modify

Runtime/Extension/UnityEngage.GameObject/ComponentExtensions.cs

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+using UnityEngine.Assertions;
+
+namespace UnityEngine
+{
+    /// <summary>
+    /// <see cref="UnityEngine.Component"/>.
+    /// </summary>
+    public static class ComponentExtensions
+    {
+        /// <summary>
+        /// 从目标组件中获取一个组件，如果是组件类型不存在，则添加
+        /// </summary>
+        public static Component GetOrAddComponent(
+            this Component obj, System.Type type)
+        {
+            var component = obj.GetComponent(type);
+            if (component == null)
+            {
+                component = obj.gameObject.AddComponent(type);
+            }
+
+            return component;
+        }
+
+        /// <summary>
+        /// 从目标组件中获取一个组件，如果是组件类型不存在，则添加
+        /// </summary>
+        public static T GetOrAddComponent<T>(
+            this Component obj) where T : Component
+        {
+            var component = obj.GetComponent<T>();
+            if (component == null)
+            {
+                component = obj.gameObject.AddComponent<T>();
+            }
+
+            return component;
+        }
+
+        /// <summary>
+        /// 从目标组件中获取一个组件，如果是组件类型不存在，则添加
+        /// 标记不保存
+        /// </summary>
+        public static T GetOrAddComponentDontSave<T>(
+            this Component obj) where T : Component
+        {
+            var component = obj.GetComponent<T>();
+            if (component == null)
+            {
+                component = obj.gameObject.AddComponent<T>();
+                component.hideFlags = HideFlags.DontSave;
+            }
+
+            return component;
+        }
+
+        /// <summary>
+        /// 检查目标组件的GameObject上是否有一个或多个指定类型的组件
+        /// </summary>
+        public static bool HasComponent(
+            this Component obj, System.Type type)
+        {
+            return obj.GetComponent(type) != null;
+        }
+
+        /// <summary>
+        /// 检查目标组件的GameObject上是否有一个或多个指定类型的组件
+        /// </summary>
+        public static bool HasComponent<T>(
+            this Component obj) where T : Component
+        {
+            return obj.GetComponent<T>() != null;
+        }
+
+        /// <summary>
+        /// 在parent中查找组件，即使该组件处于非活动状态或已禁用 都能查询
+        /// </summary>
+        public static T GetComponentInParentHard<T>(
+            this Component obj) where T : Component
+        {
+            Assert.IsNotNull(obj);
+            var transform = obj.transform;
+            while (transform != null)
+            {
+                var component = transform.GetComponent<T>();
+                if (component != null)
+                {
+                    return component;
+                }
+
+                transform = transform.parent;
+            }
+
+            return null;
+        }
+    }
+}

Runtime/Extension/UnityEngage.GameObject/ComponentExtensions.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 15e221e13b3e456aa5e3473d1e28f921
+timeCreated: 1744372997