/// <summary>
/// Gets the frontend group, decompresses it if needed, and plugs into Vector.
/// </summary>
/// <param name="byteptr_t">Pointer to the beginning of frontend group in Global data.</param>
/// <param name="length">Length of the block to be read.</param>
/// <param name="db">Database to which add classes.</param>
private static unsafe void E_FNGroup(byte *byteptr_t, uint length, Database.Underground2 db)
{
// Copy data and decompress
var data = new byte[length];
fixed(byte *dataptr_t = &data[0])
{
for (int a1 = 0; a1 < data.Length; ++a1)
{
*(dataptr_t + a1) = *(byteptr_t + a1);
}
}
data = SAT.Decompress(data);
var Class = new FNGroup(data, db);
// Check whether this FEng class already exists in the database
if (Class.Destroy)
{
return;
}
if (db.FNGroups.FindCollection(Class.CollectionName) != null)
{
return;
}
db.FNGroups.Collections.Add(Class);
Bin.Hash(Class.CollectionName);
}
/// <summary>
/// Disassembles array into <see cref="FNGroup"/> properties.
/// </summary>
/// <param name="br"><see cref="BinaryReader"/> to read <see cref="FNGroup"/> with.</param>
public override void Disassemble(BinaryReader br)
{
var ID = br.ReadUInt32();
var size = br.ReadInt32();
this._data = SAT.Decompress(br.ReadBytes(size), ID);
using var ms = new MemoryStream(this._data);
using var reader = new BinaryReader(ms);
reader.BaseStream.Position = 0x28;
this.CollectionName = reader.ReadNullTermUTF8().ToUpper();
if (this.CollectionName.EndsWith(".FNG"))
{
this.CollectionName.GetFormattedValue("{X}.FNG", out string name);
this.CollectionName = name;
}
reader.BaseStream.Position = 0x28;
while (reader.BaseStream.Position < reader.BaseStream.Length)
{
byte b1 = reader.ReadByte();
byte b2 = reader.ReadByte();
byte b3 = reader.ReadByte();
byte b4 = reader.ReadByte();
// SAT, SAD, SA(0x90) or 1111
if ((b1 == 'S' && b2 == 'A') || (b1 == Byte.MaxValue && b2 == Byte.MaxValue &&
b3 == Byte.MaxValue && b4 == Byte.MaxValue))
{
uint Offset = (uint)reader.BaseStream.Position;
uint Blue = reader.ReadUInt32();
uint Green = reader.ReadUInt32();
uint Red = reader.ReadUInt32();
uint Alpha = reader.ReadUInt32();
if (Blue <= Byte.MaxValue && Green <= Byte.MaxValue &&
Red <= Byte.MaxValue && Alpha <= Byte.MaxValue)
{
var color = new FEngColor(this)
{
Offset = Offset,
Blue = (byte)Blue,
Green = (byte)Green,
Red = (byte)Red,
Alpha = (byte)Alpha
};
this._colorinfo.Add(color);
}
}
}
}