feat: initial import

GodotDI/Scope.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Reflection;
+using Godot;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace GodotHostTest.GodotDI;
+
+public partial class Scope : Node
+{
+    [Export] protected Node?[] InjectedNodes = [];
+
+    internal void ResolveInjectedNodes(IServiceProvider serviceProvider)
+    {
+        // resolve the injected nodes
+        // TODO: move to source generator, make it the only way for injection
+        foreach (var node in InjectedNodes)
+        {
+            if (node == null) continue;
+            foreach (var field in node.GetType()
+                         .GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
+            {
+                if (field.GetCustomAttribute<InjectAttribute>() == null) continue;
+                var fieldType = field.FieldType;
+                var service = serviceProvider.GetRequiredService(fieldType);
+                field.SetValue(node, service);
+            }
+        }
+    }
+}