Unreal Engine 4 tools

Unreal Engine 4 provides a complete suite of tools to add common AI capability to your game. We will go into the details of each tool within this book. Here is a list of the tools that are covered:

• Behavior Tree: This is used to create different states and the logic behind AI.
• Navigation Component: This handles movement for AI.
• Blackboard Asset: These are used to store information. They act as the local variable for AI.
• Enumeration: This is used to create states, which you can alternate between.
• Target Point: Our Waypoints class is derived from the Target Point class, which we will use to create a basic form of Path node.
• AI Controller and Character: This controller will handle communication between the world and controlled pawn for AI.
• Navigation Volumes: This is used to create Navigation Mesh in the environment to enable Path Finding for AI.

Let's look at the following screenshot:

There are two types of NavMesh volume. The first, the NavMesh Bounds volume, defines the area for NavMesh. The Nav Modifier volume, when supplied with a Nav Area class, affects the NavMesh Bounds volume's navigation attributes where the two intersect.