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Question by unity_EUaR3_TE3Dh7Mg · Aug 21, 2020 at 08:21 PM · 2d gameunity 2dvisual studiotop-down

AI script that follows player in a distance

I wrote a script that makes allies to follow the leader. Now I'm struggling to make the allies follow the leader not from all over the map but within a range. if someone can help me out or give me a hint it would be much appreciated! here's the code:

 public class AlliesFollowing : MonoBehaviour
 {
     public float speed;
 
     private Transform target;
 
 
     void Start()
     {
         target = GameObject.FindGameObjectWithTag("Player").GetComponent<Transform>();
     }
 
     void Update()
     {
         if (Vector2.Distance(transform.position, target.position) > 1 )
         {
             transform.position = Vector2.MoveTowards(transform.position, target.position, speed * Time.deltaTime);
         }
 
     }
 }

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Answer by wooolly · Aug 21, 2020 at 08:40 PM

You're already using a Vector Distance check to ensure they stop following when within 1 tile, so why not just do the same thing with a max distance? I used 30 tiles just as an example.

 float distance = Vector2.Distance(transform.position, target.position);
 if (distance > 1f && distance < 30f)
 {
       // Follow
 }

Preferably replace these hard-coded values (1, 30) with CONSTANT fields so that you can add a descriptive name and re-use them when necessary.

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