ecs and tranforms

added the moonworks ecs library.
testing it by setting up a transform and parent system.

Nerfed.Editor/Program.cs

@@ -1,9 +1,15 @@
-using Nerfed.Runtime;
+using MoonTools.ECS;
+using Nerfed.Runtime;
+using Nerfed.Runtime.Systems;
+using System.Numerics;
 
 namespace Nerfed.Editor;
 
 internal class Program
 {
+    private static readonly World world = new World();
+    private static List<MoonTools.ECS.System> systems = new List<MoonTools.ECS.System>();
+
     private static void Main(string[] args)
     {
         Engine.OnInitialize += HandleOnInitialize;
@@ -16,6 +22,16 @@ internal class Program
 
     private static void HandleOnInitialize()
     {
+        systems.Add(new ParentSystem(world));
+        systems.Add(new TransformSystem(world));
+
+        Entity ent1 = world.CreateEntity();
+        world.Set(ent1, new LocalTransform(new Vector3(1, 0, 0), Quaternion.Identity, Vector3.One));
+
+        Entity ent2 = world.CreateEntity();
+        world.Set(ent2, new LocalTransform(new Vector3(0, 1, 0), Quaternion.Identity, Vector3.One));
+        world.Set(ent2, new Parent(ent1));
+
         // Open project.
         // Setip EditorGui.
         EditorGui.Initialize();
@@ -23,6 +39,11 @@ internal class Program
 
     private static void HandleOnUpdate()
     {
+        foreach (MoonTools.ECS.System system in systems)
+        {
+            system.Update(Engine.Timestep);
+        }
+
         // Editor Update.
         EditorGui.Update();