Michael Mainguy d8571ef740 Add physics recorder system with ring buffer and IndexedDB storage ...

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>

2025-11-08 05:22:49 -06:00

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