Representing the world with points of visibility

This is another widely-used technique for world representation based on points located throughout the valid area of navigation, whether manually placed or automated via scripting. We'll be using manually-placed points connected automatically via scripting.

Getting ready

Just like the previous representation, it's important to have several things in order before continuing:

• Having the Edge class prepended to the Graph class in the same file

• Defining the GetEdges function in the Graph class

• Having the Vertex class

Note

The vertex objects in the scene must have a collider component attached to them, as well as the Vertex tag assigned. It's recommended for them to be unitary Sphere primitives.

How to do it...

We'll be creating the graph representation class as well as a custom Vertex class:

1. Create the VertexVisibility class deriving from Vertex:

   using UnityEngine;
   using System.Collections.Generic;
   
   public class VertexVisibility : Vertex
   {
       void Awake...