Function CommandFilter

bwapi/BWAPI/Source/Detours.cpp:526–580

int   lastHotkey;
DWORD lastHotkeyTime;
void __fastcall CommandFilter(BYTE *buffer, DWORD length)
{
  if ( !buffer || !length )
    return;

  // Filter commands using BWAPI rules
  if ( BWAPI::BroodwarImpl.isFlagEnabled(BWAPI::Flag::UserInput) ||
       !BWAPI::BroodwarImpl.onStartCalled ||
       buffer[0] <= 0x0B ||
       (buffer[0] >= 0x0F && buffer[0] <= 0x12) ||
       (length >= 3 && buffer[0] == 0x13 && buffer[1] == 1)    || // Hotkey (select only)
       (buffer[0] >= 0x37 && buffer[0] <= 0x59) ||
       buffer[0] >= 0x5B )
  {
    // Custom select code
    if ( buffer[0] == 0x09 ||
         buffer[0] == 0x0A ||
         buffer[0] == 0x0B ||
         (length >= 3 && buffer[0] == 0x13 && buffer[1] == 1) ) // Select Units
    {
      // Do our own center view on hotkeys, since BWAPI introduces a bug that destroys this
      if ( length >= 3 && buffer[0] == 0x13 && buffer[1] == 1 ) // Recall Hotkey
      {
        DWORD thisHotkeyTime = GetTickCount();
        if ( lastHotkey == buffer[2] && (thisHotkeyTime - lastHotkeyTime) < 800 )
        {
          // do center view here
          BWAPI::BroodwarImpl.moveToSelectedUnits();
          lastHotkeyTime = 0;
          lastHotkey     = -1;
        }
        else
        {
          lastHotkeyTime = thisHotkeyTime;
          lastHotkey     = buffer[2];
        }
      }
      BWAPI::BroodwarImpl.wantSelectionUpdate = true;
      return;
    } // selections

    if ( buffer[0] == 0x0C ||
         (buffer[0] == 0x13 && !(buffer[1] & 1)) ||
         buffer[0] == 0x14 ||
         buffer[0] == 0x15 ||
         (buffer[0] >= 0x18 && buffer[0] <= 0x36) ||
         buffer[0] == 0x5A )
    {
      //reload the unit selection states (so that the user doesn't notice any changes in selected units in the Starcraft GUI.
      BW::Orders::Select sel(BW::BWDATA::ClientSelectionCount, const_cast<const BW::CUnit**>(BW::BWDATA::ClientSelectionGroup.data()));
      QueueGameCommand(&sel, sel.size());
    } // user select
    QueueGameCommand(buffer, length);
  }
}