1

Src/Core/AutoMapper/BITMapper.cs

@@ -4,13 +4,16 @@
     {
         public static void Map<T>(T source, T target) where T : class
         {
-            foreach (var info in typeof(T).GetProperties())
+            foreach (var info in source.GetType().GetProperties(ReflectionHelper.Flags))
             {
-                info.SetValue(source, info.GetValue(target));
+                if (info.CanWrite is false) continue;
+                var targetInfo = target.GetType().GetProperty(info.Name, ReflectionHelper.Flags);
+                targetInfo?.SetValue(target, info.GetValue(source));
             }
-            foreach (var info in typeof(T).GetFields())
+            foreach (var info in source.GetType().GetFields(ReflectionHelper.Flags))
             {
-                info.SetValue(source, info.GetValue(target));
+                var targetInfo = target.GetType().GetField(info.Name, ReflectionHelper.Flags);
+                targetInfo?.SetValue(target, info.GetValue(source));
             }
         }
     }

Src/Core/ECS/Built-In/IdComponent.cs

@@ -0,0 +1,14 @@
+using System.Dynamic;
+
+namespace BITKit.Entities
+{
+    public interface IdComponent
+    {
+        ulong Id { get; set; }
+    }
+    public interface IdComponent_String
+    {
+        string Id { get; }
+    }
+}
+