First, create a folder in your project with name “AI”.
In any area inside of the folder, click with right mouse button, a menu will open, click in “Create”, after that, click in “AI Graph”.
A scriptable object will be created, that is will be your “Character Artificial Inteligence Core” basically. It is a scriptable object with only the logic, another script will execute that logic in the character on the scene.
After creating the “AI Graph”, a window will open, which is the “xNode Graph”, you can create nodes inside the Graph to control the AI logic.
To create a new node right mouse click inside the graph window, a list of nodes will appear, you can choose which one you want to add to the graph.
Importantly, the logic always begin with the “Start” node (After this topic you can find a AI logic explanation and more).
click and press the circle representing the output of the node, move the mouse to the input circle of the chosen node and release the mouse button, it is done.
In the scene, you must add in a character the script “AiStateController.cs”. This script are used to execute the “AI Graph” logic. You will need to set up that script, but for now it is important to add the “AI Graph” reference with, now the character have a AI.
After setup all the settings, your character is done.