// ==UserScript==
// @name bilibili弹幕列表实时滚动播放
// @namespace https://eyesblog.gitee.io
// @version 1.0.1
// @description 在B站看视频时弹幕一多就会遮住内容，可我又想看视频又想看弹幕，就写了这个脚本，安装后右侧的弹幕列表会随视频播放而滚动
// @author eyes++
// @match https://www.bilibili.com/video/*
// @require https://cdn.staticfile.org/jquery/3.5.0/jquery.min.js
// @grant none
// ==/UserScript==
(function () {
'use strict';
// 允许跨域请求，防止浏览器拦截
let meta = document.createElement("meta");
meta.httpEquiv = "Access-Control-Allow-Origin";
meta.content = "*";
$("head")[0].appendChild(meta);
// 初始化若干变量
let page_loc = location.href;
let page_start = page_loc.indexOf("?p=");
let page_p;
// 获取视频cid
if (page_start == -1 || page_start == 1) page_p = 0;
else page_p = page_loc.slice(page_start + 3) - 1;
let page_cid = window.__INITIAL_STATE__.videoData.pages[page_p].cid;
// 发起请求，拿到弹幕数据
$.ajax({
url: "https://api.bilibili.com/x/v1/dm/list.so?oid=" + page_cid,
type: "GET",
dataType: "XML",
success: function (xml) {
// 处理返回数据
data_deal(xml.all);
},
error: function (err) {
console.log("弹幕列表滚动脚本报错:", err);
alert("弹幕列表滚动脚本失效，可尝试更新最新版本脚本解决问题！\n如果有一定编程基础可以打开控制台查看报错信息。");
}
});
// 存储数据
let data_deal = data => {
let data_list = new Array(); // 存时间信息
let data_arr = new Array(); // 存内容
let data_length = data.length;
for (var i = 8; i < data_length; i++) {
let data_array = data[i].attributes.p.value.split(",");
data_array.splice(5, 4);
data_array.splice(1, 3);
$.each(data_array, function (i) {
data_array[i] = parseFloat(data_array[i]); // 转换类型，便于排序
})
data_list.push(data_array);
data_arr.push(data[i].innerHTML);
}
// 执行排序
data_sort(data_list, 0, data_length - 9, data_arr);
// 修改弹幕列表
let clear = setInterval(() => {
if ($(".bui-collapse-header")[0]) { // 等待弹幕列表加载出来
clearInterval(clear);
$(".bui-collapse-header").click(() => {
let clearInter = setInterval(function () {
if ($(".player-auxiliary-danmaku-load-status").css("display") == "none") { // 等待弹幕数据加载出来
clearInterval(clearInter);
list_change(data_list, data_arr); // 然后开始修改列表
}
}, 100);
})
}
}, 100)
}
// 数据排序(快排算法)
let data_sort = (data_list, l, r, data_arr) => {
if (l < r) {
let i = l,
j = r,
temp = data_list[l],
t1, t2, t3;
while (i < j) {
while (i < j && data_list[j][0] >= temp[0]) j--;
while (i < j && data_list[i][0] <= temp[0]) i++;
if (i < j) {
t1 = data_list[i];
data_list[i] = data_list[j];
data_list[j] = t1;
t2 = data_arr[i];
data_arr[i] = data_arr[j];
data_arr[j] = t2;
}
}
data_list[l] = data_list[i];
data_list[i] = temp;
t3 = data_arr[l];
data_arr[l] = data_arr[i];
data_arr[i] = t3;
data_sort(data_list, l, i - 1, data_arr);
data_sort(data_list, i + 1, r, data_arr);
}
}
// 查找
let danmaku_search = (arr, time) => {
try {
arr.forEach((v, i) => {
if (v[0] - time >= 0 && v[0] - time < 1) throw new Error(String(i));
if (v[0] - time > 1) throw new Error(i);
});
} catch (e) {
return e.message;
}
return -1;
}
// 时间格式转换(分转秒)
let time_m_s = a => {
if (a.length == 2) return a[0] * 60 + a[1];
else return a[0] * 3600 + a[1] * 60 + a[2];
}
// 时间格式转换(秒转分)
let time_s_m = a => {
a = Math.floor(a);
let m = Math.floor(a / 60);
let s = (a - Math.floor(a / 60) * 60);
if (m < 0) m = "00";
else if (m < 10) m = "0" + String(m);
if (s < 10) s = "0" + String(s);
return m + ":" + s;
}
// 发送日期格式转换
let data_s_d = a => {
let date = new Date(a * 1000);
let M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-';
let D = date.getDate();
if (D < 10) D = "0" + String(D) + ' ';
else D = D + ' ';
let h = date.getHours();
if (h < 10) h = "0" + String(h) + ":";
else if (h == 0) h = "00" + ":";
else h = h + ":";
let m = date.getMinutes();
if (m < 10) m = "0" + String(m);
else if (m == 0) m = "00";
return M + D + h + m;
}
// 获取当前视频播放秒数
let get_now_s = () => {
let time_now = $('.bilibili-player-video-time-now')[0].innerHTML.split(":");
$.each(time_now, function (i) {
time_now[i] = parseInt(time_now[i]);
})
return time_m_s(time_now);
}
let list_change = (data_list, data_arr) => {
// 修改页面控制
$(".player-auxiliary-danmaku-btn-time").removeAttr("orderby");
$(".player-auxiliary-danmaku-btn-danmaku").removeAttr("orderby");
$(".player-auxiliary-danmaku-btn-date").removeAttr("orderby");
$(".player-auxiliary-danmaku-function > .player-auxiliary-danmaku-btn-danmaku")[0].innerHTML = "滚动弹幕(共" + data_arr.length + "条)";
// 破坏初始列表结构
$(".player-auxiliary-danmaku-wrap > .player-auxiliary-danmaku-contaner").removeClass("player-auxiliary-danmaku-contaner player-auxiliary-bscrollbar");
$(".player-auxiliary-danmaku-wrap").off();
$(".player-auxiliary-danmaku-wrap > div > ul").off();
// 监听视频播放
let danmaku_length = $(".player-auxiliary-danmaku-wrap > div > ul > li").length; // 获取当前展示的弹幕数量
let li_width = $(".player-auxiliary-danmaku-wrap > div > ul > li").css("width"); // 列表宽度
let isChange = $(".bilibili-player-video-time-now")[0].innerHTML;
let data_length = data_list.length;
// 开场进行一次排序
if (parseFloat($(".player-auxiliary-danmaku-wrap").css("height").replace("px", "")) >= parseFloat($(".player-auxiliary-danmaku-wrap > div > ul").css("height").replace("px", ""))) {
setInterval(() => {
if (isChange != $(".bilibili-player-video-time-now")[0].innerHTML) {
let now_i = danmaku_search(data_list, get_now_s()); // 获取即将播放的弹幕
if (now_i != -1) list_structure(data_list, data_arr, 0, danmaku_length - 1, now_i, li_width);
isChange = $(".bilibili-player-video-time-now")[0].innerHTML;
}
}, 1000);
} else {
setInterval(() => {
if (isChange != $(".bilibili-player-video-time-now")[0].innerHTML) {
// 获取列表首尾
let now_i = danmaku_search(data_list, get_now_s());
// 判断是否需要更新
if (now_i != -1 && parseInt(now_i) + danmaku_length - 15 >= data_length) list_structure(data_list, data_arr, data_length - danmaku_length, data_length - 1);
else if (now_i != -1) list_structure(data_list, data_arr, parseInt(now_i) - 7, parseInt(now_i) + danmaku_length - 8);
isChange = $(".bilibili-player-video-time-now")[0].innerHTML;
}
}, 1000);
}
// 开启与停止滚动控制
}
// 构建弹幕列表
let list_structure = (data_list, data_arr, start, end) => {
$(".player-auxiliary-danmaku-wrap > div > ul").empty(); // 清除先前的弹幕，重新构建
for (let i = start; i <= end; i++) {
let li = document.createElement("li");
let span1 = document.createElement("span");
let span2 = document.createElement("span");
let span3 = document.createElement("span");
let text1 = document.createTextNode(time_s_m(data_list[i][0]));
let text2 = document.createTextNode(data_arr[i]);
let text3 = document.createTextNode(data_s_d(data_list[i][1]));
span1.appendChild(text1);
span2.appendChild(text2);
span3.appendChild(text3);
$(span1).addClass("danmaku-info-time");
$(span2).addClass("danmaku-info-danmaku");
$(span3).addClass("danmaku-info-date");
li.appendChild(span1);
li.appendChild(span2);
li.appendChild(span3);
$(li).addClass("danmaku-info-row");
$(".player-auxiliary-danmaku-wrap > div > ul")[0].appendChild(li);
}
}
})();
