The template object is stage\Null_Test.tbl: its key hashes as
name_hash("stage\" + "Null_Test.tbl"), the file stage-definition-table names as
EnumerateNullFrame. Ten records - 4 Frame_Test_Asteroid_01..04, 3
Placement_00..02, 2 RouteTest_00..01, Enumeration - and the nine carrying a
FrameCount are exactly the "9/9 for Null_Test.tbl" stage-mission-tables already
counted. The corpus knew the file and the count, not the record names. A second
object (the same five plus Enumeration, without the asteroid frames) matched
none of ten candidate names across sixteen prefixes.
Enumeration is a record that indexes its own object. Disc-wide: 7750 IDXD
objects, 360 carry one, and in 360/360 its field names equal exactly that
object's other record names - zero subsets, zero strays. Field/record counts
run from 2 past 25 ((3,3)x36, (9,9)x24, (13,13)x24, (2,2)x24, (25,25)x18,
(16,16)x12), every pair on the diagonal.
Enumeration vs Enumerate is one letter and opposite scope: Enumerate is
archive-naming's route-2 seed, a single-record object whose fields name OTHER
objects; Enumeration names the records of its own object. Written up in
idxd-container, which had left "an object's kind is known only from the caller
that loads it" open.
Sharper version of the previous correction: I credited the stage\ prefix to
archive_naming.py, but stage-mission-tables states it in prose ("The prefix is
stage\ - name_hash is case-insensitive") and its stagetbl.py examples pass
'stage\AIParams_S02.tbl'. Noted in asteroid-fields.md.
All fifteen artefacts byte-identical.
Grepping FrameCount first would have saved the previous iteration an overclaim.
Withdrawn: the 8-value layout was not a discovery. stage-mission-tables already
documents Route_* records as (time, quat.x,y,z,w, pos.x,y,z) with
len(fields) == 8*FrameCount + 1 holding 1449 of 1449, and unit-group-table
already documents 1 + 8*FrameCount for formation slot lists. I re-derived the
shape from the asteroid tables and called slot 0 an "index" - it is the
corpus's time slot. Corrected in asteroid-fields.md. What the asteroid pass did
add is the norm test.
The census the corpus was missing: both prior statements were measured on one
table family each. Sweeping every IDXD record on the disc carrying a
FrameCount - 10986 records, 10974 with anon == 8 * FrameCount, and the entire
residual is 12 records: Formation_Fleet_01 (ratio 136) and Formation_Fleet_02
(ratio 4), six each, one per language pack. The two exceptions the doc already
names are the only two on the disc.
The quaternion is now measured, not asserted: over 78762 frames in five
families, |q| is within 1e-4 of 1.0 on 78762 / 78762.
Slot 0 is time only where something moves. It equals the running ordinal
0..N-1 in every formation (2196/2196), asteroid (384/384), placement (36/36)
and test-route (24/24) record, and in only 6228 of 8334 real routes - the one
family that stores true timestamps there.
Two record families new to the corpus: Placement_00..02 and RouteTest_00..01,
sharing a six-record template object whose sixth record is named Enumeration,
two such objects per language pack.
All fifteen artefacts byte-identical.
Measured over every Frame_*Asteroid* record on the disc - 384 records, 37518
items (6253 per language pack x 6; the remaining 380 per pack belong to the
seven record-less Alpha frames, the same 57-vs-64 split as before).
slot 0 equals the running index 0..N-1 37518 / 37518, max 587, and the
largest FrameCount is 588, so the last index is N-1
slots 1-4 a unit quaternion 37518 / 37518 within 1e-4 of 1.0
(min 0.999999, max 1.000001)
slot 4 sign of the real part min +0.001, never negative -
canonical w-last, so the order is (x, y, z, w)
slots 5-7 position in metres -163858..+79572, -114308..+76422,
-105224..+110263 - inside the +/-250 km half-extent of
mapmesh_box_500km
len(anonymous fields) == 8 * FrameCount on 384 of 384, zero mismatches.
The unit-norm test is the control: an arbitrary 4-tuple has no reason to sit on
the unit sphere and every one of the 37518 does. Two further cross-checks fell
out - the maximum index is exactly max(FrameCount) - 1, and every position lies
inside the 500 km box the corpus already knows (world unit = 1 metre).
There is no scale slot: an asteroid's size comes from its group's
AsteroidModelName, which is why a group is one model plus one placement list.
Not settled: whether the quaternion is object->world or world->object and its
handedness - a norm test cannot separate those; and why S28_p1 has an asteroid
volume with no definition.
All fifteen artefacts byte-identical.
EnumAsteroid is the frame record's FrameCount - 57/57, zero mismatches. Each
AsteroidFrameName is itself an IDXD record name; those records carry one named
field, FrameCount, plus a run of anonymous ones, and the anonymous fields
number exactly 8 x FrameCount on all 384 occurrences (ratio histogram
{8.0: 384}). The frame record is the placement table, 8 values per asteroid,
and EnumAsteroid counts the rocks. The frame-name -> EnumAsteroid map is
single-valued for all 64 names.
mission-wave-arrivals already met these records - they were the outliers that
broke its route-speed measurement, filtered out by name. regn-map-grid already
guessed the link and said so honestly ("a reading, not a measurement; nothing
here counts objects"). Neither says the count is exact.
The abandoned table lost its placement data too: exactly 7 of 64 frame names
have no record, and they are exactly the seven groups of the unreferenced
tenth object (Frame_Alpha_S01_Asteroid_{01,02,04}, Frame_Alpha_S01_Haze_
{01,02,03}, Frame_TAlpha_S01_Asteroid_03). 57 + 7 = 64, zero partials.
Withdrawing the previous commit's red flag: the hash join works and my call
was wrong. AsteroidDefinition values resolve to their objects' pak entry keys
as name_hash("stage\" + name), 9 of 9, each landing on the object the
frame-prefix join independently predicted. I had hashed the bare file name;
archive_naming.py hashes prefix + name over a path-prefix list. Two
independent joins, 9/9 agreement, both leaving the same tenth object
unreferenced.
Not settled: what the 8 values per asteroid are; why S28_p1 has a volume and
no definition.
All fifteen artefacts byte-identical.
New doc docs/re/structures/asteroid-fields.md, indexed.
Half the chain was already in the corpus: stage-definition-table and
stage-mission-tables record the per-phase AsteroidDefinition naming a .tbl,
and unit-datasheet-static partitions Generic and finds 10 per pack whose only
field is {EnumAsteroidGroup}, "an asteroid-group file". Neither says what is
inside them.
The table: 10 objects per pack x 6 packs = 60, 384 AsteroidGroup_* records,
4 or 7 groups per object. Every record carries exactly three fields, all 384,
no partials - AsteroidModelName (28 distinct; mob_n050..n056 x24 each,
mob_n040..n043 x18), AsteroidFrameName (64 distinct, Frame_S<NN>[_pN]_
Asteroid_NN, the same names regn-map-grid reports the Route tables showing),
and EnumAsteroid (37 distinct, 1..588, 6633 per pack summed).
Enum<Thing> is a COUNT; Enumerate<Thing> names a TABLE. EnumAsteroidGroup
equals its object's group count in 54 of 60 and EnumAsteroid is a plain
integer - the opposite of the Enumerate* join rule. The -erate is the
difference. Count-style fields still are not safe: the 6 failures are ONE
object repeated per language pack, declaring 4 while holding 7.
The tenth object is unreferenced and it is the one that miscounts. Joining by
frame prefix, nine objects match the nine AsteroidDefinition values one to
one; the tenth carries Frame_Alpha_S01_Asteroid, Frame_Alpha_S01_Haze and
Frame_TAlpha_S01_Asteroid and is named by nothing.
S28 has an asteroid VOLUME but no asteroid DEFINITION: mcol-collision lists
nine _AsteroidVolume_wp meshes (…, S28_p1); the nine AsteroidDefinition values
are those eight plus test_s8p1. Eight shared, one different each way.
Not settled: what EnumAsteroid counts of; why S28_p1 has a volume and no
definition. The name->object join did not reproduce by hash under name_hash,
mod 0x00FFF9D7, or a 24-bit mask - the join used is by frame prefix.
All fifteen artefacts byte-identical.
