Gitea #51 ROOT CAUSE: LoopAtWill was mapped to "loop forever", arming 224 of 603 samples as endless OpenAL sources
SAURON's "coolant flush sound glitched and perma" is one instance of a systemic
defect. SetupPatch (L4AUDLVL.cpp) decided looping from the SAMPLE flag alone:
AL_LOOPING = (info.loop != ForceStatic)
That armed every non-ForceStatic sample -- 224 of the 603 authored zones,
including unmistakable one-shots -- as an OpenAL source that never ends on its
own. Any such sound whose note-off never arrives plays forever. Measured 1946
LoopAtWill x Transient arming events in one short session.
The sample flag expresses PERMISSION; the SOURCE decides. Three facts [T1]:
* the enum's own comments (L4AUDLVL.h:14-19) -- LoopAtWill = "will play once
OR LOOP AS DESIRED", ForceStatic = "plays only once EVEN IF LOOPED" (a
veto), LoopAlways = "ramp up and then down";
* LoopAtWill is enum value 0, i.e. the DEFAULT an unauthored sample receives
(WTPresets.cpp:37) -- it cannot mean "loop forever";
* LoopAlways, the real always-loop, is used by ZERO shipped samples.
"As desired" is the source's authored AudioRenderType (Transient=one-shot vs
Sustained=held), streamed from AUDIO*.RES (AUDLVL.cpp:28) and already consulted
by the renderer (L4AUDRND.cpp:567, AUDREND.cpp:184). SetupPatch now takes it,
threaded from all three L4AudioSource call sites (Direct/Dynamic3D/Static3D).
New rule: LoopAlways->1, ForceStatic->0, LoopAtWill->the source's render type.
MEASURED before changing behaviour (BT_LOOP_AUDIT=1, scratchpad/loopaudit.py):
LoopAtWill x Transient -> loop=0 (was 1) 1946 events
LoopAtWill x Sustained -> loop=1 unchanged 65 events
ForceStatic x Transient -> loop=0 unchanged 292 events
The engine loops (EngineAccel07_z0..z2, EngineMotor01, EnginePower01) are all
LoopAtWill/Sustained and PRESERVED -- no regression there. All 24 reclassified
samples are genuine one-shots: laser charge/fire/explosion/loaded, missile
loading, engine shift, coolant pressure inc/dec.
A/B PROOF (scratchpad/loopab.py, same session both arms, only BT_LOOP_LEGACY
differs), asking the engine's own BT_AUDIO_DUMP what is still playing with
loop=1 long after every release:
[legacy] EnginePower01, CoolantPresInc03_z2, CoolantPresDcr03_z2
[fixed] EnginePower01
The two stuck coolant sources are the reported symptom. They were eventually
reclaimed when a later trigger reused the source, which is why the bug was
intermittent -- the "perma" case is when nothing else retriggers it. The fix
removes the mechanism.
BT_LOOP_LEGACY=1 restores the old rule for a field A/B without a rebuild. The
layers to listen to are the beam sustains: LaserA/CSustain* are authored
LoopAtWill on a TRANSIENT source, so they now end with the sample instead of
looping until note-off. The render type is T1 authored data; the interpretation
that LoopAtWill defers to it is a strong reading of the enum + defaults rather
than a disassembled statement, and is flagged as such in the KB.
Plausibly bears on #32 (audio cutting in/out late in a match): a stuck looping
source holds its pool slot for the rest of the round.
Rigs: scratchpad/flushsnd.py (flush start/stop pairing), flushsnd2.py (stuck-
source hunt), loopaudit.py (the classification matrix), loopab.py (the A/B).
KB: context/wintesla-port.md audio section, context/decomp-reference.md env
table (BT_LOOP_AUDIT / BT_LOOP_LEGACY / BT_AUDIO_DUMP / BT_AUD_TAIL),
docs/AUDIO_FIDELITY.md F38. checkctx.py CLEAN.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
arcattack
co-authored by
Claude Opus 5
Claude Opus 5
parent
f3bdb3b85a
commit
d39227ef39
@@ -0,0 +1,113 @@
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"""Reproduce Gitea #51 -- the coolant flush sound loops forever (SAURON, night 3).
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Uses the built-in scripted flush (BT_FLUSH_TEST=<frame>): holds the flush for ~60
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sim frames, then releases. Instruments all four layers of the chain so the stuck
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stage is identifiable rather than guessed:
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[flush-tx] the input dispatch edge (mech4.cpp:5566 -- PRESS / RELEASE pair)
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[flush] the reservoir drain (heatfamily_reslice.cpp:772, while alarm==1)
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[aud-tail] OpenAL PLAY / STOP per source, with the LoopAtWill flag + release time
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[audio] PlayNote / StopNote calls
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PASS = one PRESS + one RELEASE, the [flush] drain STOPS after the release, and every
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CoolantDump source that got a PLAY also gets a STOP. A stuck sound shows up as
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either repeated PLAY lines with no STOP (per-frame re-trigger -- PlayNote restarts
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any source not currently AL_PLAYING) or a PLAY with no matching STOP at all.
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Runs well past the release so a late re-trigger is visible. Kills only its own PID.
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"""
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import os
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import re
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import subprocess
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import sys
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import time
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REPO = r"C:\git\bt411"
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LOG = os.path.join(REPO, "scratchpad_flushsnd.log")
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if os.path.exists(LOG):
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os.remove(LOG)
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env = dict(os.environ)
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env.update({
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"BT_START_INSIDE": "1",
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"BT_DEV_GAUGES": "1",
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"BT_FLUSH_TEST": "300", # press at sim frame 300, release 60 frames later
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"BT_FLUSH_LOG": "1",
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"BT_AUD_TAIL": "1",
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"BT_AUDIO_LOG": "1",
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"BT_LOG": LOG,
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})
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proc = subprocess.Popen(
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[os.path.join(REPO, "build", "Release", "btl4.exe"), "-egg", "LAST.EGG"],
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cwd=os.path.join(REPO, "content"), env=env,
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stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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print("pid", proc.pid)
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try:
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deadline = time.time() + 260
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released = False
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while time.time() < deadline:
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if os.path.exists(LOG):
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t = open(LOG, errors="replace").read()
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if "[flush-tx] InjectCoolant RELEASE" in t:
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released = True
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break
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time.sleep(2)
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# keep running well past the release -- a late re-trigger is the whole point
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time.sleep(20)
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finally:
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proc.terminate()
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time.sleep(1)
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t = open(LOG, errors="replace").read() if os.path.exists(LOG) else ""
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tx = re.findall(r"^\[flush-tx\].*$", t, re.M)
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drain = re.findall(r"^\[flush\].*$", t, re.M)
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tail = re.findall(r"^\[aud-tail\].*$", t, re.M)
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# pair PLAY/STOP per source, and flag which sources carry the LoopAtWill flag
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plays, stops, loopy = {}, {}, set()
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for l in tail:
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m = re.search(r"(PLAY|STOP) src=(\d+).*?file=(\S+)", l)
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if not m:
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continue
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kind, src, f = m.group(1), m.group(2), m.group(3)
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(plays if kind == "PLAY" else stops).setdefault((src, f), 0)
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(plays if kind == "PLAY" else stops)[(src, f)] += 1
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if kind == "PLAY" and "loop=1" in l:
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loopy.add((src, f))
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print("\n=============== RESULT ===============")
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print("reached the release edge:", released)
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print("\n[flush-tx] dispatch edges:", len(tx))
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for l in tx:
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print(" ", l[:120])
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print("\n[flush] drain samples:", len(drain), "(should stop at the release)")
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for l in drain[:4]:
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print(" ", l[:120])
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if len(drain) > 4:
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print(" ... last:", drain[-1][:120])
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print("\nOpenAL source pairing (coolant layers only):")
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allk = sorted(set(plays) | set(stops))
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unbalanced = []
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for k in allk:
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if "Coolant" not in k[1] and "coolant" not in k[1]:
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continue
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p, s = plays.get(k, 0), stops.get(k, 0)
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flag = " LoopAtWill" if k in loopy else ""
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print(" src=%-5s %-28s PLAY=%d STOP=%d%s" % (k[0], k[1], p, s, flag))
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if p > s:
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unbalanced.append((k, p, s))
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print("\nTotal [aud-tail] lines:", len(tail))
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if unbalanced:
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print("\n*** UNBALANCED (sound left running / re-triggered):")
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for k, p, s in unbalanced:
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print(" %s %s PLAY=%d STOP=%d" % (k[0], k[1], p, s))
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verdict = ("REPRODUCED -- a coolant source plays more than it stops" if unbalanced
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else ("clean pairing this run -- flush start/stop balanced" if tail
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else "NO [aud-tail] output -- audio path never fired (check the rig)"))
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print("\nVERDICT:", verdict)
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sys.exit(0)
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@@ -0,0 +1,117 @@
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"""Gitea #51 part 2 -- catch the STUCK looping coolant source red-handed.
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Part 1 (flushsnd.py) showed the flush picks one of five CoolantDump variants and
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that the note-off does arrive. But three of the five variants contain a zone
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authored **LoopAtWill**, and SetupPatch (L4AUDLVL.cpp:290-296) maps anything that
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is not ForceStatic to **AL_LOOPING = 1** -- an OpenAL source that never ends on
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its own. The enum's own comment says LoopAtWill means "will play once OR loop as
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desired" (L4AUDLVL.h:16), i.e. permission to loop, not a command.
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So: drive several flushes (variant selection differs per trigger), then sit idle
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and use the engine's own BT_AUDIO_DUMP once-a-second playing-source dump to see
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whether anything is STILL playing with loop=1 long after the last release.
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PASS (bug absent) = no [playing] lines with loop=1 after the idle period.
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FAIL (bug present) = a coolant source still playing with loop=1 forever.
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Kills only the PID it spawns.
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"""
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import ctypes
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import os
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import re
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import subprocess
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import sys
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import time
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KEYUP = 0x0002
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VK_H = 0x48
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user32 = ctypes.windll.user32
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REPO = r"C:\git\bt411"
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LOG = os.path.join(REPO, "scratchpad_flushsnd2.log")
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if os.path.exists(LOG):
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os.remove(LOG)
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env = dict(os.environ)
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env.update({
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"BT_START_INSIDE": "1",
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"BT_KEY_NOFOCUS": "1",
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"BT_DEV_GAUGES": "1",
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"BT_FLUSH_LOG": "1",
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"BT_AUD_TAIL": "1",
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"BT_AUDIO_DUMP": "1", # once-a-second dump of every PLAYING source + its loop flag
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"BT_LOG": LOG,
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})
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proc = subprocess.Popen(
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[os.path.join(REPO, "build", "Release", "btl4.exe"), "-egg", "LAST.EGG"],
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cwd=os.path.join(REPO, "content"), env=env,
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stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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print("pid", proc.pid)
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def tap(hold=0.35):
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user32.keybd_event(VK_H, 0, 0, 0)
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time.sleep(hold)
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user32.keybd_event(VK_H, 0, KEYUP, 0)
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try:
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deadline = time.time() + 240
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while time.time() < deadline:
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if os.path.exists(LOG) and "first frame" in open(LOG, errors="replace").read():
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break
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time.sleep(2)
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else:
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print("FAIL: never reached the mission")
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proc.terminate()
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sys.exit(2)
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time.sleep(6)
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# six flushes, spaced -- the variant selection differs per trigger
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for i in range(6):
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tap()
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print(" flush %d dispatched" % (i + 1))
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time.sleep(3.0)
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print(" idling 25s -- anything still playing now is STUCK")
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idle_mark = len(open(LOG, errors="replace").read())
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time.sleep(25)
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finally:
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proc.terminate()
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time.sleep(1)
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t = open(LOG, errors="replace").read() if os.path.exists(LOG) else ""
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tail_t = t[idle_mark:] if "idle_mark" in dir() else t
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tx = re.findall(r"^\[flush-tx\].*$", t, re.M)
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variants = sorted(set(re.findall(r"file=(CoolantDump\d+_z\d+\.wav)", t)))
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# playing-source dumps recorded DURING the idle window (post-release)
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idle_play = re.findall(r"^\[playing\].*$", tail_t, re.M)
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stuck = [l for l in idle_play if "loop=1" in l]
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stuck_coolant = [l for l in stuck if "oolant" in l]
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print("\n=============== RESULT ===============")
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print("[flush-tx] edges:", len(tx), "(expect 12 = 6 press + 6 release)")
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print("coolant zones that actually played:", len(variants))
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for v in variants:
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print(" ", v)
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print("\n[playing] lines during the 25s IDLE window:", len(idle_play))
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seen = {}
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for l in idle_play:
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m = re.search(r"src=(\d+) (\S+).*loop=(\d+)", l)
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if m:
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seen[(m.group(1), m.group(2), m.group(3))] = seen.get((m.group(1), m.group(2), m.group(3)), 0) + 1
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for (src, nm, lp), n in sorted(seen.items(), key=lambda kv: -kv[1]):
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print(" src=%-4s %-28s loop=%s seen %dx" % (src, nm, lp, n))
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print("\nSTILL PLAYING with loop=1 after all releases:", len(stuck))
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print(" ...of which coolant:", len(stuck_coolant))
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for l in stuck_coolant[:5]:
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print(" ", l[:120])
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print("\nVERDICT:", "REPRODUCED -- a looping coolant source outlives its release (#51)"
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if stuck_coolant else
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("looping sources stuck, but not coolant -- same class, different sample"
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if stuck else "no stuck looping source in this run"))
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sys.exit(0)
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@@ -0,0 +1,112 @@
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"""Gitea #51 A/B -- prove the stuck coolant sound before the fix, and gone after.
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Same session both ways; the only difference is BT_LOOP_LEGACY, which selects the
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OLD loop rule (`AL_LOOPING = sample != ForceStatic`) vs the new one (a LoopAtWill
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sample defers to the source's authored AudioRenderType).
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The measurement is the engine's own once-a-second playing-source dump
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(BT_AUDIO_DUMP): after all the flush releases, sit idle, then ask what is STILL
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playing with loop=1. A coolant source in that list is #51 reproduced.
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Kills only the PIDs it spawns.
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"""
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import ctypes
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import os
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import re
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import subprocess
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import sys
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import time
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KEYUP = 0x0002
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VK_H = 0x48
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VK_C = 0x43
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user32 = ctypes.windll.user32
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REPO = r"C:\git\bt411"
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def run(legacy):
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tag = "legacy" if legacy else "fixed"
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log = os.path.join(REPO, "scratchpad_loopab_%s.log" % tag)
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if os.path.exists(log):
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os.remove(log)
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env = dict(os.environ)
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env.update({
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"BT_START_INSIDE": "1",
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"BT_KEY_NOFOCUS": "1",
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"BT_DEV_GAUGES": "1",
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"BT_AUDIO_DUMP": "1",
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"BT_FLUSH_LOG": "1",
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"BT_LOG": log,
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})
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if legacy:
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env["BT_LOOP_LEGACY"] = "1"
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else:
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env.pop("BT_LOOP_LEGACY", None)
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p = subprocess.Popen(
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[os.path.join(REPO, "build", "Release", "btl4.exe"), "-egg", "LAST.EGG"],
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cwd=os.path.join(REPO, "content"), env=env,
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stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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print("[%s] pid %d" % (tag, p.pid))
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try:
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deadline = time.time() + 240
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while time.time() < deadline:
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if os.path.exists(log) and "first frame" in open(log, errors="replace").read():
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break
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time.sleep(2)
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else:
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p.terminate()
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return tag, None
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time.sleep(6)
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# exercise the coolant plumbing: flush, valve, flush -- the pressure
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# inc/dec layers (LoopAtWill/Transient) are the suspect samples
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for _ in range(4):
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user32.keybd_event(VK_H, 0, 0, 0); time.sleep(0.5)
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user32.keybd_event(VK_H, 0, KEYUP, 0); time.sleep(0.6)
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user32.keybd_event(VK_C, 0, 0, 0); time.sleep(0.2)
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user32.keybd_event(VK_C, 0, KEYUP, 0); time.sleep(1.2)
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mark = len(open(log, errors="replace").read())
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print("[%s] idling 25s" % tag)
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time.sleep(25)
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finally:
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p.terminate()
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time.sleep(1)
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t = open(log, errors="replace").read()
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idle = t[mark:]
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playing = re.findall(r"^\[playing\].*$", idle, re.M)
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stuck = {}
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for l in playing:
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m = re.search(r"src=(\d+) (\S+).*loop=(\d+)", l)
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if m and m.group(3) == "1":
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stuck[m.group(2)] = stuck.get(m.group(2), 0) + 1
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return tag, stuck
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results = {}
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for legacy in (True, False):
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tag, stuck = run(legacy)
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results[tag] = stuck
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print("\n=============== A/B RESULT ===============")
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for tag in ("legacy", "fixed"):
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s = results.get(tag)
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if s is None:
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print("\n[%s] never reached the mission" % tag)
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continue
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coolant = {k: v for k, v in s.items() if "oolant" in k}
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print("\n[%s] still playing with loop=1 after all releases: %d distinct samples"
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% (tag, len(s)))
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for k, v in sorted(s.items(), key=lambda kv: -kv[1]):
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mark = " <-- COOLANT" if "oolant" in k else ""
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print(" %-30s seen %dx%s" % (k, v, mark))
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print(" coolant sources stuck: %d" % len(coolant))
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L = results.get("legacy") or {}
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F = results.get("fixed") or {}
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lc = len([k for k in L if "oolant" in k])
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fc = len([k for k in F if "oolant" in k])
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print("\nVERDICT: legacy coolant-stuck=%d fixed coolant-stuck=%d -> %s"
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% (lc, fc, "FIX CONFIRMED" if lc > fc else
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("no coolant stick reproduced in either arm" if lc == 0 else "NOT fixed")))
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sys.exit(0)
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@@ -0,0 +1,114 @@
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"""Gitea #51 -- audit which sounds the LoopAtWill reclassification actually changes.
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The old rule was `AL_LOOPING = (sample != ForceStatic)`, which made every one of the
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224 non-ForceStatic samples an OpenAL source that never ends. The new rule defers a
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LoopAtWill sample to the SOURCE's authored AudioRenderType (streamed from
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AUDIO*.RES), which is what the enum comment says it means.
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This run drives a normal solo session -- engine, walking, weapons, coolant flush --
|
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with BT_LOOP_AUDIT=1 and tabulates every sound by (sample flag, source type) so the
|
||||
reclassification is measured, not assumed. The load-bearing question:
|
||||
|
||||
* do the sustained loops (engine, wind) stay loop=1? <- must be YES
|
||||
* which sounds flip [WAS 1, NOW 0]? <- must all be one-shots
|
||||
|
||||
Kills only the PID it spawns.
|
||||
"""
|
||||
import ctypes
|
||||
import os
|
||||
import re
|
||||
import subprocess
|
||||
import sys
|
||||
import time
|
||||
from collections import Counter
|
||||
|
||||
KEYUP = 0x0002
|
||||
VK = {"W": 0x57, "H": 0x48, "C": 0x43, "SPACE": 0x20}
|
||||
user32 = ctypes.windll.user32
|
||||
|
||||
REPO = r"C:\git\bt411"
|
||||
LOG = os.path.join(REPO, "scratchpad_loopaudit.log")
|
||||
if os.path.exists(LOG):
|
||||
os.remove(LOG)
|
||||
|
||||
env = dict(os.environ)
|
||||
env.update({
|
||||
"BT_START_INSIDE": "1",
|
||||
"BT_KEY_NOFOCUS": "1",
|
||||
"BT_DEV_GAUGES": "1",
|
||||
"BT_LOOP_AUDIT": "1",
|
||||
"BT_AUTOFIRE": "1", # exercise weapon one-shots
|
||||
"BT_LOG": LOG,
|
||||
})
|
||||
proc = subprocess.Popen(
|
||||
[os.path.join(REPO, "build", "Release", "btl4.exe"), "-egg", "LAST.EGG"],
|
||||
cwd=os.path.join(REPO, "content"), env=env,
|
||||
stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
|
||||
print("pid", proc.pid)
|
||||
|
||||
|
||||
def hold(name, secs):
|
||||
vk = VK[name]
|
||||
user32.keybd_event(vk, 0, 0, 0)
|
||||
time.sleep(secs)
|
||||
user32.keybd_event(vk, 0, KEYUP, 0)
|
||||
time.sleep(0.3)
|
||||
|
||||
|
||||
try:
|
||||
deadline = time.time() + 240
|
||||
while time.time() < deadline:
|
||||
if os.path.exists(LOG) and "first frame" in open(LOG, errors="replace").read():
|
||||
break
|
||||
time.sleep(2)
|
||||
else:
|
||||
print("FAIL: never reached the mission")
|
||||
proc.terminate()
|
||||
sys.exit(2)
|
||||
time.sleep(6)
|
||||
|
||||
hold("W", 4.0) # throttle up -> engine + footfalls
|
||||
hold("H", 0.6) # coolant flush
|
||||
hold("C", 0.2) # valve
|
||||
hold("H", 0.6) # flush again
|
||||
time.sleep(8)
|
||||
finally:
|
||||
proc.terminate()
|
||||
time.sleep(1)
|
||||
|
||||
t = open(LOG, errors="replace").read() if os.path.exists(LOG) else ""
|
||||
lines = re.findall(r"^\[loop-audit\].*$", t, re.M)
|
||||
|
||||
combos = Counter()
|
||||
flipped = {}
|
||||
kept = {}
|
||||
for l in lines:
|
||||
m = re.search(r"file=(\S+) sample=(\S+) source=(\S+) -> loop=(\d)", l)
|
||||
if not m:
|
||||
continue
|
||||
f, samp, src, lp = m.groups()
|
||||
combos[(samp, src, lp)] += 1
|
||||
if "[WAS 1, NOW 0]" in l:
|
||||
flipped[f] = (samp, src)
|
||||
elif lp == "1":
|
||||
kept[f] = (samp, src)
|
||||
|
||||
print("\n=============== RESULT ===============")
|
||||
print("[loop-audit] events:", len(lines))
|
||||
print("\nclassification matrix (sample flag x source type -> loop):")
|
||||
for (samp, src, lp), n in sorted(combos.items(), key=lambda kv: -kv[1]):
|
||||
print(" %-12s x %-9s -> loop=%s (%d events)" % (samp, src, lp, n))
|
||||
|
||||
print("\nSTILL LOOPING (loop=1) -- these must be genuine sustained loops:", len(kept))
|
||||
for f, (samp, src) in sorted(kept.items()):
|
||||
print(" %-30s %s / %s" % (f, samp, src))
|
||||
|
||||
print("\nRECLASSIFIED to one-shot [WAS 1, NOW 0]:", len(flipped))
|
||||
for f, (samp, src) in sorted(flipped.items()):
|
||||
print(" %-30s %s / %s" % (f, samp, src))
|
||||
|
||||
engine_kept = [f for f in kept if "Engine" in f or "Wind" in f]
|
||||
print("\nsustained engine/wind loops preserved:", engine_kept if engine_kept else "NONE -- INVESTIGATE")
|
||||
print("\nVERDICT:", "measured -- review the two lists above" if lines
|
||||
else "no [loop-audit] output (gate not firing?)")
|
||||
sys.exit(0)
|
||||
Reference in New Issue
Block a user