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本文最后更新于2024年1月11日，已超过 180天没有更新
2048是一款有趣的益智小游戏，传说只有一开始就再也停不下来，真的有这么大的吸引力吗？赶紧进入游戏挑战试试吧，看你能否成功将数字组合到2048，很有难度的小游戏。
将以下代码另存为html文件，使用浏览器打开即可运行。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<title>2048小游戏-xarjtc.com</title>
<meta name="viewport" content="width=device-width, target-densitydpi=160dpi, initial-scale=1.0, maximum-scale=1, user-scalable=no, minimal-ui">
<style> html, body {
margin: 0;
padding: 0;
background: #faf8ef;
color: #776e65;
font-family: "Microsoft YaHei", sans-serif, 'Microsoft Sans Serif','Microsoft JhengHei UI';
font-size: 18px;
}
body {
margin: 80px 0;
}
input {
display: inline-block;
background: #8f7a66;
border-radius: 3px;
padding: 0 20px;
text-decoration: none;
color: #f9f6f2;
height: 40px;
line-height: 42px;
cursor: pointer;
font: inherit;
border: none;
outline: none;
box-sizing: border-box;
font-weight: bold;
margin: 0;
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
}
input[type="text"], input[type="email"] {
cursor: auto;
background: #fcfbf9;
font-weight: normal;
color: #776e65;
padding: 0 15px;
}
input[type="text"]::-webkit-input-placeholder, input[type="email"]::-webkit-input-placeholder {
color: #9d948c;
}
input[type="text"]::-moz-placeholder, input[type="email"]::-moz-placeholder {
color: #9d948c;
}
input[type="text"]:-ms-input-placeholder, input[type="email"]:-ms-input-placeholder {
color: #9d948c;
}
.heading:after {
content: "";
display: block;
clear: both;
}
h1.title {
font-size: 80px;
font-weight: bold;
margin: 0;
display: block;
float: left;
}
@-webkit-keyframes move-up {
0% {
top: 25px;
opacity: 1;
}
100% {
top: -50px;
opacity: 0;
}
}
@-moz-keyframes move-up {
0% {
top: 25px;
opacity: 1;
}
100% {
top: -50px;
opacity: 0;
}
}
@keyframes move-up {
0% {
top: 25px;
opacity: 1;
}
100% {
top: -50px;
opacity: 0;
}
}
.scores-container {
float: right;
text-align: right;
}
.score-container, .best-container {
position: relative;
display: inline-block;
background: #bbada0;
padding: 15px 25px;
font-size: 25px;
height: 25px;
line-height: 47px;
font-weight: bold;
border-radius: 3px;
color: white;
margin-top: 8px;
text-align: center;
}
.score-container:after, .best-container:after {
position: absolute;
width: 100%;
top: 10px;
left: 0;
text-transform: uppercase;
font-size: 13px;
line-height: 13px;
text-align: center;
color: #eee4da;
}
.score-container .score-addition, .best-container .score-addition {
position: absolute;
right: 30px;
color: red;
font-size: 25px;
line-height: 25px;
font-weight: bold;
color: rgba(119, 110, 101, 0.9);
z-index: 100;
-webkit-animation: move-up 600ms ease-in;
-moz-animation: move-up 600ms ease-in;
animation: move-up 600ms ease-in;
-webkit-animation-fill-mode: both;
-moz-animation-fill-mode: both;
animation-fill-mode: both;
}
.score-container:after {
content: "Score";
}
.best-container:after {
content: "Best";
}
p {
margin-top: 0;
margin-bottom: 10px;
line-height: 1.65;
}
a {
color: #776e65;
font-weight: bold;
text-decoration: underline;
cursor: pointer;
}
strong.important {
text-transform: uppercase;
}
hr {
border: none;
border-bottom: 1px solid #d8d4d0;
margin-top: 20px;
margin-bottom: 30px;
}
.container {
width: 500px;
margin: 0 auto;
}
@-webkit-keyframes fade-in {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-moz-keyframes fade-in {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@keyframes fade-in {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
@-webkit-keyframes slide-up {
0% {
margin-top: 32%;
}
100% {
margin-top: 20%;
}
}
@-moz-keyframes slide-up {
0% {
margin-top: 32%;
}
100% {
margin-top: 20%;
}
}
@keyframes slide-up {
0% {
margin-top: 32%;
}
100% {
margin-top: 20%;
}
}
.game-container {
margin-top: 40px;
position: relative;
padding: 15px;
cursor: default;
-webkit-touch-callout: none;
-ms-touch-callout: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
-ms-touch-action: none;
touch-action: none;
background: #bbada0;
border-radius: 6px;
width: 500px;
height: 500px;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
.game-message {
display: none;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background: rgba(238, 228, 218, 0.73);
z-index: 100;
padding-top: 40px;
text-align: center;
-webkit-animation: fade-in 800ms ease 1200ms;
-moz-animation: fade-in 800ms ease 1200ms;
animation: fade-in 800ms ease 1200ms;
-webkit-animation-fill-mode: both;
-moz-animation-fill-mode: both;
animation-fill-mode: both;
}
.game-message p {
font-size: 60px;
font-weight: bold;
height: 60px;
line-height: 60px;
margin-top: 222px;
}
.game-message .lower {
display: block;
margin-top: 29px;
}
.game-message .mailing-list {
margin-top: 52px;
}
.game-message .mailing-list strong {
display: block;
margin-bottom: 10px;
}
.game-message .mailing-list .mailing-list-email-field {
width: 230px;
margin-right: 5px;
}
.game-message a {
display: inline-block;
background: #8f7a66;
border-radius: 3px;
padding: 0 20px;
text-decoration: none;
color: #f9f6f2;
height: 40px;
line-height: 42px;
cursor: pointer;
margin-left: 9px;
}
.game-message a.keep-playing-button {
display: none;
}
.game-message .score-sharing {
display: inline-block;
vertical-align: middle;
margin-left: 10px;
}
.game-message.game-won {
background: rgba(237, 194, 46, 0.5);
color: #f9f6f2;
}
.game-message.game-won a.keep-playing-button {
display: inline-block;
}
.game-message.game-won, .game-message.game-over {
display: block;
}
.game-message.game-won p, .game-message.game-over p {
-webkit-animation: slide-up 1.5s ease-in-out 2500ms;
-moz-animation: slide-up 1.5s ease-in-out 2500ms;
animation: slide-up 1.5s ease-in-out 2500ms;
-webkit-animation-fill-mode: both;
-moz-animation-fill-mode: both;
animation-fill-mode: both;
}
.game-message.game-won .mailing-list, .game-message.game-over .mailing-list {
-webkit-animation: fade-in 1.5s ease-in-out 2500ms;
-moz-animation: fade-in 1.5s ease-in-out 2500ms;
animation: fade-in 1.5s ease-in-out 2500ms;
-webkit-animation-fill-mode: both;
-moz-animation-fill-mode: both;
animation-fill-mode: both;
}
.grid-container {
position: absolute;
z-index: 1;
}
.grid-row {
margin-bottom: 15px;
}
.grid-row:last-child {
margin-bottom: 0;
}
.grid-row:after {
content: "";
display: block;
clear: both;
}
.grid-cell {
width: 106.25px;
height: 106.25px;
margin-right: 15px;
float: left;
border-radius: 3px;
background: rgba(238, 228, 218, 0.35);
}
.grid-cell:last-child {
margin-right: 0;
}
.tile-container {
position: absolute;
z-index: 2;
}
.tile, .tile .tile-inner {
width: 107px;
height: 107px;
line-height: 116.25px;
}
.tile.tile-position-1-1 {
-webkit-transform: translate(0px, 0px);
-moz-transform: translate(0px, 0px);
transform: translate(0px, 0px);
}
.tile.tile-position-1-2 {
-webkit-transform: translate(0px, 121px);
-moz-transform: translate(0px, 121px);
transform: translate(0px, 121px);
}
.tile.tile-position-1-3 {
-webkit-transform: translate(0px, 242px);
-moz-transform: translate(0px, 242px);
transform: translate(0px, 242px);
}
.tile.tile-position-1-4 {
-webkit-transform: translate(0px, 363px);
-moz-transform: translate(0px, 363px);
transform: translate(0px, 363px);
}
.tile.tile-position-2-1 {
-webkit-transform: translate(121px, 0px);
-moz-transform: translate(121px, 0px);
transform: translate(121px, 0px);
}
.tile.tile-position-2-2 {
-webkit-transform: translate(121px, 121px);
-moz-transform: translate(121px, 121px);
transform: translate(121px, 121px);
}
.tile.tile-position-2-3 {
-webkit-transform: translate(121px, 242px);
-moz-transform: translate(121px, 242px);
transform: translate(121px, 242px);
}
.tile.tile-position-2-4 {
-webkit-transform: translate(121px, 363px);
-moz-transform: translate(121px, 363px);
transform: translate(121px, 363px);
}
.tile.tile-position-3-1 {
-webkit-transform: translate(242px, 0px);
-moz-transform: translate(242px, 0px);
transform: translate(242px, 0px);
}
.tile.tile-position-3-2 {
-webkit-transform: translate(242px, 121px);
-moz-transform: translate(242px, 121px);
transform: translate(242px, 121px);
}
.tile.tile-position-3-3 {
-webkit-transform: translate(242px, 242px);
-moz-transform: translate(242px, 242px);
transform: translate(242px, 242px);
}
.tile.tile-position-3-4 {
-webkit-transform: translate(242px, 363px);
-moz-transform: translate(242px, 363px);
transform: translate(242px, 363px);
}
.tile.tile-position-4-1 {
-webkit-transform: translate(363px, 0px);
-moz-transform: translate(363px, 0px);
transform: translate(363px, 0px);
}
.tile.tile-position-4-2 {
-webkit-transform: translate(363px, 121px);
-moz-transform: translate(363px, 121px);
transform: translate(363px, 121px);
}
.tile.tile-position-4-3 {
-webkit-transform: translate(363px, 242px);
-moz-transform: translate(363px, 242px);
transform: translate(363px, 242px);
}
.tile.tile-position-4-4 {
-webkit-transform: translate(363px, 363px);
-moz-transform: translate(363px, 363px);
transform: translate(363px, 363px);
}
.tile {
position: absolute;
-webkit-transition: 100ms ease-in-out;
-moz-transition: 100ms ease-in-out;
transition: 100ms ease-in-out;
-webkit-transition-property: -webkit-transform;
-moz-transition-property: -moz-transform;
transition-property: transform;
}
.tile .tile-inner {
border-radius: 3px;
background: #eee4da;
text-align: center;
font-weight: bold;
z-index: 10;
font-size: 40px;
}
.tile.tile-2 .tile-inner {
background: #eee4da;
box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0);
}
.tile.tile-4 .tile-inner {
background: #ede0c8;
box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0), inset 0 0 0 1px rgba(255, 255, 255, 0);
}
.tile.tile-8 .tile-inner {
color: #f9f6f2;
background: #f2b179;
}
.tile.tile-16 .tile-inner {
color: #f9f6f2;
background: #f59563;
}
.tile.tile-32 .tile-inner {
color: #f9f6f2;
background: #f67c5f;
}
.tile.tile-64 .tile-inner {
color: #f9f6f2;
background: #f65e3b;
font-size: 30px;
}
@media screen and (max-width: 520px) {
.tile.tile-64 .tile-inner {
font-size: 17px;
}
}
.tile.tile-128 .tile-inner {
color: #f9f6f2;
background: #edcf72;
box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.2381), inset 0 0 0 1px rgba(255, 255, 255, 0.14286);
font-size: 25px;
}
@media screen and (max-width: 520px) {
.tile.tile-128 .tile-inner {
font-size: 13px;
}
}
.tile.tile-256 .tile-inner {
color: #f9f6f2;
background: #edcc61;
box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.31746), inset 0 0 0 1px rgba(255, 255, 255, 0.19048);
font-size: 30px;
}
@media screen and (max-width: 520px) {
.tile.tile-256 .tile-inner {
font-size: 17px;
}
}
.tile.tile-512 .tile-inner {
color: #f9f6f2;
background: #edc850;
box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.39683), inset 0 0 0 1px rgba(255, 255, 255, 0.2381);
font-size: 30px;
}
@media screen and (max-width: 520px) {
.tile.tile-512 .tile-inner {
font-size: 17px;
}
}
.tile.tile-1024 .tile-inner {
color: #f9f6f2;
background: #edc53f;
box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.47619), inset 0 0 0 1px rgba(255, 255, 255, 0.28571);
font-size: 30px;
}
@media screen and (max-width: 520px) {
.tile.tile-1024 .tile-inner {
font-size: 17px;
}
}
.tile.tile-2048 .tile-inner {
color: #f9f6f2;
background: #edc22e;
box-shadow: 0 0 30px 10px rgba(243, 215, 116, 0.55556), inset 0 0 0 1px rgba(255, 255, 255, 0.33333);
font-size: 30px;
}
@media screen and (max-width: 520px) {
.tile.tile-2048 .tile-inner {
font-size: 17px;
}
}
.tile.tile-super .tile-inner {
color: #f9f6f2;
background: #3c3a32;
font-size: 30px;
}
@media screen and (max-width: 520px) {
.tile.tile-super .tile-inner {
font-size: 17px;
}
}
@-webkit-keyframes appear {
0% {
opacity: 0;
-webkit-transform: scale(0);
-moz-transform: scale(0);
transform: scale(0);
}
100% {
opacity: 1;
-webkit-transform: scale(1);
-moz-transform: scale(1);
transform: scale(1);
}
}
@-moz-keyframes appear {
0% {
opacity: 0;
-webkit-transform: scale(0);
-moz-transform: scale(0);
transform: scale(0);
}
100% {
opacity: 1;
-webkit-transform: scale(1);
-moz-transform: scale(1);
transform: scale(1);
}
}
@keyframes appear {
0% {
opacity: 0;
-webkit-transform: scale(0);
-moz-transform: scale(0);
transform: scale(0);
}
100% {
opacity: 1;
-webkit-transform: scale(1);
-moz-transform: scale(1);
transform: scale(1);
}
}
.tile-new .tile-inner {
-webkit-animation: appear 200ms ease 100ms;
-moz-animation: appear 200ms ease 100ms;
animation: appear 200ms ease 100ms;
-webkit-animation-fill-mode: backwards;
-moz-animation-fill-mode: backwards;
animation-fill-mode: backwards;
}
@-webkit-keyframes pop {
0% {
-webkit-transform: scale(0);
-moz-transform: scale(0);
transform: scale(0);
}
50% {
-webkit-transform: scale(1.2);
-moz-transform: scale(1.2);
transform: scale(1.2);
}
100% {
-webkit-transform: scale(1);
-moz-transform: scale(1);
transform: scale(1);
}
}
@-moz-keyframes pop {
0% {
-webkit-transform: scale(0);
-moz-transform: scale(0);
transform: scale(0);
}
50% {
-webkit-transform: scale(1.2);
-moz-transform: scale(1.2);
transform: scale(1.2);
}
100% {
-webkit-transform: scale(1);
-moz-transform: scale(1);
transform: scale(1);
}
}
@keyframes pop {
0% {
-webkit-transform: scale(0);
-moz-transform: scale(0);
transform: scale(0);
}
50% {
-webkit-transform: scale(1.2);
-moz-transform: scale(1.2);
transform: scale(1.2);
}
100% {
-webkit-transform: scale(1);
-moz-transform: scale(1);
transform: scale(1);
}
}
.tile-merged .tile-inner {
z-index: 20;
-webkit-animation: pop 200ms ease 100ms;
-moz-animation: pop 200ms ease 100ms;
animation: pop 200ms ease 100ms;
-webkit-animation-fill-mode: backwards;
-moz-animation-fill-mode: backwards;
animation-fill-mode: backwards;
}
.above-game:after {
content: "";
display: block;
clear: both;
}
.game-intro {
float: left;
line-height: 42px;
margin-bottom: 0;
}
.restart-button {
display: inline-block;
background: #8f7a66;
border-radius: 3px;
padding: 0 20px;
text-decoration: none;
color: #f9f6f2;
height: 40px;
line-height: 42px;
cursor: pointer;
display: block;
text-align: center;
float: right;
}
.game-explanation {
margin-top: 50px;
}
.sharing {
margin-top: 20px;
text-align: center;
}
.sharing > iframe, .sharing > span, .sharing > form {
display: inline-block;
vertical-align: middle;
}
@media screen and (max-width: 520px) {
html, body {
font-size: 15px;
}
body {
margin: 20px 0;
padding: 0 20px;
}
h1.title {
font-size: 27px;
margin-top: 15px;
}
.container {
width: 280px;
margin: 0 auto;
}
.score-container, .best-container {
margin-top: 0;
padding: 15px 10px;
min-width: 40px;
}
.heading {
margin-bottom: 10px;
}
.game-intro {
width: 55%;
display: block;
box-sizing: border-box;
line-height: 1.65;
}
.restart-button {
width: 42%;
padding: 0;
display: block;
box-sizing: border-box;
margin-top: 2px;
}
.game-container {
margin-top: 17px;
position: relative;
padding: 10px;
cursor: default;
-webkit-touch-callout: none;
-ms-touch-callout: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
-ms-touch-action: none;
touch-action: none;
background: #bbada0;
border-radius: 6px;
width: 280px;
height: 280px;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
.game-message {
display: none;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background: rgba(238, 228, 218, 0.73);
z-index: 100;
padding-top: 40px;
text-align: center;
-webkit-animation: fade-in 800ms ease 1200ms;
-moz-animation: fade-in 800ms ease 1200ms;
animation: fade-in 800ms ease 1200ms;
-webkit-animation-fill-mode: both;
-moz-animation-fill-mode: both;
animation-fill-mode: both;
}
.game-message p {
font-size: 60px;
font-weight: bold;
height: 60px;
line-height: 60px;
margin-top: 222px;
}
.game-message .lower {
display: block;
margin-top: 29px;
}
.game-message .mailing-list {
margin-top: 52px;
}
.game-message .mailing-list strong {
display: block;
margin-bottom: 10px;
}
.game-message .mailing-list .mailing-list-email-field {
width: 230px;
margin-right: 5px;
}
.game-message a {
display: inline-block;
background: #8f7a66;
border-radius: 3px;
padding: 0 20px;
text-decoration: none;
color: #f9f6f2;
height: 40px;
line-height: 42px;
cursor: pointer;
margin-left: 9px;
}
.game-message a.keep-playing-button {
display: none;
}
.game-message .score-sharing {
display: inline-block;
vertical-align: middle;
margin-left: 10px;
}
.game-message.game-won {
background: rgba(237, 194, 46, 0.5);
color: #f9f6f2;
}
.game-message.game-won a.keep-playing-button {
display: inline-block;
}
.game-message.game-won, .game-message.game-over {
display: block;
}
.game-message.game-won p, .game-message.game-over p {
-webkit-animation: slide-up 1.5s ease-in-out 2500ms;
-moz-animation: slide-up 1.5s ease-in-out 2500ms;
animation: slide-up 1.5s ease-in-out 2500ms;
-webkit-animation-fill-mode: both;
-moz-animation-fill-mode: both;
animation-fill-mode: both;
}
.game-message.game-won .mailing-list, .game-message.game-over .mailing-list {
-webkit-animation: fade-in 1.5s ease-in-out 2500ms;
-moz-animation: fade-in 1.5s ease-in-out 2500ms;
animation: fade-in 1.5s ease-in-out 2500ms;
-webkit-animation-fill-mode: both;
-moz-animation-fill-mode: both;
animation-fill-mode: both;
}
.grid-container {
position: absolute;
z-index: 1;
}
.grid-row {
margin-bottom: 10px;
}
.grid-row:last-child {
margin-bottom: 0;
}
.grid-row:after {
content: "";
display: block;
clear: both;
}
.grid-cell {
width: 57.5px;
height: 57.5px;
margin-right: 10px;
float: left;
border-radius: 3px;
background: rgba(238, 228, 218, 0.35);
}
.grid-cell:last-child {
margin-right: 0;
}
.tile-container {
position: absolute;
z-index: 2;
}
.tile, .tile .tile-inner {
width: 58px;
height: 58px;
line-height: 67.5px;
}
.tile.tile-position-1-1 {
-webkit-transform: translate(0px, 0px);
-moz-transform: translate(0px, 0px);
transform: translate(0px, 0px);
}
.tile.tile-position-1-2 {
-webkit-transform: translate(0px, 67px);
-moz-transform: translate(0px, 67px);
transform: translate(0px, 67px);
}
.tile.tile-position-1-3 {
-webkit-transform: translate(0px, 135px);
-moz-transform: translate(0px, 135px);
transform: translate(0px, 135px);
}
.tile.tile-position-1-4 {
-webkit-transform: translate(0px, 202px);
-moz-transform: translate(0px, 202px);
transform: translate(0px, 202px);
}
.tile.tile-position-2-1 {
-webkit-transform: translate(67px, 0px);
-moz-transform: translate(67px, 0px);
transform: translate(67px, 0px);
}
.tile.tile-position-2-2 {
-webkit-transform: translate(67px, 67px);
-moz-transform: translate(67px, 67px);
transform: translate(67px, 67px);
}
.tile.tile-position-2-3 {
-webkit-transform: translate(67px, 135px);
-moz-transform: translate(67px, 135px);
transform: translate(67px, 135px);
}
.tile.tile-position-2-4 {
-webkit-transform: translate(67px, 202px);
-moz-transform: translate(67px, 202px);
transform: translate(67px, 202px);
}
.tile.tile-position-3-1 {
-webkit-transform: translate(135px, 0px);
-moz-transform: translate(135px, 0px);
transform: translate(135px, 0px);
}
.tile.tile-position-3-2 {
-webkit-transform: translate(135px, 67px);
-moz-transform: translate(135px, 67px);
transform: translate(135px, 67px);
}
.tile.tile-position-3-3 {
-webkit-transform: translate(135px, 135px);
-moz-transform: translate(135px, 135px);
transform: translate(135px, 135px);
}
.tile.tile-position-3-4 {
-webkit-transform: translate(135px, 202px);
-moz-transform: translate(135px, 202px);
transform: translate(135px, 202px);
}
.tile.tile-position-4-1 {
-webkit-transform: translate(202px, 0px);
-moz-transform: translate(202px, 0px);
transform: translate(202px, 0px);
}
.tile.tile-position-4-2 {
-webkit-transform: translate(202px, 67px);
-moz-transform: translate(202px, 67px);
transform: translate(202px, 67px);
}
.tile.tile-position-4-3 {
-webkit-transform: translate(202px, 135px);
-moz-transform: translate(202px, 135px);
transform: translate(202px, 135px);
}
.tile.tile-position-4-4 {
-webkit-transform: translate(202px, 202px);
-moz-transform: translate(202px, 202px);
transform: translate(202px, 202px);
}
.tile .tile-inner {
font-size: 25px;
}
.game-message {
padding-top: 0;
}
.game-message p {
font-size: 30px !important;
height: 30px !important;
line-height: 30px !important;
margin-top: 32% !important;
margin-bottom: 0 !important;
}
.game-message .lower {
margin-top: 10px !important;
}
.game-message.game-won .score-sharing {
margin-top: 10px;
}
.game-message.game-over .mailing-list {
margin-top: 25px;
}
.game-message .mailing-list {
margin-top: 10px;
}
.game-message .mailing-list .mailing-list-email-field {
width: 180px;
}
.sharing > iframe, .sharing > span, .sharing > form {
display: block;
margin: 0 auto;
margin-bottom: 20px;
}
}
.pp-donate button {
-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
border: none;
font: inherit;
color: inherit;
display: inline-block;
background: #8f7a66;
border-radius: 3px;
padding: 0 20px;
text-decoration: none;
color: #f9f6f2;
height: 40px;
line-height: 42px;
cursor: pointer;
}
.pp-donate button img {
vertical-align: -4px;
margin-right: 8px;
}
.btc-donate {
position: relative;
margin-left: 10px;
display: inline-block;
background: #8f7a66;
border-radius: 3px;
padding: 0 20px;
text-decoration: none;
color: #f9f6f2;
height: 40px;
line-height: 42px;
cursor: pointer;
}
.btc-donate img {
vertical-align: -4px;
margin-right: 8px;
}
.btc-donate a {
color: #f9f6f2;
text-decoration: none;
font-weight: normal;
}
.btc-donate .address {
cursor: auto;
position: absolute;
width: 340px;
right: 50%;
margin-right: -170px;
padding-bottom: 7px;
top: -30px;
opacity: 0;
pointer-events: none;
-webkit-transition: 400ms ease;
-moz-transition: 400ms ease;
transition: 400ms ease;
-webkit-transition-property: top, opacity;
-moz-transition-property: top, opacity;
transition-property: top, opacity;
}
.btc-donate .address:after {
position: absolute;
border-top: 10px solid #bbada0;
border-right: 7px solid transparent;
border-left: 7px solid transparent;
content: "";
bottom: 0px;
left: 50%;
margin-left: -7px;
}
.btc-donate .address code {
background-color: #bbada0;
padding: 10px 15px;
width: 100%;
border-radius: 3px;
line-height: 1;
font-weight: normal;
font-size: 15px;
font-family: Consolas, "Liberation Mono", Courier, monospace;
text-align: center;
}
.btc-donate:hover .address, .btc-donate .address:hover .address {
opacity: 1;
top: -45px;
pointer-events: auto;
}
@media screen and (max-width: 480px) {
.btc-donate {
width: 120px;
}
.btc-donate .address {
margin-right: -150px;
width: 300px;
}
.btc-donate .address code {
font-size: 13px;
}
.btc-donate .address:after {
left: 50%;
bottom: 2px;
}
}
</style>
</head>
<body>
<div class="container">
<div class="heading">
<h1 class="title">2048小游戏</h1>
<div class="scores-container">
<div class="score-container">
<div class="score-addition"></div>
</div>
<div class="best-container"></div>
</div>
</div>
<div class="above-game">
<a class="restart-button">新游戏</a>
</div>
<div class="game-container">
<div class="game-message">
<p>
</p>
<div class="lower">
<a class="keep-playing-button">继续前进</a>
<a class="retry-button">再试一次</a>
<div class="score-sharing"></div>
</div>
</div>
<div class="grid-container">
<div class="grid-row">
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
</div>
<div class="grid-row">
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
</div>
<div class="grid-row">
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
</div>
<div class="grid-row">
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
<div class="grid-cell">
</div>
</div>
</div>
<div class="tile-container"></div>
</div>
<script>
Function.prototype.bind = Function.prototype.bind || function (target) {
var self = this;
return function (args) {
if (!(args instanceof Array)) {
args = [args];
}
self.apply(target, args);
};
};
(function () {
if (typeof window.Element === "undefined" ||
"classList" in document.documentElement) {
return;
}
var prototype = Array.prototype,
push = prototype.push,
splice = prototype.splice,
join = prototype.join;
function DOMTokenList(el) {
this.el = el;
// The className needs to be trimmed and split on whitespace
// to retrieve a list of classes.
var classes = el.className.replace(/^\s+|\s+$/g, '').split(/\s+/);
for (var i = 0; i < classes.length; i++) {
push.call(this, classes[i]);
}
}
DOMTokenList.prototype = {
add: function (token) {
if (this.contains(token)) return;
push.call(this, token);
this.el.className = this.toString();
},
contains: function (token) {
return this.el.className.indexOf(token) != -1;
},
item: function (index) {
return this[index] || null;
},
remove: function (token) {
if (!this.contains(token)) return;
for (var i = 0; i < this.length; i++) {
if (this[i] == token) break;
}
splice.call(this, i, 1);
this.el.className = this.toString();
},
toString: function () {
return join.call(this, ' ');
},
toggle: function (token) {
if (!this.contains(token)) {
this.add(token);
} else {
this.remove(token);
}
return this.contains(token);
}
};
window.DOMTokenList = DOMTokenList;
function defineElementGetter(obj, prop, getter) {
if (Object.defineProperty) {
Object.defineProperty(obj, prop, {
get: getter
});
} else {
obj.__defineGetter__(prop, getter);
}
}
defineElementGetter(HTMLElement.prototype, 'classList', function () {
return new DOMTokenList(this);
});
})();
(function() {
var lastTime = 0;
var vendors = ['webkit', 'moz'];
for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
window.cancelAnimationFrame =
window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame'];
}
if (!window.requestAnimationFrame) {
window.requestAnimationFrame = function(callback, element) {
var currTime = new Date().getTime();
var timeToCall = Math.max(0, 16 - (currTime - lastTime));
var id = window.setTimeout(function() { callback(currTime + timeToCall); },
timeToCall);
lastTime = currTime + timeToCall;
return id;
};
}
if (!window.cancelAnimationFrame) {
window.cancelAnimationFrame = function(id) {
clearTimeout(id);
};
}
}());
function KeyboardInputManager() {
this.events = {};
if (window.navigator.msPointerEnabled) {
//Internet Explorer 10 style
this.eventTouchstart = "MSPointerDown";
this.eventTouchmove = "MSPointerMove";
this.eventTouchend = "MSPointerUp";
} else {
this.eventTouchstart = "touchstart";
this.eventTouchmove = "touchmove";
this.eventTouchend = "touchend";
}
this.listen();
}
KeyboardInputManager.prototype.on = function (event, callback) {
if (!this.events[event]) {
this.events[event] = [];
}
this.events[event].push(callback);
};
KeyboardInputManager.prototype.emit = function (event, data) {
var callbacks = this.events[event];
if (callbacks) {
callbacks.forEach(function (callback) {
callback(data);
});
}
};
KeyboardInputManager.prototype.listen = function () {
var self = this;
var map = {
38: 0, // Up
39: 1, // Right
40: 2, // Down
37: 3, // Left
75: 0, // Vim up
76: 1, // Vim right
74: 2, // Vim down
72: 3, // Vim left
87: 0, // W
68: 1, // D
83: 2, // S
65: 3 // A
};
// Respond to direction keys
document.addEventListener("keydown", function (event) {
var modifiers = event.altKey || event.ctrlKey || event.metaKey ||
event.shiftKey;
var mapped = map[event.which];
// Ignore the event if it's happening in a text field
if (self.targetIsInput(event)) return;
if (!modifiers) {
if (mapped !== undefined) {
event.preventDefault();
self.emit("move", mapped);
}
}
// R key restarts the game
if (!modifiers && event.which === 82) {
self.restart.call(self, event);
}
});
// Respond to button presses
this.bindButtonPress(".retry-button", this.restart);
this.bindButtonPress(".restart-button", this.restart);
this.bindButtonPress(".keep-playing-button", this.keepPlaying);
// Respond to swipe events
var touchStartClientX, touchStartClientY;
var gameContainer = document.getElementsByClassName("game-container")[0];
gameContainer.addEventListener(this.eventTouchstart, function (event) {
if ((!window.navigator.msPointerEnabled && event.touches.length > 1) ||
event.targetTouches > 1 ||
self.targetIsInput(event)) {
return; // Ignore if touching with more than 1 finger or touching input
}
if (window.navigator.msPointerEnabled) {
touchStartClientX = event.pageX;
touchStartClientY = event.pageY;
} else {
touchStartClientX = event.touches[0].clientX;
touchStartClientY = event.touches[0].clientY;
}
event.preventDefault();
});
gameContainer.addEventListener(this.eventTouchmove, function (event) {
event.preventDefault();
});
gameContainer.addEventListener(this.eventTouchend, function (event) {
if ((!window.navigator.msPointerEnabled && event.touches.length > 0) ||
event.targetTouches > 0 ||
self.targetIsInput(event)) {
return; // Ignore if still touching with one or more fingers or input
}
var touchEndClientX, touchEndClientY;
if (window.navigator.msPointerEnabled) {
touchEndClientX = event.pageX;
touchEndClientY = event.pageY;
} else {
touchEndClientX = event.changedTouches[0].clientX;
touchEndClientY = event.changedTouches[0].clientY;
}
var dx = touchEndClientX - touchStartClientX;
var absDx = Math.abs(dx);
var dy = touchEndClientY - touchStartClientY;
var absDy = Math.abs(dy);
if (Math.max(absDx, absDy) > 10) {
// (right : left) : (down : up)
self.emit("move", absDx > absDy ? (dx > 0 ? 1 : 3) : (dy > 0 ? 2 : 0));
}
});
};
KeyboardInputManager.prototype.restart = function (event) {
event.preventDefault();
this.emit("restart");
};
KeyboardInputManager.prototype.keepPlaying = function (event) {
event.preventDefault();
this.emit("keepPlaying");
};
KeyboardInputManager.prototype.bindButtonPress = function (selector, fn) {
var button = document.querySelector(selector);
button.addEventListener("click", fn.bind(this));
button.addEventListener(this.eventTouchend, fn.bind(this));
};
KeyboardInputManager.prototype.targetIsInput = function (event) {
return event.target.tagName.toLowerCase() === "input";
};
function HTMLActuator() {
this.tileContainer = document.querySelector(".tile-container");
this.scoreContainer = document.querySelector(".score-container");
this.bestContainer = document.querySelector(".best-container");
this.messageContainer = document.querySelector(".game-message");
this.sharingContainer = document.querySelector(".score-sharing");
this.score = 0;
}
HTMLActuator.prototype.actuate = function (grid, metadata) {
var self = this;
window.requestAnimationFrame(function () {
self.clearContainer(self.tileContainer);
grid.cells.forEach(function (column) {
column.forEach(function (cell) {
if (cell) {
self.addTile(cell);
}
});
});
self.updateScore(metadata.score);
self.updateBestScore(metadata.bestScore);
if (metadata.terminated) {
if (metadata.over) {
self.message(false); // You lose
} else if (metadata.won) {
self.message(true); // You win!
}
}
});
};
// Continues the game (both restart and keep playing)
HTMLActuator.prototype.continueGame = function () {
if (typeof ga !== "undefined") {
ga("send", "event", "game", "restart");
}
this.clearMessage();
};
HTMLActuator.prototype.clearContainer = function (container) {
while (container.firstChild) {
container.removeChild(container.firstChild);
}
};
//HTMLActuator.prototype.tileHTML = ["菜鸟", "入门", "码畜", "码奴", "码农", "IT民工", "IT工程师", "IT人才", "IT精英", "IT大哥", "IT领袖"];
//HTMLActuator.prototype.tileHTML = ["2", "4", "8", "16", "32", "64", "128", "256", "512", "1024", "2048"];
//HTMLActuator.prototype.tileHTML = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "win"];
HTMLActuator.prototype.tileHTML = ["2", "4", "8", "16", "32", "64", "128", "256", "512", "1024", "2048"];
HTMLActuator.prototype.addTile = function (tile) {
var self = this;
var wrapper = document.createElement("div");
var inner = document.createElement("div");
var position = tile.previousPosition || { x: tile.x, y: tile.y };
var positionClass = this.positionClass(position);
// We can't use classlist because it somehow glitches when replacing classes
var classes = ["tile", "tile-" + tile.value, positionClass];
if (tile.value > 2048) classes.push("tile-super");
this.applyClasses(wrapper, classes);
inner.classList.add("tile-inner");
inner.textContent = HTMLActuator.prototype.tileHTML[Math.log(tile.value) / Math.LN2 - 1] || tile.value;
if (tile.previousPosition) {
// Make sure that the tile gets rendered in the previous position first
window.requestAnimationFrame(function () {
classes[2] = self.positionClass({ x: tile.x, y: tile.y });
self.applyClasses(wrapper, classes); // Update the position
});
} else if (tile.mergedFrom) {
classes.push("tile-merged");
this.applyClasses(wrapper, classes);
// Render the tiles that merged
tile.mergedFrom.forEach(function (merged) {
self.addTile(merged);
});
} else {
classes.push("tile-new");
this.applyClasses(wrapper, classes);
}
// Add the inner part of the tile to the wrapper
wrapper.appendChild(inner);
// Put the tile on the board
this.tileContainer.appendChild(wrapper);
};
HTMLActuator.prototype.applyClasses = function (element, classes) {
element.setAttribute("class", classes.join(" "));
};
HTMLActuator.prototype.normalizePosition = function (position) {
return { x: position.x + 1, y: position.y + 1 };
};
HTMLActuator.prototype.positionClass = function (position) {
position = this.normalizePosition(position);
return "tile-position-" + position.x + "-" + position.y;
};
HTMLActuator.prototype.updateScore = function (score) {
this.clearContainer(this.scoreContainer);
var difference = score - this.score;
this.score = score;
this.scoreContainer.textContent = this.score;
if (difference > 0) {
var addition = document.createElement("div");
addition.classList.add("score-addition");
addition.textContent = "+" + difference;
this.scoreContainer.appendChild(addition);
}
};
HTMLActuator.prototype.updateBestScore = function (bestScore) {
this.bestContainer.textContent = bestScore;
};
HTMLActuator.prototype.message = function (won) {
var type = won ? "game-won" : "game-over";
var message = won ? "You win!" : "Game over!";
if (typeof ga !== "undefined") {
ga("send", "event", "game", "end", type, this.score);
}
this.messageContainer.classList.add(type);
this.messageContainer.getElementsByTagName("p")[0].textContent = message;
this.clearContainer(this.sharingContainer);
this.sharingContainer.appendChild(this.scoreTweetButton());
//twttr.widgets.load();
};
HTMLActuator.prototype.clearMessage = function () {
// IE only takes one value to remove at a time.
this.messageContainer.classList.remove("game-won");
this.messageContainer.classList.remove("game-over");
};
HTMLActuator.prototype.scoreTweetButton = function () {
var tweet = document.createElement("a");
tweet.classList.add("twitter-share-button");
tweet.setAttribute("href", "https://twitter.com/share");
tweet.setAttribute("data-via", "gabrielecirulli");
tweet.setAttribute("data-url", "http://git.io/2048");
tweet.setAttribute("data-counturl", "http://gabrielecirulli.github.io/2048/");
tweet.textContent = "Tweet";
var text = "I scored " + this.score + " points at 2048, a game where you " +
"join numbers to score high! #2048game";
tweet.setAttribute("data-text", text);
return tweet;
};
function Grid(size, previousState) {
this.size = size;
this.cells = previousState ? this.fromState(previousState) : this.empty();
}
// Build a grid of the specified size
Grid.prototype.empty = function () {
var cells = [];
for (var x = 0; x < this.size; x++) {
var row = cells[x] = [];
for (var y = 0; y < this.size; y++) {
row.push(null);
}
}
return cells;
};
Grid.prototype.fromState = function (state) {
var cells = [];
for (var x = 0; x < this.size; x++) {
var row = cells[x] = [];
for (var y = 0; y < this.size; y++) {
var tile = state[x][y];
row.push(tile ? new Tile(tile.position, tile.value) : null);
}
}
return cells;
};
// Find the first available random position
Grid.prototype.randomAvailableCell = function () {
var cells = this.availableCells();
if (cells.length) {
return cells[Math.floor(Math.random() * cells.length)];
}
};
Grid.prototype.availableCells = function () {
var cells = [];
this.eachCell(function (x, y, tile) {
if (!tile) {
cells.push({ x: x, y: y });
}
});
return cells;
};
// Call callback for every cell
Grid.prototype.eachCell = function (callback) {
for (var x = 0; x < this.size; x++) {
for (var y = 0; y < this.size; y++) {
callback(x, y, this.cells[x][y]);
}
}
};
// Check if there are any cells available
Grid.prototype.cellsAvailable = function () {
return !!this.availableCells().length;
};
// Check if the specified cell is taken
Grid.prototype.cellAvailable = function (cell) {
return !this.cellOccupied(cell);
};
Grid.prototype.cellOccupied = function (cell) {
return !!this.cellContent(cell);
};
Grid.prototype.cellContent = function (cell) {
if (this.withinBounds(cell)) {
return this.cells[cell.x][cell.y];
} else {
return null;
}
};
// Inserts a tile at its position
Grid.prototype.insertTile = function (tile) {
this.cells[tile.x][tile.y] = tile;
};
Grid.prototype.removeTile = function (tile) {
this.cells[tile.x][tile.y] = null;
};
Grid.prototype.withinBounds = function (position) {
return position.x >= 0 && position.x < this.size &&
position.y >= 0 && position.y < this.size;
};
Grid.prototype.serialize = function () {
var cellState = [];
for (var x = 0; x < this.size; x++) {
var row = cellState[x] = [];
for (var y = 0; y < this.size; y++) {
row.push(this.cells[x][y] ? this.cells[x][y].serialize() : null);
}
}
return {
size: this.size,
cells: cellState
};
};
function Tile(position, value) {
this.x = position.x;
this.y = position.y;
this.value = value || 2;
this.previousPosition = null;
this.mergedFrom = null; // Tracks tiles that merged together
}
Tile.prototype.savePosition = function () {
this.previousPosition = { x: this.x, y: this.y };
};
Tile.prototype.updatePosition = function (position) {
this.x = position.x;
this.y = position.y;
};
Tile.prototype.serialize = function () {
return {
position: {
x: this.x,
y: this.y
},
value: this.value
};
};
window.fakeStorage = {
_data: {},
setItem: function (id, val) {
return this._data[id] = String(val);
},
getItem: function (id) {
return this._data.hasOwnProperty(id) ? this._data[id] : undefined;
},
removeItem: function (id) {
return delete this._data[id];
},
clear: function () {
return this._data = {};
}
};
function LocalStorageManager() {
this.bestScoreKey = "bestScore";
this.gameStateKey = "gameState";
var supported = this.localStorageSupported();
this.storage = supported ? window.localStorage : window.fakeStorage;
}
LocalStorageManager.prototype.localStorageSupported = function () {
var testKey = "test";
var storage = window.localStorage;
try {
storage.setItem(testKey, "1");
storage.removeItem(testKey);
return true;
} catch (error) {
return false;
}
};
// Best score getters/setters
LocalStorageManager.prototype.getBestScore = function () {
return this.storage.getItem(this.bestScoreKey) || 0;
};
LocalStorageManager.prototype.setBestScore = function (score) {
this.storage.setItem(this.bestScoreKey, score);
};
// Game state getters/setters and clearing
LocalStorageManager.prototype.getGameState = function () {
var stateJSON = this.storage.getItem(this.gameStateKey);
return stateJSON ? JSON.parse(stateJSON) : null;
};
LocalStorageManager.prototype.setGameState = function (gameState) {
this.storage.setItem(this.gameStateKey, JSON.stringify(gameState));
};
LocalStorageManager.prototype.clearGameState = function () {
this.storage.removeItem(this.gameStateKey);
};
function GameManager(size, InputManager, Actuator, StorageManager) {
this.size = size; // Size of the grid
this.inputManager = new InputManager;
this.storageManager = new StorageManager;
this.actuator = new Actuator;
this.startTiles = 2;
this.inputManager.on("move", this.move.bind(this));
this.inputManager.on("restart", this.restart.bind(this));
this.inputManager.on("keepPlaying", this.keepPlaying.bind(this));
this.setup();
}
// Restart the game
GameManager.prototype.restart = function () {
this.storageManager.clearGameState();
this.actuator.continueGame(); // Clear the game won/lost message
this.setup();
};
// Keep playing after winning (allows going over 2048)
GameManager.prototype.keepPlaying = function () {
this.keepPlaying = true;
this.actuator.continueGame(); // Clear the game won/lost message
};
// Return true if the game is lost, or has won and the user hasn't kept playing
GameManager.prototype.isGameTerminated = function () {
if (this.over || (this.won && !this.keepPlaying)) {
return true;
} else {
return false;
}
};
// Set up the game
GameManager.prototype.setup = function () {
var previousState = this.storageManager.getGameState();
// Reload the game from a previous game if present
if (previousState) {
this.grid = new Grid(previousState.grid.size,
previousState.grid.cells); // Reload grid
this.score = previousState.score;
this.over = previousState.over;
this.won = previousState.won;
this.keepPlaying = previousState.keepPlaying;
} else {
this.grid = new Grid(this.size);
this.score = 0;
this.over = false;
this.won = false;
this.keepPlaying = false;
// Add the initial tiles
this.addStartTiles();
}
// Update the actuator
this.actuate();
};
// Set up the initial tiles to start the game with
GameManager.prototype.addStartTiles = function () {
for (var i = 0; i < this.startTiles; i++) {
this.addRandomTile();
}
};
// Adds a tile in a random position
GameManager.prototype.addRandomTile = function () {
if (this.grid.cellsAvailable()) {
var value = Math.random() < 0.9 ? 2 : 4;
var tile = new Tile(this.grid.randomAvailableCell(), value);
this.grid.insertTile(tile);
}
};
// Sends the updated grid to the actuator
GameManager.prototype.actuate = function () {
if (this.storageManager.getBestScore() < this.score) {
this.storageManager.setBestScore(this.score);
}
// Clear the state when the game is over (game over only, not win)
if (this.over) {
this.storageManager.clearGameState();
} else {
this.storageManager.setGameState(this.serialize());
}
this.actuator.actuate(this.grid, {
score: this.score,
over: this.over,
won: this.won,
bestScore: this.storageManager.getBestScore(),
terminated: this.isGameTerminated()
});
};
// Represent the current game as an object
GameManager.prototype.serialize = function () {
return {
grid: this.grid.serialize(),
score: this.score,
over: this.over,
won: this.won,
keepPlaying: this.keepPlaying
};
};
// Save all tile positions and remove merger info
GameManager.prototype.prepareTiles = function () {
this.grid.eachCell(function (x, y, tile) {
if (tile) {
tile.mergedFrom = null;
tile.savePosition();
}
});
};
// Move a tile and its representation
GameManager.prototype.moveTile = function (tile, cell) {
this.grid.cells[tile.x][tile.y] = null;
this.grid.cells[cell.x][cell.y] = tile;
tile.updatePosition(cell);
};
// Move tiles on the grid in the specified direction
GameManager.prototype.move = function (direction) {
// 0: up, 1: right, 2: down, 3: left
var self = this;
if (this.isGameTerminated()) return; // Don't do anything if the game's over
var cell, tile;
var vector = this.getVector(direction);
var traversals = this.buildTraversals(vector);
var moved = false;
// Save the current tile positions and remove merger information
this.prepareTiles();
// Traverse the grid in the right direction and move tiles
traversals.x.forEach(function (x) {
traversals.y.forEach(function (y) {
cell = { x: x, y: y };
tile = self.grid.cellContent(cell);
if (tile) {
var positions = self.findFarthestPosition(cell, vector);
var next = self.grid.cellContent(positions.next);
// Only one merger per row traversal?
if (next && next.value === tile.value && !next.mergedFrom) {
var merged = new Tile(positions.next, tile.value * 2);
merged.mergedFrom = [tile, next];
self.grid.insertTile(merged);
self.grid.removeTile(tile);
// Converge the two tiles' positions
tile.updatePosition(positions.next);
// Update the score
self.score += merged.value;
// The mighty 2048 tile
if (merged.value === 2048) self.won = true;
} else {
self.moveTile(tile, positions.farthest);
}
if (!self.positionsEqual(cell, tile)) {
moved = true; // The tile moved from its original cell!
}
}
});
});
if (moved) {
this.addRandomTile();
if (!this.movesAvailable()) {
this.over = true; // Game over!
}
this.actuate();
}
};
// Get the vector representing the chosen direction
GameManager.prototype.getVector = function (direction) {
// Vectors representing tile movement
var map = {
0: { x: 0, y: -1 }, // Up
1: { x: 1, y: 0 }, // Right
2: { x: 0, y: 1 }, // Down
3: { x: -1, y: 0 } // Left
};
return map[direction];
};
// Build a list of positions to traverse in the right order
GameManager.prototype.buildTraversals = function (vector) {
var traversals = { x: [], y: [] };
for (var pos = 0; pos < this.size; pos++) {
traversals.x.push(pos);
traversals.y.push(pos);
}
// Always traverse from the farthest cell in the chosen direction
if (vector.x === 1) traversals.x = traversals.x.reverse();
if (vector.y === 1) traversals.y = traversals.y.reverse();
return traversals;
};
GameManager.prototype.findFarthestPosition = function (cell, vector) {
var previous;
// Progress towards the vector direction until an obstacle is found
do {
previous = cell;
cell = { x: previous.x + vector.x, y: previous.y + vector.y };
} while (this.grid.withinBounds(cell) &&
this.grid.cellAvailable(cell));
return {
farthest: previous,
next: cell // Used to check if a merge is required
};
};
GameManager.prototype.movesAvailable = function () {
return this.grid.cellsAvailable() || this.tileMatchesAvailable();
};
// Check for available matches between tiles (more expensive check)
GameManager.prototype.tileMatchesAvailable = function () {
var self = this;
var tile;
for (var x = 0; x < this.size; x++) {
for (var y = 0; y < this.size; y++) {
tile = this.grid.cellContent({ x: x, y: y });
if (tile) {
for (var direction = 0; direction < 4; direction++) {
var vector = self.getVector(direction);
var cell = { x: x + vector.x, y: y + vector.y };
var other = self.grid.cellContent(cell);
if (other && other.value === tile.value) {
return true; // These two tiles can be merged
}
}
}
}
}
return false;
};
GameManager.prototype.positionsEqual = function (first, second) {
return first.x === second.x && first.y === second.y;
};
// Wait till the browser is ready to render the game (avoids glitches)
window.requestAnimationFrame(function () {
new GameManager(4, KeyboardInputManager, HTMLActuator, LocalStorageManager);
});
</script>
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