HTML+CSS
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>小鸟游戏</title>
<style>
* {
margin: 0;
padding: 0;
}
html,
body {
width: 100%;
height: 100%;
}
.box {
width: 800px;
height: 600px;
margin: 50px 300px;
overflow: hidden;
position: relative;
background: url(./img/bg.png) repeat 0px 0px;
}
#bird {
width: 34px;
height: 25px;
background: url(./img/bird.png) no-repeat -10px -8px;
position: absolute;
left: 100px;
top: 300px;
}
</style>
</head>
<body>
<div class="box">
<div id="bird"></div>
<button class="start">开始游戏</button>
</div>
<script src="./js/jquery-1.8.3.min.js"></script>
<script src="./js/index.js"></script>
</body>
</html>
JS代码
//获取游戏背景和小鸟
var box = $('.box');
var birdEle = $('#bird');
//初始化背景图
var sky = {
x: 0 //背景图初始位置为0
}
//初始化小鸟
var bird = {
speedX: 5, //小鸟在X轴的速度
SpeedY: 0, //小鸟在Y轴的速度
//小鸟坐标
x: birdEle.offset().left, //小鸟初始位置在绝对定位的位置
y: birdEle.offset().top,
}
var runing = false; //游戏状态
$('.start').click(function(){
runing = true;
})
setInterval(function () {
\
if (runing) {
//小鸟飞行(其实是背景在动)
sky.x -= 5; //背景每次-5px，以实现向左运动的效果
box.css({
backgroundPositionX : sky.x + 'px'
})
//小鸟上下运动
bird.SpeedY += 1; //每一次点击小鸟向上10px后开始自增也就是再自动向下
bird.y += bird.SpeedY; //小鸟自动不断向下运动
//判断游戏状态
if (bird.y < 0) { //超出游戏背景顶部时游戏结束
runing = false;
bird.y = 0;
}
if (bird.y + birdEle[0].offsetHeight > 600) { //超出游戏背景底部时游戏结束
runing = false;
bird.y = 600 - birdEle[0].offsetHeight;
}
birdEle.css({
top:bird.y + 'px'
})
}
}, 30);
//点击时小鸟向上运动
box.click(function(){
if(runing){
bird.SpeedY = -10; //点击一次向上运动10px
}
})
//创建管道
function creatPipe(position) {
var pipe = {};
pipe.x = position;
pipe.upHeight = 200 + parseInt(Math.random() * 100); //上管道高度为200 - 300px
pipe.doHeight = 600 - pipe.upHeight - 200; //下管道高度
pipe.doTop = pipe.upHeight + 200; //上下两管道之间200px
//创建上管道
var upPipe = document.createElement('div'); //新建div
upPipe.style.width = '52px';
upPipe.style.height = pipe.upHeight + 'px';
upPipe.style.background = 'url(./img/guandown.png) no-repeat center bottom';
upPipe.style.position = 'absolute';
upPipe.style.top = '0px';
upPipe.style.left = pipe.x + 'px';
box[0].appendChild(upPipe); //将上管道追加到游戏页面中
//创建下管道
var doPipe = document.createElement('div'); //新建div
doPipe.style.width = '52px';
doPipe.style.height = pipe.doHeight + 'px';
doPipe.style.background = 'url(./img/guanup.png) no-repeat center top';
doPipe.style.position = 'absolute';
doPipe.style.top = pipe.doTop + 'px';
doPipe.style.left = pipe.x + 'px';
box[0].appendChild(doPipe); //将下管道追加到游戏页面中
//管道进行运动
setInterval(function () {
if (runing) { //游戏处于运行状态时管道再运动
pipe.x -= 2; //x方向不断-2px，以实现管道向左运动的效果
upPipe.style.left = pipe.x + 'px';
doPipe.style.left = pipe.x + 'px';
if (pipe.x < -52) { //管道移出最左侧时回到原位，实现不间断效果
pipe.x = 800;
}
//上下管道临界值
var uCheck = bird.x + 34 > pipe.x && bird.x < pipe.x + 52 && bird.y < pipe.upHeight;
var dCheck = bird.x + 34 > pipe.x && bird.x < pipe.x + 52 && bird.y > pipe.upHeight + 200;
if (uCheck || dCheck) { //碰到上管道或下管道临界值则游戏终止
runing = false;
}
}
}, 30)
}
creatPipe(400); //产生四组管道
creatPipe(600);
creatPipe(800);
creatPipe(1000);
