708 lines
29 KiB
JavaScript
708 lines
29 KiB
JavaScript
/**
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* danmaku.js — NicoNico/弾幕-style flying comments for v0ck
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*
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* Usage:
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* const d = new Danmaku(playerEl, videoEl);
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* d.load(commentsArray); // feed comments from API
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* d.fire('hello!', 'user', '#f0f'); // fire one immediately
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* d.toggle(); // toggle on/off
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* d.destroy(); // cleanup
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*/
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(function () {
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const PILL_MIN_MS = 6000; // Fastest a pill can cross the screen
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const PILL_MAX_MS = 12000; // Slowest a pill can cross the screen
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const LANE_COUNT = 10; // Vertical lane slots
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const LOOKAHEAD_SEC = 0.25; // How far ahead of currentTime we look when scanning
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const MIN_RANDOM_SECS = 2; // Random timecode lower bound (avoid very start)
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const RANDOM_SPREAD = 0.85; // Use 85% of duration for random spread
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/**
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* SyntheticClock — emulates a <video> element's time API for non-video items
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* (Flash/Ruffle). Ticks at 4 Hz so Danmaku's timeupdate handler fires normally.
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*/
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class SyntheticClock {
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constructor() {
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this._currentTime = 0;
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this._paused = false;
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this._listeners = { timeupdate: [], seeked: [] };
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this._timer = this._startTimer();
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}
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_startTimer() {
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return setInterval(() => {
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if (this._paused) return;
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this._currentTime += 0.25;
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this._listeners.timeupdate.forEach(fn => fn());
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}, 250);
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}
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get currentTime() { return this._currentTime; }
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get duration() { return Infinity; }
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get paused() { return this._paused; }
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pause() {
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// For Flash/Ruffle: never pause the clock — let pills and time advance freely.
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// Ruffle's is_playing is unreliable and would stall danmaku if respected.
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this._paused = true;
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}
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resume() {
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this._paused = false;
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}
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addEventListener(type, fn, opts) {
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if (this._listeners[type]) this._listeners[type].push(fn);
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}
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removeEventListener(type, fn) {
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if (this._listeners[type])
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this._listeners[type] = this._listeners[type].filter(f => f !== fn);
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}
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/** Reset the clock to zero (used for looping in Flash/Ruffle mode). */
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reset() {
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this._currentTime = 0;
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this._listeners.seeked.forEach(fn => fn());
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}
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destroy() { clearInterval(this._timer); }
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}
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class Danmaku {
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/**
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* @param {HTMLElement} playerEl — the .v0ck wrapper element
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* @param {HTMLVideoElement|HTMLAudioElement} mediaEl — the <video> or <audio>
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*/
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constructor(playerEl, mediaEl) {
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this.player = playerEl;
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this.media = mediaEl;
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this._synthClock = (mediaEl instanceof SyntheticClock) ? mediaEl : null;
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this.overlay = null;
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this.items = [];
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this._lastTime = -1;
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this._paused = false;
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this._laneUntil = new Array(LANE_COUNT).fill(0);
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// Site-wide config default
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const configDefault = (window.f0ckSession && window.f0ckSession.enable_danmaku !== undefined)
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? !!window.f0ckSession.enable_danmaku
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: true;
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// User preference
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const savedPref = localStorage.getItem('danmaku');
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if (savedPref !== null) {
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// User has explicitly chosen ON or OFF in the past
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this._enabled = savedPref !== 'false';
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} else {
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// No user preference yet — use the site-wide factory default
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this._enabled = configDefault;
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}
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this._bound_onTime = this._onTimeUpdate.bind(this);
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this._bound_onSeek = this._onSeeked.bind(this);
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this._bound_onPause = this._onPause.bind(this);
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this._bound_onPlay = this._onPlay.bind(this);
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// Own emoji cache — populated via CommentSystem, event, or independent fetch
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this._emojiCache = {};
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this._initEmojiCache();
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this._createOverlay();
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this.media.addEventListener('timeupdate', this._bound_onTime, { passive: true });
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this.media.addEventListener('seeked', this._bound_onSeek, { passive: true });
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this.media.addEventListener('pause', this._bound_onPause, { passive: true });
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this.media.addEventListener('play', this._bound_onPlay, { passive: true });
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// For Ruffle/SyntheticClock: no poller needed — clock runs freely
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}
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/**
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* Initialise the emoji cache from whichever source resolves first:
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* 1. CommentSystem.emojiCache already populated (fast path — browser was already on a page)
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* 2. f0ck:emojis_ready event (CommentSystem finishes loading after us)
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* 3. Independent fetch (Ruffle/Flash items where CommentSystem may never fire the event)
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*/
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_initEmojiCache() {
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// Fast path: CommentSystem already populated (AJAX nav / second page view)
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const tryCs = () => {
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const cs = (typeof CommentSystem !== 'undefined') ? CommentSystem.emojiCache : null;
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return (cs && Object.keys(cs).length > 0) ? cs : null;
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};
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const cs0 = tryCs();
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if (cs0) { this._emojiCache = cs0; return; }
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// Listen for CommentSystem's own event
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this._bound_onEmojis = (e) => {
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const map = e.detail || tryCs() || {};
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if (map && Object.keys(map).length > 0) {
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this._emojiCache = map;
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this._reRenderEmojis();
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}
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};
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window.addEventListener('f0ck:emojis_ready', this._bound_onEmojis);
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// Aggressive retry: try every 500 ms for up to 30 attempts.
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// Each attempt checks CommentSystem first (free), then falls back to a fetch.
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let attempts = 0;
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let fetched = false;
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const retry = () => {
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if (this._emojiCache && Object.keys(this._emojiCache).length > 0) return; // already got them
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if (++attempts > 30) return;
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// 1. CommentSystem populated by now?
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const cs = tryCs();
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if (cs) {
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this._emojiCache = cs;
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this._reRenderEmojis();
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return;
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}
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// 2. Kick off the HTTP fetch once; then just wait for it / the event
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if (!fetched) {
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fetched = true;
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fetch('/api/v2/emojis')
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.then(r => {
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if (!r.ok) throw new Error(`emoji fetch ${r.status}`);
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return r.json();
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})
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.then(data => {
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if (!data.success || !Array.isArray(data.emojis)) return;
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const map = {};
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data.emojis.forEach(e => { map[e.name] = e.url; });
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if (Object.keys(map).length > 0) {
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this._emojiCache = map;
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this._reRenderEmojis();
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}
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})
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.catch(err => {
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console.warn('[Danmaku] emoji fetch failed:', err.message);
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fetched = false; // allow retry
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});
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}
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// Schedule next check
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if (!this._destroyed) setTimeout(retry, 500);
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};
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setTimeout(retry, 200); // first attempt after a short grace window
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}
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// ── Public API ────────────────────────────────────────────────────────────
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/**
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* Load (or reload) comments. Comments with video_time=null get a random time.
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* @param {Array} comments — raw comment objects from /api/comments
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*/
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load(comments) {
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if (!Array.isArray(comments) || comments.length === 0) return;
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const duration = this.media.duration;
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const hasDuration = isFinite(duration) && duration > 0;
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// Build the prepared item list
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const mapped = comments
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.filter(c => !c.is_deleted && c.content)
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.map(c => ({
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text: this._prepareText(c.content),
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username: c.display_name || c.username || '?',
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color: c.username_color || null,
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raw_time: (c.video_time != null) ? parseFloat(c.video_time) : null,
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fired: false,
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video_time: 0
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}));
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if (this._synthClock) {
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// Flash/Ruffle mode: bypass the timeline entirely.
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// Store pool and start the random continuous loop.
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this._flashPool = mapped;
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this._startFlashLoop();
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return; // don't touch this.items / _lastTime
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}
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// Normal video mode: use video_time, random spread for nulls
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this.items = mapped.map(item => {
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if (item.raw_time !== null) {
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item.video_time = item.raw_time;
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} else if (hasDuration) {
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const spread = duration * RANDOM_SPREAD;
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item.video_time = MIN_RANDOM_SECS + Math.random() * Math.max(0, spread - MIN_RANDOM_SECS);
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} else {
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item.video_time = MIN_RANDOM_SECS + Math.random() * 598;
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}
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return item;
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}).sort((a, b) => a.video_time - b.video_time);
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this._resetFiredState(this.media.currentTime);
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this._lastTime = this.media.currentTime;
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}
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/**
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* Random continuous loop for Flash/Ruffle.
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* Fires one comment every 2-5 s (random), reshuffles pool on exhaustion.
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*/
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_startFlashLoop() {
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// Cancel any previous loop
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if (this._flashTimer) clearTimeout(this._flashTimer);
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this._flashTimer = null;
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if (!this._flashPool || this._flashPool.length === 0) return;
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// Shuffle helper
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const shuffle = arr => {
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for (let i = arr.length - 1; i > 0; i--) {
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const j = Math.floor(Math.random() * (i + 1));
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[arr[i], arr[j]] = [arr[j], arr[i]];
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}
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return arr;
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};
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// Working queue — randomised copy of pool
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let queue = shuffle([...this._flashPool]);
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let idx = 0;
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const tick = () => {
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if (this._destroyed || !this._enabled) return;
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// Refill and reshuffle when queue exhausted
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if (idx >= queue.length) {
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queue = shuffle([...this._flashPool]);
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idx = 0;
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}
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const item = queue[idx++];
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this._spawnPill(item.text, item.username, item.color);
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// Random delay 2 – 5 seconds between pills
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const delay = 2000 + Math.random() * 3000;
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this._flashTimer = setTimeout(tick, delay);
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};
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// Small initial delay so page finishes loading before first pill
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this._flashTimer = setTimeout(tick, 800);
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}
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/**
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* Immediately fire a single comment pill (e.g. user's own new comment).
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*/
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fire(text, username, color) {
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if (!this._enabled) return;
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this._spawnPill(this._prepareText(text), username, color);
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}
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/**
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* Add a new comment to the timeline so it loops back in future playback.
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* Also fires it immediately as a one-shot pill.
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* @param {Object} comment — raw comment object from API
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*/
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addItem(comment) {
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if (!comment || !comment.content) return;
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const duration = this.media.duration;
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const hasDuration = isFinite(duration) && duration > 0;
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let t = (comment.video_time != null) ? parseFloat(comment.video_time) : null;
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if (t === null) {
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const now = this.media.currentTime || 0;
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if (hasDuration) {
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const remaining = duration - now;
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const spread = Math.max(remaining * 0.9, MIN_RANDOM_SECS);
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t = now + MIN_RANDOM_SECS + Math.random() * spread;
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if (t > duration) t = MIN_RANDOM_SECS + Math.random() * duration * RANDOM_SPREAD;
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} else {
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t = (this.media.currentTime || 0) + MIN_RANDOM_SECS + Math.random() * 300;
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}
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}
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const item = {
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video_time: t,
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text: this._prepareText(comment.content),
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username: comment.display_name || comment.username || '?',
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color: comment.username_color || null,
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fired: true // mark as already fired — caller handles any immediate one-shot
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};
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// Insert in sorted order
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const idx = this.items.findIndex(i => i.video_time > t);
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if (idx === -1) this.items.push(item);
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else this.items.splice(idx, 0, item);
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}
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/** Toggle danmaku on/off. */
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toggle() {
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this._enabled = !this._enabled;
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localStorage.setItem('danmaku', this._enabled ? 'true' : 'false');
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this.overlay.style.display = this._enabled ? '' : 'none';
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// Update the switch if it exists in the player
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const sw = this.player.querySelector('#toggledanmaku');
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if (sw) sw.classList.toggle('active', this._enabled);
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}
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setEnabled(val) {
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if (this._enabled === !!val) return;
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this.toggle();
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}
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isEnabled() { return this._enabled; }
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destroy() {
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this._destroyed = true;
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this.media.removeEventListener('timeupdate', this._bound_onTime);
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this.media.removeEventListener('seeked', this._bound_onSeek);
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this.media.removeEventListener('pause', this._bound_onPause);
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this.media.removeEventListener('play', this._bound_onPlay);
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if (this._bound_onEmojis) window.removeEventListener('f0ck:emojis_ready', this._bound_onEmojis);
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if (this._rufflePoller) clearInterval(this._rufflePoller);
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if (this._flashTimer) clearTimeout(this._flashTimer);
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if (this._synthClock) this._synthClock.destroy();
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if (this.overlay && this.overlay.parentNode) this.overlay.parentNode.removeChild(this.overlay);
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this.overlay = null;
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}
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// ── Private ───────────────────────────────────────────────────────────────
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_createOverlay() {
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this.overlay = document.createElement('div');
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this.overlay.className = 'danmaku-overlay';
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if (!this._enabled) this.overlay.style.display = 'none';
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this.player.appendChild(this.overlay);
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}
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_onPause() {
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this._paused = true;
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if (this._synthClock) this._synthClock.pause();
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// Do NOT pause pill animations — pills already in flight always complete.
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}
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_onPlay() {
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this._paused = false;
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if (this._synthClock) this._synthClock.resume();
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// Nothing to do for in-flight pills — they were never paused.
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}
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_checkRuffleState() {
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const rp = document.querySelector('ruffle-player, ruffle-object');
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if (!rp) return;
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// Ruffle exposes is_playing on the element
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const isPlaying = rp.is_playing !== undefined ? !!rp.is_playing : true;
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if (isPlaying && this._paused) this._onPlay();
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if (!isPlaying && !this._paused) this._onPause();
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}
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_onTimeUpdate() {
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if (this._paused) return;
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const now = this.media.currentTime;
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if (!this._enabled || this.items.length === 0) { this._lastTime = now; return; }
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const prev = this._lastTime;
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this._lastTime = now;
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// Detect video loop (time jumped backwards) — reset so comments fire again
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if (now < prev - 0.5) {
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this._resetFiredState(now);
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return;
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}
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const from = prev;
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const to = now + LOOKAHEAD_SEC;
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for (const item of this.items) {
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if (item.fired) continue;
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if (item.video_time < from) { item.fired = true; continue; } // already passed
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if (item.video_time > to) break; // sorted, nothing further in range
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item.fired = true;
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this._spawnPill(item.text, item.username, item.color);
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}
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// Loop for SyntheticClock (Flash/Ruffle): once all items have fired, restart
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if (this._synthClock && this.items.length > 0 && this.items.every(i => i.fired)) {
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this._loopSynth();
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}
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}
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/** Reset all fired flags and the synthetic clock for looping. */
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_loopSynth() {
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this.items.forEach(i => { i.fired = false; });
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this._synthClock.reset(); // back to t=0
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this._lastTime = 0;
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}
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_onSeeked() {
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this._resetFiredState(this.media.currentTime);
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this._lastTime = this.media.currentTime;
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}
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_resetFiredState(currentTime) {
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for (const item of this.items) {
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item.fired = item.video_time < currentTime - LOOKAHEAD_SEC;
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}
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}
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_pickLane() {
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const now = Date.now();
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// Find the lane that will be free soonest
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let best = 0;
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let bestFree = this._laneUntil[0];
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for (let i = 1; i < LANE_COUNT; i++) {
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if (this._laneUntil[i] < bestFree) {
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bestFree = this._laneUntil[i];
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best = i;
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}
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}
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// Occupy the lane — use the max duration so slower pills don't get overwritten
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this._laneUntil[best] = now + PILL_MAX_MS;
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return best;
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}
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_spawnPill(text, username, color) {
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if (!this.overlay || !this._enabled || this._paused) return;
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const pill = document.createElement('div');
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pill.className = 'danmaku-pill';
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// Lane assignment — distribute vertically to avoid full overlap
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const lane = this._pickLane();
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const laneH = 100 / LANE_COUNT;
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const topPct = lane * laneH + (laneH * 0.1); // slight inset
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pill.style.top = topPct + '%';
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// Message content — store raw text for deferred emoji re-render
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const msg = document.createElement('span');
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msg.className = 'dpill-text';
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msg.dataset.rawText = text;
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// Read the freshest emoji source available at spawn time
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const liveCache = (this._emojiCache && Object.keys(this._emojiCache).length > 0)
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? this._emojiCache
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: ((typeof CommentSystem !== 'undefined' && CommentSystem.emojiCache) || null);
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if (liveCache && liveCache !== this._emojiCache) this._emojiCache = liveCache;
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msg.appendChild(this._renderContent(text));
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// Track pill for deferred re-render if emojis weren't ready yet
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if (!this._emojiCache || Object.keys(this._emojiCache).length === 0) {
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if (!this._pendingPills) this._pendingPills = new Set();
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this._pendingPills.add(msg);
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}
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pill.appendChild(msg);
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// Insert paused so we can measure before animation fires
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this.overlay.appendChild(pill);
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// Duration scales with text length so long comments get enough time to cross.
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// Formula: 5s base + 25ms per character, clamped to [6s, 45s].
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const charCount = text.length;
|
||
const duration = Math.min(Math.max(5000 + charCount * 25, PILL_MIN_MS), 45_000);
|
||
|
||
// Use actual scroll (content) width — wider than offsetWidth for very long lines.
|
||
// This ensures the animation pixel travel is enough for ALL content to exit left,
|
||
// not just the max-width-capped pill box.
|
||
const overlayW = this.overlay.offsetWidth || window.innerWidth || 1920;
|
||
const contentW = pill.scrollWidth || pill.offsetWidth || 200;
|
||
const startX = overlayW + contentW; // off-screen right
|
||
const endX = -(contentW + 200); // fully off-screen left, overflow included
|
||
|
||
const anim = pill.animate(
|
||
[
|
||
{ transform: `translateX(${startX}px)` },
|
||
{ transform: `translateX(${endX}px)` }
|
||
],
|
||
{ duration, easing: 'linear', fill: 'none' }
|
||
);
|
||
|
||
// Remove pill once animation completes
|
||
anim.addEventListener('finish', () => {
|
||
if (pill.parentNode) pill.parentNode.removeChild(pill);
|
||
}, { once: true });
|
||
|
||
// Failsafe in case the Animations API finish event doesn't fire
|
||
pill._timeoutId = setTimeout(() => { if (pill.parentNode) pill.parentNode.removeChild(pill); }, duration + 1000);
|
||
}
|
||
|
||
/** Re-render pending pills once emojis are available. */
|
||
_reRenderEmojis() {
|
||
if (!this.overlay) return;
|
||
// Prefer direct element tracking (fast, no DOM query needed)
|
||
const pending = this._pendingPills;
|
||
if (pending && pending.size > 0) {
|
||
pending.forEach(msg => {
|
||
if (!msg.parentNode) { pending.delete(msg); return; } // already removed
|
||
const raw = msg.dataset.rawText;
|
||
if (!raw) return;
|
||
msg.textContent = '';
|
||
msg.appendChild(this._renderContent(raw));
|
||
});
|
||
pending.clear();
|
||
}
|
||
// Also sweep any pills that slipped through (belt-and-suspenders)
|
||
this.overlay.querySelectorAll('.dpill-text[data-raw-text]').forEach(msg => {
|
||
const raw = msg.dataset.rawText;
|
||
if (!raw) return;
|
||
// Only re-render if the content is still plain text (no img children)
|
||
if (!msg.querySelector('img.dpill-emoji')) {
|
||
msg.textContent = '';
|
||
msg.appendChild(this._renderContent(raw));
|
||
}
|
||
});
|
||
}
|
||
|
||
/**
|
||
* Build a DocumentFragment from raw comment text.
|
||
* Handles [spoiler], [blur], :emoji:, and >greentext lines.
|
||
*/
|
||
_renderContent(rawText) {
|
||
if (!rawText) return document.createDocumentFragment();
|
||
|
||
const prepared = this._prepareText(rawText);
|
||
const frag = document.createDocumentFragment();
|
||
const cache = this._emojiCache; // always use full cache in danmaku
|
||
|
||
// Process line by line — leading > lines become greentext
|
||
// Filter empty lines to avoid ghost rows from trailing newlines
|
||
const lines = prepared.split('\n').filter(l => l.trim() !== '');
|
||
lines.forEach((line) => {
|
||
const isQuote = /^>\s?/.test(line);
|
||
const text = isQuote ? '> ' + line.replace(/^>\s?/, '') : line;
|
||
|
||
const span = document.createElement('span');
|
||
span.className = isQuote ? 'dpill-greentext' : 'dpill-line';
|
||
this._renderInline(text, span, cache);
|
||
frag.appendChild(span);
|
||
});
|
||
|
||
return frag;
|
||
}
|
||
|
||
/**
|
||
* Renders inline content (spoiler/blur/emoji) into a parent node.
|
||
* Prepends a space before the first text chunk for visual separation.
|
||
*/
|
||
_renderInline(text, parent, emojiCache) {
|
||
// match[1]=spoiler, match[2]=blur, match[3]=emoji, match[4]=inline-img-url
|
||
const combined = /\[spoiler\]([\s\S]*?)\[\/spoiler\]|\[blur\]([\s\S]*?)\[\/blur\]|:([a-z0-9_+\-]+):|\x04([^\x05]+)\x05/gi;
|
||
let lastIndex = 0;
|
||
let match;
|
||
|
||
while ((match = combined.exec(text)) !== null) {
|
||
if (match.index > lastIndex) {
|
||
parent.appendChild(document.createTextNode(text.slice(lastIndex, match.index)));
|
||
}
|
||
|
||
if (match[1] !== undefined) {
|
||
const span = document.createElement('span');
|
||
span.className = 'dpill-spoiler';
|
||
span.title = 'Click to reveal spoiler';
|
||
span.addEventListener('click', (e) => { e.stopPropagation(); span.classList.toggle('revealed'); });
|
||
this._renderInline(match[1], span, emojiCache); // recursive so emojis inside spoilers work
|
||
parent.appendChild(span);
|
||
} else if (match[2] !== undefined) {
|
||
const span = document.createElement('span');
|
||
span.className = 'dpill-blur';
|
||
span.title = 'Click to reveal';
|
||
span.addEventListener('click', (e) => { e.stopPropagation(); span.classList.toggle('revealed'); });
|
||
this._renderInline(match[2], span, emojiCache); // recursive so emojis inside blur work
|
||
parent.appendChild(span);
|
||
} else if (match[3]) {
|
||
const code = match[3];
|
||
const url = emojiCache[code];
|
||
if (url) {
|
||
const img = document.createElement('img');
|
||
img.src = url;
|
||
img.alt = `:${code}:`;
|
||
img.className = 'dpill-emoji';
|
||
parent.appendChild(img);
|
||
} else {
|
||
parent.appendChild(document.createTextNode(match[0]));
|
||
}
|
||
} else if (match[4]) {
|
||
const mediaUrl = match[4];
|
||
const isConvertedGif = mediaUrl.endsWith('#gif');
|
||
const cleanUrl = mediaUrl.replace(/#gif$/, '');
|
||
const videoExts = /\.(?:mp4|webm|ogv|mov)$/i;
|
||
const audioExts = /\.(?:mp3|ogg|wav|flac|aac|opus|m4a)$/i;
|
||
|
||
if (videoExts.test(cleanUrl)) {
|
||
const vid = document.createElement('video');
|
||
vid.src = cleanUrl;
|
||
vid.className = 'dpill-video';
|
||
vid.muted = true;
|
||
vid.loop = true;
|
||
vid.autoplay = true;
|
||
vid.playsInline = true;
|
||
vid.play().catch(() => { vid.addEventListener('canplay', () => vid.play().catch(() => {}), { once: true }); });
|
||
parent.appendChild(vid);
|
||
} else if (audioExts.test(cleanUrl)) {
|
||
const span = document.createElement('span');
|
||
span.className = 'dpill-audio';
|
||
span.textContent = '🔊 ';
|
||
parent.appendChild(span);
|
||
} else {
|
||
const img = document.createElement('img');
|
||
img.src = cleanUrl;
|
||
img.className = 'dpill-img';
|
||
parent.appendChild(img);
|
||
}
|
||
}
|
||
|
||
lastIndex = match.index + match[0].length;
|
||
}
|
||
|
||
if (lastIndex < text.length) {
|
||
parent.appendChild(document.createTextNode(text.slice(lastIndex)));
|
||
}
|
||
}
|
||
|
||
/** Strips markdown and character limits; preserves > and newlines for _renderContent. */
|
||
_prepareText(text) {
|
||
if (!text) return '';
|
||
|
||
// Protect emoji codes from the bold/italic underscore regex.
|
||
// e.g. `:dance_fart: :dance_fart:` would have its underscores eaten
|
||
// when the regex pairs the _ from the first code with the _ in the second.
|
||
const emojiTokens = [];
|
||
let protected_ = text.replace(/:([a-z0-9_+\-]+):/gi, (match) => {
|
||
emojiTokens.push(match);
|
||
return `\x02${emojiTokens.length - 1}\x03`; // private-use delimiters
|
||
});
|
||
|
||
// Tokenize image URLs with \x04URL\x05 so they survive all regexes and reach _renderInline
|
||
// Only embed images from the allowed-images allowlist (window.f0ckAllowedImages) or same site
|
||
const allowedHosts = Array.isArray(window.f0ckAllowedImages) ? window.f0ckAllowedImages : [];
|
||
const siteHost = window.location.hostname;
|
||
const isAllowedImg = (url) => {
|
||
try {
|
||
const h = new URL(url).hostname;
|
||
return h === siteHost || allowedHosts.some(a => h === a || h.endsWith('.' + a));
|
||
} catch { return false; }
|
||
};
|
||
const imgTokenUrls = [];
|
||
protected_ = protected_
|
||
// Tokenize relative /c/ media URLs (comment attachments)
|
||
.replace(/\/c\/[a-f0-9]+\.(?:png|jpg|jpeg|gif|webp|svg|avif|mp4|webm|ogv|mov|mp3|ogg|wav|flac|aac|opus|m4a)(?:#gif)?/gi, (url) => {
|
||
imgTokenUrls.push(url);
|
||
return `\x04${imgTokenUrls.length - 1}\x05`;
|
||
})
|
||
// Stop at protocol boundaries so concatenated URLs aren't merged into one broken src.
|
||
.replace(/https?:\/\/(?:(?!https?:\/\/)\S)+\.(?:png|jpg|jpeg|gif|webp|svg|avif)(\?(?:(?!https?:\/\/)\S)*)?/gi, (url) => {
|
||
if (!isAllowedImg(url)) return url; // disallowed image URLs stay as plain text
|
||
imgTokenUrls.push(url);
|
||
return `\x04${imgTokenUrls.length - 1}\x05`; // numeric index placeholder
|
||
})
|
||
.replace(/```[\s\S]*?```/g, '[code]')
|
||
.replace(/`[^`]+`/g, match => match.slice(1, -1))
|
||
.replace(/!\[[^\]]*\]\([^)]+\)/g, '[img]')
|
||
.replace(/\[([^\]]+)\]\([^)]+\)/g, '$1')
|
||
.replace(/^#{1,6}\s+/gm, '')
|
||
.replace(/[*_]{1,3}([^*_]+)[*_]{1,3}/g, '$1')
|
||
// Normalize \r\n → \n but keep line breaks for greentext
|
||
.replace(/\r\n?/g, '\n')
|
||
// Collapse 3+ blank lines to 2
|
||
.replace(/\n{3,}/g, '\n\n')
|
||
.trim();
|
||
|
||
// Restore emoji codes, then image URL tokens
|
||
return protected_
|
||
.replace(/\x02(\d+)\x03/g, (_, i) => emojiTokens[+i] || '')
|
||
.replace(/\x04(\d+)\x05/g, (_, i) => imgTokenUrls[+i] ? `\x04${imgTokenUrls[+i]}\x05` : '');
|
||
}
|
||
}
|
||
|
||
window.Danmaku = Danmaku;
|
||
window.SyntheticClock = SyntheticClock;
|
||
|
||
})();
|