Second commit

Assets/Tremble/IO/FGD/FgdInferredFieldExtensions.cs

@@ -0,0 +1,130 @@
+//
+// This file is part of the Tremble package by Tiny Goose.
+// Copyright (c) 2024-2026 TinyGoose Ltd., All Rights Reserved.
+//
+
+using System;
+using System.Globalization;
+
+namespace TinyGoose.Tremble
+{
+	public static class FgdInferredFieldExtensions
+	{
+		public static void TryAddInferredField(this FgdClass fgdClass, string key, string value)
+		{
+			// ID property (or "targetname")
+			string identityProperty = TrembleSyncSettings.Get().IdentityPropertyName;
+			if (key.EqualsInvariant("targetname") || key.EqualsInvariant(identityProperty, caseSensitive: true))
+			{
+				return;
+			}
+
+			// "Target"
+			if (key.ContainsInvariant(FgdConsts.PROPERTY_TARGET))
+			{
+				fgdClass.AddField(new FgdTargetDestinationField
+				{
+					Name = key,
+					Description = $"{key.ToNamingConvention(NamingConvention.UpperCamelCase)} of this Entity"
+				});
+
+				return;
+			}
+
+			// "Origin" - skip
+			if (key.EqualsInvariant(FgdConsts.PROPERTY_ORIGIN))
+			{
+				return;
+			}
+
+			// "Scale" - skip
+			if (key.EqualsInvariant(FgdConsts.PROPERTY_SCALE))
+			{
+				return;
+			}
+
+			// "Parent" - skip
+			if (key.EqualsInvariant(FgdConsts.PROPERTY_PARENT))
+			{
+				return;
+			}
+
+			// Angles - skip
+			if (key.EqualsInvariant(FgdConsts.PROPERTY_ANGLES))
+			{
+				return;
+			}
+
+			// _tb_textures, group, etc - skip
+			if (key.StartsWithInvariant(TBConsts.TB_PREFIX))
+			{
+				return;
+			}
+
+			// Spawnflags
+			if (key.EqualsInvariant(FgdConsts.PROPERTY_SPAWNFLAGS))
+			{
+				if (!int.TryParse(value, out int flags))
+					return;
+
+				int bit = 0;
+				while (flags > 0)
+				{
+					if (!fgdClass.HasSpawnFlag(bit))
+					{
+						fgdClass.AddField(new FgdSpawnFlagField
+						{
+							Bit = bit,
+							Description = $"Unknown spawnflag bit #{bit}"
+						});
+					}
+
+					bit++;
+					flags >>= 1;
+				}
+
+				return;
+			}
+
+			// Anything else? Try to infer type.
+			if (IsValueVector(value))
+			{
+				fgdClass.AddField(new FgdVectorField
+				{
+					Name = key,
+					Description = $"Vector {key}",
+				});
+			}
+			else if (IsValueFloat(value))
+			{
+				fgdClass.AddField(new FgdFloatField
+				{
+					Name = key,
+					Description = $"Float {key}",
+				});
+			}
+			else
+			{
+				fgdClass.AddField(new FgdStringField
+				{
+					Name = key,
+					Description = $"String {key}",
+				});
+			}
+		}
+
+		private static bool IsValueFloat(string value) => value.TryParseFloat(out float _);
+
+		private static bool IsValueVector(string value)
+		{
+			if (value.IsNullOrEmpty())
+				return false;
+
+			string[] parts = value.Split(' ');
+			if (parts.Length != 3)
+				return false;
+
+			return IsValueFloat(parts[0]) && IsValueFloat(parts[1]) && IsValueFloat(parts[2]);
+		}
+	}
+}