAPP.playerTwoSymbol = null;
MYAPP.timeOuts.forEach(function(timer) {
clearTimeout(timer);
});
$('.draw-message, .win-message, .lose-message').hide();
MYAPP.display.hidePlayerOnePrompt();
MYAPP.display.hidePlayerTwoPrompt();
MYAPP.display.showGameChoice();
}
};
/* End Game Logic */
/*================================
Computer Move Decisions
=================================*/
MYAPP.computer = {
computerWhichMove: function () {
var move = this.winOrBlockChoice('win')[0];
if (!move) {
move = this.winOrBlockChoice('block')[0];
console.log(this.winOrBlockChoice('block'));
}
if (!move) {
move = this.doubleThreatChoice('win');
}
if (!move) {
move = this.doubleThreatChoice('block');
}
if (!move) {
move = this.firstPlay();
}
if (!move) {
move = this.playCenter();
}
if (!move) {
move = this.emptyCorner();
}
if (!move) {
move = this.emptySide();
}
move = (move && MYAPP.currentBoard[move]) === '' ? move : false;
return move;
},
winOrBlockChoice: function(choiceType, board) {
var board = board || MYAPP.currentBoard;
if (choiceType === 'win') {
var currentSymbol = MYAPP.playerTwoSymbol;
var opponentSymbol = MYAPP.playerOneSymbol;
} else if (choiceType === 'block') {
var currentSymbol = MYAPP.playerOneSymbol;
var opponentSymbol = MYAPP.playerTwoSymbol;
} else {
return;
}
var moves = [];
MYAPP.winCombos.forEach(function(combo) {
var notFound = [];
var notPlayer = true;
for (var i = 0; i < combo.length; i++) {
if (board[combo[i]] !== currentSymbol) {
if (board[combo[i]] === opponentSymbol) {
notPlayer = false;
} else {
notFound.push(combo[i]);
}
}
}
if (notFound.length === 1 && notPlayer) {
var move = notFound[0];
moves.push(move);
}
});
return moves;
},
doubleThreatChoice: function(choiceType) {
// use winChoice function to test a spot for double threat
var board = MYAPP.currentBoard;
var move;
if (choiceType === 'win') {
var currentSymbol = MYAPP.playerTwoSymbol;
var opponentSymbol = MYAPP.playerOneSymbol;
} else if (choiceType === 'block') {
var currentSymbol = MYAPP.playerOneSymbol;
var opponentSymbol = MYAPP.playerTwoSymbol;
}
// forced diagonal win on 4th move prevention
if (board[5] === currentSymbol && MYAPP.numFilledIn === 3) {
if ((board[1] === opponentSymbol && board[9] === opponentSymbol) || (board[3] === opponentSymbol && board[7] === opponentSymbol)) {
// Play an edge to block double threat
move = this.emptySide();
}
}
if (!move && board[5] === opponentSymbol && MYAPP.numFilledIn === 2) {
move = this.diagonalSecondAttack();
}
if (!move) {
// clone current board;
var testBoard = $.extend({}, board);
for (var i = 1; i <= 9; i++) {
testBoard = $.extend({}, board);
if (testBoard[i] === '') {
testBoard[i] = currentSymbol;
if (this.winOrBlockChoice(choiceType, testBoard).length >= 2) {
move = i;
}
}
}
}
return move || false;
},
diagonalSecondAttack: function() {
var board = MYAPP.currentBoard;
var comp = MYAPP.playerTwoSymbol;
var corners = [1,3,7,9];
for (var i = 0; i < corners.length; i++) {
if (board[corners[i]] === comp) {
return 10 - corners[i];
}
}
},
firstPlay: function() {
var board = MYAPP.currentBoard;
var corners = [1, 3, 7, 9];
var move;
if (MYAPP.numFilledIn === 1) {
// player plays center
if (board[5] === MYAPP.playerOneSymbol) {
var cornerNum = Math.floor(Math.random() * 4 + 1);
move = [1, 3, 7, 9][cornerNum];
}
//player plays corner, play opposite corner
else {
for (var i = 0; i < corners.length; i++) {
if (MYAPP.currentBoard[corners[i]] === MYAPP.playerOneSymbol) {
move = 5;
}
}
}
} else if (MYAPP.numFilledIn === 0) {
var cornerNum = Math.floor(Math.random() * corners.length + 1);
move = corners[cornerNum];
}
return move ? move : false;
},
playCenter: function() {
if (MYAPP.currentBoard[5] === '') {
return 5;
}
},
emptyCorner: function() {
var board = MYAPP.currentBoard;
var corners = [1, 3, 7, 9];
var move;
for (var i = 0; i < corners.length; i++) {
if (board[corners[i]] === '') {
move = corners[i];
}
}
return move || false;
},
emptySide: function() {
var sides = [2, 4, 6, 8];
for (var i = 0; i < sides.length; i++) {
if (MYAPP.currentBoard[sides[i]] === '') {
return sides[i];
}
}
return false;
}
}
/* End Computer Move Decisions */
$(document).ready(function() {
MYAPP.initializeGame();
});
/* end game initialization */
Also see: Tab Triggers