Method selectPointNearTarget

src/Battlescape/AlienBAIState.cpp:1112–1149

* Selects a point near enough to our target to perform a melee attack. * @param target Pointer to a target. * @param maxTUs Maximum time units the path to the target can cost. * @return True if a point was found. */

 * @return True if a point was found.
 */
bool AlienBAIState::selectPointNearTarget(BattleUnit *target, int maxTUs) const
{
	int size = _unit->getArmor()->getSize();
	int targetsize = target->getArmor()->getSize();
	bool returnValue = false;
	int distance = 1000;
	for (int z = -1; z <= 1; ++z)
	{
		for (int x = -size; x <= targetsize; ++x)
		{
			for (int y = -size; y <= targetsize; ++y)
			{
				if (x || y) // skip the unit itself
				{
					Position checkPath = target->getPosition() + Position (x, y, z);
					if (_save->getTile(checkPath) == 0 || std::find(_reachable.begin(), _reachable.end(), _save->getTileIndex(checkPath))  == _reachable.end())
						continue;
					int dir = _save->getTileEngine()->getDirectionTo(checkPath, target->getPosition());
					bool valid = _save->getTileEngine()->validMeleeRange(checkPath, dir, _unit, target, 0);
					bool fitHere = _save->setUnitPosition(_unit, checkPath, true);

					if (valid && fitHere && !_save->getTile(checkPath)->getDangerous())
					{
						_save->getPathfinding()->calculate(_unit, checkPath, 0, maxTUs);
						if (_save->getPathfinding()->getStartDirection() != -1 && _save->getPathfinding()->getPath().size() < distance)
						{
							_attackAction->target = checkPath;
							returnValue = true;
							distance = _save->getPathfinding()->getPath().size();
						}
						_save->getPathfinding()->abortPath();
					}
				}
			}
		}
	}
	return returnValue;
}

/**
 * Selects an AI mode based on a number of factors, some RNG and the results of the rest of the determinations.