Created
December 12, 2013 11:22
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta http-equiv="X-UA-Compatible" content="IE=Edge"/> | |
<style> | |
#clock | |
{ | |
margin:0 5px 0 5px; | |
color: Blue; | |
} | |
</style> | |
</head> | |
<body onload="init(4,4)">Boxpuzzle: | |
<select onchange="changeMode(this)" id="mode"> | |
<option>Level - 1 (3x3)</option> | |
<option selected="true">Level - 2 (4x4)</option> | |
<option>Level - 3 (5x5)</option> | |
<option>Level - 4 (6x6)</option> | |
<option>Level - 5 (10x10)</option> | |
</select> | |
<div>Timer:<span id="clock">0</span> seconds<input type="button" value="reset" onclick="reset()" /> </div> | |
<div id="container"></div> | |
<div id="winner"></div> | |
<script> | |
var timerMS = 0, timer; | |
function isCanvasSupported() {//return false; | |
var elem = document.createElement('canvas'); | |
return !!(elem.getContext && elem.getContext('2d')); | |
} | |
var randomSort2 = function (a, b) { | |
// Get a random number between 0 and 10 | |
var temp = parseInt(Math.random() * 10); | |
// Get 1 or 0, whether temp is odd or even | |
var isOddOrEven = temp % 2; | |
// Get +1 or -1, whether temp greater or smaller than 5 | |
var isPosOrNeg = temp > 5 ? 1 : -1; | |
// Return -1, 0, or +1 | |
return (isOddOrEven * isPosOrNeg); | |
} | |
function fixEvent(e) { | |
if (!e.hasOwnProperty('offsetX')) { | |
var curleft = curtop = 0; | |
if (e.offsetParent) { | |
var obj = e; | |
do { | |
curleft += obj.offsetLeft; | |
curtop += obj.offsetTop; | |
} while (obj = obj.offsetParent); | |
} | |
e.offsetX = e.layerX - curleft; | |
e.offsetY = e.layerY - curtop; | |
} | |
return e; | |
} | |
function tickTimer() { | |
timerMS++; | |
clock.innerHTML = timerMS; | |
} | |
function changeMode(select) { | |
var cols = 4, rows = 4; | |
switch (select.selectedIndex) { | |
case 0: | |
cols = 3; | |
rows = 3; | |
break; | |
case 1: | |
cols = 4; | |
rows = 4; | |
break; | |
case 2: | |
cols = 5; | |
rows = 5; | |
break; | |
case 3: | |
cols = 6; | |
rows = 6; | |
break; | |
case 4: | |
cols = 10; | |
rows = 10; | |
break; | |
} | |
var iiframe = parent.window.document.getElementById("iiframe"); | |
if (iiframe) { | |
parent.window.document.getElementById("iiframe").width = (cols * rows) * 50 + "px"; | |
parent.window.document.getElementById("iiframe").height = 50 + (cols * rows) * 50 + "px"; | |
} | |
init(cols, rows); | |
} | |
function reset() { | |
changeMode(document.getElementById("mode")); | |
} | |
function init(rows,cols) { | |
if (!isCanvasSupported()) { | |
//redirect | |
self.location.href = "boxpuzzle.html"; | |
return; | |
} | |
var canvas = document.getElementById("boxPuzzle"); | |
if (canvas) { | |
canvas.parentNode.removeChild(canvas); | |
if (timer) { | |
timerMS = 0; | |
clearTimeout(timer); | |
clock.innerHTML = 0; | |
timer = null; | |
} | |
} | |
var boxes = [], i, indexes = [], width = 50, height = 50, border = 1, | |
x, y, box, ctx, row, col; | |
canvas = document.createElement('canvas'); | |
canvas.id = "boxPuzzle"; | |
canvas.width = (width * cols) + (cols + 1) * border; | |
canvas.height = (height * rows) + (rows + 1) * border; | |
canvas.style.border = border+ "px solid #d3d3d3"; | |
document.getElementById("container").appendChild(canvas); | |
for (i = 0; i < (rows*cols); i++) { | |
indexes.push(i); | |
} | |
indexes.sort(randomSort2); | |
for (i = 0; i < indexes.length; i++) { | |
row = parseInt(i / rows); | |
col = i - (row * rows); | |
x = (width * col) + (border * (col + 1)); | |
y = (height * row) + (border * (row + 1)); | |
boxes.push({ | |
"x": x, | |
"y": y, | |
"i": i, | |
"number": indexes[i] | |
}); | |
} | |
ctx = canvas.getContext("2d"); | |
for (i = 0, ctx; i < boxes.length; i++) { | |
box = boxes[i]; | |
ctx.fillStyle = box.number == 0 ? "#F0F0F0" : "#C0C0C0"; | |
ctx.fillRect(box.x, box.y, width, height); | |
if (box.number > 0) { | |
ctx.font = "20px Arial"; | |
ctx.fillStyle = "#000000"; | |
ctx.fillText(box.number, box.number<10?(box.x + (width / 2) - 5):(box.x + (width / 2) - 10), box.y + ((height / 2) + 5)); | |
} | |
} | |
canvas.addEventListener("click", function (e) { | |
fixEvent(e); | |
var offsetX = e.offsetX, offsetY = e.offsetY; | |
//which is clicked???? | |
var box, clickedBox, emptyBox, ctx; | |
for (var i = 0; i < boxes.length; i++) { | |
box = boxes[i]; | |
if (!clickedBox && offsetX > box.x && offsetX < (box.x + width) && offsetY > box.y && offsetY < (box.y + height)) { | |
clickedBox = box; | |
} | |
if (box.number === 0) { | |
emptyBox = box; | |
} | |
} | |
if (!clickedBox || !emptyBox) { | |
return; | |
} | |
//check this box can move left/right/up/down | |
if (((clickedBox.i + cols) === emptyBox.i) || ((clickedBox.i + 1) === emptyBox.i) || ((clickedBox.i - cols) === emptyBox.i) || ((clickedBox.i - 1) === emptyBox.i)) { | |
if (!timer) { | |
timer = setInterval(tickTimer, 1000); | |
} | |
//clear both | |
ctx = canvas.getContext("2d"); | |
ctx.clearRect(clickedBox.x, clickedBox.y, width, height); | |
ctx.clearRect(emptyBox.x, emptyBox.y, width, height); | |
//swap - | |
emptyBox.number = clickedBox.number; | |
clickedBox.number = 0; | |
// redraw - remember clickedBox is now emptybox and viceversa | |
ctx.fillStyle = "#F0F0F0"; | |
ctx.fillRect(clickedBox.x, clickedBox.y, width, height); | |
ctx.fillStyle = "#C0C0C0"; | |
ctx.fillRect(emptyBox.x, emptyBox.y, width, height); | |
ctx.font = "20px Arial"; | |
ctx.fillStyle = "#000000"; | |
ctx.fillText(emptyBox.number, emptyBox.x + 20, emptyBox.y + 30); | |
//loop and see if everything in order. | |
var win = true; | |
for (i = 0; i < boxes.length; i++) { | |
if (boxes[i].number > 0) { | |
if (boxes[i].number != (i + 1)) { | |
win = false; | |
break; | |
} | |
} | |
} | |
if (win) { | |
clearTimeout(timer); | |
clock.innerHTML = 0; | |
timer = null; | |
alert("Congratulations\nYou took " + timerMS + " Seconds to finish.\n\nClick 'reset' to play again."); | |
timerMS = 0; | |
} | |
} | |
}, false); | |
} | |
</script> | |
</body> | |
</html> |
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