var me = true;
var chessBoard = [];
for(var i= 0;i<15;i++){
chessBoard[i] = [];
for(var j = 0;j<15;j++){
chessBoard[i][j] = 0;
}
}
//划线
var chess = document.getElementById('chess');
var context = chess.getContext('2d');
context.strokeStyle = "#bbb";//棋盘线的颜色
function drawChessBoard(){
for(var i = 0; i<15;i++){
// //棋盘横线
context.moveTo(15+i*30,15);
context.lineTo(15 + i*30, 435);
context.stroke();
//棋盘竖线
context.moveTo(15,15+i*30);
context.lineTo(435, 15 + i*30);
context.stroke();
}}
//水印
var logo = new Image();
logo.src = "img/logo.png";
logo.onload = function(){
context.drawImage(logo,0,0,450,450);
drawChessBoard();
}
//棋子 i j 是棋子的坐标 me判断是黑棋白棋
function oneStep(i,j,me){
context.beginPath();//开始路径
context.arc(15+i*30,15+j*30,13,0,2*Math.PI);//圆的基本信息
context.closePath();//结束路径
var gradient = context.createRadialGradient(15+i*30+2,15+i*30-2,13,15+i*30+2,15+i*30-2,0);
if(me){
gradient.addColorStop(0,"#0a0a0a");
gradient.addColorStop(1,"#636766");
}else{
gradient.addColorStop(0,"#d1d1d1");
gradient.addColorStop(1,"#f9f9f9");
}
context.fillStyle = gradient;
context.fill();//填充颜色
}
//下棋子
chess.onclick = function(e){
var x = e.offsetX;
var y = e.offsetY;
var i = Math.floor(x/30);//求棋子的坐标
var j = Math.floor(y/30);
if(chessBoard[i][j] ==0){
oneStep(i,j,me);
if(me){
chessBoard[i][j] = 1;
}else{
chessBoard[i][j] = 2;
}
me != me;
}
}