新增volume更新器

Assets/Scripts/Volume/Updatement/VolumeIntUpdatement.cs

@@ -0,0 +1,19 @@
+using Demo.Attr;
+using UnityEngine;
+
+namespace Demo.Game
+{
+    [Scriptable]
+    public class VolumeIntUpdatement : BaseVolumeUpdatement<int>
+    {
+        public static VolumeIntUpdatement Make()
+        {
+            return new GameObject().AddComponent<VolumeIntUpdatement>();
+        }
+
+        protected override int Lerp(int begin, int end, float t)
+        {
+            return Mathf.FloorToInt(Mathf.Lerp(begin, end, t));
+        }
+    }
+}