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JS+canvas实现的五子棋游戏【人机大战版】

网络编程 2021-07-04 18:32www.168986.cn编程入门
这篇文章主要介绍了JS+canvas实现的五子棋游戏,是采用比较强的AI实现的人机大战版游戏,涉及javascript结合HTML5实现图形绘制与人工智能相关操作技巧,需要的朋友可以参考下

本文实例讲述了JS+canvas实现的五子棋游戏。分享给大家供大家参考，具体如下

运行效果图

html代码如下

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title>五子棋</title>
    <link rel="stylesheet" type="text/css" href="css/style.css" rel="external nofollow" />
  </head>
  <body>
    <canvas id="chess" width="450px" height="450px"></canvas>
    <div id='restart' class="restart">
      <span>重新开始</span>
    </div>
    <script src="js/script.js" type="text/javascript" charset="utf-8"></script>
  </body>
</html>

style.css代码如下

canvas{
  display: block;
  margin: 50px auto;
  box-shadow: -2px -2px 2px #efefef, 5px 5px 5px #b9b9b9;
}
.restart{
  text-align: center;
}
.restart>span{
  display: inline-block;
  padding: 10px 20px;
  color: #fff;
  background-color: #45c01a;
  border-radius: 5px;
}

script.js代码如下

var over = false;
var me = true; //我
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 puterWin = [];
//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++;
  }
}
for(var i = 0; i < count; i++){
  myWin[i] = 0;
  puterWin[i] = 0;
}
var chess = document.getElementById("chess");
var context = chess.getContext('2d');
context.strokeStyle = '#bfbfbf'; //边框颜色
var logo = new Image();
logo.src = 'img/logo.png';
logo.onload = function(){
  context.drawImage(logo,0,0,450,450);
  drawChessBoard();
}
document.getElementById("restart").onclick = function(){
  window.location.reload();
}
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(chressBord[i][j] == 0){
    oneStep(i,j,me);
    chressBord[i][j] = 1;//我
    for(var k = 0; k < count; k++){
      if(wins[i][j][k]){
        myWin[k]++;
        puterWin[k] = 6;//这个位置对方不可能赢了
        if(myWin[k] == 5){
          window.alert('你赢了');
          over = true;
        }
      }
    }
    if(!over){
      me = !me;
      puterAI();
    }
  }
}
//计算机下棋
var puterAI = function (){
  var myScore = [];
  var puterScore = [];
  var max = 0;
  var u = 0, v = 0;
  for(var i = 0; i < 15; i++){
    myScore[i] = [];
    puterScore[i] = [];
    for(var j = 0; j < 15; j++){
      myScore[i][j] = 0;
      puterScore[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(puterWin[k] == 1){
              puterScore[i][j] += 220;
            }else if(puterWin[k] == 2){
              puterScore[i][j] += 420;
            }else if(puterWin[k] == 3){
              puterScore[i][j] += 2100;
            }else if(puterWin[k] == 4){
              puterScore[i][j] += 20000;
            }
          }
        }
        if(myScore[i][j] > max){
          max = myScore[i][j];
          u = i;
          v = j;
        }else if(myScore[i][j] == max){
          if(puterScore[i][j] > puterScore[u][v]){
            u = i;
            v = j;
          }
        }
        if(puterScore[i][j] > max){
          max = puterScore[i][j];
          u = i;
          v = j;
        }else if(puterScore[i][j] == max){
          if(myScore[i][j] > myScore[u][v]){
            u = i;
            v = j;
          }
        }
      }
    }
  }
  oneStep(u,v,false);
  chressBord[u][v] = 2;
  for(var k = 0; k < count; k++){
    if(wins[u][v][k]){
      puterWin[k]++;
      myWin[k] = 6;//这个位置对方不可能赢了
      if(puterWin[k] == 5){
        window.alert('计算机赢了');
        over = true;
      }
    }
  }
  if(!over){
    me = !me;
  }
}
//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();
  }
}
//画旗子
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.addColorS(0,'#0a0a0a');
    gradient.addColorS(1,'#636766');
  }else{
    gradient.addColorS(0,'#d1d1d1');
    gradient.addColorS(1,'#f9f9f9');
  }
  context.fillStyle = gradient;
  context.fill();
}

PS这里再为大家推荐另一款本站的js版五子棋游戏供大家参考（其AI相对简单一些）

在线五子棋游戏

更多关于JavaScript相关内容感兴趣的读者可查看本站专题《》、《》、《》、《》、《》、《》及《》

希望本文所述对大家JavaScript程序设计有所帮助。

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