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Refactor object and animated textures (LostArtefacts#648)
Part of LostArtefacts#619.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,229 @@ | ||
| using System.Diagnostics; | ||
| using System.Drawing; | ||
| using TRLevelControl.Model; | ||
|
|
||
| namespace TRLevelControl.Build; | ||
|
|
||
| public class TRTextureBuilder | ||
| { | ||
| private static readonly string _texMarker = "TEX"; | ||
|
|
||
| private readonly TRGameVersion _version; | ||
| private readonly ITRLevelObserver _observer; | ||
|
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| public TRTextureBuilder(TRGameVersion version, ITRLevelObserver observer = null) | ||
| { | ||
| _version = version; | ||
| _observer = observer; | ||
| } | ||
|
|
||
| public List<TRObjectTexture> ReadObjectTextures(TRLevelReader reader) | ||
| { | ||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| string texMarker = new(reader.ReadChars(_texMarker.Length)); | ||
| Debug.Assert(texMarker == _texMarker); | ||
| if (_version == TRGameVersion.TR5) | ||
| { | ||
| Debug.Assert(reader.ReadByte() == 0); | ||
| } | ||
| } | ||
|
|
||
| List<TRObjectTexture> textures = new(); | ||
| uint numTextures = reader.ReadUInt32(); | ||
|
|
||
| for (int i = 0; i < numTextures; i++) | ||
| { | ||
| textures.Add(Read(reader, i)); | ||
| } | ||
|
|
||
| return textures; | ||
| } | ||
|
|
||
| public List<TRAnimatedTexture> ReadAnimatedTextures(TRLevelReader reader) | ||
| { | ||
| uint textureLength = reader.ReadUInt32(); | ||
| long endPosition = reader.BaseStream.Position + textureLength * sizeof(ushort); | ||
|
|
||
| ushort numGroups = reader.ReadUInt16(); | ||
| List<TRAnimatedTexture> textures = reader.ReadAnimatedTextures(numGroups); | ||
|
|
||
| // Old TRLEs can contain unreferenced texture data, so ensure to seek to the | ||
| // end of the data before finishing. | ||
| reader.BaseStream.Position = Math.Max(endPosition, reader.BaseStream.Position); | ||
|
|
||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| // The first sets in the group are UVRotate mode, else classic. | ||
| byte uvRotates = reader.ReadByte(); | ||
| for (int i = 0; i < uvRotates && i < numGroups; i++) | ||
| { | ||
| textures[i].Mode = TRAnimatedTextureMode.UVRotate; | ||
| } | ||
| } | ||
|
|
||
| return textures; | ||
| } | ||
|
|
||
| public void Write(TRLevelWriter writer, List<TRObjectTexture> textures) | ||
| { | ||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| writer.Write(_texMarker.ToCharArray()); | ||
| if (_version == TRGameVersion.TR5) | ||
| { | ||
| writer.Write((byte)0); | ||
| } | ||
| } | ||
|
|
||
| writer.Write((uint)textures.Count); | ||
|
|
||
| for (int i = 0; i < textures.Count; i++) | ||
| { | ||
| Write(writer, textures[i], i); | ||
| } | ||
| } | ||
|
|
||
| public void Write(TRLevelWriter writer, List<TRAnimatedTexture> textures) | ||
| { | ||
| List<ushort> data = new() | ||
| { | ||
| (ushort)textures.Count | ||
| }; | ||
|
|
||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| // Make sure to put UVRotate mode first. | ||
| textures = new(textures.OrderByDescending(t => t.Mode)); | ||
| } | ||
|
|
||
| byte uvRotate = 0; | ||
| foreach (TRAnimatedTexture texture in textures) | ||
| { | ||
| data.Add((ushort)(texture.Textures.Count - 1)); | ||
| data.AddRange(texture.Textures); | ||
| if (texture.Mode == TRAnimatedTextureMode.UVRotate) | ||
| { | ||
| uvRotate++; | ||
| } | ||
| } | ||
|
|
||
| writer.Write((uint)data.Count); | ||
| writer.Write(data); | ||
|
|
||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| writer.Write(uvRotate); | ||
| } | ||
| } | ||
|
|
||
| private TRObjectTexture Read(TRLevelReader reader, int index) | ||
| { | ||
| TRObjectTexture texture = new() | ||
| { | ||
| BlendingMode = (TRBlendingMode)reader.ReadUInt16() | ||
| }; | ||
|
|
||
| ushort flags = reader.ReadUInt16(); | ||
| texture.Atlas = (ushort)(flags & 0x7FFF); | ||
|
|
||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| texture.IsTriangle = (flags & 0x8000) > 0; | ||
|
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||
| ushort newFlags = reader.ReadUInt16(); | ||
| texture.Target = (newFlags & 0x8000) > 0 ? TRObjectTextureMode.Room : TRObjectTextureMode.Model; | ||
| texture.BumpLevel = (byte)((newFlags & 0x600) >> 9); | ||
| texture.MappingCorrection = (byte)(newFlags & 0x7); | ||
| texture.UnknownFlag = (newFlags & 0x0800) > 0; | ||
| } | ||
| else | ||
| { | ||
| texture.Target = TRObjectTextureMode.Classic; | ||
| } | ||
|
|
||
| texture.Vertices = reader.ReadObectTextureVertices(4); | ||
|
|
||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| uint originalU = reader.ReadUInt32(); | ||
| uint originalV = reader.ReadUInt32(); | ||
| _observer?.OnOrignalUVRead(index, new(originalU, originalV)); | ||
|
|
||
| // Width-1 and Height-1 | ||
| reader.ReadUInt32(); | ||
| reader.ReadUInt32(); | ||
|
|
||
| if (_version == TRGameVersion.TR5) | ||
| { | ||
| // Padding | ||
| reader.ReadUInt16(); | ||
| } | ||
| } | ||
|
|
||
| return texture; | ||
| } | ||
|
|
||
| private void Write(TRLevelWriter writer, TRObjectTexture texture, int index) | ||
| { | ||
| TRBlendingMode blendingMode = texture.BlendingMode; | ||
| if ((blendingMode == TRBlendingMode.AlphaBlending && _version < TRGameVersion.TR3) | ||
| || (blendingMode == TRBlendingMode.ForcedAlpha && _version < TRGameVersion.TR4)) | ||
| { | ||
| blendingMode = TRBlendingMode.AlphaTesting; | ||
| } | ||
|
|
||
| writer.Write((ushort)blendingMode); | ||
|
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||
| ushort flags = texture.Atlas; | ||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| if (texture.IsTriangle) | ||
| { | ||
| flags |= 0x8000; | ||
| } | ||
| writer.Write(flags); | ||
|
|
||
| ushort newFlags = (ushort)(texture.MappingCorrection & 0x7); | ||
| newFlags |= (ushort)((texture.BumpLevel << 9) & 0x600); | ||
| if (texture.Target == TRObjectTextureMode.Room) | ||
| { | ||
| newFlags |= 0x8000; | ||
| } | ||
| if (texture.UnknownFlag) | ||
| { | ||
| newFlags |= 0x0800; | ||
| } | ||
| writer.Write(newFlags); | ||
| } | ||
| else | ||
| { | ||
| writer.Write(flags); | ||
| } | ||
|
|
||
| writer.Write(texture.Vertices); | ||
|
|
||
| if (_version >= TRGameVersion.TR4) | ||
| { | ||
| // Discarded in game, so only written back as OG for tests. | ||
| Tuple<uint, uint> originalUV = _observer?.GetOrignalUV(index) ?? new(0, 0); | ||
| writer.Write(originalUV.Item1); | ||
| writer.Write(originalUV.Item2); | ||
|
|
||
| Size size = texture.Size; | ||
| if (_version == TRGameVersion.TR4) | ||
| { | ||
| writer.Write((uint)(size.Width - 1)); | ||
| writer.Write((uint)(size.Height - 1)); | ||
| } | ||
| else | ||
| { | ||
| writer.Write((uint)((size.Width - 1) << 16)); | ||
| writer.Write((uint)((size.Height - 1) << 16)); | ||
|
|
||
| // Padding | ||
| writer.Write((ushort)0); | ||
| } | ||
| } | ||
| } | ||
| } |
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