more abilities and fixes

Assets/Scripts/Entities/DetectEntities.cs

@@ -0,0 +1,42 @@
+using System;
+using UnityEngine;
+
+public class DetectEntities : MonoBehaviour
+{
+	[SerializeField] private Entity thisEntity;
+	private void OnTriggerEnter2D(Collider2D other)
+	{
+		if (!other.CompareTag(thisEntity.tag) && other.TryGetComponent(out Entity isEntity))
+		{
+			thisEntity.entitiesInRange.Add(isEntity);
+			thisEntity.closestEntity = FindClosestEntity();
+		}
+	}
+
+	private void OnTriggerExit2D(Collider2D other)
+	{
+		if (other.TryGetComponent(out Entity isEntity) && thisEntity.entitiesInRange.Contains(isEntity))
+		{
+			thisEntity.entitiesInRange.Remove(isEntity);
+			if (thisEntity.closestEntity == isEntity)
+			{
+				thisEntity.closestEntity = FindClosestEntity();
+			}
+		}
+	}
+
+	private Entity FindClosestEntity()
+	{
+		Entity currentClosestEntity = null;
+		foreach (Entity entityFound in thisEntity.entitiesInRange)
+		{
+			if (!currentClosestEntity ||
+			    Vector3.Distance(entityFound.transform.position, thisEntity.transform.position) <
+			    Vector3.Distance(currentClosestEntity.transform.position, thisEntity.transform.position))
+			{
+				currentClosestEntity = entityFound;
+			}
+		}
+		return currentClosestEntity;
+	}
+}