int __thiscall ReadResearches(int this, int hDatFile, int a3)
{
  int _this; // [sp+0h] [bp-14h]@1
  signed __int16 RequiredTechsSize; // [sp+4h] [bp-10h]@4
  signed __int16 j; // [sp+8h] [bp-Ch]@6
  __int16 k; // [sp+8h] [bp-Ch]@9
  __int16 NameLength; // [sp+Ch] [bp-8h]@18
  __int16 i; // [sp+10h] [bp-4h]@2

  _this = this;
  *(_DWORD *)(this + 8) = a3;
  ReadData((HANDLE)hDatFile, (LPVOID)(this + 4), 2u);// Researchs
  if ( (signed int)*(_WORD *)(_this + 4) <= 0 )
  {
    *(_DWORD *)_this = 0;
    *(_WORD *)(_this + 4) = 0;
  }
  else
  {
    *(_DWORD *)_this = calloc(68u, *(_WORD *)(_this + 4));
    for ( i = 0; i < (signed int)*(_WORD *)(_this + 4); ++i )
    {
      RequiredTechsSize = 6;
      if ( DatVersion < 9.7200003 )
        RequiredTechsSize = 4;
      for ( j = 0; j < RequiredTechsSize; ++j )
        ReadData((HANDLE)hDatFile, (LPVOID)(68 * i + *(_DWORD *)_this + 2 * j + 4), 2u);// RequiredTechs
      for ( k = 0; k < 3; ++k )
      {
        ReadData((HANDLE)hDatFile, (LPVOID)(68 * i + *(_DWORD *)_this + 2 * k + 22), 2u);// Type
        ReadData((HANDLE)hDatFile, (LPVOID)(68 * i + *(_DWORD *)_this + 2 * k + 28), 2u);// Amount
        ReadData((HANDLE)hDatFile, (LPVOID)(68 * i + *(_DWORD *)_this + k + 34), 1u);// Enabled
      }
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 16), 2u);// RequiredTechCount
      if ( DatVersion < 10.22 )
        *(_WORD *)(*(_DWORD *)_this + 68 * i + 18) = -1;
      else
        ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 18), 2u);// Civ
      if ( DatVersion < 10.77 )
        *(_WORD *)(*(_DWORD *)_this + 68 * i + 20) = 0;
      else
        ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 20), 2u);// FullTechMode
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 48), 2u);// ResearchLocation
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 50), 2u);// LanguageDLLName
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 52), 2u);// LanguageDLLDescription
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 38), 2u);// ResearchTime
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 40), 2u);// TechageID
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 42), 2u);// Type
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 44), 2u);// IconID
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 46), 1u);// ButtonID
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 56), 4u);// LanguageDLLHelp
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 60), 4u);// LanguageDLLName2
      ReadData((HANDLE)hDatFile, (LPVOID)(*(_DWORD *)_this + 68 * i + 64), 4u);// Unknown1
      ReadData((HANDLE)hDatFile, &NameLength, 2u);// NameLength
      if ( NameLength <= 0 )
      {
        *(_DWORD *)(*(_DWORD *)_this + 68 * i) = 0;
      }
      else
      {
        *(_DWORD *)(*(_DWORD *)_this + 68 * i) = calloc(1u, NameLength);
        ReadData((HANDLE)hDatFile, *(LPVOID *)(*(_DWORD *)_this + 68 * i), NameLength);// Name
      }
    }
  }
  return _this;
}