Question How do I make my Enemy AI back up?

Hello! I am currently working on a small game and I am trying to make on of my AIs Back up if the player is too close, but I do not know how to go about it, I have this code so far...

Code (CSharp):

1. public class Range_AI : MonoBehaviour
2. {
3.  
4.     public NavMeshAgent agent;
5.  
6.     public Transform Player;
7.  
8.     public LayerMask whatisGround, whatisPlayer;
9.     //Patroling AI
10.     public Vector3 walkPoint;
11.     bool walkPointSet;
12.     public float walkPointRange;
13.  
14.  
15.     //A sad yet funny attempt to attack player
16.     public float TBA; //No, not *that* kind of TBA, TBA is short for "time between attack"
17.     bool Attacked;
18.     public GameObject projectile;
19.  
20.    // (States)
21.     public float sightRange;
22.     public float attackRange;
23.     public float BackUpRange;
24.     public bool PIS;
25.     public bool PIAR; //"Player in attack range"
26.     public bool PITC; //"Player is too close"
27.  
28.     private void Awake()
29.     {
30.         Player = GameObject.Find("Player").transform;
31.         agent = GetComponent<NavMeshAgent>();
32.      
33.     }
34.  
35.     private void Update()
36.     {
37.         PIS = Physics.CheckSphere(transform.position, sightRange, whatisPlayer);
38.         PIAR = Physics.CheckSphere(transform.position, attackRange, whatisPlayer);
39.         PITC = Physics.CheckSphere(transform.position, BackUpRange, whatisPlayer);
40.  
41.         if (!PIS && !PIAR && !PITC)
42.         {
43.             Patroling();
44.         }
45.  
46.         if (PIS && !PIAR && !PITC)
47.         {
48.             Chase();
49.         }
50.  
51.         if (PIS && PIAR && !PITC)
52.         {
53.            Attack();
54.         }
55.         if (PIS && PIAR && PITC)
56.         {
57.            BackUp();
58.         }
59.  
60.    
61.     }
62.      void Patroling()
63.     {
64.         if (!walkPointSet)
65.         {
66.             FindPoint();
67.         }
68.  
69.         if (walkPointSet)
70.         {
71.             agent.SetDestination(walkPoint);
72.         }
73.  
74.         Vector3 distanceToWalkPoint = transform.position - walkPoint;
75.  
76.         //Entity reached Walkpoint
77.         if(distanceToWalkPoint.magnitude < 1f)
78.         {
79.             walkPointSet = false;
80.         }
81.     }
82.  
83.     private void FindPoint()
84.     {
85.         float randomZ = Random.Range(-walkPointRange, walkPointRange);
86.         float randomX = Random.Range(-walkPointRange, walkPointRange);
87.  
88.         walkPoint = new Vector3(transform.position.x + randomX, transform.position.y, transform.position.z + randomZ);
89.  
90.         if (Physics.Raycast(walkPoint, -transform.up, 2f, whatisGround))
91.         {
92.             walkPointSet = true;
93.         }
94.     }
95.  
96.      private void Chase()
97.     {
98.         agent.SetDestination(Player.position);
99.     }
100.      private void Attack()
101.     {
102.         agent.SetDestination(transform.position);
103.  
104.         transform.LookAt(Player);
105.  
106.         if (!Attacked)
107.         {
108.             //Attack type: Range
109.          
110.             Attacked = true;
111.             Invoke(nameof(ResetAttack), TBA);
112.         }
113.     }
114.  
115.     private void BackUp()
116.     {
117.         transform.LookAt(Player);
118.        
119.     }
120.  
121.  
122.     private void ResetAttack()
123.     {
124.         Attacked = false;
125.     }
126.  
127. }

Any help will be much appreciated!!!

 

Backing up can be tricky. Unlike saying "go here" you have to say "go somewhere that is NOT here..."

Lots of ways to choose that "not here" location:

- just back away from the player (problem: you can back enemies into a corner retreating)

- calculate a vector away from the player (problem: it might be out of bounds or otherwise unreachable)

- calculate a random place further and further away (on the same side of the player) until you find somewhere to go (problem: enemies can make weird unlikely maneuvers)

I would try a few different ways, see what feels best given the tightness of your playfields, the speeds involved (player and enemy), etc.