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JS+canvas實(shí)現(xiàn)的五子棋游戲【人機(jī)大戰(zhàn)版】

更新時(shí)間：2017年07月19日 11:21:05 作者：雨中的魚

這篇文章主要介紹了JS+canvas實(shí)現(xiàn)的五子棋游戲,是采用比較強(qiáng)的AI實(shí)現(xiàn)的人機(jī)大戰(zhàn)版游戲,涉及javascript結(jié)合HTML5實(shí)現(xiàn)圖形繪制與人工智能相關(guān)操作技巧,需要的朋友可以參考下

本文實(shí)例講述了JS+canvas實(shí)現(xiàn)的五子棋游戲。分享給大家供大家參考，具體如下：

運(yùn)行效果圖：

html代碼如下：

<!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>重新開始</span>
    </div>
    <script src="js/script.js" type="text/javascript" charset="utf-8"></script>
  </body>
</html>

style.css代碼如下：

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代碼如下：

var over = false;
var me = true; //我
var chressBord = [];//棋盤
for(var i = 0; i < 15; i++){
  chressBord[i] = [];
  for(var j = 0; j < 15; j++){
    chressBord[i][j] = 0;
  }
}
//贏法的統(tǒng)計(jì)數(shù)組
var myWin = [];
var computerWin = [];
//贏法數(shù)組
var wins = [];
for(var i = 0; i < 15; i++){
  wins[i] = [];
  for(var j = 0; j < 15; j++){
    wins[i][j] = [];
  }
}
var count = 0; //贏法總數(shù)
//橫線贏法
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++;
  }
}
//豎線贏法
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++;
  }
}
//正斜線贏法
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++;
  }
}
//反斜線贏法
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;
  computerWin[i] = 0;
}
var chess = document.getElementById("chess");
var context = chess.getContext('2d');
context.strokeStyle = '#bfbfbf'; //邊框顏色
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]++;
        computerWin[k] = 6;//這個(gè)位置對(duì)方不可能贏了
        if(myWin[k] == 5){
          window.alert('你贏了');
          over = true;
        }
      }
    }
    if(!over){
      me = !me;
      computerAI();
    }
  }
}
//計(jì)算機(jī)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;
          }
        }
      }
    }
  }
  oneStep(u,v,false);
  chressBord[u][v] = 2;
  for(var k = 0; k < count; k++){
    if(wins[u][v][k]){
      computerWin[k]++;
      myWin[k] = 6;//這個(gè)位置對(duì)方不可能贏了
      if(computerWin[k] == 5){
        window.alert('計(jì)算機(jī)贏了');
        over = true;
      }
    }
  }
  if(!over){
    me = !me;
  }
}
//繪畫棋盤
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();
  }
}
//畫旗子
var oneStep = function(i,j,me){
  context.beginPath();
  context.arc(15 + i * 30, 15 + j * 30, 13, 0, 2 * Math.PI);//畫圓
  context.closePath();
  //漸變
  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();
}

PS：這里再為大家推薦另一款本站的js版五子棋游戲供大家參考（其AI相對(duì)簡(jiǎn)單一些）

在線五子棋游戲：
http://tools.jb51.net/games/wuziqi

更多關(guān)于JavaScript相關(guān)內(nèi)容感興趣的讀者可查看本站專題：《JavaScript數(shù)據(jù)結(jié)構(gòu)與算法技巧總結(jié)》、《JavaScript數(shù)學(xué)運(yùn)算用法總結(jié)》、《JavaScript切換特效與技巧總結(jié)》、《JavaScript查找算法技巧總結(jié)》、《JavaScript動(dòng)畫特效與技巧匯總》、《JavaScript錯(cuò)誤與調(diào)試技巧總結(jié)》及《JavaScript遍歷算法與技巧總結(jié)》

希望本文所述對(duì)大家JavaScript程序設(shè)計(jì)有所幫助。

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