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JavaScript实现像素鸟小游戏的详细流程

作者：遐想

最近通过javascript这门语言,然后结合html的来写一个简单的小游戏 ,这篇文章主要给大家介绍了关于JavaScript实现像素鸟小游戏的相关资料,文中通过实例代码介绍的非常详细,需要的朋友可以参考下

《像素鸟》游戏简单介绍

游戏中玩家必须控制一只小鸟，跨越由各种不同长度水管所组成的障碍，而这只鸟其实是根本不会飞的……所以玩家每点击一下小鸟就会飞高一点，不点击就会下降，玩家必须控制节奏，拿捏点击屏幕的时间点，让小鸟能在落下的瞬间跳起来，恰好能够通过狭窄的水管缝隙，只要稍一分神，马上就会失败阵亡。

1.功能结构及流程

包含功能 ：

1: 随机背景

2: 进行游戏

3:玩家分数排行榜

2.游戏实现效果展示

3.实现思路

代码展示介绍

游戏界面代码

不多介绍

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Fancy Bird</title>
    <link rel="stylesheet" href="./css/cscs.css" rel="external nofollow" >
    <link rel="shortcut icon" href="./birds/birds1.png" rel="external nofollow"  type="image/x-icon">
</head>
<body>
    <div class="map">
        <img src="./logo/flappyBird.png" alt="" class="flappyBird">
        <div class="home">
            <img src="./home/start.png" alt="" class="start">
            <img src="./home/ranking.png" alt="" class="ranking">
        </div>
        <div class="ready">
            <img src="./logo/getReody.png" alt="" class="getReody">
            <img src="./home/go.png" alt="" class="go">
        </div>
        <div class="finish">
            <img src="./logo/gameOver.png" alt="" class="gameOver">
            <div class="score">
                <i class="node">66</i>
                <i class="now"></i>
                <img src="./home/gold.png" alt="" class="gold">
            </div>
            <img src="./home/start.png" alt="" class="start2">
            <img src="./home/ranking.png" alt="" class="ranking">
        </div>
    </div>
    <script src="./js/jquery-2.2.0.min.js"></script>
    <script src="./js/game.js"></script>
    <script src="./js/init.js"></script>
</body>
</html>

css样式

不多介绍

* {
    margin: 0;
    padding: 0;
}

.map {
    margin: 20px auto;
    width: 520px;
    height: 855px;
    background: url(../mian/sky1.png);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    text-align: left;
}

p {
    position: absolute;
    font-size: 30px;
}

h4 {
    text-align: center;
    line-height: 10px;
}

.play {
    position: absolute;
    width: 52px;
    height: 45px;
    left: -10%;
    top: -10%;
    background: url(../birds/birds1.png) center;
}

.pillarTop {
    position: absolute;
    width: 52px;
    height: 420px;
    background: url(../TheConduit/pipe2.png) center no-repeat;
    left: 550px;
}

.pillarBottom {
    position: absolute;
    width: 52px;
    height: 420px;
    background: url(../TheConduit/pipe1.png) center no-repeat;
    left: 550px;
    bottom: 0;
}

.del {
    position: absolute;
    right: 10px;
    top: 0;
    font-size: 30px;
}

.flappyBird {
    width: 300px;
    position: absolute;
    top: 204px;
    left: 540px;
}

.home,
.ready {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%);
}

.home {
    left: -50%;
}

.ready {
    transform: translate(-50%, -50%);
    display: none;
}

.ready .go {
    margin-left: 29%;
}

.ready .getReody {
    margin-left: 32px;
}

.gold {
    position: absolute;
    left: 30px;
    top: -545px;
}

.finish {
    width: 250px;
    text-align: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
}

.score {
    position: relative;
    width: 231px;
    height: 117px;
    background: url(../home/finish.png);
    margin-left: 9px;
    z-index: 999;
}

.score .node {
    position: absolute;
    left: 175px;
    top: 35px
}

.score .now {
    position: absolute;
    left: 175px;
    top: 85px;
}

js代码

禁止页面选择以及鼠标右键

document.oncontextmenu = function () { return false; };
document.onselectstart = function () { return false; };

随机背景移动

这里我有两张背景图片，定义两个随机数，利用定时器使背景的x轴持续减少，然后形成背景移动；使用css的动画一样的效果，因人而异

// 背景移动
const map = document.querySelector('.map');
let mNum = getRandom(1, 2)
map.style.background = "url(./mian/sky" + mNum + ".png)"
let [Mbac, Pbac, y, angle, deg, flag, p, flagg] = [0, 1, 0, 0, -360, false, 0, true];
let [NO1, NO2, NO3, NO4, no5, chicken] = [null, null, null, null, null, null]
function init() {
    NO1 = setInterval(creatorPillar, 1200);
    NO5 = setTimeout(time, 2200);
    NO2 = setInterval(judge, 1000 / 60);
}
function move() {
    Mbac++;
    map.style.backgroundPositionX = "-" + Mbac + "px";
}

玩家控制像素鸟

定义一个定时器持续像素鸟y坐标减少，这样就会慢慢下落，绑定鼠标弹起事件，点击一次需要把像素鸟坐标增加

// 玩家
let play = document.createElement('div');
play.className = 'play';
map.append(play);
function a() {
    Pbac++;
    if (Pbac > 3) Pbac = 1;
    play.style.background = " url(./birds/birds" + Pbac + ".png)";
};
function judge() {
    if (flagg) {
        y += 0.2
        play.style.top = play.offsetTop + y + "px"
    }
    if (!flagg) {
        y -= 4.5
        play.style.top = play.offsetTop + y + "px"
        let time = setTimeout(() => {
            clearTimeout(time);
            flagg = true;
        }, 10);
    }
    if (play.offsetTop <= 50) {
        play.style.top = 50 + "px";
    }
    if (play.offsetTop >= map.offsetHeight - play.offsetHeight) {
        play.style.top = map.offsetHeight - play.offsetHeight + "px";
        stop()
    }
}
document.onmousedown = function () {
    y = -5
}

生成随机柱子

我写的是一个函数 然后定时器调用这个函数，然后生成两个柱子

// 生成柱子
function creatorPillar() {
    let pillarTop = document.createElement('div');
    let pillarBottom = document.createElement('div');
    let random = getRandom(100, 300) / 2
    pillarTop.className = "pillarTop";
    pillarBottom.className = "pillarBottom";
    map.append(pillarTop);
    map.append(pillarBottom);
    pillarTop.style.top = -random + "px"
    pillarBottom.style.bottom = -random + "px"
    NO4 = setInterval(() => {
        pillarTop.style.left = (pillarTop.offsetLeft -= 5) + "px"
        pillarBottom.style.left = (pillarBottom.offsetLeft -= 5) + "px"
        if (pillarTop.offsetLeft <= -100 && pillarBottom.offsetLeft <= -100) {
            pillarTop.remove();
            pillarBottom.remove();
        }
        if (pz(play, pillarTop)) {
            stop();
            siw()
        }
        if (pz(play, pillarBottom)) {
            stop();
            siw()
        }
    }, 20);
}

积分增加

由于我很懒很懒很懒很懒，就用定时器做的增加，可以靠判断来判断像素鸟是否经过了柱子，我没写不代表我不会写奥，因人而异嘛

// 积分
function time() {
    let P = document.createElement('p');
    map.append(P);
    NO3 = setInterval(() => {
        p++;
        P.innerHTML = p;
    }, 1250);
}
function pz(node1, node2) {
    let l1 = node1.offsetLeft;
    let r1 = node1.offsetLeft + node1.offsetWidth;
    let t1 = node1.offsetTop;
    let b1 = node1.offsetTop + node1.offsetHeight;
    let l2 = node2.offsetLeft;
    let r2 = node2.offsetLeft + node2.offsetWidth;
    let t2 = node2.offsetTop;
    let b2 = node2.offsetTop + node2.offsetHeight;
    if (l2 > r1 || r2 < l1 || t2 > b1 || b2 < t1) {
        return false;
    } else {
        return true;
    }
}
function getRandom(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}
function stop() {
    clearInterval(NO1);
    clearInterval(NO2);
    clearInterval(NO3);
    clearInterval(NO4);
    clearInterval(chicken);
    die();
}
function die() {
    document.onclick = null;
    setInterval(() => {
        deg += 7;
        play.style.top = (play.offsetTop += 5) + "px";
        play.style.transform = "rotateZ(" + deg + "deg)";
        if (play.offsetTop <= 0) play.style.top = 0 + "px"
        if (play.offsetTop >= map.offsetHeight - play.offsetHeight) {
            // deg = 90;
            play.style.top = map.offsetHeight - play.offsetHeight + "px"
        }
    }, 100);
    data()
}

代码要自己先看懂哦！

总结

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