NavMesh Areas — blocking and cost-modifying regions for AI pathfinding

NavMesh Areas

NavMeshAreaDefinition Resource

Create a NavMeshAreaDefinition asset to define the area's properties (cost, color, name). There is a limit of 24 NavMeshAreaDefinition assets per project, but you can assign them to as many NavMeshArea components as needed.

NavMeshArea Component

Add a NavMeshArea component to a GameObject to define the location and shape of the area:

var go = Scene.CreateObject();
go.WorldPosition = dangerZoneCenter;

var area = go.Components.Create<NavMeshArea>();
area.IsBlocker = true;   // true = completely blocks NavMesh generation here

Blocker vs Cost Area

• IsBlocker = true — removes NavMesh from this region entirely. Agents cannot path through it.
• IsBlocker = false — keeps NavMesh but applies a cost multiplier from the NavMeshAreaDefinition. Agents will avoid it if a cheaper path exists.

Assigning to a NavMeshLink

Areas can also be assigned to NavMeshLink components to mark the traversal type (e.g. a jump link in a "Jump" area):

var link = go.Components.Create<NavMeshLink>();
link.Area = jumpAreaDefinition;

Performance

• Static areas are essentially free — baked into the NavMesh
• Moving areas (on moving GameObjects) have a small runtime cost; you can have dozens without issue