原生JS+Canvas实现五子棋游戏
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2022-11-25 09:14:37
本文实例为大家分享了js canvas实现五子棋游戏的具体代码，供大家参考，具体内容如下
<...
本文实例为大家分享了js canvas实现五子棋游戏的具体代码，供大家参考，具体内容如下
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<title>五子棋</title>
<style type='text/css'>
canvas {
display: block;
margin: 50px auto;
box-shadow: -2px -2px 2px #efefef, 5px 5px 5px #b9b9b9;
cursor: pointer;
}
.btn-wrap {
display: flex;
flex-direction: row;
justify-content:center;
}
.btn-wrap div {
margin: 0 10px;
}
div>span {
display: inline-block;
padding: 10px 20px;
color: #fff;
background-color: #ee82ee;
border-radius: 5px;
cursor: pointer;
}
div.unable span {
background: #d6d6d4;
color: #adacaa;
}
#result-wrap {text-align: center;}
</style>
</head>
<body>
<h3 id="result-wrap">--益智五子棋--</h3>
<canvas id="chess" width="450px" height="450px"></canvas>
<div class="btn-wrap">
<div id='restart' class="restart">
<span>重新开始</span>
</div>
<div id='goback' class="goback unable">
<span>悔棋</span>
</div>
<div id='return' class="return unable">
<span>撤销悔棋</span>
</div>
</div>
<script type="text/javascript" charset="utf-8">
var over = false;
var me = true; //我
var _nowi = 0, _nowj = 0; //记录自己下棋的坐标
var _compi = 0, _compj = 0; //记录计算机当前下棋的坐标
var _mywin = [], _compwin = []; //记录我，计算机赢的情况
var backable = false, returnable = false;
var resulttxt = document.getelementbyid('result-wrap');
var chressbord = [];//棋盘
for(var i = 0; i < 15; i++){
chressbord[i] = [];
for(var j = 0; j < 15; j++){
chressbord[i][j] = 0;
}
}
//赢法的统计数组
var mywin = [];
var computerwin = [];
//赢法数组
var wins = [];
for(var i = 0; i < 15; i++){
wins[i] = [];
for(var j = 0; j < 15; j++){
wins[i][j] = [];
}
}
var count = 0; //赢法总数
//横线赢法
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++;
}
}
//竖线赢法
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++;
}
}
//正斜线赢法
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++;
}
}
//反斜线赢法
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++;
}
}
// debugger;
for(var i = 0; i < count; i++){
mywin[i] = 0;
_mywin[i] = 0;
computerwin[i] = 0;
_compwin[i] = 0;
}
var chess = document.getelementbyid("chess");
var context = chess.getcontext('2d');
context.strokestyle = '#bfbfbf'; //边框颜色
var backbtn = document.getelementbyid("goback");
var returnbtn = document.getelementbyid("return");
window.onload = function(){
drawchessboard(); // 画棋盘
}
document.getelementbyid("restart").onclick = function(){
window.location.reload();
}
// 我，下棋
chess.onclick = function(e){
if(over){
return;
}
if(!me){
return;
}
// 悔棋功能可用
backbtn.classname = backbtn.classname.replace( new regexp( "(\\s|^)unable(\\s|$)" )," " );
var x = e.offsetx;
var y = e.offsety;
var i = math.floor(x / 30);
var j = math.floor(y / 30);
_nowi = i;
_nowj = j;
if(chressbord[i][j] == 0){
onestep(i,j,me);
chressbord[i][j] = 1; //我，已占位置
for(var k = 0; k < count; k++){ // 将可能赢的情况都加1
if(wins[i][j][k]){
// debugger;
mywin[k]++;
_compwin[k] = computerwin[k];
computerwin[k] = 6;//这个位置对方不可能赢了
if(mywin[k] == 5){
// window.alert('你赢了');
resulttxt.innerhtml = '恭喜，你赢了！';
over = true;
}
}
}
if(!over){
me = !me;
computerai();
}
}
}
// 悔棋
backbtn.onclick = function(e){
if(!backable) { return;}
over = false;
me = true;
// resulttxt.innerhtml = 'o(╯□╰)o，悔棋中';
// 撤销悔棋功能可用
returnbtn.classname = returnbtn.classname.replace( new regexp( "(\\s|^)unable(\\s|$)" )," " );
// 我，悔棋
chressbord[_nowi][_nowj] = 0; //我，已占位置 还原
minusstep(_nowi, _nowj); //销毁棋子
for(var k = 0; k < count; k++){ // 将可能赢的情况都减1
if(wins[_nowi][_nowj][k]){
mywin[k]--;
computerwin[k] = _compwin[k];//这个位置对方可能赢
}
}
// 计算机相应的悔棋
chressbord[_compi][_compj] = 0; //计算机，已占位置 还原
minusstep(_compi, _compj); //销毁棋子
for(var k = 0; k < count; k++){ // 将可能赢的情况都减1
if(wins[_compi][_compj][k]){
computerwin[k]--;
mywin[k] = _mywin[i];//这个位置对方可能赢
}
}
resulttxt.innerhtml = '--益智五子棋--';
returnable = true;
backable = false;
}
// 撤销悔棋
returnbtn.onclick = function(e){
if(!returnable) { return; }
// 我，撤销悔棋
chressbord[_nowi][_nowj] = 1; //我，已占位置
onestep(_nowi,_nowj,me);
for(var k = 0; k < count; k++){
if(wins[_nowi][_nowj][k]){
mywin[k]++;
_compwin[k] = computerwin[k];
computerwin[k] = 6;//这个位置对方不可能赢
}
if(mywin[k] == 5){
resulttxt.innerhtml = '恭喜，你赢了！';
over = true;
}
}
// 计算机撤销相应的悔棋
chressbord[_compi][_compj] = 2; //计算机，已占位置
onestep(_compi,_compj,false);
for(var k = 0; k < count; k++){ // 将可能赢的情况都减1
if(wins[_compi][_compj][k]){
computerwin[k]++;
_mywin[k] = mywin[k];
mywin[k] = 6;//这个位置对方不可能赢
}
if(computerwin[k] == 5){
resulttxt.innerhtml = 'o(╯□╰)o，计算机赢了，继续加油哦！';
over = true;
}
}
returnbtn.classname += ' '+ 'unable';
returnable = false;
backable = true;
}
// 计算机下棋
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(chressbord[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;
}
}
}
}
}
_compi = u;
_compj = v;
onestep(u,v,false);
chressbord[u][v] = 2; //计算机占据位置
for(var k = 0; k < count; k++){
if(wins[u][v][k]){
computerwin[k]++;
_mywin[k] = mywin[k];
mywin[k] = 6;//这个位置对方不可能赢了
if(computerwin[k] == 5){
resulttxt.innerhtml = 'o(╯□╰)o，计算机赢了，继续加油哦！';
over = true;
}
}
}
if(!over){
me = !me;
}
backable = true;
returnable = false;
var hasclass = new regexp('unable').test(' ' + returnbtn.classname + ' ');
if(!hasclass) {
returnbtn.classname += ' ' + 'unable';
}
}
//绘画棋盘
var drawchessboard = function() {
for(var i = 0; i < 15; i++){
context.moveto(15 + i * 30 , 15);
context.lineto(15 + i * 30 , 435);
context.stroke();
context.moveto(15 , 15 + i * 30);
context.lineto(435 , 15 + i * 30);
context.stroke();
}
}
//画棋子
var onestep = function(i,j,me) {
context.beginpath();
context.arc(15 + i * 30, 15 + j * 30, 13, 0, 2 * math.pi);// 画圆
context.closepath();
//渐变
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();
}
//销毁棋子
var minusstep = function(i,j) {
//擦除该圆
context.clearrect((i) * 30, (j) * 30, 30, 30);
// 重画该圆周围的格子
context.beginpath();
context.moveto(15+i*30 , j*30);
context.lineto(15+i*30 , j*30 + 30);
context.moveto(i*30, j*30+15);
context.lineto((i+1)*30 , j*30+15);
context.stroke();
}
</script>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。