How to make shotgun spread in Unity 2D (without Raycasting)

Questions & Answers
1

I am making a game where the character just has to shoot enemies to move on, but I wanted to add variety to my game and add more guns, like a shotgun. Problem being no matter what I try, either it doesn’t hit the enemy, or the bullet spawn, but don’t move. I am very new to Unity, so a clear explanation, or example would be greatly appreciated

Here is the codes:

For my regular Pistol (which works):

[RequireComponent(typeof(AudioSource))]
public class Weapon : MonoBehaviour
{
public Transform firePoint;
public GameObject bulletPrefab;
public AudioClip firingSound;
public int ammo = 10;
public bool isFiring;

// Update is called once per frame
void Update()
{
    if (Input.GetButtonDown("Fire1") && ammo > 0)
    {
        Shoot();

    }

    if (Input.GetKey(KeyCode.R))
    {
        ammo = 10;
    }
}

public void Shoot()
{
    Instantiate(bulletPrefab, firePoint.position, firePoint.rotation);
    AudioSource.PlayClipAtPoint(firingSound, new Vector3(0, 0, 0));

    isFiring = true;
    ammo--;
    isFiring = false;
}

}
For my bullet:

public float speed = 10f;
public int damage = 34;
public Rigidbody2D rb;

// Start is called before the first frame update
void Start()
{
    rb.velocity = transform.right * speed;
}

void OnTriggerEnter2D(Collider2D hitInfo)
{
    EnemyHealth enemy = hitInfo.GetComponent<EnemyHealth>();

    if (enemy != null)
    {
        enemy.TakeDamage(damage);
    }

    Destroy(gameObject); 
}

void OnBecameInvisible()
{
    enabled = false;
    Destroy(gameObject);
}

For my shotgun, I though all I have to do is add 2 more firePoints, then angle them slightly, make the bullet Instantiate there, and boom, easy as that, but no, it has caused me 10 hours of searching for different methods:

public Transform firePoint, firePoint1, firePoint2;
public GameObject bulletPrefab;
public AudioClip firingSound;
public int ammo = 10;
public bool isFiring;

// Update is called once per frame
void Update()
{
    if (Input.GetButtonDown("Fire1") && ammo > 0)
    {
        Shoot();

    }

    if (Input.GetKey(KeyCode.R))
    {
        ammo = 10;
    }
}

public void Shoot()
{
    Instantiate(bulletPrefab, firePoint.position, firePoint.rotation);
    Instantiate(bulletPrefab, firePoint1.position, firePoint1.rotation);
    Instantiate(bulletPrefab, firePoint2.position, firePoint2.rotation);
    AudioSource.PlayClipAtPoint(firingSound, new Vector3(0, 0, 0));

    isFiring = true;
    ammo--;
    isFiring = false;
}

}

Oh and my code for the gun looking at my character if you need:

public float speed = 10f;
public GameObject player;

void Update()
{
    // Rotate the object around its local X axis at 1 degree per second
    transform.Rotate(Vector3.forward * speed * Time.deltaTime);

}

void LateUpdate()
{

    this.transform.position = new Vector3(player.transform.position.x, player.transform.position.y, 0);

    Vector2 dir = Input.mousePosition - Camera.main.WorldToScreenPoint(transform.position);
    float angle = Mathf.Atan2(dir.y, dir.x) * Mathf.Rad2Deg;
    transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
}

Thanks in advance

2

What I do is have a bullet with a rigidbody and collider and addForce(transform.forward) in the start() then if I want to do a shotgun shot I make like 5 bullets and rotate the other 4 slightly.

3

I havent read your code (Since you posted alot), so you might have tried this.

I would simply try running a for loop and instantiate however many bullets that you want. Then for each instantiation, making the rotation random (within your wanted limits) with Random.Range, and then adding a forward velocity or impulse force to the bullets rigidbodies should do the trick. If you dont want to use rigidbodies you could also attach a simple script to the bullet object, simply making the transform move in the transform.forward direction at a decired speed over time.

I hope this help you. It should be quite straight forward. If you need more help, feel free to ask :slight_smile: