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Implement base SYS4 asset store

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gamer147
2026-07-11 09:14:14 -04:00
parent 2232216832
commit 8e0f769a6e
19 changed files with 614 additions and 114 deletions
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docs/phase-a-slice-plan.md
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@@ -1055,7 +1055,7 @@ separate slices. No implementation commit was made.
This is an optional high-leverage detour before movie `0x236` or SFX. It replaces the Phase-A
pre-extracted/pre-converted asset bootstrap with the native loose-override/archive-fallback model and removes
the runtime dependency on `extracted/` plus `build/textures/`. Canonical format/architecture detail and source
references live in `docs/asset-resolution-re.md` §“Candidate runtime asset-VFS track”; this section defines
references live in `docs/asset-resolution-re.md` §“Runtime asset-VFS track”; this section defines
slice boundaries only.
Land it as three bounded slices, not one archive/codec rewrite:
@@ -1090,6 +1090,21 @@ fixtures and installed-game integration checks rather than committing proprietar
modding contract and benefits scripts, UI chrome, SFX, and movies. It is not required to continue opcode
coverage immediately, so choosing movie/SFX next remains valid.
### VFS-A — base SYS4 catalog + ALF byte reads DONE (2026-07-11)
`Sys4AssetCatalog` now runtime-parses `SYS4INI.BIN` into all 13208 raw slots (including two `@`
placeholders), 13206 real/name records, bounded scene sections, and universal raw-id lookup.
`Sys4AssetStore` applies native `loose exact-basename -> ALF offset/size` precedence with traversal rejection,
per-open file handles, and a seek/read boundary. `Sys4ScriptProvider` and all CLI/Godot root-script paths use
store bytes; `ResourceMap` consumes the live catalog instead of generated asset JSON.
Validation: 116 engine tests; every field against `build/asset-index.json`; all 136 generated scene views;
all 13206 archive ranges; representative bytes across DATA1..5 against `extracted/`; synthetic precedence,
range, traversal, and concurrency tests; CLI SC0000 run; Godot build/selftest. The installed root has 49
archive-backed script overrides and two root-only BIN engine files, not the historically reported 52
shadowing scripts; all 49 were byte-proven to win and differ from their archive payload. VFS-B APPEND01/AAI,
VFS-C AGF, audio migration, and movie `0x236` remain separate.
### Phase A — native SC0000 SFX family (`0xb4`/`0xb5`/`0xb6`/`0xc2`/`0xd9`) DONE (2026-07-11)
Native RE and the matching trace resolve the bounded family. `0xb4(resource,channel)` synchronously loads