public void read(Reader reader)
{
reader.ReadInt16(); // "BM"
reader.ReadInt32(); // totalFileSize
reader.ReadInt32(); // Unused
int pixelPos = reader.ReadInt32();
reader.seek(14 + 4, System.IO.SeekOrigin.Begin);
width = reader.ReadByte();
width |= reader.ReadByte() << 8;
width |= reader.ReadByte() << 16;
width |= reader.ReadByte() << 24;
height = reader.ReadByte();
height |= reader.ReadByte() << 8;
height |= reader.ReadByte() << 16;
height |= reader.ReadByte() << 24;
reader.BaseStream.Position += sizeof(ushort);
bool indexed = reader.ReadUInt16() <= 8; //bpp
if (!indexed)
{
throw new Exception("RSDK-Formatted Bitmap files must be indexed!");
}
reader.BaseStream.Position += 4 * sizeof(int);
int clrCount = reader.ReadInt32(); // how many colours used
reader.seek(14 + 40, System.IO.SeekOrigin.Begin);
for (int c = 0; c < clrCount; c++)
{
palette[c].B = reader.ReadByte();
palette[c].G = reader.ReadByte();
palette[c].R = reader.ReadByte();
reader.ReadByte(); // unused
}
long expectedPixelPos = (reader.BaseStream.Length - height * width);
if (pixelPos != expectedPixelPos)
{
throw new Exception("RSDK-Formatted Bitmap files must end with the pixel data!");
}
// This is how RSDK does it but there's a small chance it could maybe be wrong
reader.seek(expectedPixelPos, System.IO.SeekOrigin.Begin);
pixels = new byte[width * height];
int gfxPos = width * (height - 1);
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
pixels[gfxPos++] = reader.ReadByte();
}
gfxPos -= 2 * width;
}
reader.Close();
}