How do you make enemies rotate to your position in 2d

Question

Hi I am trying to make it so enemies move toward the player in 2d. I already made them able to move but I do not know how to make it so they turn around to face me. Heres what I have so far: private GameObject Player; public Transform target; public float speed = 3f;

     void Start() 
     {
         Player = GameObject.Find("Player"); // target
     }
  
      void Update()
      {     
 //move towards player
         if (Vector3.Distance(transform.position, target.position) > 1f) 
         { 
             transform.position = Vector2.MoveTowards(transform.position, Player.transform.position,   speed * Time.deltaTime); 
         }
      }

Answer 1

Best Answer

Answer by sean244 · Jan 20 at 01:14 AM

alt text

I don't understand why you need a GameObject called 'Player', if you already have a Transform called 'target'. They both reference the same thing. If you need to reference the player object, you can do so via the target variable. For example, if you wanted to destroy the player object, you can just call Destroy(target.gameObject); But anyways, here's the full script:

 using UnityEngine;
  
 public class Enemy : MonoBehaviour
 {
  
 public Transform target;
 public float speed = 3f;
  
 private void Update()
 {
     if (Vector3.Distance(transform.position, target.position) > 1f)
     {
         MoveTowards(target.position);
         RotateTowards(target.position);
     }
 }
  
 private void MoveTowards(Vector2 target)
 {
     transform.position = Vector2.MoveTowards(transform.position, target, speed * Time.deltaTime);
 }
  
 private void RotateTowards(Vector2 target)
 {
     var offset = 90f;
     Vector2 direction = target - (Vector2)transform.position;
     direction.Normalize();
     float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;       
     transform.rotation = Quaternion.Euler(Vector3.forward * (angle + offset));
 }
 }

enemyrotation.gif (315.5 kB)

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goldenbergdaniel8 · Jan 20 at 01:27 AM 0

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Good point. I dunno why I referenced the player twice. But thanks so much for the answer!

sean244 goldenbergdaniel8 · Jan 20 at 01:34 AM 0

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Your welcome. Keep in mind that at the very beginning, the enemy will instantly snap to the right rotation. If you don't like this, you can have it more smoothly rotate towards it instead. Just create a float called 'rotationSpeed' and replace

 transform.rotation = Quaternion.Euler(Vector3.forward * (angle + offset));

with these two lines

 Quaternion rotation = Quaternion.AngleAxis(angle + offset, Vector3.forward);
 transform.rotation = Quaternion.Slerp(transform.rotation, rotation, rotationSpeed * Time.deltaTime);

Also, be sure to check out my YouTube channel if you need any references :) https://www.youtube.com/channel/UCo_3OKEZQiRLQihycbkYd_Q

Answer 2

Answer by tormentoarmagedoom · Jan 20 at 12:46 AM

Good day.

Did you tried transform.LookAt() ?

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goldenbergdaniel8 · Jan 20 at 01:25 AM 0

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Yeah so I just tried adding transform.LookAt(target) to my script and the weirdest thing happens: all of my enemies disappear and fall off the map. Must be a glitch with unity

How do you make enemies rotate to your position in 2d

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