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  • js+canvas实现象棋的布局、走棋位置提示、走棋代码

    <!DOCTYPE html>
    <html>
    	<head>
    		<meta charset="UTF-8">
    		<title></title>
    		<style>
    			*{padding:0 ;margin: 0;}
    			html,body{ 100%;height: 100%;}
    			canvas{margin: 0 auto;display: block;}
    		</style>
    	</head>
    	<body>
    		<canvas id="chess">不支持canvas</canvas>
    		
    		<script src="./myChess.js" type="text/javascript" charset="utf-8"></script>
    		<!--<script src="js/chessPiece.js" type="text/javascript" charset="utf-8"></script>-->
    		<script type="text/javascript">
    			var chess = new Chess("chess");
    		</script>
    	</body>
    </html>
    

      

    class Chess{
    	constructor(canvasId){
    		this.canvas = document.getElementById(canvasId);
    		this.ctx = this.canvas.getContext("2d");
    		
    		this.initCanvas();
    		
    		this.resetData();
    		
    	}
    	
    	// 重置数据,再来一局
    	resetData(){
    		this.redBottom = true; // 红方在下边(这个属性可以用来给不同的用户显示不同的棋盘)
    		this.toMove = {};
    		this.active = "red"; // 当前走棋方
    		this.bottomColor = "red"; // 红方在下边
    		this.chessSteps = []; // 走棋记录
    		
    		this.initChessBoard();
    		this.initComposition();
    		this.drawPieces();
    	}
    	
    	// 切换走棋方
    	exchange(){
    		this.active = this.active == 'red' ? 'black' : 'red';
    		// this.reverseChess();
    	}
    	
    	// 反转棋局数组
    	reverseChess() {
    		this.composition = this.deepReverse(this.composition);
    	}
    	
    	// 渲染棋盘和棋子
    	renderUi() {
    		//清除之前的画布
    		this.ctx.clearRect(0, 0, this.width, this.height);
    		this.initChessBoard();
    		this.drawPieces();
    	}
    	
    	// 输赢判断
    	getVictor() {
    		var flag = false;
    		for(let i = 0, len = this.composition.length; i < len; i++){
    			for(let j = 0, len1 = this.composition[i].length; j < len1; j++){
    //				if(){
    //					
    //				}
    			}
    		}
    	}
    	
    	// 初始化canvas并绑定点击事件
    	initCanvas(){
    		// var bodys = document.documentElement || document.body;
    		var body = document.body;
    		// console.log("%O",body);
    		var h = body.clientHeight;
    		var w = body.clientWidth;
    		if(h>w){
    			this.cellWidth = w / 10;
    		}else{
    			this.cellWidth = h / 11;
    		}
    		this.width = this.cellWidth * 10;
    		this.height = this.cellWidth * 11;
    		this.canvas.width = this.width;
    		this.canvas.height = this.height;
    		
    		// 绑定点击事件
    		this.canvas.addEventListener("click",(e)=>{
    			var offset = this.canvas.getBoundingClientRect();
    			var x = Math.round((e.clientX - offset.left - this.cellWidth) / this.cellWidth);
    			var y = Math.round((e.clientY - offset.top - this.cellWidth) / this.cellWidth);
    			// console.log(x, y, "点击位置");
    			// 走棋
    			if(x>=0 && x<=8 && y<=9 && y>=0){
    				this.goStep(y, x);
    				console.log(this.chessSteps);
    			}else{
    				console.log("点在其他地方,没在棋局中");
    			}
    		},false);
    		
    	}
    	
    	// 初始化棋盘
    	initChessBoard(){
    		//设置全局属性
    		var padding = 2;
    		var borderWidth = 5;
    		var borderColor = "#333";
    		var bgColor = "#a6753a";
    		var lineColor = "#333";
    		var fontColor = bgColor;
    		var bgWidth = this.cellWidth - borderWidth - padding;
    		
    		
    		// 画边框
    		this.ctx.strokeStyle = bgColor;
    		this.ctx.lineWidth = bgWidth*2;
    		this.ctx.lineJoin = "miter";
    		this.ctx.beginPath();
    		this.ctx.moveTo(0,0);
    		this.ctx.lineTo(this.width,0);
    		this.ctx.lineTo(this.width,this.height);
    		this.ctx.lineTo(0,this.height);
    		this.ctx.closePath();
    		this.ctx.stroke();
    		
    		// 画外边线
    		this.ctx.strokeStyle = borderColor;
    		this.ctx.lineWidth = borderWidth;
    		this.ctx.lineJoin = "miter";
    		this.ctx.beginPath();
    		this.ctx.moveTo(0+bgWidth,0+bgWidth);
    		this.ctx.lineTo(0+this.width-bgWidth,0+bgWidth);
    		this.ctx.lineTo(this.width-bgWidth,this.height-bgWidth);
    		this.ctx.lineTo(0+bgWidth,this.height-bgWidth);
    		this.ctx.stroke();
    		
    		this.ctx.save();
    		
    		this.ctx.translate(this.cellWidth,this.cellWidth);
    		this.ctx.beginPath();
    		// 画横线
    		for(let i = 0; i < 10; i++){
    			this.ctx.moveTo(0,this.cellWidth*i);
    			this.ctx.lineTo(this.cellWidth*8, this.cellWidth*i);
    		}
    		
    		// 画纵线
    		for(let i = 0; i < 9; i++){
    			this.ctx.moveTo(this.cellWidth*i, 0);
    			this.ctx.lineTo(this.cellWidth*i, this.cellWidth*4);
    			this.ctx.moveTo(this.cellWidth*i, this.cellWidth*5);
    			this.ctx.lineTo(this.cellWidth*i, this.cellWidth*9);
    		}
    		
    		// 链接断线
    		this.ctx.moveTo(0, this.cellWidth*4);
    		this.ctx.lineTo(0, this.cellWidth*5);
    		this.ctx.moveTo(this.cellWidth*8, this.cellWidth*4);
    		this.ctx.lineTo(this.cellWidth*8, this.cellWidth*5);
    		
    		this.ctx.strokeStyle = lineColor;
    		this.ctx.lineWidth = 1;
    		this.ctx.stroke();
    		
    		// 写(楚河、汉界)汉字
    		this.ctx.font = `${this.cellWidth*0.75}px 方正舒体`; // 隶书  方正舒体
    		this.ctx.fillStyle = fontColor;
    		this.ctx.textBaseline = "middle";
    		this.ctx.textAlign = "center";
    		this.ctx.fillText("楚",this.cellWidth*1.5, this.cellWidth*4.5);
    		this.ctx.fillText("河",this.cellWidth*2.5, this.cellWidth*4.5);
    		this.ctx.fillText("汉",this.cellWidth*5.5, this.cellWidth*4.5);
    		this.ctx.fillText("界",this.cellWidth*6.5, this.cellWidth*4.5);
    		
    		// 画炮位
    		var paoArr = [{x:1,y:2},{x:7,y:2},{x:7,y:7},{x:1,y:7}];
    		for(let i=0, len=paoArr.length; i<len; i++){
    			this.markP(paoArr[i].x,paoArr[i].y);
    		}
    		// 画兵和卒位
    		var bingArr = [];
    		for(let i=0; i<9; i+=2){
    			bingArr.push({x:i, y:3});
    			bingArr.push({x:i, y:6});
    		}
    		
    		// 画皇宫
    		this.ctx.beginPath();
    		this.ctx.moveTo(this.cellWidth*3, 0);
    		this.ctx.lineTo(this.cellWidth*5, this.cellWidth*2);
    		this.ctx.moveTo(this.cellWidth*5, 0);
    		this.ctx.lineTo(this.cellWidth*3, this.cellWidth*2);
    		
    		this.ctx.moveTo(this.cellWidth*3, this.cellWidth*9);
    		this.ctx.lineTo(this.cellWidth*5, this.cellWidth*7);
    		this.ctx.moveTo(this.cellWidth*5, this.cellWidth*9);
    		this.ctx.lineTo(this.cellWidth*3, this.cellWidth*7);
    		this.ctx.stroke();
    		
    		for(let i=0, len=bingArr.length; i<len; i++){
    			this.markP(bingArr[i].x,bingArr[i].y);
    		}
    		
    		this.ctx.restore();
    	}
    	
    	// 方向数字化
    	nd(direction){
    		var res = {h:0,v:0}; // h horizontal v vertical
    		switch(direction){
    			case "r":
    				res.h = 1;
    				res.v = 0;
    				break;
    			case "rd":
    				res.h = 1;
    				res.v = 1;
    				break;
    			case "d":
    				res.h = 0;
    				res.v = 1;
    				break;
    			case "ld":
    				res.h = -1;
    				res.v = 1;
    				break;
    			case "l":
    				res.h = -1;
    				res.v = 0;
    				break;
    			case "lt":
    				res.h = -1;
    				res.v = -1;
    				break;
    			case "t":
    				res.h = 0;
    				res.v = -1;
    				break;
    			case "rt":
    				res.h = 1;
    				res.v = -1;
    				break;
    			default: console.error("方向输入有误");
    		}
    		return res;
    	}
    		
    	markP(x,y){ // 标出上下左右
    		var arr = [];
    		if(x === 0){
    			arr = ["rt","rd"];
    		}else if(x === 8){
    			arr = ["lt","ld"];
    		}else{
    			arr = ["lt","rt","rd","ld"];
    		}
    		
    		var padding = this.cellWidth/10;
    		var length = this.cellWidth/5
    		for(let i=0;i<arr.length;i++){
    			this.mark(x, y, arr[i], padding, length);
    		}
    	}
    	
    	// 四个标记中的一个
    	mark(x, y, direction, padding, length){
    		var d = this.nd(direction);
    		var h = d.h;
    		var v = d.v;
    		
    		this.ctx.beginPath();
    		this.ctx.moveTo(this.cellWidth*x+h*(padding+length), this.cellWidth*y+v*padding);
    		this.ctx.lineTo(this.cellWidth*x+h*padding, this.cellWidth*y+v*padding);
    		this.ctx.lineTo(this.cellWidth*x+h*padding, this.cellWidth*y+v*(padding+length));
    		this.ctx.stroke();
    	}
    	
    	// 初始化棋局
    	initComposition(){
    		var origin = [
    			["車","馬","象","士","将","士","象","馬","車"],
    			["","","","","","","","",""],
    			["","炮","","","","","","炮",""],
    			["卒","","卒","","卒","","卒","","卒"],
    			["","","","","","","","",""],
    			["","","","","","","","",""],
    			["兵","","兵","","兵","","兵","","兵"],
    			["","砲","","","","","","砲",""],
    			["","","","","","","","",""],
    			["車","馬","相","仕","帥","仕","相","馬","車"]
    		];
    		
    		this.composition = [];
    		for(let i = 0, len = origin.length; i<len; i++){
    			this.composition[i] = [];
    			for(let j=0,len1=origin[i].length; j<len1; j++){
    				if(origin[i][j] == ""){
    					this.composition[i][j] = null;
    				}else{
    					if(i<=4){ // 黑方
    						this.composition[i][j] = {color:"black",text:origin[i][j]};
    					}else{ // 红方
    						this.composition[i][j] = {color:"red",text:origin[i][j]};
    					}
    				}
    			}
    		}
    		console.log(this.composition);
    	}
    	
    	// 画所有的棋子
    	drawPieces(){
    		for(let i=0, len=this.composition.length; i<len; i++){
    			for(let j=0, len1=this.composition[i].length; j<len1; j++){
    				if(this.composition[i][j]){
    					// this.composition[i][j].drawOnePiece();
    					this.drawOnePiece(j,i,this.composition[i][j].text,this.composition[i][j].color)
    				}
    			}
    		}
    	}
    	
    	// 画一个棋子
    	drawOnePiece(x,y,text,color){
    		var r = this.cellWidth * 0.45;
    		var xx = this.cellWidth * x + this.cellWidth;
    		var yy = this.cellWidth * y + this.cellWidth;
    		var bgColor = "black";//"#eab885";
    		
    		this.ctx.save();
    		let radgrad = this.ctx.createRadialGradient(xx,yy,r,xx,yy,r*0.8);
    		radgrad.addColorStop(0,"#de9555");
    		radgrad.addColorStop(0.75,"#de9555");
    		radgrad.addColorStop(1,"#eab885");
    		this.ctx.fillStyle = radgrad;
    		this.ctx.beginPath();
    		this.ctx.arc(xx, yy,r,0,Math.PI*2);
    		this.ctx.shadowOffsetX = 3;
    		this.ctx.shadowOffsetY = 3;
    		this.ctx.shadowBlur = 1;
    		this.ctx.shadowColor = "rgba(53,29,4,0.7)";
    		this.ctx.fill();
    		this.ctx.restore();
    		
    		this.ctx.font = `${r*2*0.75}px 隶书`; // 隶书  方正舒体
    		this.ctx.fillStyle = color;
    		this.ctx.textBaseline = "middle";
    		this.ctx.textAlign = "center";
    		this.ctx.fillText(text,xx,yy);
    	}
    	
    //	hightLight(x,y){
    //		
    //	}
    	
    	goStep(x, y){
    		// 已经选择了——1.换一个;(2.移动;3.吃子;)4.乱走;
    		// 没有选择——1.选一个;2.乱选;
    		if(Object.keys(this.toMove).length){
    			if(this.composition[x] && this.composition[x][y] && this.composition[x][y].color == this.active){ // 选择我方的棋子
    				this.chooseToMove(x, y);
    			}else{// 选择敌方的棋子
    				if(this.inRange(x, y)){ // 吃子
    					this.move(x, y);
    				}else{ // 乱选
    					console.log("还没有轮到你走棋");
    				}
    			}
    		}else{
    			if(this.composition[x] && this.composition[x][y] && this.composition[x][y].color == this.active){ // 选择我方的棋子
    				this.chooseToMove(x, y);
    			}
    		}
    		
    		// 点在棋子上——选择、吃子、乱点
    		// 点在空位置上——移动、乱移动
    		/*if(this.composition[x][y]){ // 注意,这里的x和y的顺序没有写错
    			if(this.composition[x] && this.composition[x][y].color == this.active){ // 选择我方的棋子
    				this.chooseToMove(x, y);
    			}else{// 选择敌方的棋子
    				if(this.inRange(x, y)){ // 吃子
    					this.move(x, y);
    				}else{ // 乱选
    					console.log("还没有轮到你走棋");
    				}
    			}
    		}else{
    			if(this.inRange(x, y)){ // 移动到空位置
    				this.move(x, y);
    			}else{ // 乱移动
    				console.warn("好好走");
    			}
    		}*/
    	}
    	
    	// 已选择棋子是否可以移动
    	oneCanMove() {
    		if(this.moveRange.length) {
    			return true;
    		} else {
    			return false;
    		}
    	}
    	
    	// 选择移动的棋子
    	chooseToMove(x, y) {
    		this.renderUi();
    		this.getMoveRange(x, y);
    		this.hint();
    		
    		this.toMove = {};
    		if(this.oneCanMove()) {
    			this.toMove.x = x;
    			this.toMove.y = y;
    			this.toMove.data = this.composition[x][y];
    			//this.highLight();
    		} else {
    			this.clearChoose();
    			console.warn("这个棋子不可以移动");
    		}
    		// console.log(this.toMove, "选择后的要移动的棋子")
    	}
    
    	// 判断移动的最终位置是否在移动范围内
    	inRange(x, y) {
    		var flag = false;
    		for(let i = 0, len = this.moveRange.length; i < len; i++) {
    			if(x == this.moveRange[i].x && y == this.moveRange[i].y) {
    				flag = true;
    				break;
    			}
    		}
    		return flag;
    	}
    	
    	// 是否为敌方 或 空    走棋用的判断
    	isEnemyOrEmpty(x, y, color){
    		if(this.composition[x] && this.composition[x][y] === null){
    			return true;
    		}else{
    			if(this.composition[x] && this.composition[x][y] && this.composition[x][y].color != color){
    				return true;
    			}else{
    				return false;
    			}
    		}
    	}
    	
    	// 显示可以走的位置
    	hint(){
    		//console.log(this.moveRange,"移动范围")
    		for(let i=0, len = this.moveRange.length; i<len; i++){
    			this.drawHint(this.moveRange[i].x,this.moveRange[i].y);
    		}
    	}
    	
    	// 画一个提示点
    	drawHint(x,y){
    		this.ctx.beginPath();
    		var cx = this.cellWidth * y + this.cellWidth;
    		var cy = this.cellWidth * x + this.cellWidth;
    		this.ctx.arc(cx, cy, this.cellWidth*0.1, 0, Math.PI*2);
    		this.ctx.fillStyle = "#e73480";
    		this.ctx.fill();
    	}
    	
    	// 是否为空判断
    	isEmpty(x, y) {
    		if(this.composition[x] && this.composition[x][y] === null) {
    			return true;
    		}else {
    			return false;
    		}
    	}
    	
    	// 是否为敌判断
    	isEnemy(x, y, color) {
    		if(this.composition[x] && this.composition[x][y] && this.composition[x][y].color != color) {
    			return true;
    		}else {
    			return false;
    		}
    	}
    	
    	// 已选择棋子的移动范围 	参数:棋子在棋局中的位置
    	getMoveRange(x,y){ // 
    		this.moveRange = [];
    		var moveRange = [];
    		
    		var color = this.composition[x] && this.composition[x][y].color;
    		var darr; // 需要判断的移动方向
    		switch(this.composition[x][y].text){
    			case "車": 
    			case "车":
    				for(let j = 1; j<y+1; j++){
    					if(this.isEmpty(x, y-j)){
    						moveRange.push({x: x, y: y-j});
    					}else{
    						if(this.isEnemy(x, y-j, color)) {
    							moveRange.push({x: x, y: y-j});
    						}
    						break;
    					}
    				}
    				for(let j = 1; j<x+1; j++){
    					if(this.isEmpty(x-j, y)){
    						moveRange.push({x: x-j, y: y});
    					}else{
    						if(this.isEnemy(x-j, y, color)) {
    							moveRange.push({x: x-j, y: y});
    						}
    						break;
    					}
    				}
    				for(let j = 1; j<9-y; j++){
    					if(this.isEmpty(x, y+j)){
    						moveRange.push({x: x, y: y+j});
    					}else{
    						if(this.isEnemy(x, y+j, color)) {
    							moveRange.push({x: x, y: y+j});
    						}
    						break;
    					}
    				}
    				for(let j = 1; j<10-x; j++){
    					if(this.isEmpty(x+j, y)){
    						moveRange.push({x: x+j, y: y});
    					}else{
    						if(this.isEnemy(x+j, y, color)) {
    							moveRange.push({x: x+j, y: y});
    						}
    						break;
    					}
    				}
    			break;
    			case "馬":
    			case "马":
    				if(this.isEnemyOrEmpty(x+1, y+2, color)){
    					if(this.composition[x] && this.composition[x][y+1] === null){
    						moveRange.push({x: x+1, y: y+2});
    					}
    				}
    				if(this.isEnemyOrEmpty(x+1, y-2, color)){
    					if(this.composition[x] && this.composition[x][y-1] === null){
    						moveRange.push({x: x+1, y: y-2});
    					}
    				}
    				if(this.isEnemyOrEmpty(x+2, y+1, color)){
    					if(this.composition[x+1] && this.composition[x+1][y] === null){
    						moveRange.push({x: x+2, y: y+1});
    					}
    				}
    				if(this.isEnemyOrEmpty(x+2, y-1, color)){
    					if(this.composition[x+1] && this.composition[x+1][y] === null){
    						moveRange.push({x: x+2, y: y-1});
    					}
    				}
    				if(this.isEnemyOrEmpty(x-2, y+1, color)){
    					if(this.composition[x-1] && this.composition[x-1][y] === null){
    						moveRange.push({x: x-2, y: y+1});
    					}
    				}
    				if(this.isEnemyOrEmpty(x-2, y-1, color)){
    					if(this.composition[x-1] && this.composition[x-1][y] === null){
    						moveRange.push({x: x-2, y: y-1});
    					}
    				}
    				if(this.isEnemyOrEmpty(x-1, y+2, color)){
    					if(this.composition[x] && this.composition[x][y+1] === null){
    						moveRange.push({x: x-1, y: y+2});
    					}
    				}
    				if(this.isEnemyOrEmpty(x-1, y-2, color)){
    					if(this.composition[x] && this.composition[x][y-1] === null){
    						moveRange.push({x: x-1, y: y-2});
    					}
    				}
    			break;
    			case "象":
    			case "相":
    				var rowlow, rowup, collow = 0, colup = 8; // 行和列的判断上下限
    				if(x > 4) { // 下方一边
    					rowlow = 5;
    					rowup = 9;
    				}else { // 上方一边
    					rowlow = 0;
    					rowup = 4;
    				}
    				if(x-2 >= rowlow && y-2 >= collow){
    					if(this.isEnemyOrEmpty(x-2, y-2, color)){
    						if(this.composition[x-1] && this.composition[x-1][y-1] === null){
    							moveRange.push({x: x-2, y: y-2});
    						}
    					}
    				}
    				if(x-2 >= rowlow && y+2 <= colup){
    					if(this.isEnemyOrEmpty(x-2, y+2, color)){
    						if(this.composition[x-1] && this.composition[x-1][y+1] === null){
    							moveRange.push({x: x-2, y: y+2});
    						}
    					}
    				}
    				if(x+2 <= rowup && y-2 >= collow){
    					if(this.isEnemyOrEmpty(x+2, y-2, color)){
    						if(this.composition[x+1] && this.composition[x+1][y-1] === null){
    							moveRange.push({x: x+2, y: y-2});
    						}
    					}
    				}
    				if(x+2 <= rowup && y+2 <= colup){
    					if(this.isEnemyOrEmpty(x+2, y+2, color)){
    						if(this.composition[x+1] && this.composition[x+1][y+1] === null){
    							moveRange.push({x: x+2, y: y+2});
    						}
    					}
    				}
    			break;
    			case "仕":
    			case "士":
    				var rowlow, rowup, collow = 3, colup = 5; // 行和列的判断上下限
    				if(x > 4) { // 下方一边
    					rowlow = 7;
    					rowup = 9;
    				}else { // 上方一边
    					rowlow = 0;
    					rowup = 2;
    				}
    				if(this.isEnemyOrEmpty(x-1, y-1, color)){
    					if(x-1 >= rowlow && y-1 >= collow){
    						moveRange.push({x: x-1, y: y-1});
    					}
    				}
    				if(this.isEnemyOrEmpty(x-1, y+1, color)){
    					if(x-1 >= rowlow && y+1 <= colup){
    						moveRange.push({x: x-1, y: y+1});
    					}
    				}
    				if(this.isEnemyOrEmpty(x+1, y-1, color)){
    					if(x+1 <= rowup && y-1 >= collow){
    						moveRange.push({x: x+1, y: y-1});
    					}
    				}
    				if(this.isEnemyOrEmpty(x+1, y+1, color)){
    					if(x+1 <= rowup && y+1 <= colup){
    						moveRange.push({x: x+1, y: y+1});
    					}
    				}
    			break;
    			case "将":
    			case "帥":
    			case "帅":
    				var rowlow, rowup, collow = 3, colup = 5; // 行和列的判断上下限
    				if(x > 4) { // 下方一边
    					rowlow = 7;
    					rowup = 9;
    				}else { // 上方一边
    					rowlow = 0;
    					rowup = 2;
    				}
    				if(this.isEnemyOrEmpty(x-1, y, color)){
    					if(x-1 >= rowlow){ // 老将不越上边界
    						moveRange.push({x: x-1, y: y});
    					}
    				}
    				if(this.isEnemyOrEmpty(x+1, y, color)){
    					if(x+1 <= rowup){ // 老将不越下边界
    						moveRange.push({x: x+1, y: y});
    					}
    				}
    				if(this.isEnemyOrEmpty(x, y-1, color)){
    					if(y-1 >= collow){ // 老将不越左边界
    						moveRange.push({x: x, y: y-1});
    					}
    				}
    				if(this.isEnemyOrEmpty(x, y+1, color)){
    					if(y+1 <= colup){ // 老将不越右边界
    						moveRange.push({x: x, y: y+1});
    					}
    				}
    			break;
    			case "炮":
    			case "砲":
    				var count = 0;
    				// 上方
    				count = 0;
    				for(let j = 1; j<y+1; j++){
    					if(this.composition[x][y-j] === null){
    						if(count === 0){
    							moveRange.push({x: x, y: y-j});
    						}
    					}else if(this.composition[x][y-j].color){
    						count++;
    						if(count === 2 && this.composition[x][y-j].color != color){
    							moveRange.push({x: x, y: y-j});
    						}
    					}
    					
    					if(count >= 2){
    						break;
    					}
    				}
    				// 下
    				count = 0;
    				for(let j = 1; j<9-y; j++){
    					if(this.composition[x][y+j] === null){
    						if(count === 0){
    							moveRange.push({x: x, y: y+j});
    						}
    					}else if(this.composition[x][y+j].color){
    						count++;
    						if(count === 2 && this.composition[x][y+j].color != color){
    							moveRange.push({x: x, y: y+j});
    						}
    					}
    					
    					if(count >= 2){
    						break;
    					}
    				}
    				// 左
    				count = 0;
    				for(let j = 1; j<x+1; j++){
    					if(this.composition[x-j][y] === null){
    						if(count === 0){
    							moveRange.push({x: x-j, y: y});
    						}
    					}else if(this.composition[x-j][y].color){
    						count++;
    						if(count === 2 && this.composition[x-j][y].color != color){
    							moveRange.push({x: x-j, y: y});
    						}
    					}
    					
    					if(count >= 2){
    						break;
    					}
    				}
    				// 右
    				count = 0;
    				for(let j = 1; j<10-x; j++){
    					if(this.composition[x+j][y] === null){
    						if(count === 0){
    							moveRange.push({x: x+j, y: y});
    						}
    					}else if(this.composition[x+j][y].color){
    						count++;
    						if(count === 2 && this.composition[x+j][y].color != color){
    							moveRange.push({x: x+j, y: y});
    						}
    					}
    					
    					if(count >= 2){
    						break;
    					}
    				}
    			break;
    			case "兵":
    			case "卒":
    				if(this.bottomColor == color){
    					if(x >= 5){// 过河前
    						if(this.isEnemyOrEmpty(x-1, y, color)){
    							moveRange.push({x: x-1, y: y});
    						}
    					}else{// 过河后
    						if(this.isEnemyOrEmpty(x-1, y, color)){
    							moveRange.push({x: x-1, y: y});
    						}
    						if(this.isEnemyOrEmpty(x, y-1, color)){
    							moveRange.push({x: x, y: y-1});
    						}
    						if(this.isEnemyOrEmpty(x, y+1, color)){
    							moveRange.push({x: x, y: y+1});
    						}
    					}
    				}else{
    					if(x <= 4){// 过河前
    						if(this.isEnemyOrEmpty(x+1, y, color)){
    							moveRange.push({x: x+1, y: y});
    						}
    					}else{// 过河后
    						if(this.isEnemyOrEmpty(x+1, y, color)){
    							moveRange.push({x: x+1, y: y});
    						}
    						if(this.isEnemyOrEmpty(x, y-1, color)){
    							moveRange.push({x: x, y: y-1});
    						}
    						if(this.isEnemyOrEmpty(x, y+1, color)){
    							moveRange.push({x: x, y: y+1});
    						}
    					}
    				}
    					
    			break;
    			default: console.warn("兵种(%s)不认识",this.composition[x][y].text);
    		}
    		this.moveRange = moveRange;
    		return moveRange;
    	}
    	
    	// 移动 	1.选择需要移动的棋子  2.点击推荐的可以移动的位置  3.之前的位置赋值为空,结束的位置赋值为当前棋子
    	move(x, y) {
    		this.composition[x][y] = this.toMove.data;
    		this.composition[this.toMove.x][this.toMove.y] = null;
    		console.log("%c%s", "fontsize: 20px; color:"+ this.active +";", this.chessManual(this.toMove.x, this.toMove.y, x, y, this.toMove.data.text, this.toMove.data.color));
    		this.chessSteps.push({
    			step:this.chessManual(this.toMove.x, this.toMove.y, x, y, this.toMove.data.text, this.toMove.data.color),
    			qijv:this.deepClone(this.composition),
    		});
    		//console.log("移动棋子:%o",this.composition[x][y]);
    		this.exchange();
    		this.clearChoose();
    		
    		this.renderUi();
    	}
    	
    	// 清除选中的棋子
    	clearChoose() {
    		delete this.toMove.x;
    		delete this.toMove.y;
    		delete this.toMove.data;
    	}
    	
    	// 生成棋谱  // x增大为进减小为退
    	chessManual(x0, y0, x1, y1, text, color) { // 马 士 象需要特殊处理
    		// console.log(text, color, this.bottomColor);
    		var res = "";
    		var dx = x1 - x0;
    		if(color == this.bottomColor){
    			switch(text) {
    				case "車":
    				case "车":
    				case "炮":
    				case "砲":
    				case "将":
    				case "帅":
    				case "帥":
    				case "兵":
    				case "卒":
    					if (dx < 0) {
    						res = text + this.translateNum(9 - y0) + "进" + this.translateNum(-dx);
    					}else if (dx == 0) {
    						res = text + this.translateNum(9 - y0) + "平" + this.translateNum(9 - y1);
    					}else {
    						res = text + this.translateNum(9 - y0) + "退" + this.translateNum(dx);
    					}
    				break;
    				case "马":
    				case "馬":
    				case "士":
    				case "仕":
    				case "象":
    				case "相":
    					if (dx < 0) {
    						res = text + this.translateNum(9 - y0) + "进" + this.translateNum(9 - y1);
    					}else {
    						res = text + this.translateNum(9 - y0) + "退" + this.translateNum(9 - y1);
    					}
    				break;
    				default: console.warn("棋子%s无法识别",text);
    			}
    		}else{
    			switch(text) {
    				case "車":
    				case "车":
    				case "炮":
    				case "砲":
    				case "将":
    				case "帅":
    				case "帥":
    				case "兵":
    				case "卒":
    					if (dx < 0) {
    						res = text + this.translateNum(y0 + 1) + "退" + this.translateNum(-dx);
    					}else if (dx == 0) {
    						res = text + this.translateNum(y0 + 1) + "平" + this.translateNum(y1 + 1);
    					}else {
    						res = text + this.translateNum(y0 + 1) + "进" + this.translateNum(dx);
    					}
    				break;
    				case "马":
    				case "馬":
    				case "士":
    				case "仕":
    				case "象":
    				case "相":
    					if (dx < 0) {
    						res = text + this.translateNum(y0 + 1) + "退" + this.translateNum(y1 + 1);
    					}else {
    						res = text + this.translateNum(y0 + 1) + "进" + this.translateNum(y1 + 1);
    					}
    				break;
    				default: console.warn("棋子%s无法识别",text);
    			}
    		}
    			
    		return res;
    	}
    	
    	// 将数组转换成汉字
    	translateNum(num) {
    		var res = "";
    		switch(num){
    			case 0: res = "零"; break;
    			case 1: res = "一"; break;
    			case 2: res = "二"; break;
    			case 3: res = "三"; break;
    			case 4: res = "四"; break;
    			case 5: res = "五"; break;
    			case 6: res = "六"; break;
    			case 7: res = "七"; break;
    			case 8: res = "八"; break;
    			case 9: res = "九"; break;
    			default: console.warn("请输入0-9的一个整数");
    		}
    		return res;
    	}
    	
    	// 深度反转数组
    	deepReverse(arr){
    		if(arr instanceof Array) {
    			var copy = this.deepClone(arr);
    			var reverse = copy.reverse();
    			
    			for(var i = 0, len = reverse.length; i < len; i++) {
    				if(reverse[i] instanceof Array){
    					reverse[i] = this.deepReverse(reverse[i]);
    				}
    			}
    			return reverse;
    		}
    		
    		throw new Error("此函数只能反转数组");
    	}
    	
    	// 深拷贝
    	deepClone(values) {
    		var copy;
    	
    		// Handle the 3 simple types, and null or undefined
    		if(null == values || "object" != typeof values) return values;
    	
    		// Handle Date
    		if(values instanceof Date) {
    			copy = new Date();
    			copy.setTime(values.getTime());
    			return copy;
    		}
    	
    		// Handle Array
    		if(values instanceof Array) {
    			copy = [];
    			for(var i = 0, len = values.length; i < len; i++) {
    				copy[i] = this.deepClone(values[i]);
    			}
    			return copy;
    		}
    	
    		// Handle Object
    		if(values instanceof Object) {
    			copy = {};
    			for(var attr in values) {
    				if(values.hasOwnProperty(attr)) copy[attr] = this.deepClone(values[attr]);
    			}
    			return copy;
    		}
    	
    		throw new Error("Unable to copy values! Its type isn't supported.");
    	}
    }
    

      

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  • 原文地址:https://www.cnblogs.com/zhaodesheng/p/9848598.html
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