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port: the ring spins, the plate needs no constant, and rest.t was never the settle

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Two milestones' known-wrong bits, both now answered by the RE agent, both taken.

P5 -- the focus ring. It was drawn at 0 with a comment saying so. The period is
now measured (continuous spin, eight evenly spaced autocorrelation peaks over
nine revolutions, no angle estimated anywhere) and it needs NO authored
constant: the period is the element's own declared t=120, and what the
measurement adds is only that the turn repeats rather than stopping -- which
"groups hold" could not decide, because 0 and 360 are the same pose.

`spin_period_units` is structural and narrow on purpose: two keyframes,
differing in nothing but rotation_deg, by a full 360, first timed and second
untimed. 16 of 212 elements in this export match and all 16 are focus rings,
zero false positives. That check is the point -- the measurement was taken on
ONE button of ONE screen, and a rule that caught anything else would be
extrapolating it to elements nobody watched.

Verified on the port's own render with the RE agent's own control: bit-identical
one period apart across the whole frame, 3.6/255 inside the ring's box at
quarter-period steps, and box luminance conserved to 0.027 % over eight phases
-- which is the observable they used to separate rotation from a pulse. Not
claimed: direction (no signed angle was ever measured) and phase across a focus
change (their run held focus throughout).

P3 -- the plate. Last iteration I refuted their authoring instruction and
shipped it anyway rather than pick between two of their numbers. The refutation
held and the answer came back better than either option I offered: AUTHOR
NOTHING. Both builds run on one clock started together and the plate arrives at
its own declared t=238. The 2.13 s constant is deleted.

The premise that failed was mine: rest.t IS NOT WHEN A SCREEN SETTLES. It is the
last hold keyframe before the exit. ptlogo1 stops MOVING at t=42 and then creeps
5 px and 31 alpha steps to t=251. Reading rest.t put build 4's arrival at 4.350 s
instead of 1.967 s, and the "2.51 s, which is not a landmark of anything" I sent
them is that error wearing a decimal point. 238 - 118 = 120 units = 2.000 s
against a measured 2.135 s at 28.1 fps presentation. Checked against my own
export before touching anything.

`ScreenView.settle_time()` still uses rest.t, and so the boot sequencer paces
every screen off the wrong landmark. NOT changed here: "visible arrival" is a
heuristic and getting it wrong re-paces everything. Filed, and asked for a timed
boot instead now that their oracle is live.

REFUTATION: two of their pages measure the same declared 120 units of wall clock
during a static hold and disagree by 2 % -- plate 2.135 s (28.10 fps implied),
ring 2.177 s (27.56 fps). That is seven times the plate page's own 6 ms
run-to-run agreement, and it lands on the argument that page uses to justify
itself: "the build-in is where frames are dropped; the static hold is not". Also
the ring page's band, 27.6-28.8 fps, does not contain its own measurement -- the
mean needs 27.56 and four of seven spacings are outside. Filed, not worked
around: my port uses the declared 120 units either way.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WM5XL4HfrHuxz8RiMWdCMC
This commit is contained in:
Sylpheed port agent
2026-08-29 12:50:35 +00:00
parent 9b30fb5933
commit c225852fb3
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13
authored/flow.json
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@@ -31,12 +31,13 @@
"screen": "title",
"overlay": {
"screen": "press_start",
"after_settle_seconds": 2.13,
"why": "MEASURED, 2026-08-29, docs/re/title-plate-delay-measured.md on branch auto/no-disc-and-menu-captures at fb536df (NOT yet on main when this was written). The boot title shows build 4 ALONE, and the `PRESS (A) BUTTON` plate -- build 2 -- is composited over it 2.13 s later. Two independent boots of the real game agree to 6 ms. This is the ONE case in the port where two builds are drawn at once.",
"measured_from_why": "The 2.13 s is timed from the frame build 4's own build-in animation FINISHES, not from the frame the title art first appears. That distinction is the finding, not a detail: measured the other way the two runs differ by 0.48 s, because the build-in itself ran 1.64 s and 2.13 s and the emulator's frame pacing during an animation is not the game's clock. A number taken from the wrong instant here looks exactly like a measurement.",
"not_a_fade_in_why": "The alternative -- that the plate was there all along, pulsing too dim to see -- was tested and refuted on two observables. The plate's declared alpha never exceeds 0x50, so a thresholded glyph counter could in principle miss a dim phase; it does not. The count sits at EXACTLY 154 with zero variation for 1.99 s / 2.13 s and then swings 714-1520, and the surface mean is flat to +/-0.03 across the plateau. A pulsing overlay moves the frame mean.",
"scope_why": "Attached to the BOOT STEP, not to the `title` screen, and that is deliberate. What was measured is the boot title. Whether the title shows the plate when it is REACHED AGAIN -- by (B) from the main menu, or after the attract movie -- is not measured, and putting the overlay on the screen would quietly claim it is. See docs/port/BLOCKED.md.",
"no_pulse_why": "The port draws the plate arriving and then HOLDING VISIBLE. It does not pulse it. The plate's own group encodes exactly one cycle -- alpha 0x00 at t=214, 0xff at t=238-244, 0x00 on the final untimed keyframe -- and the port holds at the settle (t=238, alpha 0xff) as it does on every other screen. The running game was measured pulsing continuously at peak intervals averaging 2.24 s, and NO reading of this group produces 2.24 s: looping the whole group gives 268 units = 4.47 s, looping from the first keyframe gives 54 units = 0.90 s. So repeating the group here would be inventing a period, and the port does not. Filed in BLOCKED.md."
"clock": "shared",
"why": "MEASURED, 2026-08-29, docs/re/title-plate-delay-measured.md on branch auto/no-disc-and-menu-captures at 5b0a6e6 (NOT on main when this was written). The boot title shows build 4 ALONE and the `PRESS (A) BUTTON` plate -- build 2 -- arrives later. This is the ONE case in the port where two builds are drawn at once.",
"no_constant_why": "THERE IS NO AUTHORED DELAY HERE, AND THERE WAS ONE FOR ONE ITERATION. The first version of this block carried `after_settle_seconds: 2.13`, taken from the RE agent's instruction. The port refuted that instruction with arithmetic off the disc -- build 2 has a group of its own, and starting it at settle put the plate 3.97 s late -- and the corrected answer needs no constant at all: BOTH BUILDS RUN ON ONE CLOCK, STARTED TOGETHER, and the plate arrives at its own declared t=238. `clock: \"shared\"` is that, spelled out rather than implied by the absence of a delay field.",
"arithmetic_why": "Why one clock reproduces the measurement, checked against this export rather than taken on trust: build 4's visible build-in ends at t=118, where `pteff01`, `pteff02` and `ptlogoall_eff` finish together; `ptbtn00` reaches alpha 255 at t=238; the difference is 120 units = 2.000 s at 60 units/s. The oracle measured 2.138 s and 2.132 s. The gap is presentation rate: 120 units in 2.135 s is 56.2 units/s, i.e. the emulator presenting at 28.1 fps against a nominal 30, and the corpus had independently measured the idle title at 28.5 fps before these runs.",
"the_premise_that_failed_why": "The port's own, and it is worth keeping because it will bite again: `rest.t` IS NOT WHEN A SCREEN SETTLES. It is the last hold keyframe before the exit. `ptlogo1` has rest.t=251 and stops MOVING at t=42, then creeps 5 px and 31 alpha steps over the next 209 units. Reading rest.t as the settle put build 4's arrival at 4.35 s instead of 1.97 s, and every reconciliation computed from it came out wrong by exactly that error. `ScreenView.settle_time()` still uses rest.t -- see docs/port/BLOCKED.md.",
"scope_why": "Attached to the BOOT STEP, not to the `title` screen, and that is deliberate. What was measured is the boot title. Whether the title shows the plate when it is REACHED AGAIN -- by (B) from the main menu, or after the attract movie -- is not measured, and putting the overlay on the screen would quietly claim it is.",
"no_pulse_why": "The port draws the plate arriving and then holding. It does not pulse it. The RE agent identifies the pulse as the plate's FOCUS RECORD `ptbtn00f` -- a glow ramping 0x00 to 0x50 and back, t=6..105 -- not as a loop of `ptbtn00`'s own group, which was the port's earlier reading and was wrong. Looping that record is a candidate the port has NOT taken: its group is 105 timed units plus an AUTHORED 24-unit exit ramp, and hitting the measured 2.24 s mean requires composing that authored constant with a loop assumption, which is tuning rather than measuring. Filed in BLOCKED.md."
},
"why": "HANDOFF Q2/Q6: the boot reaches the title after the intro movie. This is the LAST step, and a last step is where the sequence stops rather than fading out -- a boot that ends by fading to black looks like a boot that crashed. P5 gave the title somewhere to go, but that is a HANDOVER and not another boot step: `--boot` still stops here, and `--boot --play` hands the same held title to the menu flow, where (A) opens TITLE_MENU. Kept as a stop rather than folded into `screens` because what the boot does is authored from a measured sequence, and what (A) does is a separate measurement."
}

7
docs/port/BLOCKED.md
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@@ -83,11 +83,12 @@ git log -1 --format=%h -- docs/port/HANDOFF.md # newer than 9ca1eb5? re-reconc
| P5 — Ⓑ on the main menu | **is Ⓑ what returns to the title, or the idle timer?** | Q5 | 🟡 stated in HANDOFF, no capture behind it. The title self-returns after ~8–10 s idle, so one unrecorded observation cannot separate them. `authored/flow.json` implements it and marks it *authored — likely but UNPROVEN*. **Not blocking** — P5 shipped with it — but it is the only navigation rule on that screen with nothing under it. Settled by one run that presses Ⓑ well inside the idle window, timestamped. |
| P6 BGM — the sub-wave count | **is a music bank's LEADING REGION a stem, or a decoder artefact?** | Q10 | 🔴 **HANDOFF and the decoders disagree, and P6 ships the disagreement.** `media::sound_bank_riffs("BGM_103.slb")` returns **three** sub-waves; HANDOFF Q10's census says a music bank is *"exactly two waves of identical duration (32/32 banks on the disc)"*. The third comes from `slb.rs:380` `to_xma_riffs`, whose hybrid branch emits a leading headerless packet region ahead of the `RIFF` waves — and `docs/re/REFUTED.md` already records that region as what makes `BGM_106`–`BGM_109` *"break the two-wave rule"*. Derived at HANDOFF `9ca1eb5`. **The exporter sums all three and writes a manifest warning**, because choosing which sub-wave to drop is a decoding question and MISSION §2 forbids this exporter answering one. So the menu currently plays a sum of three things where the census predicts two. What settles it: whether that leading region carries music. Raised with the Decoder 2026-08-29. |
| P3 — the plate's ONSET | **does the plate become visible 2.13 s after settle, or does its GROUP START then?** | Q2 | 🔴 **new, and it is a disagreement between two of the Decoder's own numbers.** `docs/re/title-plate-delay-measured.md` (`auto/no-disc-and-menu-captures` at `fb536df`, **not on `main`**) measures the plate *becoming visible* at settle + **2.13 s**, and instructs the port to *"wait 2.13 s, composite build 2"*. Those are 3.97 s apart, because build 2 has a group of its own and the port plays it: `press_start`'s `ptbtn00` is alpha `0x00` at t=214, `0x00` at t=236 (it slides y 560→550 invisible), `0xff` at t=238 — **3.967 s** from group start to full alpha at 60 u/s. Neither landmark reconciles them: both groups starting together puts full alpha 0.38 s *before* build 4 settles (`title` settles at t=261 = 4.350 s); build 2 starting at settle puts it at settle + 3.97 s. Landing on settle + 2.13 s needs build 2's group to start 2.51 s after build 4's, which is neither. **The port ships the instruction, not its own arithmetic**, prints the discrepancy on every boot, and is not choosing. First thing to check, and it is about the instrument rather than the game: is *"title settled"* (the glyph counter first reading 154) the same instant as the port's last-element settle? Raised 2026-08-29. |
| ~~P3 — the plate's ONSET~~ | ~~visible 2.13 s after settle, or group starts then?~~ | Q2 | ✅ **resolved 2026-08-29, and the answer is AUTHOR NOTHING.** The port's refutation held and produced a better answer than either option it offered. Correction at `5b0a6e6` on `auto/no-disc-and-menu-captures`: **both builds run on one clock, started together**, and the plate arrives at its own declared `t=238`. Checked against this export rather than taken on trust — build 4's visible build-in ends at `t=118` (`pteff01`, `pteff02`, `ptlogoall_eff` finish together), `ptbtn00` reaches alpha 255 at `t=238`, difference **120 units = 2.000 s**, against a measured 2.138 / 2.132 s at an emulator presenting 28.1 fps rather than 30. The 2.13 s constant is **deleted**. |
| P3/P5 — `settle_time()` | **`rest.t` is not when a screen settles, and the port's sequencer uses it** | — | 🔴 **new, mine, and it is the premise that produced the wrong plate arithmetic.** `5b0a6e6` states it plainly: `rest.t` is the last *hold* keyframe before the exit. `title`'s `ptlogo1` has `rest.t=251` and stops **moving** at `t=42`, then creeps 5 px while its alpha crawls `0xe0`→`0xff` over 209 units. `ScreenView.settle_time()` returns the max `rest.t` — **4.350 s** for the title where the visible build-in is over at `t=118` = **1.967 s**. Everything the boot sequencer paces off that landmark is therefore late: `publisher_logo` is held to t=235, `developer_logos` to t=190, and `_script_settled` waits on it too. ⚠️ **Not changed this iteration**, because "visible arrival" is a heuristic and getting it wrong re-paces every screen; it needs its own gate. **What settles it outright:** the oracle is live — a timed boot with screen-to-screen transitions would give the real dwells directly. Asked 2026-08-29. |
| ~~P3/P5 — the title plate~~ | ~~does the idle title show `PRESS Ⓐ`~~ | Q2 | ✅ **answered and TAKEN at this iteration.** `auto/no-disc-and-menu-captures` at `fb536df`, `docs/re/title-plate-delay-measured.md`, traces in `docs/re/data/plate-timing-run{1,2}.tsv`. It is the third case: build 4 alone, then the plate composited over it. ⚠️ The delay is timed from where build 4 **stops animating**, not from where it first appears — measured the other way the two runs differ by 0.48 s against 6 ms. `ScreenView` now draws two builds at once, as a second `ScreenView` in the same `SubViewport` rather than a subordinate screen inside one. The onset question above is what is left. |
| P3 — the plate's PULSE | **what period does the plate pulse at, and which group boundary repeats?** | Q2 | ❔ **open, and the port draws no pulse.** The same finding measures the running plate pulsing continuously — peak/trough intervals 2.12 / 2.19 / 2.34 / 2.31 s, mean **2.24 s**. `press_start`'s group encodes exactly one cycle (`0x00` → `0xff` at t=238–244 → `0x00` untimed), and **no reading of it produces 2.24 s**: the whole group is 268 units = 4.47 s, and from its first keyframe 54 units = 0.90 s. So repeating the group would be inventing a period. The port holds the plate at its settle (t=238, alpha `0xff`), which is what it does on every other screen and what the static oracle capture `live-title-press-a.png` shows. What settles it: which instant the group restarts from. |
| P5 focus ring — implementation | ~~the ring's spin period~~ | Q1 | ✅ answered (2.177 s, `4fa3099`) and **still not implemented** — the port draws 0°, a pose the corpus says the game never shows. Not blocked on anybody; it is queued behind P3's plate this iteration. |
| P3 — the plate's PULSE | **does the plate's focus record loop, and with what period?** | Q2 | ❔ **open, and the port's earlier reading of it was wrong.** The port had looked for the pulse in `ptbtn00`'s own group; `5b0a6e6` identifies it as the plate's **focus record** `ptbtn00f` — a glow ramping alpha `0x00`→`0x50` and back, t=6…105. Measured on the running game at 2.12 / 2.19 / 2.34 / 2.31 s, mean **2.24 s**. 🟡 **The port has not taken it.** Looping that record needs a period, and its group is 105 timed units plus the **authored** 24-unit exit ramp = 129 units = 2.15 s — composing an authored constant with a loop assumption to land on a measured number is tuning, not measuring. Separately: the port draws no focus record on `press_start` at all, because the screen has no `buttons` and nothing is focused, so *whether the game always draws it* is its own question. |
| ~~P5 focus ring — implementation~~ | ~~the ring's spin period~~ | Q1 | ✅ **implemented 2026-08-29.** `ScreenView.spin_period_units` drives it: one turn per the element's own declared `t`, looping, from the screen clock. The period comes off the **disc**; what the RE agent supplied is that the turn repeats rather than stopping. Verified on the port's own render — the ring is bit-identical one period apart across the whole frame, differs by 3.6/255 inside its box at quarter-period steps, and conserves box luminance to **0.027 %** over eight phases, which is the same observable the RE agent used to separate rotation from a pulse. 🟡 **Direction is not measured** — the port turns 0°→+360°, which is the sign the disc declares, but the RE agent's angle estimators failed their controls and no signed angle was ever taken. 🟡 **Phase across a focus change is not measured** either: the port drives the ring off the screen clock, so it does not reset when focus moves. Settled by two frames straddling a focus change. |
## Answered since this file was last written — no longer blocking

151
docs/port/DECISIONS.md
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@@ -1750,3 +1750,154 @@ Two things the run made obvious and that are now fixed:
of the title". It applies **no** delay: the delay is a measurement and lives in
`authored/flow.json`. The boot-mode narration is suppressed there, because a
log line that describes a sequence it is not running is worse than no log line.
## P5 — the focus ring spins, 2026-08-29
The ring was drawn at 0° and the file said so: *"THIS IS KNOWN TO BE WRONG, and
is drawn anyway because the right answer is a guess."* What was missing was the
**period**, and it is now measured — `docs/re/focus-ring-spin-measured.md`
(`auto/no-disc-and-menu-captures` at `4fa3099`): a continuous spin, from eight
evenly spaced autocorrelation peaks over nine revolutions, **with no angle
estimated anywhere** — both angle estimators failed their own controls and were
not used.
### The period comes off the disc; the RE agent supplied only that it repeats
`ptbtneff01` declares two keyframes that differ in **nothing but**
`rotation_deg`, 0 → 360, the first timed at `t = 120` and the second untimed.
The port turns once per **120 units**. Nothing is authored: the number is on the
disc, and what the measurement adds is that the turn **repeats** rather than
stopping at 360 = 0, which "groups hold" could not distinguish because those are
the same pose.
`ScreenView.spin_period_units` is the rule, and it is structural and narrow:
exactly two keyframes, differing only in rotation, by a full 360, first timed and
second untimed. **Disc-wide check over this export: 16 of 212 elements match, and
all 16 are focus rings** — `ptbtneff01` on the five main-menu buttons and
`ptbtneff02` on the three `EXTRAS` buttons, in both locales, every one declaring
`t = 120`. Zero false positives.
That check is the point rather than a formality. The measurement was taken on
**one** button of **one** screen; a rule that also caught something else would be
extrapolating it to elements nobody watched.
⚠️ It is a rule about **shape**, not a decoded field. Nothing on the disc says
"this loops". The day a loop flag is decoded, this goes.
### Verified on the port's own render, with the RE agent's own control
Captures at `--time=` 2.0 … 4.0 s on the settled main menu, `ptbtn01` focused:
| | |
|---|---|
| t=2.0 vs t=4.0 (one full period apart), **whole frame** | **0.0000 / 255** — bit-identical |
| t=2.5, 3.0, 3.5 against t=2.0, inside the ring's box | 3.60, 3.71, 3.58 / 255 |
| sum of box luminance across **eight** phases | spread **0.027 %** of the mean |
The last row is deliberately the RE agent's own observable: they separated
rotation from a brightness pulse by showing total annulus brightness is conserved
while per-bin brightness moves. The port's render conserves it to 0.027 % (theirs
was 0.4 % over 16 s, with capture noise in it). A filmstrip of the four
quarter-period phases shows the bright head at top, right, bottom, left.
### Two things it does not settle
* **Direction.** The port turns 0° → +360°, the sign the disc declares. No signed
angle was ever measured — the estimator that would have given one failed its
control and was not used.
* **Phase across a focus change.** The port drives the ring off the **screen**
clock, so moving the cursor does not restart the turn. The alternative — the
record's group restarting when the record is instantiated — is the stronger
claim, and the oracle run held focus on one button throughout, so nothing
separates them. Two frames straddling a focus change would.
## P3, corrected — the plate needs no authored delay at all, 2026-08-29
Last iteration the port refuted the RE agent's authoring instruction (*"when
build 4 has settled, wait 2.13 s, composite build 2"*) with arithmetic off the
disc, shipped the instruction anyway rather than pick between two of their
numbers, and printed the discrepancy on every boot.
**The refutation held, and the answer that came back is better than either option
the port offered: author nothing.** `5b0a6e6`.
### The premise that failed was the port's, and it will bite again
> 🔴 **`rest.t` is not when a screen settles.** It is the last *hold* keyframe
> before the exit.
Checked here rather than taken on trust. `title`'s `ptlogo1`:
```
t=26 (-116,-7) 150% a=0x00 the pre-roll
t=42 (179,186) 101% a=0xe0 it has arrived
t=251 (184,193) 100% a=0xff 5 px and 31 alpha steps later, 3.5 s on
```
It **stops moving at t=42** and then creeps for 209 units. `rest.t = 251` is the
end of that creep, not the arrival. The title's visible build-in is over at
**`t = 118`**, where `pteff01`, `pteff02` and `ptlogoall_eff` finish together.
Every reconciliation the port computed last iteration was wrong by exactly that
error: reading `rest.t` put build 4's arrival at 4.350 s instead of 1.967 s, and
the "2.51 s, which is not a landmark of anything" that looked so damning is
`(4.350 − 1.967) + 0.13` — the error itself, wearing a decimal point.
### One clock, and the interval is declared
| | units |
|---|---|
| build 4's last build-in ramp | `t = 118` |
| `ptbtn00` reaches `a = 255` | `t = 238` |
| **difference** | **120 units = 2.000 s** |
Measured: **2.138 s** and **2.132 s**. The 6.7 % is presentation rate — 120 units
in 2.135 s is 56.2 units/s, the emulator running 28.1 fps against a nominal 30,
and the corpus had independently measured the idle title at 28.5 fps *before*
these runs.
So `authored/flow.json` carries `"clock": "shared"` and **no delay**, `boot.gd`
raises the overlay when the step's screen loads rather than at its settle, and
`overlay.time_units = view.time_units` — assigned, not accumulated, because two
independently advanced clocks drift by a frame here and there and the whole
content of the finding is that 120 units is a fixed interval on one timeline.
⚠️ **The general hazard, stated by the RE agent and worth repeating where the
port will read it: discount a wall-clock number off that oracle by ~6 %.** It is
Canary's presentation rate baked into whatever it measures. A port at a true
30 Hz that authored 2.13 s would be visibly late.
### Refutation — two of the RE agent's numbers for the same 120 units disagree by 2 %
Both findings measure the same declared quantity: **120 keyframe units of wall
clock, during a static hold, in Xenia Canary.**
| | | implied presentation |
|---|---|---|
| plate: settle → plate, two runs | 2.138, 2.132 s → mean **2.135 s** | 28.10 fps |
| ring: one revolution, seven spacings | 2.18 2.16 2.18 2.16 2.16 2.20 2.20 → mean **2.177 s** | 27.56 fps |
| **disagreement** | **0.042 s = 1.97 %** | |
That is **seven times** the plate finding's own run-to-run agreement of 6 ms, and
it lands on the argument that finding uses to justify trusting itself: *"the
build-in is where frames are dropped; the static hold is not. A model in which
the game's own timing varied would have to move both."* Two static-hold
measurements are exactly what should agree under that model.
A second, smaller arithmetic slip in the same place: the ring page reconciles
2.177 s against a band of "27.6–28.8 fps", saying the measurement *"sits at the
top of that band"*. It does not sit in it. 60 rendered frames at 27.6 fps is
2.1739 s; the mean needs **27.56 fps** and the two slowest spacings (2.20 s)
need **27.27 fps**. Four of the seven spacings are above the band's top.
**Verdict: the containment claim is refuted; the spin, the period and the
reconciliation are untouched.** Either the presentation rate genuinely differed
between the two sessions — which the plate page's own corroboration argues
against for static holds — or the ring's revolution is not exactly 120 units.
The corpus should say which, because they are the same claim measured twice.
🟢 **Nothing in the port moves either way.** `spin_period_units` uses the
declared 120 units at 60 units/s = **2.000 s of port time**, which is the
true-30 Hz value both readings agree the disc means. This is a corpus
consistency problem, not a port one — which is why it is filed rather than
worked around.

69
port/scripts/boot.gd
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@@ -52,9 +52,14 @@ var audio: MenuAudio = null
## The second build, drawn OVER `view`. The boot title is the only place in this
## port where two builds are on screen at once (`authored/flow.json`, the boot's
## `title` step): build 4 presents alone, and the `PRESS Ⓐ BUTTON` plate --
## build 2 -- is composited over it 2.13 s after build 4 settles. MEASURED, two
## boots agreeing to 6 ms; see the step's `why`.
## `title` step): build 4 presents alone and the `PRESS Ⓐ BUTTON` plate -- build
## 2 -- arrives later.
##
## **They share one clock, started together, and there is no authored delay.**
## The plate arrives at its own declared `t = 238`; build 4's visible build-in
## ends at `t = 118`; the 120-unit difference is 2.000 s, against an oracle that
## measured 2.138 s and 2.132 s at an emulator presenting 28.1 fps rather than
## 30. A port running at a true 30 Hz wants the declared 120, not the wall clock.
##
## A second ScreenView rather than a second screen inside one, because that is
## what "two builds at once" actually is: each has its own timeline, its own
@@ -198,6 +203,16 @@ func _ready() -> void:
# so what it photographs is the real composite and not a mock-up. It applies
# NO delay: the delay is a measurement and lives in `authored/flow.json`,
# where the boot reads it.
# A boot whose FIRST step declares an overlay: `_advance` raises it for every
# later step, and `_ready` is the one with no `_advance` in front of it.
# Today only the last step has one, so this is a guard rather than a fix --
# but a silently missing second build is exactly the failure P3 just spent an
# iteration on.
if not _sequence.is_empty() and typeof(_sequence[0].get("overlay", null)) == TYPE_DICTIONARY:
_overlay_spec = _sequence[0]["overlay"]
_overlay_due = 0.0
_overlay_process(0.0)
if args.has("overlay") and not args.has("boot"):
_overlay_spec = {"screen": args["overlay"]}
_overlay_due = 0.0
@@ -272,12 +287,11 @@ func _process(delta: float) -> void:
# finding, not a detail: measured from first-draw the two oracle
# runs disagree by 0.48 s, because the build-in's own duration is
# the emulator's frame pacing rather than the game's clock.
var spec: Variant = _sequence[_step].get("overlay", null)
if typeof(spec) == TYPE_DICTIONARY:
_overlay_spec = spec
_overlay_due = _elapsed + float(spec.get("after_settle_seconds", 0.0))
print(" overlay %s due at %.2f s (+%.2f s after settle)"
% [spec.get("screen", "?"), _overlay_due, _overlay_due - _elapsed])
if overlay != null:
# It was raised with the screen, 120 units ago. Nothing to do
# here any more -- this hook used to start an authored 2.13 s
# timer, and the timer was the bug.
pass
# P5 takes over here: the boot ends on the title and the title has
# somewhere to go. Without `--play` the run still stops, because a
# boot that ends by waiting for a key it will never get is worse
@@ -304,6 +318,14 @@ func _advance() -> void:
if not view.load_screen(view.tree, name):
push_error(view.tree.error)
get_tree().quit(2)
return
# The second build starts WITH the first, not after it. Raised here rather
# than at the screen's settle, which is what the authored-delay version did.
var spec: Variant = next.get("overlay", null)
if typeof(spec) == TYPE_DICTIONARY:
_overlay_spec = spec
_overlay_due = _elapsed
_overlay_process(0.0)
## Play one transcoded movie, full-bleed over the screen.
@@ -716,7 +738,11 @@ var _overlay_due: float = 0.0
func _overlay_process(delta: float) -> void:
if overlay != null:
overlay.time_units += delta * overlay.units_per_second
# ONE CLOCK. Not `+= delta * ups` on each independently: they would drift
# apart by a frame here and there, and the whole content of the finding
# is that the 120 units between build 4's last ramp and the plate's
# `a=255` is a fixed interval on a shared timeline.
overlay.time_units = view.time_units
overlay.queue_redraw()
if _overlay_quit_at >= 0.0 and _elapsed >= _overlay_quit_at:
print("boot ends on %s + %s at %.2f s"
@@ -763,26 +789,17 @@ func _raise_overlay(name: String) -> void:
# this. Give the plate its own group time to play before leaving, so the
# artifact shows the composited state rather than the frame it began on.
var visible_at := overlay.settle_time() / overlay.units_per_second
# The two lines below describe a BOOT. `--screen --overlay=` raises the same
# composite with no delay, as a fast check, and must not narrate a sequence
# it is not running -- a log line that lies is worse than no log line.
# `--screen --overlay=` uses the same code path as a fast check and must not
# narrate a sequence it is not running: a log line that lies is worse than
# no log line.
if _sequence.is_empty():
return
# 🔴 SAY THE NUMBER OUT LOUD. `authored/flow.json` implements the RE agent's
# instruction literally -- "when build 4 has settled, wait 2.13 s, composite
# build 2" -- and build 2 then takes its OWN declared 238 units to fade in.
# So the plate is first VISIBLE at settle + 2.13 + 3.97 s, while the thing
# that was measured is the plate becoming visible at settle + 2.13 s. The two
# cannot both be right and the port is not the one to choose. Printed on
# every boot so the disagreement cannot go quiet.
print(" ⚠ plate raised at settle+%.2f s but its own group reaches full alpha %.2f s later, \
so it is first VISIBLE at settle+%.2f s -- the measurement is settle+%.2f s. See docs/port/BLOCKED.md."
% [float(spec.get("after_settle_seconds", 0.0)), visible_at,
float(spec.get("after_settle_seconds", 0.0)) + visible_at,
float(spec.get("after_settle_seconds", 0.0))])
print(" plate reaches full alpha at t=%d (%.2f s on the shared clock), \
120 units after build 4's last build-in ramp at t=118"
% [int(overlay.settle_time()), visible_at])
if not _play and _film == "":
_overlay_quit_at = _elapsed + visible_at
print(" boot ends at %.2f s, once the plate has settled" % _overlay_quit_at)
print(" boot ends at %.2f s, once the plate has arrived" % _overlay_quit_at)
# `spec` is read only for the log; the reasoning lives in flow.json where a
# reader looking for a decision will find it.
if spec.has("why"):

70
port/scripts/screen_view.gd
View File

@@ -228,6 +228,41 @@ static func settle_units(element: Dictionary) -> float:
return last
## How long one turn takes, in keyframe units, for an element that spins — or 0.
##
## The rule is STRUCTURAL and narrow: exactly two keyframes, differing in
## **nothing but** `rotation_deg`, by a full 360, with the first timed and the
## second untimed. The period is the first keyframe's declared `t`.
##
## Its disc-wide check, over this export: **16 of 212 elements match, and all 16
## are focus rings** — `ptbtneff01` on the five main-menu buttons and
## `ptbtneff02` on the three `EXTRAS` buttons, in both locales, every one of them
## declaring `t = 120`. Zero false positives. That matters because the rule is
## applied on the strength of a measurement taken on **one** button of one
## screen; a rule that also caught something else would be extrapolating from
## that measurement to elements nobody watched.
##
## ⚠️ It is a rule about SHAPE, not a decoded field. Nothing on the disc says
## "this loops". What the disc says is 0° → 360° over `t`; what the RE agent
## measured is that the turn repeats rather than stopping. Those are two
## different sources and the day a loop flag is decoded, this goes.
static func spin_period_units(element: Dictionary) -> float:
var frames: Array = element.get("keyframes", [])
if frames.size() != 2:
return 0.0
var a: Dictionary = frames[0]
var b: Dictionary = frames[1]
if not a.has("t") or b.has("t"):
return 0.0
for key in ["pos", "scale", "tint_rgba", "fade_argb"]:
if a.get(key) != b.get(key):
return 0.0
if absf(float(b.get("rotation_deg", 0)) - float(a.get("rotation_deg", 0))) != 360.0:
return 0.0
var t := float(a["t"])
return t if t > 0.0 else 0.0
## The moment the whole screen has arrived: the last element to reach its hold.
func settle_time() -> float:
var last := 0.0
@@ -326,26 +361,33 @@ func _draw_focus(element: Dictionary) -> void:
if tex == null:
skipped.append("%s (focus sprite failed to load)" % fe.get("id", ""))
continue
# The ring's rest pose, which is rotation_deg 0.
# The ring spins, and until 2026-08-29 this drew it at 0 -- a pose the
# running game never shows -- because the PERIOD was the missing piece
# and a spin rate would have been invented.
#
# ⚠️ THIS IS KNOWN TO BE WRONG, and is drawn anyway because the right
# answer is a guess. The spin is real -- rotation_deg ramps 0 -> 360
# with position, scale and alpha all constant -- and measuring the two
# oracle captures says the game never shows 0: the same sprite sits at
# ~76 deg with NEW GAME focused and ~210 deg with OPTIONS focused,
# 134 deg apart at peak correlation 0.97 against a null control of 0.37
# (docs/port/DECISIONS.md, "the focus ring IS drawn rotated").
# It is no longer invented. `docs/re/focus-ring-spin-measured.md`
# measures a continuous spin, period 2.177 s wall-clock, from eight
# evenly spaced autocorrelation peaks over nine revolutions, with NO
# angle estimated anywhere -- both angle estimators failed their own
# controls and were not used. It reconciles with the declared `t = 120`
# without a new constant: 120 units is 60 rendered frames, 2.00 s at a
# true 30 Hz and 2.08-2.17 s at the 27.6-28.8 fps that emulator runs.
#
# What is missing is the PERIOD, and it has two unknowns, both the
# Decoder's: the ramp's second keyframe is untimed, and "groups hold"
# predicts a stop at 360 = 0, which is not what either capture shows.
# Holding at 0 is the pose that invents nothing; a spin rate would be
# invented. See docs/port/BLOCKED.md.
# So the period comes off the DISC -- the element's own declared `t` --
# and what the RE agent supplied is that one turn takes exactly that
# long and repeats. See `spin_period_units` for the rule and its check.
var pose: Dictionary = fe.get("rest", {})
var pivot := _vec(fe.get("pivot", [0, 0]))
var pos := _vec(pose.get("pos", [0, 0]))
var period := spin_period_units(fe)
var rot := _rot_of(pose)
if period > 0.0:
# `time_units` raw, NOT the pose clamped by `holding`: a spinning
# ring is the one thing on the settled main menu that keeps moving,
# and the whole point of the finding is that it does not stop.
rot = 360.0 * fposmod(time_units, period) / period
_draw_quad(tex, placement(pose, pivot, tex.get_size()), modulate_of(pose),
pivot, pos, _rot_of(pose))
pivot, pos, rot)
drawn.append(fe.get("id", ""))