# Credits

Everything the page uses is in this folder. It makes no requests to other sites.

`js/assets-inline.js` holds base64 copies of the sprite sheets and fonts listed below, made by `tools/embed-assets.py`. These copies let the page work when opened straight from disk and keep the canvases readable for the colour-blindness filter. The licences are the same as for the original files.

| Item | Files | Licence | Source |
|---|---|---|---|
| **Pixel Platformer** (1.2) by Kenney: tiles, characters, backgrounds | `assets/kenney-pixel-platformer/tilemap_packed.png`, `tilemap-characters_packed.png`, `tilemap-backgrounds_packed.png` (licence text in `License.txt`) | CC0 1.0 (public domain), https://creativecommons.org/publicdomain/zero/1.0/ | https://kenney.nl/assets/pixel-platformer |
| **Atkinson Hyperlegible** (Regular and Bold, Latin subset, WOFF2) by the Braille Institute of America | `assets/fonts/AtkinsonHyperlegible-Regular.woff2`, `assets/fonts/AtkinsonHyperlegible-Bold.woff2` (licence text in `assets/fonts/OFL.txt`) | SIL Open Font License 1.1 | https://brailleinstitute.org/freefont. Files from the Fontsource package (https://fontsource.org/fonts/atkinson-hyperlegible), licence text from https://github.com/google/fonts/tree/main/ofl/atkinsonhyperlegible |

## References (nothing copied)

- Game Accessibility Guidelines, https://gameaccessibilityguidelines.com: the targets in the "Measured against the targets" tables (subtitle size and line length, text size and contrast, reduce motion, hold or toggle).
- Deuteranopia simulation matrix: Machado, Oliveira and Fernandes (2009), "A Physiologically-based Model for Simulation of Color Vision Deficiency", IEEE TVCG 15(6). Used as published numbers in `js/demos.js`.
- Contrast ratio formula: WCAG 2.x relative luminance and contrast ratio (W3C).

All code (`index.html`, `style.css`, `js/demos.js`) was written for this page.