Different parts of Rock Rats are made available with different permissions.
The actual game source code files (all the .swift files in the
repository) were written by Daniel Long and David Long and are
licensed under the MIT license. You have permission to make copies of
the files, alter them, use them in your own projects, and even make
money from those projects. But you have to reproduce the copyright
notice below, and if there are problems that result from your use of
the code, then it's not our fault.
Almost all of the game assets in the repository (basically the graphics, sound, and font files) were developed by Kenney and are in the public domain. A few assets are from other public domain sources, and a few were created by or altered by us; these are also in the public domain. Public domain assets can be used with no restrictions. However, we have donated to support Kenney and the work he does for independent game developers. If you find his assets useful for your projects, we encourage you to do the same.
Copyright © 2020 Daniel Long and David Long
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.