rouanth · rouanth · Jul 14, 2016 · Nov 10, 2016 · Nov 10, 2016 · Nov 15, 2016
diff --git a/classes.js b/classes.js
@@ -0,0 +1,29 @@
+function Sweep(width, height, mines) {
+	this.mines = +mines;
+	this.field = create_matrix(height, width,
+			function() { return new Cell('q') });
+}
+
+function Cell(type) {
+	function is_of_type (type) {
+		return function () {
+			return this.type === type
+		}
+	}
+
+	this.type = type;
+	this.isUnknown = is_of_type('q');
+	this.isEmpty   = is_of_type('0');
+	this.isFree    = is_of_type('f');
+	this.isBomb    = is_of_type('b');
+	this.isNumber  = function () {
+		var eln = parseInt(this.type, 10);
+		return !isNaN(eln) && (eln !== 0)
+	};
+}
+
+function Position2D(row, col) {
+	this.row = +row;
+	this.col = +col;
+	this.toString = function () { return '(' + row + ', ' + col + ')' };
+}
diff --git a/generator.js b/generator.js
@@ -0,0 +1,23 @@
+function generate (width, height, mines, seed) {
+	if (mines > elems || width <= 0 || height <= 0) {
+		return null;
+	}
+	var elems = width * height;
+
+	var coeffs_arr = [elems - mines];
+	for (var i = 1; i <= mines; ++i) {
+		coeffs_arr.push(coeffs_arr[i-1] * (elems - mines + i));
+	}
+
+	var field = create_matrix(height, width, function() { return false; });
+
+	var rest = create_map(elems, function(i) { return i; });
+	for (var i = mines - 1; i >= 0; --i) {
+		var r_idx = Math.floor(seed / coeffs_arr[i]) % rest.length;
+		var idx = rest.splice(r_idx, 1)[0];
+		field[Math.floor(idx / width)][idx % width] = true;
+		seed %= coeffs_arr[i];
+	}
+
+	return field;
+}
diff --git a/index.html b/index.html
@@ -4,8 +4,11 @@
         <meta charset="UTF-8" />
         <title>Antisweep</title>
         <link rel="stylesheet" type="text/css" href="style.css" />
+        <script src="util.js"></script>
+        <script src="classes.js"></script>
         <script src="solver.js"></script>
         <script src="sweep.js" ></script>
+        <script src="generator.js" ></script>
 </head>
 <body onload="set_initial_page()">
 <table id="main_table">