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The RNRX coma: tacks are scattered, not thrown

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Automaton II froze for three turns of game four: pathDenial proposed
HANDFUL OF TACKS on a square four steps away, the engine refused the
cast every turn ("you must be adjacent to scatter tacks"), and the
refusal-fallback loop read as a coma. The denial planner now offers
tacks only at the caster's feet — and the walker learns tacks are a
floor hazard, so a bot no longer mines its own doorstep and strolls
straight into it (also RNRX, seq 194-195). The frozen ledger moment
replays cured; a regression pins the planner's proposals to
engine-accepted commands. 288 tests; 24 ledgers verified.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015RCWSTnb1KYTPyL4GmhGnF
This commit is contained in:
Eric Wagoner
2026-08-26 12:04:57 -04:00
co-authored by Claude Fable 5
parent 6d88b35516
commit 75f1217c77
2 changed files with 39 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
packages/engine/src/automaton.ts
+7 -2
View File
@@ -370,7 +370,12 @@ function pathDenial(view: GameView): Command | null {
);
}
// Never brick the square the treasure needs to stay reachable on.
if (filler && cellKey(b) !== cellKey(goal) && cellCastable(cellKey(b))) {
// TACKS are scattered at the caster's feet ("you must be adjacent"),
// not thrown — offering a distant square wedges the whole brain on
// an eternally refused cast.
const fillerReaches = !filler || filler.cardId !== "handful-of-tacks" ||
Math.abs(b.x - me(view).position.x) + Math.abs(b.y - me(view).position.y) <= 1;
if (filler && fillerReaches && cellKey(b) !== cellKey(goal) && cellCastable(cellKey(b))) {
consider(
{ type: "cast", instanceId: filler.instanceId, target: { kind: "cell", cell: b } },
{ avoidCell: cellKey(b) },
@@ -609,7 +614,7 @@ function pathToward(
const hazard = view.squareContents[k]?.kind;
if (!opts.throughHazards &&
(hazard === "pit" || hazard === "ooze" || hazard === "thornbush" ||
hazard === "rosebush" || hazard === "slime")) continue;
hazard === "rosebush" || hazard === "slime" || hazard === "tacks")) continue;
if (opts.avoidNearEnemies && nearEnemy(to)) continue;
next.push(to);
}