Game-file footprint unchanged: still one line in main.lua.
Three-level navigation as specified in D2: Ctrl+PageUp/Down cycles categories,
PageUp/Down cycles kinds, Shift+PageUp/Down cycles instances of that kind, Home
announces where it is.
- categories.lua: flag-first classification into Creatures, Items, Alchemy,
Interactables, Exits and Terrain features, reusing the game's own 'exit' tag
and excluding the six nameless mechanical templates.
- tracker.lua: scan, cache, navigation, announcements.
Caching keys on level name, player position and turn: position because
everything sorts by distance to the player, turn because creatures move and
containers empty. Scans run on keypress, never per frame.
FoV is respected throughout -- creatures only when currently visible, tiles when
visible or remembered -- so the tracker never becomes a cheat.
Home reports path length alongside the offset, via the game's own
calculatePathFromPlayer. Straight-line distance is misleading indoors, where a
chest three tiles north through a wall can be twenty steps away.
Corrects D4 in docs/05-decisions.md. I had claimed tile.tryInteract cleanly
separates 'the player can do something here' from scenery. It does not: 'wall'
carries a flavour-only tryInteractFunction ('You touch the wall. It's cold and
rough.'), so every wall segment was promoted into Interactables -- 13 in the
starting house, burying the chest and cauldron. Structural tiles
(blocksMovement and blocksVision) are now excluded before the tryInteract test;
containers and furniture block movement but not sight, so they survive.
12 kinds/19 instances instead of 13/32.
13/13 testbed checks, history unit tests passing.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
