Unity 2017 Game AI Programming - Third Edition - Third Edition

Setting up the player tank and aspect

Our Target object is a simple sphere game object with the mesh render removed, so that we end up with only the Sphere Collider.

Look at the following code in the Target.cs file:

using UnityEngine;public class Target : MonoBehaviour{    public Transform targetMarker;        void Start (){}    void Update ()    {        int button = 0;        //Get the point of the hit position when the mouse is being clicked        if(Input.GetMouseButtonDown(button))         {            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);            RaycastHit hitInfo;            if (Physics.Raycast(ray.origin, ray.direction, out hitInfo))             {                Vector3 targetPosition = hitInfo.point;                targetMarker.position = targetPosition;            }        }    }}

You'll notice we left in an empty Start method in the code. ...