Add support for converting generated levels to walls, and merge one into
the entity map at the beginning of the game.
There's nothing here that guarantees the character ends up *inside* the
level though (they almost always don't) so that'll have to be slotted
into the level generation process.
Implement a concrete "Creature" entity, and place one on the screen at
the game startup for testing.
This revealed a bug with drawing when getting the maximum entity
position, but that appears to be fixed now (yay)
Add a "previous message" command, triggered via ctrl+p.
I attempted here to get the message area to still take up a row of space
post-hiding the message, but failed - should revisit that at some point
Implement messages almost the same as in the Rust version, only with
YAML instead of TOML this time, and a regular old mustache template
instead of something handrolled. Besides that, pretty much everything
here is the same.
This also required making the noodles character not actually the emoji,
since the emoji being double-width means it still gets overwritten when
you walk to the right of it (D:)
Rather than overwriting entities with the same ID when appending, make
EntityMap::append actually respect the internal invariants of the map
and preserve entities from both sides, with no regard for their id.
Add a new Wall entity, and allow converting generated levels to entity
maps containing them, then finally displaying them using some of
the (now expanded) box drawing machinery.
Add a generic text-prompt system to the Game, and use it to prompt the
character for their name on startup. There's also a Promise type in
util, which is used for the result of the prompt.
Add a new Item raw type and entity type, with preliminary, basic support
for food. There's a really frustrating toml-rs bug that prevents writing
these nicely as toml right now, so I also added support for mixing JSON
and TOML in a single config dir
Add a system for statically-included entity raws (which necessitated
making a deserializable existential Color struct) and test it out by
initializing the game (for now) with a single on-screen gormlak.
Implement a global map of entities, which allows referencing by either
position or ID and updating the positions of existent entities, and put
the character in there.
