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{width: 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>

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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.");
    }
}