squareDancing/js/handle.js

let uidList = []

// 领舞人领舞时间 秒
let leaderTime = 10

// 事件列表-中文
let eventTextList = ['切歌', '跳跃', '向左', '向右', '左抖腿', '右抖腿', '抖动', '一起喊', '镜头']

// 根据事件文字 获取事件名
function getEvent(name) {
    let map = {
        '切歌'  : 'change_song',
        '跳跃'  : 'dancing-down',
        '向左'  : 'dancing-left',
        '向右'  : 'dancing-right',
        '左抖腿' : 'dancing-wobble',
        '右抖腿' : 'dancing-wobble-right',
        '抖动'  : 'dancing-up',
        '一起喊' : 'all_shout',
        '镜头'  : scale()
    }

    return map[name] ? map[name] : ''
}

// 随机选择镜头
function scale() {
    let list = ['scale-left', 'scale-right', 'scale-bottom-left', 'scale-bottom-right']
    return list[Math.floor(Math.random() * list.length)];
}

// 字符串包含的事件 （仅取第一个）
function getFirstEventKeyword(name) {
    let event = ''
    $.each(eventTextList, function (index, item) {
        if (name.indexOf(item) != -1) {
            event = item
            return false
        }
    })
    return event
}

// 设置领舞 name=姓名 time=有效期 单位秒
function setLeader(name, time) {
    localStorage.setItem('leader', name)
    localStorage.setItem('leader_end_at', (new Date).getTime()/1000 + time)
}

// 获取领舞人信息
function getLeader() {
    let res = []
    res['name'] = localStorage.getItem('leader') ? localStorage.getItem('leader') : ''
    res['time'] = localStorage.getItem('leader_end_at') ? localStorage.getItem('leader_end_at') : 0
    
    return res
}

// 接受消息处理
function receiveMessage(event)
{
    // console.log(event.data, 'event test')
    // 我们能信任信息来源吗？
    if (event.origin !== "https://live.bilibili.com") {
    	return false
    }

    let dataList = JSON.parse(event.data)
    let data = dataList.dm
    let adminList = dataList.admin

    if (data.length <= 0) {
        return false
    }

    // 当前直播间 自己的弹幕 无法获取到ct和type值  就暂时过滤
    if (data.ct === '') {
        return false
    }

    // 大航海列表
    if (adminList.length > 0) {
        // 获取当前领舞人
        let leader = getLeader()
        let now = (new Date).getTime()/1000
        if (leader['name'] === '') {
            setLeader(adminList[0], leaderTime)
        } else {
            //领舞人存在 检查过期时间
            if (leader['time'] === 0 || leader['time'] < now) {
                // 切换领舞

                // 当前领舞人
                let leaderIndex = adminList.indexOf(leader['name'])
                let newLeader
                if (leaderIndex == -1) {
                    newLeader = adminList[0]
                } else {
                    let newIndex = leaderIndex + 1
                    if (newIndex >= adminList.length) {
                        newIndex = 0
                    }
                    newLeader = adminList[newIndex]
                }

                setLeader(newLeader, leaderTime)
            }
        }
    }

    // custom.js中 每条弹幕的处理 放到了此处
    // -------------------- 每条弹幕处理 begin -----------------------
    let random1 = data.uid in uidList ? 1 : 0
    let random2 = Math.floor(Math.random() + 0.5)

    // 获取领舞信息
    let leaderInfo = localStorage.getItem('leader')

    let isLeader = data.uname == leaderInfo ? 1 : 0
    // 给弹幕加上随机事件
    let mathIndex = Math.floor(Math.random()*15)
    console.log(mathIndex, '随机因子')
    let randomEvent = eventTextList[mathIndex] ? eventTextList[mathIndex] : ''
     // TODO 测试后 删除弹幕随机附加事件
    let dm = {text: data.danmaku, uid: data.uid, uname: data.uname, 
        event: getEvent(getFirstEventKeyword(data.danmaku+randomEvent)), 
        is_new: random1, is_admin: 0, is_exit: random2, is_leader: isLeader}

    // TODO 测试后 删除领舞随机
    let leaderRandomEvent = getEvent(getFirstEventKeyword(data.danmaku+randomEvent))
    let leader = {
        uid: 0, uname: leaderInfo, text: getEvent(getFirstEventKeyword(data.danmaku+randomEvent)), event: leaderRandomEvent
    }
    if (isLeader) {
        leader.uid = dm.uid
        leader.uname = dm.uname
        leader.text = dm.text
        leader.event = dm.event
    }

    console.log(dm, '弹幕')
    console.log(leader, '当前领舞')
    console.log(leaderRandomEvent, '领舞随机事件')


    let actionIndex = Math.floor(Math.random()*actionArr.length);
    let moveIndex = Math.floor(Math.random()*moveArr.length);
    peopleObj(dm.uname,dm.text,actionArr[actionIndex],moveArr[moveIndex]);
    num++;

    $('.lingname').text(leader.uname);
    if(leader.event=='scale-left' || leader.event=='scale-right' || leader.event=='scale-bottom-left' || leader.event=='scale-bottom-right'){
        $('.ground-bg').addClass(leader.event);
    } else {
        setTimeout(()=>{
            console.log(leader.event);
            // 显示领舞说话
            if (leader.text.length>0) {
                $('.speak-pink').text(leader.text);
                $('.speak-pink').fadeIn();
            }
            setTimeout(()=>{//关闭领舞说话
                $('.speak-pink').fadeOut();
            },3000) 
            allDancing(leader.event);
        },3000)
    }

    // -------------------- 每条弹幕处理 end -----------------------

    // event.source 就当前弹出页的来源页面
    // event.data 是 "hello there!"

    // 假设你已经验证了所受到信息的origin (任何时候你都应该这样做), 一个很方便的方式就是把event.source
    // 作为回信的对象，并且把event.origin作为targetOrigin
    // event.source.postMessage("hi there yourself!  the secret response " +
    // 						"is: rheeeeet!",
    // 					event.origin);

    // 数据是否为空
    // 弹幕类型判断 事件弹幕、内容弹幕
    
}

window.addEventListener("message", receiveMessage, false);