Back to GDCS

Changelog

All notable changes to GDCS. The format follows Keep a Changelog and the project uses Semantic Versioning:

  • MAJOR: breaking changes to public surfaces, such as sheet URLs, the .md / llms.txt / feed.json formats or the API.
  • MINOR: new sheets, categories, learning paths or features.
  • PATCH: fixes and content corrections.

The version shows in the site footer (from package.json). Releases are tagged vX.Y.Z.

1.12.9 2026-11-02

Changed

  • The faint grid now appears only on 3D simulations, as a floor aligned with the scene. 2D simulations have no grid.

1.12.8 2026-11-02

Changed

  • Build tools upgraded to Vite+ 1.3.0.

1.12.7 2026-11-02

Changed

  • Every simulation now has the same faint grid behind it.

Fixed

  • The changelog page no longer overflows sideways on phones.

1.12.6 2026-11-02

Added

  • A changelog page at /changelog. The version number in the hero and footer now opens it, instead of a private GitHub page that returned 404.

Changed

  • The About page takes corrections by email instead of linking to a private GitHub page.

1.12.5 2026-11-02

Changed

  • License terms: embeds come with no warranty and can be changed or withdrawn, resizing an embed is allowed, reusing an image of a simulation does not license the simulation, and attribution includes the copyright holder.
  • Documentation moved to docs/reference/ and docs/decisions/, indexed in docs/README.md.

Fixed

  • third-party-licenses.txt now includes the license texts it was missing, and lists KaTeX fonts correctly as MIT.

1.12.4 2026-11-02

Changed

  • Key formulas are a little larger, with full-size fractions and sums.

Fixed

  • Long inline code in sheet text wraps on phones instead of making the page scroll sideways.

1.12.3 2026-11-02

Fixed

  • Moving from one sheet to another now loads that sheet's simulation. It used to keep the previous sheet's scene and slider values until a full page load.

1.12.2 2026-11-02

Fixed

  • Deeper addresses under /embed/ show the short not-found message. 1.12.1 still showed the site layout for them, though they could not be framed.

1.12.1 2026-11-02

Security

  • Addresses under /embed/ that are not real embeds can no longer be framed.

1.12.0 2026-11-02

Added

  • Embeds: "Copy embed code" on every sheet, and /embed/<slug> pages other sites can frame, with a link back to the sheet.
  • /license page, and third-party-licenses.txt with the license text of every production dependency.
  • License information in llms.txt, .md files, robots.txt, JSON-LD, page headers and JavaScript files.

Changed

  • License: sheet text and images CC BY 4.0, code examples and prompts MIT, simulations and site code all rights reserved. Earlier versions were MIT.

1.11.0 2026-11-02

Added

  • 5 multiplayer sheets: latency, RTT and jitter; lag compensation; dead reckoning; deterministic lockstep; interest management.

Changed

  • The Multiplayer & netcode path now has 10 steps.

1.10.3 2026-11-02

Changed

  • The theme follows the device automatically, including live changes. Auto, Light and Dark are chosen in one place: the last column of the footer.

1.10.2 2026-11-02

Changed

  • New Coody glitch logo in the favicons, app icons and default social card, with a maskable icon for Android. pnpm brand rebuilds them from src/assets/brand.

1.10.1 2026-11-02

Tagged but never deployed: a type error in the asset script failed the build.

1.10.0 2026-11-02

Added

  • Code blocks have line numbers, a file icon and a wrap button.

Changed

  • Prompts are real Markdown: the sheet title as a heading and each instruction as a bullet, with highlighting. Copy buttons and .md files use the same format. The wording is unchanged.

1.9.1 2026-11-02

Fixed

  • "Related" and "In learning paths" cards on a sheet are now the same size.

1.9.0 2026-11-02

Added

  • 5 sheets: client-side prediction, snapshot interpolation and rollback netcode in a new Networking category; behavior trees and utility AI.
  • 2 learning paths: Multiplayer & netcode, and Game AI.

1.8.0 2026-11-02

Added

  • Light mode. It follows the system setting until you choose, with no flash on load. Simulations, code and formulas stay on dark panels in both themes.
  • Search filters show live counts for the current search, and choices with no results are disabled. A single topic opens its subtopics.
  • Sort results by best match, easiest first, A to Z or recently updated. Matching words are underlined in titles, and the down arrow moves into the results.
  • When filters hide every result, the page says how many and offers to search everything.

Changed

  • Powered by Coody opens in a new tab.
  • Signup text and privacy policy now say new sheets and updates.

Fixed

  • Long formulas that scroll sideways can be reached by keyboard.

1.7.1 2026-11-02

Fixed

  • Home page on phones: the hero poster ships inside the HTML, so the largest paint needs no second request.
  • Camera projection: "Yellow box distance" now works while "Move the box" is on. The box moves around the chosen distance.

1.7.0 2026-11-02

Added

  • Big search on the home page, merged with the category and level filters. Results show inline, ?q= links to a search, Enter opens the top result, and typing anywhere on the page goes to it.
  • Email signup in the hero, the same form as the footer.

Changed

  • Hero and footer fibers appear with the first paint: a poster of the first frame hands over to the live canvas, with no fade from empty. The poster stays for reduced motion, data saver and no WebGL.
  • Turnstile loads when someone starts using a signup form, not when the form comes into view.

Removed

  • The hero search button and the signup dialog.

1.6.1 2026-11-02

Fixed

  • Footer links meet the 24 px minimum touch target.

1.6.0 2026-11-02

Added

  • 8 sheets that finish the Top-40: collision detection, bounding volumes, impulse and momentum, moment of inertia, tangent space, camera projection, probability and weighted random, barycentric coordinates.
  • useLiveReadout in the visual kit, so the line under the controls can show values that change during the animation.

Changed

  • New sheets added to the learning paths and linked from related sheets.

1.5.0 2026-11-02

Added

  • SiteCredits, a reusable component next to PoweredByCoody: "Built in" with the Brazilian flag, the Newton quote, the year and Back to top. Used in the footer.
  • Cloudflare's security-audit skill in .claude/skills/.

1.4.1 2026-11-02

Fixed

  • Heading order on the learning paths page.

1.4.0 2026-11-02

Changed

  • Ghost Fibers now sits above the footer in place of the Gradient ASCII band, which is removed. The footer itself is plain.
  • Hero: tagline removed, version in small type after the title, and the sheet count is larger and counts up.
  • Footer: new column with the year, coody.app and Back to top.
  • Filter bar: two rows that wrap instead of scrolling, so nothing overlaps or hides. Clear filters is always visible and disabled until a filter is active.
  • Learning path cards use icons instead of images.
  • Sheet cards have a proper footer with the level and a labelled Copy prompt action.

1.3.1 2026-11-02

Changed

  • Clear filters moved into the filter bar.
  • Privacy contact is now hi@coody.app.
  • Footer keeps only its top line, with "Powered by" inside the footer.

Fixed

  • Filter bar separator is centred next to the level filters.

1.3.0 2026-11-02

Changed

  • Footer has the hero's Ghost Fibers behind it, with no dividing lines. The fibers run off the bottom of the screen, so the page reads as endless.

1.2.1 2026-11-02

Fixed

  • ASCII band fills its space above the footer instead of a thin line under a gap.

1.2.0 2026-11-02

Added

  • Hero background: Ghost Fibers from React Bits, in Coody neutrals. Replaces the grid and the simulation wall.
  • Low-opacity Gradient ASCII band before the footer.
  • Version next to the tagline in the hero and footer.

Changed

  • Filter bar stays in place on the page instead of following the scroll, and is taller with more padding.
  • Footer: centred year above "Powered by"; "Back to top" moved into the link columns.

Removed

  • Topics from the home page, including the filter.

1.1.3 2026-11-02

Fixed

  • Analytics beacon reports to the same-origin endpoint; the cross-origin one rejected it with a CORS error.

1.1.2 2026-11-02

Changed

  • Pages opt out of Cloudflare's injected bot-detection script with no-transform. It was the heaviest script on the page and nothing here uses its signal. Replaces the 1.1.0 nonce. The Worker now compresses pages, and the analytics beacon is a script tag.

Fixed

  • "Powered by" label contrast (the 1.1.1 fix did not apply).

1.1.1 2026-11-02

Changed

  • Home shows three sheets per category, fundamentals first, each linking to the full list. The page is much lighter and shorter.

Fixed

  • "Powered by" label contrast in the footer now meets WCAG AA.

1.1.0 2026-11-02

Added

  • Per-sheet social images (/og/<slug>.jpg, built with pnpm og).
  • Phone menu: one small button with search and navigation.
  • Hero wall of simulations: monochrome until touched.

Changed

  • Palette now uses the exact neutral greys of coody.app (it had drifted to blue-tinted zinc). Simulations use Tailwind green, yellow and red 400. All posters regenerated.
  • UI rebuilt on shadcn components: card, item, progress, command, accordion, sheet, field, alert, empty, skeleton, spinner, scroll area.
  • Filters and topics fit one line each; topics expand on demand.
  • Learning path cards share the sheet card's anatomy, with the first steps as artwork.
  • New footer with link columns; the X link is gone.
  • Tighter type scale, margins and padding across all pages.

Fixed

  • Content Security Policy now passes Cloudflare's bot protection script through a per-request nonce, so it no longer logs a console error. Pages run through the Worker; hashed files and images still skip it. Reverted in 1.1.2: letting the script run cost too much main-thread time.

1.0.1 2026-11-02

Fixed

  • Pageviews were double-counted: Cloudflare already injects the Web Analytics beacon at the edge, so the site no longer loads its own copy.

1.0.0 2026-11-02

Added

  • shadcn/ui (Base UI) components: code block with Shiki highlighting, badge, breadcrumb, button, input, dialog, kbd, separator, tooltip, slider, switch, toggle group.
  • Field of view, field-of-view visualization and stencil buffer sheets (AI › Perception, Three.js › Rendering).
  • Privacy policy, a "Get updates" dialog (full screen on phones), and an inline footer signup with a back-to-top link.
  • Semantic versioning shown in the footer.

Changed

  • Removed the top header. Typing anywhere opens search.
  • Consent version stored on subscribe; unsubscribing deletes the record.

0.4.0 2026-11-01

Added

  • 12 Top-40 sheets (vectors, dot/cross product, trigonometry, transforms, local vs world space, Euler angles, lerp/smoothstep, Bézier, rigid bodies, inverse kinematics, reflection/refraction, PBR) and an Animation category.
  • Learning paths with Course JSON-LD; static WebP posters with WebGL deferred until interaction (blocking time ~10 ms); Turnstile on signup.

Changed

  • Coody-neutral UI (black, white and greys). Simulations use only green, yellow and red. Every scene was reviewed for shape cues and formula colours.

0.3.0 2026-11-01

Added

  • Design system, ⌘K command palette, docs-style sheet layout (sidebar, table of contents, reading progress), level filters and the portable <PoweredByCoody /> component.

0.2.0 2026-11-01

Changed

  • Moved from Cloudflare Pages to a single Worker (static assets, API, mailer and weekly cron) on the gdcs.coody.app custom domain.

Fixed

  • Hardened subscriptions: confirmation throttling, rolling daily cap, per-endpoint rate limits.

0.1.0 2026-11-01

Added

  • Initial launch: 55 visual cheat sheets (game dev + physics), prerendered pages, Markdown twins, llms.txt, JSON-LD, sitemap, feed and email updates.

[1.0.1]: https://github.com/coodyapp/gdcs/releases/tag/v1.0.1

[1.0.0]: https://github.com/coodyapp/gdcs/releases/tag/v1.0.0