JavaScript—飞机大战2版

前面的思路对了 BUG 出在了计时器和没有加判断页面是否存在元素
<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

    <style>

        * {

            margin: 0;

            padding: 0;

        }

        #view {

            margin: 0 auto;

            width: 400px;

            height: 680px;

            background-color: #00b4ff;

            opacity: 0.9;

            position: relative;

        }

        /*自己飞机的样式*/

        #air {

            width: 34px;

            height: 26px;

            position: absolute;

            background-color: palegreen;

        }

        /*敌机的样式*/

        .hair {

            width: 34px;

            height: 26px;

            position: absolute;

            background-color: darkmagenta;

        }

        /*子弹的样式*/

        .bullet {

            width: 4px;

            height: 10px;

            position: absolute;

            background-color: red;

        }

        h1{

            position: absolute;

            top: 300px;

            left: 700px;

        }

    </style>

</head>

<body>

<div id="view">

</div>

<h1 id="h1">0</h1>

</body>

<script>

    //获取区域

    let view = document.getElementById('view');

    // 创建自己的飞机

    let air = document.createElement('div');

    let count=0

    let  h1=document.getElementById('h1')

    air.id = 'air'

    document.body.appendChild(air)

    document.onmousemove = function (e) {

        e = e || window.event

        // 边距

        let aX = view.offsetLeft < e.clientX - air.offsetWidth / 2 && e.clientX + air.offsetWidth / 2 < view.offsetLeft + view.offsetWidth

        let aY = view.offsetTop < e.clientY - air.offsetHeight / 2 && e.clientY + air.offsetHeight / 2 < view.offsetTop + view.offsetHeight

        if (aX && aY) {

            air.style.left = e.clientX - air.offsetWidth / 2 + 'px';

            air.style.top = e.clientY - air.offsetHeight / 2 + 'px'

            ObJ_billet.bif = true

        }

    }

    //监听飞机子弹

    let GAME_time = setInterval(function () {

    //搜索所有的子弹，相遇 就被击毙。相遇条件 飞机左<=left 子弹<=you     top 子弹<=飞机

    for (let i = 0; i < ObJ_billet.arr.length; i++) {

        let barr = ObJ_billet.arr[i].split('|')

        for (let j = 0; j < ObJ_Hair.arr.length; j++) {

            let harr = ObJ_Hair.arr[j].split('|')//id x y

            if (document.getElementById(barr[0]) && document.getElementById(harr[0])) {

                console.log(1)

                let yif = parseInt(barr[2])+3 <= parseInt(harr[2]) //Y相遇

                let xif = parseInt(barr[1]) >= parseInt(harr[1]) && parseInt(barr[1]) <= parseInt(harr[1]) + 25

                if (yif && xif) {

                    count++;

                    h1.innerText=count+''

                    //消失元素 关闭记时器

                    let billet_a = document.getElementById(barr[0])

                    let hair_a = document.getElementById(harr[0])//获取敌机

                    billet_a.parentNode.removeChild(billet_a)//删除子弹

                    hair_a.parentNode.removeChild(hair_a)//删除敌机

                    // clearInterval(runBl_time)

                    //clearInterval(runHair_time)

                }

            }

        }

    }

    },100)

    let caerBl_time = setInterval(

        function () {

            if (ObJ_billet.bif) {

                //在自己飞机的上方

                caeationBillet()

                caeationHair()

            }

        }, 1000)

    //用来保存子弹数据

    let ObJ_billet = {

        name: 'billet_',

        num: 0,

        bif: false,

        //是否在区域

        arr: []//保存id，xy坐标

    }

    let ObJ_Hair = {

        name: 'hair_',

        num: 0,

        arr: []//保存id，xy坐标

    }

    // let runBl_time = null;//子弹定时器

    // let runHair_time = null;//飞机定时器

    // // 子弹运动

    function run_Billet(element, i) {

       let runBl_time = setInterval(function () {

            element.style.top = element.offsetTop - 1 + 'px'

            ObJ_billet.arr[i] = element.id + '|' + element.offsetLeft + '|' + element.offsetTop

            // 超出边界消失

            if (element.offsetTop < 0) {

                element.parentNode.removeChild(element);

                 clearInterval(runBl_time)

            }

        }, 30)

    }

    // 敌机运动

    function run_Hair(element, i) {

      let runHair_time = setInterval(function () {

            element.style.top = element.offsetTop + 1 + 'px'

            ObJ_Hair.arr[i] = element.id + '|' + element.offsetLeft + '|' + element.offsetTop + '|' + ''

            // 超出边界消失

            if (element.offsetTop > view.offsetHeight - element.offsetHeight) {

                element.parentNode.removeChild(element);

                clearInterval(runHair_time)

            }

        }, 30)

    }

    //创建子弹

    function caeationBillet() {

        let billet = document.createElement('div')

        billet.className = 'bullet'

        billet.id = ObJ_billet.name + ObJ_billet.num;

        document.body.appendChild(billet)

        //子弹在飞机上方

        billet.style.left = air.offsetLeft + air.offsetWidth / 2 + 'px'

        billet.style.top = air.offsetTop - billet.offsetHeight - 1 + 'px'

        //保存数据

        ObJ_billet.arr[ObJ_billet.num] = billet.id + '|' + billet.offsetLeft + '|' + billet.offsetTop + '|' + '1'

        //子弹运动

        run_Billet(billet, ObJ_billet.num)

        // 自增1

        ObJ_billet.num += 1

        //挡子弹有最多50个

        if (ObJ_billet.num >= 50) {

            ObJ_billet.num = 0;

        }

    }

    // 创建敌机

    function caeationHair() {

        let hair = document.createElement('div')

        hair.className = 'hair'

        hair.id = ObJ_Hair.name + ObJ_Hair.num;

        document.body.appendChild(hair)

        //飞机由上往下 left随机大小0到view宽度

        let random_L = randomNum(view.offsetLeft, view.offsetLeft + view.offsetWidth - hair.offsetWidth)

        hair.style.left = random_L + 'px'

        hair.style.top = 0 + 'px'

        ObJ_Hair.arr[ObJ_Hair.num] = hair.id + '|' + hair.offsetLeft + '|' + hair.offsetTop

        run_Hair(hair, ObJ_Hair.num)

        // 自增1

        ObJ_Hair.num += 1

        //飞机有最多100个

        if (ObJ_Hair.num >= 50) {

            ObJ_Hair.num = 0;

        }

    }

    //生成从minNum到maxNum的随机数

    function randomNum(minNum, maxNum) {

        return parseInt(Math.random() * (maxNum - minNum + 1) + minNum)

    }

</script>

</html>
　　总结：
　　　　　　BUG还是有，就是让他最小化以后过一会就乱了。。。。还有我用了很多计时器套循环，我担心效率与内存空间的问题。
当然还是满激动的。特别是第一次敌机和子弹相遇的时候。就好像电视剧《创业时代》郭鑫年说的这就是我的孩子一样
巴特西

JavaScript—飞机大战2版

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