604 lines
26 KiB
JavaScript
604 lines
26 KiB
JavaScript
/**
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* Book Playback Timeline Module
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* Owns prepared WebGL book playback order: pagination, texture readiness,
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* reveal start, page-flip timing, and visual completion.
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*/
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import { BaseModule } from './base-module.js';
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class BookPlaybackTimelineModule extends BaseModule {
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constructor() {
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super('book-playback-timeline', 'Book Playback Timeline');
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this.dependencies = ['book-pagination', 'book-texture-renderer', 'webgl-page-cache', 'playback-coordinator'];
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this.pagination = null;
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this.textureRenderer = null;
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this.pageCache = null;
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this.playbackCoordinator = null;
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this.activeSegment = null;
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this.preparedSegments = new Map();
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this.timelineDiagnostics = [];
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this.benchmarkEntries = [];
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this.ownsPageFlipCommit = true;
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this.bindMethods([
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'initialize',
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'playSentence',
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'prepareSentence',
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'activatePreparedSegment',
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'ensureAnimationTimings',
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'calculateAnimationTiming',
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'createPreparedSegment',
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'createRevealDetail',
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'applyTexturePlan',
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'startRevealForSegment',
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'assertSegmentReady',
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'collectRequiredPageMetas',
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'requiresSpreadTransition',
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'requiresRightPageFlipAfterReveal',
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'getBlockRevealSides',
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'waitForVisualCompletion',
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'waitForRevealCommit',
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'requestPageFlip',
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'waitForPageFlipFinished',
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'prewarmSegmentTextures',
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'getPageMetaForIndex',
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'getVisibleSpreadIndex',
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'isChoiceAwaitingPlayer',
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'markBenchmark',
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'timeStage',
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'recordDiagnostic',
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'getRuntimeState'
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]);
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}
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async initialize() {
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this.pagination = this.getModule('book-pagination');
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this.textureRenderer = this.getModule('book-texture-renderer');
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this.pageCache = this.getModule('webgl-page-cache');
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this.playbackCoordinator = this.getModule('playback-coordinator');
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this.addEventListener(document, 'webgl-book:page-reveal-start', (event) => {
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this.markBenchmark('reveal-start', {
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blockId: event.detail?.blockId ?? null
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});
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});
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this.addEventListener(document, 'webgl-book:reveal-committed', (event) => {
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this.markBenchmark('reveal-committed', {
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blockId: event.detail?.blockIds?.[0] ?? null,
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side: event.detail?.side || null,
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pageFlipAfterReveal: event.detail?.pageFlipAfterReveal === true
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});
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});
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this.addEventListener(document, 'webgl-book:page-flip-started', (event) => {
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this.markBenchmark('flip-started', event.detail || {});
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});
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this.addEventListener(document, 'webgl-book:page-flip-finished', (event) => {
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this.markBenchmark('flip-finished', event.detail || {});
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});
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window.BookPlaybackTimeline = this;
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this.reportProgress(100, 'Book playback timeline ready');
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return true;
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}
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async playSentence(sentence = {}) {
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const segment = await this.timeStage('prepare-current', { blockId: sentence.blockId ?? null }, () => {
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return this.prepareSentence(sentence, { immediate: true });
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});
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if (!segment) {
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return this.playbackCoordinator?.play?.(sentence);
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}
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this.activeSegment = segment;
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this.recordDiagnostic('segment-play:start', segment);
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if (this.requiresSpreadTransition(segment)) {
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const flipped = await this.timeStage('preplay-flip', segment, () => this.requestPageFlip(1, {
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reason: 'timeline-preplay-spread-transition',
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targetSpread: segment.targetSpreadIndex,
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force: true
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}));
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if (!flipped) {
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this.pageCache?.recordProblem?.({
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type: 'timeline-preplay-flip-failed',
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blockId: segment.blockId,
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targetSpread: segment.targetSpreadIndex
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});
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}
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}
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await this.timeStage('activate', segment, () => this.activatePreparedSegment(segment, sentence));
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sentence.webglRevealController = () => this.startRevealForSegment(segment);
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const visualPromise = this.waitForVisualCompletion(segment);
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const playbackPromise = this.timeStage('playback', segment, () => {
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return this.playbackCoordinator?.play?.(sentence) || Promise.resolve();
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});
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await Promise.all([playbackPromise, visualPromise]);
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this.recordDiagnostic('segment-play:end', segment);
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if (this.activeSegment?.key === segment.key) this.activeSegment = null;
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return segment;
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}
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async prepareSentence(sentence = {}, options = {}) {
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if (!sentence || sentence.blockId == null || !this.pagination || !this.textureRenderer) return null;
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const key = `${sentence.gameId || sentence.metadata?.gameId || 'game'}:${sentence.blockId}`;
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const existing = sentence.webglBookPresentation?.timelineSegment || this.preparedSegments.get(key);
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if (existing && options.force !== true) return existing;
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this.ensureAnimationTimings(sentence);
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const segment = await this.timeStage(options.immediate === true ? 'segment-prepare-immediate' : 'segment-prepare-lookahead', {
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blockId: sentence.blockId,
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id: sentence.id
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}, () => this.createPreparedSegment(sentence, options));
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if (!segment) return null;
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this.preparedSegments.set(segment.key, segment);
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sentence.webglBookPresentation = {
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...(sentence.webglBookPresentation || {}),
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prepared: true,
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blockId: segment.blockId,
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spread: segment.previewSpread,
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timelineSegment: segment
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};
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this.recordDiagnostic('segment-prepare:end', segment);
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return segment;
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}
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async createPreparedSegment(sentence = {}, options = {}) {
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const previewSpread = sentence.webglBookPresentation?.spread || await this.pagination.preparePendingBlock(sentence, {
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activate: false,
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publish: false,
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includeUnrenderedHistory: true
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});
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if (!previewSpread) return null;
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const revealDetail = this.createRevealDetail(sentence, previewSpread, 'prepare');
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const texturePlan = this.textureRenderer.prepareRevealBlock(revealDetail, {
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phase: 'prepare',
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publishEvent: false
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});
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const targetSpreadIndex = Math.max(0, Number(previewSpread.index || 0));
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const currentSpreadIndex = this.getVisibleSpreadIndex();
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const revealSides = this.getBlockRevealSides(previewSpread, sentence.blockId);
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const segment = {
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key: `${sentence.gameId || sentence.metadata?.gameId || 'game'}:${sentence.blockId}`,
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id: sentence.id,
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blockId: sentence.blockId,
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sentence,
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previewSpread,
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targetSpreadIndex,
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currentSpreadIndex,
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revealSides,
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requiresPreFlip: targetSpreadIndex > currentSpreadIndex,
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requiresRightFlip: revealSides.includes('right') && this.requiresRightPageFlipAfterReveal(previewSpread),
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preparedTexturePlan: texturePlan,
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preparedAt: performance.now(),
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status: 'prepared'
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};
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this.applyTexturePlan(texturePlan, segment, 'prepare');
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await this.timeStage('texture-prewarm', segment, () => this.prewarmSegmentTextures(segment));
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await this.assertSegmentReady(segment, 'prepare');
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if (options.immediate !== true) {
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await new Promise(resolve => setTimeout(resolve, 0));
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}
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return segment;
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}
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async activatePreparedSegment(segment = {}, sentence = segment.sentence) {
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if (!segment || !sentence) return null;
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const activeSpread = await this.pagination.preparePendingBlock(sentence, {
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includeUnrenderedHistory: true
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});
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segment.activeSpread = activeSpread || segment.previewSpread;
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segment.targetSpreadIndex = Math.max(0, Number(segment.activeSpread?.index ?? segment.targetSpreadIndex ?? 0));
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segment.revealSides = this.getBlockRevealSides(segment.activeSpread || segment.previewSpread, sentence.blockId);
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segment.requiresRightFlip = segment.revealSides.includes('right')
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&& this.requiresRightPageFlipAfterReveal(segment.activeSpread || segment.previewSpread);
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const revealDetail = this.createRevealDetail(sentence, segment.activeSpread || segment.previewSpread, 'activate');
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const texturePlan = this.textureRenderer.prepareRevealBlock(revealDetail, {
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publishEvent: false
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});
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segment.activeTexturePlan = texturePlan;
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this.applyTexturePlan(texturePlan, segment, 'activate');
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await this.assertSegmentReady(segment, 'activate');
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segment.status = 'activated';
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this.recordDiagnostic('segment-activate:end', segment);
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return segment.activeSpread;
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}
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ensureAnimationTimings(sentence = {}) {
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if (Array.isArray(sentence.animation?.wordTimings) && sentence.animation.wordTimings.length > 0) return;
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const words = String(sentence.layoutText || sentence.text || '').match(/\S+/g) || [];
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sentence.animation = this.calculateAnimationTiming(words, sentence.tts?.duration || 0, sentence.cueMarkers || []);
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}
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calculateAnimationTiming(words = [], totalDuration = 0, cueMarkers = []) {
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if (!Array.isArray(words) || words.length === 0) {
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return {
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wordTimings: [],
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cueTimings: [],
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totalDuration: 0
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};
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}
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const totalChars = words.reduce((sum, word) => sum + String(word || '').length, 0);
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if (totalChars === 0) {
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return {
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wordTimings: words.map(word => ({ word, delay: 0, duration: 0 })),
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cueTimings: [],
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totalDuration: 0
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};
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}
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const msPerChar = Number(totalDuration || 0) / totalChars;
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let currentDelay = 0;
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const wordTimings = words.map(word => {
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const duration = String(word || '').length * msPerChar;
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const timing = {
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word,
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delay: currentDelay,
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duration
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};
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currentDelay += duration;
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return timing;
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});
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const cueTimings = (cueMarkers || []).map(cue => {
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const wordIndex = Math.max(0, Math.min(cue.wordIndex || 0, wordTimings.length - 1));
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const timing = wordTimings[wordIndex] || { delay: currentDelay };
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return {
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...cue,
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delay: timing.delay
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};
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});
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return {
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wordTimings,
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cueTimings,
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totalDuration: Math.round(currentDelay)
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};
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}
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createRevealDetail(sentence = {}, spread = null, phase = 'activate') {
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return {
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id: sentence.id,
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blockId: sentence.blockId,
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wordTimings: sentence.animation?.wordTimings || [],
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cueTimings: sentence.animation?.cueTimings || [],
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totalDuration: sentence.animation?.totalDuration || 0,
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spread,
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phase
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};
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}
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applyTexturePlan(texturePlan = null, segment = {}, phase = 'activate') {
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if (!texturePlan) {
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throw new Error(`BookPlaybackTimeline: Missing texture plan for block ${segment.blockId ?? 'unknown'} during ${phase}`);
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}
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if (typeof window.BookLabDebug?.applyPageTextureRecords !== 'function') {
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throw new Error('BookPlaybackTimeline: WebGL book lab cannot apply prepared texture plans');
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}
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window.BookLabDebug.applyPageTextureRecords({
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...texturePlan,
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phase: phase === 'prepare' ? 'prepare' : 'activate'
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});
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this.recordDiagnostic(`texture-plan-applied:${phase}`, segment);
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return true;
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}
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startRevealForSegment(segment = {}) {
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if (!segment?.blockId) return false;
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const revealStart = this.textureRenderer?.startPreparedRevealAnimation?.(segment.blockId, {
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publishEvent: false
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});
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if (!revealStart) {
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throw new Error(`BookPlaybackTimeline: Prepared reveal animation is missing for block ${segment.blockId}`);
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}
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if (typeof window.BookLabDebug?.startRevealForBlock !== 'function') {
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throw new Error('BookPlaybackTimeline: WebGL book lab cannot start prepared reveals explicitly');
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}
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window.BookLabDebug.startRevealForBlock(segment.blockId);
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this.markBenchmark('reveal-start', segment);
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this.recordDiagnostic('reveal-started', segment);
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return true;
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}
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requiresSpreadTransition(segment = {}) {
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return Math.max(0, Number(segment.targetSpreadIndex || 0)) > this.getVisibleSpreadIndex();
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}
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requiresRightPageFlipAfterReveal(spread = {}) {
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const meta = spread?.pageMeta?.right || null;
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if (!meta || meta.section !== 'body' || meta.kind === 'blank' || meta.kind === 'title') return false;
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const rightLines = Array.isArray(spread?.right) ? spread.right : [];
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const maxLine = rightLines.reduce((max, line) => Math.max(
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max,
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Number(line?.pageLine || 0) + Math.max(1, Number(line?.lineCount || 1))
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), 0);
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return maxLine >= Math.max(1, Number(meta.linesPerPage || 25));
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}
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getBlockRevealSides(spread = {}, blockId = null) {
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const id = String(blockId ?? '');
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if (!id) return [];
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return ['left', 'right'].filter((side) => {
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const lines = Array.isArray(spread?.[side]) ? spread[side] : [];
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return lines.some(line => String(line?.blockId ?? '') === id);
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});
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}
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async waitForVisualCompletion(segment = {}) {
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if (!segment.requiresRightFlip || !Array.isArray(segment.revealSides) || !segment.revealSides.includes('right')) {
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this.recordDiagnostic('visual-completion:no-right-flip-wait', segment);
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return;
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}
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const committed = await this.timeStage('wait-right-reveal-commit', segment, () => this.waitForRevealCommit(segment));
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if (!committed || this.isChoiceAwaitingPlayer()) return;
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await this.timeStage('right-page-flip', segment, () => this.requestPageFlip(1, {
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reason: 'timeline-right-page-filled',
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targetSpread: Math.max(0, Number(segment.targetSpreadIndex || this.getVisibleSpreadIndex()) + 1),
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force: true
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}));
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}
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waitForRevealCommit(segment = {}) {
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const blockId = String(segment.blockId ?? '');
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if (!blockId) return Promise.resolve(false);
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return new Promise(resolve => {
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let resolved = false;
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const finish = (value) => {
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if (resolved) return;
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resolved = true;
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clearTimeout(timeoutId);
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document.removeEventListener('webgl-book:reveal-committed', onCommitted);
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resolve(value);
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};
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const onCommitted = (event) => {
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const detail = event.detail || {};
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if (detail.side !== 'right' || detail.pageFlipAfterReveal !== true) return;
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const ids = Array.isArray(detail.blockIds) ? detail.blockIds.map(value => String(value)) : [];
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if (!ids.includes(blockId)) return;
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finish(true);
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};
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const timeoutId = setTimeout(() => {
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this.pageCache?.recordProblem?.({
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type: 'timeline-reveal-commit-timeout',
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blockId: segment.blockId,
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targetSpread: segment.targetSpreadIndex
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});
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finish(false);
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}, Math.max(2000, Number(segment.sentence?.animation?.totalDuration || 0) + 3000));
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document.addEventListener('webgl-book:reveal-committed', onCommitted);
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});
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}
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async requestPageFlip(direction = 1, options = {}) {
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if (this.isChoiceAwaitingPlayer()) return false;
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await this.pageCache?.prewarmNavigationWindow?.({
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currentSpread: this.getVisibleSpreadIndex(),
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targetSpread: options.targetSpread,
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endSpread: Math.max(0, Number(this.pagination?.spreads?.length || 1) - 1),
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getPageMetaForIndex: this.getPageMetaForIndex,
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recordMiss: true
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});
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await this.assertSegmentReady({
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blockId: options.blockId ?? null,
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targetSpreadIndex: options.targetSpread,
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revealSides: []
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}, 'flip');
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const wait = this.waitForPageFlipFinished(options.targetSpread);
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if (typeof window.BookLabDebug?.requestPageFlip !== 'function') {
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throw new Error('BookPlaybackTimeline: WebGL book lab cannot execute prepared flip plans');
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}
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window.BookLabDebug.requestPageFlip(direction, {
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force: options.force === true,
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reason: options.reason || 'timeline',
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targetSpread: options.targetSpread
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});
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return wait;
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}
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async prewarmSegmentTextures(segment = {}) {
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if (!this.pageCache || typeof this.pageCache.prewarmNavigationWindow !== 'function') return null;
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const targetSpread = Math.max(0, Number(segment.targetSpreadIndex || 0));
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const endSpread = Math.max(targetSpread, Math.max(0, Number(this.pagination?.spreads?.length || 1) - 1));
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const result = await this.pageCache.prewarmNavigationWindow({
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currentSpread: this.getVisibleSpreadIndex(),
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targetSpread,
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endSpread,
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getPageMetaForIndex: this.getPageMetaForIndex,
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recordMiss: false
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});
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segment.textureWindowReady = true;
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segment.textureWindowSpreadCount = result ? Object.keys(result).length : 0;
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return result;
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}
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collectRequiredPageMetas(segment = {}) {
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const spreads = new Set();
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const currentSpread = this.getVisibleSpreadIndex();
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const targetSpread = Number.isFinite(Number(segment.targetSpreadIndex))
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? Math.max(0, Math.round(Number(segment.targetSpreadIndex)))
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: currentSpread;
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spreads.add(0);
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spreads.add(currentSpread);
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spreads.add(Math.max(0, currentSpread - 1));
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spreads.add(currentSpread + 1);
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spreads.add(targetSpread);
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if (segment.requiresRightFlip) spreads.add(targetSpread + 1);
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return Array.from(spreads)
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.filter(spread => spread >= 0)
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.flatMap(spread => [
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this.getPageMetaForIndex(spread * 2),
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this.getPageMetaForIndex(spread * 2 + 1)
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]);
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}
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async assertSegmentReady(segment = {}, phase = 'play') {
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if (!this.pageCache || typeof this.pageCache.ensurePageTexture !== 'function') {
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throw new Error('BookPlaybackTimeline: Page texture cache is not available');
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}
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const metas = this.collectRequiredPageMetas(segment);
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const missing = [];
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await Promise.all(metas.map(async (meta) => {
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const texture = await this.pageCache.ensurePageTexture(meta, {
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recordMiss: true
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});
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if (!texture) missing.push(meta);
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}));
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if (missing.length > 0) {
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this.pageCache.recordProblem?.({
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type: 'timeline-cache-readiness-failed',
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phase,
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blockId: segment.blockId ?? null,
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missingPages: missing.map(meta => meta.pageIndex ?? null)
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});
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throw new Error(`BookPlaybackTimeline: Cache readiness failed during ${phase} for pages ${missing.map(meta => meta.pageIndex).join(', ')}`);
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}
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segment.cacheReady = true;
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segment.cacheReadyPhase = phase;
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this.recordDiagnostic(`cache-ready:${phase}`, segment);
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return true;
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}
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getPageMetaForIndex(pageIndex = 0) {
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const index = Math.max(0, Math.round(Number(pageIndex || 0)));
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const spreadIndex = Math.floor(index / 2);
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const side = index % 2 === 0 ? 'left' : 'right';
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const spread = typeof this.pagination?.getSpread === 'function'
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? this.pagination.getSpread(spreadIndex)
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|
: this.pagination?.spreads?.[spreadIndex];
|
|
const source = spread?.pageMeta?.[side] || {};
|
|
const metrics = this.textureRenderer?.metrics || {};
|
|
return {
|
|
...source,
|
|
pageIndex: index,
|
|
width: metrics.width,
|
|
height: metrics.height,
|
|
kind: source.kind || (index < 3 ? 'blank' : 'content'),
|
|
section: source.section || (index < 3 ? 'frontmatter' : 'body')
|
|
};
|
|
}
|
|
|
|
waitForPageFlipFinished(targetSpread = null) {
|
|
return new Promise(resolve => {
|
|
let started = false;
|
|
let resolved = false;
|
|
const expectedSpread = Number.isFinite(Number(targetSpread))
|
|
? Math.max(0, Math.round(Number(targetSpread)))
|
|
: null;
|
|
const cleanup = () => {
|
|
document.removeEventListener('webgl-book:page-flip-started', onStarted);
|
|
document.removeEventListener('webgl-book:page-flip-finished', onFinished);
|
|
clearTimeout(timeoutId);
|
|
};
|
|
const finish = (value) => {
|
|
if (resolved) return;
|
|
resolved = true;
|
|
cleanup();
|
|
resolve(value);
|
|
};
|
|
const matches = (detail = {}) => {
|
|
if (expectedSpread === null) return true;
|
|
const spread = Number(detail.targetSpread);
|
|
return Number.isFinite(spread) && Math.max(0, Math.round(spread)) === expectedSpread;
|
|
};
|
|
const onStarted = (event) => {
|
|
if (matches(event.detail || {})) started = true;
|
|
};
|
|
const onFinished = (event) => {
|
|
if (matches(event.detail || {})) finish(true);
|
|
};
|
|
const timeoutId = setTimeout(() => {
|
|
this.pageCache?.recordProblem?.({
|
|
type: 'timeline-page-flip-timeout',
|
|
targetSpread: expectedSpread,
|
|
started
|
|
});
|
|
finish(false);
|
|
}, 2600);
|
|
document.addEventListener('webgl-book:page-flip-started', onStarted);
|
|
document.addEventListener('webgl-book:page-flip-finished', onFinished);
|
|
});
|
|
}
|
|
|
|
getVisibleSpreadIndex() {
|
|
const labSpread = window.BookLabDebug?.getBookState?.()?.spreadIndex;
|
|
if (Number.isFinite(Number(labSpread))) return Math.max(0, Math.round(Number(labSpread)));
|
|
return Math.max(0, Math.round(Number(this.pagination?.currentSpreadIndex || 0)));
|
|
}
|
|
|
|
isChoiceAwaitingPlayer() {
|
|
return document.documentElement.dataset.choiceAwaiting === 'true'
|
|
|| document.body?.dataset?.choiceAwaiting === 'true'
|
|
|| Boolean(document.querySelector('#choice_menu:not([hidden]) .choice, #choice_menu.visible .choice'));
|
|
}
|
|
|
|
recordDiagnostic(type, segment = {}) {
|
|
this.timelineDiagnostics.push({
|
|
type,
|
|
blockId: segment.blockId ?? null,
|
|
spreadIndex: segment.targetSpreadIndex ?? null,
|
|
status: segment.status || null,
|
|
revealSides: Array.isArray(segment.revealSides) ? segment.revealSides : [],
|
|
at: Math.round(performance.now())
|
|
});
|
|
while (this.timelineDiagnostics.length > 200) this.timelineDiagnostics.shift();
|
|
document.documentElement.dataset.webglBookTimeline = type;
|
|
}
|
|
|
|
markBenchmark(stage, detail = {}, startedAt = null) {
|
|
const now = performance.now();
|
|
const entry = {
|
|
stage,
|
|
blockId: detail.blockId ?? null,
|
|
spreadIndex: detail.targetSpreadIndex ?? detail.spreadIndex ?? detail.targetSpread ?? null,
|
|
durationMs: Number.isFinite(Number(startedAt)) ? Math.round((now - Number(startedAt)) * 100) / 100 : null,
|
|
at: Math.round(now),
|
|
detail: {
|
|
status: detail.status || null,
|
|
revealSides: Array.isArray(detail.revealSides) ? detail.revealSides : undefined,
|
|
reason: detail.reason || null,
|
|
side: detail.side || null,
|
|
pageFlipAfterReveal: detail.pageFlipAfterReveal === true
|
|
}
|
|
};
|
|
this.benchmarkEntries.push(entry);
|
|
while (this.benchmarkEntries.length > 240) this.benchmarkEntries.shift();
|
|
document.documentElement.dataset.webglBookBenchmark = JSON.stringify(this.benchmarkEntries.slice(-40));
|
|
return entry;
|
|
}
|
|
|
|
async timeStage(stage, detail = {}, callback = null) {
|
|
const startedAt = performance.now();
|
|
this.markBenchmark(`${stage}:start`, detail);
|
|
try {
|
|
const result = await callback?.();
|
|
this.markBenchmark(`${stage}:end`, detail, startedAt);
|
|
return result;
|
|
} catch (error) {
|
|
this.markBenchmark(`${stage}:error`, {
|
|
...detail,
|
|
reason: error?.message || String(error)
|
|
}, startedAt);
|
|
throw error;
|
|
}
|
|
}
|
|
|
|
getRuntimeState() {
|
|
return {
|
|
activeBlockId: this.activeSegment?.blockId ?? null,
|
|
preparedSegmentCount: this.preparedSegments.size,
|
|
ownsPageFlipCommit: this.ownsPageFlipCommit,
|
|
diagnostics: this.timelineDiagnostics.slice(-20),
|
|
benchmark: this.benchmarkEntries.slice(-40)
|
|
};
|
|
}
|
|
}
|
|
|
|
const bookPlaybackTimeline = new BookPlaybackTimelineModule();
|
|
|
|
export { bookPlaybackTimeline as BookPlaybackTimeline };
|
|
|
|
if (window.moduleRegistry) {
|
|
window.moduleRegistry.register(bookPlaybackTimeline);
|
|
}
|
|
|
|
window.BookPlaybackTimeline = bookPlaybackTimeline;
|