标签：round sed extc struct bind get amp dex last
直入正题，用JS实现一个简单的打地鼠游戏
因为功能比较简单就直接裸奔JS了，先看看效果图，或者 在线玩玩 吧
如果点击颜色比较深的那个（俗称坏老鼠），将扣分50；如果点击颜色比较浅的那个（俗称好老鼠），将得分100
老鼠好像有点难画，又不想用图片，就直接用CSS画个简单的图代表老鼠和坑吧
html结构
挺简单，用9个 li 标签代表坑，用9个 div 标签代表老鼠
<div class="container"> <h4>无聊打打地鼠</h4> <div class="game-top"> <p><input type="button" value="开始游戏" id="game-start"><p> <p>得分：<span id="game-score">0</span></p> <p>剩余时间：<span id="game-time">60</span> s</p> </div> <div class="game-content"> <ul> <li><div></div></li> <li><div></div></li> <li><div></div></li> <li><div></div></li> <li><div></div></li> <li><div></div></li> <li><div></div></li> <li><div></div></li> <li><div></div></li> </ul> </div> </div>
CSS的实现
有点小技巧
对于坑，加个box-shadow: ... inset 美化一下样式
.game-content li { float: left; margin-top: 50px; margin-left: 30px; width: 100px; height: 50px; border-radius: 50%; background-color: #67d0b4; box-shadow: 0 0 50px #706565 inset; }
对于老鼠，用 border-radius：50%/40% 绘制，第二个参数还是有点使用价值的
.game-content div { position: relative; margin-top: -15px; margin-left: 25px; width: 50px; height: 70px; border-radius: 50%/40%; background-color: #dfb25d; opacity: 0; }
而要让老鼠动起来，这里的处理方式就是用动画了，老鼠运动的时候，先往上再往下即可，控制好相对位置看起来和谐一点就行
@keyframes mouse-move { 50% { margin-top: -40px; opacity: 1; } 100% { margin-top: -15px; opacity: 0; } } .game-content div.active { animation: mouse-move 2s ease-in-out infinite; }
注意 animation: ... infinite 的使用，让动画能一直进行下去，我们使用JS控制好时间差判断应该显示那个老鼠，应该显示多少只老鼠即可
不然的画，会发现动画完成了再也无法让它继续进行了
1 <style type="text/css"> 2 .container { 3 width: 500px; 4 height: 300px; 5 margin: 50px auto; 6 border: 1px solid #ddd; 7 text-align: center; 8 } 9 .game-top { 10 padding-top: 10px; 11 width: 100%; 12 height: 90px; 13 } 14 .game-top p { 15 margin: 5px; 16 } 17 .game-content { 18 overflow: auto; 19 width: 100%; 20 border-top: 1px solid #ddd; 21 background-color: #ddf; 22 } 23 .game-content ul { 24 list-style: none; 25 } 26 .game-content li { 27 float: left; 28 margin-top: 50px; 29 margin-left: 30px; 30 width: 100px; 31 height: 50px; 32 border-radius: 50%; 33 background-color: #67d0b4; 34 box-shadow: 0 0 50px #706565 inset; 35 } 36 .game-content li:last-child { 37 margin-bottom: 50px; 38 } 39 .game-content div { 40 position: relative; 41 margin-top: -15px; 42 margin-left: 25px; 43 width: 50px; 44 height: 70px; 45 border-radius: 50%/40%; 46 background-color: #dfb25d; 47 opacity: 0; 48 } 49 .game-content div.good { 50 background-color: #dfb25d; 51 } 52 .game-content div.bad { 53 background-color: #a48f5c; 54 } 55 @keyframes mouse-move { 56 50% { 57 margin-top: -40px; 58 opacity: 1; 59 } 60 100% { 61 margin-top: -15px; 62 opacity: 0; 63 } 64 } 65 .game-content div.active { 66 animation: mouse-move 2s ease-in-out infinite; 67 } 68 </style>
JS的处理
逻辑是点击开始游戏，倒计时开始，同时好坏老鼠不断运动，控制好坑中好坏老鼠及其数量的随机性，点击好老鼠加分，点击坏老鼠减分，时间到结束游戏。
先看看老鼠的运动
// 运动操作 moveUpAndDown: function() { var that = this; // 定时器随机定义good|bad老鼠个数，以及需要显示的个数 that.moveTime = setInterval(function() { for (var i = 0, j = that.mouses.length; i < j; ++i) { that.mouses[i].setAttribute(‘clicked‘, ‘0‘); that.mouses[i].className = ‘good active‘; that.mouses[i].style.display = ‘none‘; } // bad 的个数 for (var i = 0; i < that.getRandom(0, 8); i++) { that.mouses[that.getRandom(0, 8)].className = ‘bad active‘; } // 要显示的个数 for (var i = 0; i < that.getRandom(0, 8); i++) { that.mouses[that.getRandom(0, 8)].style.display = ‘block‘; } }, 2000); },
使用定时器，定时器的循环与CSS中的动画设置一致，保证循环连贯性
设置class为good 即可定义出一只好老鼠，同理bad 为坏老鼠
在开始游戏，进行调用时，设置class为active 即可让老鼠运动起来
对于打老鼠的操作，要注意到只有运动的老鼠才能点击，每只老鼠只能点击一次
// 打地鼠操作 that.mousesWrap[0].addEventListener(‘click‘, function(e) { e = e || window.event; var elem = e.target || e.srcElement; // 如果当前项被隐藏则不操作，多次点击只取第一次分数 if (elem.style.display !== ‘block‘ || elem.getAttribute(‘clicked‘) === ‘1‘) { return; } // 扣分 if (elem.className.indexOf(‘bad‘) !== -1) { that.score -= that.badScore; } // 加分 else { that.score += that.goodScore; } elem.setAttribute(‘clicked‘, ‘1‘); that.text(that.gameScore[0], that.score); }, false);
倒计时结束之后，清除两个计时器，同时将所有老鼠项display都设为none 即可（否则动画会一直循环展示出来）
// 倒计时，当前剩余游戏时间 countDown: function() { var that = this; var t = setInterval(function() { that.text(that.gameTime[0], --that.totalTime); if (that.totalTime === 0) { clearInterval(t); clearInterval(that.moveTime); for (var i = 0, j = that.mouses.length; i < j; ++i) { that.mouses[i].style.display = ‘none‘; } alert(‘游戏结束，得分为：‘ + that.score); } }, 1000); },
1 <script type="text/javascript"> 2 3 function MouseGame() { 4 this.mousesWrap = this.$(‘.game-content‘); 5 this.mouses = this.$(‘.game-content div‘); 6 this.gameStart = this.$(‘#game-start‘); 7 this.gameTime = this.$(‘#game-time‘); 8 this.gameScore = this.$(‘#game-score‘); 9 this.goodScore = 100; 10 this.badScore = 50; 11 12 this.bindEvent(); 13 } 14 15 MouseGame.prototype = { 16 constructor: MouseGame, 17 18 /** 19 * 获取元素 20 * @param {String} elem 元素的字符串标识 21 * @example 22 * $(‘div‘) | $(‘p.active‘) 23 * @return {NodeList} 获取的元素集 24 */ 25 $: function(elem) { 26 return document.querySelectorAll(elem); 27 }, 28 29 /** 30 * 获取给定范围的随机数 31 * @param {Number} from 起始 32 * @param {Number} to 结束 33 * @return {Number} 随机数 34 */ 35 getRandom: function(from, to) { 36 return Math.floor(Math.random() * (to - from + 1)) + from; 37 }, 38 39 /** 40 * 设置元素内容 41 * @param {HTMLElement} elem 要设置的元素 42 * @param {String} val 设置的内容 43 * @return {String} 设置好的内容|元素本身的内容 44 */ 45 text: function(elem, val) { 46 if (elem.textContent) { 47 return val !== undefined ? elem.textContent = val : elem.textContent; 48 } else if (elem.innerText) { 49 return val !== undefined ? elem.innerText = val : elem.innerText; 50 } 51 }, 52 53 // 运动操作 54 moveUpAndDown: function() { 55 var that = this; 56 57 // 定时器随机定义good|bad老鼠个数，以及需要显示的个数 58 that.moveTime = setInterval(function() { 59 60 for (var i = 0, j = that.mouses.length; i < j; ++i) { 61 that.mouses[i].setAttribute(‘clicked‘, ‘0‘); 62 that.mouses[i].className = ‘good active‘; 63 that.mouses[i].style.display = ‘none‘; 64 } 65 66 // bad 的个数 67 for (var i = 0; i < that.getRandom(0, 8); i++) { 68 that.mouses[that.getRandom(0, 8)].className = ‘bad active‘; 69 } 70 71 // 要显示的个数 72 for (var i = 0; i < that.getRandom(0, 8); i++) { 73 that.mouses[that.getRandom(0, 8)].style.display = ‘block‘; 74 } 75 }, 2000); 76 }, 77 78 // 打地鼠操作 79 bindEvent: function() { 80 var that = this; 81 82 // 监听游戏开始/重新开始 83 that.gameStart[0].addEventListener(‘click‘, function() { 84 that.startGame(); 85 }, false); 86 87 // 打地鼠操作 88 that.mousesWrap[0].addEventListener(‘click‘, function(e) { 89 e = e || window.event; 90 var elem = e.target || e.srcElement; 91 // 如果当前项被隐藏则不操作，多次点击只取第一次分数 92 if (elem.style.display !== ‘block‘ || elem.getAttribute(‘clicked‘) === ‘1‘) { 93 return; 94 } 95 // 扣分 96 if (elem.className.indexOf(‘bad‘) !== -1) { 97 that.score -= that.badScore; 98 } 99 // 加分 100 else { 101 that.score += that.goodScore; 102 } 103 104 elem.setAttribute(‘clicked‘, ‘1‘); 105 that.text(that.gameScore[0], that.score); 106 }, false); 107 }, 108 109 // 倒计时，当前剩余游戏时间 110 countDown: function() { 111 var that = this; 112 113 var t = setInterval(function() { 114 that.text(that.gameTime[0], --that.totalTime); 115 116 if (that.totalTime === 0) { 117 clearInterval(t); 118 clearInterval(that.moveTime); 119 120 for (var i = 0, j = that.mouses.length; i < j; ++i) { 121 that.mouses[i].style.display = ‘none‘; 122 } 123 124 alert(‘游戏结束，得分为：‘ + that.score); 125 } 126 }, 1000); 127 }, 128 129 // 开始游戏 130 startGame: function() { 131 this.score = 0; 132 this.totalTime = 60; 133 this.text(this.gameTime[0], this.totalTime); 134 this.text(this.gameScore[0], this.score); 135 136 this.countDown(); 137 this.moveUpAndDown(); 138 } 139 }; 140 141 new MouseGame(); 142 </script>
代码有注释应该不难看懂了
那么..快来fork吧..
标签：round sed extc struct bind get amp dex last
原文地址：http://www.cnblogs.com/imwtr/p/6011407.html
