Washable Courtyard — Interactive Cleanable Prop Pack

Five detailed courtyard props with clean/dirty exports and actual per-instance localized cleaning in Unity URP.

Build a small restoration scene around a timber/graphite park bench, pale-timber picnic table, ivory mailbox/post, cast-stone planter and taupe resin storage chest. Brush away removable dirt locally without erasing permanent material character and wear. Shared source resources retain independent runtime dirt state for each instance.

INCLUDED

Five editable Blender sources, twenty static clean/dirty FBX/GLB exports, 25 original maps, five Unity prefabs, cleaning shader/code, a six-instance demonstration scene, setup notes and commercial license. Actual Unity runtime video is available on the companion Gumroad listing: https://stackassets.gumroad.com/l/ljexy .

Interactive localized cleaning is Unity URP functionality. FBX and GLB do not contain the cleaning runtime.

FEATURES

• Five unique courtyard designs; 104,940 triangles total.

• Clean/dirty authored surfaces and localized raycast brush cleaning.

• Per-instance masks; a same-prop second bench demonstrates isolation.

• Reset Selected and Reset All; original textures and permanent wear remain.

• Mailbox door / storage chest lid controls and finished accessible interiors.

• Blender source plus static FBX/GLB and native Unity delivery.

TECHNICAL / COMPATIBILITY

Bench: 31,568 triangles / 5 × 4096² maps. Picnic table: 34,900; mailbox/post: 15,628; planter: 3,034; chest: 19,810. Each of the latter four has 5 × 2048² maps. BaseColor/DirtyBaseColor, RoughnessMetallic (R roughness / G metallic), tangent Normal and AuthoredDirt. Each active Unity part owns a 1024² R8 mask; eight masks in the six-instance demo.

Blender 5.2.2 LTS; Unity 6000.3.24f1 / URP 17.3.0 / Windows x64 Direct3D 12. Input Manager or Both required. Legacy WC_01_ParkBench filenames map to WCT_01_ParkBench. Standard FBX requires companion R/G binding for full PBR; dirty GLB intentionally uses roughness 0.83.

LIMITATIONS

No water simulation, persistent cleaning saves or validated arbitrary/scaled mesh replacement. Ground-contact faces cannot be brushed. Other engines, render pipelines, versions, mobile and VR are untested. Fine pores and narrow borders soften at fixed 4K/2K atlas resolution; subtle wear is less visible at overview distance. Hinges are not certified engineering hardware.

LICENSE / PROVENANCE

Commercial project use and modification are permitted under the included UtilityStack Assets Commercial Asset License — 1.0. Perpetual, nonexclusive, royalty-free; unlimited personal/commercial projects, rendered/baked output and compiled game/application distribution with reasonable source-extraction protection. Employees/contractors may access source only for buyer projects. No standalone source resale, redistribution as stock/templates/asset packs, public/free source sharing, claiming authorship of originals, or model training/resale based on source without written permission. Mandatory consumer rights and applicable marketplace licenses remain protected. Third-party software has its own terms. License not attorney-reviewed.

Original AI-assisted designs, assets and cleaning code developed with OpenAI Codex in Blender/Unity and reviewed by the owner. No third-party reference images, vendor meshes, branding or commercial shader code are included.

INSTALLATION

Extract source/portable delivery for Blender 5.2.2 LTS and static FBX/GLB. For Unity use a compatible 3D URP project, import the supplied .unitypackage preserving .meta GUIDs, assign Assets/WashableCourtyard/Generated/WC_URP.asset in Graphics and active desktop Quality, use Linear Color Space and Input Manager (Old) or Both. Open Assets/WashableCourtyard/WC_Demo.unity. Hold left mouse to select/clean, right mouse to orbit, wheel to zoom. Full setup, required Unity modules, map packing and controls are in the included README.

Version 1.0.1. UtilityStack Assets · UtilityStack Labs

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