Pour celles et ceux que cela intéresse, le moteur Paradox3D est officiellement open-source (principalement sous GPL v3 et certaines parties sous licence MIT, CPL et Apache 2.0, voir ci-dessous):
Paradox is going Open Source!
We are thrilled to announce that Paradox is going open source on github! This is an important step toward the empowerment of game developers. We hope that this will make you more confident in using Paradox. You will have also an unique opportunity to contribute to the project and see by yourself how Paradox engine is working.
Paradox is now delivered with two licences types:
- Binary Release version
- Source version
Binary Release version
Paradox binary release (as distributed on our website, with unmodified signed assemblies) is under the "Paradox 1.x version" License Agreement.
It allows you to create games and distribute them freely and royalty-free, as long as you use the signed binary runtime.
Source version
Most of Paradox source code is released under the GPL v3 License (unless otherwise stated).
A few specific parts (stated explicitely in the source header) are released under MIT, CPL or Apache 2.0 (usually matching license of original contribution).
Some libraries (i.e. SiliconStudio.Core) will probably be converted to MIT later.
It means that if you use Paradox built from sources (either unmodified or modified), you must publish source of your game, as well as any changes to Paradox that you might have done (as per GPLv3 license).
Even for Binary Release version users, it allows to easily browse the sources and understand what's happening inside Paradox.
If you want specific license terms (i.e. use a modified and/or self-compiled version of Paradox for your project), feel free to contact us at contact@paradox3d.net
Contributions
We gladly accept external contributions. Feel free to submit us pull requests and we will consider them for inclusion.
Contributors will need to sign electronically a Contributor License Agreement, available here (based on Harmony). It allows us to use your changes in the commercial version, and relicense code easily (in case we decide to go MIT at some point for example).
Otherwise you are free to fork, as long as you maintain GPL v3 License.