[Immortal_BLG]

Hello!

Probably too late, but....
Function from leaked HL2 source code to control over a bot:

// Handle the "PossessBot" command.
void PossessBot_f()
{
	CCSPlayer *pPlayer = CCSPlayer::Instance( UTIL_GetCommandClientIndex() );
	if ( !pPlayer )
		return;

	// Put the local player in control of this bot.
	if ( engine->Cmd_Argc() != 2 )
	{
		Warning( "PossessBot <client index>\n" );
		return;
	}

	int iBotClient = atoi( engine->Cmd_Argv(1) );
	int iBotEnt = iBotClient + 1;
	
	if ( iBotClient < 0 || 
		iBotClient >= gpGlobals->maxClients || 
		pPlayer->entindex() == iBotEnt )
	{
		Warning( "PossessBot <client index>\n" );
	}
	else
	{
		edict_t *pPlayerData = pPlayer->pev;
		edict_t *pBotData = engine->PEntityOfEntIndex( iBotEnt );
		if ( pBotData && pBotData->m_pEnt )
		{
			// SWAP EDICTS

			// Backup things we don't want to swap.
			edict_t oldPlayerData = *pPlayerData;
			edict_t oldBotData = *pBotData;

			// Swap edicts.
			edict_t tmp = *pPlayerData;
			*pPlayerData = *pBotData;
			*pBotData = tmp;

			// Restore things we didn't want to swap.
			//pPlayerData->m_EntitiesTouched = oldPlayerData.m_EntitiesTouched;
			//pBotData->m_EntitiesTouched = oldBotData.m_EntitiesTouched;
		
			CBaseEntity *pPlayerBaseEnt = CBaseEntity::Instance( pPlayerData );
			CBaseEntity *pBotBaseEnt = CBaseEntity::Instance( pBotData );

			// Make the other a bot and make the player not a bot.
			pPlayerBaseEnt->RemoveFlag( FL_FAKECLIENT );
			pBotBaseEnt->AddFlag( FL_FAKECLIENT );
		
						
			// Point the CBaseEntities at the right players.
			pPlayerBaseEnt->pev = pPlayerData;
			pBotBaseEnt->pev = pBotData;

			// Freeze the bot.
			pBotBaseEnt->AddEFlags( EFL_BOT_FROZEN );
		}
	}
}

ConCommand cc_PossessBot( "PossessBot", PossessBot_f, "Toggle. Possess a bot.\n\tArguments: <bot client number>", FCVAR_CHEAT );