feat: Add undo util

Author: jcs090218

Assets/JCSUnity/Scripts/Util/JCS_Undo.cs

@@ -0,0 +1,40 @@
+#if UNITY_EDITOR
+/**
+ * $File: JCS_Undo.cs $
+ * $Date: $
+ * $Revision: $
+ * $Creator: Jen-Chieh Shen $
+ * $Notice: See LICENSE.txt for modification and distribution information 
+ *                   Copyright (c) 2026 by Shen, Jen-Chieh $
+ */
+using System;
+using UnityEditor;
+
+namespace JCSUnity
+{
+    /// <summary>
+    /// Undo and redo utilities.
+    /// </summary>
+    public static class JCS_Undo
+    {
+        /* Variables */
+
+        /* Setter & Getter */
+
+        /* Functions */
+
+        /// <summary>
+        /// Like `Undo.RegisterCompleteObjectUndo` but a wrapper.
+        /// </summary>
+        public static void RegisterComplete(
+            UnityEngine.Object objectToUndo, string name, Action action)
+        {
+            Undo.RegisterCompleteObjectUndo(objectToUndo, name);
+
+            action?.Invoke();
+
+            EditorUtility.SetDirty(objectToUndo);
+        }
+    }
+}
+#endif

Assets/JCSUnity/Scripts/Util/JCS_Undo.cs.meta

@@ -52,6 +52,19 @@ public static int Delta(this int data, int val)
             return data + val;
         }
 
+        public static long Delta(this long data, long val, long max)
+        {
+            return data.Delta(val, 0, max);
+        }
+        public static long Delta(this long data, long val, long min, long max)
+        {
+            return System.Math.Clamp(data.Delta(val), min, max);
+        }
+        public static long Delta(this long data, long val)
+        {
+            return data + val;
+        }
+
         public static float Delta(this float data, float val, float max)
         {
             return data.Delta(val, 0.0f, max);
@@ -65,6 +78,19 @@ public static float Delta(this float data, float val)
             return data + val;
         }
 
+        public static double Delta(this double data, double val, double max)
+        {
+            return data.Delta(val, 0.0f, max);
+        }
+        public static double Delta(this double data, double val, double min, double max)
+        {
+            return System.Math.Clamp(data.Delta(val), min, max);
+        }
+        public static double Delta(this double data, double val)
+        {
+            return data + val;
+        }
+
         /// <summary>
         /// Delta the `num` with `val` by percentage and clamp the 
         /// result with `min` and `max`.
@@ -84,6 +110,21 @@ public static int DeltaP(this int data, int p)
             return data + val;
         }
 
+        public static long DeltaP(this long data, long p, long max)
+        {
+            return data.DeltaP(p, 0, max);
+        }
+        public static long DeltaP(this long data, long p, long min, long max)
+        {
+            return System.Math.Clamp(data.DeltaP(p), min, max);
+        }
+        public static long DeltaP(this long data, long p)
+        {
+            int val = (int)(data * p / 100.0);
+
+            return data + val;
+        }
+
         public static float DeltaP(this float data, float p, float max)
         {
             return data.DeltaP(p, 0.0f, max);
@@ -99,6 +140,21 @@ public static float DeltaP(this float data, float p)
             return data + val;
         }
 
+        public static double DeltaP(this double data, double p, double max)
+        {
+            return data.DeltaP(p, 0.0, max);
+        }
+        public static double DeltaP(this double data, double p, double min, double max)
+        {
+            return System.Math.Clamp(data.DeltaP(p), min, max);
+        }
+        public static double DeltaP(this double data, double p)
+        {
+            double val = (data * p / 100.0);
+
+            return data + val;
+        }
+
         #endregion
 
         #region String

Assets/JCSUnity/Scripts/Util/JCS_Util.cs

@@ -0,0 +1,9 @@
+# JCS_Undo
+
+Undo and redo utilities.
+
+## Functions
+
+| Name             | Description                                           |
+|:-----------------|:------------------------------------------------------|
+| RegisterComplete | Like `Undo.RegisterCompleteObjectUndo` but a wrapper. |