First commit

Packages/com.jovian.utilities/Runtime/GameObjectUtilities.cs

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+using System;
+using UnityEngine;
+using Object = UnityEngine.Object;
+
+namespace Jovian.Utilities {
+    public static class GameObjectUtilities {
+        public static void DestroyGameObjectsOfType<T>() where T : MonoBehaviour {
+            var objects = Object.FindObjectsByType<T>(FindObjectsInactive.Include, FindObjectsSortMode.None);
+            foreach(var t in objects) {
+                Object.Destroy(t.gameObject);
+            }
+        }
+
+        public static bool IsGameObjectAChildOfGameObject(this GameObject targetGameObject, GameObject potentialParentGameObject) {
+            if(!targetGameObject) {
+                return false;
+            }
+
+            var potentialParentTransform = potentialParentGameObject.transform;
+            var checkTransform = targetGameObject.transform;
+            do {
+                if(checkTransform == potentialParentTransform) {
+                    return true;
+                }
+
+                checkTransform = checkTransform.parent;
+            } while(checkTransform);
+
+            return false;
+        }
+
+        public static bool TryFindChildByName(this GameObject gameObject,
+            string name,
+            out GameObject childGameObject,
+            bool includeInactive = false,
+            bool allowPartialMatch = false,
+            StringComparison stringComparison = StringComparison.Ordinal) {
+            childGameObject = null;
+            if(!gameObject) {
+                return false;
+            }
+
+            var children = gameObject.GetComponentsInChildren<Transform>(includeInactive);
+            foreach(var child in children) {
+                if(allowPartialMatch && child.name.Contains(name, stringComparison)) {
+                    childGameObject = child.gameObject;
+                    return true;
+                }
+
+                if(!allowPartialMatch && child.name.Equals(name, stringComparison)) {
+                    childGameObject = child.gameObject;
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    }
+}