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sudoku.html
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<!doctype html>
<html>
<head>
<title>Sudoku Fun!</title>
<style>
.container {
margin-left: auto;
margin-right: auto;
padding-left: 15px;
padding-right: 15px;
}
.sudoku-container {
width: auto;
}
input.sudoku-entry {
height: inherit;
font-size: 1vw;
text-align: center;
border: 2px solid black;
border-right: none;
}
input.sudoku-entry:last-child {
border-right: 2px solid black;
}
.button-group{
margin-bottom: 10px;
}
.btn + .btn {
margin-left: 10px;
}
.btn {
-moz-user-select: none;
background-image: none;
border: 1px solid transparent;
border-radius: 4px;
cursor: pointer;
display: inline-block;
font-size: 14px;
font-weight: 400;
line-height: 1.42857;
margin-bottom: 0;
padding: 6px 12px;
text-align: center;
vertical-align: middle;
white-space: nowrap;
}
.btn-new {
background-color: #FFFFFF;
border-color: #CCCCCC;
color: #333333;
}
.btn-new:hover {
background-color: #EBEBEB;
border-color: #ADADAD;
color: #333333;
}
.btn-clear {
background-color: #D9534F;
border-color: #D43F3A;
color: #FFFFFF;
}
.btn-clear:hover{
background-color: #D2322D;
border-color: #AC2925;
color: #FFFFFF;
}
.error {
color: #D9534F !important;
}
.btn-success {
background-color: #5CB85C;
border-color: #4CAE4C;
color: #FFFFFF;
}
.btn-success:hover{
background-color: #47A447;
border-color: #398439;
color: #FFFFFF;
}
</style>
</head>
<body>
<div class="container">
<h1>Sudoku Puzzle</h1>
<div id="sudoku"></div>
</div>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script>
;( function( $, window, document, undefined ) {
'use strict';
// Create the defaults
var pluginName = 'sudoku',
defaults = {
size: 540,
difficulty: 1, // Range 1-5 default is 1 which is easy mode
showDebug: false
};
// Plugin constructor
function Sudoku( element, options ) {
this.element = element;
this.$el = $( element );
this.options = $.extend( {}, defaults, options );
this._defaults = defaults;
this._name = pluginName;
this._debug = [];
this._puzzle = new Array(81);
this.init();
}
Sudoku.prototype = {
init: function() {
var self = this;
this._getDebug().push( "Initializing plugin: " + this._name );
this._generateLayout();
$( '#new-game' ).on( "click.sudoku", function( e ){
self._getDebug().push( "Clicked: Creating a new game" );
self._generatePuzzle( self._getPuzzle() );
self._postPuzzle( self._maskPuzzle() );
self._reset();
return
});
$( '#check-game' ).on( "click.sudoku", function( e ){
self._getDebug().push( "Processing is puzzle solved" );
if( self._isSolved() ){
$( '#solving-indicator' ).html( "Successfully completed the puzzle!" );
} else {
$( '#solving-indicator' ).html( "Error in the puzzle solution!" );
}
return
});
$( 'input.sudoku-entry' ).on( "change.sudoku", function( e ){
var $objectSelf = $( this ),
currentValue = $objectSelf.val();
if( currentValue != "" && currentValue != " " ){
if( isNaN( parseFloat( currentValue) ) || parseInt( currentValue ) < 1 || parseInt( currentValue ) > 9 ){
$( '#solving-indicator' ).html( "Invalid data entered into cell" );
$objectSelf.addClass( "error" );
} else {
self._getDebug().push( "Input has been entered" );
if( $objectSelf.hasClass( "error" ) ){
$objectSelf.removeClass( "error" );
}
if( !self._doesPuzzleHaveEmpties() ){
$( '#check-game' ).trigger( "click" );
}
}
}
return
});
$( '#show-solution' ).on( "click.sudoku", function( e ){
self._getDebug().push( "Clicked: Showing solution to the game" );
if( self._getPuzzle().length != 0 ){
self._postPuzzle( self._getPuzzle(), true );
}
return
});
$( '#debug-game' ).on( "click.sudoku", function( e ){
self._getDebug().push( "Clicked: Showing debug to the game" );
var objectSelf = $( this ),
debug = "<ul>",
debugArray = self._getDebug();
$.each( debugArray, function( index ){
debug += "<li>" + debugArray[ index ] + "</li>";
})
debug += "</ul>";
$( debug ).insertAfter( '.sudoku-container' );
self._resetDebug();
return
});
$( '#new-game' ).trigger( "click" );
if( this.options.showDebug ){
$( document ).on( "click", $( '#debug-game' ).click() );
}
return
},
_reset: function(){
this._getDebug().push( "METHOD: Resetting puzzle settings" );
$( '#solving-indicator' ).html( "" );
return
},
_doesPuzzleHaveEmpties: function(){
var emptySet = $.grep( $( 'input.sudoku-entry' ), function( element ) {
return $(element).val() == "";
});
return emptySet.length > 0
},
_getDebug: function(){
return this._debug;
},
_resetDebug: function(){
this._debug = [];
},
_getPuzzle: function(){
return this._puzzle;
},
_setPuzzle: function( puzzle ){
this._puzzle = puzzle;
},
_diffPuzzle: function( puzzle ){
this._getDebug().push( "METHOD: Checking difference between solution puzzle and input puzzle" );
var currentPuzzle = this._puzzleToArray(),
uniqueToSolution =
$.grep( puzzle, function( element, index ) {
return element != currentPuzzle[ index ];
});
return uniqueToSolution.length
},
_isSolved: function(){
this._getDebug().push( "METHOD: IS SOLVED" );
return this._diffPuzzle( this._getPuzzle() ) == 0
},
_puzzleToArray: function(){
var sudokuRow = $( '.sudoku-row' ),
currentPuzzle = [];
$.each( sudokuRow, function( rowIndex, rowObject ){
var entries = $( rowObject ).find( '.sudoku-entry' );
$.each( entries, function( entryIndex, entryObject ){
currentPuzzle.push( $( entryObject ).val() );
});
});
this._getDebug().push( "METHOD: Transforming current inputs to array" );
return currentPuzzle;
},
_postPuzzle: function( puzzle, solution ){
var sudokuRow = $( '.sudoku-row' );
$.each( sudokuRow, function( rowIndex, rowObject ){
var entries = $( rowObject ).find( '.sudoku-entry' ),
entryArray = puzzle.splice( 0, 9 );
$.each( entries, function( entryIndex, entryObject ){
$( entryObject ).val( entryArray[ entryIndex ] );
if( solution ){
$( entryObject ).css( "color", "red" );
}
});
});
this._getDebug().push( "METHOD: Posting puzzle" );
return
},
_maskPuzzle: function(){
var mask = new Array( 81 ),
puzzleCopy = this._getPuzzle().slice();
// Default: For each 3x3 subsquare, pick 5 random cells
// and mask them.
for (var i = 0; i < 3; i++) {
for (var j = 0; j < 3; j++) {
for ( var k = 0; k < 5; k++ ) {
var c;
do {
c = Math.floor(Math.random() * 9);
}
while( puzzleCopy[ ( i * 3 + Math.floor(c / 3) ) * 9 + j * 3 + c % 3] == 0);
puzzleCopy[ ( i * 3 + Math.floor(c / 3) ) * 9 + j * 3 + c % 3 ] = "";
}
}
}
this._getDebug().push( "METHOD: Masking puzzle" );
return puzzleCopy
},
_generateLayout: function(){
this._getDebug().push( "METHOD: Generate grid with size: " + this.options.size + " x " + this.options.size );
var $container = $( "<div class='sudoku-container'><p id='solving-indicator'></p>" ),
$buttons = $( "<div class='button-group'><button id='new-game' class='btn btn-new'>New Puzzle</button><button id='check-game' class='btn btn-success'>Check Solution</button><button id='show-solution' class='btn btn-clear'>Show Solution</button><button id='debug-game' class='btn btn-new'>Show Debug</button></div>" ),
$row = $( "<div class='sudoku-row'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"<input class='sudoku-entry' type='text' maxlength='1'>" +
"</div>" );
$container.css({ height: this.options.size, width: this.options.size });
$row.css({ height: this.options.size / 10 });
$row.find( 'input' ).css({ width: this.options.size / 10 });
for( var rowIndex = 0; rowIndex < 9; rowIndex++ ){
$container.append( $row.attr( "id", rowIndex ).clone() );
}
this.$el.append( $container.prepend( $buttons ) );
this._getDebug().push( "METHOD: Generating puzzle layout" );
return
},
_generatePuzzle: function( puzzle ){
for (var i = 0; i < 9; i++)
for (var j = 0; j < 9; j++)
puzzle[i * 9 + j] = (i*3 + Math.floor(i/3) + j) % 9 + 1;
// randomly shuffle the numbers in the root sudoku. pick two
// numbers n1 and n2 at random. scan the board and for each
// occurence of n1, replace it with n2 and vice-versa. repeat
// several times.
var switches = 27;
for(var i = 0; i < switches; i++) {
var n1 = Math.ceil(Math.random() * 9);
var n2;
do {
n2 = Math.ceil(Math.random() * 9);
}
while(n1 == n2);
for(var row = 0; row < 9; row++) {
for(var col = 0; col < col; k++) {
if(puzzle[row * 9 + col] == n1)
puzzle[row * 9 + col] = n2;
else if(puzzle[row * 9 + col] == n2)
puzzle[row * 9 + col] = n1;
}
}
}
for (var c = 0; c < switches; c++) {
var s1 = Math.floor(Math.random() * 3);
var s2 = Math.floor(Math.random() * 3);
for(var row = 0; row < 9; row++) {
var tmp = puzzle[row * 9 + (s1 * 3 + c % 3)];
puzzle[row * 9 + (s1 * 3 + c % 3)] = puzzle[row * 9 + (s2 * 3 + c % 3)];
puzzle[row * 9 + (s2 * 3 + c % 3)] = tmp;
}
}
for (var s = 0; s < switches; s++) {
var c1 = Math.floor(Math.random() * 3);
var c2 = Math.floor(Math.random() * 3);
for(var row = 0; row < 9; row++) {
var tmp = puzzle[row * 9 + (s % 3 * 3 + c1)];
puzzle[row * 9 + (s % 3 * 3 + c1)] = puzzle[row * 9 + (s % 3 * 3 + c2)];
puzzle[row * 9 + (s % 3 * 3 + c2)] = tmp;
}
}
for (var s = 0; s < switches; s++) {
var r1 = Math.floor(Math.random() * 3);
var r2 = Math.floor(Math.random() * 3);
for(var col = 0; col < 9; col++)
{
var tmp = puzzle[(s % 3 * 3 + r1) * 9 + col];
puzzle[(s % 3 * 3 + r1) * 9 + col] = puzzle[(s % 3 * 3 + r2) * 9 + col];
puzzle[(s % 3 * 3 + r2) * 9 + col] = tmp;
}
}
// Store solution puzzle for later usage
this._setPuzzle( puzzle );
this._getDebug().push( "METHOD: Generating puzzle with transformations with number of transposes set to: " + switches );
return
}
};
// Plugin wrapper around the constructor,
// preventing against multiple instantiations
$.fn[ pluginName ] = function( option ) {
var args = arguments, result;
this.each( function() {
var $this = $(this),
data = $.data( this, 'plugin_' + pluginName ),
options = typeof option === 'object' && option;
if (!data) {
$this.data('plugin_' + pluginName, ( data = new Sudoku( this, options ) ) );
}
if (typeof option === 'string') {
result = data[ option ].apply( data, Array.prototype.slice.call( args, 1 ) );
}
});
// To enable plugin returns values
return result || this;
};
})( jQuery, window, document );
</script>
<script>
$( function() {
var puzzleOptions = {
size: 540
};
/* Sudoku Game Init */
$( '#sudoku' ).sudoku( puzzleOptions );
});
</script>
</body>
</html>