Help adjusting my code

Questions & Answers
1

I have the following code in order to make my turret face the nearest target and I cant get it to work. Any suggestions?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Linq;

public class Turret : MonoBehaviour
{
GameObject enemies;
GameObject player;
GameObject closestEnemy;
private Vector3 target;
int count = 0;

private void Update()
{
    InvokeRepeating("FindNearestEnemy", 0f, 0.5f);
    target = closestEnemy.transform.position;
}

GameObject FindNearestEnemy()
{
    float minDistance = Mathf.Infinity;

    enemies = GameObject.FindGameObjectsWithTag("Enemy");
    foreach (GameObject enemyItem in enemies)
    {
        float dist = Vector3.Distance(player.transform.position, enemyItem.transform.position);

        if (count == 0)
        {
            minDistance = dist;
            closestEnemy = enemyItem;
            count++;
        }
        else
        {
            if (dist < minDistance)
            {
                minDistance = dist;
                closestEnemy = enemyItem;

            }
        }
    }
    return closestEnemy;

}

}

2

Don’t call InvokeRepeating in Update - you’ll end up queuing an infinite number of method calls and crash your game very quickly.
If tou only want to retarget every half second:

void Start(){
  InvokeRepeating("FindNearestEnemy", 0f, 0.5f);
}
3

Also after find the nearest target, dont forget to setup the facing of the player/turret to him.