BT411/scratchpad/loopaudit.py

"""Gitea #51 -- audit which sounds the LoopAtWill reclassification actually changes.

The old rule was `AL_LOOPING = (sample != ForceStatic)`, which made every one of the
224 non-ForceStatic samples an OpenAL source that never ends.  The new rule defers a
LoopAtWill sample to the SOURCE's authored AudioRenderType (streamed from
AUDIO*.RES), which is what the enum comment says it means.

This run drives a normal solo session -- engine, walking, weapons, coolant flush --
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)