P0-P-172: Part 51: Terrain Textures, Ai pathfinding

I have added the new ai pathfinding code to the project. This took longer than I thought, since I needed to essentially include two ai navigation solutions: one (the Unity Navmesh) for when the ai’s destination is within a navmesh, and another for when the ai is outside the navmesh.

It is not possible to create dynamic navmeshes yet. For this reason, I will eventually need to replace the Unity navmesh with some kind of dynamic navigation system, possibly A*.

I have also figured out that it is possible to add a distinct texture to each chunk of the SEE terrain. This may mean that adding multiple terrain textures won’t be as difficult as I thought.