拍摄延迟（Unity和C＃）

Question

I am making shooting in Unity, what I want is to make a little delay, for example: to be able to shoot in every 0.5 seconds. Check the script, I want my bullet prefab to appear (instantiate) after 0.5 sec delay.

private Rigidbody2D rb2d;
private float h = 0.0f;
public float Speed;
public Transform firePoint;
public GameObject bulletPrefab;


    // Start is called before the first frame update
void Start()
{
    rb2d = GetComponent<Rigidbody2D>();

}

// Update is called once per frame
void Update()
{
    h = Input.GetAxisRaw("Horizontal");
    if (h != 0.0f)
    {
        rb2d.velocity = new Vector2(h * Speed, rb2d.velocity.y);
    }
    if (h == 0.0f)
    {
        rb2d.velocity = new Vector2(0, rb2d.velocity.y);

    }

    if (Input.GetKeyDown(KeyCode.Space))
    {
        Shoot();
    }
}


void Shoot()
{
    Instantiate(bulletPrefab, firePoint.position, firePoint.rotation);
}

Answer 1

This should take you in the right direction, of course, this is only one of the ways to do it.

You can change fireDelay to change the rate of fire.

private Rigidbody2D rb2d;
private float h = 0.0f;
public float Speed;
public Transform firePoint;
public GameObject bulletPrefab;

float fireElapsedTime = 0;
public float fireDelay = 0.2f;


    // Start is called before the first frame update
void Start()
{
    rb2d = GetComponent<Rigidbody2D>();

}

// Update is called once per frame
void Update()
{
    h = Input.GetAxisRaw("Horizontal");
    if (h != 0.0f)
    {
        rb2d.velocity = new Vector2(h * Speed, rb2d.velocity.y);
    }
    if (h == 0.0f)
    {
        rb2d.velocity = new Vector2(0, rb2d.velocity.y);

    }

    fireElapsedTime += Time.deltaTime;

    if (Input.GetKeyDown(KeyCode.Space) && fireElapsedTime >= fireDelay)
    {
        fireElapsedTime = 0;
        Shoot();
    }
}


void Shoot()
{
    Instantiate(bulletPrefab, firePoint.position, firePoint.rotation);
}