Living World NPC System

Living World NPC System;

Drop ambient life into any Unity scene. Add one component, or run the wizard, and NPCs start roaming, following routes, visiting points of interest, working at jobs, and holding the right tool. Works with a baked NavMesh or with direct Transform movement, so it fits a village interior and an empty test scene equally well.

No third-party assets. No extra packages to import. Built-in, URP, and HDRP are supported. Requires Unity 6000.0 or newer.

What NPCs can do;

- Roam Radius / Roam Area: wander inside a sphere volume or a sphere or box area you draw in the scene

- Patrol: follow a waypoint path (loop, ping-pong, once, or random)

- Seek Point: walk to a point of interest and perform its activity (chop, farm, fish, mine, or your own)

- Idle: stand still, or use it as one step in a longer day

- Routines: chain behaviours into a day. Work for two minutes, stroll the square, rest on a bench, repeat

- Schedules: tie routine steps to a shared in-game clock. Miners head out at 08:00, villagers go home at 22:00, with optional per-agent jitter so crowds do not change jobs in unison

Setup in minutes, not a week;

- Setup Wizard: movement, behaviour, character, animations, layout, review. Create in Scene builds the NPCs, their destination (area, path or points), agents, and animator wiring, and can add a pooled spawner

- Make Selection Wander: apply agent, props, hand sockets, and an Animator Controller to existing characters in one undo step

- Save configured NPCs as reusable Prefabs

- Leave the prefab empty to get placeholder capsules and see the system immediately

- If NavMesh is selected but nothing is baked, the wizard falls back to Transform movement so NPCs still walk

Animations and held equipment;

- Generate or update an Animator Controller with Idle, Walk (IsMoving), optional Speed, and job states

- Activity structures: Single Loop (bool), Begin / Loop / Stop (trigger, bool, trigger), or custom names

- Activity Definition assets hold parameter names in one place, so points, animators, and prop binders stay in sync (for example MineBegin / IsMining / MineStop everywhere)

- Prop Binder shows and hides tools (pickaxe, axe, fishing pole) when the matching activity is active

- Hand sockets auto-detected: B-handProp.R/L, then B-hand.R/L, with Mixamo bone names as fallback

- Avatar setup for Humanoid rigs

Crowds that stay cheap;

- One shared update driver, not one Update per NPC

- Destination decisions are budgeted across frames, so large crowds do not spike a single frame

- Pooled Wander Spawner with weighted prefab mix; fill and clear with no allocations after the first pass

- Shared Profiles tune speed, radius, and timing for a whole population from one asset

For designers and programmers;

- Scene gizmos and custom inspectors. Scene Overview checks for missing animator parameters, missing areas and paths, and typed names no Animator uses

- C# events and UnityEvents on agents and points

- Replace point selection (IWanderPointSource) or animation driving (IWanderAnimationDriver) without forking the package

Includes;

Seven demo scenes (including a day-schedule showcase), placeholder characters and tools, starter point categories, example profiles, routines, and activity definitions. Demo content is built from Unity primitives only, with no third-party art.