var chessBoard =[];
for(var i = 0;i<15;i++){
chessBoard[i] = [];
for(var j = 0;j<15;j++){
chessBoard[i][j] = 0;
}
}
var me = true;
var myWin = [];
var computerWin = [];
var over = false;
var chess = document.getElementById('chess');
var context = chess.getContext('2d');//获取画笔
context.strokeStyle ="#bfbfbf";//画笔颜色设置
var logo = new Image();
logo.src="images/logo.png";
logo.onload = function(){
context.drawImage(logo,0,0,450,450);
drawChessBoard();
}
var drawChessBoard =function(){
for (var i = 0; i <= 15; i++) {
context.moveTo(15+i*30,15);
context.lineTo(15+i*30,435);//画竖线
context.stroke();
context.moveTo(15,15+i*30);
context.lineTo(435,15+i*30);
context.stroke();
}
}
var oneStep = function(i,j,me){
context.beginPath();
context.arc(15 +i * 30,15 +j * 30,13,0,2 * Math.PI);
context.closePath();
var gradient = context.createRadialGradient(15+i*30+2,15+j*30-2,13,15+i*30+2,j*30-2,0);
if(me){
gradient.addColorStop(0,"#0A0A0A");
gradient.addColorStop(1,"#636376");
}else{
gradient.addColorStop(0,"#D1D1D1");
gradient.addColorStop(1,"#F9F9F9");
}
context.fillStyle=gradient;
context.fill();
}
chess.onclick = function(e){
if (over) {return;}
if(!me){ console.log(!me);return;}
var x =e.offsetX;
var y =e.offsetY;
var i = Math.floor(x/30);
var j = Math.floor(y/30);
if(chessBoard[i][j]==0){
oneStep(i,j,me);
chessBoard[i][j]=1;
for (var k = 0; k < count; k++) {
if(wins[i][j][k]){
myWin[k]++;
computerWin[k]=100;//表明这不可能赢
if(myWin[k] == 5){
alert("you win");
console.log("you win");
over = true;
console.log(k)
}
}
}
if(!over){
me =!me;
console.log(me);
computerAI();
}
}
}
//赢法数组
//1:定义一个空的三维数组
var wins = [];
for (var i = 0; i < 15; i++) {
wins[i] = [];
for (var j = 0; j < 15; j++) {
wins[i][j] = [];
}
}
var count = 0;
//所有横向赢法统计
for (var i = 0; i < 15; i++) {
for (var j = 0; j < 11; j++) {
for (var k = 0; k < 5; k++) {
wins[i][j+k][count] =true;
}
count++;
}
}
//所有竖线的赢法统计
for (var i = 0; i < 11; i++) {
for (var j = 0; j < 15 ; j++) {
for (var k = 0; k <5 ; k++) {
wins[i+k][j][count] = true;
}
count++;
}
}
//所有斜线赢法统计
for (var i = 0; i < 11; i++) {
for (var j = 0; j < 11; j++) {
for (var k = 0; k < 5; k++) {
wins[i+k][j+k][count] = true;
}
count++;
}
}
for (var i = 0; i < 11; i++) {
for (var j = 14; j > 3; j--) {
for (var k = 0; k < 5; k++) {
wins[i+k][j-k][count] = true;
}
count++;
}
}
for (var i = 0; i < count; i++) {
myWin[i] = 0;
computerWin[i] = 0;
}
var computerAI = function(){
console.log("电脑下棋中 ......");
var myScore = [];
var computerScore = [];
var max = 0;
var u =0,v= 0;
for (var i = 0; i < 15; i++) {
myScore[i] = [];
computerScore[i] =[];
for (var j = 0; j < 15; j++) {
myScore[i][j] = 0;
computerScore[i][j] = 0;
}
}
for (var i = 0; i < 15; i++) {
for (var j = 0; j < 15; j++) {
if (chessBoard[i][j]==0) {
for (var k = 0; i < count; k++) {
if (wins[i][j][k]) {
if(myWin[k] == 1){
myScore[i][j] += 200;
}else if(myWin[k]==2){
myScore[i][j] += 400;
}else if(myWin[k]==3){
myScore[i][j] += 2000;
}else if(myWin[k]==4){
myScore[i][j] += 10000;
}
if(computerWin[k] == 1){
computerScore[i][j] += 220;
}else if(computerWin[k]==2){
computerScore[i][j] += 420;
}else if(computerWin[k]==3){
computerScore[i][j] += 2400;
}else if(computerWin[k]==4){
computerScore[i][j] += 20000;
}
}
}
if (myScore[i][j]>max) {
max =myScore[i][j];
u = i;
v = j;
}else if(myScore[i][j] == max){
if(computerScore[i][j]>computerScore[u][v]){
u = i;
v = j;
}
}
if (computerScore[i][j]>max) {
max =computerScore[i][j];
u = i;
v = j;
}else if(computerScore[i][j] == max){
if(myScore[i][j]>myScore[u][v]){
u = i;
v = j;
}
}
}
}
}
oneStep(u,v,false);
chessBoard[u][v] = 2;
for (var k = 0; k < count; k++) {
if(wins[u][v][k]){
computerWin[k]++;
myWin[k]=100;//表明这不可能赢
if(computerWin[k] == 5){
alert("computer win");
console.log("computer win");
over = true;
console.log(k)
}
}
}
if(!over){
me =!me;
}
}