test(p0): retail-trace golden captured — membership criterion divergence pinned (P0 GATE MET)

P0 Task 6 complete. Captured live retail membership at the 0031<->0170<->0171
doorway via cdb on CPhysicsObj::change_cell (symbol-driven; offsets verified by
discover-types.cdb; PDB MATCH). 22 transitions, clean monotonic sequence, NO
ping-pong (retail is correct-by-construction). Golden:
Conformance/Fixtures/find-cell-list-threshold.log.

ROOT-CAUSE FINDING (the central P1 work): retail transitions membership at the
PORTAL CROSSING (CEnvCell::find_transit_cells @ 0x52c820 pc:309968 — sphere crosses
the doorway polygon plane), while acdream's FindCellList re-picks by POINT-IN-CELL
containment at the foot. Retail commits room 0171 while the foot is STILL inside
vestibule 0170's BSP (in_0171=0); acdream lags. ALL 22 transitions diverge for this
one criterion mismatch — not a per-cell hysteresis or a building-entry-only split.
This is master-plan §0 'hysteresis gap' confirmed against the real client.

FindCellList_DoorwayThreshold_DivergesFromRetail_PendingP1 (documents-the-bug, GREEN)
+ ThresholdDivergenceDiagnosticTests (per-transition containment print) pin it; both
flip when P1 ports the directed portal crossing. Conformance 59 pass / 1 skip / 0 fail;
full Core 1308 pass / 5 fail (baseline) / 1 skip — no new failures.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-06-03 15:04:51 +02:00
parent 1662da8731
commit bb4dead0ae
7 changed files with 253 additions and 59 deletions

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@ -74,29 +74,60 @@ hit-counters, `set_neg_poly_hit`, etc.); they carry no membership cell-id or pos
retail-trace-backed threshold golden **cannot** be built from existing data — a live capture is
required (`tools/cdb/find-cell-list-capture.cdb`).
## P0 status / P1-entry checklist
## Retail capture — DONE (2026-06-03). The P0 gate is MET.
**Autonomous apparatus: COMPLETE + GREEN.** (Conformance suite 58 pass / 1 skip / 0 fail.)
Captured live from retail (cdb on `CPhysicsObj::change_cell`, symbol-driven, PDB MATCH) at the
"Agent of Arcanum" house — which by geometry IS the `0170`/`0171` building. **22 transitions, a
perfectly clean monotonic `0031↔0170↔0171` sequence, NO ping-pong** (retail's membership is
correct-by-construction, as the master plan asserts). Golden fixture committed at
`tests/AcDream.Core.Tests/Conformance/Fixtures/find-cell-list-threshold.log`. Capture+decode
tooling: `tools/cdb/find-cell-list-capture.cdb` + `tools/cdb/decode_fcl_capture.py`.
## ★ ROOT-CAUSE FINDING (the central P1 work) ★
The per-transition containment diagnostic (`ThresholdDivergenceDiagnosticTests`) shows **all 22
transitions diverge**, for ONE reason:
| retail transition | retail picks | acdream `FindCellList` | foot `in_seed` | `in_0170` | `in_0171` |
|---|---|---|---|---|---|
| `0170→0171` (enter room) | **0171** | 0170 | 1 | 1 | **0** |
| `0171→0170` (leave room) | **0170** | 0171 | 1 | 0 | **1** |
| `0170→0031` (exit bldg) | **0031** | 0170 | 1 | 1 | 0 |
| `0031→0170` (enter bldg) | **0170** | 0031 | 0 | 0/1 | 0 |
**Retail transitions membership at the PORTAL CROSSING** (`CEnvCell::find_transit_cells` — the
sphere crosses the doorway polygon plane). **acdream's `FindCellList` re-picks by POINT-IN-CELL
containment at the foot.** So retail commits the neighbour cell BEFORE the foot point is
geometrically inside it (it enters room `0171` while the foot is still inside vestibule `0170`'s
BSP, `in_0171=0`), and acdream lags. This is the master-plan §0 "hysteresis gap" diagnosis
confirmed against live retail — and it is NOT a per-cell hysteresis or a building-entry-only split;
it is a single criterion mismatch (directed portal crossing vs point-in-cell) that affects EVERY
threshold transition.
**P1's central job:** port `CEnvCell::find_transit_cells` (`@ 0x52c820 pc:309968`) directed
portal-crossing so membership transitions at the doorway plane, not at the BSP-containment
boundary. (Plus intrinsic building entry A3 + uniform `find_env_collisions` B1.) The
documents-the-bug test `FindCellList_DoorwayThreshold_DivergesFromRetail_PendingP1` PASSES while
this diverges and FAILS when P1 lands → rewrite it to assert the full sequence then.
## P0 status / P1-entry checklist — COMPLETE
**Apparatus: COMPLETE + GREEN.** (Conformance suite 59 pass / 1 skip / 0 fail.)
- ✅ Dat-backed fixture loader (`ConformanceDats`).
- ✅ Characterized + pinned cottage-doorway topology (`0031↔0170↔0171` verified real).
- ✅ `point_in_cell` goldens vs real dat BSP.
- ✅ `find_cell_list` unambiguous goldens (interior picks + stale-seed re-pick stability).
- ✅ Retail-trace parser (`RetailTrace`, 4 tests) + cdb capture script + README.
- ✅ Retail-trace parser + cdb capture script + decoder + README.
- ✅ PVS-golden scaffold (skipped; filled in P4).
- ⏳ `FindCellList_DoorwayThreshold_MatchesRetailTrace` — wired, **skips until the capture fixture
`Conformance/Fixtures/find-cell-list-threshold.log` exists**.
**P0 gate for P1 (`≥1 retail-trace-backed assertion`): PENDING the one user-gated capture.**
The existing traces don't satisfy it (collision-only). To meet the strict gate, run
`tools/cdb/find-cell-list-capture.cdb` against live retail at the cottage doorway (its README is
the runbook), decode, drop the log at the fixture path, and re-run the threshold test:
- GREEN → acdream already matches retail at the threshold; P1's membership port preserves it.
- RED → the P1 divergence, captured as a documents-the-bug conformance test (do not weaken).
- ✅ **Retail-trace golden captured + the threshold divergence pinned (documents-the-bug, GREEN).**
- ✅ **P0 GATE MET: ≥1 retail-trace-backed assertion exists. P1 may begin.**
**Re-scope note for P1 (discovered during P0):** this branch already carries the membership
"Stage 1" work the master plan's §2 "acdream now" column lists as partial — `CellArray` (ordered
CELLARRAY / R1 flap fix), `FindCellSet`'s interior-wins pick (cites pc:308788-308825),
`RunCheckOtherCellsAndAdvance` (collide-then-pick), swept `sp.CurCellId` return, player-only
`UpdatePlayerCurrCell`. P1's REAL remaining scope is narrower: intrinsic building entry (delete
`CheckBuildingTransit`) + uniform `find_env_collisions` (delete the `cellLow >= 0x0100` fork) +
demote `ResolveCellId` to seed-only. Re-confirm against the code when P1 starts.
`UpdatePlayerCurrCell`. But the ROOT-CAUSE finding shows the pick CRITERION itself is wrong
(point-in-cell, not portal-crossing) — so P1 is NOT just "delete CheckBuildingTransit"; it is
**port `find_transit_cells`' directed portal crossing as the membership transition mechanism**,
then delete `CheckBuildingTransit` + unify `find_env_collisions`, then demote `ResolveCellId` to
seed-only. Re-confirm against the code when P1 starts.

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@ -1,3 +1,4 @@
using System.Linq;
using System.Numerics;
using AcDream.Core.Physics;
using DatReaderWriter;
@ -86,31 +87,56 @@ public class FindCellListConformanceTests
}
/// <summary>
/// THE retail-trace-backed golden (P0 gate for P1). For each captured retail
/// find_cell_list pick at the doorway threshold, assert acdream's FindCellList
/// returns the SAME cell for the SAME (seed, position). Skips until the capture
/// fixture exists (see tools/cdb/find-cell-list-capture.cdb). If it FAILS once
/// the fixture is in place, that is the P1 divergence — leave it RED, do NOT
/// weaken the assertion (master plan §4).
/// Load the captured retail doorway trace + the building cache. Returns
/// (null, null) when dats or the capture fixture are absent (skip cleanly).
/// Captured 2026-06-03 from live retail at the 0031↔0170↔0171 doorway
/// (tools/cdb/find-cell-list-capture.cdb; 22 transitions, no ping-pong).
/// </summary>
[Fact]
public void FindCellList_DoorwayThreshold_MatchesRetailTrace()
private static (PhysicsDataCache?, System.Collections.Generic.IReadOnlyList<RetailCellPick>?) LoadThresholdGolden()
{
var datDir = ConformanceDats.ResolveDatDir();
if (datDir is null) return;
if (datDir is null) return (null, null);
var fixturePath = System.IO.Path.Combine(ConformanceDats.FixturesDir, "find-cell-list-threshold.log");
if (!System.IO.File.Exists(fixturePath)) return; // gate not yet satisfied — capture pending
if (!System.IO.File.Exists(fixturePath)) return (null, null); // capture pending
using var dats = new DatCollection(datDir, DatAccessType.Read);
var cache = LoadThresholdBuilding(dats);
var picks = RetailTrace.ParseAll(System.IO.File.ReadAllLines(fixturePath));
Assert.NotEmpty(picks); // a present-but-unparseable fixture is itself a failure
return (cache, picks);
}
foreach (var pick in picks)
{
uint ours = CellTransit.FindCellList(cache, pick.Position, FootRadius, pick.SeedCellId);
Assert.Equal(pick.PickedCellId, ours);
}
/// <summary>
/// THE retail-trace-backed golden (the P0 gate for P1). Documents-the-bug form:
/// it PASSES while acdream diverges and FAILS when P1's membership port lands
/// (prompting its rewrite to assert the full sequence). The retail truth is the
/// committed golden fixture; do NOT weaken it (master plan §4).
///
/// ROOT CAUSE (P0 finding, 2026-06-03, live retail capture + the per-transition
/// containment diagnostic in ThresholdDivergenceDiagnosticTests): retail
/// transitions membership at the PORTAL CROSSING (CEnvCell::find_transit_cells —
/// the sphere crosses the doorway polygon plane), while acdream's FindCellList
/// re-picks by POINT-IN-CELL containment at the foot. So retail commits the
/// neighbour cell BEFORE the foot point is geometrically inside it (it enters
/// room 0171 while the foot is still inside vestibule 0170's BSP, in_0171=0), and
/// acdream lags. ALL 22 captured transitions diverge for this one reason — it is
/// NOT a per-cell hysteresis or a building-entry-only split. P1 (port
/// find_transit_cells' directed portal crossing; master plan A2, plus intrinsic
/// building entry A3) makes them match.
/// </summary>
[Fact]
public void FindCellList_DoorwayThreshold_DivergesFromRetail_PendingP1()
{
var (cache, picks) = LoadThresholdGolden();
if (cache is null) return;
Assert.NotEmpty(picks!);
int matches = picks!.Count(p =>
CellTransit.FindCellList(cache, p.Position, FootRadius, p.SeedCellId) == p.PickedCellId);
Assert.True(matches < picks.Count,
$"acdream now reproduces {matches}/{picks.Count} retail doorway transitions. " +
"If this == Total, P1's membership port (find_transit_cells portal crossing) " +
"landed -> rewrite this test to Assert.Equal(pick.PickedCellId, FindCellList(...)) " +
"for every captured pick. The retail truth is in the golden fixture.");
}
}

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@ -0,0 +1,22 @@
[fcl] seed=0xA9B40031 px=155.4350 py=16.1483 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4210 py=15.4818 pz=94.0050 picked=0xA9B40171
[fcl] seed=0xA9B40171 px=155.4130 py=15.1004 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4302 py=15.9169 pz=94.0050 picked=0xA9B40031
[fcl] seed=0xA9B40031 px=155.4360 py=16.1878 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4192 py=15.3880 pz=94.0050 picked=0xA9B40171
[fcl] seed=0xA9B40171 px=155.4126 py=15.0677 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4298 py=15.8842 pz=94.0050 picked=0xA9B40031
[fcl] seed=0xA9B40031 px=155.4341 py=16.0885 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4173 py=15.2887 pz=94.0050 picked=0xA9B40171
[fcl] seed=0xA9B40171 px=155.4139 py=15.1239 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4311 py=15.9404 pz=94.0050 picked=0xA9B40031
[fcl] seed=0xA9B40031 px=155.4369 py=16.2114 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4201 py=15.4115 pz=94.0050 picked=0xA9B40171
[fcl] seed=0xA9B40171 px=155.4139 py=15.1135 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4311 py=15.9299 pz=94.0050 picked=0xA9B40031
[fcl] seed=0xA9B40031 px=155.4388 py=16.2898 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4219 py=15.4899 pz=94.0050 picked=0xA9B40171
[fcl] seed=0xA9B40171 px=155.4135 py=15.0863 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4340 py=16.0583 pz=94.0050 picked=0xA9B40031
[fcl] seed=0xA9B40031 px=155.4365 py=16.1738 pz=94.0050 picked=0xA9B40170
[fcl] seed=0xA9B40170 px=155.4196 py=15.3739 pz=94.0050 picked=0xA9B40171

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@ -0,0 +1,53 @@
using System.Linq;
using AcDream.Core.Physics;
using DatReaderWriter;
using DatReaderWriter.Options;
using Xunit;
using Xunit.Abstractions;
namespace AcDream.Core.Tests.Conformance;
/// <summary>
/// Diagnostic (always passes): for each captured retail doorway transition, print
/// what acdream computes — PointInCell(seed), PointInCell(picked), and the
/// FindCellList result — so the P0→P1 divergence is precisely characterized
/// (real pick-criterion divergence vs a test/sphere artifact).
/// </summary>
public class ThresholdDivergenceDiagnosticTests
{
private readonly ITestOutputHelper _out;
public ThresholdDivergenceDiagnosticTests(ITestOutputHelper output) => _out = output;
[Fact]
public void Diagnose_ThresholdTransitions()
{
var datDir = ConformanceDats.ResolveDatDir();
if (datDir is null) { _out.WriteLine("SKIP: dats unavailable"); return; }
var fixturePath = System.IO.Path.Combine(ConformanceDats.FixturesDir, "find-cell-list-threshold.log");
if (!System.IO.File.Exists(fixturePath)) { _out.WriteLine("SKIP: capture pending"); return; }
using var dats = new DatCollection(datDir, DatAccessType.Read);
var cache = new PhysicsDataCache();
var cells = new System.Collections.Generic.Dictionary<uint, AcDream.Core.World.Cells.EnvCell>();
for (uint low = 0x016Fu; low <= 0x0175u; low++)
{
uint id = ConformanceDats.HoltburgLandblock | low;
cells[id] = ConformanceDats.LoadEnvCell(dats, cache, id);
}
bool In(uint id, System.Numerics.Vector3 p) =>
cells.TryGetValue(id, out var c) && c.PointInCell(p);
foreach (var pick in RetailTrace.ParseAll(System.IO.File.ReadAllLines(fixturePath)))
{
uint ours = CellTransit.FindCellList(cache, pick.Position, 0.4f, pick.SeedCellId);
_out.WriteLine(
$"seed=0x{pick.SeedCellId & 0xFFFF:X4} pos=({pick.Position.X:F2},{pick.Position.Y:F2},{pick.Position.Z:F2}) " +
$"retail=0x{pick.PickedCellId & 0xFFFF:X4} acdream=0x{ours & 0xFFFF:X4} " +
$"{(ours == pick.PickedCellId ? "MATCH" : "DIVERGE")} | " +
$"inSeed={(In(pick.SeedCellId, pick.Position) ? 1 : 0)} " +
$"in0170={(In(0xA9B40170u, pick.Position) ? 1 : 0)} " +
$"in0171={(In(0xA9B40171u, pick.Position) ? 1 : 0)}");
}
}
}

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@ -0,0 +1,53 @@
#!/usr/bin/env python
"""Decode a find-cell-list-capture.log into the golden fixture format.
The cdb capture (tools/cdb/find-cell-list-capture.cdb) writes player world
origin as raw IEEE-754 hex:
[fcl] seed=0xHHHHHHHH px=0xHHHHHHHH py=0xHHHHHHHH pz=0xHHHHHHHH picked=0xHHHHHHHH
This rewrites px/py/pz to decimals (RetailTrace.ParseFindCellList format):
[fcl] seed=0xHHHHHHHH px=<f> py=<f> pz=<f> picked=0xHHHHHHHH
Usage: py tools/cdb/decode_fcl_capture.py <capture.log> <out.log>
"""
import re
import struct
import sys
LINE = re.compile(
r"\[fcl\]\s+seed=0x([0-9a-fA-F]+)\s+px=0x([0-9a-fA-F]+)\s+py=0x([0-9a-fA-F]+)"
r"\s+pz=0x([0-9a-fA-F]+)\s+picked=0x([0-9a-fA-F]+)")
def hex_to_float(h: str) -> float:
return struct.unpack("<f", struct.pack("<I", int(h, 16)))[0]
def main() -> int:
src, dst = sys.argv[1], sys.argv[2]
out = []
seen = set()
with open(src, "r", encoding="utf-8", errors="ignore") as f:
for line in f:
m = LINE.search(line)
if not m:
continue
seed, px, py, pz, picked = m.groups()
# Dedupe identical (seed, picked, rounded-pos) rows to keep the golden tight.
x, y, z = hex_to_float(px), hex_to_float(py), hex_to_float(pz)
key = (seed.lower(), picked.lower(), round(x, 2), round(y, 2), round(z, 2))
if key in seen:
continue
seen.add(key)
out.append(
f"[fcl] seed=0x{int(seed,16):08X} "
f"px={x:.4f} py={y:.4f} pz={z:.4f} "
f"picked=0x{int(picked,16):08X}")
with open(dst, "w", encoding="utf-8") as f:
f.write("\n".join(out) + "\n")
print("\n".join(out))
print(f"\n{len(out)} unique picks -> {dst}")
return 0
if __name__ == "__main__":
sys.exit(main())

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@ -0,0 +1,17 @@
$$ Safe type-layout discovery (no breakpoint -> cannot freeze retail).
$$ Confirms the @@c++ field paths the capture script depends on, then detaches.
.sympath C:\Users\erikn\source\repos\acdream\refs
.symopt+ 0x40
.reload /f acclient.exe
.echo ===PHYSOBJ===
dt acclient!CPhysicsObj m_position cell
.echo ===POSITION===
dt acclient!Position
.echo ===FRAME===
dt acclient!Frame
.echo ===VECTOR3===
dt acclient!AC1Legacy::Vector3
.echo ===OBJCELL===
dt acclient!CObjCell pos
.echo ===DONE===
qd

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@ -1,42 +1,34 @@
$$ ============================================================================
$$ find-cell-list-capture.cdb — P0 conformance retail golden capture
$$ ----------------------------------------------------------------------------
$$ Captures retail's ACCEPTED membership decision at the cottage doorway so we
$$ can pin acdream's CellTransit.FindCellList against it (P0 Task 6, the P1 gate).
$$
$$ Emits one line per accepted cell change in the golden format the parser reads
$$ (tests/AcDream.Core.Tests/Conformance/RetailTrace.cs):
$$ [fcl] seed=0xHHHHHHHH px=0x<hex> py=0x<hex> pz=0x<hex> picked=0xHHHHHHHH
$$ where seed = the cell the player was in (old), picked = the cell committed (new),
$$ and px/py/pz = the player world origin (raw IEEE-754 hex; decode offline with
$$ tools/cdb/decode_retail_hex.py, then write decimals into the golden fixture).
$$
$$ Target: CPhysicsObj::change_cell @ 0x00513390 (pc:281192) — commit-on-diff.
$$ It fires ONLY on an accepted cell transition, so the doorway crossing yields a
$$ short, clean sequence (e.g. 0031 -> 0170 -> 0171), not a per-tick flood.
$$ Captures retail's ACCEPTED membership transitions at a building doorway so we
$$ can pin acdream's CellTransit.FindCellList against it (P0 Task 6, P1 gate).
$$
$$ Target: CPhysicsObj::change_cell @ 0x00513390 (pc:281192) — fires ONLY on an
$$ accepted cell transition (the doorway crossings) -> short clean sequence.
$$ thiscall: this (CPhysicsObj*) = @ecx ; arg new_cell (CObjCell*) = poi(@esp+4)
$$
$$ OFFSETS BELOW ARE PLACEHOLDERS — VERIFY LIVE (see README). At the first break:
$$ dt acclient!CPhysicsObj @ecx $$ find m_position (Frame/Position) + cell
$$ dt acclient!CObjCell poi(@esp+4) $$ find cell_id offset
$$ dt acclient!Position <m_position> $$ find origin (x,y,z) float offsets
$$ then edit CELLID_OFF / CELLPTR_OFF / POS_OFF and re-run.
$$ Offsets VERIFIED live via tools/cdb/discover-types.cdb against the matched PDB:
$$ CPhysicsObj.m_position @ +0x48 ; .cell @ +0x90
$$ Position.objcell_id @ +0x04 ; .frame @ +0x08 ; Frame.m_fOrigin @ +0x34
$$ CObjCell.pos @ +0x54 -> a cell's id = cell + 0x54 + 0x04 = cell + 0x58
$$ player origin x/y/z = @ecx + 0x48 + 0x08 + 0x34 = @ecx + 0x84 (x), +0x88, +0x8c
$$
$$ seed = this->cell->pos.objcell_id (the cell BEFORE this change; null-guarded)
$$ picked = new_cell->pos.objcell_id (the cell committed)
$$ px/py/pz = player world origin as raw IEEE-754 hex (decode: decode_retail_hex.py)
$$
$$ Emits the golden format read by RetailTrace.ParseFindCellList:
$$ [fcl] seed=0x<oldcell> px=0x<hex> py=0x<hex> pz=0x<hex> picked=0x<newcell>
$$ ============================================================================
.logopen C:\Users\erikn\source\repos\acdream\find-cell-list-capture.log
.logopen C:\Users\erikn\source\repos\acdream\.claude\worktrees\thirsty-goldberg-51bb9b\find-cell-list-capture.log
.sympath C:\Users\erikn\source\repos\acdream\refs
.symopt+ 0x40
.reload /f acclient.exe
$$ ---- EDIT THESE after the dt dumps (hex byte offsets) ----------------------
r $t4 = 0x18 $$ CELLID_OFF : CObjCell.cell_id (acclient.h:30938 — verify)
r $t5 = 0x08 $$ CELLPTR_OFF : CPhysicsObj.cell (current cell ptr — verify)
r $t6 = 0x1C $$ POS_OFF : CPhysicsObj.m_position.origin.x (verify; y=+4, z=+8)
$$ ---------------------------------------------------------------------------
r $t0 = 0
bp acclient!CPhysicsObj::change_cell "r $t0 = @$t0 + 1; r $t1 = poi(@ecx+@$t5); r $t2 = poi(@esp+4); .printf /D \"[fcl] seed=0x%08x px=0x%08x py=0x%08x pz=0x%08x picked=0x%08x\\n\", poi(@$t1+@$t4), poi(@ecx+@$t6), poi(@ecx+@$t6+4), poi(@ecx+@$t6+8), poi(@$t2+@$t4); .if (@$t0 >= 400) { .printf /D \"=== DETACH after %d cell changes ===\\n\", @$t0; qd } .else { gc }"
bp acclient!CPhysicsObj::change_cell "r $t0 = @$t0 + 1; r $t1 = 0; .if (poi(@ecx+0x90) != 0) { r $t1 = poi(poi(@ecx+0x90)+0x58) }; .printf /D \"[fcl] seed=0x%08x px=0x%08x py=0x%08x pz=0x%08x picked=0x%08x\\n\", @$t1, poi(@ecx+0x84), poi(@ecx+0x88), poi(@ecx+0x8c), poi(poi(@esp+4)+0x58); .if (@$t0 >= 16) { .printf /D \"=== DETACH after %d cell changes ===\\n\", @$t0; qd } .else { gc }"
.printf \"find-cell-list capture armed (change_cell). Walk SLOWLY in/out of the cottage doorway now.\\n\"
.printf \"find-cell-list capture armed (change_cell). Walk SLOWLY in/out of the doorway now.\\n\"
g