Unity 2018 Cookbook - Third Edition

How to do it...

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

1. In the Inspector, add a Rigid Body Physics component to GameObject Capsule-destination.
2. In the Inspector, for the Capsule-destination GameObject, check the Freeze Position constraint for the Y axis in the Constraints options of the RigidBody component. This will prevent the object 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>(); ...