Raycast Bullet Spread

Unity Engine
1

Does anyone know how to create bullet spread with raycasting?

using UnityEngine;
using System.Collections;
using TMPro;

public class GunScript : MonoBehaviour
{
    public float reloadTime = 3f;
    public float damage = 10f;
    public float range = 100f;
    public float impactForce = 10000f;
    public float fireRate = 15f;
    public int maxAmmo = 100;
    public float bulletSpreadAmount = 1f;
    private int currentAmmo;
    public bool isReloading = false;


    public Camera fpsCam;
    public TextMeshProUGUI ammoTxt;
    public ParticleSystem muzzleFlash;
    public GameObject impactEffect;
    public WeaponSwitcher switchWeapon;
    public Animator animator;

    private float nextTimeToFire = 0f;

    void Start()
    {
        currentAmmo = maxAmmo;
    }

    void OnEnable()
    {
        isReloading = false;
        animator.SetBool("isReloading", false);
    }

    // Update is called once per frame
    void Update()
    {
        if (isReloading)
        {
            return;
        }

        if (switchWeapon.isSwitching)
        {
            return;
        }

        if (currentAmmo <= 0)
        {
            StartCoroutine(Reload());
            return;
        }

        ammoTxt.text = gameObject.GetComponent<GunScript>().currentAmmo.ToString();

        if (Input.GetButton("Fire1") && Time.time >= nextTimeToFire)
        {
            nextTimeToFire = Time.time + 1f / fireRate;
            Shoot();
        }
    }

    public void Shoot()
    {
        muzzleFlash.Play();

        currentAmmo--;

        RaycastHit hit;
        if (Physics.Raycast(fpsCam.transform.position, fpsCam.transform.forward, out hit, range))
        {

            Target target = hit.transform.GetComponent<Target>();
            if (target != null)
            {
                target.TakeDamage(damage);
            }

            Ragdoll target1 = hit.transform.GetComponent<Ragdoll>();
            if (target1 != null)
            {
                target1.TakeDamage(damage);
            }

            RagdollNotMoving target2 = hit.transform.GetComponent<RagdollNotMoving>();
            if (target2 != null)
            {
                target2.TakeDamage(damage);
            }

            if (hit.rigidbody != null)
            {
                hit.rigidbody.AddForceAtPosition(fpsCam.transform.forward * impactForce, hit.point);
            }

            GameObject impaceGO = Instantiate(impactEffect, hit.point, Quaternion.LookRotation(hit.normal));
            Destroy(impaceGO, 1f);
        }
    }

    IEnumerator Reload()
    {
        isReloading = true;
        Debug.Log("Reloading...");

        animator.SetBool("isReloading", true);

        yield return new WaitForSeconds(reloadTime - .25f);
        animator.SetBool("isReloading", false);
        yield return new WaitForSeconds(.25f);

        currentAmmo = maxAmmo;
        isReloading = false;
    }
}
2 
Vector3 fwd = fpsCam.transform.forward;
fwd = fwd + fpsCam.TransformDirection (new Vector3(Random.Range(-bulletSpreadAmount , bulletSpreadAmount ),Random.Range(-bulletSpreadAmount , bulletSpreadAmount )));
        if (Physics.Raycast (fpsCam.transform.position, fwd, out hit,range))
        {
            //etc
        }

btw i see that you post this question in general support, i guess you’d get more attention in the scripting forum…

3

It worked! Thank you for your help. And I didn’t even realize I was in general support, oops.

4

It worked for me aswell! Is there any way I can modify a crosshair to represent the spread, btw?

5

I forgot to reply, there’s a small mistake.
In the fwd = … line, fpsCam.TransformDirection is written, when it must be fpsCam.transform.TransformDirection.

6

i was confused at first but this helped thanks