Three Dollar Quill

So, the good news is, I came up with a bunch of simplifications that enhance correctness and type coverage, though probably not, like, speed. The bad news is, when I was testing them out, I discovered that I somehow broke a completely unrelated code path. I chose to focus on getting the code to work, which in this case meant replacing some math and a library function call with a different library function call.

Now that I've got those changes done, here's some high-priority ones:

• Use the GameMap component
• Make the randomness controllable
• Create a replay format
• See if the replays can be used to work with tests

I'll probably put other stuff above the last one, once I get to it. In part because it'll allow me to do my own version of some of the part 11 stuff. Let's see what that looks like:

• Use the GameMap component
• Add game_map field to the Position component
• Add integer dungeon_level to GameMap
• Create Teleporter component, which has either a target entity, or a callback to create a target entity. (Maybe create TeleporterUp and TeleporterDown?)
• Create Stairs sprites
• Create events for stairs
• Finally do the method-extraction rewrite of the Game class
• Write handlers for stairs actions
• Add stairs to RenderOrder
• Various tweaks to rendering
• Add wait command

There's also level-related stuff, but I want to take care of this half of the part first.

Looking over the remaining tutorial, I believe I can finish things up relatively quickly, do some code polish, and then start figuring out what I want to adapt this code into.