Rotate indicator arrow away from mouse drag

Questions & Answers
1

I have a small arrow sprite that I would like to rotate towards where the player shoots (in a top down hockey game). The player shoots in the opposite direction of mouse drag. The current indicator I have seems to point in arbitrary directions. Here is my script:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class indicatorScript : MonoBehaviour
{
[SerializeField] GameObject puck;
puckShoot puckScript;

[SerializeField] GameObject player;
playerscript playerScript;

[SerializeField] Transform goal;

//Vector2 dir;
Vector2 startPoint;
Vector2 currentPoint;

void Start()
{
    puckScript = puck.GetComponent<puckShoot>();
    playerScript = player.GetComponent<playerscript>();
}

private void OnMouseDown()
{
    if (playerScript.hasPuck && playerScript.mouseDrag)
    {
        startPoint = Camera.main.ScreenToWorldPoint(Input.mousePosition);
    }
}

private void Update()
{
    if (playerScript.mouseDrag && playerScript.hasPuck)
    {
        currentPoint = Camera.main.ScreenToWorldPoint(Input.mousePosition);
        var dir = startPoint - currentPoint;

        var angle = Mathf.Atan2(dir.x, dir.y) * Mathf.Rad2Deg;

        transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
    }
}

}

I can attach the shooting script as well if that would be helpful. Thank y’all so much!

2

I find it easiest to use Quaternion.LookRoation. Then you don’t need to use any trig. Unity - Scripting API: Quaternion.LookRotation

transform.rotation = Quaternion.LookRotation(Vector3.forward,dir);