Tidy the t93 resting-face spill: shared open-cell and fall helpers, no behaviour change

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-28 23:35:30 -04:00
parent bd22e453ca
commit 780216b174
2 changed files with 41 additions and 28 deletions
@@ -7,6 +7,18 @@ open or not verified. Keep each entry short; the git history has the details.



+## 2026-10-28: t93 round 3 review and tidy (Claude)
+
+- Checked in the real game (WebGPU Chromium, real mouse): hovering the bot 100 grains up and
+  blowing sand straight above it at width 6 buries the bot and builds the owner's vertical wall.
+  Old rules: the wall still stands 5 s after release. New rules: a slope within 5 s.
+- Refactor only, no behaviour change (world hash identical before and after): one `powderOpen`
+  test and one `powderFall` loop replace six copies of the open-cell check and three scan loops;
+  comments now say why resting faces need the spill and what the avalanche flag means.
+- Checked: the new flag bits 8/16 collide with nothing (the renderer reads only F_NAT); stone
+  rubble is free-flowing (STICK 1) so it gets the rule; narrow towers and rubble or loose-dirt
+  mixes collapse on both old and new rules. Full suite with browser: ALL PASSED.
+
 ## 2026-10-28: t93 round 3, nozzle-built resting sand faces (Codex)

 - Reproduced the owner's continuous straight-up radius-6 sand nozzle recipe, not a