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241(function($) {
// CATSWEEPER CLASS DEFINITION
// ===========================
var Catsweeper = function(element, options) {
this.$element = $(element);
this.options = $.extend({}, Catsweeper.DEFAULTS, options);
this.catdex = []; //indices of placed cats
this.counts = {}; //neighboring cat counts
this.$cells = null; //1-dimensional array representation
this.$element
.on('click', 'a.cell', $.proxy(this.click, this))
.on('start', $.proxy(this.start, this));
this.render();
}
Catsweeper.DEFAULTS = {
rows: 8,
columns: 8,
cats: 10
};
// rendering
// =========
Catsweeper.prototype.render = function() {
var size = this.options.rows * this.options.columns;
var cells = (new Array(size+1)).join('<a class="cell"></a>');
this.$element.html('<div class="catgrid">' + cells + '</div>');
this.$cells = $('a.cell', this.$element);
return this.resize();
};
Catsweeper.prototype.resize = function() {
var width = this.$cells[0].offsetWidth;
var height = this.$cells[0].offsetHeight;
this.$cells.parent()
.width(this.options.columns * width)
.height(this.options.rows * height);
//force new game upon resize
this.$element.trigger('start');
return this;
};
Catsweeper.prototype.reset = function() {
this.$element.removeClass('win fail');
this.$cells.removeClass('seen fail cat').html('');
return this;
};
// gamedata
// ========
Catsweeper.prototype.catify = function() {
var rows = this.options.rows;
var columns = this.options.columns;
var cats = this.options.cats;
var catdex = [];
for (var i=0, n=rows*columns; i<n; i++) {
catdex[i] = i;
}
//shuffles
for (var i=0, n=rows*columns; i<n; i++) {
var rand = Math.floor(Math.random() * (i+1));
var value = catdex[i];
catdex[i] = catdex[rand];
catdex[rand] = value;
};
return catdex.slice(0, Math.max(0, cats));
};
Catsweeper.prototype.calculate = function() {
var rows = this.options.rows;
var columns = this.options.columns;
var counts = {};
for (var i=0, n=this.catdex.length; i<n; i++) {
var neighbors = getNeighbors(this.catdex[i], rows, columns);
while (neighbors.length) {
var neighbor = neighbors.pop();
if (neighbor in counts) counts[neighbor]++;
else counts[neighbor] = 1;
}
}
return counts;
};
// gameplay
// ========
Catsweeper.prototype.start = function(e) {
this.catdex = this.catify();
this.counts = this.calculate();
return this.reset();
};
Catsweeper.prototype.validate = function() {
var rows = this.options.rows;
var columns = this.options.columns;
//needs more
if (this.$cells.not('.seen').length == this.catdex.length) {
this.gameover(true);
}
return this;
};
Catsweeper.prototype.gameover = function(win) {
this.$element.addClass(win ? 'win' : 'fail');
//reveal cells
this.$cells.not('.seen').addClass(win ? 'seen' : 'fail');
//reveal cats
for (var i=0, n=this.catdex.length; i<n; i++) {
this.$cells.eq(this.catdex[i]).addClass('cat');
}
//new game
this.$element.one('click', $.proxy(this.start, this));
return this;
};
Catsweeper.prototype.click = function(e) {
var $cell = $(e.target);
var index = $cell.index();
//important
e.preventDefault();
if ($cell.hasClass('seen')) {
//do nothing
} else if ($.inArray(index, this.catdex) == -1) {
//no cat, reveal
this.reveal(index, {});
//check if won
this.validate();
} else {
//stepped on a cat, game over
this.gameover();
}
};
Catsweeper.prototype.reveal = function(index, seen) {
var rows = this.options.rows;
var columns = this.options.columns;
var $cell = this.$cells.eq(index);
seen[index] = true;
if (index in this.counts) {
$cell.addClass('seen');
//show count
$cell.html(this.counts[index]);
} else if (!$cell.hasClass('seen')) {
$cell.addClass('seen');
//expand section
var neighbors = getNeighbors(index, rows, columns);
while (neighbors.length) {
var neighbor = neighbors.pop();
if (neighbor in seen) continue;
this.reveal(neighbor, seen);
}
}
}
// utils
// =====
function toIndex(x, y, columns) {
return y * columns + x;
}
function toXY(index, columns) {
return [index % columns, Math.floor(index / columns)];
}
function getNeighbors(index, rows, columns) {
var xy = toXY(index, columns);
var min = [Math.max(0, xy[0]-1), Math.max(0, xy[1]-1)];
var max = [Math.min(xy[0]+2, columns), Math.min(xy[1]+2, rows)];
var neighbors = [];
for (var y=min[1]; y<max[1]; y++) {
for (var x=min[0]; x<max[0]; x++) {
var neighbor = toIndex(x, y, columns);
if (neighbor != index) neighbors.push(neighbor);
}
}
return neighbors;
}
// CATSWEEPER PLUGIN DEFINITION
// ============================
$.fn.catsweep = function(options) {
return this.each(function() {
var $this = $(this);
var game = $this.data('cat.game');
if (!game) $this.data('cat.game', (game = new Catsweeper(this, options)));
});
};
}(jQuery));