TODAY'S GOAL:

* Use d-map to create a mapping of light strength and use that to alter the value of colors in the map.
* Make it possible to visualize the d-map when I need to.

TODO:
* Neighbors needs a rewrite
* Neighbors algo isn't using greater parameter
* Look in system.cpp::draw_map for notes on a Lighting system.
* Write a method for renderer that can translate coordinates.
* Can std::any be defaulted to a noop in the events?
* Save file isn't saving gold.
* Inventory needs to be better, but need some kinds of "weapons" or other loot to get and not just gold.
* Create a few more enemy types to fight.
* Devise a more complete map/world generator that can use the loot and enemies better.
* Maybe an LOS system, but the hearing version works pretty well so far.
* Probably a system for mapping collision types to sound effects, rather than having the GUI do it.

* Write a test that generates a ton of maps then confirms there's a path from one room to every other room?
* Lua integration?

* check out SoLoud.

* BUG: When enemies die they can be overlapping another enemy.