/// <summary>
/// Decrypts a spriteframe's rowheader.
/// </summary>
/// <param name="P">The rowheader that was read from the spriteframe's data.</param>
/// <returns></returns>
private EncryptedRowHeader GetDecryptedValues(ushort P)
{
EncryptedRowHeader RowHeader = new EncryptedRowHeader();
// 0xe000 = 1110 0000 0000 0000 : high order 3 bits
// 0x1fff = 0001 1111 1111 1111 : low order 13 bits
// 0xd = shift 13 bits to the right
// as documented, 0xa000 is the stop value, with value 5 in the high order 3 bits ->
// 0xa000 = 1010 0000 0000 0000 little endian
// high order 3 bits are 101, or value 5
RowHeader.Code = ((P & 0xe000) << 0xd);
RowHeader.Count = (P & 0x1fff);
return(RowHeader);
}
public SpriteParser(byte[] ChunkData, List <PaletteMap> PMaps, int ChunkID)
{
m_ChunkID = ChunkID;
MemoryStream MemStream = new MemoryStream(ChunkData);
BinaryReader Reader = new BinaryReader(MemStream);
Reader.BaseStream.Position = INDEX_SPRID;
m_ID = Reader.ReadByte();
Reader.BaseStream.Position = INDEX_SPRVERSION;
m_Version = Reader.ReadUInt32();
if (m_Version != 1000 && m_Version != 1001)
{
throw new Exception("Version was: " + m_Version);
}
m_FrameCount = Reader.ReadUInt32();
if (m_Version == 1000)
{
m_PaletteID = Reader.ReadUInt32();
}
bool PaletteFound = false;
foreach (PaletteMap Map in PMaps)
{
if (Map.ID == m_PaletteID)
{
m_PMap = Map;
PaletteFound = true;
}
}
//This is guesswork, but when the PaletteID is 1, it seems to typically indicate
//that there's only one palette to choose from...
if (m_PaletteID == 1)
{
m_PMap = PMaps[0];
PaletteFound = true;
}
if (!PaletteFound)
{
throw new Exception("No palette found!");
}
for (int i = 0; i < m_FrameCount; i++)
{
SpriteFrame Frame = new SpriteFrame();
Reader.BaseStream.Position = INDEX_SPROFFSETTABLE + 4 * i;
Reader.BaseStream.Position = Reader.ReadUInt32() + INDEX_SPRVERSION;
Frame.Width = Reader.ReadUInt16();
Frame.Height = Reader.ReadUInt16();
Frame.Flag = Reader.ReadUInt16();
//Zero value skipped.
Reader.BaseStream.Position += 2;
Frame.PaletteID = Reader.ReadUInt16();
Frame.PalMap = PMaps[0];
foreach (PaletteMap PMap in PMaps)
{
if (PMap.ID == m_PaletteID)
{
Frame.PalMap = PMap;
}
}
Frame.TransparentPixel = m_PMap.GetColorAtIndex(Reader.ReadUInt16());
Frame.XLocation = Reader.ReadUInt16();
Frame.YLocation = Reader.ReadUInt16();
Frame.Init();
EncryptedRowHeader RowHeader = new EncryptedRowHeader();
int RowID = 0;
for (int j = 0; j < Frame.Height; j++)
{
long InitPos = Reader.BaseStream.Position;
RowHeader = GetDecryptedValues(Reader.ReadUInt16());
if (RowHeader.Code == 0)
{
//byte[] RowSegmentData = Reader.ReadBytes(RowHeader.Count - 2);
ReadRowSegment(Reader, RowID, ref Frame);
Reader.BaseStream.Position = InitPos + RowHeader.Count;
RowID++;
}
else if (RowHeader.Code == 4)
{
RowID += RowHeader.Count;
}
else if (RowHeader.Code == 5)
{
break;
}
}
m_Frames.Add(Frame);
}
Reader.Close();
}
public SpriteParser(byte[] ChunkData, List<PaletteMap> PMaps, int ChunkID)
{
m_ChunkID = ChunkID;
MemoryStream MemStream = new MemoryStream(ChunkData);
BinaryReader Reader = new BinaryReader(MemStream);
Reader.BaseStream.Position = INDEX_SPRID;
m_ID = Reader.ReadByte();
Reader.BaseStream.Position = INDEX_SPRVERSION;
m_Version = Reader.ReadUInt32();
if (m_Version != 1000 && m_Version != 1001)
throw new Exception("Version was: " + m_Version);
m_FrameCount = Reader.ReadUInt32();
if (m_Version == 1000)
m_PaletteID = Reader.ReadUInt32();
bool PaletteFound = false;
foreach (PaletteMap Map in PMaps)
{
if (Map.ID == m_PaletteID)
{
m_PMap = Map;
PaletteFound = true;
}
}
//This is guesswork, but when the PaletteID is 1, it seems to typically indicate
//that there's only one palette to choose from...
if (m_PaletteID == 1)
{
m_PMap = PMaps[0];
PaletteFound = true;
}
if (!PaletteFound)
throw new Exception("No palette found!");
for (int i = 0; i < m_FrameCount; i++)
{
SpriteFrame Frame = new SpriteFrame();
Reader.BaseStream.Position = INDEX_SPROFFSETTABLE + 4 * i;
Reader.BaseStream.Position = Reader.ReadUInt32() + INDEX_SPRVERSION;
Frame.Width = Reader.ReadUInt16();
Frame.Height = Reader.ReadUInt16();
Frame.Flag = Reader.ReadUInt16();
//Zero value skipped.
Reader.BaseStream.Position += 2;
Frame.PaletteID = Reader.ReadUInt16();
Frame.PalMap = PMaps[0];
foreach (PaletteMap PMap in PMaps)
{
if (PMap.ID == m_PaletteID)
Frame.PalMap = PMap;
}
Frame.TransparentPixel = m_PMap.GetColorAtIndex(Reader.ReadUInt16());
Frame.XLocation = Reader.ReadUInt16();
Frame.YLocation = Reader.ReadUInt16();
Frame.Init();
EncryptedRowHeader RowHeader = new EncryptedRowHeader();
int RowID = 0;
for (int j = 0; j < Frame.Height; j++)
{
long InitPos = Reader.BaseStream.Position;
RowHeader = GetDecryptedValues(Reader.ReadUInt16());
if (RowHeader.Code == 0)
{
//byte[] RowSegmentData = Reader.ReadBytes(RowHeader.Count - 2);
ReadRowSegment(Reader, RowID, ref Frame);
Reader.BaseStream.Position = InitPos + RowHeader.Count;
RowID++;
}
else if (RowHeader.Code == 4)
{
RowID += RowHeader.Count;
}
else if (RowHeader.Code == 5)
{
break;
}
}
m_Frames.Add(Frame);
}
Reader.Close();
}
/// <summary>
/// Decrypts a spriteframe's rowheader.
/// </summary>
/// <param name="P">The rowheader that was read from the spriteframe's data.</param>
/// <returns></returns>
private EncryptedRowHeader GetDecryptedValues(ushort P)
{
EncryptedRowHeader RowHeader = new EncryptedRowHeader();
// 0xe000 = 1110 0000 0000 0000 : high order 3 bits
// 0x1fff = 0001 1111 1111 1111 : low order 13 bits
// 0xd = shift 13 bits to the right
// as documented, 0xa000 is the stop value, with value 5 in the high order 3 bits ->
// 0xa000 = 1010 0000 0000 0000 little endian
// high order 3 bits are 101, or value 5
RowHeader.Code = ((P & 0xe000) << 0xd);
RowHeader.Count = (P & 0x1fff);
return RowHeader;
}
