void ReadIconAndTitle(int iconAndTitleOffset)
{
if (iconAndTitleOffset == 0)
{
return;
}
// Read the palette.
Reader.BaseStream.Position = iconAndTitleOffset + 0x220;
Color[] colors = new Color[16];
for (int index = 0; index < 16; index++)
{
Reader.ReadNDSColor(forceTransparent: index == 0);
}
PaletteAsset palette = new PaletteAsset(Manager, "Icon palette", colors);
// Read the icon.
Reader.BaseStream.Position = iconAndTitleOffset + 0x20;
Vector2i iconSize = new Vector2i(32, 32);
Vector2i tileSize = iconSize / 8;
int[] indices = new int[iconSize.X * iconSize.Y];
for (Vector2i tile = Vector2i.Zero; tile.Y < tileSize.Y; tile.Y++)
{
for (tile.X = 0; tile.X < tileSize.X; tile.X++)
{
for (Vector2i pixel = Vector2i.Zero; pixel.Y < 8; pixel.Y++)
{
for (pixel.X = 0; pixel.X < 4; pixel.X++)
{
int x = pixel.X + tile.X * 4;
int y = pixel.Y + tile.Y * 8;
int offset = x + y * iconSize.X;
byte pair = Reader.ReadByte();
indices[offset + 0] = pair & 0x0F;
indices[offset + 1] = pair >> 4;
}
}
}
}
Icon = new IndexedTextureAsset(Manager, "Icon", palette, iconSize.X, iconSize.Y, indices);
// Read the title.
Name = Reader.ReadStringzAt(iconAndTitleOffset + 0x240, Encoding.Unicode);
TitleEnglish = Reader.ReadStringzAt(iconAndTitleOffset + 0x340, Encoding.Unicode);
TitleFrench = Reader.ReadStringzAt(iconAndTitleOffset + 0x440, Encoding.Unicode);
TitleGerman = Reader.ReadStringzAt(iconAndTitleOffset + 0x540, Encoding.Unicode);
TitleItalian = Reader.ReadStringzAt(iconAndTitleOffset + 0x640, Encoding.Unicode);
TitleSpanish = Reader.ReadStringzAt(iconAndTitleOffset + 0x740, Encoding.Unicode);
}
internal Image(AssetManager manager, BinaryReader reader, string name, Asset context)
: base(manager, name)
{
using (reader) {
int height = reader.ReadByte();
int width = reader.ReadByte() * 8;
reader.RequireZeroes(4);
int frameCount = reader.ReadUInt16();
if (frameCount == 0)
{
throw new InvalidDataException();
}
byte baseColorIndex = reader.ReadByte();
int colorCount = reader.ReadByte() + 1;
// Need to initialize palette.
Color[] colors = new Color[256];
for (int index = 0; index < 16; index++)
{
colors[index] = Raster.DefaultEgaColors[index];
}
for (int index = 0; index < colorCount; index++)
{
colors[index + baseColorIndex] = Color.FromArgb(reader.ReadByte() * 255 / 63, reader.ReadByte() * 255 / 63, reader.ReadByte() * 255 / 63);
}
PaletteAsset palette = new PaletteAsset(Manager, Name + " palette", colors);
Unknowns.ReadBytes(reader, (colorCount + 1) / 2); // EGA color map, two colours per byte.
Unknowns.ReadBytes(reader, 4);
int remaining = checked ((int)(reader.BaseStream.Length - reader.BaseStream.Position));
if (remaining == width * height * frameCount + 28)
{
Unknowns.ReadBytes(reader, 28);
remaining -= 28;
}
if (remaining != width * height * frameCount || (height != 0 && remaining % height != 0))
{
throw new InvalidDataException("Expected file length is not correct.");
}
int[] indices = new int[width * height];
if (width == 0 || height == 0)
{
AddChild(palette);
}
else
{
for (int index = 0; index < frameCount; index++)
{
reader.ReadBytesAsInt32(indices, 0, indices.Length);
var resource = new IndexedTextureAsset(Manager, "Frame " + index, palette, width, height, indices);
AddChild(resource);
}
}
// Hack for "over.dax" files to use their multiple palettes.
if (context is ArchiveRecord && ((ArchiveRecord)context).Id >= 51 && string.Equals(Path.GetFileName(context.Parent.Name), "over.dax", StringComparison.InvariantCultureIgnoreCase))
{
Archive archive = (Archive)context.Parent;
for (int id = 1; id <= 4; id++)
{
palette = (PaletteAsset)archive.RecordsById[id].Contents.Children[0];
var frame = new IndexedTextureAsset(Manager, "Palette " + id, palette, width, height, indices);
AddChild(frame);
}
}
}
}
