Stylized City Pack

Summary:

563 unique 3D models:

• 60 buildings — avg. ~1,160 tris (range: 28–9,479) — vertex color (no UV mapping)
• 347 props — avg. ~207 tris (range: 5–3,855) — vertex color (no UV mapping)
• 46 vehicles — avg. ~542 tris (range: 245–822) — vertex color (no UV mapping)
• 110 character meshes (male & female, outfit variants, animated rigs) — avg. ~990 tris (range: 20–42,082) — single color-palette texture atlas per gender (with UV mapping)

Animations (characters): idle, idle rare, 2 × walking cycles, 2 × bench sitting, 2 × cafe sitting, bicycle riding — all bone-based

LODs: No

Rendering & Art Pipeline

• Unity URP (Universal Render Pipeline)
• Buildings, props, vehicles and environment meshes colored with vertex colors — no texture atlases, minimal draw calls
• Characters use a single color-palette texture atlas per gender
• Modular prefab assembly for fast city block construction
• All meshes optimized for real-time: low poly counts, efficient topology

Spline Tools (Edit Mode, real-time preview)

• SplineRoad — procedural road mesh along any Bezier curve; preserves inspector-assigned materials when editing nodes
• SplineFence — fence mesh tiled along a spline; supports multi-submesh sections, configurable spacing, scale and rotation per tile
• RoadMarking — dashed and solid road markings along a curve
• VegetationSpline — scatter vegetation along or inside a closed spline area with density and randomization controls
• SidewalkIsland — procedural sidewalk island with node editor; built-in presets: Circle, Octagon, Square 2×2 / 5×5, Rectangle 2×5 — all with rounded corners
• All spline objects follow parent transform moves; full Undo/Redo support

Traffic & Crowd System

• CarTrafficManager — spline-based multi-car traffic with arc-length uniform speed, automatic lane spacing and collision avoidance
• Cars stop for pedestrians and resume after configurable timeout
• CarAgent — single-car variant with lateral offset and loop/ping-pong modes
• Wander — NavMesh-based pedestrian system with crowd avoidance and stuck detection
• Bicyclists and gyroscooterists supported as traffic variants on the same spline system

No third-party dependencies — drop in and run

Architecture

• All runtime scripts: Assets/StylizedCityPack/Scripts/
• All editor scripts compiled under #if UNITY_EDITOR or in Editor/ subfolders — zero editor code in builds
• All code is in the StylizedCityPack namespace to avoid name collisions
• No third-party SDKs, no Assembly Definition files required

APIs Used

• UnityEngine.AI (NavMesh) — pedestrian Wander system
• UnityEditor.Undo, UnityEditor.Handles — spline node editing with full Undo/Redo
• Mesh API — procedural mesh generation for SplineRoad, SplineFence, RoadMarking, SidewalkIsland
• MeshRenderer.sharedMaterials — material slot management

Limitations

• NavMesh must be baked manually for the Wander pedestrian system
• SplineRoad, SplineFence, RoadMarking generate meshes in Edit Mode only; no runtime mesh regeneration
• VegetationSpline uses GameObject.Instantiate — large vegetation counts may affect performance
• Characters require an Animator Controller with is_moving (bool) parameter

Supported Unity Versions & Platforms

• Unity 2021.3 LTS and above
• Universal Render Pipeline (URP) required — Built-in RP and HDRP are not supported
• All platforms supported by Unity URP (PC, Mac, Linux, iOS, Android, consoles)