};

static inline bool IsDefaultGroupID(GroupID index)

{

	return index == DEFAULT_GROUP;

}

/**

 * Checks if a GroupID stands for all vehicles of a company

 * @param id_g The GroupID to check

 * @return true is id_g is identical to ALL_GROUP

 */

static inline bool IsAllGroupID(GroupID id_g)

{

	return id_g == ALL_GROUP;

}

#define FOR_ALL_GROUPS_FROM(g, start) for (g = Group::Get(start); g != NULL; g = (g->index + 1U < Group::GetPoolSize()) ? Group::Get(g->index + 1) : NULL) if (g->IsValid())

#define FOR_ALL_GROUPS(g) FOR_ALL_GROUPS_FROM(g, 0)

/**

 * Get the current size of the GroupPool

 */

{

	const Group *g;

	uint num = 0;

	FOR_ALL_GROUPS(g) num++;

	return num;

}

/**

 * Get the number of engines with EngineID id_e in the group with GroupID

 * id_g

 * @param id_g The GroupID of the group used

 * @param id_e The EngineID of the engine to count

 * @return The number of engines with EngineID id_e in the group

 */

uint GetGroupNumEngines(CompanyID company, GroupID id_g, EngineID id_e);

static inline void IncreaseGroupNumVehicle(GroupID id_g)

{

	Group *g = Group::GetIfValid(id_g);

	if (g != NULL) g->num_vehicle++;

}