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Syplheed-Reborn/docs/re/structures/result-screens.md
Sylpheed RE agent 80406ce3e4 re: the RTTI route is dead - BASE_INFO enumerates 95 screens instead
Item (a): can the vtable scan name the corpus's anonymous classes?

The route I proposed last turn - "the RTTI behind those two anon classes" - does
not exist. Of all 1150 catalogued vtables, 1150 carry an ANON_ class name, 0 have
rtti_present set, and 0 have a non-empty base_classes_json. Not one named class,
not one RTTI flag, not one base-class edge in the whole table. Withdrawn as
unrunnable; the ANON_Class_XXXXXXXX labels are synthesised, not recovered.

The sibling methods cannot name a class either: slots 0, 2, 3 and 4 of both EX_
classes reference zero strings. Every naming datum sits in slot 1, the method the
corpus already had.

Re-verified at the true addresses (0x820A9760 and 0x820A9350) that sub_822814D8
and sub_8227A3A0 are each slot 1 uniquely, and sub_82286BC8 is in no vtable.

What the shape DID give: both classes are 5-slot with an exactly-88-byte slot 0.
83 vtables have 5 slots, 16 also have the 88-byte slot 0, 13 of those have a
catalogued slot 1, and 10 build a key list. Ranked by key count the two known
screens sit at the top and the rest name themselves - a medals screen
(MEDALS/ACHIEVED_MEDALS/NEW_MEDAL), an evaluation list (EVALUATION_LIST plus
eval_%02d_eval / eval_%02d_points), the gamma screen (GAMMA_RGB/GAMMA_WB),
POINT_RANKING, CLEAR_TIME_RANKING, and three bare ones.

POINT_RANKING and CLEAR_TIME_RANKING being two separate screens is a direct lead
for the open item "which challenge stage is which leaderboard mode": the
leaderboard is ranked two ways and each way has its own class.

But the obvious follow-on claim - that BASE_INFO marks this family - is false,
and the control says so. BASE_INFO is a single string at 0x820A20EC referenced by
95 functions: 10 inside the family, 85 outside, including sub_82286BC8 (the save
screen, in no vtable at all) and sub_822AE628 (the hangar loader). So the
direction inverts: BASE_INFO is the universal first key of every screen key list,
a 95-function population, while the 5-slot/88-byte shape is only a weak filter
that catches 10 of them plus 6 non-screens. Enumerate screens by BASE_INFO, not
by vtable shape.

All seventeen artefacts byte-identical.
2026-08-28 11:41:52 +00:00

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14 KiB
Markdown

# ✅ The debriefing and pilot-record screens — `STAGE_RESULT`, `OVERVIEW`, `EX_OVERVIEW`
- **Where:** `tables.pak` (the menu config pak), records `STAGE_RESULT`, `OVERVIEW`,
`EX_OVERVIEW`; key lists compiled into the executable at `sub_822814D8` and
`sub_8227A3A0` (found by the base-solver, [[player-tuning-tables]]).
- **Related:** [[mission-scoring]] owns the *rules* (`Score_*` in the stage
settings); this is the *readout*. [[savegame-format]] documents the same
compiled-key-list shape for the LOAD/SAVE screen.
## The shape was already known — for other screens
[[savegame-format]] establishes it: *"the LOAD/SAVE screen's config key list is
compiled into the executable, as a pointer array of key strings — the same shape
as the Arsenal's (whose keys sit a few hundred bytes earlier and match the pak
record exactly)"*, run starting `0x820A0074`. **`sub_82286BC8`'s 18-name block is
exactly that list** — 17 of its 18 are a `tables.pak` field or record name, so it
is the documented save-screen list and nothing new. Its lone residual is
**`PLAYER_AMMO_LESS_10`**, which is not a `tables.pak` name at all.
## ✅ Two more screens, and the key lists match their records exactly
| block | names | all present in `tables.pak`? |
|---|---:|---|
| `sub_822814D8` | 24 | **24 / 24** |
| `sub_8227A3A0` | 21 | **21 / 21** |
And the arithmetic closes against the records themselves:
* **`sub_822814D8` = the debriefing screen.** 24 names = 2 screen ids
(`STAGE_RESULT`, `EX_STAGE_RESULT`) + **21 `stage_*` fields** + one sound cue
(`SE_BOSS_CORE_CHARGE`). The `tables.pak` record `STAGE_RESULT` has **exactly
21 fields** (2 objects, both 21).
* **`sub_8227A3A0` = the pilot record / career screen.** 21 names = 5 screen ids
(`LAST_RESULT`, `EX_BASE`, `EX_MAIN`, `EX_OVERVIEW`, `OVERVIEW`) + **7
`ex_overview_*`** + **9 `overview_*`**. The records `EX_OVERVIEW` and
`OVERVIEW` have **exactly 7 and 9 fields** (2 objects each).
`2+21+1 = 24` and `5+7+9 = 21`, with 21/7/9 measured independently off the pak.
### The debriefing readout, in full
```
stage_num_shoot_down_aircrafts stage_points_shoot_down_aircrafts
stage_num_shoot_down_ships stage_points_shoot_down_ships
stage_points_shoot_down_others
stage_weight_shoot_down
stage_num_main_objectives stage_points_main_objectives
stage_num_sub_objectives stage_points_sub_objectives
stage_clear_time stage_points_clear_time
stage_shoot_down_ratio stage_points_shoot_down_ratio
stage_damages_friendly_ships stage_points_damages_friendly_ships
stage_damages_wingman stage_points_damages_wingman
stage_points_friendly_fire
stage_total_points stage_rank
```
🔑 **Nine `num`/`points` pairs plus three points-only lines** — the screen shows
a raw count *and* its score contribution for kills by class, objectives, time,
ratio and both damage categories; `friendly_fire`, `shoot_down_others` and
`weight` have no counter column. That is the same partition
[[mission-scoring]] measures on the settings side.
### The career readout
`overview_points`, `_total_play_time`, `_clear_stages`, `_retry_times`,
`_shoot_down_aircrafts`, `_shoot_down_ships`, `_shoot_down_weight` — seven, and
`OVERVIEW` adds **`overview_rank`** and **`overview_medals`**. The `EX_` twin has
the seven and neither of the two, which is what makes `EX_` the reduced variant
rather than a different screen.
🟡 Not settled: what `EX_` means (a second profile? the online/leaderboard
variant?) — **but see
[stage-numbering-and-player-craft](stage-numbering-and-player-craft.md):
`_EXn` on an asset name is measured to mean "the n-th challenge mission", which
makes "`EX_` = the challenge-mission debriefing" a consistent reading of why
this twin drops `overview_rank` and `overview_medals`. Not adopted — the
selection has not been shown** — `EX_BASE`, `EX_MAIN`, `EX_STAGE_RESULT` and `EX_FONT` are keys with
**no record of that name**, so the prefix is a screen-id convention, not a table.
And `PLAYER_AMMO_LESS_10` is unexplained.
**Reproduce:** parse `tables.pak` with `tools/re-capture/unitgroup.py` and count
the fields of the three records; take the key lists from the `sub_822814D8` /
`sub_8227A3A0` / `sub_82286BC8` sections of [`../data/name-block-bases.txt`](../data/name-block-bases.txt).
## ✅ The `EX_` selection, shown at last — a mode word tested against 3
The section above left this open: "**the selection has not been shown**". It is
shown now. Both screens that reference `EX_` names carry the *same five-instruction
idiom* immediately before the choice — `sub_822814D8` at `0x822815b4` and
`sub_8227A3A0` at `0x8227a408`:
```asm
lwz r11, 4(rX) ; the owning object
lwz r11, 184(r11) ; a mode word at +184
addi r11, r11, -3
cntlzw r11, r11
rlwinm r11, r11, 27, 31, 31 ; r11 = 1 iff [+184] == 3
cmpli cr6, 0, r11, 0x0
bc 12, 4*cr6+eq, <plain> ; not 3 -> STAGE_RESULT / OVERVIEW
; else -> EX_STAGE_RESULT / EX_OVERVIEW
```
`cntlzw` of zero is 32; rotating left 27 lifts bit 5 into bit 31, so the sequence
is a branchless **"equals 3"** test. The equal-to-zero branch takes the *plain*
name, so **`EX_` is chosen exactly when the word is 3**.
A small partition over the three key-list loaders the corpus already names:
| | loads `+184` | does not |
|---|---|---|
| **references `EX_` names** | **2** | 0 |
| **does not** | 0 | **1** |
`sub_822814D8` and `sub_8227A3A0` both load it; `sub_82286BC8`, which references
no `EX_` name, has no `+184` access at all. Both off-diagonal cells are empty.
### 🔑 3 is the game's own `EXTRA` — and that is *not* `CHALLENGE`
[[challenge-mission-gate]] already established the vocabulary for this constant
at a three-way switch: `== 3` → **`EXTRA`**, `== 5 or 6` → **`CHALLENGE`**,
otherwise `FILE`. So the prefix reads literally: **`EX_` is the `EXTRA` variant**.
⚠️ **This refines the tentative reading above rather than confirming it.** That
section proposed "`EX_` = the challenge-mission debriefing" by analogy with
`_EXn` on asset names. The measured constant is `EXTRA`, which in the game's own
three-way vocabulary is a *different* kind from `CHALLENGE` (5/6). `EX_` tracks
`EXTRA` specifically.
⚠️ **The boundary of what was measured:** the `EXTRA = 3` constant is established
at **`+144`** of the stage-loader class, while the word tested here is at
**`+184`** of `[object + 4]`. Same constant, same `EX`/`EXTRA` naming, two
different offsets in what may be two different objects — **that the two fields
are the same field is not shown**, only that both compare a mode word against 3.
## 🔴 Who writes `+184` — blocked, by two independent instrument failures
The next question after the selector is what *supplies* the mode. Two routes
were tried and both are measured to have no power here.
**The offset route has no power.** `stw …, 184(rN)` occurs **301 times** in the
image, `lwz` from `+184` **351 times**, and **115 functions touch both `+144`
and `+184`**. `+184` is an ordinary small offset shared by many unrelated
classes — the same shape that the corpus already recorded as failing three
times. Nothing here narrows to a writer.
**❌ The `xrefs` `ind_call` edges are a cross product — do not use them as
callers.** Asking for the callers of the two screens returns **633 sources for
each, and the two lists are identical**, which cannot be right. Measuring the
relation itself:
| | |
|---|---|
| `ind_call` rows | **1 827 297** |
| distinct targets | 1 710 |
| distinct sources | 6 992 |
| **targets with *exactly* 633 sources** | **236** |
236 different functions sharing the identical source count is the signature of
an unresolved-indirect-call cross product, not of a call graph. ⚠️ **Any reading
that treats an `ind_call` edge as "X calls Y" is void**, here and elsewhere in
the corpus.
⚠️ The control shows the *other* kinds are fine: `sub_82286BC8` has exactly
**one** caller, kind `call`. And both `EX_` screens have **zero** non-`ind_call`
edges — they are reached only through function pointers, which is why the direct
graph is empty for them.
### ✅ What did come out: both `EX_` screens are slot 1 of their own class
Scanning the 1 150 catalogued vtables' entries in the flat `.pe`:
| function | vtable | slot |
|---|---|---|
| `sub_822814D8` (debriefing) | `ANON_Class_271D5F25` | **1** |
| `sub_8227A3A0` (career) | `ANON_Class_CAA8AD62` | **1** |
| `sub_82286BC8` (save) | *in no catalogued vtable* | — |
So each `EX_`-selecting screen is a class whose **slot-1 virtual** is its
key-list builder, and the third — which selects nothing — is not a vtable method
at all. That is consistent with the 2 / 0 / 0 / 1 partition above arriving from a
structural difference rather than a coincidence.
🔴 **Still not settled: what writes `+184`.** Both the offset sweep and the call
graph are exhausted for it. A route with actual power would be the RTTI class
behind `ANON_Class_271D5F25` / `_CAA8AD62`, or a runtime watch on the field —
not another static offset search.
### ✅ How far the `ind_call` damage reaches — bounded, and the corpus is clean
The refutation above is corpus-wide in principle, so the next question is which
existing claims it voids. Answer: **none of the ones the corpus makes.**
**Every caller-count claim in the corpus checks out against `call` edges, with
zero `ind_call` contamination:**
| doc | claim | `call` | `ind_call` |
|---|---|---|---|
| `title-crash-stl-tree` | `sub_82457780` "one caller" | **1** | 0 |
| `isl-trigger-queue` | `sub_8226EAB8` "16 callers" | **16** | 0 |
| `isl-coroutine-spawner` | `sub_822737C8` "seven callers" | **7** | 0 |
| `challenge-mission-gate` | `0x82175110` "22 callers" | **22** | 0 |
4 of 4 exact, and none of the four has a single `ind_call` edge.
**And there is a structural reason, not luck.** Partitioning the two target
populations:
| | count |
|---|---|
| targets with `ind_call` edges | 1 710 |
| targets with `call` edges | 12 170 |
| **both** | 103 |
| `ind_call` only | 1 607 |
| `call` only | 12 067 |
🔑 **All 1 710 `ind_call` targets are vtable entries — 1 710 of 1 710, zero
partials.** (Against a control: only 273 of the 12 170 `call` targets are.) So
`ind_call` fires *only* on virtual methods, and **1 607 of them have no direct
caller at all** — which is exactly why the two `EX_` screens came back empty on
`call` and flooded on `ind_call`.
⚠️ **The residual risk, named precisely:** the **103** targets carrying *both*
kinds. There a caller count taken without a `kind` filter would be inflated by
~633. Everywhere else the two populations are disjoint, so a `call`-based count
is safe and an `ind_call`-based one is meaningless.
**Rule for future work:** always filter `kind='call'`; and when a function has no
`call` edges, that is a *fact about it* — it is a virtual method — not a gap to
be filled from `ind_call`.
### ❌ The RTTI route is dead — and ✅ what the vtable scan gave instead
Last iteration proposed "the RTTI behind those two anonymous classes" as the next
route with power. **Measured, it does not exist.**
| over all 1 150 catalogued vtables | |
|---|---|
| `class_name` starting `ANON_` | **1 150 of 1 150** |
| `rtti_present` true | **0** |
| non-empty `base_classes_json` | **0** |
There is not one named class, not one RTTI flag, and not one base-class edge in
the whole table. ⚠️ **Withdrawn: my own "next route" from last turn was
unrunnable.** The `ANON_Class_XXXXXXXX` labels are synthesised, not recovered
names.
✅ **Re-verified, though**: reading the two vtables at their true addresses
(`0x820A9760`, `0x820A9350`) confirms `sub_822814D8` and `sub_8227A3A0` are each
**slot 1, uniquely**, and `sub_82286BC8` is in no vtable.
❌ **The sibling methods cannot name the class either.** Slots 0, 2, 3 and 4 of
both classes reference **zero** strings. Every naming datum in both classes sits
in slot 1 — the method the corpus already had.
#### ✅ But the shape found eight more screens
Both classes are 5-slot with an exactly-88-byte slot 0. Filtering the whole
table on that shape: 83 vtables have 5 slots, **16** also have the 88-byte slot
0, 13 of those have a catalogued slot 1, and **10 of the 13 build a key list**.
Ranked by key count, the two known screens are at the top and the rest name
themselves:
| class | slot 1 | its key vocabulary |
|---|---|---|
| `ANON_Class_271D5F25` | `sub_822814D8` | `EX_STAGE_RESULT` / `STAGE_RESULT` — **the debriefing** |
| `ANON_Class_CAA8AD62` | `sub_8227A3A0` | `EX_OVERVIEW` / `OVERVIEW` / `LAST_RESULT` — **the career screen** |
| `ANON_Class_5FFD2641` | `sub_82278960` | `MEDALS`, `ACHIEVED_MEDALS`, `NEW_MEDAL`, `DETAIL_NEW` |
| `ANON_Class_8501FBF7` | `sub_82275F80` | `EVALUATION_LIST`, `eval_%02d_eval`, `eval_%02d_points` |
| `ANON_Class_B09C08C7` | `sub_822B4838` | `GAMMA_RGB`, `GAMMA_WB` |
| `ANON_Class_9795AB66` | `sub_8227F6E0` | **`POINT_RANKING`** |
| `ANON_Class_A7CB2C37` | `sub_82282C28` | **`CLEAR_TIME_RANKING`** |
| `ANON_Class_7EE7DC6F` / `431702E3` / `22F09B71` | `sub_822B6F60` / `sub_822B84A8` / `sub_822B9B78` | `BASE_INFO` only |
🔑 **`POINT_RANKING` and `CLEAR_TIME_RANKING` are two separate screens** — a
direct lead for the open item "which challenge stage is which leaderboard mode":
the leaderboard is ranked two ways, and each way has its own class.
⚠️ Note `eval_%02d_eval` — a **printf numeric wildcard**, the code-side analogue
of the datasheet schema's `???` suffix wildcard.
#### ❌ …but `BASE_INFO` is NOT this family's signature
The obvious next claim — "`BASE_INFO` marks the family" — is false, and the
control says so plainly. `BASE_INFO` is a single string (`0x820A20EC`) and
**95 functions reference it: 10 inside the family, 85 outside** (`95 = 10 + 85`).
Among the outsiders are `sub_82286BC8` (the save screen, in no vtable at all) and
`sub_822AE628` (the hangar loader).
So the direction inverts: **`BASE_INFO` is the universal first key of every
screen key list — a 95-function population** — while the 5-slot/88-byte shape is
only a **weak** filter that happens to catch 10 of them (and 6 non-screens). Use
`BASE_INFO` to enumerate screens; do not use the vtable shape.