The simulator itself is licensed under the EUPL v. 1.2, see LICENSE. Material from other projects that is checked into this repository keeps its own licence; this file lists it.
The bevy* skills and similarity-rs are taken from
chrisgliddon/bevy-skills and are
used under the MIT licence. They are documentation for AI coding agents and are
not compiled into any binary.
MIT License
Copyright (c) 2026 Chris Gliddon
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
The editor-ui and screenshot skills are project-specific and covered by the
EUPL like the rest of the repository.
The night sky is the real one. stars.bin holds the naked-eye stars — right
ascension, declination, apparent magnitude and colour index — filtered out of
the HYG database by
tools/gen_stars.py. The database is compiled by David Nash (Astronomy Nexus)
from the Hipparcos, Yale Bright Star and Gliese catalogues and is used here
under the Creative Commons Attribution-ShareAlike 4.0 International licence
(https://creativecommons.org/licenses/by-sa/4.0/).
Attribution: The HYG database, © David Nash / Astronomy Nexus, CC BY-SA 4.0.
The file is data, not code: it is read by world_render::sky and shipped inside
the binary, and any redistribution of it stays under CC BY-SA 4.0.
The sun on the status bar's day rail, the calendar leaf on its date button and
the two carets in the calendar are glyphs of the
Phosphor icon font by Helena
Zhang and Tobias Fried, bundled through the egui-phosphor crate and used
under the MIT licence. Everything else in the editors is drawn from line
segments (crates/editor-ui/src/icon.rs); the font is for the symbols a
22-pixel drawing cannot carry.
MIT License
Copyright (c) 2023 Phosphor Icons
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
The egui-phosphor crate that bundles the font (© 2023 Romet Tagobert) is MIT
OR Apache-2.0; the font file it ships is compiled into the editor binaries.
Crates pulled in by Cargo are not vendored here; their licences are those
declared in Cargo.lock and can be listed with
cargo license or cargo about.