xonotic/COPYING

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Xonotic Licensing
=================
Scope
-----
This licensing document pertains to:
- Official Xonotic releases
- The Team Xonotic-owned branches (i.e. those whose name does not contain a
slash, like "master" and "div0-stable") of the repositories on
git://git.xonotic.org/xonotic/ including all their ancestor commits
Team Xonotic does not make any guarantees for licensing or legal status of any
content not distributed as part of official Xonotic releases or Team
Xonotic-owned branches, such as:
- Files downloaded from a web server by Xonotic (e.g. automatic map downloads)
- Branches of our repository that are owned by a user of the repository, and
thus not owned by Team Xonotic (these branches are usually prefixed with user
name and a slash, as in "divVerent/")
For status of such content, please contact its author.
Licensing Grant
---------------
All source files (as defined by the respective license) in scope of this
document are under the GPL version 3 or any later version, at your choice.
The source code of the game engine, DarkPlaces, is licensed under the GPL
version 2 or any later version, at your choice. Furthermore, some source code
inside the qcsrc/ directory may also be usable under other licenses as
indicated by COPYING files therein.
The two relevant licenses are provided in the files GPL-2 and GPL-3 in this
package.
Source Code Download
--------------------
Current and past Xonotic source, including tagged commits containing source
matching any official Xonotic release, is available on
git://git.xonotic.org/xonotic/
Contributions
-------------
By committing data/files, you agree to license all the changes/additions
contained in your commits to Team Xonotic under the terms of the applicable
license as described above. In particular, you guarantee that you have
acquired all the necessary rights from possible other copyright holders to be
able to license your work under this license. Any submission which does not
fulfill this condition may lead to legal action against the submitter.
Exceptions however may be made on request, but in any case, Team Xonotic must
be allowed to distribute the changes as part of the git repository, and others
must be allowed to redistribute it in form of cloned git repositories. As
stated above, no guarantees are made by Team Xonotic about licensing status of
such branches.