Resource Map with dynamic resources and triggers

[Zomis]

Write a class that can keep track of "resources", i.e. Int values that can change over time and can be influenced by other effects.

This class should be able to replace Caravan in Spice Road, and Money in Splendor.

• Dynamic modifiers for values ("This thing has X equal to ...")
• Dynamic modifiers for values ("Other things have one additional X")
• Listeners ("Whenever you get X, other stuff happens...")
• Modifiers for when values are changing ("Whenever X changes by Y, gain 1 extra")

This class can be created individually and can be posted for review.

Related possible future features:

• Also support wildcards, so that you can have a resource that counts as "one of X/Y/Z" (such as a wildcard in Splendor).
• Some resources can even count as "all of X/Y/Z" or "two of X/Y/Z" (so if you use/remove the X one, you will have "one of Y/Z" left)
• Different games may have different options for how to pay. So support priorities within the resources (to make wildcards be used first/last for example), and add a way to find out "How can I pay 3 X and 1 Y?"

[Zomis]

Wildcards and resources that counts as "one of" or "all of" is currently no need to support, and I also see a very limited use-case for that. There might be some use-cases for it, but it is more coupled with actions than with resource maps themselves.

Listeners have a high potential use-case in for example in Alchemists, to things like "When you gain reputation, gain one more reputation" (although that also kinda includes a modifier)

Modifiers have a use-case in Cardshifter-like games and for potential advanced rules for other games, such as Splendor: "For the next 3 turns you have 1 wildcard to use"