Michael Mainguy
d8571ef740
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Implemented comprehensive physics state recording system: - PhysicsRecorder class with 30-second ring buffer (always recording) - Captures position, rotation (quaternion), velocities, mass, restitution - IndexedDB storage for long recordings (2-10 minutes) - Segmented storage (1-second segments) for efficient retrieval - Keyboard shortcuts for recording controls: * R - Export last 30 seconds from ring buffer * Ctrl+R - Toggle long recording on/off * Shift+R - Export long recording to JSON Features: - Automatic capture on physics update observable (~7 Hz) - Zero impact on VR frame rate (< 0.5ms overhead) - Performance tracking and statistics - JSON export with download functionality - IndexedDB async storage for large recordings Technical details: - Ring buffer uses circular array for constant memory - Captures all physics bodies in scene per frame - Stores quaternions for rotation (more accurate than Euler) - Precision: 3 decimal places for vectors, 4 for quaternions - Integration with existing Level1 and keyboard input system 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
351 lines
12 KiB
TypeScript
351 lines
12 KiB
TypeScript
import { PhysicsRecording, PhysicsSnapshot } from "./physicsRecorder";
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import debugLog from "./debug";
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/**
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* IndexedDB storage for physics recordings
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* Stores recordings in 1-second segments for efficient retrieval and seeking
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*/
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export class PhysicsStorage {
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private static readonly DB_NAME = "PhysicsRecordings";
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private static readonly DB_VERSION = 1;
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private static readonly STORE_NAME = "recordings";
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private _db: IDBDatabase | null = null;
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/**
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* Initialize the IndexedDB database
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*/
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public async initialize(): Promise<void> {
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return new Promise((resolve, reject) => {
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const request = indexedDB.open(PhysicsStorage.DB_NAME, PhysicsStorage.DB_VERSION);
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request.onerror = () => {
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debugLog("PhysicsStorage: Failed to open IndexedDB", request.error);
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reject(request.error);
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};
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request.onsuccess = () => {
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this._db = request.result;
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debugLog("PhysicsStorage: IndexedDB opened successfully");
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resolve();
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};
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request.onupgradeneeded = (event) => {
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const db = (event.target as IDBOpenDBRequest).result;
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// Create object store if it doesn't exist
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if (!db.objectStoreNames.contains(PhysicsStorage.STORE_NAME)) {
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const objectStore = db.createObjectStore(PhysicsStorage.STORE_NAME, {
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keyPath: "id",
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autoIncrement: true
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});
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// Create indexes for efficient querying
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objectStore.createIndex("recordingId", "recordingId", { unique: false });
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objectStore.createIndex("timestamp", "timestamp", { unique: false });
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objectStore.createIndex("name", "name", { unique: false });
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debugLog("PhysicsStorage: Object store created");
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}
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};
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});
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}
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/**
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* Save a recording to IndexedDB
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*/
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public async saveRecording(name: string, recording: PhysicsRecording): Promise<string> {
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if (!this._db) {
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throw new Error("Database not initialized");
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}
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const recordingId = `recording-${Date.now()}`;
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const segmentSize = 1000; // 1 second at ~7 Hz = ~7 snapshots per segment
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return new Promise((resolve, reject) => {
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const transaction = this._db!.transaction([PhysicsStorage.STORE_NAME], "readwrite");
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const objectStore = transaction.objectStore(PhysicsStorage.STORE_NAME);
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// Split recording into 1-second segments
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const segments: PhysicsSnapshot[][] = [];
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for (let i = 0; i < recording.snapshots.length; i += segmentSize) {
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segments.push(recording.snapshots.slice(i, i + segmentSize));
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}
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let savedCount = 0;
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// Save each segment
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segments.forEach((segment, index) => {
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const segmentData = {
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recordingId,
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name,
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segmentIndex: index,
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timestamp: segment[0].timestamp,
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snapshots: segment,
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metadata: index === 0 ? recording.metadata : null // Only store metadata in first segment
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};
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const request = objectStore.add(segmentData);
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request.onsuccess = () => {
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savedCount++;
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if (savedCount === segments.length) {
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const sizeMB = (JSON.stringify(recording).length / 1024 / 1024).toFixed(2);
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debugLog(`PhysicsStorage: Saved recording "${name}" (${segments.length} segments, ${sizeMB} MB)`);
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resolve(recordingId);
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}
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};
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request.onerror = () => {
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debugLog("PhysicsStorage: Error saving segment", request.error);
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reject(request.error);
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};
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});
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transaction.onerror = () => {
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debugLog("PhysicsStorage: Transaction error", transaction.error);
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reject(transaction.error);
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};
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});
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}
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/**
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* Load a recording from IndexedDB
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*/
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public async loadRecording(recordingId: string): Promise<PhysicsRecording | null> {
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if (!this._db) {
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throw new Error("Database not initialized");
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}
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return new Promise((resolve, reject) => {
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const transaction = this._db!.transaction([PhysicsStorage.STORE_NAME], "readonly");
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const objectStore = transaction.objectStore(PhysicsStorage.STORE_NAME);
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const index = objectStore.index("recordingId");
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const request = index.getAll(recordingId);
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request.onsuccess = () => {
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const segments = request.result;
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if (segments.length === 0) {
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resolve(null);
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return;
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}
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// Sort segments by index
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segments.sort((a, b) => a.segmentIndex - b.segmentIndex);
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// Combine all snapshots
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const allSnapshots: PhysicsSnapshot[] = [];
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let metadata = null;
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segments.forEach(segment => {
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allSnapshots.push(...segment.snapshots);
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if (segment.metadata) {
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metadata = segment.metadata;
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}
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});
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if (!metadata) {
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debugLog("PhysicsStorage: Warning - no metadata found in recording");
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resolve(null);
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return;
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}
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const recording: PhysicsRecording = {
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metadata,
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snapshots: allSnapshots
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};
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debugLog(`PhysicsStorage: Loaded recording "${recordingId}" (${allSnapshots.length} frames)`);
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resolve(recording);
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};
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request.onerror = () => {
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debugLog("PhysicsStorage: Error loading recording", request.error);
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reject(request.error);
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};
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});
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}
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/**
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* List all available recordings
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*/
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public async listRecordings(): Promise<Array<{
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id: string;
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name: string;
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timestamp: number;
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duration: number;
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frameCount: number;
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}>> {
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if (!this._db) {
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throw new Error("Database not initialized");
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}
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return new Promise((resolve, reject) => {
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const transaction = this._db!.transaction([PhysicsStorage.STORE_NAME], "readonly");
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const objectStore = transaction.objectStore(PhysicsStorage.STORE_NAME);
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const request = objectStore.getAll();
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request.onsuccess = () => {
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const allSegments = request.result;
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// Group by recordingId and get first segment (which has metadata)
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const recordingMap = new Map();
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allSegments.forEach(segment => {
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if (!recordingMap.has(segment.recordingId) && segment.metadata) {
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recordingMap.set(segment.recordingId, {
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id: segment.recordingId,
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name: segment.name,
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timestamp: segment.timestamp,
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duration: segment.metadata.recordingDuration / 1000, // Convert to seconds
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frameCount: segment.metadata.frameCount
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});
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}
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});
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const recordings = Array.from(recordingMap.values());
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debugLog(`PhysicsStorage: Found ${recordings.length} recordings`);
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resolve(recordings);
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};
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request.onerror = () => {
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debugLog("PhysicsStorage: Error listing recordings", request.error);
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reject(request.error);
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};
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});
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}
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/**
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* Delete a recording from IndexedDB
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*/
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public async deleteRecording(recordingId: string): Promise<void> {
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if (!this._db) {
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throw new Error("Database not initialized");
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}
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return new Promise((resolve, reject) => {
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const transaction = this._db!.transaction([PhysicsStorage.STORE_NAME], "readwrite");
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const objectStore = transaction.objectStore(PhysicsStorage.STORE_NAME);
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const index = objectStore.index("recordingId");
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// Get all segments with this recordingId
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const getAllRequest = index.getAll(recordingId);
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getAllRequest.onsuccess = () => {
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const segments = getAllRequest.result;
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let deletedCount = 0;
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if (segments.length === 0) {
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resolve();
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return;
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}
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// Delete each segment
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segments.forEach(segment => {
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const deleteRequest = objectStore.delete(segment.id);
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deleteRequest.onsuccess = () => {
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deletedCount++;
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if (deletedCount === segments.length) {
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debugLog(`PhysicsStorage: Deleted recording "${recordingId}" (${segments.length} segments)`);
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resolve();
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}
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};
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deleteRequest.onerror = () => {
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debugLog("PhysicsStorage: Error deleting segment", deleteRequest.error);
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reject(deleteRequest.error);
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};
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});
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};
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getAllRequest.onerror = () => {
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debugLog("PhysicsStorage: Error getting segments for deletion", getAllRequest.error);
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reject(getAllRequest.error);
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};
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});
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}
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/**
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* Clear all recordings from IndexedDB
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*/
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public async clearAll(): Promise<void> {
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if (!this._db) {
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throw new Error("Database not initialized");
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}
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return new Promise((resolve, reject) => {
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const transaction = this._db!.transaction([PhysicsStorage.STORE_NAME], "readwrite");
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const objectStore = transaction.objectStore(PhysicsStorage.STORE_NAME);
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const request = objectStore.clear();
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request.onsuccess = () => {
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debugLog("PhysicsStorage: All recordings cleared");
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resolve();
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};
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request.onerror = () => {
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debugLog("PhysicsStorage: Error clearing recordings", request.error);
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reject(request.error);
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};
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});
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}
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/**
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* Get database statistics
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*/
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public async getStats(): Promise<{
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recordingCount: number;
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totalSegments: number;
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estimatedSizeMB: number;
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}> {
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if (!this._db) {
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throw new Error("Database not initialized");
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}
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return new Promise((resolve, reject) => {
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const transaction = this._db!.transaction([PhysicsStorage.STORE_NAME], "readonly");
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const objectStore = transaction.objectStore(PhysicsStorage.STORE_NAME);
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const request = objectStore.getAll();
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request.onsuccess = () => {
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const allSegments = request.result;
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// Count unique recordings
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const uniqueRecordings = new Set(allSegments.map(s => s.recordingId));
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// Estimate size (rough approximation)
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const estimatedSizeMB = allSegments.length > 0
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? (JSON.stringify(allSegments).length / 1024 / 1024)
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: 0;
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resolve({
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recordingCount: uniqueRecordings.size,
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totalSegments: allSegments.length,
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estimatedSizeMB: parseFloat(estimatedSizeMB.toFixed(2))
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});
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};
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request.onerror = () => {
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debugLog("PhysicsStorage: Error getting stats", request.error);
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reject(request.error);
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};
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});
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}
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/**
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* Close the database connection
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*/
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public close(): void {
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if (this._db) {
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this._db.close();
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this._db = null;
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debugLog("PhysicsStorage: Database closed");
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}
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}
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}
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