Advanced Modular Interior Architecture:Walls, Stairs, Interactive Doors, Windows

ENGINE AND RENDERING
Tested editor: Unity 6000.6.7f1.
Main import: URP 17.6.0 materials and all 25 demo scenes.
Current URP package: 100 materials and 25 demo scenes, plus one older prototype scene outside Demo.
HDRP and Built-in support archives replace all 100 materials and 25 demo scenes, including the expanded Manor and Browser. Fresh customer imports, Windows x64 Mono / Direct3D11 builds and standalone interaction checks passed in all three pipelines.
HDRP support includes 43 packed masks and six configuration/profile assets. Optional URP demo settings contain four configuration assets. Project settings remain under the customer's control.
Import the main package, then only the matching HDRP or Built-in support archive if needed. Reapply that archive after main-package updates. Keep customized materials/scenes in project-owned copies.
Materials can be replaced through renderer slots using shaders for the active pipeline.

SOURCE PREFAB INVENTORY
63 door assemblies.
57 window/over-door transom assemblies: 18 moving window assemblies; remaining assemblies fixed.
63 wall configurations, including open surface modules and 13 solid fitted opening walls.
44 wainscoting configurations, 44 cornice configurations and 16 skirting shapes.
5 additional window casing/sill options.
5 interchangeable hardware styles: round, oval and faceted knobs; faceted and smooth levers.
1 additional ornate knob sample.
345 Asset Browser entries: 298 source configurations including hardware, seven complete short window walls and 40 complete stair assemblies.
Counts include fitted variants and shared geometry; these are not counts of unique models.

READY-TO-PLACE ASSEMBLIES
145 total: 105 doorway/window sections plus 40 complete stairs.
105 fitted wall sections: 69 doorways and 36 window sections across 20 families.
These are nested combinations under Prefabs/ReadyToPlace. The Asset Browser includes the seven new short ready sections and their standalone windows; all 105 complete sections remain available in their family folders.
Each structural section spans 2.08 m and is 2.60 m high. Narrow 1.04 m doorway families use 0.26 m wall depth; wide 1.30 m doorway and all ready-window families use 0.13 m.
Wall, frame and joinery are fitted at native scale. Optional cornice/skirting groups are included; wainscoting is separate.
Preserve root scale, fitted child transforms, moving pivots, colliders and nested LODGroups. Production mechanisms require integration with the project's input system.

STAIRS AND RECEIVING FLOORS
40 complete assemblies: 20 Open (Plain/Metal/Traditional/Manor), 15 Fitted (Plain/Traditional/Manor), five Enclosed (Plain). Each set has Straight, L Left/Right and U Left/Right layouts.
203 individual stair component prefabs. Ordinary fitted walls, corners, arches and level trims reuse existing kit parts.
Floor rise 2.86 m; flight width 1.30 m; riser 0.17875 m; going 0.26 m.
Fitted ceiling at 5.20 m gives 2.34 m above the upper landing. Enclosed ceiling at 5.46 m gives 2.60 m. Full assembly bounds include floor/roof/rail extents and are not placement increments.
Static walking collision is included on all 40 complete stairs. Receiving-floor joins and player dimensions must be checked in the customer's layout. Stair prefabs do not install a player or navigation system.
Twenty Traditional/Manor Open/Fitted assemblies have selective baluster LODs: 500/356/208 triangles per baluster at LOD0/1/2. Handrails, newels and structure stay unchanged. Plain/Metal have no separate reduction chain.
Stair_Assemblies.csv documents all 40 measured bounds and per-level geometry totals; Stair_Components.csv documents the source components. These are prefab configurations using shared meshes.

SOURCE GEOMETRY
Measured triangle totals per source-library prefab (excluding the composite ready-to-place sections), including ALL stored LOD tiers and inactive MeshFilters:
Walls: 2-448.
Doors: 3,132-6,140.
Windows/transoms/casings/sills: 88-11,750.
Hardware sets including the ornate sample: 496-4,984.
Wainscoting: 168-844.
Cornices: 36-256.
Skirting: 50-336.
These are serialized geometry totals, not simultaneously rendered triangle budgets. They exclude collider geometry and replacement hardware instantiated at runtime.
63 door, 52 window/casing/sill and six standalone hardware prefabs contain LODGroups. The remaining small/simple pieces do not have separate LOD chains. Asset Browser exposes available detail levels; door hardware LOD binding follows hardware swaps.

SHORT RECTANGULAR WINDOWS
Seven additional standalone designs and seven matching complete wall assemblies.
Opening widths: small 1.04 m; large 1.56 m. Both openings are 1.30 m high, with sill 1.04 m and head 2.34 m above the wall root.
Small: casement, fixed four-pane, fixed five-pane transom. Large: double casement, fixed four-pane, fixed five-pane transom, horizontal slider.
Both LOD tiers retain hardware motion; fixed panes remain fixed. Separate texture and lightmap UV channels. Existing taller families are preserved.

SCALE AND UVS
Metre-based scale. Standard wall height: 2.6m.
Straight wall widths: 0.26m, 0.52m, 1.04m, 2.08m, 4.16m and 6.24m.
Reusable UV0 layouts; tiling surfaces may extend beyond 0-1.
Typical wall/decorative trim repeat: 2.6m. Joinery repeat: 2m.
Shared hardware atlas layouts; repeated parts intentionally reuse texture regions.
Texture UVs and lightmap UVs are separate. Pipeline-specific demo lighting is supplied; this revision does not include a connected precomputed lightmap bake. New or changed layouts require their own lighting setup and optional bake.

TEXTURES AND MATERIALS
Striped, Emerald, Burgundy and Navy wallpaper; painted joinery/trim; metal, enamel and glass finishes.
Bonus oak-board and oak-herringbone floor materials and maps. The 100-material total includes 18 stair-connection floor instances referencing existing maps; no new texture set is implied.
105 square PNG textures: 29 at 1024 x 1024, 73 at 2048 x 2048 and 3 at 4096 x 4096. These are source image dimensions; Unity import settings determine runtime resolution. The separate 1920 x 1080 Welcome background is excluded from this texture-map count.
Base colour, normal and metallic/smoothness, with AO where supplied; map availability varies by finish.
Metallic red / smoothness alpha packing for URP and Built-in Standard. The optional HDRP masks use R metallic / G occlusion / B detail mask / A smoothness; their 43 images are additional to the 105 source textures above.
Directional patterns may require material-offset alignment at modular joins.
Dedicated Manor wainscoting atlases must stay paired with their matching meshes.

INTERACTION
C# transform-based door and window controllers; no Animator or imported Blender drivers required.
Door open/close/lock states, coordinated handle and spring-latch motion, and hardware selection.
Sliding and hinged window controllers with lock and sash controls.
Core controllers are input-framework independent. Demo scripts support the Input System and a conditional legacy-input path; the current project uses Input System 1.20.1.
Physics components are used on fitted interactive assemblies. Decorative trim is visual geometry; open wall modules require appropriate collision and backing for the layout.
Connect the API to your game's input and gameplay systems.

CUSTOM HARDWARE AUTHORING
Door Hardware Builder editor window: source setup, front/back fit, fixed/moving roles, spindle placement, rotation and door preview, named authoring profiles, hardware prefab and runtime-definition generation, and fitted door prefab copies.
Supports rigid hardware with a shared spindle. It does not generate UVs, simplify source geometry or infer mechanisms from an arbitrary model.
Runtime custom hardware swaps are supported while the door is idle.

DEMOS AND DOCUMENTATION
Welcome Hub, Hotel Manor, Asset Browser, Ready-to-Place Quick Start, the original assembly reference room and ready-section family review scenes.
Hotel Manor retains its original seven areas and adds three stair routes and upper rooms/corridors: 13 navigation destinations, five operable doors and two operable windows. Browser searches all 345 entries and instantiates one assembly at a time, with preview cutaways for Fitted/Enclosed stairs.
Dockable Start Here package guide with placement, materials/trims, interaction, custom hardware and support topics.
Hub and return navigation show asynchronous scene-data progress, a separate preparation stage and elapsed time. No remaining-time estimate is supplied.
HTML manual covering 20 doorway/window opening families, 40 complete stairs and 203 stair component prefabs, with per-page contents/navigation, text editions, illustrated Hardware Builder PDF and runtime API examples.
Window > Living Failure Games > Advanced Modular Interior Architecture contains Start Here, the Builder, Documentation, Prefab Thumbnails and scene shortcuts.
Optional Prefab Thumbnails editor tool: front/back Project grid previews, on-demand cache and no runtime dependency.
Support: [email protected].