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March 14, 2012 18:31
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Game of 15
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<title>The Game of 15!</title> | |
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
<style type="text/css"> | |
div { | |
text-align:center; | |
} | |
table { | |
border:1px solid #000; | |
background-color:#CCCCCC; | |
margin:0 auto; | |
} | |
td { | |
width:50px; | |
height: 50px; | |
border:1px solid #000; | |
background-color: #FFFF66; | |
text-align:center; | |
} | |
</style> | |
</head> | |
<body> | |
<div> | |
<h1>The Game of 15!</h1> | |
<table cellspacing=10> | |
<tr> | |
<td id="00"> </td> | |
<td id="01"> </td> | |
<td id="02"> </td> | |
<td id="03"> </td> | |
</tr> | |
<tr> | |
<td id="10"> </td> | |
<td id="11"> </td> | |
<td id="12"> </td> | |
<td id="13"> </td> | |
</tr> | |
<tr> | |
<td id="20"> </td> | |
<td id="21"> </td> | |
<td id="22"> </td> | |
<td id="23"> </td> | |
</tr> | |
<tr> | |
<td id="30"> </td> | |
<td id="31"> </td> | |
<td id="32"> </td> | |
<td id="33"> </td> | |
</tr> | |
</table> | |
</div> | |
<script> | |
var WTF = WTF || {}; | |
(function(window) { | |
// Constructor | |
WTF.Game = function() { | |
this.emptyId = "00"; | |
this.emptyRow = 0; | |
this.emptyCol = 0; | |
this.chosen = []; | |
this.init(); | |
} | |
WTF.Game.prototype = { | |
// initialize the game; register click event | |
init: function() { | |
for(var i=0;i<4;i++) { | |
for(var j=0;j<4;j++) { | |
var me = this; | |
document.getElementById([i,j].join('')).onclick = function() { | |
me.move.call(me, this); | |
}; | |
} | |
} | |
this.setup(); | |
}, | |
// get a random number to add to the board | |
getRand: function() { | |
var found = false, r; | |
while(!found) { | |
r = Math.floor(Math.random()*16); | |
found = true; | |
for(i in this.chosen) { | |
if(r == this.chosen[i]) { | |
found = false; | |
break; | |
} | |
} | |
} | |
this.chosen.push(r); | |
return r; | |
}, | |
// determine if a swap can be made | |
move: function(el) { | |
var cellId = el.id; | |
var cellRow = cellId.substring(0,1); | |
var cellCol = cellId.substring(1,2); | |
// this is an ugly conditional but it works | |
if((cellRow == this.emptyRow | |
&& (cellCol-this.emptyCol == 1 | |
|| this.emptyCol - cellCol ==1)) | |
|| (cellCol == this.emptyCol | |
&& (cellRow-this.emptyRow == 1 | |
|| this.emptyRow - cellRow ==1))) | |
{ | |
this.swap(cellId); | |
} | |
return this; | |
}, | |
// clear the chosen data | |
reset: function() { | |
this.chosen = []; | |
}, | |
// set up the board with a random arrangement | |
setup: function() { | |
for(var i=0;i<4;i++) { | |
for(var j=0;j<4;j++) { | |
cellId = [i,j].join(''); | |
cellValue = this.getRand(); | |
if(cellValue == 0){ | |
cellValue=""; | |
this.emptyRow=i; | |
this.emptyCol=j; | |
this.emptyId=cellId; | |
} | |
document.getElementById(cellId).innerHTML = cellValue; | |
} | |
} | |
return this; | |
}, | |
// swap the clicked cell with its empty neighbor | |
swap: function(myId) { | |
document.getElementById(this.emptyId).innerHTML = document.getElementById(myId).innerHTML; | |
document.getElementById(myId).innerHTML = ""; | |
this.emptyRow = myId.substring(0,1); | |
this.emptyCol = myId.substring(1,2); | |
this.emptyId = [this.emptyRow, this.emptyCol].join(''); | |
if(this.solved()) { | |
alert("WAY TO GO! YOU SOLVED IT!\n Click OK to reset the board."); | |
this.reset(); | |
this.setup(); | |
} | |
}, | |
// is the puzzle solved? 1...15 | |
solved: function() { | |
var counter = 0; | |
for(var i=0;i<4;i++) { | |
for(var j=0;j<4;j++) { | |
counter++; | |
if(counter == 16) { | |
counter = ""; | |
} | |
cellId = [i,j].join(''); | |
if(document.getElementById(cellId).innerHTML != counter) { | |
return false; | |
} | |
} | |
} | |
return true; | |
} | |
}; | |
// start the game on window load | |
window.onload = function() { | |
game = new WTF.Game(); | |
}; | |
})(window); | |
</script> | |
</body> | |
</html> |
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