原生javascript实现连连看游戏

本文实例为大家分享了js实现连连看游戏的具体代码，供大家参考，具体内容如下

<!DOCTYPE html>
<html>
<head>
<title>连连看</title>
<meta charset="gbk">
<style type="text/css">
 body {
  text-align: center;
 }
 .text {text-align: center; margin-top: 60px; color: #fff;}
 .agin {text-align: center; margin-top: 60px; color: #fff;}

 #game-box {
   margin: 60px auto;
   position: relative;
 }

 #game-box img {
  float: left;
  width: 59px;
  height: 59px;
  border: 1px solid #000000;
 }

 #game-box img.hover {
   border: 1px solid #ffffff;
 }

 #game-box img.active {
   border: 1px solid #7fff00;
 }
 #game-box div {
  background-color: #7fff00;
  position: absolute;
 }
</style>
<script type="text/javascript">
  var byId = function (id) {
   return document.getElementById(id);
  }
  var boxWidth = 61; //格子宽度
  var gameBox;
  var mapid = 'game-box';//地图 id
  //22张图片
  var arr = '1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22'.split(',');
  var h = 8; //图片共8行
  var w = 11; //图片共11列
  var boxsLength = h*w;
  var boxArr = {};  //map对象
  var startBox = ''; //开始的格子
  var endBox = '';  //结束的格子
  window.onload = init;

  //初始化
  function init() {
   byId('agin').style.display = 'none';//隐藏再来一把按钮
   boxsLength = h*w;//图片方框的个数
   boxArr = {};
   startBox = '';
   endBox = '';
   var str = '';
   gameBox = byId(mapid);
   for (var i = 0; i < h; i++) {
    for (var j = 0; j < w; j++) {
     str += '<img class="" onclick="choose(this);" id="t' + i + '_l'
       + j + '" src="img/blank.gif">'
     // alert(str);
    }//id="t0_l0,t0_l1,t0_l2,t0_l3..."
   }
   gameBox.innerHTML = str;
   gameBox.style.width = w * boxWidth + 'px';
   pushBoxArr();
   toHTML();
  }

  // 随机获取坐标
  function getPosition() {
   var t, f;
   (function () {
    t = parseInt(Math.random() * h);
    l = parseInt(Math.random() * w);
    if (('t' + t + '_l' + l) in boxArr) {
      arguments.callee();
    }
   })();
   return {t:t, l:l}
  }

  // 创建随机坐标的格子
  function CearteBox(name) {
  var p = getPosition();
  this.name = name;//图片名
  this.t = p.t;//行
  this.l = p.l;//列
  this.position = 't' + p.t + '_l' + p.l;//位置
  this.love = 0;//这个用于特殊,某些图片不同也可以连接
  switch (name) {
   case '100':
   case '200':
    this.love = 1;
    break;
   case '300':
   case '400':
   case '500':
    this.love = 2;
    break;
   case '600':
   case '700':
    this.love = 3;
    break;
   case '800':
   case '900':
    this.love = 4;
    break;
   }
  }

  // 产生88个格子（图片框）
  function pushBoxArr() {
   var index = 0;
   var last = arr.length - 1;
   for (var i=0; i< h;i++) {
    for (var j=0;j< w;j++) {
     var a = new CearteBox(arr[index]);//用图片名创建,每张图片四次
     boxArr['t' + a.t + '_l' + a.l] = a;//格子的位置(也是每张图片的id)
     if (index === last) {
      index = 0;
     } else {
      index += 1;
     }
    }
   }
  }

  // 初始化html
  function toHTML() {
   for (var i in boxArr) {//遍历所有图片的id
    byId(i).src = 'img/' + boxArr[i].name + '.png';
   }
  }

  // choose
  function choose(el) {
   if (el.src.indexOf('blank') >= 0) {//鼠标点击了空白图片
     return false;
   }else{
    el.className = 'active';//更改点击图片的样式
     //第一次点击或点击了同一张图片
    if (startBox == '' || startBox == el.id) {
     startBox = el.id;
    } else {//点击了第二张图片
     endBox = el.id;
     test(boxArr[startBox], boxArr[endBox]);
    }
   }
  }

 // 判断是不是可连接格子
 function test(a, b) {
  var can = function (a, b) {
    if (a.name == b.name) {//图片名相同就可以连接
     return true;
    } else {
     if (a.love != 0 && b.love != 0) {
      if (a.love == b.love) {
       return true;
      } else {
       return false;
      }
     } else {
      return false;
     }
   }
  }(a, b);//立即执行
  if (can) {//可以连接
   go(a, b);
  } else {//不能连接
   byId(startBox).className = '';
   startBox = endBox;//指向第二张图片
   endBox = '';
  }
 }

 // 判断是否连通
 function go(a, b) {
  var _ap = a.position, _bp = b.position;
  var a = a, b = b, temp, isKill = false;

  // 建立四个点，判断是否两两相通
  var pt1, pt2, pt3, pt4;
  // 上到下扫描
  if (isKill == false) {
   //交换位置
   if (a.t > b.t) {
    temp = a;
    a = b;
    b = temp;
   }
   for (var i = -1, len = h; i <= len; i++) {
    pt1 = a;
    pt2 = {t:i, l:a.l};
    pt3 = {t:i, l:b.l};
    pt4 = b;
    if( (!isNull(pt2) && (pt2.t != a.t) ) || ( !isNull(pt3) && (pt3.t != b.t) ) ){
       continue;
    }
    else if (link4pt(pt1, pt2, pt3, pt4)){
      isKill = true;
      kill(a, b);
      showLine(pt1, pt2, pt3, pt4);
      break;
      return;
    }
  }
  }

   // 左到右扫描
   if (isKill == false) {
    //交换位置
      if (a.l > b.l) {
        temp = a;
        a = b;
        b = temp;
      }
      for (var i = -1, len = w; i <= len; i++) {
        pt1 = a;
        pt2 = {t:a.t, l:i};
        pt3 = {t:b.t, l:i};
        pt4 = b;
        if( (!isNull(pt2) && (pt2.l != a.l) ) || ( !isNull(pt3) && (pt3.l != b.l) ) ){
          continue;
        }
        else if (link4pt(pt1, pt2, pt3, pt4)){
          isKill = true;
          kill(a, b);
          showLine(pt1, pt2, pt3, pt4);
          break;
          return;
        }
      }
    }

    //扫描完毕
    if(isKill == false){
      endBox = '';
      byId(_ap).className = '';
      startBox = _bp;
    }
  }

  //干掉格子，删除boxArr中相应格子
  function kill(a, b) {
    boxArr[a.position] = null;
    boxArr[b.position] = null;
    boxsLength -= 2;
    startBox = '';
    endBox = '';
  }

  // 显示链接路径
  function showLine(a, b, c, d) {
    var line1 =show2pt(a,b);
    var line2 = show2pt(b,c);
    var line3 = show2pt(c,d);
    var hideLine = function () {
      gameBox.removeChild(line1);
      gameBox.removeChild(line2);
      gameBox.removeChild(line3);
      byId(a.position).src = byId(d.position).src ='img/blank.gif';
      byId(a.position).className = byId(d.position).className = '';
      if (boxsLength<=0) {
        alert('亲，你赢了！好腻害啊。');
        byId('agin').style.display = 'block';
      }
    }
    setTimeout(hideLine, 300);

    function show2pt (a, b){
      var top, left, width, height, line = document.createElement('div');
      var a = a, b = b, temp;
      // 交换位置
      if (a.t > b.t || a.l > b.l) {
        temp = a;
        a = b;
        b = temp;
      }
      top = boxWidth * a.t + 30 + 'px';
      left = boxWidth * a.l + 30 + 'px';
      // 同行(t相等)
      if (a.t == b.t) {
        width = boxWidth * (b.l - a.l) + 1 + 'px';
        height = '1px';
      }
      // 同列(l相等)
      if (a.l == b.l) {
        width = '1px';
        height = boxWidth * (b.t - a.t) + 1 + 'px';
      }
      line.style.top = top;
      line.style.left = left;
      line.style.width = width;
      line.style.height = height;
      return gameBox.appendChild(line);
    }
  }

  // 单个格子是否空值
  function isNull (a) {
    return boxArr['t' + a.t + '_l' + a.l] ? false : true;
  }

  // 2点是否连通
  function link2pt (a, b) {
    var a = a, b = b, temp, canLink = true;
    // 交换位置
    if (a.t > b.t || a.l > b.l) {
      temp = a;
      a = b;
      b = temp;
    }
    if (a.t == b.t) {  //同行（t相等），a在b的左边
      for (var i = a.l + 1, len = b.l - 1; i <= len; i++) {
        if (boxArr['t' + a.t + '_l' + i]) {
          canLink = false;
          break;
        }
      }
    }else if (a.l == b.l) {  //同列（l相等），a在b的上边
      for (var i = a.t + 1, len = b.t - 1; i <= len; i++ ) {
        if(boxArr['t' + i + '_l' + a.l]) {
          canLink = false;
          break;
        }
      }
    } else {
      throw ('位置错误：a.t=' + a.t + ' b.t=' + b.t + ' a.l=' + a.l + ' b.l=' + b.l);
    }
    return canLink;
  }

  // 4个点是否两两连通
  function link4pt (pt1, pt2, pt3, pt4) {
    return link2pt(pt1, pt2) && link2pt(pt2, pt3) && link2pt(pt3, pt4);
  }
</script>
</head>
<body>
<p class="agin" id="agin" style="display: none;"><input type="button" onclick="init()" value="再来一把"></p>
<div id="game-box">
</div>
<p class="text" style="">相同图片可以连哦！啊哈哈哈~~ </p>
</body>
</html>

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