<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>五子棋</title>
<style type="text/css">
canvas{
display: block;/*此元素将显示为块级元素，此元素前后会带有换行符。*/
margin: 100px auto;/*上间距 左间距*/
box-shadow: -2px -2px 2px #EFEFEF, 5px 5px 5px #B9B9B9;/*上下左右阴影部分*/
}
</style>
</head>
<body>
<canvas id="chess" width="450px" height="450px"></canvas>
<script language="javascript">
var chess=document.getElementById('chess');
var context=chess.getContext('2d');
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;
}
}
var wins = [];
var count = 0;
for(var i = 0; i < 15; i++) {
wins[i] = [];
for (var j = 0; j < 15; j++) {
wins[i][j] = [];
}
}
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++;
}
}
for(var i = 0; i < 15; i++) {
for (var j = 0; j < 11; j++) {
for (var k = 0; k < 5; k++) {
wins[j+k][i][count] = true;
}
count++;
}
}
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++;
}
}
var myWin=[];
var computerWin=[];
var over=false;
for(var i=0;i<count;i++){
myWin[i]=0;
computerWin[i]=0;
}
console.log(count);
context.strokeStyle="#BFBFBF";
var logo=new Image();
logo.src="./king.jpg";
logo.onload=function(){
context.drawImage(logo,0,0,450,450);
drawChessBoard();
oneStep(7,7,false);
}
var drawChessBoard=function(){
for(var i=0; i<15; i++){
context.moveTo(15+i*30,15);
context.lineTo(15+i*30,430);
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+2,15+j*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();
}
chess.onclick=function(e){
if(over){
return;
}
if(!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] = 6;
if (myWin[k] == 5) {
window.alert("你赢了!");
over = true;
}
}
}
if(!over){
me=!me;
computerAI();
}
}
}
var computerAI=function(){
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;k<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]+=2100;
}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] = 6;
if (computerWin[k] == 5) {
window.alert("计算机赢了!");
over = true;
}
}
}
if(!over){
me=!me;
}
}
</script>
</body>
</html>
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