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Classify nonzero stock building header family

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This commit is contained in:
Jan Petykiewicz 2026-04-19 15:09:09 -07:00
commit c9026bd1a0
4 changed files with 89 additions and 8 deletions
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65
crates/rrt-runtime/src/building.rs
View file

@ -92,6 +92,15 @@ pub struct BuildingTypeRecoveredTableSummary {
pub present_style_station_entries: Vec<String>,
pub present_standalone_entries: Vec<String>,
pub bare_port_warehouse_files: Vec<String>,
pub nonzero_bty_header_dword_summaries: Vec<BuildingTypeBtyHeaderDwordSummary>,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct BuildingTypeBtyHeaderDwordSummary {
pub dword_0xbb: u32,
pub dword_0xbb_hex: String,
pub file_count: usize,
pub sample_file_names: Vec<String>,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
@ -437,6 +446,33 @@ fn summarize_recovered_table_families(
bare_port_warehouse_files.sort();
bare_port_warehouse_files.dedup();
let mut nonzero_bty_header_dword_groups = BTreeMap::<u32, Vec<String>>::new();
for file in files {
let Some(probe) = &file.bty_header_probe else {
continue;
};
if probe.dword_0xbb == 0 {
continue;
}
nonzero_bty_header_dword_groups
.entry(probe.dword_0xbb)
.or_default()
.push(file.file_name.clone());
}
let nonzero_bty_header_dword_summaries = nonzero_bty_header_dword_groups
.into_iter()
.map(|(dword_0xbb, mut file_names)| {
file_names.sort();
file_names.dedup();
BuildingTypeBtyHeaderDwordSummary {
dword_0xbb,
dword_0xbb_hex: format!("0x{dword_0xbb:08x}"),
file_count: file_names.len(),
sample_file_names: file_names.into_iter().take(24).collect(),
}
})
.collect();
BuildingTypeRecoveredTableSummary {
recovered_style_themes: RECOVERED_STYLE_THEMES
.into_iter()
@ -449,6 +485,7 @@ fn summarize_recovered_table_families(
present_style_station_entries,
present_standalone_entries,
bare_port_warehouse_files,
nonzero_bty_header_dword_summaries,
}
}
@ -549,7 +586,24 @@ mod tests {
source_kind: BuildingTypeSourceKind::Bty,
byte_len: None,
bca_selector_probe: None,
bty_header_probe: None,
bty_header_probe: Some(BuildingTypeBtyHeaderProbe {
type_id: 0x03ec,
type_id_hex: "0x000003ec".to_string(),
name_0x04: "Port".to_string(),
name_0x22: "Port".to_string(),
name_0x40: "Port".to_string(),
name_0x5e: "TextileMill".to_string(),
name_0x7c: "Port".to_string(),
name_0x9a: "Port".to_string(),
byte_0xb8: 0x06,
byte_0xb8_hex: "0x06".to_string(),
byte_0xb9: 0x06,
byte_0xb9_hex: "0x06".to_string(),
byte_0xba: 0x30,
byte_0xba_hex: "0x30".to_string(),
dword_0xbb: 0x01f4,
dword_0xbb_hex: "0x000001f4".to_string(),
}),
},
BuildingTypeSourceFile {
file_name: "Warehouse.bca".to_string(),
@ -577,5 +631,14 @@ mod tests {
summary.bare_port_warehouse_files,
vec!["Port.bty".to_string(), "Warehouse.bca".to_string()]
);
assert_eq!(summary.nonzero_bty_header_dword_summaries.len(), 1);
assert_eq!(
summary.nonzero_bty_header_dword_summaries[0].dword_0xbb_hex,
"0x000001f4"
);
assert_eq!(
summary.nonzero_bty_header_dword_summaries[0].sample_file_names,
vec!["Port.bty".to_string()]
);
}
}

6
docs/control-loop-atlas/map-and-scenario-content-load.md
View file

@ -84,6 +84,12 @@
`Maintenance Facility` and `Service Tower` with zero `dword_0xbb`. So the later numbered
`Port%02d` / `Warehouse%02d` clone seam is now bounded above the bare `Port` / `Warehouse`
family itself rather than under a hidden station-style alias family in `BuildingTypes`.
The wider nonzero stock family is explicit now too: the recovered report shows only one nonzero
`.bty` header lane, `dword_0xbb = 0x000001f4`, and it spans exactly `22` files including
`Port.bty`, `Warehouse.bty`, and a smaller industrial/commercial subset such as `Brewery`,
`ConcretePlant`, `ConstructionFirm`, `Hospital`, `Museum`, `PaperMill`, and `Steel Mill`. So
the later numbered clone seam is now bounded above that narrower `0x000001f4` stock family
rather than above the full style/source strip.
The fixed
tail is explicit now too: `0x00444dd0` writes one direct dword from
`[world+0x19]`, one zeroed `0x1f4`-byte slab under `0x32cf`, closes the package, derives the

14
docs/control-loop-atlas/runtime-roots-camera-and-support-families.md
View file

@ -1314,10 +1314,16 @@
`name_0x7c = VictorianStations` and `dword_0xbb = 0x00000000`. The standalone
`Maintenance.bty` / `ServiceTower.bty` rows also stay in that stock family, but their display
names are `Maintenance Facility` and `Service Tower` and their `dword_0xbb` lane remains zero.
So the numbered `Port%02d` / `Warehouse%02d` seam is no longer plausibly a hidden station-style
alias family under the stock assets; the remaining open question is why the later clone chooser
favors the bare `Port` / `Warehouse` family over those zero-valued station and maintenance /
service rows.
The nonzero stock family above that seam is explicit now too: the recovered report exposes only
one nonzero `.bty` header lane, `dword_0xbb = 0x000001f4`, spanning exactly `22` files
(`Brewery`, `ConcretePlant`, `ConstructionFirm`, `DairyProcessor`, `Distillery`,
`ElectronicsPlant`, `Furnace`, `FurnitureFactory`, `Hospital`, `Lumbermill`, `MachineShop`,
`MeatPackingPlant`, `Museum`, `PaperMill`, `PharmaceuticalPlant`, `Port`, `Recycling Plant`,
`Steel Mill`, `Textile Mill`, `Tire Factory`, `Tool and Die`, and `Warehouse`). So the
numbered `Port%02d` / `Warehouse%02d` seam is no longer plausibly a hidden station-style alias
family under the stock assets; the remaining open question is why the later clone chooser favors
this narrower `0x000001f4` stock family over the zero-valued station and maintenance / service
rows.
The direct `+0xba/+0xbb` writer census now rules out a broad false lead too. The obvious new
stores at `0x004ecd42/0x004ecdaa` and `0x004ed5d5/0x004ed625` are only shell-side
portrait/string refresh helpers over a different id-keyed collection rooted through

12
docs/rehost-queue.md
View file

@ -850,11 +850,17 @@ Working rule:
as `VictorianStationSml/Med/Lrg.bty` stay on the same `0x000003ec` family but keep
`name_0x7c = VictorianStations` and `dword_0xbb = 0x00000000`. The standalone
`Maintenance.bty` / `ServiceTower.bty` rows also stay in the same stock family, but expose
display names `Maintenance Facility` and `Service Tower` with zero `dword_0xbb`. So the
display names `Maintenance Facility` and `Service Tower` with zero `dword_0xbb`. The stock
nonzero family is explicit now too: only one recovered `.bty` header lane is nonzero,
`dword_0xbb = 0x000001f4`, and it spans exactly `22` files:
`Brewery`, `ConcretePlant`, `ConstructionFirm`, `DairyProcessor`, `Distillery`,
`ElectronicsPlant`, `Furnace`, `FurnitureFactory`, `Hospital`, `Lumbermill`, `MachineShop`,
`MeatPackingPlant`, `Museum`, `PaperMill`, `PharmaceuticalPlant`, `Port`, `Recycling Plant`,
`Steel Mill`, `Textile Mill`, `Tire Factory`, `Tool and Die`, and `Warehouse`. So the
remaining Tier-2 source question is no longer whether the numbered `Port%02d` /
`Warehouse%02d` banks are hidden station-style aliases; it is why the later clone path prefers
the bare `Port` / `Warehouse` family over the zero-valued station and maintenance/service
families when it seeds those numbered banks.
this narrower `0x000001f4` stock family over the zero-valued station and
maintenance/service families when it seeds those numbered banks.
The direct `+0xba/+0xbb` writer census is narrower now too. The obvious newly surfaced stores
at `0x004ecd42/0x004ecdaa` and `0x004ed5d5/0x004ed625` are only shell-side portrait/string
refresh helpers: they walk a separate id-keyed collection through `0x0053f830`, free and