There is this great game called DDNet. https://github.com/ddnet/ddnet which is a fork of a dead game, but DDNet has been around for many years and growing.

I just want to make possibly a new mode that, in concept, should still be doable for a beginner C /Python coder like myself (though experienced in dozen ), where certain 'entities' (e.g. walls, spikes, etc.) or entity tiles of images are recognised and functional (wall would stop you, spike would kill you, etc. -- an entity that is not being used is used in another mode) and the changes to the code should be minimal. Basically, when the character/user touches that certain entity, it invokes a code that is already in place for a different entity, just slightly different, which I would like to append to the code.

But approaching such a repo of years of works with many contributors is rather overwhelming.

My question ultimately boils down to, is there some framework or instructions on how to transfer someone else's project for myself?