openDecal/NewNativeStubs/SpellFilter/NOTES.md
erik d1442e3747 Initial commit: Complete open-source Decal rebuild
All 5 phases of the open-source Decal rebuild:

Phase 1: 14 decompiled .NET projects (Interop.*, Adapter, FileService, DecalUtil)
Phase 2: 10 native DLLs rewritten as C# COM servers with matching GUIDs
  - DecalDat, DHS, SpellFilter, DecalInput, DecalNet, DecalFilters
  - Decal.Core, DecalControls, DecalRender, D3DService
Phase 3: C++ shims for Inject.DLL (D3D9 hooking) and LauncherHook.DLL
Phase 4: DenAgent WinForms tray application
Phase 5: WiX installer and build script

25 C# projects building with 0 errors.
Native C++ projects require VS 2022 + Windows SDK (x86).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-08 18:27:56 +01:00

1.4 KiB

SpellFilter.DLL

Origin

Entirely new — no corresponding code in the old source tree. A dedicated module for filtering and managing spell-related game data.

Binary Facts

  • Size: 185 KB
  • Type: COM in-process server (DLL)
  • Standard 4 COM exports: DllCanUnloadNow, DllGetClassObject, DllRegisterServer, DllUnregisterServer

What It Does

Provides spell filtering functionality for Asheron's Call — likely parsing spell tables from the DAT files, categorizing spells, and letting plugins query/filter spells by school, level, name, or other criteria.

Reconstruction Notes

  • LOOK AT: Managed/Decal.Interop.SpellFilter/ for the COM interface definitions this DLL must implement. That directory contains 20 decompiled C# files — the most of any interop assembly, suggesting a rich API surface.

  • There is no old source to reference. This must be reimplemented from:

    1. The COM interfaces defined in the interop assembly
    2. Understanding of AC's spell data structures (from the DAT file format)
    3. Possibly referencing Native/DecalDat/ for how spell data was already being parsed from DAT files
    4. Possibly referencing Native/DecalFilters/ for the general filtering pattern used by Decal
  • The 20 interop files suggest this module exposes multiple interfaces for spell tables, individual spells, spell schools, filtering criteria, etc.