The card combination mechanic seems like an interesting and novel way to write an adventure game. Unfortunately extremely short at the moment, but looking at your code it seems like you have a good system set up to continue writing more cards/combinations in the future. Since you're not using an existing engine, I assume most of your development time went into writing the engine and you ran out of time to actually implement the content. I get it.
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Hello ! Sorry for answering late.
Yes, you understood it pretty well. It took me a couple of hours to build the mechanic and then IRL things arrived and I was unable to finish implementing the story that my French teammates wrote for this game. It's very sad but I am going to implement what they wrote as soon as I can.
Thanks a lot for your comment !