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。
目录
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
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。
来源:孙叫兽的博客
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tution:before,.fa-bank:before,.fa-university:before{content:"\f19c"}.fa-mortar-board:before,.fa-graduation-cap:before{content:"\f19d"}.fa-yahoo:before{content:"\f19e"}.fa-google:before{content:"\f1a0"}.fa-reddit:before{content:"\f1a1"}.fa-reddit-square:before{content:"\f1a2"}.fa-stumbleupon-circle:before{content:"\f1a3"}.fa-stumbleupon:before{content:"\f1a4"}.fa-delicious:before{content:"\f1a5"}.fa-digg:before{content:"\f1a6"}.fa-pied-piper:before{content:"\f1a7"}.fa-pied-piper-alt:before{content:"\f1a8"}.fa-drupal:before{content:"\f1a9"}.fa-joomla:before{content:"\f1aa"}.fa-language:before{content:"\f1ab"}.fa-fax:before{content:"\f1ac"}.fa-building:before{content:"\f1ad"}.fa-child:before{content:"\f1ae"}.fa-paw:before{content:"\f1b0"}.fa-spoon:before{content:"\f1b1"}.fa-cube:before{content:"\f1b2"}.fa-cubes:before{content:"\f1b3"}.fa-behance:before{content:"\f1b4"}.fa-behance-square:before{content:"\f1b5"}.fa-steam:before{content:"\f1b6"}.fa-steam-square:before{content:"\f1b7"}.fa-recycle:before{content:"\f1b8"}.fa-automobile:before,.fa-car:before{content:"\f1b9"}.fa-cab:before,.fa-taxi:before{content:"\f1ba"}.fa-tree:before{content:"\f1bb"}.fa-spotify:before{content:"\f1bc"}.fa-deviantart:before{content:"\f1bd"}.fa-soundcloud:before{content:"\f1be"}.fa-database:before{content:"\f1c0"}.fa-file-pdf-o:before{content:"\f1c1"}.fa-file-word-o:before{content:"\f1c2"}.fa-file-excel-o:before{content:"\f1c3"}.fa-file-powerpoint-o:before{content:"\f1c4"}.fa-file-photo-o:before,.fa-file-picture-o:before,.fa-file-image-o:before{content:"\f1c5"}.fa-file-zip-o:before,.fa-file-archive-o:before{content:"\f1c6"}.fa-file-sound-o:before,.fa-file-audio-o:before{content:"\f1c7"}.fa-file-movie-o:before,.fa-file-video-o:before{content:"\f1c8"}.fa-file-code-o:before{content:"\f1c9"}.fa-vine:before{content:"\f1ca"}.fa-codepen:before{content:"\f1cb"}.fa-jsfiddle:before{content:"\f1cc"}.fa-life-bouy:before,.fa-life-buoy:before,.fa-life-saver:before,.fa-support:before,.fa-life-ring:before{content:"\f1cd"}.fa-circle-o-notch:before{content:"\f1ce"}.fa-ra:before,.fa-rebel:before{content:"\f1d0"}.fa-ge:before,.fa-empire:before{content:"\f1d1"}.fa-git-square:before{content:"\f1d2"}.fa-git:before{content:"\f1d3"}.fa-hacker-news:before{content:"\f1d4"}.fa-tencent-weibo:before{content:"\f1d5"}.fa-qq:before{content:"\f1d6"}.fa-wechat:before,.fa-weixin:before{content:"\f1d7"}.fa-send:before,.fa-paper-plane:before{content:"\f1d8"}.fa-send-o:before,.fa-paper-plane-o:before{content:"\f1d9"}.fa-history:before{content:"\f1da"}.fa-circle-thin:before{content:"\f1db"}.fa-header:before{content:"\f1dc"}.fa-paragraph:before{content:"\f1dd"}.fa-sliders:before{content:"\f1de"}.fa-share-alt:before{content:"\f1e0"}.fa-share-alt-square:before{content:"\f1e1"}.fa-bomb:before{content:"\f1e2"}.fa-soccer-ball-o:before,.fa-futbol-o:before{content:"\f1e3"}.fa-tty:before{content:"\f1e4"}.fa-binoculars:before{content:"\f1e5"}.fa-plug:before{content:"\f1e6"}.fa-slideshare:before{content:"\f1e7"}.fa-twitch:before{content:"\f1e8"}.fa-yelp:before{content:"\f1e9"}.fa-newspaper-o:before{content:"\f1ea"}.fa-wifi:before{content:"\f1eb"}.fa-calculator:before{content:"\f1ec"}.fa-paypal:before{content:"\f1ed"}.fa-google-wallet:before{content:"\f1ee"}.fa-cc-visa:before{content:"\f1f0"}.fa-cc-mastercard:before{content:"\f1f1"}.fa-cc-discover:before{content:"\f1f2"}.fa-cc-amex:before{content:"\f1f3"}.fa-cc-paypal:before{content:"\f1f4"}.fa-cc-stripe:before{content:"\f1f5"}.fa-bell-slash:before{content:"\f1f6"}.fa-bell-slash-o:before{content:"\f1f7"}.fa-trash:before{content:"\f1f8"}.fa-copyright:before{content:"\f1f9"}.fa-at:before{content:"\f1fa"}.fa-eyedropper:before{content:"\f1fb"}.fa-paint-brush:before{content:"\f1fc"}.fa-birthday-cake:before{content:"\f1fd"}.fa-area-chart:before{content:"\f1fe"}.fa-pie-chart:before{content:"\f200"}.fa-line-chart:before{content:"\f201"}.fa-lastfm:before{content:"\f202"}.fa-lastfm-square:before{content:"\f203"}.fa-toggle-off:before{content:"\f204"}.fa-toggle-on:before{content:"\f205"}.fa-bicycle:before{content:"\f206"}.fa-bus:before{content:"\f207"}.fa-ioxhost:before{content:"\f208"}.fa-angellist:before{content:"\f209"}.fa-cc:before{content:"\f20a"}.fa-shekel:before,.fa-sheqel:before,.fa-ils:before{content:"\f20b"}.fa-meanpath:before{content:"\f20c"}
/* Header Style */
.main,
.container > header {
margin: 0 auto;
/*padding: 2em;*/
}
.container {
height: 100%;
}
.container > header {
padding-top: 20px;
padding-bottom: 20px;
text-align: center;
background: rgba(0,0,0,0.01);
}
.container > header h1 {
font-size: 2.625em;
line-height: 1.3;
margin: 0;
font-weight: 300;
}
.container > header span {
display: block;
font-size: 60%;
opacity: 0.3;
padding: 0 0 0.6em 0.1em;
}
/* Main Content */
.main {
/*max-width: 69em;*/
width: 100%;
height: 100%;
overflow: hidden;
}
.demo-scroll{
overflow-y: scroll;
width: 100%;
height: 100%;
}
.column {
float: left;
width: 50%;
padding: 0 2em;
min-height: 300px;
position: relative;
}
.column:nth-child(2) {
box-shadow: -1px 0 0 rgba(0,0,0,0.1);
}
.column p {
font-weight: 300;
font-size: 2em;
padding: 0;
margin: 0;
text-align: right;
line-height: 1.5;
}
/* To Navigation Style */
.htmleaf-top {
background: #fff;
background: rgba(255, 255, 255, 0.6);
text-transform: uppercase;
width: 100%;
font-size: 0.69em;
line-height: 2.2;
}
.htmleaf-top a {
padding: 0 1em;
letter-spacing: 0.1em;
color: #888;
display: inline-block;
}
.htmleaf-top a:hover {
background: rgba(255,255,255,0.95);
color: #333;
}
.htmleaf-top span.right {
float: right;
}
.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col
if(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.Height
rowIndex = 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.Height
colIndex = 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= 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;
}
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