I'm doing a top-down shooter in unity, I'm trying to make the enemy shoot when it sees the player. So far, this is my code:

public class EnemyShooting : MonoBehaviour
{
    public Transform firePoint;
    public GameObject bulletPrefab;
    public float bulletForce = 20f;
    public FieldOfView _fieldofview;
   
        void Start()
    {
        _fieldofview = FindObjectOfType<FieldOfView>();
    }

    // Update is called once per frame
    void Update()
    {
       if(_fieldofview.canSeePlayer)
       {
           Shoot();
       }
    }

    void Shoot()
    {
        GameObject bullet = Instantiate(bulletPrefab, firePoint.position, firePoint.rotation);
        Rigidbody2D rb2d = bullet.GetComponent<Rigidbody2D>();

        rb2d.AddForce(firePoint.up * bulletForce, ForceMode2D.Impulse);
    }
}

However, when the player is detected it just spams the bullets due it doesn't has a cool down timer. I've tried with a Coroutine and the Invoke method but it doesn't works. Any ideas?

CodePudding user response：

The following code defines two times. The current cooldown and shoot cooldown. Add the bottom and your problem will be solved.

public float shootCooldown = 5; // 5sec for e.g.
private float currentCooldown;

void Update()
{
    if (currentCooldown > 0) // If shoot not in cooldown
    {
        currentCooldown = shootCooldown; // Set current cooldown time to shootCooldown
        if(_fieldofview.canSeePlayer) Shoot();
    }
    else currentCooldown -= Time.deltaTime; // Reduce cooldown over time
}