html,js,css综合练习-2048游戏(使用表格布局)
网页版2048#tblAll,#tblAll td {border: 1px solid blue;border-collapse: collapse;}#tblAll {width: 100%;}/*菜单所在容器*/#divMenu {text-align: right;border: 1px solid green;}#gameName {fon
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>网页版2048</title>
<style type="text/css">
#tblAll,#tblAll td {
border: 1px solid blue;
border-collapse: collapse;
}
#tblAll {
width: 100%;
}
/*菜单所在容器*/
#divMenu {
text-align: right;
border: 1px solid green;
}
#gameName {
font-size: 2em;
font-weight: bold;
}
#tblScore,#tblScore td {
border: 1px solid blue;
border-collapse: collapse;
}
#tblScore {
width: 100%;
margin-bottom: 2em;
table-layout: fixed;
}
.score {
text-align: center;
background-color: gray;
}
#tblBtns {
width: 100%;
}
#tdRestart {
width: 50%;
text-align: left;
}
#tdUndo {
width: 50%;
text-align: right;
}
#tblGame {
width: 100%;
/*设置表格的单元格不会因为内容而改变大小*/
table-layout: fixed;
/*设置单元格之间的间距*/
border-spacing: 0.3em;
background-color: rgb(187, 173, 160);
}
#tblGame td {
background-color: rgb(204, 192, 178);
text-align: center;
vertical-align: middle;
font-size: 5;
font-weight: bold;
border: none;
}
</style>
<script type="text/javascript">
//定义各个数字对应的背景色和字体颜色
var arrColor = [];
arrColor.push("rgb(238,228,218)");//2的背景色
arrColor.push("rgb(110,100,90)");//2的字体色
arrColor.push("rgb(236,224,202)");//4的背景色
arrColor.push("rgb(127,115,99)");//4的字体色
arrColor.push("rgb(243,176,123)");//8的背景色
arrColor.push("rgb(255,234,202)");//8的字体色
arrColor.push("rgb(246,148,99)");//16的背景色
arrColor.push("rgb(255,235,209)");//16的字体色
//缓存数组,每次移动之前记录下单元格的数字信息,用于undo
var cache = [];
window.onresize = resizeTD;
window.onload = function() {
resizeTD();
resetGame();
$("tdRestart").onclick = function() {
resetGame();
}
document.body.onkeypress = function(e) {
switch (e.charCode) {
case 119:
//按下w键视作按方向键上
console.log("press w");
move(1);
break;
case 115:
//按下s键视作按方向键下
console.log("press s");
move(2);
break;
case 97:
//按下a键视作按方向键左
console.log("press a");
move(3);
break;
case 100:
//按下d键视作按方向键右
console.log("press d");
move(4);
}
}
$("tdUndo").onclick = function() {
//获取游戏表格
var tblGame = $("tblGame");
//获取游戏表格的所有单元格
var td_tblGame = tblGame.getElementsByTagName("td");
var tmpCache = cache.pop();
if (tmpCache) {
for ( var i = 0; i < tmpCache.length; i++) {
var text = tmpCache[i];
td_tblGame[i].innerText = text;
if (text == "") {
td_tblGame[i].style.backgroundColor = "rgb(204, 192, 178)";
} else {
var num = parseInt(text);
td_tblGame[i].style.backgroundColor = getBgColor(num);
td_tblGame[i].style.color = getColor(num);
}
}
}
}
};
function resizeTD() {
//获取游戏表格
var tblGame = $("tblGame");
//获取游戏表格的所有单元格
var td_tblGame = tblGame.getElementsByTagName("td");
for ( var i = 0; i < td_tblGame.length; i++) {
//设置单元格的高度
td_tblGame[i].style.height = td_tblGame[i].offsetWidth + "px";
//设置单元格的字体大小
td_tblGame[i].style.fontSize = Math.round(td_tblGame[i].offsetWidth * 0.5) + "px";
}
}
//重置游戏
function resetGame() {
//获取游戏表格
var tblGame = $("tblGame");
//获取游戏表格的所有单元格
var td_tblGame = tblGame.getElementsByTagName("td");
for ( var i = 0; i < td_tblGame.length; i++) {
//清空所有单元格中的数据
td_tblGame[i].innerText = "";
//重置所有单元的背景色为初始状态
td_tblGame[i].style.backgroundColor = "rgb(204, 192, 178)";
}
//随机选取两个不一样的单元格,设置他们的数据为2或者4
var firstRandom = getRandom(0, 15);
var secondRandom = firstRandom;
while (secondRandom == firstRandom) {
secondRandom = getRandom(0, 15);
}
var num = getRandom(1, 2) * 2;
var color = getColor(num);
var bgColor = getBgColor(num);
td_tblGame[firstRandom].innerText = num;
td_tblGame[firstRandom].style.color = color;
td_tblGame[firstRandom].style.backgroundColor = bgColor;
num = getRandom(1, 2) * 2;
color = getColor(num);
bgColor = getBgColor(num);
td_tblGame[secondRandom].innerText = num;
td_tblGame[secondRandom].style.color = color;
td_tblGame[secondRandom].style.backgroundColor = bgColor;
//清空当前分数
var tdScore = $("tdScore");
tdScore.innerText = 0;
//设置缓存
cache.length = 0;
var tmpCache = [];
for ( var i = 0; i < td_tblGame.length; i++) {
tmpCache.push(td_tblGame[i].innerText);
}
cache.push(tmpCache);
}
function $(id) {
return document.getElementById(id);
}
//获取随机数,范围begin-end
function getRandom(begin, end) {
var range = end - begin;
return begin + Math.round(Math.random() * range);
}
//获取某个数字对应的字体颜色
function getColor(num) {
var result = Math.log(num) / Math.log(2);
return arrColor[result * 2 - 1];
}
//获取某个数字对应的背景颜色
function getBgColor(num) {
var result = Math.log(num) / Math.log(2);
return arrColor[result * 2 - 2];
}
//移动方法,按照direction方向区分
//1表示上,2表示下,3表示左,4表示右
function move(direction) {
//a表示循环变量i前面的因子,b表示循环变量j前面的因子,c表示常量
var a, b, c;
switch (direction) {
case 1:
a = 1;
b = 4;
c = 0;
break;
case 2:
a = 1;
b = -4;
c = 12;
break;
case 3:
a = 4;
b = 1;
c = 0;
break;
case 4:
a = 4;
b = -1;
c = 3;
break;
}
//获取游戏表格
var tblGame = $("tblGame");
//获取游戏表格的所有单元格
var td_tblGame = tblGame.getElementsByTagName("td");
//记录单元格的数字信息,用于undo,暂时只能undo一步,用于调试
//添加缓存
var tmpCache = [];
for ( var i = 0; i < td_tblGame.length; i++) {
tmpCache.push(td_tblGame[i].innerText);
}
cache.push(tmpCache);
//是否生成新数字的标记
var generateNew = false;
for ( var i = 0; i < 4; i++) {
//去除空格,其实就是将稀疏数组转换成密集数组
for ( var j = 0; j < 4; j++) {
text = td_tblGame[a * i + b * j + c].innerText;
num = text == "" ? 0 : parseInt(text);
if (text != "") {
//如果当前单元格的内容不为空,则向前遍历找到第一个内容不为空的单元格
//则该单元格的索引+1即为交换位置的点
for ( var k = j - 1; k > -1; k--) {
var textPos = td_tblGame[a * i + b * k + c].innerText;
if (textPos != "") {
break;
}
}
if (k + 1 != j) {
//将生成新数字标记置为true
generateNew = true;
//交换两个单元格的值
td_tblGame[a * i + b * (k + 1) + c].innerText = text;
td_tblGame[a * i + b * (k + 1) + c].style.backgroundColor = getBgColor(num);
td_tblGame[a * i + b * (k + 1) + c].style.color = getColor(num);
td_tblGame[a * i + b * j + c].innerText = "";
td_tblGame[a * i + b * j + c].style.backgroundColor = "rgb(204, 192, 178)";
}
}
}
//将相邻单元格数字相同的合成
for ( var j = 0; j < 3; j++) {
//当前单元格中的文本
var text = td_tblGame[a * i + b * j + c].innerText;
//当前单元格中的数字
var num = text == "" ? 0 : parseInt(text);
//后面单元格中的文本
var textNext = td_tblGame[a * i + b * (j + 1) + c].innerText;
//后面一个单元格中的数字
var numNext = textNext == "" ? 0 : parseInt(textNext);
//如果两个数字相等,那么当前单元格数字乘以2,清空后面的单元格
if (num == numNext && num != 0) {
//将生成新数字标记置为true
generateNew = true;
td_tblGame[a * i + b * j + c].innerText = num * 2;
td_tblGame[a * i + b * j + c].style.backgroundColor = getBgColor(num * 2);
td_tblGame[a * i + b * j + c].style.color = getColor(num * 2);
td_tblGame[a * i + b * (j + 1) + c].innerText = "";
td_tblGame[a * i + b * (j + 1) + c].style.backgroundColor = "rgb(204, 192, 178)";
}
}
//去除空格,其实就是将稀疏数组转换成密集数组
for ( var j = 0; j < 4; j++) {
text = td_tblGame[a * i + b * j + c].innerText;
num = text == "" ? 0 : parseInt(text);
if (text != "") {
//如果当前单元格的内容不为空,则向前遍历找到第一个内容不为空的单元格
//则该单元格的索引+1即为交换位置的点
for ( var k = j - 1; k > -1; k--) {
var textPos = td_tblGame[a * i + b * k + c].innerText;
if (textPos != "") {
break;
}
}
if (k + 1 != j) {
//将生成新数字标记置为true
generateNew = true;
//交换两个单元格的值
td_tblGame[a * i + b * (k + 1) + c].innerText = text;
td_tblGame[a * i + b * (k + 1) + c].style.backgroundColor = getBgColor(num);
td_tblGame[a * i + b * (k + 1) + c].style.color = getColor(num);
td_tblGame[a * i + b * j + c].innerText = "";
td_tblGame[a * i + b * j + c].style.backgroundColor = "rgb(204, 192, 178)";
}
}
}
}
//将内容为空的单元格索引组成一个数组
var arrIndex = [];
for ( var i = 0; i < 16; i++) {
text = td_tblGame[i].innerText;
if (text == "") {
arrIndex.push(i);
}
}
if (arrIndex.length == 0) {
//如果索引数组长度为0,则游戏结束
alert("game over");
} else if (generateNew) {
//如果生成新数字标记置为true,则将所有空白单元格的索引构成一个数组,随机生成一个索引
var randomIndex = getRandom(0, arrIndex.length - 1);
var randomNum = getRandom(1, 2) * 2;
td_tblGame[randomIndex].innerText = randomNum;
td_tblGame[randomIndex].style.color = getColor(randomNum);
td_tblGame[randomIndex].style.backgroundColor = getBgColor(randomNum);
}
}
</script>
</head>
<body>
<table id="tblAll">
<tr>
<td width="30%"></td>
<!-- 中间的内容列 -->
<td width="40%">
<div id="divMenu">
<input type="button" id="btnMenu" value="菜单" />
</div>
<table id="tblScore">
<tr>
<td rowspan="2" id="gameName" width="40%">2048</td>
<td class="score" width="30%">当前分</td>
<td class="score" width="30%">最高分</td>
</tr>
<tr>
<td class="score" id="tdScore">1333333</td>
<td class="score" id="tdBest">1333333</td>
</tr>
</table>
<table id="tblBtns">
<tr>
<td id="tdRestart">RESTART</td>
<td id="tdUndo">UNDO</td>
</tr>
</table> <!-- 这个是最下面的游戏的主表格 -->
<table id="tblGame">
<tr>
<td width="25%"></td>
<td width="25%"></td>
<td width="25%"></td>
<td width="25%"></td>
</tr>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</table>
</td>
<td width="30%"></td>
</tr>
</table>
</body>
</html>
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