html5--笑傲弈林

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结合笔者发过的html5 贪食蛇和中国象棋程序，整合成了一个基于 html5 的象棋打谱程序，该打谱程序暂时还没有什么亮点，只是有别于东萍的打谱程序，它是用 flash 开发的，本程序则不用依赖 falsh, 但却依赖浏览器 ... （万恶的 IE ）。技术上也没有什么可圈可点，无非还是在用 canvas API 画画图。在此抛砖引玉，期待更多 html5 的精彩应用。

 

本程序支持以下棋谱格式，比较简陋

每个棋步由四个字符组成： 棋子纵坐标 +  棋子横坐标  +  目的点纵坐标  + 　目的点横坐标

试下功能没有进行行棋规则的限制，如对此有兴趣，可参考笔者中国象棋程序的实现。

试下后可保存棋谱，保存格式同上，棋谱保存后可用于演示。

 

本程序未来有可能考虑以下扩展

1. 象棋行棋术语显示与定位

2. 多种棋谱格式支持

3. 联网下棋

4. 象棋比赛直播

但也不一定，要看时间，心情与兴趣，毕竟这年头，计划赶不上变化。同好棋友，也可自行扩展，你推倒重来更好。本程序用yangguo licence 进行发布。

Yangguo licence: 任何人有权使用本程序。如要修改源代码，建议通知作者，并提交修改后代码。美女将获得无偿培训，指导。

 

 

 

闲话休提，来看截图：

 

 

 

录入棋谱：

 

 

 

Board类代码

 

function Board(pen){
	this.board = [];
	this.init = function(){
		this.board = new Array(
		[8,9,10,11,12,11,10,9,8],
		[0,0,0,0,0,0,0,0,0],
		[0,13,0,0,0,0,0,13,0],
		[14,0,14,0,14,0,14,0,14],
		[0,0,0,0,0,0,0,0,0],
		[0,0,0,0,0,0,0,0,0],
		[7,0,7,0,7,0,7,0,7],
		[0,6,0,0,0,0,0,6,0],
		[0,0,0,0,0,0,0,0,0],
		[1,2,3,4,5,4,3,2,1]
		);
		
	}
	this.init();
	this.step = [];
	this.memory = [];
	this.cur = 0;
	this.choosed = false;
	this.chooseX = 0;
	this.chooseY = 0;
	this.id = -1;
	this.cxt = pen;

	var padder = 50;
	var dis = 50;
	var chessSize = 23;
	var statLength = dis/4;
	var statDis = dis/7;
	var range = chessSize;
	var WIDTH = 8*dis;
	var HEIGHT = 9*dis;
	
	var letter = "ABCDEFGHIJKLMN";
	
	var chessChar = ["","车","马","相","士","帅","炮","兵","车","马","象","士","将","炮","卒"];

	this.clearAll = function(){
		this.cxt.clearRect(0,0,WIDTH + padder + dis,HEIGHT + padder + dis);
	}
	this.drawBoard = function(){
		this.cxt.fillStyle = "#FDF5E6";
		this.cxt.fillRect(padder - 8,padder - 8,WIDTH +  16,HEIGHT +  16);
		this.cxt.moveTo(padder,padder);
		this.cxt.strokeStyle = "black";
		for(i=0;i<10;i++){
			this.cxt.moveTo(padder,padder + i*dis);
			this.cxt.lineTo(WIDTH + padder,padder + i*dis);
		}
		this.cxt.moveTo(padder,padder);
		this.cxt.lineTo(padder,HEIGHT + padder);
		this.cxt.moveTo(padder + WIDTH,padder);
		this.cxt.lineTo(padder + WIDTH,HEIGHT + padder);
		for(i=1;i<8;i++){
			this.cxt.moveTo(padder + i*dis,padder);
			this.cxt.lineTo(padder + i*dis,4*dis + padder);
			this.cxt.moveTo(padder + i*dis,HEIGHT + padder);
			this.cxt.lineTo(padder + i*dis,5*dis + padder);

		}
		this.cxt.moveTo(padder + 3*dis,padder);
		this.cxt.lineTo(padder + 5*dis,2*dis + padder);

		this.cxt.moveTo(padder + 5*dis,padder);
		this.cxt.lineTo(padder + 3*dis,2*dis + padder);

		this.cxt.moveTo(padder + 3*dis,padder + HEIGHT);
		this.cxt.lineTo(padder + 5*dis,7*dis + padder);

		this.cxt.moveTo(padder + 5*dis,padder + HEIGHT);
		this.cxt.lineTo(padder + 3*dis,7*dis + padder);

		drawStat(this.cxt,padder + dis,padder + 2*dis);
		drawStat(this.cxt,padder + 7*dis,padder + 2*dis);
		drawStat(this.cxt,padder + dis,padder + 7*dis);
		drawStat(this.cxt,padder + 7*dis,padder + 7*dis);

		for(i=3;i<9;i=i+3){
			for(j=0;j<9;j=j+2){
				if(j == 0 )
				drawRight(this.cxt,padder + j*dis,padder + i*dis);
				else if(j == 8)
				drawLeft(this.cxt,padder + j*dis,padder + i*dis);
				else
				drawStat(this.cxt,padder + j*dis,padder + i*dis);
			}
		}
		this.cxt.rect(padder - 8,padder - 8,WIDTH +  16,HEIGHT +  16);		
		this.cxt.stroke();
				
		this.cxt.font = "15px 宋体";
		for(i=1;i<=9;i++){
			this.cxt.strokeText(i,padder + (i-1)*dis,padder + HEIGHT +  40);			
		}
		for(i=0;i<=9;i++){
			this.cxt.strokeText(letter[i],8,padder + i*dis);
		}
	}
	this.draw = function(){
		this.clearAll();
		this.drawBoard();
		
		for(i=0;i<10;i++){
			for(j=0;j<9;j++){
				if(this.board[i][j] != 0){
					//alert(chessChar[2]);
					if(this.board[i][j] <= 7)
						drawChess(this.cxt,chessChar[this.board[i][j]],j*dis + padder,i*dis + padder,"red");
					else
						drawChess(this.cxt,chessChar[this.board[i][j]],j*dis + padder,i*dis + padder,"black");
			
				}
			}
		}		
	}
	this.startTryPlay = function(){
		this.memory = this.step;
		this.memory.length = this.cur;		
	}
	this.endTryPlay = function(){
		this.react();
		this.draw();
		var code = this.memory.join(" ");
		return code;		
	}
	this.stopAutoPlay = function(){
		clearInterval(this.id);
	}
	this.move = function(sx,sy,ex,ey){	
		this.board[ex][ey] = this.board[sx][sy];
		this.board[sx][sy] = 0;
	}
	this.changeBook = function(step){
		this.step = step;
		this.cur = 0;
		this.init();
		this.draw();
	}
	this.next = function(){
		if(this.cur < this.step.length){
			var num = this.step[this.cur++];
			this.move(num.charCodeAt(0) - 65,num[1] - 1,num.charCodeAt(2) - 65,num[3] - 1);
		}
		else{
			if(this.id != -1){
				clearInterval(this.id);
				alert("演示结束");
				this.id = -1;
			}
		}
	}
	this.prev = function(){
		if(this.cur > 0){			
			this.cur--;
			this.react();			
		}		
	}
	this.react = function(){
		this.init();
		for(i=0;i=(dis - range)){
			if(y<=range || y>=(dis-range)){
				if(x<=range)
				 px = e.pageX - x;
				else 
				 px = e.pageX - x + dis;
				if(y<=range)
				 py = e.pageY - y;
				else 
				 py = e.pageY - y + dis;
				 
				var i = (px - padder)/dis;
				var j = (py - padder)/dis;

				if(!this.choosed){				
					if(this.board[j][i] != 0){
						this.choosed = true;
						this.chooseX = i;
						this.chooseY = j;
						drawBorder(this.cxt,px,py);
					} 
				}
				else{
					if(i == this.chooseX && j == this.chooseY)
						return;					
					this.move(this.chooseY,this.chooseX,j,i);
					var code = String.fromCharCode(65 + this.chooseY,this.chooseX + 49,65 + j,i+49);
					this.memory.push(code);
					this.draw();	
					this.choosed = false;
				}
			}
		}		
	}
	
	function drawBorder(cxt,x,y){
		//cxt.beginPath(); 
		cxt.strokeStyle = "blue";
		cxt.strokeRect(x-chessSize,y-chessSize,2*chessSize,2*chessSize);
	}
	function drawChess(cxt,chess,x,y,color){
		cxt.beginPath();
		drawCircle(cxt,x,y,chessSize);
		cxt.fillStyle="#FFDAB9";	
		cxt.fill();
		cxt.beginPath();
		drawCircle(cxt,x,y - 1,chessSize - 1);
		cxt.strokeStyle = "white";
		cxt.stroke();
		cxt.beginPath();
		cxt.font = "30px 宋体";
		cxt.textAlign = 'center';  
		cxt.strokeStyle = color;
		cxt.strokeText(chess,x,y + 10);		
	}

	function drawCircle(cxt,x,y,radius){
		cxt.arc(x,y,radius,0,2*Math.PI,false);
	}

	function drawStat(cxt,x,y){		
		drawLeft(cxt,x,y);
		drawRight(cxt,x,y);		
	}
	function drawLeft(cxt,x,y){
		cxt.moveTo(x - statDis,y - statDis);
		cxt.lineTo(x-statDis,y - statDis - statLength);
		cxt.moveTo(x-statDis,y-statDis);
		cxt.lineTo(x-statDis - statLength,y - statDis);
		cxt.moveTo(x-statDis,y+statDis);
		cxt.lineTo(x-statDis,y + statDis + statLength);
		cxt.moveTo(x-statDis,y+statDis);
		cxt.lineTo(x-statDis - statLength,y + statDis);
	}
	function drawRight(cxt,x,y){
		cxt.moveTo(x+statDis,y-statDis);
		cxt.lineTo(x+statDis,y - statDis - statLength);
		cxt.moveTo(x+statDis,y-statDis);
		cxt.lineTo(x+statDis + statLength,y - statDis );
		cxt.moveTo(x+statDis,y+statDis);
		cxt.lineTo(x+statDis,y + statDis + statLength);
		cxt.moveTo(x+statDis,y+statDis);
		cxt.lineTo(x+statDis + statLength,y + statDis );
	}
}

 

附件可下载可执行网页，试玩一下吧。

 

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