// Method that chunks an flevel
void bw_Decompress(object sender, DoWorkEventArgs e)
{
ExtractArgs ea = (ExtractArgs)e.Argument;
using (var fs = new FileStream(ea.Input, System.IO.FileMode.Open))
{
var df = FF7Files.LoadLGP(fs, ea.Input);
int file = 0;
foreach (var item in df.Items)
{
(sender as BackgroundWorker).ReportProgress(100 * file++ / df.Items.Count);
if (Path.GetExtension(item.Name).Length == 0)
{
byte[] ff = new byte[item.Length - 24];
fs.Position = item.Start + 24;
fs.Read(ff, 0, ff.Length);
var chunks = FieldFile.Unchunk(ff);
if (chunks.Count > 0)
{
foreach (int i in ea.Chunks)
{
string fn = System.IO.Path.Combine(ea.Output, Path.GetFileNameWithoutExtension(item.Name) + ".chunk." + i);
File.WriteAllBytes(fn, chunks[i - 1]);
}
}
}
}
}
}
// Method that chunks an flevel then re-assembles it
void bw_Compress(object sender, DoWorkEventArgs e)
{
ExtractArgs ea = (ExtractArgs)e.Argument;
using (var fs = new FileStream(ea.Input, FileMode.Open))
{
var df = FF7Files.LoadLGP(fs, ea.Input);
int file = 0;
List <byte[]> chunks = new List <byte[]>();
//string flev = Path.Combine(ea.Output, Path.GetFileName("flevel.lgp"));
string flev = Directory.GetCurrentDirectory() + "\\PC\\Output File\\flevel.lgp";
// Apply ToC and CRC to the new flevel
byte[] addStart = new byte[23301];
fs.Position = 0;
fs.Read(addStart, 0, addStart.Length);
using (var appendStart = new FileStream(flev, FileMode.Append))
{
appendStart.Write(addStart, 0, addStart.Length);
appendStart.Close();
}
int tocPointer = 36; // Holds pointer location for where to write new offset for ToC
ulong fieldOffset = 0x5B05; // Holds offset value to write into tocPointer
int fieldCount = 0; // Counts fields
foreach (var item in df.Items)
{
(sender as BackgroundWorker).ReportProgress(100 * file++ / df.Items.Count);
// This route is for field files
if (Path.GetExtension(item.Name).Length == 0 &&
item.Name != "maplist"
// These files 'shrink' when included; seem functional but excluded for now
&& item.Name != "blackbgb" &&
item.Name != "frcyo" &&
item.Name != "fship_4" &&
item.Name != "las0_8" &&
item.Name != "las2_1" &&
item.Name != "uutai1"
)
{
byte[] ff = new byte[item.Length - 24];
fs.Position = item.Start + 24;
fs.Read(ff, 0, ff.Length);
chunks = FieldFile.Unchunk(ff);
// >>>>
// Can adjust the uncompressed chunks here if need be before they go to recompression
// Randomisation tasks should be called here, triggered based on section #
// >>>>
// If using consistent allocation of models, then that logic should be done somewhere here so
// that all fields passing through have access to the newly assigned HRC strings and can pass
// them through to the rando logic.
// Sends Field Script chunk of field to be randomised
if (chkItems.Checked)
{
chunks[0] = FieldScript.ChangeItemsMateria(chunks[0], item.Name);
}
// Sends Model Loader chunk of field to be randomised
if (chkModels.Checked)
{
chunks[2] = ModelLoader.SwapFieldModels(chunks[2]);
}
// Recompresses the chunks into a field
var field = FieldFile.Chunk(chunks, item.Name);
// Skip the first ToC offset as this won't change
if (fieldCount != 0)
{
// Adds field length to pointer so we know where next section starts
tocPointer += 27;
byte[] byteOffset = EndianMethods.GetLittleEndianConvert(fieldOffset);
using (Stream stream = File.Open(flev, FileMode.Open))
{
stream.Position = tocPointer;
stream.Write(byteOffset, 0, 4);
}
}
// Takes the size of the chunked field; used to determine next offset for ToC
fieldOffset += (ulong)field.Length;
fieldCount++;
// Writes it into the new flevel
using (var stream = new FileStream(flev, FileMode.Append))
{
stream.Write(field, 0, field.Length);
}
}
// This route is for non-field files
else
{
byte[] field = new byte[item.Length];
fs.Position = item.Start;
fs.Read(field, 0, field.Length);
// Adds field length to pointer so we know where next section starts
tocPointer += 27;
byte[] byteOffset = EndianMethods.GetLittleEndianConvert(fieldOffset);
using (Stream stream = File.Open(flev, FileMode.Open))
{
stream.Position = tocPointer;
stream.Write(byteOffset, 0, 4);
}
// Takes the size of the misc file
fieldOffset += (ulong)field.Length;
fieldCount++;
// Writes it into the new flevel
using (var stream = new FileStream(flev, FileMode.Append))
{
stream.Write(field, 0, field.Length);
}
}
}
// Adds the final terminating string to the flevel
byte[] terminate = new byte[] { 0x46, 0x49, 0x4E, 0x41, 0x4C, 0x20, 0x46, 0x41, 0x4E, 0x54, 0x41, 0x53, 0x59, 0x37 };
using (var finalStream = new FileStream(flev, FileMode.Append))
{
finalStream.Write(terminate, 0, terminate.Length);
}
}
}
