Show enum fields in Edit mode

GlitchyEditor/SandboxProject/Assets/Scripts/MyTestEntity.cs

@@ -11,9 +11,9 @@ namespace Sandbox
 
     public enum MyEnum
     {
-        Yes,
+        Yes = 1,
         No,
-        Maybe
+        Maybe = 1337
     }
 
     public struct MyStruct
@@ -53,7 +53,9 @@ namespace Sandbox
         [ShowInEditor] private int MyNumber = 1337;
         //[ShowInEditor] public double MyDouble = 1000.0f;
 
-        //public MyStruct AStruct;
+        public MyStruct AStruct;
+
+        public MyEnum AEnum = MyEnum.Maybe;
         
         public Camera Camera;
 

GlitchyEditor/src/EditWindows/ComponentEditWindow.bf

@@ -693,8 +693,7 @@ namespace GlitchyEditor.EditWindows
 							field.SetData(value);
 
 					case .Enum:
-						// TODO!
-						
+						ShowEnumSelector(field, fieldName, scriptClass);
 					//case .String:
 						// TODO!
 
@@ -716,6 +715,33 @@ namespace GlitchyEditor.EditWindows
 			}
 		}
 
+		private static void ShowEnumSelector(ScriptFieldInstance* field, StringView fieldName, ScriptClass scriptClass)
+		{
+			ScriptField scriptField = scriptClass.Fields[fieldName];
+			SharpEnum enumType = scriptField.SharpType as SharpEnum;
+	
+			Log.EngineLogger.Assert(enumType != null, "Enum must have a SharpEnum!");
+	
+			// Simply get Enum as a uint64
+			var fieldValue = field.GetData<uint64>();
+	
+			StringView valueName = "<Invalid Value>";
+	
+			if (enumType.Values.TryGetValue(fieldValue, let enumValue))
+				valueName = enumValue.Name;
+	
+			if (ImGui.BeginCombo(fieldName.Ptr, valueName.Ptr))
+			{
+				for (let (entryValue, enumEntry) in enumType.Values)
+				{
+					if (ImGui.Selectable(enumEntry.Name.Ptr, fieldValue == entryValue))
+						field.SetData(entryValue);
+				}
+	
+				ImGui.EndCombo();
+			}
+		}
+
 		private static Entity? ShowEntitySelector()
 		{
 			static char8[128] entitySearch = .();

GlitchyEngine/src/Scripting/ScriptClass.bf

@@ -13,13 +13,15 @@ public struct ScriptField
 	internal MonoClassField* _monoField;
 	public bool IsStatic;
 	public ScriptFieldType FieldType;
+	public SharpType SharpType;
 
-	internal this(StringView name, MonoClassField* monoField, bool isStatic, ScriptFieldType fieldType)
+	internal this(StringView name, MonoClassField* monoField, bool isStatic, ScriptFieldType fieldType, SharpType sharpType)
 	{
 		Name = name;
 		_monoField = monoField;
 		IsStatic = isStatic;
 		FieldType = fieldType;
+		SharpType = sharpType;
 	}
 
 	public bool IsType(SharpClass otherClass, bool checkIfSubtype)
@@ -147,10 +149,12 @@ class SharpClass : SharpType
 
 			ScriptFieldType fieldType = ScriptEngineHelper.GetScriptFieldType(type);
 
+			SharpType sharpType = null;
+
 			// If field type is none the field might be a struct, class or enum
 			if (fieldType == .None)
 			{
-				SharpType sharpType = ScriptEngine.GetSharpType(type);
+				sharpType = ScriptEngine.GetSharpType(type);
 				fieldType = sharpType?.ScriptType ?? .None;
 				
 				if (sharpType == null)
@@ -169,7 +173,66 @@ class SharpClass : SharpType
 				(attributes != null &&
 				Mono.mono_custom_attrs_has_attr(attributes, ScriptEngine.Attributes.s_ShowInEditorAttribute)))
 			{
-				_monoFields[name] = .(name, currentField, flags.HasFlag(.Static), fieldType);
+				_monoFields[name] = .(name, currentField, flags.HasFlag(.Static), fieldType, sharpType);
+			}
+		}
+	}
+}
+
+struct EnumValue
+{
+	public StringView Name;
+
+	public uint64 Value;
+
+	public this(StringView name, uint64 value)
+	{
+		Name = name;
+		Value = value;
+	}
+}
+
+class SharpEnum : SharpClass
+{
+	private append Dictionary<uint64, EnumValue> _values = .();
+
+	public Dictionary<uint64, EnumValue> Values => _values;
+
+	private int _underlyingSize = 0;
+
+	public this(StringView classNamespace, StringView className, MonoImage* image)
+		: base(classNamespace, className, image, .Enum)
+	{
+		ExtractEnumValues();
+	}
+
+	private void ExtractEnumValues()
+	{
+		_underlyingSize = Mono.mono_class_instance_size(_monoClass);
+		Log.EngineLogger.Assert(_underlyingSize != 0);
+
+		var vtable = Mono.mono_class_vtable(ScriptEngine.[Friend]s_AppDomain, _monoClass);
+
+		void* iterator = null;
+		MonoClassField* currentField = null;
+		while ((currentField = Mono.mono_class_get_fields(_monoClass, &iterator)) != null)
+		{
+			MonoType* fieldType = Mono.mono_field_get_type(currentField);
+			MonoClass* fieldClass = Mono.mono_type_get_class(fieldType);
+
+			FieldAttribute fieldFlags = (.)Mono.mono_field_get_flags(currentField);
+
+			if (fieldFlags.HasFlag(.Public) && fieldFlags.HasFlag(.Static) &&
+				fieldClass != null && Mono.mono_class_is_subclass_of(fieldClass, _monoClass, false))
+			{
+				StringView fieldName = StringView(Mono.mono_field_get_name(currentField));
+
+				uint64 value = 0;
+				Mono.mono_field_static_get_value(vtable, currentField, &value);
+
+				EnumValue enumValue = .(fieldName, value);
+	
+				_values.Add(value, enumValue);
 			}
 		}
 	}

GlitchyEngine/src/Scripting/ScriptEngine.bf

@@ -460,38 +460,38 @@ static class ScriptEngine
 		// TODO: at the moment only allow user-structs
 		//if (classNamespace.StartsWith("GlitchyEngine"))
 		//	return null;
+		
+		ScriptFieldType scriptType = .None;
 
-		switch (fieldType)
+		if (Mono.mono_class_is_enum(monoClass))
 		{
-		case .Class, .Valuetype, .Enum:
-			ScriptFieldType scriptType = .None;
+			scriptType = .Enum;
 
-			if (fieldType == .Class)
-			{
-				if (Mono.mono_class_is_subclass_of(monoClass, s_EntityRoot._monoClass, false))
-				{
-					scriptType = .Entity;
-				}
-				else if (Mono.mono_class_is_subclass_of(monoClass, s_ComponentRoot._monoClass, false))
-				{
-					scriptType = .Component;
-				}
-				else
-				{
-					scriptType = .Class;
-				}
-			}
-			else if (fieldType == .Enum)
-				scriptType = .Enum;
-			else if (fieldType == .Valuetype)
-				scriptType = .Struct;
-
-			Log.EngineLogger.AssertDebug(scriptType != .None);
-
-			return new SharpClass(classNamespace, className, Mono.mono_class_get_image(monoClass), scriptType);
-		default:
-			return null;
+			return new SharpEnum(classNamespace, className, Mono.mono_class_get_image(monoClass));
 		}
+		else if (fieldType == .Class)
+		{
+			if (Mono.mono_class_is_subclass_of(monoClass, s_EntityRoot._monoClass, false))
+			{
+				scriptType = .Entity;
+			}
+			else if (Mono.mono_class_is_subclass_of(monoClass, s_ComponentRoot._monoClass, false))
+			{
+				scriptType = .Component;
+			}
+			else
+			{
+				scriptType = .Class;
+			}
+		}
+		else if (fieldType == .Valuetype)
+		{
+			scriptType = .Struct;
+		}
+
+		Log.EngineLogger.AssertDebug(scriptType != .None);
+
+		return new SharpClass(classNamespace, className, Mono.mono_class_get_image(monoClass), scriptType);
 	}
 
 	public static void CreateScriptFieldMap(Entity entity)

GlitchyEngineHelper/src/Mono/Mono.bf

@@ -91,6 +91,9 @@ static class Mono
 	
 	[LinkName(.C)]
 	public static extern MonoType* mono_class_get_type(MonoClass* monoClass);
+	
+	[LinkName(.C)]
+	public static extern int32 mono_class_instance_size(MonoClass* @class);
 
 	[LinkName(.C)]
 	public static extern char8* mono_class_get_namespace(MonoClass* monoClass);
@@ -181,6 +184,9 @@ static class Mono
 
 	[LinkName(.C)]
 	public static extern void mono_field_get_value(MonoObject* object, MonoClassField* field, void* value);
+	
+	[LinkName(.C)]
+	public static extern void mono_field_static_get_value(MonoVTable* vt, MonoClassField* field, void* value);
 
 	/// Gets the field as object, boxes the value if it is a valuetype.
 	[LinkName(.C)]
@@ -251,6 +257,14 @@ static class Mono
 
 	[LinkName(.C)]
 	public static extern MonoClass* mono_object_get_class(MonoObject* obj);
+
+	
+	[LinkName(.C)]
+	public static extern mono_bool mono_class_is_enum(MonoClass* @class);
+
+	
+	[LinkName(.C)]
+	public static extern MonoVTable* mono_class_vtable(MonoDomain* domain, MonoClass* @class);
 }
 
 struct MonoDomain;
@@ -273,6 +287,8 @@ struct MonoProperty;
 
 struct MonoThread;
 
+struct MonoVTable;
+
 struct MonoException
 {
 	void* _bla;