Commit Graph

2 Commits

Author SHA1 Message Date
Sylpheed RE agent
3fa898093f isl: rename built-ins 8/9/93 to stopwatch_start/_elapsed/_stop
They are start / read / stop of one of 32 per-phase stopwatches, not
flag operations.  123-127 keep timer_* -- that is the mission timer,
five scalars at [phase+304..320], a different clock.

Artefact check: 84 lines changed across 5 files and all 84 pair
exactly with their old-name partners once column padding is
normalised (0 removed lines without an old name, 0 added lines
without a new one).  data/isl-timers.txt reproduces the same
675/675, 11.2 % control, 82/1 and identical histograms, which is
what shows the rename is cosmetic.

Also withdraws a label from the previous commit: sub_8230C398 is NOT
the message pump.  It runs every frame but drains nothing -- a state
machine on [0x828E1F8C] that only allocates, builds strings, looks up
and PUSHES.  And bus+8216 is weak evidence: sub_82254A08 is a generic
map find with ~120 sites, and the key looked up is a pointer, not a
tag.  The open handle is now the ring buffer at bus+4, not bus+8216.
2026-08-27 09:21:04 +00:00
Sylpheed RE agent
dde62c9afe re: read_freg counts SECONDS -- the 32 "flags" are a stopwatch bank
The open question was the unit, not the array.  Following the writers of
[phase+88] settles it:

  * sub_822710D0(phase, dt), called from ScriptPhase::Update, does
    prev[i] = cur[i] then, only while [phase+120][i] == 1, cur[i] += dt --
    so +88/+104/+120 are current / previous / running, 32 entries each.
  * dt is seconds by a non-circular round trip: frames * (1/60) * 10000
    -> clamp 3200 -> * 1e-4, in the timing singleton at [0x828F35B4].
    The clamp is 0.32 s, a frame ceiling.
  * 675/675 timeline kinds are indices their own phase starts (control
    11.2 %), which is why kind is only ever 0 or 5.

Corrects isl-builtins.md twice: set_flag writes 0.0 not 1.0, and
clear_flag clears the running flag rather than the value.  Confirms its
grouping of 8/9/93 as one family.  Docs only -- all seven ISL artefacts
regenerate byte-identical.
2026-08-27 08:48:49 +00:00