How to do it...

To make an NPC seek or flee from a moving object, follow these steps:

1. In the Inspector window, add a Rigid Body Physics component to the Capsule-destination GameObject.
2. In the Inspector window for the Capsule-destination GameObject, check the Freeze Position constraint for Y-axis in the Constraints options of the RigidBody component. This will prevent the object from moving in the Y-axis due to collisions when being moved.
3. Create the SimplePlayerControl C# script class and add an instance object as a component to the Capsule-destination GameObject:

using UnityEngine;

 public class SimplePlayerControl : MonoBehaviour {
 public float speed = 1000;
 private Rigidbody rigidBody;
 private Vector3 newVelocity;

 private void Start() {
 rigidBody = GetComponent<Rigidbody>();
 }

 void Update() {
   float xMove = Input.GetAxis("Horizontal") * speed * Time.deltaTime;
   float zMove = Input.GetAxis("Vertical&quot...