Second commit

Assets/Tremble/Attributes/Fields/SpawnFlagsAttribute.cs

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+//
+// This file is part of the Tremble package by Tiny Goose.
+// Copyright (c) 2024-2026 TinyGoose Ltd., All Rights Reserved.
+//
+
+using System;
+
+namespace TinyGoose.Tremble
+{
+	/// <summary>
+	/// Marks this boolean as being a spawnflags field.
+	/// You can either provide an explicit bit to use, or omit and let the system guess based on order. 
+	/// </summary>
+	[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property)]
+	public class SpawnFlagsAttribute : Attribute
+	{
+		public SpawnFlagsAttribute(int bit = -1)
+		{
+			//NOTE: Change MapBspGetters if this changes!!
+			m_Bit = bit;
+		}
+
+		private readonly int m_Bit;
+		public int Bit => m_Bit;
+	}
+	
+	/// <summary>
+	/// Marks this boolean as never being a spawnflags field.
+	/// Use this is you have the auto-spawnflags flag set for booleans. 
+	/// </summary>
+	[AttributeUsage(AttributeTargets.Field)]
+	public class NoSpawnFlagsAttribute : Attribute
+	{
+		//NOTE: Change MapBspGetters if this changes!!
+	}
+}

Assets/Tremble/Attributes/Fields/SpawnFlagsAttribute.cs.meta

@@ -0,0 +1,10 @@
+fileFormatVersion: 2
+guid: 0102725e5aa1439cbb30a9675ce4513d
+timeCreated: 1705750006
+AssetOrigin:
+  serializedVersion: 1
+  productId: 277805
+  packageName: Tremble - Map Importer
+  packageVersion: 1.11.1
+  assetPath: Assets/Tremble/Attributes/Fields/SpawnFlagsAttribute.cs
+  uploadId: 939664

Assets/Tremble/Attributes/Fields/TrembleAttribute.cs

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+//
+// This file is part of the Tremble package by Tiny Goose.
+// Copyright (c) 2024-2026 TinyGoose Ltd., All Rights Reserved.
+//
+
+using System;
+
+namespace TinyGoose.Tremble
+{
+	/// <summary>
+	/// Marks a field as being serialised for maps (even if [SerializeField] is absent)
+	/// </summary>
+	[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property)]
+	public class TrembleAttribute : Attribute
+	{
+		public TrembleAttribute(string name = null, bool isRotation = false)
+		{
+			//NOTE: Change MapBspGetters if this changes!!
+			m_OverrideName = name;
+			m_IsRotation = isRotation;
+		}
+
+		private readonly string m_OverrideName;
+		private readonly bool m_IsRotation;
+
+		public string OverrideName => m_OverrideName;
+		public bool IsRotation => m_IsRotation;
+	}
+
+
+	/// <summary>
+	/// Marks a field as NEVER being serialised for maps (even if [SerializeField] is on)
+	/// </summary>
+	[AttributeUsage(AttributeTargets.Field)]
+	public class NoTrembleAttribute : Attribute
+	{
+		//NOTE: Change MapBspGetters if this changes!!
+	}
+}

Assets/Tremble/Attributes/Fields/TrembleAttribute.cs.meta

@@ -0,0 +1,10 @@
+fileFormatVersion: 2
+guid: 071a562d7c7647a18ebeb57869dfad3a
+timeCreated: 1711702937
+AssetOrigin:
+  serializedVersion: 1
+  productId: 277805
+  packageName: Tremble - Map Importer
+  packageVersion: 1.11.1
+  assetPath: Assets/Tremble/Attributes/Fields/TrembleAttribute.cs
+  uploadId: 939664