Home > Web Front-end > JS Tutorial > body text

Native JS+Canvas code to implement backgammon game

不言
Release: 2018-07-03 09:45:58
Original
1635 people have browsed it

这篇文章主要为大家详细介绍了原生JS+Canvas实现五子棋游戏,具有一定的参考价值,感兴趣的小伙伴们可以参考一下

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=&#39;text/css&#39;> 
      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 p {  
        margin: 0 10px; 
      } 
      p>span { 
        display: inline-block; 
        padding: 10px 20px; 
        color: #fff; 
        background-color: #EE82EE; 
        border-radius: 5px; 
        cursor: pointer; 
      } 
      p.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> 
    <p class="btn-wrap"> 
      <p id=&#39;restart&#39; class="restart"> 
        <span>重新开始</span> 
      </p> 
      <p id=&#39;goback&#39; class="goback unable"> 
        <span>悔棋</span> 
      </p> 
      <p id=&#39;return&#39; class="return unable"> 
        <span>撤销悔棋</span> 
      </p> 
    </p> 
    <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(&#39;result-wrap&#39;); 
      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(&#39;2d&#39;); 
      context.strokeStyle = &#39;#bfbfbf&#39;; //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(&#39;你赢了&#39;); 
                resultTxt.innerHTML = &#39;恭喜,你赢了!&#39;; 
                over = true; 
              } 
            } 
          } 
          if(!over){ 
            me = !me; 
            computerAI(); 
          } 
        }      
      } 
      // 悔棋 
      backbtn.onclick = function(e){ 
        if(!backAble) { return;} 
        over = false; 
        me = true; 
        // resultTxt.innerHTML = &#39;o(╯□╰)o,悔棋中&#39;; 
        // 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 = &#39;--益智五子棋--&#39;; 
        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 = &#39;恭喜,你赢了!&#39;; 
            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 = &#39;o(╯□╰)o,计算机赢了,继续加油哦!&#39;; 
            over = true; 
          } 
        } 
        returnbtn.className += &#39; &#39;+ &#39;unable&#39;; 
        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 = &#39;o(╯□╰)o,计算机赢了,继续加油哦!&#39;; 
              over = true; 
            } 
          } 
        } 
        if(!over){ 
          me = !me; 
        } 
        backAble = true; 
        returnAble = false; 
        var hasClass = new RegExp(&#39;unable&#39;).test(&#39; &#39; + returnbtn.className + &#39; &#39;); 
        if(!hasClass) { 
          returnbtn.className += &#39; &#39; + &#39;unable&#39;; 
        } 
      } 
      //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,&#39;#0a0a0a&#39;); 
          gradient.addColorStop(1,&#39;#636766&#39;); 
        }else{ 
          gradient.addColorStop(0,&#39;#d1d1d1&#39;); 
          gradient.addColorStop(1,&#39;#f9f9f9&#39;); 
        } 
        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>
Copy after login

以上就是本文的全部内容,希望对大家的学习有所帮助,更多相关内容请关注PHP中文网!

相关推荐:

关于原生js实现类似fullpage的单页/全屏滚动的方法

如何利用JS实现仿微信支付弹窗功能

The above is the detailed content of Native JS+Canvas code to implement backgammon game. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!