Oh, that's right, I forgot OpenGameArt. I searched through all its resources once. I didn't think to visit the forum.Anyway, I got a reply from Lee Bamber. I asked:[quote]Hello Lee,I saw your repository in GitHub about an open-sourced version of the FPS Creator Classic. And in the readme you included links to multiple Asset packs free to use, even for commercial games. I thank you for contributing to the open source world like that. However I cannot find the license or a small explanation of the conditions of use of those files. I have particularly one question: are those assets, for instance textures of the Space Derelict pack, free to be used in a project that does not use the FPS Creator? Also, are we allowed to modify those assets, like converting the .dds textures in .png or the .x mesh in collada? I'd like to know that before I do anything with your files. My game project is not commercial (it's open source too) but I want to use legal resources only.Thank you in advance for your reply.Best regards[/quote]And he replied:[quote]Hi,We could not pin down a single license that covered the files. Basically, you can use the assets to make games with, in whatever tool you want to use, but you cannot make a 'game maker' from them, nor can you put them all in an asset pack and sell them as a collection. This ensures we don't have our own assets competing against TGC in the future :) Sounds like your particular project is absolutely fine, have fun with the assets and yes you can convert them to your preferred format.Best Regards,Lee.[/quote]That means that, as long as we don't make special asset packs for godot from those packs and sell them, he seems to be alright with us using and modifying them. I would feel wrong anyway to resell or redistribute their own free work for a different engine (godot in our case). Therefore I only convert and import what I need in my game.Yet, they still don't know which license they will use. Better stay careful.
