<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JS2048小游戏代码（激流丶）</title>
<style>
*{margin: 0;padding: 0;}
body{
font-size: 30px;
background-color:rgba(23,44,60);
overflow:hidden;
}
.readme{
position:absolute;
left: 5%;
top:100px;
width: 250px;
}
.readme span{
font-size: 16px;
text-align:center;
color: red;
font-weight: 800;
}
.readme p{
display: block;
font-size: 16px;
text-indent: 20px;
color: #75ffe7;
}
.tab{
margin: 100px auto 0;
border-radius: 15px;
text-align: center;
font-weight: bold;
background-color:#999;
}
td{
width: 100px;
height:100px;
border-radius:15px;
}
.text{
position: absolute;
right:20%;
top: 100px;
color: red;
}
.restart{
font-size: 22px;
margin: 25px;
color: red;
text-align: center;
cursor: pointer;
}
.score{
color: #75ffe7;
font-size: 36px;
}
</style>
</head>
<body>
<div class="readme">
<span>玩法说明:</span>
<p>键盘上下左右控制移动，相同格子会累积加起来重叠为新的格子，
当所有格子均占有并不能移动游戏结束。回车键或点击重新开始游戏将会重置。<br>梁先生</p>
</div>
<table class="tab" cellpadding="6"></table>
<div class="restart">重新开始</div>
<div class="text" style="font-size:16px;">分数：<span class="score"> </span> 分</div>
<script type="text/javascript">
// 模块化开发思路
var json={
// 创建初始化函数
init:function(){
var otab= document.querySelector('.tab'),
str='',
id=1;//返回文档指定的css元素，并保存
for(var i=0;i<4;i++){
str+='<tr>';
for(var j=0;j<4;j++){
str +='<td id="' + id++ +'"></td>';
}
str +='</tr>';
}
otab.innerHTML=str;
this.randomNum();
this.randomNum();
this.result();
},
//创建一个任意区间的随机函数
myRandom:function(min , max){
return Math.round(Math.random() * (max-min) + min);
},
//随机在格子上生成一个数字
randomNum : function(){
var num = this.myRandom(1,16);
ogrid=document.getElementById(num);
if(ogrid.innerHTML ==''){
ogrid.innerHTML= this.myRandom(1,2)*2;
}else{
this.randomNum();
}
},
//上键
top:function(){
for(var i=1;i<=4;i++){
for(var j=i;j<=i+12;j+=4){
for(k=j;k>4;k-=4){
this.change(document.getElementById(k -4),
document.getElementById(k));
}
}
}
},
//下键
bottom:function(){
for(var i=1;i<=4;i++){
for(var j = i+12;j>=i;j -=4){
for(var k = j;k < 13;k +=4){
this.change(document.getElementById(k +4),
document.getElementById(k));
}
}
}
},
//左键
left:function(){
for(var i=1;i<=13;i+=4){
for(var j=i; j<= i+3; j++){
for(var k=j; k>i;k--){
this.change(document.getElementById(k -1),
document.getElementById(k));
}
}
}
},
//右键
right:function(){
for(var i=1;i<=13;i +=4){
for(var j = i+4; j>=i;j--){
for(var k=j;k<i+3;k++){
this.change(document.getElementById(k +1),
document.getElementById(k));
}
}
}
},
//移动合并检测函数
change :function(before,after){
//移动
if(before.innerHTML == '' && after.innerHTML != ''){
before.innerHTML= after.innerHTML;
after.innerHTML='';
}
//合并
if(before.innerHTML != '' && before.innerHTML ==
after.innerHTML){
before.innerHTML *=2;
after.innerHTML='';
}
},
//改变颜色计算结果函数
result:function(){
var color={'':'#fff','2':'#0f0','4':'#00ccff','8':'#ff9900',
'16':'#00cc66','32':'#ffcccc','64':'#ff33ff','128':'#0066cc',
'256':'#6633cc','512':'#ff0099','1024':'#990033','2048':'#6600ff',
'4096':'#cc0066'},
score=0;
for(var i = 1 ; i <= 16 ;i++){
var ogrid=document.getElementById(i);
ogrid.style.backgroundColor=color[ogrid.innerHTML];
score += ogrid.innerHTML * 10;
}
document.querySelector('.score').innerHTML=score;
}
}
window.onload=json.init();//加载完成后调用init
document.onkeydown=function(e){
if(/38/.test(e.keyCode) ) json.top();
if(/40/.test(e.keyCode) ) json.bottom();
if(/37/.test(e.keyCode) ) json.left();
if(/39/.test(e.keyCode) ) json.right();
if(/13/.test(e.keyCode) ) json.init();
json.randomNum();
json.result();
}
</script>
<div style="text-align:center;">
</div>
</body>
</html>
