Method selectNearestTarget

src/Battlescape/AlienBAIState.cpp:1012–1056

* Selects the nearest known living target we can see/reach and returns the number of visible enemies. * This function includes civilians as viable targets. * @return viable targets. */

 * @return viable targets.
 */
int AlienBAIState::selectNearestTarget()
{
	int tally = 0;
	_closestDist= 100;
	_aggroTarget = 0;
	Position origin = _save->getTileEngine()->getSightOriginVoxel(_unit);
	origin.z -= 2;
	Position target;
	for (std::vector<BattleUnit*>::const_iterator i = _save->getUnits()->begin(); i != _save->getUnits()->end(); ++i)
	{
		if (validTarget(*i, true, true) &&
			_save->getTileEngine()->visible(_unit, (*i)->getTile()))
		{
			tally++;
			int dist = _save->getTileEngine()->distance(_unit->getPosition(), (*i)->getPosition());
			if (dist < _closestDist)
			{
				bool valid = false;
				if (_rifle || !_melee)
				{
					valid = _save->getTileEngine()->canTargetUnit(&origin, (*i)->getTile(), &target, _unit);
				}
				else
				{
					if (selectPointNearTarget(*i, _unit->getTimeUnits()))
					{
						int dir = _save->getTileEngine()->getDirectionTo(_attackAction->target, (*i)->getPosition());
						valid = _save->getTileEngine()->validMeleeRange(_attackAction->target, dir, _unit, *i, 0);
					}
				}
				if (valid)
				{
					_closestDist = dist;
					_aggroTarget = *i;
				}
			}
		}
	}
	if (_aggroTarget)
	{
		return tally;
	}

	return 0;
}

/**
 * Selects the nearest known living Xcom unit.