Add initial brush list support

project/code/LGS/Database/Chunks/BrList.cs

@@ -0,0 +1,125 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Numerics;
+using System.Text;
+
+namespace KeepersCompound.LGS.Database.Chunks;
+
+public class BrList : IChunk
+{
+    // TODO: Add better handling of the different brush types
+    public record Brush
+    {
+        public enum Media
+        {
+            Room = 0xFB,
+            Flow = 0xFC,
+            Object = 0xFD,
+            Area = 0xFE,
+            Light = 0xFF,
+            FillSolid = 0x00,
+            FillAir = 0x01,
+            FillWater = 0x02,
+            Flood = 0x03,
+            Evaporate = 0x04,
+            SolidToWater = 0x05,
+            SolidToAir = 0x06,
+            AirToSolid = 0x07,
+            WaterToSolid = 0x08,
+            Blockable = 0x09,
+        };
+
+        public record TexInfo
+        {
+            public short id;
+            public ushort rot;
+            public short scale;
+            public ushort x;
+            public ushort y;
+
+            public TexInfo(BinaryReader reader)
+            {
+                id = reader.ReadInt16();
+                rot = reader.ReadUInt16();
+                scale = reader.ReadInt16();
+                x = reader.ReadUInt16();
+                y = reader.ReadUInt16();
+            }
+        };
+
+        public short id;
+        public short time;
+        public uint brushInfo;
+        public short textureId;
+        public Media media;
+        public sbyte flags;
+        public Vector3 position;
+        public Vector3 size;
+        public Vector3 angle;
+        public short currentFaceIndex;
+        public float gridLineSpacing;
+        public Vector3 gridPhaseShift;
+        public Vector3 gridOrientation;
+        public bool gridEnabled;
+        public byte numFaces;
+        public sbyte edgeSelected;
+        public sbyte pointSelected;
+        public sbyte useFlag;
+        public sbyte groupId;
+        public TexInfo[] txs;
+
+        public Brush(BinaryReader reader)
+        {
+            id = reader.ReadInt16();
+            time = reader.ReadInt16();
+            brushInfo = reader.ReadUInt32();
+            textureId = reader.ReadInt16();
+            media = (Media)reader.ReadByte();
+            flags = reader.ReadSByte();
+            position = reader.ReadVec3();
+            size = reader.ReadVec3();
+            angle = new Vector3(reader.ReadUInt16(), reader.ReadUInt16(), reader.ReadUInt16());
+            currentFaceIndex = reader.ReadInt16();
+            gridLineSpacing = reader.ReadSingle();
+            gridPhaseShift = reader.ReadVec3();
+            gridOrientation = new Vector3(reader.ReadUInt16(), reader.ReadUInt16(), reader.ReadUInt16());
+            gridEnabled = reader.ReadBoolean();
+            numFaces = reader.ReadByte();
+            edgeSelected = reader.ReadSByte();
+            pointSelected = reader.ReadSByte();
+            useFlag = reader.ReadSByte();
+            groupId = reader.ReadSByte();
+            reader.ReadBytes(4);
+            if ((sbyte)media >= 0)
+            {
+                txs = new TexInfo[numFaces];
+                for (var i = 0; i < numFaces; i++)
+                {
+                    txs[i] = new TexInfo(reader);
+                }
+            }
+            else
+            {
+                txs = Array.Empty<TexInfo>();
+            }
+        }
+    }
+
+    public ChunkHeader Header { get; set; }
+    public List<Brush> Brushes { get; set; }
+
+    public void ReadData(BinaryReader reader, DbFile.TableOfContents.Entry entry)
+    {
+        Brushes = new List<Brush>();
+        while (reader.BaseStream.Position < entry.Offset + entry.Size + 24)
+        {
+            Brushes.Add(new Brush(reader));
+        }
+    }
+
+    public void WriteData(BinaryWriter writer)
+    {
+        throw new System.NotImplementedException();
+    }
+}

project/code/LGS/Database/File.cs

@@ -100,6 +100,7 @@ public class DbFile
             // "AICONVERSE" => new AiConverseChunk(),
             "TXLIST" => new TxList(),
             "WREXT" => new WorldRep(),
+            "BRLIST" => new BrList(),
             _ => new GenericChunk(),
         };
     }