Here we introduce four high level components for the navigation system:

• NavMeshSurface – for building and enabling a navmesh surface for one agent type.
• NavMeshModifier – affects the navmesh generation of navmesh area types, based on the transform hierarchy.
• NavMeshModifierVolume – affects the navmesh generation of navmesh area types, based on volume.
• NavMeshLink – connects same or different navmesh surfaces for one agent type.

These components comprise the high level controls for building and using NavMeshes at runtime as well as edit time.

High Level Components:
https://docs.google.com/document/d/1usMrwMHTPNBFyT1hZRt-nQZzRDTciIQRVzmA7MQsFNw

Low Level API:
https://docs.google.com/document/d/1g1KE59K7HQq25kAMxweRt5ePXkEMvgNnAU3zfX_R7m8

Download the feature build which is based on Unity 5.5

http://beta.unity3d.com/download/98b817aefff4/public_download.html

Clone or download this repository and open the project using the feature build. Alternatively, you can copy the contents of Assets/ to an existing project.

Note: the Unity build above is an experimental feature build, features and API is subject to change

Q: Can I bake navmesh at runtime?
A: yes

Q: Can I use navmesh'es for more than one agent size?
A: yes

Q: Can I put a navmesh in a prefab?
A: yes - with some limitiations.

Q: How do i connect two navmesh surfaces?
A: Use the NavMeshLink to connect the two sides

Q: How do i query the navmesh for one specific size of agent?
A: Use the NavMeshQuery filter when querying the navmesh

Q: What's the deal with the 'DefaultExecutionOrder' attribute?
A: It gives a way of controlling the order of execution of scripts - specifically it allows us to build a navmesh before the (native) navmeshagent component is enabled.

Q: What's the use of the new delegate 'NavMesh.onPreUpdate'?
A: It allows you to hook in to controlling the navmesh data and links set up before the navigation update loop is called on the native side.

Q: Can I do moving NavMesh platforms?
A: No - new API is required for consistently moving platforms carrying agents.

Q: Is OffMeshLink now obsolete?
A: No - you can still use OffMeshLink - however you'll find that NavMeshLink is more flexible and have less overhead.

Q: What happened to HeightMesh and Auto Generated OffMeshLinks?
A: They're not supported in the new navmesh building feature. HeightMesh will be added at some point. Auto OffMeshLink generation will possibly be replaced with a solution that allows better control of placement.