Let’s say we need an array of things for our game. Things could be items, or characters, etc.. …

A singleton is a special class that can only have one instance. Because of this, it’s super-easy to reference functions inside a singleton from another class. Singletons can talk to other singletons, and non-singleton classes can talk to singletons, but singletons can not talk to non-singleton classes. Here’s an example were we use singletons to send debug messages, change a text box, and instantiate a prefab:

Let’s add a new waypoint to our map and have our ai jump to it like this: On the Object section of the Navigation tab we need to activate Navigation Static and Generate OffMeshLinks:

Ok, let’s build a Finite State Machine that will act as our smart AI. As our AI travels the waypoints, we want it to go into attack mode at each point. For now we’ll just have it stop for 3 seconds and then move on to the next waypoint. Like this: All we need is an If statement in our Attack Switch Case that calls a coroutine and updates the switch:

Let’s take our previous example a step further… Suppose we want to change the color of our ai to match the change in speed when we press the space bar, like this: Since we’ve already set up our custom class, we can easily add a material to our enum:

Let’s have some fun with enums using a custom class. We’ll make 3 speeds for our ai and cycle through the speeds every time we press the space bar, like this: First, we create our new custom class, AISpeed: using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.AI; [System.Serializable] public class AISpeed {…

Let’s add an Agent to our Navmesh and have it loop through a series of waypoints like this: For our Agent, let’s add a sphere to the scene, and add a Nav Mesh Agent component to the sphere. For our waypoints, let’s add some cubes with Box Collider components. Next…

If we want to build an AI agent that can travel around a scene autonomously, we need a way to set the area and boundaries. We do this in Unity using a Navmesh: Turn on the Navigation tab using the menu Windows — AI:

Let’s write a simple script that will move an object to a clicked location like this: Here’s the script that gets added to the player object: using System.Collections; using System.Collections.Generic; using UnityEngine; public class ClickToMove : MonoBehaviour { // Variable to store the speed at which the object should move…