public AseLayerChunk(AseFrame frame, AseReader reader)
: base(frame)
{
Flags = (LayerChunkFlags)reader.ReadWORD();
Type = (LayerType)reader.ReadWORD();
ChildLevel = reader.ReadWORD();
// Ignore next two words
reader.ReadWORD();
reader.ReadWORD();
BlendMode = (BlendMode)reader.ReadWORD();
Opacity = reader.ReadBYTE();
if ((frame.AseFile.Header.Flags & HeaderFlags.HasLayerOpacity) == 0)
{
// Assume full opacity
Opacity = 255;
}
// Ignore next three bytes
reader.ReadBYTEs(3);
Name = reader.ReadSTRING();
}
public AseFrameTagEntry(AseReader reader)
{
FromFrame = reader.ReadWORD();
ToFrame = reader.ReadWORD();
LoopAnimationDirection = (LoopAnimationDirection)reader.ReadBYTE();
// Ignore next 8 bytes
reader.ReadBYTEs(8);
ColorRGB = reader.ReadBYTEs(3);
// Ignore a byte
reader.ReadBYTE();
Name = reader.ReadSTRING();
// "OneShot" loop hack
if (Name.StartsWith("[") && Name.EndsWith("]"))
{
Name = Name.Remove(0, 1);
Name = Name.Remove(Name.Length - 1, 1);
IsOneShot = true;
}
else
{
IsOneShot = false;
}
}
public AseDummyChunk(AseFrame frame, AseReader reader, ChunkType type, int size)
: base(frame)
{
m_ChunkType = type;
ChunkSize = size;
Bytes = reader.ReadBYTEs(size);
}
public AseHeader(AseReader reader)
{
FileSize = reader.ReadDWORD();
MagicNumber = reader.ReadWORD();
NumFrames = reader.ReadWORD();
Width = reader.ReadWORD();
Height = reader.ReadWORD();
ColorDepth = reader.ReadColorDepth();
Flags = (HeaderFlags)reader.ReadDWORD();
Speed = reader.ReadWORD();
// Next two dwords are ignored
reader.ReadDWORD();
reader.ReadDWORD();
TransparentIndex = reader.ReadBYTE();
// Next 3 bytes are ignored
reader.ReadBYTEs(3);
NumColors = reader.ReadWORD();
PixelWidth = reader.ReadBYTE();
PixelHeight = reader.ReadBYTE();
// Last 92 bytes are reserved for future use
reader.ReadBYTEs(92);
Debug.Assert(MagicNumber == 0xA5E0);
}
private AseChunk ReadChunk(AseReader reader)
{
uint size = reader.ReadDWORD();
ChunkType type = (ChunkType)reader.ReadWORD();
return(ChunkFactory.ReadChunk(this, type, (int)(size - 6), reader));
}
public AseFrame(AseFile file, AseReader reader)
{
AseFile = file;
NumBytesInFrame = reader.ReadDWORD();
MagicNumber = reader.ReadWORD();
NumChunks = reader.ReadWORD();
FrameDurationMs = reader.ReadWORD();
// Ingore next two bytes
reader.ReadBYTEs(2);
// Later versions of Aseprite may overwrite our number of chunks
var nchunks = reader.ReadDWORD();
if (NumChunks == 0xFFFF && NumChunks < nchunks)
{
NumChunks = nchunks;
}
// Read in old and new chunks
Chunks = Enumerable.Repeat <AseChunk>(null, (int)NumChunks).ToList();
for (int i = 0; i < NumChunks; i++)
{
Chunks[i] = ReadChunk(reader);
}
Debug.Assert(MagicNumber == 0xF1FA);
}
public AseFile(AseReader reader)
{
Header = new AseHeader(reader);
Frames = Enumerable.Repeat<AseFrame>(null, Header.NumFrames).ToList();
for (int i = 0; i < Header.NumFrames; i++)
{
Frames[i] = new AseFrame(this, reader);
}
}
public static AseChunk ReadChunk(AseFrame frame, ChunkType type, int size, AseReader reader)
{
var pos = reader.Position;
AseChunk chunk = null;
switch (type)
{
// Chunk types we care about
case ChunkType.Palette:
chunk = new AsePaletteChunk(frame, reader);
break;
case ChunkType.Layer:
chunk = new AseLayerChunk(frame, reader);
break;
case ChunkType.Cel:
chunk = new AseCelChunk(frame, reader, size);
break;
case ChunkType.ColorProfile:
chunk = new AseColorProfileChunk(frame, reader);
break;
case ChunkType.FrameTags:
chunk = new AseFrameTagsChunk(frame, reader);
break;
case ChunkType.Slice:
chunk = new AseSliceChunk(frame, reader);
break;
case ChunkType.UserData:
chunk = new AseUserDataChunk(frame, reader);
break;
// Chunk types we don't care about
case ChunkType.OldPalette:
chunk = new AseDummyChunk(frame, reader, type, size);
break;
// Chunk types we haven't handled yet. Indicates a bug that should be fixed.
default:
chunk = new AseDummyChunk(frame, reader, type, size);
Debug.LogErrorFormat("Unhandled chunk type: {0}", ((ushort)type).ToString("X4"));
break;
}
// Check that we read the right amount of bytes
Assert.IsTrue((reader.Position - pos) == size, string.Format("Chunk {0} read {1} bytes but we were expected {2} bytes read", type, reader.Position - pos, size));
reader.LastChunk = chunk;
return(chunk);
}
public AsePaletteEntry(AseReader reader)
{
Flags = reader.ReadWORD();
Red = reader.ReadBYTE();
Green = reader.ReadBYTE();
Blue = reader.ReadBYTE();
Alpha = reader.ReadBYTE();
if (HasName)
{
Name = reader.ReadSTRING();
}
}
public AseFrameTagsChunk(AseFrame frame, AseReader reader)
: base(frame)
{
NumTags = reader.ReadWORD();
// Ignore next 8 bytes
reader.ReadBYTEs(8);
Entries = Enumerable.Repeat <AseFrameTagEntry>(null, NumTags).ToList();
for (int i = 0; i < (int)NumTags; i++)
{
Entries[i] = new AseFrameTagEntry(reader);
}
}
public AsePaletteChunk(AseFrame frame, AseReader reader)
: base(frame)
{
PaletteSize = (int)reader.ReadDWORD();
FirstIndex = (int)reader.ReadDWORD();
LastIndex = (int)reader.ReadDWORD();
// Next 8 bytes are ignored
reader.ReadBYTEs(8);
Entries = Enumerable.Repeat <AsePaletteEntry>(null, LastIndex + 1).ToList();
for (int i = FirstIndex; i <= LastIndex; i++)
{
Entries[i] = new AsePaletteEntry(reader);
}
}
public AseSliceChunk(AseFrame frame, AseReader reader)
: base(frame)
{
NumSliceKeys = reader.ReadDWORD();
Flags = (SliceFlags)reader.ReadDWORD();
// Ignore next dword
reader.ReadDWORD();
Name = reader.ReadSTRING();
Entries = Enumerable.Repeat <AseSliceEntry>(null, (int)NumSliceKeys).ToList();
for (int i = 0; i < (int)NumSliceKeys; i++)
{
Entries[i] = new AseSliceEntry(reader, Flags);
}
}
public AseColorProfileChunk(AseFrame frame, AseReader reader)
: base(frame)
{
ColorProfileType = (ColorProfileType)reader.ReadWORD();
ColorProfileFlags = (ColorProfileFlags)reader.ReadWORD();
GammaFixed = reader.ReadDWORD();
// Next 8 bytes are reserved
reader.ReadBYTEs(8);
// fixit - what to do with color profile data?
if (ColorProfileType == ColorProfileType.EmbeddedICC)
{
var length = (int)reader.ReadDWORD();
reader.ReadBYTEs(length);
}
}
public override void OnImportAsset(AssetImportContext ctx)
{
m_Errors.Clear();
#if UNITY_2018_1_OR_NEWER
m_Context = ctx;
using (var reader = new AseReader(ctx.assetPath))
{
m_AseFile = new AseFile(reader);
m_AseFile.VisitContents(this);
}
#else
string msg = string.Format("Aesprite2Unity requires Unity 2018.3 or later. You are using {0}", Application.unityVersion);
m_Errors.Add(msg);
Debug.LogError(msg);
#endif
}
public AseColorProfileChunk(AseFrame frame, AseReader reader)
: base(frame)
{
ColorProfileType = (ColorProfileType)reader.ReadWORD();
ColorProfileFlags = (ColorProfileFlags)reader.ReadWORD();
GammaFixed = reader.ReadDWORD();
// Next 8 bytes are reserved
reader.ReadBYTEs(8);
// Do we need to do anything with color profile data?
// For now, just keep on truckin'
if (ColorProfileType == ColorProfileType.EmbeddedICC)
{
var length = (int)reader.ReadDWORD();
reader.ReadBYTEs(length);
}
}
public AseCelChunk(AseFrame frame, AseReader reader, int size)
: base(frame)
{
// Keep track of read position
var pos = reader.Position;
LayerIndex = reader.ReadWORD();
PositionX = reader.ReadSHORT();
PositionY = reader.ReadSHORT();
Opacity = reader.ReadBYTE();
CelType = (CelType)reader.ReadWORD();
// Ignore next 7 bytes
reader.ReadBYTEs(7);
if (CelType == CelType.Raw)
{
Width = reader.ReadWORD();
Height = reader.ReadWORD();
var bytesRead = reader.Position - pos;
PixelBytes = reader.ReadBYTEs(size - bytesRead);
}
else if (CelType == CelType.Linked)
{
FramePositionLink = reader.ReadWORD();
// Get a reference to our linked cell. It should be in a previous frame with a matching layer index.
Debug.Assert(Frame.AseFile.Frames.Count > FramePositionLink);
LinkedCel = Frame.AseFile.Frames[FramePositionLink].Chunks.OfType <AseCelChunk>().FirstOrDefault(c => c.LayerIndex == LayerIndex);
Debug.Assert(LinkedCel != null);
}
else if (CelType == CelType.CompressedImage)
{
Width = reader.ReadWORD();
Height = reader.ReadWORD();
var bytesRead = reader.Position - pos;
var compressed = reader.ReadBYTEs(size - bytesRead);
PixelBytes = ZlibDeflate(compressed);
}
}
public AseSliceEntry(AseReader reader, SliceFlags flags)
{
FrameNumber = reader.ReadDWORD();
OriginX = reader.ReadLONG();
OriginY = reader.ReadLONG();
Width = reader.ReadDWORD();
Height = reader.ReadDWORD();
if ((flags & SliceFlags.Is9PatchSlice) != 0)
{
CenterX = reader.ReadLONG();
CenterY = reader.ReadLONG();
CenterWidth = reader.ReadDWORD();
CenterHeight = reader.ReadDWORD();
}
if ((flags & SliceFlags.HasPivotInformation) != 0)
{
PivotX = reader.ReadLONG();
PivotY = reader.ReadLONG();
}
}
public AseUserDataChunk(AseFrame frame, AseReader reader)
: base(frame)
{
Flags = (UserDataFlags)reader.ReadDWORD();
if ((Flags & UserDataFlags.HasText) != 0)
{
Text = reader.ReadSTRING();
}
if ((Flags & UserDataFlags.HasColor) != 0)
{
ColorRGBA = reader.ReadBYTEs(4);
}
// Place the user data in the last chunk
if (reader.LastChunk != null)
{
reader.LastChunk.UserText = Text;
reader.LastChunk.UserColor = ColorRGBA;
}
}