Is it possible to define restricted area in unity navMesh?

Hi to all
In my current project i use unity navmesh for generating walkable area on my terrain and my npc's use NavMeshAgent for pathfinding and navigating in game,and it works good.I want know is it possible to mark some areas of my terrain as unwalkable (e.g. lakes or deep rivers)?
I use an empty game object with a spherecollider component surrond restricted area but npc's still pass that area.
I will be grateful for any help.

 

Absolutely, you should have under the Navigation > Object tab a Navigation Layer drop down.

Simply select the meshes you wish to make "unwalkable", select Unwalkwable on the drop down and rebake.

I presume maybe you want to use empty game objects, but that won't do much since navmeshes depend on meshes or colliders to build on. Best bet is create temporary planes to define the unwalkable areas, and then disable them once the nav mesh is baked.

 

thanks for reply
I will try your solution soon.

 

Thanks again .i test your solution and it's result was great and acceptable.

 

Is it possible for part of Unity terrain?

 

Careful not to allow your players or other objects which are rigidbodies to cut holes in your navmesh, it eats up lots of resources. If an object can be changed each frame, Unity will update it each frame for the navmesh update.

 

It's still in beta, but you can now use NavMeshModifierVolume from Unity's GitHub project NavMeshComponents to mark sections of a terrain as not walkable. To do this:

• Install the components from https://github.com/Unity-Technologies/NavMeshComponents
  
  
• Add a NavMeshModifierVolume to your scene and set the area type to Not Walkable
  
  
• Add a NavMeshSurface to your scene (defaults all scene objects to walkable)
  
  
• Bake via the NavMeshSurface, NOT Unity's built-in Navigation panel