BloodAndGore/Assets/Scripts/Utils/Util.cs

using UnityEngine;

namespace Saltosion.OneWeapon.Utils {
    public class Util {
        public static T GetClosestTo<T>(Transform Searcher, float radius, LayerMask layerMask, bool needsLineOfSight = false) where T : MonoBehaviour {
            Collider2D[] NearbyColliders = Physics2D.OverlapCircleAll(Searcher.position, radius);
            float LowestDistance = float.PositiveInfinity;
            T FoundTarget = null;
            foreach (Collider2D Collider in NearbyColliders) {
                if (Collider.gameObject == Searcher.gameObject) {
                    continue;
                }

                Vector2 Delta = (Collider.transform.position - Searcher.position);
                float Distance = Delta.magnitude;
                T TargetComponent = Collider.GetComponent<T>();
                RaycastHit2D[] Hits = Physics2D.RaycastAll(Searcher.position, Delta.normalized, Distance, layerMask);

                bool LineOfSightObstructed;
                if (needsLineOfSight) {
                    LineOfSightObstructed = false;
                    foreach (RaycastHit2D Hit in Hits) {
                        if (Hit.collider != Collider && Hit.transform != Searcher &&
                            (Hit.rigidbody == null || Hit.rigidbody.transform != Searcher)) {
                            // Hit something between the target and the searcher
                            LineOfSightObstructed = true;
                            break;
                        }
                    }
                } else {
                    LineOfSightObstructed = false;
                }

                if (TargetComponent != null && !LineOfSightObstructed && Distance < LowestDistance) {
                    LowestDistance = Distance;
                    FoundTarget = TargetComponent;
                }
            }
            return FoundTarget;
        }

        public static int RandomValueBetween(int min, int max) {
            int RollMax = max - min;
            return (int)(min + Mathf.Min(Mathf.Floor(Random.value * (RollMax + 1)), RollMax));
        }
    }
}