最近微信的飞机大战非常流行，下载量非常高。
利用JS进行模拟制作了一个简单的飞机大战[此源码有很多地方可以进行重构和优化]
[此游戏中没有使用HTML5 任何浏览器都可以运行]。
效果图：
原理：利用javascript setInterval函数不停的进行元素位置的切换和添加飞机子弹，在飞机和子弹的运动中进行位置
检测，进行子弹和飞机的消失。
1、添加飞机
setInterval(function () {
var flyDiv = $('<div class="flyDiv"></div>');
flyDiv.css({left: Math.random() * 578, top: -22});
flyDiv.appendTo(main);
}, 3000);
2、添加子弹
setInterval(function () {
var flyZ = $('<span class="z"></span>');
var l = m.offset().left + 23, t = m.offset().top;
flyZ.css({left: l, top: t});
flyZ.appendTo(main);
}, 600);
3、飞机的运动
setInterval(function () {
var allDiv = main.find('div'), allZ = main.find('span');
for (var i = 0; i < allDiv.length; i++) {
var f = $(allDiv[i]);
var nowTop = f.offset().top;
nowTop += 10;
f.css({top: nowTop});
for (var j = 0; j < allZ.length; j++) {
var z = $(allZ[j]);
if (testColl(
z.offset().left, z.offset().top, z.width(), z.height(),
f.offset().left, f.offset().top, f.width(), f.height()
)) {
z.remove();
f.remove();
sum.text(parseInt(sum.text()) + 1);
}
}
if (nowTop + 22 >= 400) {
f.remove();
}
}
}, 60);
4、子弹的运动
setInterval(function () {
var allZ = main.find('span'),
allDiv = main.find('div');
for (var i = 0; i < allZ.length; i++) {
var z = $(allZ[i]);
var nowTop = z.offset().top;
nowTop -= 10;
z.css({top: nowTop});
for (var j = 0; j < allDiv.length; j++) {
var f = $(allDiv[j]);
if (testColl(
z.offset().left, z.offset().top, z.width(), z.height(),
f.offset().left, f.offset().top, f.width(), f.height()
)) {
z.remove();
f.remove();
sum.text(parseInt(sum.text()) + 1);
}
}
if (nowTop + 22 <= 0) {
z.remove();
}
}
}, 60);
5、碰撞检测
function testColl(x1, y1, w1, h1, x2, y2, w2, h2) {
var l1 = x1;
var r1 = x1 + w1;
var t1 = y1;
var b1 = y1 + h1;
var l2 = x2;
var r2 = x2 + w2;
var t2 = y2;
var b2 = y2 + h2;
if (r1 < l2 || l1 > r2 || b1 < t2 || t1 > b2) {
return false;
}
else {
return true;
}
}
【完整源码】
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1"/>
<title> new document </title>
<style type="text/css">
* {
margin: 0;
padding: 0;
}
#main {
width: 600px;
height: 400px;
border: solid 1px #000;
background: #cccccc;
}
.flyDiv {
width: 20px;
height: 20px;
background: red;
position: absolute;
}
.z {
display: block;
width: 4px;
background: #000000;
height: 10px;
position: absolute;
top: 390px;
}
.m {
width: 50px;
height: 50px;
background: #000000;
position: absolute;
top: 345px;
left: 275px;
}
</style>
</head>
<body>
<!-- html :begin -->
<div id="main"></div>
<div class="m" id="m"></div>
<div>
打击飞机数：<label id="sum">0</label>
</div>
<!-- html :end -->
</body>
<script src="js/jquery-1.10.2.min.js"></script>
<script>
$(document).ready(function () {
var main = $('#main'),
m = $('#m'),
sum = $('#sum');
$(document).on('keydown', function (ev) {
var oEvent = ev || window.event;
var l = m.offset().left,
t = m.offset().top;
switch (oEvent.keyCode) {
case 37:
if (l >= 0) {
l -= 12;
}
break;
/* case 38:
if (t >= 0) {
t -= 2;
}
break;*/
case 39:
if (!(l + 50 > 600)) {
l += 12;
}
break;
case 40:
if (!(t + 50 > 400)) {
t += 12;
}
break;
}
m.css({left: l, top: t});
});
setInterval(function () {
var flyDiv = $('<div class="flyDiv"></div>');
flyDiv.css({left: Math.random() * 578, top: -22});
flyDiv.appendTo(main);
}, 3000);
setInterval(function () {
var allDiv = main.find('div'), allZ = main.find('span');
for (var i = 0; i < allDiv.length; i++) {
var f = $(allDiv[i]);
var nowTop = f.offset().top;
nowTop += 10;
f.css({top: nowTop});
for (var j = 0; j < allZ.length; j++) {
var z = $(allZ[j]);
if (testColl(
z.offset().left, z.offset().top, z.width(), z.height(),
f.offset().left, f.offset().top, f.width(), f.height()
)) {
z.remove();
f.remove();
sum.text(parseInt(sum.text()) + 1);
}
}
if (nowTop + 22 >= 400) {
f.remove();
}
}
}, 60);
setInterval(function () {
var flyZ = $('<span class="z"></span>');
var l = m.offset().left + 23, t = m.offset().top;
flyZ.css({left: l, top: t});
flyZ.appendTo(main);
}, 600);
setInterval(function () {
var allZ = main.find('span'),
allDiv = main.find('div');
for (var i = 0; i < allZ.length; i++) {
var z = $(allZ[i]);
var nowTop = z.offset().top;
nowTop -= 10;
z.css({top: nowTop});
for (var j = 0; j < allDiv.length; j++) {
var f = $(allDiv[j]);
if (testColl(
z.offset().left, z.offset().top, z.width(), z.height(),
f.offset().left, f.offset().top, f.width(), f.height()
)) {
z.remove();
f.remove();
sum.text(parseInt(sum.text()) + 1);
}
}
if (nowTop + 22 <= 0) {
z.remove();
}
}
}, 60);
function testColl(x1, y1, w1, h1, x2, y2, w2, h2) {
var l1 = x1;
var r1 = x1 + w1;
var t1 = y1;
var b1 = y1 + h1;
var l2 = x2;
var r2 = x2 + w2;
var t2 = y2;
var b2 = y2 + h2;
if (r1 < l2 || l1 > r2 || b1 < t2 || t1 > b2) {
return false;
}
else {
return true;
}
}
});
</script>
</html>