Comunidad Game Maker

The code of _________ is issued under the GNU General Public License (GPL), version 2 or later. By contributing code or content to the project, you agree for it to be distributed under GPL or whatever other open-source license the project maintainers choose in the future.

The content of the _________ wiki is under the GNU Free Documentation License (GFDL). By contributing content to the wiki, you agree for the code to be distributed under GFDL or whatever other open-source documentation or content license the project maintainers choose in the future.

(The future-choice qualifier is so we have a way to recover should technical flaws in GPL or GFDL leave us legally unable to distribute the code under those licenses. By "open-source license" we mean one complying with the Open Source Definition.)

As the project owners, with the right to issue copies of the code or content under dual or multiple licenses, the _________ maintainers specifically grant the right to copy content from game to wiki or wiki to game, said copy acquiring only the license obligations associated with the destination.

See also
Legal Notice Regarding Contributions (forum)



The "contributions" refer to any digitized images, music, or data files which are posted on this forum, and to which you own the rights. Unless otherwise stated, the posting of content suitable for submission to the game implies that such content is intended for inclusion in the game.


Posting any contributions to this game on this web forum is a tacit acceptance of the fact that you are placing them under the GNU General Public License.

You maintain your own full rights to the contributions, and may continue whatever you, the owner, wish to do with them, but you have given us the right to use them under the limitations of the GPL.

Do note that posted material explicity listed as a demonstration of previous work (intended to showcase your skills as a potential contributor to the project) is exempt from this, as it is not a contribution to the game.


Please do not post any contributions to which you do not own the rights, or any derivative work under copyright law. This has been done before, and we cannot accept such works.

Work to which you do not hold the rights may be posted under the "fair use" exemption, but not for the purposes of contribution to this game. The "fair use" exemption was created to allow things such as commentary, parody, research and education about copyrighted works without the permission of the author. Should you make such a contribution, be sure it is legal, and be sure to accredit the copyright holder.


Las rayas es para que no sepáis de donde es, sorry.
Es que el traductor de google me dice algo raro, y no se si fiarme o no. Por eso pregunto aquí, que se que hay varios que saben bien de ingles.
A mi de este juego, me interesa conseguir alguna imágenes, no el código. Y no veo que diga nada.
Gracias....


You can do that if you give your game a GPL license. That means that you will have to post your source code somewhere (or just send it to anyone who asks for it). As far as I know, most android stuff is in java whose source code can be read, so it's okay. And also to expect that others will re-use your source code in other GPL stuff (but that will allow them to claim that they have written it). GPL licence does not prevent you from selling the game, so you're free to have in-game purchases.

Alternatively, you can contact the artists to allow you to give additional licences to their images.


Por lo que estoy leyendo y mirando, etcc, si cojo algo de un software gpl o gnu, mi software tiene que ser por entero gpl o gnu??
Alguno sabe del tema?
Y si al final decidiera hacerlo así, para poder usar cosas de esos software, como se haría?, tendría que poner en alguna web o por email, el código fuente de mi juego??, por entero?, aunque solo cogiera las imágenes y música, y nada de código??
No termino bien de entender el tema. Alguien me lo aclara?? Ahh, y tendría que incluiar algún archivo con la licencia o algo por el estilo?

Según wikipedia, si usas material con licencia GPL, y tu software no se va a distribuír, no es necesario lanzarlo con licencia GPL, pero si el software va a ser distribuído (no importa que sea gratuito o de pago) si habría que lanzarlo bajo licencia GPL, y el código fuente debe ponerse a disponibilidad de los usuarios por entero.

No sé de licencias, pero me parece que en tu caso, no aplica esto de licencias GPL, porque ésta se refiere al uso de código, no de material audiovisual (sonidos, imágenes). Si piensas extraer contenido multimedia del juego, creo que es una sunto completamente distinto y deberias contactar al autor o quien ostente los derechos de ese material (a menos que el material sea libre y se pueda usar sin limitaciones por cualquier persona)

You can do that if you give your game a GPL license. That means that you will have to post your source code somewhere (or just send it to anyone who asks for it). As far as I know, most android stuff is in java whose source code can be read, so it's okay. And also to expect that others will re-use your source code in other GPL stuff (but that will allow them to claim that they have written it). GPL licence does not prevent you from selling the game, so you're free to have in-game purchases.

Alternatively, you can contact the artists to allow you to give additional licences to their images.

Legend of the Invincibles - single player campaign, trying to be an expansion to regular, where units can advance indefinitely, gear becomes an important factor and tons of new abilities increase the game's variety.




You can do that if you give your game a GPL license.

That is highly debatable. Images and music could be considered "mere aggregation" (indeed, AFAIK that is the mainstream view), and thus the source code of the game wouldn't need to be disclosed.


As far as I know, most android stuff is in java whose source code can be read, so it's okay.

:hmm: I think that actually doesn't really count. It's true that java bytecode can be decompiled, but that is not the "preferred form for making modifications".

I think it even wouldn't be okay if you took the source code, intentionally obfuscated it, compiled it and released that source and binary. Because, the obfuscated code is not the preferred form for making modifications. Similarly I think you can't encrypt the source code and release the cipher text. It's not just "bad behavior that goes against the spirit of free software", I think it's actually just prohibited by the GPL.


It's true that java bytecode can be decompiled, but that is not the "preferred form for making modifications".
My information may be wrong or outdated, but I was told (by a guy who knew java) that most android apps can be decompressed getting the exact source code even with comments. Not like the decompiled C/C++ code that is very unreadable.
Legend of the Invincibles - single player campaign, trying to be an expansion to regular Wesnoth, where units can advance indefinitely, gear becomes an important factor and tons of new abilities increase the game's variety.



Hmm, tbh it's been a really long time since I used java.

Back in the day, when you decompile you would get back similar code more or less but the variable names would all be different and mechanically generated. Losing the variable names can often make it a lot harder to figure what is going on in some complex java program. But maybe they changed it.




Postby arcangelcaos » Today, 4:21 pm

Hello, we go to see. The of java is debatable, but what to my interests me, is if I can use the images and music of this game to realise mine. Afterwards I suppose that I have to put the licence LGPL or GPL to my game. But I have to put it to everything, although it do not use the code source, or only to the images and music of the game?
And if it is all the game, the code source can sell , or always to to be free, since the game will be free?





The whole game including the images is GPL. The source code of images clearly isn't very concealable, so the GPL on images mostly means that others can re-use them in other GPL projects. If they weren't GPL, there would be nothing allowing you to reuse them at all.

If you make the game GPL, all you need to do is to send the source code to anyone who asks for it and allow them to propagate it (as long as they don't remove the GPL licence). If somebody wanted to avoid paying, he would have to edit the source code to make the purchases free and that requires skill that a vast majority of possible players lack, so don't worry about losing income because of it (the work needed for that might exceed the price of the purchase).

Legend of the Invincibles - single player campaign, trying to be an expansion to regular Wesnoth, where units can advance indefinitely, gear becomes an important factor and tons of new abilities increase the game's variety.



arcangelcaos  Posts: 3 Joined: Today, 10:21 am
Sorry for the inconvenience, but my English is not very good. That part I don't understand exactly which means. I have understood that if uses these images GPL must be GPL, but and the source code if I don't use any GPL code?





The GPL says that you can reuse, modify, and redistribute GPL content, and charge money for it if you wish, but that if you make a new copyrightable work (derivative work) using that content, the new work can only be distributed under the terms of the GPL.

If you can think of the game engine as being one copyrightable work, and the game itself as being another, separate work, then you can have one of them under one license and one under another. So you could use some GPL art with a non-GPL engine.

Copyright law is sometimes complicated though, and it varies from country to country. I'm not sure if *all* games can be said to have an "engine" in this manner.

For many countries and many games, it seems that that interpretation works, since many people do it.

If for some reason in your case that interpretation doesn't work, then all of them would have to be under the same license I guess.

I am not a lawyer.




iceiceice wrote:
The GPL says that you can reuse, modify, and redistribute GPL content, and charge money for it if you wish, but that if you make a new copyrightable work (derivative work) using that content, the new work can only be distributed under the terms of the GPL.

If you can think of the game engine as being one copyrightable work, and the game itself as being another, separate work, then you can have one of them under one license and one under another. So you could use some GPL art with a non-GPL engine.

Copyright law is sometimes complicated though, and it varies from country to country. I'm not sure if *all* games can be said to have an "engine" in this manner.

For many countries and many games, it seems that that interpretation works, since many people do it.

If for some reason in your case that interpretation doesn't work, then all of them would have to be under the same license I guess.

I am not a lawyer.

I agree.




_______________________________________________________________________________________________

todo eso de hay es el rollo que me ha metido la gente del juego, dado que es un juego libre, cada cual puede cogerlo y modificarlo a su antojo, sin limitaciones, siempre que se distribuya con GPL. Pero a mi me surge la duda, que yo solo voy a coger las imágenes, no el juego en si. Es un tema un poco delicado.


PD: Siento el rollazo, pero es para tenerlo claro y empezar con el proyecto o no.

Según el texto, todo el juego, incluídas las imágenes son GPL, por lo que si los usas, tu proyecto debe ser lanzado como gpl. Si no lo lanzas como GPL, el contenido no lo puedes usar.

Gracias, ahora me queda decidir si quiero hacerlo así o no.