Design: How to model / where to store relational data between classes

Posted by Walker on Game Development See other posts from Game Development or by Walker
Published on 2012-10-28T21:01:58Z Indexed on 2012/10/28 23:23 UTC
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architecture

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design-patterns

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databases

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data

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design

I'm trying to figure out the best design here, and I can see multiple approaches, but none that seems "right."

There are three relevant classes here: Base, TradingPost, and Resource. Each Base has a TradingPost which can offer various Resources depending on the Base's tech level.

Where is the right place to store the minimum tech level a base must possess to offer any given resource? A database seems like overkill. Putting it in each subclass of Resource seems wrong--that's not an intrinsic property of the Resource. Do I have a mediating class, and if so, how does it work? It's important that I not be duplicating code; that I have one place where I set the required tech level for a given item. Essentially, where does this data belong?

P.S. Feel free to change the title; I struggled to come up with one that fits.

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