refactor

Runtime/Engine/Code/Foundation/ConstsProperty.cs

@@ -0,0 +1,37 @@
+using System;
+using UnityEngine;
+
+namespace RebootKit.Engine.Foundation {
+    [Serializable]
+    public struct ConstsProperty<T> {
+        [SerializeField] T m_InlineValue;
+        [SerializeField] ConstantsAsset<T> m_Asset;
+        [SerializeField] bool m_UseInlineValue;
+        
+        public ConstsProperty(T value) {
+            m_InlineValue = value;
+            m_Asset = null;
+            m_UseInlineValue = true;
+        }
+        
+        public ConstsProperty(ConstantsAsset<T> asset) {
+            m_InlineValue = default;
+            m_Asset = asset;
+            m_UseInlineValue = false;
+        }
+
+        public T Value {
+            get {
+                if (m_UseInlineValue) {
+                    return m_InlineValue;
+                }
+                
+                if (m_Asset != null) {
+                    return m_Asset.Value;
+                }
+
+                return default;
+            }
+        }
+    }
+}