6fc082ca55
The correlation route is gated on marked-fighter kills, which the pilot manages at about two per five minutes. ob_read.py already reads the counter off the screen, so ob_by_hud.py matches the displayed value against memory directly and needs no kills at all: screenshot, read the digits, keep heap words equal to that value, intersect across readings. Four readings at value 4 narrowed 6156 candidates to 4312, the expected slow drift. Then the HUD read 11 and the intersection collapsed to zero. A word holding this counter must equal 4 at the first four samples and 11 at the last, and none does, so within the entity heap read as big-endian u32 the counter does not exist. It may be u16, u8, little-endian, or outside that region. Both previous hunts assumed big-endian u32 there, so this eliminates the assumption rather than merely failing to find anything. The displayed value also went up, from 4 to 11 over about 340 seconds. A pure countdown of remaining marked targets should not rise, and the deployment work says phase 1 gains no new participants. Three readings are possible and none is tested: the cell being read is not REMAINING OB, the digits are misread, or the counter genuinely counts something that can increase. The two clean readings scored 0.95 to 0.98 against their templates, but 4 and 11 use only digits that are in the strip, which is exactly the selection effect that would hide a wrong reading -- the template set covers 0 1 2 4 8 only, and most samples came back unreadable. Next is widening the scan to u16 and u8 and to little-endian, and beyond the entity heap, which is a change to one function and costs no combat. Extending ob_digits.png with the missing digits would also raise the sample yield, since only two of eleven readings in a 480 s run were usable.
72 lines
2.6 KiB
Python
Executable File
72 lines
2.6 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Locate REMAINING OB from the HUD value instead of from kill events.
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The correlation route works but needs marked-fighter kills, and the pilot gets
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about two per five minutes (remaining-ob-hunt.md). The HUD already shows the
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number, and ob_read.py already reads it, so match the displayed value against
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memory directly -- no kills required.
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Each reading intersects: keep heap words equal to the value the HUD shows at
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that moment. A second reading at a DIFFERENT value collapses the set hard; even
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repeated readings at the same value help, since unrelated words drift.
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"""
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import os, sys, time, subprocess, collections
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sys.path.insert(0, __file__.rsplit('/', 1)[0])
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import gmem, gworld
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import numpy as np
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import ob_read
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LO, HI = 0xBD000000, 0xBE000000
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SHOT = '/tmp/ob_hud.png'
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def region(fd):
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lo, hi = gmem.va_to_off(LO), gmem.va_to_off(HI)
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out, pos = bytearray(), lo
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while pos < hi:
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n = min(1 << 24, hi - pos); out += os.pread(fd, n, pos); pos += n
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return np.frombuffer(bytes(out), dtype='>u4'), lo
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def hud_value():
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subprocess.run(['screenshot', SHOT], capture_output=True, timeout=60)
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try:
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txt, scores = ob_read.read(SHOT)
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except Exception as e:
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return None, str(e)
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t = (txt or '').strip()
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if not t.isdigit(): return None, 'unreadable %r' % txt
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return int(t), 'scores %s' % (scores,) # ob_read returns tuples, not floats
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def main():
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secs = int(sys.argv[1]) if len(sys.argv) > 1 else 240
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every = int(sys.argv[2]) if len(sys.argv) > 2 else 25
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w = gworld.World(); fd = w.fd
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cand = None; base = None; seen = []
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t0 = time.time()
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while time.time() - t0 < secs:
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v, note = hud_value()
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el = round(time.time() - t0)
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if v is None:
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print(' t=%4ds HUD unreadable (%s)' % (el, note), flush=True)
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else:
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r, base = region(fd)
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hit = set(np.nonzero(r == v)[0].tolist())
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cand = hit if cand is None else (cand & hit)
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seen.append(v)
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print(' t=%4ds HUD=%-4d words==%d: %-8d -> candidates %d (%s)'
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% (el, v, v, len(hit), len(cand), note), flush=True)
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if len(cand) <= 40 and len(set(seen)) >= 2:
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break
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time.sleep(every)
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print('\nHUD values seen: %s' % sorted(set(seen)))
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if cand and base is not None:
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print('candidates: %d' % len(cand))
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for i in sorted(cand)[:20]:
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va = gmem.primary_va(base + i * 4)
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print(' va %s' % (('%#010x' % va) if va else '?'))
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else:
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print('no candidates (HUD never read, or value never matched a u32)')
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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