Navmesh Info

This page is work in progress. Putting here the dos and don'ts of working with vanilla navmeshes(exterior in particular). Based on my experience.

Do's

• You can move vanilla vertices, triangles, and edges around.
• You can create new triangles via edge splitting, but most be done on a vanilla triangle.
• You can create new triangles from existing vanilla vertices.
  • You need to select two vanilla vertices and while holding control, place down another vert and hit the A key to from the new triangle.
• You can delete most vanilla triangles.. too many will result in an error. Best to try not deleting any.
• You can move the entire navmesh from the cell way up in the sky or down below and disable it, and make your own navmesh from scratch.

Don'ts

• You cannot link a custom triangle to a vanilla triangle. The adjacent triangles will have their FormIDs changed and the vanilla navmesh will be silently deleted.
• You generally should not be deleting triangles. Deleting vertices could result in deleting many triangles.
• If you NEED to delete triangles, makes sure you do it carefully and not to create an "island" of navmeshes. The CK will change their FormIDs.

More info added as I learn more things.