Method addActivityXcom

src/Savegame/Country.cpp:125–128

* Adds to the country's xcom activity level. * @param activity how many points to add. */

 * @param activity how many points to add.
 */
void Country::addActivityXcom(int activity)
{
	_activityXcom.back() += activity;
}

/**
 * Adds to the country's alien activity level.