Object not pointing at cursor

Unity Engine
, , ,
1

Ive been trying to make it so that the players arm points a gun towards where the mouse is (basically just 2D aiming) but for some reason the angles are always consistent. For example it would line up with the mouse while facing up and down but when facing forward it would be completely off.

using UnityEngine;
using static UnityEditor.Experimental.GraphView.GraphView;

public class PlayerAim : MonoBehaviour
{
    public GameObject arm, gun, shootPoint;

    public GameObject bullet;

    float orientation;

    PlayerController player;

    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        player = GetComponent<PlayerController>();
        orientation = transform.localScale.x;
    }

    // Update is called once per frame
    void Update()
    {
        Aim();
    }

    void Aim()
    {
        Vector3 aimDir = (Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position).normalized;
        float angle = Mathf.Atan2(aimDir.y, aimDir.x) * Mathf.Rad2Deg;

        if (player.horiz == 0)
        {
            if (Camera.main.ScreenToWorldPoint(Input.mousePosition).x < transform.position.x)
            {
                player.facingLeft = true;
                transform.localScale = new Vector3(-orientation, transform.localScale.y, transform.localScale.z);
            }

            else
            {
                player.facingLeft = false;
                transform.localScale = new Vector3(orientation, transform.localScale.y, transform.localScale.z);
            }
        }

        if (player.facingLeft)
        {
            arm.transform.rotation = Quaternion.Euler(0, 0, angle + 190);
        }

        else
        {
            arm.transform.rotation = Quaternion.Euler(0, 0, angle - 10);
        }

        if (Input.GetMouseButtonDown(0))
        {
            Shoot();
        }
        
    }

    void Shoot()
    {
        gun.GetComponent<Animator>().SetTrigger("Shoot");

        Instantiate(bullet, shootPoint.transform.position, Quaternion.Euler(0, 0, shootPoint.transform.rotation.eulerAngles.z));
    }
}
2

Try not adding or subtracting an extra 10 degrees on lines 49 and 54.

3

ahh sorry for not explaining before, I added those offsets to try and fix the misalignment issue but it of course didnt work since the misalignment changes based on the angle, so while it fixes in one area, other areas then break.

4

But still, instead of countering the misalignment by adding 10 degrees to the angle you should be adding something to the center point from which you calculate the angle. Although in this case it may not be necessary and instead you can replace transform.position on line 29 with arm.transform.position. So basically you want the angle to be calculated from the pivot point of the arm.

5

Wow I feel dumb, changing it to arm.transform.position fixed it, thank you so much!