arcattackandClaude Opus 4.8
c2c4ab1f67
Document the cockpit-gauge attribute-pointer system in GAUGE_COMPOSITE.md (§Attribute wave) and CLAUDE.md §10: how a Subsystem/Attribute or bare-Attribute binding resolves (ParseAttribute -> FindSubsystem/GetName -> GetAttributePointer -> activeAttributeIndex), what a class must publish (AttributeID enum + AttributePointers[] + GetAttributeIndex chained + DefaultData wiring), the DENSE-TABLE HAZARD (Build leaves gap slots uninitialized, Find strcmps every slot -> tables must be a dense prefix), and the base-primitive vs BT-specific widget split. Records the 4 committed increments (HeatSink table, Mech table, vertBar, segmentArcRatio) and the follow-ups (oneOfSeveralPixInt/map/PlayerStatus/ vehicleSubSystems, the #if0'd HeatSink-bank AmbientTemperature, the Reservoir coolantCapacity shadow). Promote the two reverse-engineering helpers from the session scratchpad into tools/ (durable): disas2.py (capstone + PE parse -- recovers x87 float math Ghidra drops; FUN_004dcd94=round, FUN_004dcd00=fabs) and vtdump.py (dump a class vtable to find an override the assert-anchored decomp never exported, e.g. SegmentArcRatio::Execute). Doc references updated scratchpad/ -> tools/. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
import struct, sys
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from capstone import *
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PATH = r"C:\git\bt411\content\BTL4OPT.EXE"
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data = open(PATH, "rb").read()
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e_lfanew = struct.unpack_from("<I", data, 0x3C)[0]
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coff = e_lfanew + 4
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num_sec = struct.unpack_from("<H", data, coff+2)[0]
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opt_size = struct.unpack_from("<H", data, coff+16)[0]
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opt = coff + 20
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image_base = struct.unpack_from("<I", data, opt+28)[0]
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sec_tbl = opt + opt_size
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secs = []
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for i in range(num_sec):
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off = sec_tbl + i*40
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vsize, va, rawsize, rawptr = struct.unpack_from("<IIII", data, off+8)
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secs.append((va, vsize, rawptr, rawsize))
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def va_to_off(va):
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rva = va - image_base
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for sva, vsize, rawptr, rawsize in secs:
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if sva <= rva < sva + max(vsize, rawsize):
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return rawptr + (rva - sva)
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return None
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def read_va(va, n):
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o = va_to_off(va)
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return data[o:o+n] if o is not None else None
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def fconst(va):
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b = read_va(va, 4)
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return struct.unpack("<f", b)[0] if b else None
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FN = int(sys.argv[1], 16)
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LEN = int(sys.argv[2], 16) if len(sys.argv) > 2 else 0x140
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code = read_va(FN, LEN)
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md = Cs(CS_ARCH_X86, CS_MODE_32); md.detail = True
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known = {"0x408328":"SinCos","0x4dcd94":"Round(ftol ST0)","0x40954c":"Quat->Euler",
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"0x4700bc":"NumericDisplay::ctor","0x4700ac":"nameCopy","0x442aec":"bitMapBin.Get",
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"0x442c12":"bitMapBin.Release","0x444818":"GraphicGauge::ctor","0x474855":"GaugeConnDirectOf::ctor",
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"0x4c2ff8":"tiledBlit","0x402298":"operator new","0x4dcdec":"Round64"}
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print(f"=== disasm @0x{FN:x} len=0x{LEN:x} ===")
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for ins in md.disasm(code, FN):
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line = f"0x{ins.address:x}: {ins.mnemonic:<7} {ins.op_str}"
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for tok in ins.op_str.replace("[", " ").replace("]", " ").split():
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if tok.startswith("0x"):
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try:
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a = int(tok, 16)
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if 0x4b0000 <= a <= 0x520000:
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fv = fconst(a)
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if fv is not None:
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line += f" ; [0x{a:x}]={fv:g}f"
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except ValueError:
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pass
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if ins.mnemonic == "call" and ins.op_str in known:
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line += f" ; {known[ins.op_str]}"
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print(line)
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if ins.mnemonic == "ret":
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break
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