GameObject.FindGameObjectWithTag isn't detecting cloned objects

Question

I have a script that moves instantiated game objects depending on their tag. However, the game objects that have been instantiated are not moving.

Instantiation Script:

void Update()

{
    tillNextSpawn += Time.deltaTime;
    Debug.Log(tillNextSpawn);

    if (tillNextSpawn >= 2)
    {
        UnityEngine.Debug.Log("Instantiating circle");
        screenPosition = Camera.main.ScreenToWorldPoint(new Vector3(Random.Range(0, Screen.width), Random.Range(0, Screen.height), Camera.main.farClipPlane / 2));
        Instantiate(circle, screenPosition, Quaternion.identity);
        tillNextSpawn = 0.0f;
    }
}

Enemy controller script(moves the enemies)

void FixedUpdate()
{
    /*GameObject[]*/
    var objects = GameObject.FindGameObjectsWithTag("Enemy");
    var objectCount = objects.Length;
    foreach (var obj in objects)
    {
        // Move the players accordingly
        var rb = obj.GetComponent<Rigidbody2D>();
        Debug.Log(rb);
        Vector2 direction = (player.position - obj.transform.position).normalized;
        rb.velocity = direction * moveSpeed;
    }


}

Kareem Kareem · Accepted Answer · 2020-06-19T17:21:48

If you want the enemy to follow the player, try doing the following:

//Attach this script to the enemy

Transform player;
private Rigidbody2D rb;
private Vector2 movement;
public float moveSpeed;

    void Awake()
{
    player = ScriptNameOnPlayer.instance.gameObject.transform;

}


// Start is called before the first frame update
void Start()
{
    rb = this.GetComponent<Rigidbody2D>();
}

void Update()
{

    Vector3 direction = player.position - transform.position;
    direction.Normalize();
    movement = direction;  
}

void FixedUpdate()
{
    moveCharacter(movement);
}

void moveCharacter(Vector2 direction)
{
    rb.MovePosition((Vector2)transform.position + (direction * moveSpeed * Time.deltaTime));
}


//But make sure your player script has this line of code:

public static ScriptNameOnPlayer instance;

Hope this helps !

GameObject.FindGameObjectWithTag isn't detecting cloned objects

2 Answers