//set fileID to -1 if all replacers are for this .assets file but don't have the fileID set to the same one
//typeMeta is used to add the type information (hash and type fields) for format >= 0x10 if necessary
public void Write(AssetsFileWriter writer, ulong filePos, List <AssetsReplacer> replacers, uint fileID, ClassDatabaseFile typeMeta = null)
{
header.Write(writer);
for (int i = 0; i < replacers.Count; i++)
{
AssetsReplacer replacer = replacers[i];
if (!typeTree.unity5Types.Any(t => t.classId == replacer.GetClassID()))
{
Type_0D type = new Type_0D()
{
classId = replacer.GetClassID(),
unknown16_1 = 0,
scriptIndex = 0xFFFF,
typeHash1 = 0,
typeHash2 = 0,
typeHash3 = 0,
typeHash4 = 0,
typeFieldsExCount = 0,
stringTableLen = 0,
stringTable = ""
};
typeTree.unity5Types.Concat(new Type_0D[] { type });
}
}
typeTree.Write(writer, header.format);
int initialSize = (int)(AssetFileInfo.GetSize(header.format) * AssetCount);
int newSize = (int)(AssetFileInfo.GetSize(header.format) * (AssetCount + replacers.Count));
int appendedSize = newSize - initialSize;
reader.Position = AssetTablePos;
List <AssetFileInfo> originalAssetInfos = new List <AssetFileInfo>();
List <AssetFileInfo> assetInfos = new List <AssetFileInfo>();
List <AssetsReplacer> currentReplacers = replacers.ToList();
uint currentOffset = 0;
//-write all original assets, modify sizes if needed and skip those to be removed
for (int i = 0; i < AssetCount; i++)
{
AssetFileInfo info = new AssetFileInfo();
info.Read(header.format, reader);
originalAssetInfos.Add(info);
AssetFileInfo newInfo = new AssetFileInfo()
{
index = info.index,
curFileOffset = currentOffset,
curFileSize = info.curFileSize,
curFileTypeOrIndex = info.curFileTypeOrIndex,
inheritedUnityClass = info.inheritedUnityClass,
scriptIndex = info.scriptIndex,
unknown1 = info.unknown1
};
AssetsReplacer replacer = currentReplacers.FirstOrDefault(n => n.GetPathID() == newInfo.index);
if (replacer != null)
{
currentReplacers.Remove(replacer);
if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_AddOrModify)
{
int classIndex;
if (replacer.GetMonoScriptID() == 0xFFFF)
{
classIndex = typeTree.unity5Types.FindIndex(t => t.classId == replacer.GetClassID());
}
else
{
classIndex = typeTree.unity5Types.FindIndex(t => t.classId == replacer.GetClassID() && t.scriptIndex == replacer.GetMonoScriptID());
}
newInfo = new AssetFileInfo()
{
index = replacer.GetPathID(),
curFileOffset = currentOffset,
curFileSize = (uint)replacer.GetSize(),
curFileTypeOrIndex = classIndex,
inheritedUnityClass = (ushort)replacer.GetClassID(), //for older unity versions
scriptIndex = replacer.GetMonoScriptID(),
unknown1 = 0
};
}
else if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_Remove)
{
continue;
}
}
currentOffset += newInfo.curFileSize;
uint pad = 8 - (currentOffset % 8);
if (pad != 8)
{
currentOffset += pad;
}
assetInfos.Add(newInfo);
}
//-write new assets
while (currentReplacers.Count > 0)
{
AssetsReplacer replacer = currentReplacers.First();
if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_AddOrModify)
{
int classIndex;
if (replacer.GetMonoScriptID() == 0xFFFF)
{
classIndex = typeTree.unity5Types.FindIndex(t => t.classId == replacer.GetClassID());
}
else
{
classIndex = typeTree.unity5Types.FindIndex(t => t.classId == replacer.GetClassID() && t.scriptIndex == replacer.GetMonoScriptID());
}
AssetFileInfo info = new AssetFileInfo()
{
index = replacer.GetPathID(),
curFileOffset = currentOffset,
curFileSize = (uint)replacer.GetSize(),
curFileTypeOrIndex = classIndex,
inheritedUnityClass = (ushort)replacer.GetClassID(),
scriptIndex = replacer.GetMonoScriptID(),
unknown1 = 0
};
currentOffset += info.curFileSize;
uint pad = 8 - (currentOffset % 8);
if (pad != 8)
{
currentOffset += pad;
}
assetInfos.Add(info);
}
currentReplacers.Remove(replacer);
}
writer.Write(assetInfos.Count);
writer.Align();
for (int i = 0; i < assetInfos.Count; i++)
{
assetInfos[i].Write(header.format, writer);
}
preloadTable.Write(writer);
dependencies.Write(writer);
//temporary fix for secondarytypecount and friends
if (header.format >= 14)
{
writer.Write(0); //secondaryTypeCount
writer.Write((byte)0); //unknownString length
}
uint metadataSize = (uint)writer.Position - 0x14;
//-for padding only. if all initial data before assetData is more than 0x1000, this is skipped
while (writer.Position < 0x1000 /*header.offs_firstFile*/)
{
writer.Write((byte)0x00);
}
writer.Align16();
uint offs_firstFile = (uint)writer.Position;
for (int i = 0; i < assetInfos.Count; i++)
{
AssetFileInfo info = assetInfos[i];
AssetsReplacer replacer = replacers.FirstOrDefault(n => n.GetPathID() == info.index);
if (replacer != null)
{
if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_AddOrModify)
{
replacer.Write(writer);
if (i != assetInfos.Count - 1)
{
writer.Align8();
}
}
else if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_Remove)
{
continue;
}
}
else
{
AssetFileInfo originalInfo = originalAssetInfos.FirstOrDefault(n => n.index == info.index);
if (originalInfo != null)
{
reader.Position = header.firstFileOffset + originalInfo.curFileOffset;
byte[] assetData = reader.ReadBytes((int)originalInfo.curFileSize);
writer.Write(assetData);
if (i != assetInfos.Count - 1)
{
writer.Align8();
}
}
}
}
header.firstFileOffset = offs_firstFile;
long fileSizeMarker = writer.Position;
reader.Position = header.firstFileOffset;
writer.Position = 0;
header.metadataSize = metadataSize;
header.fileSize = (uint)fileSizeMarker;
header.Write(writer);
}
//set fileID to -1 if all replacers are for this .assets file but don't have the fileID set to the same one
//typeMeta is used to add the type information (hash and type fields) for format >= 0x10 if necessary
public ulong Write(AssetsFileWriter writer, ulong filePos, AssetsReplacer[] pReplacers, uint fileID, ClassDatabaseFile typeMeta = null)
{
header.Write(writer.Position, writer);
for (int i = 0; i < pReplacers.Length; i++)
{
AssetsReplacer replacer = pReplacers[i];
if (!typeTree.pTypes_Unity5.Any(t => t.classId == replacer.GetClassID()))
{
Type_0D type = new Type_0D()
{
classId = replacer.GetClassID(),
unknown16_1 = 0,
scriptIndex = 0xFFFF,
unknown5 = 0,
unknown6 = 0,
unknown7 = 0,
unknown8 = 0,
typeFieldsExCount = 0,
stringTableLen = 0,
pStringTable = ""
};
typeTree.pTypes_Unity5.Concat(new Type_0D[] { type });
}
}
typeTree.Write(writer.Position, writer, header.format);
int initialSize = (int)(AssetFileInfo.GetSize(header.format) * AssetCount);
int newSize = (int)(AssetFileInfo.GetSize(header.format) * (AssetCount + pReplacers.Length));
int appendedSize = newSize - initialSize;
reader.Position = AssetTablePos;
List <AssetFileInfo> originalAssetInfos = new List <AssetFileInfo>();
List <AssetFileInfo> assetInfos = new List <AssetFileInfo>();
List <AssetsReplacer> currentReplacers = pReplacers.ToList();
uint currentOffset = 0;
//-write all original assets, modify sizes if needed and skip those to be removed
for (int i = 0; i < AssetCount; i++)
{
AssetFileInfo info = new AssetFileInfo();
info.Read(header.format, reader.Position, reader, reader.bigEndian);
originalAssetInfos.Add(info);
AssetsReplacer replacer = currentReplacers.FirstOrDefault(n => n.GetPathID() == info.index);
if (replacer != null)
{
if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_AddOrModify)
{
int classIndex = Array.FindIndex(typeTree.pTypes_Unity5, t => t.classId == replacer.GetClassID());
info = new AssetFileInfo()
{
index = replacer.GetPathID(),
offs_curFile = currentOffset,
curFileSize = (uint)classIndex,
curFileTypeOrIndex = (uint)replacer.GetClassID(),
inheritedUnityClass = (ushort)replacer.GetClassID(), //-what is this
scriptIndex = replacer.GetMonoScriptID(),
unknown1 = 0
};
}
else if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_Remove)
{
continue;
}
}
currentOffset += info.curFileSize;
uint pad = 8 - (currentOffset % 8);
if (pad != 8)
{
currentOffset += pad;
}
assetInfos.Add(info);
}
//-write new assets
while (currentReplacers.Count > 0)
{
AssetsReplacer replacer = currentReplacers.First();
if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_AddOrModify)
{
int classIndex = Array.FindIndex(typeTree.pTypes_Unity5, t => t.classId == replacer.GetClassID());
AssetFileInfo info = new AssetFileInfo()
{
index = replacer.GetPathID(),
offs_curFile = currentOffset,
curFileSize = (uint)replacer.GetSize(),
curFileTypeOrIndex = (uint)classIndex,
inheritedUnityClass = (ushort)replacer.GetClassID(),
scriptIndex = replacer.GetMonoScriptID(),
unknown1 = 0
};
currentOffset += info.curFileSize;
uint pad = 8 - (currentOffset % 8);
if (pad != 8)
{
currentOffset += pad;
}
assetInfos.Add(info);
}
currentReplacers.Remove(replacer);
}
writer.Write(assetInfos.Count);
writer.Align();
for (int i = 0; i < assetInfos.Count; i++)
{
assetInfos[i].Write(header.format, writer.Position, writer);
}
preloadTable.Write(writer.Position, writer, header.format);
dependencies.Write(writer.Position, writer, header.format);
uint metadataSize = (uint)writer.Position - 0x13;
//-for padding only. if all initial data before assetData is more than 0x1000, this is skipped
while (writer.Position < 0x1000 /*header.offs_firstFile*/)
{
writer.Write((byte)0x00);
}
header.offs_firstFile = (uint)writer.Position;
for (int i = 0; i < assetInfos.Count; i++)
{
AssetFileInfo info = assetInfos[i];
AssetsReplacer replacer = pReplacers.FirstOrDefault(n => n.GetPathID() == info.index);
if (replacer != null)
{
if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_AddOrModify)
{
replacer.Write(writer.Position, writer);
writer.Align8();
}
else if (replacer.GetReplacementType() == AssetsReplacementType.AssetsReplacement_Remove)
{
continue;
}
}
else
{
AssetFileInfo originalInfo = originalAssetInfos.FirstOrDefault(n => n.index == info.index);
if (originalInfo != null)
{
reader.Position = header.offs_firstFile + originalInfo.offs_curFile;
byte[] assetData = reader.ReadBytes((int)originalInfo.curFileSize);
writer.Write(assetData);
writer.Align8();
}
}
}
ulong fileSizeMarker = writer.Position;
reader.Position = header.offs_firstFile;
writer.Position = 0;
header.metadataSize = metadataSize;
header.fileSize = (uint)fileSizeMarker;
header.Write(writer.Position, writer);
return(writer.Position);
}