Problems with simple AI script

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Hi there I'm planning to put AI into my game so after some research I got something similar to what I want but it's still very buggy. The AI seems to only want to face the target's ass, so when I do a 180 turn with my player the AI spins around the player at the same distance. It's hard to explain without running it yourself but here it is.

 using UnityEngine;
 using System.Collections;
 
 public class AIScript : MonoBehaviour 
 {
     public GameObject target;
     public float moveSpeed = 20;
     public float rotationSpeed =5;
     private float distance;
     private float finalmove;
     private float finalrot;
 
     void Start()
     {
         finalmove = Random.Range(1, moveSpeed);
         finalrot = Random.Range(1, rotationSpeed);
         target = GameObject.FindGameObjectWithTag("Player");
     }
 
     void Update () 
     {
         distance = Vector3.Distance(target.transform.position, transform.position);
         transform.rotation = Quaternion.Slerp(transform.rotation,
         Quaternion.LookRotation(target.transform.position - transform.position), finalrot * Time.deltaTime);
         if (distance > 1)
         {
             transform.position += transform.forward * finalmove * Time.deltaTime;
         }
     }
 }

Any help would be appreciated, even if it involves writing a new script

Thanks in advance

Answer 1

Best Answer

Answer by Exalia · Sep 17, 2013 at 11:37 AM

Thanks for all the help everyone I eventually fixed it by using the script :

 gameObject.transform.LookAt(target.transform.position);
         transform.position += transform.forward * moveSpeed * Time.deltaTime;

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robhuhn · Sep 17, 2013 at 11:51 AM 1

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You could tweek the move speed and rotation speed values

If you're not slerping the rotation anymore, then that is exactly what I said :) So removing the slerp is just like an infinity speed value.

Good that it's working now.

Answer 2

Answer by robhuhn · Sep 16, 2013 at 10:49 AM

The AI can only turn while going forward (like a car) and can't turn on the spot?

Not sure if I get you right but slerping the rotation with a given rotation/move speed ratio could result in a large turn radius, then it will never reach the target in some cases.

You could tweek the move speed and rotation speed values or set the rotation and position independently.

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Exalia · Sep 16, 2013 at 10:54 AM 0

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Sorry I don't understand a lot of this, First I'm not sure if you're answering or asking a question. Secondly you mention that it is possible to result in a large turn radius, could you explain this a bit more? :)

I'm not sure if I'm tired or missing something but

I have a player I have an enemy

I want to slowly reduce the distance between the player and the target I want to make the enemy rotate and look at the player

That's all

robhuhn · Sep 16, 2013 at 11:18 AM 0

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I asked a question and gave a possible solution ;)

Did you try changing the move speed while the enemy gets closer?

 //distance replaces move speed in this case
 transform.position += transform.forward * distance * Time.deltaTime;

Exalia · Sep 17, 2013 at 09:16 AM 0

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I like the change of speed that occurs but it doesn't stop the AI not wanting to be looked at, If I turn my character all the AI spin round and look at it's ass constantly, and If I walk too close to them they spin round to the back.

Exalia · Sep 17, 2013 at 09:23 AM 0

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None of the suggestions work I'll repost the script I am using.

AI will get to a certain distance and then flash or spin round my Player GameObject :(

     void Update () 
     {
         distance = Vector3.Distance(target.transform.position, transform.position);
         transform.rotation = Quaternion.LookRotation(target.transform.position - transform.position);
         transform.position += transform.forward * moveSpeed * Time.deltaTime;
     }

robhuhn · Sep 17, 2013 at 09:38 AM 0

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I tested the script with my solutions and it works fine. $$anonymous$$ay be you have another scene set-up.

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Answer 3

Answer by ibrahim091234 · Sep 22, 2021 at 06:50 PM

man this is so amazing we dont even need a nav mesh agent cool man

i support this

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Problems with simple AI script

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