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Yukai Li 2021-02-16 01:04:29 -07:00
commit 0f86b0434b
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63
LibDgf/Aqualead/Texture/AlTexture.cs Normal file
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using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
namespace LibDgf.Aqualead.Texture
{
public class AlTexture
{
public AlTextureFlags Flags { get; set; }
public List<AlTextureEntry> ChildTextures { get; set; } = new List<AlTextureEntry>();
public short Width { get; set; }
public short Height { get; set; }
public uint IndirectReference { get; set; }
public byte[] ImageData { get; set; }
public void Read(BinaryReader br)
{
var baseOffset = br.BaseStream.Position;
if (new string(br.ReadChars(4)) != "ALTX")
throw new InvalidDataException("Not an Aqualead texture.");
bool isMultitexture = br.ReadBoolean();
Flags = (AlTextureFlags)br.ReadByte();
ushort numTextures = br.ReadUInt16();
uint imgOffset = br.ReadUInt32();
ushort[] entryOffsets = new ushort[numTextures];
for (int i = 0; i < numTextures; ++i)
{
entryOffsets[i] = br.ReadUInt16();
}
ChildTextures.Clear();
uint entryOffset = 0;
for (int i = 0; i < numTextures; ++i)
{
entryOffset += entryOffsets[i];
br.BaseStream.Seek(baseOffset + entryOffset, SeekOrigin.Begin);
AlTextureEntry entry = new AlTextureEntry();
entry.Read(br, isMultitexture);
ChildTextures.Add(entry);
}
if ((Flags & AlTextureFlags.IsSpecial) != 0)
{
if ((Flags & AlTextureFlags.IsIndirect) != 0)
{
IndirectReference = br.ReadUInt32();
return;
}
else if ((Flags & AlTextureFlags.IsOverrideDimensions) != 0)
{
Width = br.ReadInt16();
Height = br.ReadInt16();
}
}
br.BaseStream.Seek(baseOffset + imgOffset, SeekOrigin.Begin);
ImageData = br.ReadBytes((int)(br.BaseStream.Length - br.BaseStream.Position));
}
}
}