Extending ScriptGlue now possible

GlitchyEditor/src/EditWindows/ComponentEditWindow.bf

@@ -19,15 +19,6 @@ namespace GlitchyEditor.EditWindows
 	{
 		private static uint32 TableId;
 
-		public static this()
-		{
-			/*ScriptGlue.OnRegisterNativeCalls.Add(new () => {
-				// TODO: Implement
-				Runtime.NotImplemented();
-			   //ScriptGlue.RegisterCall<function bool(ref AssetHandle)>("ScriptGlue::ImGuiExtension_ShowAssetDropTarget", => ShowAssetDropTarget);
-			});*/
-		}
-
 		public static void ShowComponents(Entity entity, Type componentType = null)
 		{
 			float cellPaddingY = ImGui.GetTextLineHeight() / 3.0f;

GlitchyEditor/src/Extensions/Engine/ScriptGlueExtension.bf

@@ -0,0 +1,24 @@
+using System;
+using GlitchyEditor.EditWindows;
+using GlitchyEngine.Content;
+
+namespace GlitchyEngine.Scripting;
+
+extension ScriptGlue
+{
+	static this()
+	{
+		OnRegisterNativeCalls.Add(new => RegisterExtensionCalls);
+	}
+
+	private static void RegisterExtensionCalls()
+	{
+		EngineFunctions.[Friend]_functions.ImGuiExtension_ShowAssetDropTarget = => ImGuiExtension_ShowAssetDropTarget;
+	}
+
+	[RegisterCall(EngineResultAsBool = true, IsExtension = true)]
+	public static EngineResult ImGuiExtension_ShowAssetDropTarget(ref AssetHandle assetHandle)
+	{
+		return ComponentEditWindow.ShowAssetDropTarget(ref assetHandle) ? .Ok : .False;
+	}
+}

GlitchyEngine/src/Scripting/ScriptGlue.bf

@@ -47,6 +47,7 @@ class MessageOrigin
 struct RegisterCallAttribute : Attribute
 {
 	public bool EngineResultAsBool { get; set mut; }
+	public bool IsExtension { get; set mut; }
 }
 
 struct TypeTranslationTemplate
@@ -177,13 +178,21 @@ struct EngineFunctionsGeneratorAttribute : Attribute, IComptimeTypeApply
 [EngineFunctionsGenerator]
 struct EngineFunctions
 {
+	static Self _functions;
+	
+	[RegisterMethod]
+	public static void FillEngineFunctions()
+	{
+		
+		OnRegisterNativeCalls.Invoke();
+
+		ScriptGlue.[Friend]_setEngineFunctions(&_functions);
+	}
 }
 
-static class ScriptGlue
-{
 /* Adding this attribute to a method will log method entry and returned Result<T> errors */
 [AttributeUsage(.Method)]
-	struct RegisterMethodAttribute : Attribute, IOnMethodInit
+public struct RegisterMethodAttribute : Attribute, IOnMethodInit
 {
     [Comptime]
     public void OnMethodInit(MethodInfo method, Self* prev)
@@ -194,21 +203,22 @@ static class ScriptGlue
 
         for (var methodInfo in typeof(ScriptGlue).GetMethods(.Static | .NonPublic | .FlattenHierarchy))
 		{
-				if (methodInfo.GetCustomAttribute<RegisterCallAttribute>() case .Ok(let attribute))
+			if (methodInfo.GetCustomAttribute<RegisterCallAttribute>() case .Ok(let attribute) && !attribute.IsExtension)
 			{
-					functionContent.AppendF($"functions.{methodInfo.Name} = => {methodInfo.Name};\n");
+				functionContent.AppendF($"_functions.{methodInfo.Name} = => ScriptGlue.[Friend]{methodInfo.Name};\n");
 				//functionContent.AppendF($"functions[{i}] = (void*)( => {methodInfo.Name});\n");
 				i++;
 			}
 		}
 
-			functionContent.Insert(0, scope $"EngineFunctions functions = .();\n");
+		//functionContent.Insert(0, scope $"EngineFunctions functions = .();\n");
 
 		Compiler.EmitMethodEntry(method, functionContent);
     }
 }
 
-
+static class ScriptGlue
+{
 	public static Event<delegate void()> OnRegisterNativeCalls ~ _.Dispose();
 
 	private function void SetEngineFunctions(EngineFunctions* engineFunctions);
@@ -242,16 +252,7 @@ static class ScriptGlue
 
 	private static void RegisterCalls()
 	{
-		FillEngineFunctions();
-	}
-	
-	[RegisterMethod]
-	private static void FillEngineFunctions()
-	{
-		
-		OnRegisterNativeCalls.Invoke();
-
-		_setEngineFunctions(&functions);
+		EngineFunctions.FillEngineFunctions();
 	}
 	
 	private static void RegisterComponent<T>() where T : struct, new
@@ -1421,8 +1422,6 @@ static class ScriptGlue
 
 		Log.EngineLogger.AssertDebug(context != null);
 
-		Log.EngineLogger.Trace(StringView(fieldName));
-
 		context.AddField(StringView(fieldName), type, valueObject, StringView(fullTypeName));
 	}
 	

ScriptCore/Extensions/ImGuiExtension.cs

@@ -77,9 +77,7 @@ public static class ImGuiExtension
 
     public static bool ShowAssetDropTarget(ref UUID uuid)
     {
-        // TODO: !!!
-       // return ScriptGlue.ImGuiExtension_ShowAssetDropTarget(ref uuid);
-       return false;
+       return ScriptGlue.ImGuiExtension_ShowAssetDropTarget(ref uuid);
     }
 
     public static bool Checkbox2(string label, ref bool2 value) => CheckboxN(2, label, ref value.X);