/** @file group_cmd.cpp Handling of the engine groups */

#include "stdafx.h"

#include "openttd.h"

#include "variables.h"

#include "player.h"

#include "table/strings.h"

#include "command_func.h"

#include "vehicle.h"

#include "saveload.h"

#include "debug.h"

#include "train.h"

#include "aircraft.h"

#include "string.h"

#include "vehicle_gui.h"

#include "misc/autoptr.hpp"

#include "strings_func.h"

/**

 * Update the num engines of a groupID. Decrease the old one and increase the new one

 * @note called in SetTrainGroupID and UpdateTrainGroupID

 * @param i     EngineID we have to update

 * @param old_g index of the old group