Every corridor was one tile wide, which in a bullet hell is a shooting
gallery: there is no side to step to, so anything fired down it lands.
Each leg of each L now rolls its own width between 2 and 4, so a tunnel
can open up or pinch at its bend rather than every connection being the
same pipe. Carving stops one tile short of the map's outer ring, which
keeps the world sealed however close to the edge a wide tunnel runs.
Found while doing it: 45% of generated arenas had their own walls carved
open. The last corridor aimed at the door tile, which sits ON the
arena's west wall, and an L that bent the other way ran its second leg
straight down that column -- 181 of 398 arenas, measured. It now aims at
the tile outside the door and always arrives along the door's own row,
and the arena is excluded from every carve, so a wide tunnel stops at
the wall instead of eating into it.
Three tests: no corridor tile sits in a passage one tile wide, every
width in the range turns up and none falls below two, and every arena
keeps every wall tile it was drawn with. The overshoot at a bend is
cosmetic -- the legs always overlap on the inner side, so removing it
bevels the outer corner and narrows nothing -- and the comment now says
so rather than claiming otherwise.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Replaces the fixed centred arena with per-world tile geometry, which is the
foundation the remaining features sit on.
- MapGrid: tile grid with three independent flags -- blocks movement, bullets,
sight -- so a pit stops feet but not bullets or eyes, and a barricade stops
feet and bullets but not eyes. Circle collision with per-axis sliding, and
Bresenham line of sight shared by fog and aggro.
- MapGen: rooms and corridors generated from (seed, depth), with hand-authored
boss arenas from Rooms stamped in first so a corridor can never carve through
a designed fight. Reachability from spawn to boss is asserted over 40 seeds --
"usually connected" is the failure mode that ruins one run in twenty.
- Dungeons are populated at creation, per room, instead of gating on waves. You
explore and choose your fights; the run ends when the boss dies, not when the
map is swept. Boss rooms have no lock, so walking out is always available.
- Aggro: enemies need range AND line of sight, so a dungeon stays quiet until
engaged and cover actually protects.
- Hard fog, scrolling camera, and terrain rendering.
Maps are streamed per peer in chunks around that peer's player, and the seed is
deliberately NOT sent -- a client holding it could regenerate the whole dungeon,
which is a map hack for free. Stream radius (900u) is wider than view radius
(460u) because the client predicts movement against walls and simulates bullets
that die on them; the accepted cost is a cheater seeing a little further than
the fog, never the floor plan.
Partial map knowledge means wall deaths must be announced rather than derived.
A test caught the subtle half of that: out-of-bounds tiles read as WALL by
design, so checking geometry before bounds reported every bullet leaving the map
as a wall kill.
128 tests (was 103); check.sh, test.sh and smoke.sh pass. 0.26 ms/tick with 4
players and a boss, ~65x headroom.
claudeandClaude Opus 5.5