Fast Distance Comparisons with sqrMagnitude

The Tip: Vector3.Distance() uses Mathf.Sqrt behind the scenes, which incurs computational cost when evaluated frequently.

How to Use: Perform distance checks using sqrMagnitude against the squared threshold distance.

using UnityEngine;

public class ProximityCheck : MonoBehaviour
{
    [SerializeField] private Transform target;
    [SerializeField] private float range = 10f;

    private void Update()
    {
        Vector3 offset = target.position - transform.position;
        if (offset.sqrMagnitude <= range * range)
        {
            // Target inside range without square root math
        }
    }
}