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CHANGELOG.md

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Changelog

All notable changes to HudAim will be documented in this file.

The format is based on Keep a Changelog.

[2.0.0] - 2026-02-27

Added

  • Target Switching game — eliminate 4 moving targets in 60 seconds, score = kills x 100
  • Precision game — hit small 40px targets with accuracy scoring, score = kills x accuracy
  • Replay system — 60 FPS gameplay recording with full playback controls (pause, seek, speed)
    • IndexedDB storage for local replays
    • Server upload for top 3 scores per game type
    • ReplayViewer component with timeline scrubbing
  • Post-game analytics — click heatmap visualization and statistical breakdowns
  • PostGameAnalytics component — renders click distribution and performance metrics
  • Unified Leaderboards page — view top 10 for all games in one place
  • FixedGameArea component — standardized 1200x600px game container
  • HMAC-SHA256 anti-cheat sessions — server-signed sessions with signature verification
  • Score plausibility validation — per-game bounds checking (hit rate, reaction time, accuracy, score calculation)
  • Duration validation — server verifies game length matches expected range
  • Replay cleanup — server automatically prunes replays outside top 3

Changed

  • Upgraded React 18 → 19, React Router 6 → 7, Vite 5 → 7
  • Added TailwindCSS 4 for utility styling alongside inline styles
  • Server request body limit increased to 10MB for replay uploads
  • Anti-cheat now uses crypto.timingSafeEqual for constant-time signature comparison
  • Leaderboard entries from session system marked with verified: true

[1.0.0] - 2026-01-07

Added

  • Tracking game with Kovaaks-style strafe patterns

    • Smooth, Reactive, Stutter, and Zigzag movement patterns
    • Progressive difficulty scaling based on player accuracy
    • Reaction time tracking for target reacquisition
    • Difficulty levels: Easy, Easy+, Medium, Hard, Insane
    • Aggressive point scaling at higher difficulties

  • Browser resize anti-cheat — scores invalidated if window resized during gameplay

  • UUID-based user system

    • Unique user identification via localStorage UUID
    • Nickname changes update all historical scores
    • First-load nickname prompt for new users

  • LAN leaderboard sync

    • Express backend server for score synchronization
    • Hybrid local/server storage (works offline)
    • Real-time score syncing across devices

  • Settings modal — nickname management, clear leaderboard data

Changed

  • Tracking target size increased to 72px (20% larger)
  • Removed stutter pause — bot always moves continuously
  • Improved reaction time calculation accuracy
  • GridShot optimized with refs and Set for O(1) lookups

Fixed

  • Tracking game lag issues (direct DOM manipulation instead of React state)
  • Reaction time showing 0ms — now tracks all target acquisitions
  • Leaderboard not syncing across nickname changes

[0.2.0] - 2026-01-07

Added

  • Leaderboard UI on all game pages
  • Settings icon in navbar
  • Nickname input on results screens
  • Local leaderboard storage using localStorage

Changed

  • All games now run entirely client-side
  • Improved game responsiveness

[0.1.0] - 2026-01-07

Added

  • Initial release
  • Reaction Time game
  • Aim Trainer game
  • Grid Shot game
  • Basic Tracking game
  • Home page with game selection
  • Responsive navbar with game links