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Changelog

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

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[Unreleased]

Added

  • NodeFileProvider can load files from .zip, .tar.gz, .tgz, and .rar archives and exposes clearCache().
  • Node tools export sprites and package levels.
  • Complete Mocha test suite with GitHub Actions workflows.
  • Bench mode shows a color-coded overlay and recovers speed dynamically.
  • Progressive Web App support via site.webmanifest, touch icons, and a service worker cache.
  • New docs under docs/ cover CI, testing and sprite export tools.
  • MIDI device hot-plug listeners refresh input/output lists while preserving selections.

Fixed

  • Debounced stage resize updates to avoid redundant canvas layout work.
  • MIDI enable failures now surface in the UI and the error display resets cleanly.
  • DisplayImage.drawDashedRect now handles the RGB signature used by the editor overlay.

Changed

  • patchSprites.js can slice sprite sheets using --sheet-orientation.
  • packLevels.js creates DAT archives from 2048-byte level files.
  • These tools rely on NodeFileProvider to read packs from folders or archives.
  • FileProvider now prefers IndexedDB caching with localStorage fallback and chunked base64 conversion.

Removed

  • Agent-focused search/index tooling and related metrics tracking.

[0.0.3] - 2025-06-08

Added

  • HQX and xBRZ scaling options for smoother graphics.
  • Frame step controls for debug playback.
  • Bench mode records spawn totals, spawns entrances near originals, randomizes direction and shows TPS.
  • Optional custom crosshair cursor.

Fixed

  • Zoom near the level origin centers on the pointer.
  • Bench timers, overlay color and text spacing.
  • Zoom direction, pan clamping and bottom clamp issues.
  • Viewport panning and centering calculations.
  • Crosshair transparency and HUD alignment during resize.
  • Stage and GUI alignment.
  • Stage layout reserves a bottom margin for the HUD.

Changed

  • Project now requires Node.js 20+.

[0.0.2] - 2025-06-04

Added

  • Keyboard shortcuts to adjust speed and game functions.
  • Right-click actions for quick release-rate changes and debug toggle.
  • Support for levels with multiple entrances and animated traps.
  • Minimap with zoom and click-and-drag repositioning.
  • Original crosshair cursor sprite.
  • WebMIDI integration with device selection and error display.
  • On-screen speed control UI.
  • Frying, jumping and hoisting animations.
  • Minimap viewport box and death markers.
  • Level packs for Xmas '91/'92 and Holiday '93/'94.
  • Skill selection and speed changes while paused.
  • Asynchronous Blob loading for BinaryReader.
  • Mouse wheel zoom centers on the cursor and keeps the world point under the cursor fixed.

Fixed

  • Switching the game type refreshes level resources automatically.
  • Numerous crashes and invisible blockers when lemmings die.
  • Corrected fall height and trap cooldown behavior.
  • Arrow trigger animation and explosion sprite alignment issues.
  • Crash when floating and other action reapply bugs.
  • Bomb counters persisting after trap deaths.
  • Prevent wasted skill actions while falling.
  • Log resource loading failures for easier debugging.

Changed

  • Optimized performance to handle thousands of lemmings per tick.
  • Improved steel terrain detection and arrow wall functionality.

[0.0.1] - 2025-06-03

Added

  • Displayed speed indicator with keyboard shortcuts and right-click reset.
  • Instant min/max release rates and crosshair cursor sprite.
  • Multi-entrance levels, trap animations with cooldowns, and arrow walls.
  • Minimap with drag-to-pan, zoom, and skill usage while paused.
  • Extended debug controls via Nuke toggle and URL parameters.

Fixed

  • Various crashes and invisible blockers after blocking ends.
  • Actions consumed by dead lemmings and lingering bomber triggers.
  • Trap sprite misalignment, arrow wall animations, and fall height.
  • Missing trap cooldown and redundant or wasted actions.

Changed

  • Optimized hot loops and memory usage with typed arrays and caching.
  • Grid-based trigger management and requestAnimationFrame timing.
  • Better error propagation, modular code, and partial JSDoc coverage.

[0.0.0] - 2025-05-31

Added

  • First playable JavaScript port with level and sprite assets.
  • PWA manifest, icons and mobile layout improvements.
  • Early WebMIDI integration with device selection.
  • Basic minimap prototype and debug logging toggles.
  • Initial documentation including file format notes.

Fixed

  • Crash fixes for floating lemmings and arrow triggers.
  • Early steel detection and trap collision issues.

Changed

  • Removed incomplete sound and music code.
  • General performance and CSS tweaks.