304 lines
11 KiB
C#
304 lines
11 KiB
C#
using System;
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using System.IO;
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using System.Numerics;
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namespace KeepersCompound.LGS.Database.Chunks;
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public class WorldRep : IChunk
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{
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public struct WrHeader
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{
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// Extended header content
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public int Size { get; set; }
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public int Version { get; set; }
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public int Flags { get; set; }
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public uint LightmapFormat { get; set; }
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public int LightmapScale { get; set; }
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// Standard header
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public uint DataSize { get; set; }
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public uint CellCount { get; set; }
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public WrHeader(BinaryReader reader)
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{
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Size = reader.ReadInt32();
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Version = reader.ReadInt32();
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Flags = reader.ReadInt32();
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LightmapFormat = reader.ReadUInt32();
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LightmapScale = reader.ReadInt32();
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DataSize = reader.ReadUInt32();
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CellCount = reader.ReadUInt32();
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}
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public readonly float LightmapScaleMultiplier()
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{
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return Math.Sign(LightmapScale) switch
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{
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1 => LightmapScale,
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-1 => 1.0f / LightmapScale,
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_ => 1.0f,
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};
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}
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}
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public struct Cell
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{
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public struct Poly
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{
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public byte Flags { get; set; }
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public byte VertexCount { get; set; }
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public byte PlaneId { get; set; }
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public byte ClutId { get; set; }
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public ushort Destination { get; set; }
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public byte MotionIndex { get; set; }
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public Poly(BinaryReader reader)
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{
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Flags = reader.ReadByte();
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VertexCount = reader.ReadByte();
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PlaneId = reader.ReadByte();
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ClutId = reader.ReadByte();
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Destination = reader.ReadUInt16();
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MotionIndex = reader.ReadByte();
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reader.ReadByte();
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}
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}
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public struct RenderPoly
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{
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public (Vector3, Vector3) TextureVectors { get; set; }
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public (float, float) TextureBases { get; set; }
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public ushort TextureId { get; set; }
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public ushort CachedSurface { get; set; }
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public float TextureMagnitude { get; set; }
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public Vector3 Center { get; set; }
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public RenderPoly(BinaryReader reader)
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{
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TextureVectors = (reader.ReadVec3(), reader.ReadVec3());
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TextureBases = (reader.ReadSingle(), reader.ReadSingle());
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TextureId = reader.ReadUInt16();
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CachedSurface = reader.ReadUInt16();
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TextureMagnitude = reader.ReadSingle();
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Center = reader.ReadVec3();
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}
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}
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public struct LightmapInfo
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{
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public (short, short) Bases { get; set; }
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public short PaddedWidth { get; set; }
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public byte Height { get; set; }
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public byte Width { get; set; }
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public uint DataPtr { get; set; }
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public uint DynamicLightPtr { get; set; }
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public uint AnimLightBitmask { get; set; }
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public LightmapInfo(BinaryReader reader)
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{
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Bases = (reader.ReadInt16(), reader.ReadInt16());
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PaddedWidth = reader.ReadInt16();
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Height = reader.ReadByte();
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Width = reader.ReadByte();
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DataPtr = reader.ReadUInt32();
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DynamicLightPtr = reader.ReadUInt32();
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AnimLightBitmask = reader.ReadUInt32();
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}
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}
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public struct Lightmap
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{
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public byte[] Pixels { get; set; }
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public int Layers;
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public int Width;
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public int Height;
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public int Bpp;
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public Lightmap(BinaryReader reader, byte width, byte height, uint bitmask, int bytesPerPixel)
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{
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var count = 1 + BitOperations.PopCount(bitmask);
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var length = bytesPerPixel * width * height * count;
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Pixels = reader.ReadBytes(length);
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Layers = count;
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Width = width;
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Height = height;
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Bpp = bytesPerPixel;
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}
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public readonly Vector4 GetPixel(uint layer, uint x, uint y)
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{
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if (layer >= Layers || x >= Width || y >= Height)
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{
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return Vector4.Zero;
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}
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var idx = 0 + x * Bpp + y * Bpp * Width + layer * Bpp * Width * Height;
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switch (Bpp)
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{
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case 1:
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var raw1 = Pixels[idx];
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return new Vector4(raw1, raw1, raw1, 255) / 255.0f;
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case 2:
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var raw2 = Pixels[idx] + (Pixels[idx + 1] << 8);
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return new Vector4(raw2 & 31, (raw2 >> 5) & 31, (raw2 >> 10) & 31, 31) / 31.0f;
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case 4:
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return new Vector4(Pixels[idx + 2], Pixels[idx + 1], Pixels[idx], Pixels[idx + 3]) / 255.0f;
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default:
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return Vector4.Zero;
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}
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}
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public readonly byte[] AsBytesRgba(int layer)
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{
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ArgumentOutOfRangeException.ThrowIfLessThan(layer, 0, nameof(layer));
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ArgumentOutOfRangeException.ThrowIfGreaterThan(layer, Layers, nameof(layer));
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var pIdx = layer * Bpp * Width * Height;
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var length = 4 * Width * Height;
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var bytes = new byte[length];
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for (var i = 0; i < length; i += 4, pIdx += Bpp)
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{
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switch (Bpp)
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{
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case 1:
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var raw1 = Pixels[pIdx];
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bytes[i] = raw1;
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bytes[i + 1] = raw1;
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bytes[i + 2] = raw1;
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bytes[i + 3] = 255;
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break;
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case 2:
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var raw2 = Pixels[pIdx] + (Pixels[pIdx + 1] << 8);
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bytes[i] = (byte)(255 * (raw2 & 31) / 31.0f);
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bytes[i + 1] = (byte)(255 * ((raw2 >> 5) & 31) / 31.0f);
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bytes[i + 2] = (byte)(255 * ((raw2 >> 10) & 31) / 31.0f);
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bytes[i + 3] = 255;
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break;
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case 4:
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bytes[i] = Pixels[pIdx + 2];
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bytes[i + 1] = Pixels[pIdx + 1];
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bytes[i + 2] = Pixels[pIdx];
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bytes[i + 3] = Pixels[pIdx + 3];
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break;
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}
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}
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return bytes;
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}
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}
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public byte VertexCount { get; set; }
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public byte PolyCount { get; set; }
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public byte RenderPolyCount { get; set; }
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public byte PortalPolyCount { get; set; }
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public byte PlaneCount { get; set; }
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public byte Medium { get; set; }
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public byte Flags { get; set; }
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public int PortalVertices { get; set; }
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public ushort NumVList { get; set; }
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public byte AnimLightCount { get; set; }
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public byte MotionIndex { get; set; }
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public Vector3 SphereCenter { get; set; }
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public float SphereRadius { get; set; }
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public Vector3[] Vertices { get; set; }
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public Poly[] Polys { get; set; }
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public RenderPoly[] RenderPolys { get; set; }
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public uint IndexCount { get; set; }
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public byte[] Indices { get; set; }
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public Plane[] Planes { get; set; }
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public ushort[] AnimLights { get; set; }
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public LightmapInfo[] LightList { get; set; }
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public Lightmap[] Lightmaps { get; set; }
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public int LightIndexCount { get; set; }
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public ushort[] LightIndices { get; set; }
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public Cell(BinaryReader reader, int bpp)
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{
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VertexCount = reader.ReadByte();
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PolyCount = reader.ReadByte();
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RenderPolyCount = reader.ReadByte();
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PortalPolyCount = reader.ReadByte();
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PlaneCount = reader.ReadByte();
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Medium = reader.ReadByte();
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Flags = reader.ReadByte();
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PortalVertices = reader.ReadInt32();
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NumVList = reader.ReadUInt16();
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AnimLightCount = reader.ReadByte();
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MotionIndex = reader.ReadByte();
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SphereCenter = reader.ReadVec3();
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SphereRadius = reader.ReadSingle();
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Vertices = new Vector3[VertexCount];
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for (var i = 0; i < VertexCount; i++)
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{
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Vertices[i] = reader.ReadVec3();
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}
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Polys = new Poly[PolyCount];
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for (var i = 0; i < PolyCount; i++)
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{
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Polys[i] = new Poly(reader);
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}
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RenderPolys = new RenderPoly[RenderPolyCount];
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for (var i = 0; i < RenderPolyCount; i++)
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{
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RenderPolys[i] = new RenderPoly(reader);
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}
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IndexCount = reader.ReadUInt32();
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Indices = new byte[IndexCount];
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for (var i = 0; i < IndexCount; i++)
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{
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Indices[i] = reader.ReadByte();
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}
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Planes = new Plane[PlaneCount];
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for (var i = 0; i < PlaneCount; i++)
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{
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Planes[i] = new Plane(reader.ReadVec3(), reader.ReadSingle());
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}
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AnimLights = new ushort[AnimLightCount];
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for (var i = 0; i < AnimLightCount; i++)
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{
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AnimLights[i] = reader.ReadUInt16();
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}
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LightList = new LightmapInfo[RenderPolyCount];
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for (var i = 0; i < RenderPolyCount; i++)
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{
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LightList[i] = new LightmapInfo(reader);
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}
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Lightmaps = new Lightmap[RenderPolyCount];
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for (var i = 0; i < RenderPolyCount; i++)
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{
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var info = LightList[i];
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Lightmaps[i] = new Lightmap(reader, info.Width, info.Height, info.AnimLightBitmask, bpp);
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}
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LightIndexCount = reader.ReadInt32();
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LightIndices = new ushort[LightIndexCount];
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for (var i = 0; i < LightIndexCount; i++)
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{
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LightIndices[i] = reader.ReadUInt16();
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}
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}
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}
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public ChunkHeader Header { get; set; }
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public WrHeader DataHeader { get; set; }
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public Cell[] Cells { get; set; }
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public void ReadData(BinaryReader reader, DbFile.TableOfContents.Entry entry)
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{
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DataHeader = new(reader);
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var bpp = (DataHeader.LightmapFormat == 0) ? 2 : 4;
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Cells = new Cell[DataHeader.CellCount];
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for (var i = 0; i < DataHeader.CellCount; i++)
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{
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Cells[i] = new Cell(reader, bpp);
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}
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// TODO: All the other info lol
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}
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public void WriteData(BinaryWriter writer)
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{
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throw new System.NotImplementedException();
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}
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} |