花了两天时间用html+css+js做了一个网页版坦克大战游戏

大家好，我是孙叫兽，本期内容给大家分享如何用html+css+javaScript去做一个简易网页版坦克游戏。

坦克游戏玩法及介绍

项目结构

源码地址：

坦克游戏玩法及介绍

我们先来看一下首页。

打开这个首页很简单，基本是上面这个样子，然后选择两个人回车就可以进行玩耍了，这个游戏需要两个人一起操作，玩家1（我）：使用WASD四个键进行上左下右方向的控制，通过space键进行设计射击。玩家2（女朋友）：通过方向键上下左右控制方向，通过enter键盘射击。基本上我控制整个电脑键盘的左边，她控制电脑键盘的右边。通过N键进行下一关，P键选择上一关。再键盘上显示如下。

下面演示一下如何进入游戏

通过方向键的下键选择两个人，然后点击回车进入游戏。也可以选择一个人进行回车进行战斗。

一个人战斗的状态。

两个人战斗的状态。

至于这个游戏规则我想大家都应该知道，这个里面的砖头可以打破，对手可以被打到，不能自己人打自己人，最外层的墙不能打破，坚硬的砖头也不能打破。把对手打完就可以进行下一关，不要先被对手的子弹打到，不然你就GG了。

比如图中红色标记的砖头是打不破的，只能绕道走，还有只能再yellow标记的区域内操作，其它砖头用子弹就可以打破，不能让对手先打破你的大本营（我右边中间的老鹰），不然又得GG.

整个游戏规则大体是这样，下面看一下代码。

项目结构

整个项目由五部分组成，分为背景音乐、基础样式、动图、核心JS及首页静态展示。不涉及后端，纯前端实现。

index.html

<!DOCTYPE html>
<html lang="zh" class="no-js demo-1"><head><meta charset="UTF-8" /><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <script src="js/jquery.min.js"></script><script src="js/Helper.js"></script><script src="js/keyboard.js"></script><script src="js/const.js"></script><script src="js/level.js"></script><script src="js/crackAnimation.js"></script><script src="js/prop.js"></script><script src="js/bullet.js"></script><script src="js/tank.js"></script><script src="js/num.js"></script><script src="js/menu.js"></script><script src="js/map.js"></script><script src="js/Collision.js"></script><script src="js/stage.js"></script><script src="js/main.js"></script><link rel="stylesheet" type="text/css" href="css/default.css" /><style type="text/css">#canvasDiv canvas{position:absolute;}</style></head><body><div class="container"><head><h3>操作说明：玩家1：WASD上左下右，space射击；玩家2：方向键，enter射击。n下一关，p上一关。</h3></head><div class="main clearfix"><div id="canvasDiv" ><canvas id="wallCanvas" ></canvas> <canvas id="tankCanvas" ></canvas><canvas id="grassCanvas" ></canvas><canvas id="overCanvas" ></canvas> <canvas id="stageCanvas" ></canvas></div></div></div><!-- /container --><div style="text-align:center;">
<p>来源:<a href="https://sunmenglei.blog.csdn.net/" target="_blank">孙叫兽的博客</a></p>
</div></body>
</html>

css

*, *:after, *:before { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }
body, html { font-size: 100%; padding: 0; margin: 0; height: 100%;}/* Clearfix hack by Nicolas Gallagher: http://nicolasgallagher.com/micro-clearfix-hack/ */
.clearfix:before, .clearfix:after { content: " "; display: table; }
.clearfix:after { clear: both; }body {font-family: "Helvetica Neue",Helvetica,Arial,'Microsoft YaHei',sans-serif,'Lato', Calibri;color: #777;background: #f6f6f6;
}a {color: #555;text-decoration: none;outline: none;
}a:hover,
a:active {color: #777;
}a img {border: none;
}
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.main {/*max-width: 69em;*/width: 100%;height: 100%;overflow: hidden;
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.demo-scroll{overflow-y: scroll;width: 100%;height: 100%;
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}.htmleaf-top span.right a {float: left;display: block;
}.htmleaf-icon:before {font-family: 'codropsicons';margin: 0 4px;speak: none;font-style: normal;font-weight: normal;font-variant: normal;text-transform: none;line-height: 1;-webkit-font-smoothing: antialiased;
}/* Demo Buttons Style */
.htmleaf-demos {padding-top: 1em;font-size: 0.9em;
}.htmleaf-demos a {display: inline-block;margin: 0.2em;padding: 0.45em 1em;background: #999;color: #fff;font-weight: 700;border-radius: 2px;
}.htmleaf-demos a:hover,
.htmleaf-demos a.current-demo,
.htmleaf-demos a.current-demo:hover {opacity: 0.6;
}.htmleaf-nav {text-align: center;
}.htmleaf-nav a {display: inline-block;margin: 20px auto;padding: 0.3em;
}
.bb-custom-wrapper {width: 420px;position: relative;margin: 0 auto 40px;text-align: center;
}
/* Demo Styles */.demo-1 body {color: #87968e;background: #fff2e3;
}.demo-1 a {color: #72b890;
}.demo-1 .htmleaf-demos a {background: #72b890;color: #fff;
}.demo-2 body {color: #fff;background: #c05d8e;
}.demo-2 a {color: #d38daf;
}.demo-2 a:hover,
.demo-2 a:active {color: #fff;
}.demo-2 .htmleaf-demos a {background: #883b61;color: #fff;
}.demo-2 .htmleaf-top a:hover {background: rgba(255,255,255,0.3);color: #333;
}.demo-3 body {color: #87968e;background: #fff2e3;
}.demo-3 a {color: #ea5381;
}.demo-3 .htmleaf-demos a {background: #ea5381;color: #fff;
}.demo-4 body {color: #999;background: #fff2e3;overflow: hidden;
}.demo-4 a {color: #1baede;
}.demo-4 a:hover,
.demo-4 a:active {opacity: 0.6;
}.demo-4 .htmleaf-demos a {background: #1baede;color: #fff;
}.demo-5 body {background: #fffbd6;
}
/****/
.related {/*margin-top: 5em;*/color: #fff;background: #333;text-align: center;font-size: 1.25em;padding: 3em 0;overflow: hidden;
}.related a {display: inline-block;text-align: left;margin: 20px auto;padding: 10px 20px;opacity: 0.8;-webkit-transition: opacity 0.3s;transition: opacity 0.3s;-webkit-backface-visibility: hidden;
}.related a:hover,
.related a:active {opacity: 1;
}.related a img {max-width: 100%;
}.related a h3 {font-weight: 300;margin-top: 0.15em;color: #fff;
}@media screen and (max-width: 40em) {.htmleaf-icon span {display: none;}.htmleaf-icon:before {font-size: 160%;line-height: 2;}}@media screen and (max-width: 46.0625em) {.column {width: 100%;min-width: auto;min-height: auto;padding: 1em; }.column p {text-align: left;font-size: 1.5em;}.column:nth-child(2) {box-shadow: 0 -1px 0 rgba(0,0,0,0.1);}
}@media screen and (max-width: 25em) {.htmleaf-icon span {display: none;}}

核心js

/*** 检测2个物体是否碰撞* @param object1 物体1* @param object2 物体2* @param overlap 允许重叠的大小* @returns {Boolean} 如果碰撞了，返回true*/
function CheckIntersect(object1, object2, overlap)
{//    x-轴                      x-轴//  A1------>B1 C1              A2------>B2 C2//  +--------+   ^              +--------+   ^//  | object1|   | y-轴         | object2|   | y-轴//  |        |   |              |        |   |//  +--------+  D1              +--------+  D2////overlap是重叠的区域值A1 = object1.x + overlap;B1 = object1.x + object1.size - overlap;C1 = object1.y + overlap;D1 = object1.y + object1.size - overlap;A2 = object2.x + overlap;B2 = object2.x + object2.size - overlap;C2 = object2.y + overlap;D2 = object2.y + object2.size - overlap;//假如他们在x-轴重叠if(A1 >= A2 && A1 <= B2|| B1 >= A2 && B1 <= B2){//判断y-轴重叠if(C1 >= C2 && C1 <= D2 || D1 >= C2 && D1 <= D2){return true;}}return false;
}/*** 坦克与地图块碰撞* @param tank 坦克对象* @param mapobj 地图对象* @returns {Boolean} 如果碰撞，返回true*/
function tankMapCollision(tank,mapobj){//移动检测，记录最后一次的移动方向，根据方向判断+-overlap,var tileNum = 0;//需要检测的tile数var rowIndex = 0;//map中的行索引var colIndex = 0;//map中的列索引var overlap = 3;//允许重叠的大小//根据tank的x、y计算出map中的row和colif(tank.dir == UP){rowIndex = parseInt((tank.tempY + overlap  - mapobj.offsetY)/mapobj.tileSize);colIndex = parseInt((tank.tempX + overlap- mapobj.offsetX)/mapobj.tileSize);}else if(tank.dir == DOWN){//向下，即dir==1的时候，行索引的计算需要+tank.HeightrowIndex = parseInt((tank.tempY - overlap - mapobj.offsetY + tank.size)/mapobj.tileSize);colIndex = parseInt((tank.tempX + overlap- mapobj.offsetX)/mapobj.tileSize);}else if(tank.dir == LEFT){rowIndex = parseInt((tank.tempY + overlap- mapobj.offsetY)/mapobj.tileSize);colIndex = parseInt((tank.tempX + overlap - mapobj.offsetX)/mapobj.tileSize);}else if(tank.dir == RIGHT){rowIndex = parseInt((tank.tempY + overlap- mapobj.offsetY)/mapobj.tileSize);//向右，即dir==3的时候，列索引的计算需要+tank.HeightcolIndex = parseInt((tank.tempX - overlap - mapobj.offsetX + tank.size)/mapobj.tileSize);}if(rowIndex >= mapobj.HTileCount || rowIndex < 0 || colIndex >= mapobj.wTileCount || colIndex < 0){return true;}if(tank.dir == UP || tank.dir == DOWN){var tempWidth = parseInt(tank.tempX - map.offsetX - (colIndex)*mapobj.tileSize + tank.size - overlap);//去除重叠部分if(tempWidth % mapobj.tileSize == 0 ){tileNum = parseInt(tempWidth/mapobj.tileSize);}else{tileNum = parseInt(tempWidth/mapobj.tileSize) + 1;}for(var i=0;i<tileNum && colIndex+i < mapobj.wTileCount ;i++){var mapContent = mapobj.mapLevel[rowIndex][colIndex+i];if(mapContent == WALL || mapContent == GRID || mapContent == WATER || mapContent == HOME || mapContent == ANOTHREHOME){if(tank.dir == UP){tank.y = mapobj.offsetY + rowIndex * mapobj.tileSize + mapobj.tileSize - overlap;}else if(tank.dir == DOWN){tank.y = mapobj.offsetY + rowIndex * mapobj.tileSize - tank.size + overlap;}return true;}}}else{var tempHeight = parseInt(tank.tempY - map.offsetY - (rowIndex)*mapobj.tileSize + tank.size - overlap);//去除重叠部分if(tempHeight % mapobj.tileSize == 0 ){tileNum = parseInt(tempHeight/mapobj.tileSize);}else{tileNum = parseInt(tempHeight/mapobj.tileSize) + 1;}for(var i=0;i<tileNum && rowIndex+i < mapobj.HTileCount;i++){var mapContent = mapobj.mapLevel[rowIndex+i][colIndex];if(mapContent == WALL || mapContent == GRID || mapContent == WATER || mapContent == HOME || mapContent == ANOTHREHOME){if(tank.dir == LEFT){tank.x = mapobj.offsetX + colIndex * mapobj.tileSize + mapobj.tileSize - overlap;}else if(tank.dir == RIGHT){tank.x = mapobj.offsetX + colIndex * mapobj.tileSize - tank.size + overlap;}return true;}}}return false;
}/*** 子弹与地图块的碰撞* @param bullet 子弹对象* @param mapobj 地图对象*/
function bulletMapCollision(bullet,mapobj){var tileNum = 0;//需要检测的tile数var rowIndex = 0;//map中的行索引var colIndex = 0;//map中的列索引var mapChangeIndex = [];//map中需要更新的索引数组var result = false;//是否碰撞//根据bullet的x、y计算出map中的row和colif(bullet.dir == UP){rowIndex = parseInt((bullet.y - mapobj.offsetY)/mapobj.tileSize);colIndex = parseInt((bullet.x - mapobj.offsetX)/mapobj.tileSize);}else if(bullet.dir == DOWN){//向下，即dir==1的时候，行索引的计算需要+bullet.HeightrowIndex = parseInt((bullet.y - mapobj.offsetY + bullet.size)/mapobj.tileSize);colIndex = parseInt((bullet.x - mapobj.offsetX)/mapobj.tileSize);}else if(bullet.dir == LEFT){rowIndex = parseInt((bullet.y - mapobj.offsetY)/mapobj.tileSize);colIndex = parseInt((bullet.x - mapobj.offsetX)/mapobj.tileSize);}else if(bullet.dir == RIGHT){rowIndex = parseInt((bullet.y - mapobj.offsetY)/mapobj.tileSize);//向右，即dir==3的时候，列索引的计算需要+bullet.HeightcolIndex = parseInt((bullet.x - mapobj.offsetX + bullet.size)/mapobj.tileSize);}if(rowIndex >= mapobj.HTileCount || rowIndex < 0 || colIndex >= mapobj.wTileCount || colIndex < 0){return true;}if(bullet.dir == UP || bullet.dir == DOWN){var tempWidth = parseInt(bullet.x - map.offsetX - (colIndex)*mapobj.tileSize + bullet.size);if(tempWidth % mapobj.tileSize == 0 ){tileNum = parseInt(tempWidth/mapobj.tileSize);}else{tileNum = parseInt(tempWidth/mapobj.tileSize) + 1;}for(var i=0;i<tileNum && colIndex+i < mapobj.wTileCount ;i++){var mapContent = mapobj.mapLevel[rowIndex][colIndex+i];if(mapContent == WALL || mapContent == GRID || mapContent == HOME || mapContent == ANOTHREHOME){//bullet.distroy();result = true;if(mapContent == WALL){//墙被打掉mapChangeIndex.push([rowIndex,colIndex+i]);}else if(mapContent == GRID){}else{isGameOver = true;break;}}}}else{var tempHeight = parseInt(bullet.y - map.offsetY - (rowIndex)*mapobj.tileSize + bullet.size);if(tempHeight % mapobj.tileSize == 0 ){tileNum = parseInt(tempHeight/mapobj.tileSize);}else{tileNum = parseInt(tempHeight/mapobj.tileSize) + 1;}for(var i=0;i<tileNum && rowIndex+i < mapobj.HTileCount;i++){var mapContent = mapobj.mapLevel[rowIndex+i][colIndex];if(mapContent == WALL || mapContent == GRID || mapContent == HOME || mapContent == ANOTHREHOME){//bullet.distroy();result = true;if(mapContent == WALL){//墙被打掉mapChangeIndex.push([rowIndex+i,colIndex]);}else if(mapContent == GRID){}else{isGameOver = true;break;}}}}//更新地图map.updateMap(mapChangeIndex,0);return result;
}

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