d0c8c54d96
Dry-run of scenario 1 (retail-v1-broken-offsets.log preserved as audit trail) surfaced three issues with the v1 cdb script: 1. STACK-ARG OFFSETS WRONG: BP actions used arbitrary registers (@edx, @edi) to read function args, but __thiscall puts non-this args on the stack ([esp+N] after the return address). All 12 BP5 "adjust_sphere" hits printed Nx=0.0 Ny=0.0 ... — fields not read. Fixed by writing a type dumper (a6-types-dump.cdb + runner) that uses cdb's `dt` command against the loaded PDB to get authoritative struct offsets. v2 probe script (to be written next) will use double-indirect reads (dwo(poi(@esp+N)+offset)) with correct offsets from the dump. 2. TEE-OBJECT UTF-16 ENCODING: PowerShell's default Tee-Object writes UTF-16 LE with BOM, making logs unparseable by grep without conversion. Runner now uses Out-File -Encoding ASCII. Sacrifices live console echo; use `Get-Content -Tail 50 -Wait` in a separate shell if live monitoring is needed. 3. BP6 SYMBOL NOT FOUND: `acclient!CTransition::validate_walkable` doesn't exist in the PDB. Decomp at line 272811 has `CTransition::check_walkable` — likely the actual name. To be verified + fixed in v2. The BP hit-count distribution from v1 is still meaningful diagnostic data (14,318 transitional_insert + 16,558 find_collisions + 40 set_contact_plane + 12 adjust_sphere + 1 step_up + 1 set_collide in a 2-second walk through the inn doorway). Preserved as a baseline sanity-check the v2 distribution can be diffed against. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
50 lines
1.2 KiB
Text
50 lines
1.2 KiB
Text
$$
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$$ Phase A6.P1 type dumper — authoritative struct offsets from PDB
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$$
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$$ Dumps the layouts of the 6 retail types A6's probe BPs need to read:
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$$ - CPolygon (BP5 — adjust_sphere_to_plane)
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$$ - CSphere (BP5)
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$$ - Plane (BP5, BP7)
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$$ - SPHEREPATH (BP2, BP3, BP5, BP6)
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$$ - CTransition (BP1, BP2, BP6)
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$$ - COLLISIONINFO (BP7)
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$$ - Position (containing struct in several of the above)
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$$ - OBJECTINFO (BP2 — walkable_z)
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$$
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$$ No breakpoints. Just dt + qd. Run once before authoring v2 probe.
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$$ Usage: .\tools\cdb\a6-types-dump-runner.ps1
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$$
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.sympath C:\Users\erikn\source\repos\acdream\refs
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.symopt+ 0x40
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.reload /f acclient.exe
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.printf "\n===== Type dump for A6.P1 cdb script offset derivation =====\n\n"
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.printf "=== Plane ===\n"
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dt -v acclient!Plane
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.printf "\n=== CSphere ===\n"
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dt -v acclient!CSphere
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.printf "\n=== Position ===\n"
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dt -v acclient!Position
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.printf "\n=== CPolygon ===\n"
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dt -v acclient!CPolygon
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.printf "\n=== SPHEREPATH ===\n"
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dt -v acclient!SPHEREPATH
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.printf "\n=== CTransition ===\n"
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dt -v acclient!CTransition
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.printf "\n=== COLLISIONINFO ===\n"
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dt -v acclient!COLLISIONINFO
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.printf "\n=== OBJECTINFO ===\n"
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dt -v acclient!OBJECTINFO
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.printf "\n===== Done =====\n"
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qd
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