private static FileFormats CheckSprFormats(Stream str)
{
FileFormats format;
long oldPos = str.Position;
ColorPalette pal = new Bitmap(50, 50, PixelFormat.Format8bppIndexed).Palette;
IndexedBitmap ibmp = new IndexedBitmap(pal);
if (ibmp.SetBitmapFromRleStream(str, FileFormats.SpriteSpr) != null)
{
format = FileFormats.SpriteSpr;
}
else
{
str.Position = oldPos;
ibmp = new IndexedBitmap(pal);
if (ibmp.SetBitmapFromRleStream(str, FileFormats.ResIdxFramesSpr) != null)
{
format = FileFormats.ResIdxFramesSpr;
}
else
{
format = FileFormats._Unknown;
}
}
str.Position = oldPos;
return(format);
}
/// <summary>
/// Creates a new <see cref="SkaaSprite"/> from a stream of SPR-formatted data
/// </summary>
/// <param name="str">The stream to read the SPR data from</param>
/// <param name="pal">The <see cref="ColorPalette"/> to apply to the sprite's images</param>
/// <returns>A new <see cref="SkaaSprite"/></returns>
/// <remarks>
/// The original game code for reading SPR files can be found <c>ResourceDb::init_imported()</c>
/// in src/ORESDB.cpp around line 72. The <c>resName</c> will be "sprite\\NAME.SPR". SPR files are
/// are considered <c>FLAT</c> by 7KAA.
/// </remarks>
public static SkaaSprite FromSprStream(Stream str, ColorPalette pal)
{
SkaaSprite spr = new SkaaSprite();
if (str is FileStream)
spr.SpriteId = Path.GetFileNameWithoutExtension(((FileStream)str).Name);
try
{
while (str.Position < str.Length)
{
IndexedBitmap iBmp = new IndexedBitmap(pal);
SkaaSpriteFrame sf = new SkaaSpriteFrame(spr);
sf.IndexedBitmap = iBmp;
sf.BitmapOffset = str.Position;
iBmp.SetBitmapFromRleStream(str, FileFormats.SpriteSpr);
spr.Frames.Add(sf);
}
}
catch (Exception e)
{
Logger.TraceEvent(TraceEventType.Error, 0, $"Failed to load sprite: {spr.SpriteId} (Exception: {e.Message})");
Debugger.Break();
}
return spr;
}
private static FileFormats CheckSprFormats(Stream str)
{
FileFormats format;
long oldPos = str.Position;
ColorPalette pal = new Bitmap(50, 50, PixelFormat.Format8bppIndexed).Palette;
IndexedBitmap ibmp = new IndexedBitmap(pal);
if (ibmp.SetBitmapFromRleStream(str, FileFormats.SpriteSpr) != null)
format = FileFormats.SpriteSpr;
else
{
str.Position = oldPos;
ibmp = new IndexedBitmap(pal);
if (ibmp.SetBitmapFromRleStream(str, FileFormats.ResIdxFramesSpr) != null)
format = FileFormats.ResIdxFramesSpr;
else
format = FileFormats._Unknown;
}
str.Position = oldPos;
return format;
}
/// <summary>
/// Reads all the frame data from the specified file, of type <see cref="FileFormats.ResIdxMultiBmp"/>
/// </summary>
/// <param name="filepath">The path to the file</param>
/// <param name="pal">The <see cref="ColorPalette"/> to use in building the frame's image</param>
/// <returns>
/// A <see cref="Tuple{T1, T2}"/> where <c>T1</c> is the new <see cref="SkaaSprite"/> and <c>T2</c> is
/// the <see cref="DataTable"/> read from the ResIdx header.
/// </returns>
/// <remarks>
/// This differs from loading an SPR file in that the file contains the <see cref="SkaaFrame"/> data
/// directly in its header rather than in the standard game set (see <see cref="GameSetFile"/>. The
/// <see cref="DataTable"/> only has fields for FrameName and FrameOffset; any other data is stored
/// elsewhere, generally in DBF (dBaseIII) files that may or may not be in the standard game set.
/// </remarks>
private static Tuple<SkaaSprite, DataTable> ReadFrames(string filepath, ColorPalette pal, bool offsetsOnly)
{
SkaaSprite spr = new SkaaSprite();
DataTable dt = new DataTable();
dt.AddDataSource(Path.GetFileName(filepath));
dt.Columns.Add(new DataColumn() { DataType = typeof(string), ColumnName = SkaaGameDataLib.Util.DataRowExtensions.ResIdxFrameNameColumn });
dt.Columns.Add(new DataColumn() { DataType = typeof(uint), ColumnName = SkaaGameDataLib.Util.DataRowExtensions.ResIdxFrameOffsetColumn });
using (FileStream fs = new FileStream(filepath, FileMode.Open))
{
//Read the file definitions from the ResIdx header.
Dictionary<string, uint> dic = ResourceDefinitionReader.ReadDefinitions(fs, offsetsOnly);
spr.SpriteId = Path.GetFileNameWithoutExtension(filepath);
dt.TableName = spr.SpriteId;
foreach (string key in dic.Keys)
{
SkaaSpriteFrame sf = new SkaaSpriteFrame(null);
sf.BitmapOffset = dic[key];
fs.Position = sf.BitmapOffset;
sf.Name = key;
IndexedBitmap iBmp = new IndexedBitmap(pal);
sf.IndexedBitmap = iBmp;
iBmp.SetBitmapFromRleStream(fs, FileFormats.ResIdxFramesSpr);
spr.Frames.Add(sf);
DataRow row = dt.NewRow();
dt.Rows.Add(row);
row.BeginEdit();
row[SkaaGameDataLib.Util.DataRowExtensions.ResIdxFrameNameColumn] = key;
row[SkaaGameDataLib.Util.DataRowExtensions.ResIdxFrameOffsetColumn] = dic[key];
row.AcceptChanges();
}
}
return new Tuple<SkaaSprite, DataTable>(spr, dt);
}