From: Bill Kelly <billk@...>
Date: 2010-02-16T15:03:56+09:00
Subject: Re: Ruby "Save Game" function

Michael Brodeur wrote:
> 
> I am currently working on a text-based RPG and I wanted to implement a
> function that allowed the user to save their game at any point, so that
> it could be resumed later. Of course, this would need to be complimented
> by a load function that would resume the game at that previous state.

For starters, I'd suggest looking at PStore and YAML::Store.

PStore:

  http://ruby-doc.org/stdlib/libdoc/pstore/rdoc/classes/PStore.html

YAML::Store exmaple:

  http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/113207


PStore and YAML::Store are essentially equivalent in functionality,
the difference is PStore saves objects in Ruby's binary marshal
format, whereas YAML::Store saves objects in human-readable YAML
text format.  And the trade-off is that YAML is slower than marshal.


Further possibilities for key/value stores with Ruby:

  http://www.engineyard.com/blog/2009/key-value-stores-in-ruby/
  http://www.engineyard.com/blog/2009/key-value-stores-for-ruby-part-2-tokyo-cabinet/
  http://www.engineyard.com/blog/2009/cassandra-and-ruby-a-love-affair/
  http://www.engineyard.com/blog/2009/key-value-stores-for-ruby-part-4-to-redis-or-not-to-redis/
  http://www.engineyard.com/blog/2009/mongodb-a-light-in-the-darkness-key-value-stores-part-5/
  http://www.engineyard.com/blog/2009/key-value-stores-in-ruby-the-wrap-up/


Hope this helps,

Bill