基于HTML+JavaScript实现中国象棋-前端开发

基于HTML+JavaScript实现中国象棋目录效果展示项目基本结构 HTML 代码 CSS 代码 JS 代码人工智能初始化迭代加深搜索算法取得棋盘上所有棋子取得棋谱所有己方棋子的算法 A:当前棋手value/B:对手value/depth:层级奖着法记录到历史表评估棋局取得棋

效果展示

在线演示地址

项目基本结构

目录结构如下：

HTML 代码

HTML 主要代码：

<div class="box" id="box">
	<div class="chess_left">
		<canvas id="chess">对不起，您的浏览器不支持HTML5，请升级浏览器至IE9、firefox或者谷歌浏览器！</canvas>
		<audio src="audio/click.wav" id="clickAudio" preload="auto"></audio>
		<!--<audio src="audio/check.wav" id="checkAudio" preload="auto"></audio>-->
		<audio src="audio/select.wav" id="selectAudio" preload="auto"></audio>
		<link rel="stylesheet" type="text/css" href="https://www.bootcss.com/p/buttons/css/buttons.css" rel="external nofollow" >
		<div>
			<div class="bn_box" id="bnBox">
				<input type="button" name="offensivePlay" id="tyroPlay" class="button button-caution button-pill button-jumbo" value="新手水平" />
				<input type="button" name="offensivePlay" id="superPlay" class="button button-caution button-pill button-jumbo" value="中级水平" />
                <input type="button" name="button" id="" value="大师水平" class="button button-caution button-pill button-jumbo" disabled /><br>
				<!--
			<input type="button" name="offensivePlay" id="offensivePlay" value="先手开始" />
			<input type="button" name="defensivePlay" id="defensivePlay" value="后手开始" />
			-->
				<input type="button" name="regret" id="regretBn" class="button button-raised button-pill button-inverse" value="悔棋" />
				<input type="button" name="billBn" id="billBn" value="重新开始" class="button button-glow button-rounded button-royal" class="bn_box" />
				<input type="button" name="stypeBn" id="stypeBn" class="button button-raised button-primary button-pill" value="放大棋局" />
			</div>
		</div>
	</div>
	<div class="chess_right" id="chessRight">
		<select name="billList" id="billList">
		</select>
		<ol id="billBox" class="bill_box">
		</ol>
	</div>
	<div id="moveInfo" class="move_info"> </div>
</div>

CSS 代码

CSS主要代码：

@charset "gb2312";
body {
	font-size: 12px;
	line-height: 150%;
}
.box {
	margin:0 auto;
	width:460px;
	position: relative;
}
.chess_left {
	float:left;
	text-align:center
}
.chess_right {
	float:left;
	display:none
}
.move_info {
	float:left;
	margin-top:20px
}
.bill_box {
	height: 320px;
	width: 80px;
	overflow:auto;
}
.bill_box li {
	cursor:pointer;
	text-align:left
}
.bill_box li:hover {
	cursor:pointer;
	background: #C6A577;
}
.bill_box li:active {
	cursor:pointer;
	background: #fff;
}
#billList {
	margin-top:20px
}
.bn_box {
	display:none
}

JS 代码

JS代码较多这里只展示部分JS代码

人工智能初始化

AI.init = function(pace){
	var bill = AI.historyBill || com.gambit; //开局库
	if (bill.length){
		var len=pace.length;
		var arr=[];
		//先搜索棋谱
		for (var i=0;i< bill.length;i++){
			if (bill[i].slice(0,len)==pace) {
			arr.push(bill[i]);
			}
		}
		if (arr.length){
			var inx=Math.floor( Math.random() * arr.length );
			AI.historyBill = arr ;
			return arr[inx].slice(len,len+4).split("");
		}else{
			AI.historyBill = [] ;
		}

	}
	 //如果棋谱里面没有，人工智能开始运作
	var initTime = new Date().getTime();
	AI.treeDepth=play.depth;
	//AI.treeDepth=4;

	AI.number=0;
	AI.setHistoryTable.lenght = 0

	var val=AI.getAlphaBeta(-99999 ,99999, AI.treeDepth, com.arr2Clone(play.map),play.my);
	//var val = AI.iterativeSearch(com.arr2Clone(play.map),play.my)
	if (!val||val.value==-8888) {
		AI.treeDepth=2;
		val=AI.getAlphaBeta(-99999 ,99999, AI.treeDepth, com.arr2Clone(play.map),play.my);
	}
	//var val = AI.iterativeSearch(com.arr2Clone(play.map),play.my);
	if (val&&val.value!=-8888) {
		var man = play.mans[val.key];
		var nowTime= new Date().getTime();
		com.get("moveInfo").innerHTML='<h3>AI搜索结果：</h3>最佳着法：'+
										com.createMove(com.arr2Clone(play.map),man.x,man.y,val.x,val.y)+
										'<br />搜索深度：'+AI.treeDepth+'<br />搜索分支：'+
										AI.number+'个 <br />最佳着法评估：'+
										val.value+'分'+
										' <br />搜索用时：'+
										(nowTime-initTime)+'毫秒'
		return [man.x,man.y,val.x,val.y]
	}else {
		return false;
	}
}

迭代加深搜索算法

AI.iterativeSearch = function (map, my){
	var timeOut=100;
	var initDepth = 1;
	var maxDepth = 8;
	AI.treeDepth=0;
	var initTime = new Date().getTime();
	var val = {};
	for (var i=initDepth; i<=maxDepth; i++){
		var nowTime= new Date().getTime();
		AI.treeDepth=i;
		AI.aotuDepth=i;
		var val = AI.getAlphaBeta(-99999, 99999, AI.treeDepth , map ,my)
		if (nowTime-initTime > timeOut){
			return val;
		}
	}
	return false;
}

取得棋盘上所有棋子

AI.getMapAllMan = function (map, my){
	var mans=[];
	for (var i=0; i<map.length; i++){
		for (var n=0; n<map[i].length; n++){
			var key = map[i][n];
			if (key && play.mans[key].my == my){
				play.mans[key].x = n;
				play.mans[key].y = i;
				mans.push(play.mans[key])
			}
		}
	}
	return mans;
}

取得棋谱所有己方棋子的算法

AI.getMoves = function (map, my){
	var manArr = AI.getMapAllMan (map, my);
	var moves = [];
	var foul=play.isFoul;
	for (var i=0; i<manArr.length; i++){
		var man = manArr[i];
		var val=man.bl(map);

		for (var n=0; n<val.length; n++){
			var x=man.x;
			var y=man.y;
			var newX=val[n][0];
			var newY=val[n][1];
			 //如果不是长将着法
			if (foul[0]!=x || foul[1]!=y || foul[2]!=newX || foul[3]!=newY ){
				moves.push([x,y,newX,newY,man.key])
			}
		}
	}
	return moves;
}

A:当前棋手value/B:对手value/depth：层级

AI.getAlphaBeta = function (A, B, depth, map ,my) {
	//var txtMap= map.join();
	//var history=AI.historyTable[txtMap];
	//	if (history && history.depth >= AI.treeDepth-depth+1){
	//		return 	history.value*my;
	/