Why my NPCs shoot the player but not other GameObjects?

Hi folks! I’ve been studying Unity and C# for a while now, but I’m having a hard headache with this problem. It looks like a bug, but it can be a scripting error (AKA myfault).

Can anyone figure out why, using this script, my NPCs do shoot at the Player when I type “Player” on targetTag, but don’t shoot other NPCs? Even if I change the NPCs tag to Player, they won’t do it!

If I wanted them to shoot the player, the script would be just fine: the only shoot when they have a clear line of sight and on a random basis…

using UnityEngine;
using System.Collections;

public class FireRangedWeapon : MonoBehaviour {

[SerializeField] private string targetTag;
[SerializeField] private float power = 10.0f;
[SerializeField] private float weaponRange = 20f;
[SerializeField] private int minReloadTime;
[SerializeField] private int maxReloadTime;

private float reloadTime;
private GameObject target;

public GameObject projectile;

void Start ()

{
	StartCoroutine (Attack ());
}

IEnumerator Attack()
{
	FindClosest ();
	if ((Vector3.Distance (transform.position, target.transform.position) <= weaponRange) && !Physics.Linecast(transform.position,target.transform.position,1))
	{
		transform.LookAt (target.transform);
		GameObject newProjectile = Instantiate(projectile, transform.position + transform.forward, transform.rotation) as GameObject;
		newProjectile.GetComponent<Rigidbody>().AddForce(transform.forward * power, ForceMode.VelocityChange);
	}

	reloadTime = Random.Range (minReloadTime, maxReloadTime);
	yield return new WaitForSeconds (reloadTime);
	StartCoroutine (Attack ());
}
	
void FindClosest()
{
	GameObject[] gos;
	gos = GameObject.FindGameObjectsWithTag(targetTag);
	GameObject closest = null;
	float distance = Mathf.Infinity;
	Vector3 position = transform.position;
	foreach (GameObject go in gos) {
		Vector3 diff = go.transform.position - position;
		float curDistance = diff.sqrMagnitude;
		if (curDistance < distance) {
			closest = go;
			distance = curDistance;
		}
	}
	target = closest;
}

}

Even though no one answered my question, I found out by myself that it was a matter of Layers, because I was using a Linecast as part of one of the “if” statements. Since the gameObjects were on the same layer where the Linecast was looking for obstacles, they never shot each other…

So I just set the NPCs to another layer and that was the end of it!