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JavaScript implementation 2048 Game Example _ basics

Source: Internet
Author: User
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Native JavaScript code written in 2048 games. It is recommended to run under Google Browser.

2048.html

Copy Code code as follows:

<! Doctype>
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<title>2048</title>
<link rel= "stylesheet" type= "Text/css" href= "Css/2048.css"/>
<!--<script type= "Text/javascript" src= "Http://code.jquery.com/jquery-latest.js" ></script>-->
<script type= "Text/javascript" src= "Js/2048.js" ></script>

<body>
<div id= "div2048" >
<a id= "Start" >tap to start:-) </a>
</div>
</body>

2048.css

Copy Code code as follows:

@charset "Utf-8";

#div2048
{
width:500px;
height:500px;
Background-color: #b8af9e;
margin:0 Auto;
position:relative;
}
#start
{
width:500px;
height:500px;
line-height:500px;
Display:block;
Text-align:center;
font-size:30px;
Background: #f2b179;
Color: #FFFFFF;
}
#div2048 Div.tile
{
margin:20px 0px 0px 20px;
width:100px;
height:40px;
padding:30px 0;
font-size:40px;
line-height:40px;
Text-align:center;
Float:left;
}
#div2048 div.tile0{
Background: #ccc0b2;
}
#div2048 Div.tile2
{
Color: #7c736a;
Background: #eee4da;
}
#div2048 div.tile4
{
Color: #7c736a;
Background: #ece0c8;
}
#div2048 Div.tile8
{
Color: #fff7eb;
Background: #f2b179;
}
#div2048 Div.tile16
{
Color: #fff7eb;
Background: #f59563;
}
#div2048 div.tile32
{
Color: #fff7eb;
Background: #f57c5f;
}
#div2048 div.tile64
{
Color: #fff7eb;
Background: #f65d3b;
}
#div2048 div.tile128
{
Color: #fff7eb;
Background: #edce71;
}
#div2048 div.tile256
{
Color: #fff7eb;
Background: #edcc61;
}
#div2048 div.tile512
{
Color: #fff7eb;
Background: #ecc850;
}
#div2048 div.tile1024
{
Color: #fff7eb;
Background: #edc53f;
}
#div2048 div.tile2048
{
Color: #fff7eb;
Background: #eec22e;
}

2048.js

Copy Code code as follows:

function game2048 (Container)
{
This.container = container;
This.tiles = new Array (16);
}

Game2048.prototype = {
Init:function () {
for (var i = 0, len = this.tiles.length i < len; i++) {
var tile = this.newtile (0);
Tile.setattribute (' index ', i);
This.container.appendChild (tile);
This.tiles[i] = tile;
}
This.randomtile ();
This.randomtile ();
},
Newtile:function (val) {
var tile = document.createelement (' div ');
This.settileval (Tile, Val)
return tile;
},
Settileval:function (Tile, val) {
Tile.classname = ' Tile tile ' + val;
Tile.setattribute (' Val ', Val);
tile.innerhtml = val > 0? Val: ';
},
Randomtile:function () {
var zerotiles = [];
for (var i = 0, len = this.tiles.length i < len; i++) {
if (This.tiles[i].getattribute (' val ') = = 0) {
Zerotiles.push (This.tiles[i]);
}
}
var rtile = Zerotiles[math.floor (Math.random () * zerotiles.length)];
This.settileval (Rtile, Math.random () < 0.8? 2:4);
},
Move:function (direction) {
var J;
switch (direction) {
Case ' W ':
for (var i = 4, Len = This.tiles.length i < len; i++) {
j = i;
while (J >= 4) {
This.merge (This.tiles[j-4], this.tiles[j]);
J-= 4;
}
}
Break
Case ' S ':
for (var i = one; I >= 0; i--) {
j = i;
while (J <= 11) {
This.merge (This.tiles[j + 4], this.tiles[j]);
j + + 4;
}
}
Break
Case ' A ':
for (var i = 1, len = This.tiles.length i < len; i++) {
j = i;
while (j% 4!= 0) {
This.merge (This.tiles[j-1], this.tiles[j]);
J-= 1;
}
}
Break
Case ' D ':
for (var i = i >= 0; i--) {
j = i;
while (j% 4!= 3) {
This.merge (This.tiles[j + 1], this.tiles[j]);
j + + 1;
}
}
Break
}
This.randomtile ();
},
Merge:function (Prevtile, Currtile) {
var prevval = Prevtile.getattribute (' Val ');
var currval = Currtile.getattribute (' Val ');
if (currval!= 0) {
if (Prevval = = 0) {
This.settileval (Prevtile, currval);
This.settileval (currtile, 0);
}
else if (Prevval = = Currval) {
This.settileval (Prevtile, Prevval * 2);
This.settileval (currtile, 0);
}
}
},
Equal:function (Tile1, Tile2) {
Return Tile1.getattribute (' val ') = = Tile2.getattribute (' Val ');
},
Max:function () {
for (var i = 0, len = this.tiles.length i < len; i++) {
if (This.tiles[i].getattribute (' val ') = = 2048) {
return true;
}
}
},
Over:function () {
for (var i = 0, len = this.tiles.length i < len; i++) {
if (This.tiles[i].getattribute (' val ') = = 0) {
return false;
}
if (i% 4!= 3) {
if (This.equal (This.tiles[i], this.tiles[i + 1])) {
return false;
}
}
if (I < 12) {
if (This.equal (This.tiles[i], This.tiles[i + 4])) {
return false;
}
}
}
return true;
},
Clean:function () {
for (var i = 0, len = this.tiles.length i < len; i++) {
This.container.removeChild (This.tiles[i]);
}
This.tiles = new Array (16);
}
}

var game, Startbtn;

Window.onload = function () {
 var container = document.getElementById (' div2048 ');
&NBSP;STARTBTN = document.getElementById (' start ');
 startbtn.onclick = function () {
  this.style.display = ' none ';
  game = Game | | New game2048 (container);
  game.init ();
 }
}

Window.onkeydown = function (e) {
var keynum, Keychar;
if (window.event) {//IE
Keynum = E.keycode;
}
else if (E.which) {//Netscape/firefox/opera
Keynum = E.which;
}
Keychar = String.fromCharCode (keynum);
if ([' W ', ' S ', ' A ', ' D '].indexof (Keychar) >-1) {
if (Game.over ()) {
Game.clean ();
StartBtn.style.display = ' block ';
startbtn.innerhtml = ' Game over, replay? '
Return
}
Game.move (Keychar);
}
}

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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