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Assets/Tremble/Attributes/Classes/BrushEntityAttribute.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;
+using UnityEngine;
+
+namespace TinyGoose.Tremble
+{
+	public enum CheckerboardStyle
+	{
+		None,
+		Light,
+		Dark,
+	}
+
+	public enum BrushType
+	{
+		// Solid brush with a texture (default)
+		Solid,
+
+		// Liquid brush (trigger collision) with a texture
+		Liquid,
+
+		// An invisible brush which is a Unity trigger
+		Trigger,
+
+		// An invisible (but solid) brush
+		Invisible
+	}
+
+	/// <summary>
+	/// Marks this MonoBehaviour as a component which can be added to arbitrary Brush entities from a map.
+	/// </summary>
+	[AttributeUsage(AttributeTargets.Class)]
+	public class BrushEntityAttribute : EntityAttributeBase
+	{
+		/// <summary>
+		/// A Tremble-compatible Brush entity.
+		/// </summary>
+		/// <param name="trenchBroomName">The name in TrenchBroom. e.g. "cool_entity".</param>
+		/// <param name="category">The category for TrenchBroom. e.g. "ent".</param>
+		/// <param name="type">The brush type. e.g. Trigger, Solid, Liquid.</param>
+		/// <param name="colour">The colour of this brush's texture.</param>
+		/// <param name="checkerStyle">The type of checkerboard for this brush's texture.</param>
+		/// <param name="layer">The layer name to put this brush on.</param>
+		public BrushEntityAttribute(
+				string trenchBroomName = null,
+				string category = null,
+            BrushType type = BrushType.Solid,
+            string colour = "",
+            CheckerboardStyle checkerStyle = CheckerboardStyle.None,
+				string layer = "")
+			: base(trenchBroomName, category)
+		{
+			m_BrushType = type;
+			m_Colour = colour.TryParseQ3Colour(out Color value) ? value : null;
+			m_CheckerStyle = checkerStyle;
+			m_LayerName = layer;
+		}
+
+		private readonly BrushType m_BrushType;
+		private readonly Color? m_Colour;
+		private readonly CheckerboardStyle m_CheckerStyle;
+		private readonly string m_LayerName;
+
+		public BrushType BrushType => m_BrushType;
+		public Color? Colour => m_Colour;
+		public CheckerboardStyle CheckerStyle => m_CheckerStyle;
+		public string LayerName => m_LayerName;
+	}
+}