cel7: community edition

What

cel7ce is an open-source reimplementation of cel7. It aims to be a bit more polished and feature-rich while being (almost) completely backwards-compatible with the original cel7.

New features

• Support for janet
• Two memory banks.
• Fancy loading animation.
• Others I've forgotten.
• Addition of strlen, strstart, char->num, num->char, strat,
  username functions for fe.
• A new scale script config value.

Breaking changes

• Escape quits immediately, not executing keydown.
• The keyup callback was removed.
• It is no longer possible to load sprites into memory before init() is
  called.
  • demos/snake.c7 was modified to comply with these requirements.

Non-breaking changes

• demos/hello.c7 was modified to affect scale and text placement.
• No errors are given if (>= (* height width) 2048).

Why

The original cel7 seems abandoned at present; no updates have been posted in a while and many parts are thoroughly undocumented. Additionally, as no source code is available, there's no way to run it on platforms that a binary isn't provided for, like a Raspberry Pi. Due to these and other issues, I decided to do a reimplementation in order to continue the project.

License

All code, with the exception of demos/bonsai.c7, demos/hello.c7, demos/glitch.c7, demos/maze.c7, and demos/snake.c7 are licensed under the GPLv3 license.

The previously-mentioned demos, except demos/bonsai.c7, are copyright @rxi and are not, as far as I'm aware, under any open source license. You can find the original versions here.

demos/bonsai.c7 was ported from jallbrit's bonsai.sh script, and is also licensed under the GPLv3 license.