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I'm trying to build a character sheet for a larp, the system is basically pick and buy, with some limitations:
there two skills that are mutally exclusive (clerical and wizardly magic), and there are skills with prerequisites.
What I would like to do is a sheet that automatically subtract the skill cost from a predefined pool, and that check the prerequisites and exclusions. The calculation part I'm fairly confident to resolve, but the prerequisite and exclusivity is eluding me. Any way to make it work?