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puzzle.html
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<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link rel="stylesheet" type="text/css" href="style2.css">
<title>Puzzle</title>
<script type="text/javascript" src="page.js"></script>
<style type="text/css">
div.box {
text-align: center;
margin: auto;
overflow: hidden;
}
div.box#board {
min-width: 60%;
-webkit-flex: 4 1 auto;
flex: 4 1 auto;
}
div.frame {
position: relative;
touch-action: none;
box-sizing: content-box;
width: calc(100% - 0.6em);
padding: calc(100% - 0.6em) 0px 0px 0px; /* padding-top is relative to parent width, so this assures fixed width/height ratio */
height: 0px;
margin: 0px auto;
border: 0.3em solid;
border-color: #899983 #CEE5C5 #CEE5C5 #899983;
background-color: #B7CCAF;
}
div.elem {
position: absolute;
touch-action: none;
box-sizing: border-box;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
font-weight: bold;
margin: 0px;
padding: 0px;
border: 0.3em solid;
-webkit-transition: color 0.2s ease-out, background-color 0.2s ease-out, border-color 0.2s ease-out,
-webkit-transform 0.2s ease-out;
transition: color 0.2s ease-out, background-color 0.2s ease-out, border-color 0.2s ease-out,
transform 0.2s ease-out;
}
div.elem p {
position: absolute;
pointer-events: none;
touch-action: none;
top: 50%;
left: 50%;
margin: 0px -50% 0px 0px;
padding: 0px;
-webkit-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
}
div.elem_placed {
background-color: #BBDDFF;
border-color: #DDEEFF #88BBEE #88BBEE #DDEEFF;
color: #FFFF00;
}
div.elem_unplaced {
background-color: #90CCB0;
border-color: #B0DDCC #66AA90 #66AA90 #B0DDCC;
color: #EEEE00;
}
div.elem_hover {
color: #FFFFFF;
background-color: #FFDDBB;
border-color: #FFEEDD #EEBB88 #EEBB88 #FFEEDD;
-webkit-transition: color 0.2s ease-out, background-color 0.2s ease-out, border-color 0.2s ease-out;
transition: color 0.2s ease-out, background-color 0.2s ease-out, border-color 0.2s ease-out;
}
@keyframes blink {
0% { opacity: 0; }
33% { opacity: 1; }
67% { opacity: 1; }
100% { opacity: 0; }
}
@-webkit-keyframes blink {
0% { opacity: 0; }
33% { opacity: 1; }
67% { opacity: 1; }
100% { opacity: 0; }
}
div#msg {
visibility: hidden;
position: absolute;
top: 50%;
left: 50%;
-webkit-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
margin: 0px -50% 0px 0px;
font-weight: bold;
font-size: 200%;
color: #BB0000;
text-shadow: 0.2em 0.2em 0.1em rgba(0, 0, 0, 0.4);
-webkit-animation: blink 2s infinite;
animation: blink 2s infinite;
}
#moves_display {
margin-bottom: 1em;
font-weight: bold;
font-size: 150%;
color: #0000FF;
text-shadow: 0px 0px 0.2em #FF0000;
}
</style>
<script type="text/javascript">
"use strict";
var columns = 5;
var rows = 5;
var cells = columns * rows;
var maxcolumns = 6;
var maxrows = 6;
var maxcells = maxcolumns * maxrows;
var elems_in_place = 0;
var moves = 0;
var shuffle_moves = 100;
var playing = false;
var w_px, h_px;
var matrix = new Array(maxrows);
var frame_elem;
var hole_elem;
var moves_display_elem;
var msg_elem;
function set_elem_pos(elem, i, j) {
var transformString = "translate(" + (j * 100) + "%, " + (i * 100) + "%)";
elem.style.webkitTransform = transformString;
elem.style.transform = transformString;
}
var Pointerinfo = function() {
this.identifier = null;
this.startx = 0;
this.starty = 0;
this.end_di = 0;
this.end_dj = 0;
this.elem_list = [];
};
Pointerinfo.prototype.start = function(identifier, startx, starty, end_di, end_dj) {
this.identifier = identifier;
this.startx = startx;
this.starty = starty;
this.end_di = end_di;
this.end_dj = end_dj;
this.elem_list = [];
};
Pointerinfo.prototype.get_dj = function(currentx) {
var dj = (currentx - this.startx) / w_px;
if (this.end_dj == 0 || (this.end_dj > 0) != (dj > 0)) {
dj = 0;
} else if (dj > 1) {
dj = 1;
} else if (dj < -1) {
dj = -1;
}
return dj;
};
Pointerinfo.prototype.get_di = function(currenty) {
var di = (currenty - this.starty) / h_px;
if (this.end_di == 0 || (this.end_di > 0) != (di > 0)) {
di = 0;
} else if (di > 1) {
di = 1;
} else if (di < -1) {
di = -1;
}
return di;
};
Pointerinfo.prototype.end = function() {
this.identifier = null;
};
Pointerinfo.prototype.is_active = function() {
return this.identifier !== null;
};
var pointerinfo = new Pointerinfo();
function pointer_down(x, y, target, pointer_id) {
var i0 = hole_elem.extra.i;
var j0 = hole_elem.extra.j;
var i1 = target.extra.i;
var j1 = target.extra.j;
if ((i1 == i0) != (j1 == j0) && !pointerinfo.is_active()) {
var end_di = (i0 > i1 ? 1 : (i0 < i1 ? -1 : 0));
var end_dj = (j0 > j1 ? 1 : (j0 < j1 ? -1 : 0));
pointerinfo.start(pointer_id, x, y, end_di, end_dj);
for (var i = i1, j = j1; (i != i0) || (j != j0); i += end_di, j += end_dj) {
var elem = matrix[i][j];
elem.extra.class_list[2] = "elem_hover";
elem.className = elem.extra.class_list.join(" ");
pointerinfo.elem_list.push(elem);
}
}
}
function pointer_move(x, y) {
var di = pointerinfo.get_di(y);
var dj = pointerinfo.get_dj(x);
for (var i = 0; i < pointerinfo.elem_list.length; i++) {
var elem = pointerinfo.elem_list[i];
set_elem_pos(elem, elem.extra.i + di, elem.extra.j + dj);
}
}
function pointer_up(x, y) {
var di = pointerinfo.get_di(y);
var dj = pointerinfo.get_dj(x);
var complete_move = (Math.abs(di) >= 0.5 || Math.abs(dj) >= 0.5);
if (complete_move) {
hole_elem.extra.i = pointerinfo.elem_list[0].extra.i;
hole_elem.extra.j = pointerinfo.elem_list[0].extra.j;
matrix[hole_elem.extra.i][hole_elem.extra.j] = hole_elem;
}
for (var i = 0; i < pointerinfo.elem_list.length; i++) {
var elem = pointerinfo.elem_list[i];
if (complete_move) {
elem.extra.i += pointerinfo.end_di;
elem.extra.j += pointerinfo.end_dj;
matrix[elem.extra.i][elem.extra.j] = elem;
if ((elem.extra.i == elem.extra.placed_i) && (elem.extra.j == elem.extra.placed_j)) {
elem.extra.class_list[1] = "elem_placed";
elems_in_place++;
} else {
if (elem.extra.class_list[1] == "elem_placed")
elems_in_place--;
elem.extra.class_list[1] = "elem_unplaced";
}
}
elem.extra.class_list[2] = "";
elem.className = elem.extra.class_list.join(" ");
set_elem_pos(elem, elem.extra.i, elem.extra.j);
}
if (complete_move) {
moves += pointerinfo.elem_list.length;
moves_display_elem.innerHTML = String(moves);
if (elems_in_place == cells - 1) {
playing = false;
msg_elem.style.visibility = "visible";
}
}
pointerinfo.end();
}
function pointer_hover(target, is_over) {
var i0 = hole_elem.extra.i;
var j0 = hole_elem.extra.j;
var i1 = target.extra.i;
var j1 = target.extra.j;
if ((i1 == i0) != (j1 == j0)) {
var end_di = (i0 > i1 ? 1 : (i0 < i1 ? -1 : 0));
var end_dj = (j0 > j1 ? 1 : (j0 < j1 ? -1 : 0));
for (var i = i1, j = j1; (i != i0) || (j != j0); i += end_di, j += end_dj) {
var elem = matrix[i][j];
elem.extra.class_list[2] = is_over ? "elem_hover" : "";
elem.className = elem.extra.class_list.join(" ");
}
}
}
function event_handler(ev) {
if (!playing) return false;
var touchobj;
switch (ev.type) {
case "mousedown":
pointer_down(ev.clientX, ev.clientY, ev.target, 0);
break;
case "mousemove":
if (pointerinfo.is_active()) {
pointer_move(ev.clientX, ev.clientY);
}
break;
case "mouseout":
case "mouseup":
if (pointerinfo.is_active()) {
pointer_up(ev.clientX, ev.clientY);
} else {
pointer_hover(ev.target, false);
}
break;
case "mouseover":
pointer_hover(ev.target, true);
break;
case "touchstart":
touchobj = ev.changedTouches[0];
pointer_down(touchobj.clientX, touchobj.clientY, touchobj.target, touchobj.identifier);
break;
case "touchmove":
if (pointerinfo.is_active()) {
for(var i = 0; i < ev.changedTouches.length; i++) {
touchobj = ev.changedTouches[i];
if (touchobj.identifier == pointerinfo.identifier) {
pointer_move(touchobj.clientX, touchobj.clientY);
break;
}
}
}
break;
case "touchcancel":
case "touchend":
if (pointerinfo.is_active()) {
for(var i = 0; i < ev.changedTouches.length; i++) {
touchobj = ev.changedTouches[i];
if (touchobj.identifier == pointerinfo.identifier) {
pointer_up(touchobj.clientX, touchobj.clientY);
break;
}
}
}
break;
}
ev.preventDefault();
ev.stopPropagation();
return false;
}
function resize_event_handler(ev) {
var rect = hole_elem.getBoundingClientRect();
w_px = rect.width;
h_px = rect.height;
frame_elem.style.fontSize = h_px/3 + "px";
}
function default_event_handler(ev) {
ev.preventDefault();
ev.stopPropagation();
return false;
}
function reset() {
var n,i,j,i0,j0,i1,j1,end_di,end_dj,x,elem,gridsize_elem;
playing = false;
msg_elem.style.visibility = "hidden";
moves = 0;
moves_display_elem.innerHTML = String(moves);
gridsize_elem = document.getElementById("gridsize");
x = gridsize_elem.options[gridsize_elem.selectedIndex].text.replace(/ /g,"").split("x");
columns = x[0];
rows = x[1];
cells = columns * rows;
// Put all used elements (including hole element) in place
for (i = 0; i < rows; i++) {
for (j = 0; j < columns; j++) {
elem = matrix[i][j] = document.getElementById("elem" + ((i*columns + j + 1) % cells));
if (elem != hole_elem) {
elem.style.visibility = "visible";
}
elem.style.width = (100 / columns) + "%";
elem.style.height = (100 / rows) + "%";
elem.extra.placed_i = i;
elem.extra.placed_j = j;
elem.extra.i = i;
elem.extra.j = j;
elem.extra.class_list[1] = "elem_placed";
elem.extra.class_list[2] = "";
elem.className = elem.extra.class_list.join(" ");
}
}
// Make all unused elements invisible
for (i = cells; i < maxcells; i++) {
elem = document.getElementById("elem" + i);
elem.style.visibility = "hidden";
set_elem_pos(elem, 0, 0);
}
// Shuffle
i0 = hole_elem.extra.i;
j0 = hole_elem.extra.j;
for (n = 0; n < shuffle_moves; n++) {
if (n & 1) {
i1 = Math.floor(Math.random() * (rows - 1));
if (i1 >= i0) i1++;
j1 = j0;
} else {
i1 = i0;
j1 = Math.floor(Math.random() * (columns - 1));
if (j1 >= j0) j1++;
}
end_di = (i0 > i1 ? 1 : (i0 < i1 ? -1 : 0));
end_dj = (j0 > j1 ? 1 : (j0 < j1 ? -1 : 0));
for (i = i0, j = j0; (i != i1) || (j != j1); i -= end_di, j -= end_dj) {
elem = matrix[i][j] = matrix[i - end_di][j - end_dj];
elem.extra.i = i;
elem.extra.j = j;
}
i0 = i1;
j0 = j1;
}
matrix[i0][j0] = hole_elem;
hole_elem.extra.i = i0;
hole_elem.extra.j = j0;
// Update properties
elems_in_place = 0;
for (i = 0; i < rows; i++) {
for (j = 0; j < columns; j++) {
elem = matrix[i][j];
if (elem != hole_elem) {
set_elem_pos(elem, i, j);
if ((elem.extra.i == elem.extra.placed_i) && (elem.extra.j == elem.extra.placed_j)) {
elem.extra.class_list[1] = "elem_placed";
elems_in_place++;
} else {
elem.extra.class_list[1] = "elem_unplaced";
}
elem.className = elem.extra.class_list.join(" ");
}
}
}
// Call resize event handler to update actual size values, but wait for a short while to allow
// the changes done here to take effect first.
setTimeout(resize_event_handler, 1);
playing = true;
}
function init() {
var i;
var elem_i;
for (i = 0; i < maxrows; i++)
matrix[i] = new Array(maxcolumns);
frame_elem = document.getElementById("frame");
hole_elem = document.getElementById("elem0");
hole_elem.style.visibility = "hidden";
moves_display_elem = document.getElementById("moves_display");
msg_elem = document.getElementById("msg");
for (i = 0; i < maxcells; i++) {
elem_i = document.getElementById("elem" + i);
elem_i.extra = new Object;
elem_i.extra.class_list = new Array("elem","elem_placed","");
elem_i.addEventListener('mousedown', event_handler, false);
elem_i.addEventListener('mousemove', event_handler, false);
elem_i.addEventListener('mouseup', event_handler, false);
elem_i.addEventListener('mouseover', event_handler, false);
elem_i.addEventListener('mouseout', event_handler, false);
elem_i.addEventListener('touchstart', event_handler, false);
elem_i.addEventListener('touchmove', event_handler, false);
elem_i.addEventListener('touchend', event_handler, false);
elem_i.addEventListener('touchcancel', event_handler, false);
elem_i.addEventListener('selectstart', default_event_handler, false); // disable text selection in MSIE
elem_i.addEventListener('click', default_event_handler, false);
elem_i.addEventListener('scroll', default_event_handler, false);
}
reset();
document.getElementById("new_game_but").addEventListener('click', reset);
window.addEventListener('resize', resize_event_handler, false);
}
window.addEventListener('load', init, false);
</script>
</head>
<body>
<div class="hcontainer vcenter">
<h1>Puzzle</h1>
<div class="box" id="board">
<div id="frame" class="frame">
<script type="text/javascript">
for (var i = 0; i < maxcells; i++) {
document.writeln("<div id='elem" + i + "' class='elem elem_placed'><p>" + i + "<\/p><\/div>");
}
</script>
<div id="msg">Game Over!</div>
</div>
</div>
<div class="box" id="control">
Your Moves: <span id="moves_display">0</span>
<p>
<button id="new_game_but" type="button" value="New Game">New Game</button>
<select id="gridsize">
<option>4 x 4
<option selected>5 x 5
<option>6 x 6
</select>
</div>
</div>
</body>
</html>