Method wayPointAction

src/Battlescape/AlienBAIState.cpp:1611–1678

* Attempts to fire a waypoint projectile at an enemy we, or one of our teammates sees. * * Waypoint targeting: pick from any units currently spotted by our allies. */

 * Waypoint targeting: pick from any units currently spotted by our allies.
 */
void AlienBAIState::wayPointAction()
{
	_aggroTarget = 0;
	for (std::vector<BattleUnit*>::const_iterator i = _save->getUnits()->begin(); i != _save->getUnits()->end() && _aggroTarget == 0; ++i)
	{
		if (!validTarget(*i, true, true))
			continue;
		_save->getPathfinding()->calculate(_unit, (*i)->getPosition(), *i, -1);
		if (_save->getPathfinding()->getStartDirection() != -1 &&
			explosiveEfficacy((*i)->getPosition(), _unit, (_unit->getMainHandWeapon()->getAmmoItem()->getRules()->getPower()/20)+1, _attackAction->diff))
		{
			_aggroTarget = *i;
		}
		_save->getPathfinding()->abortPath();
	}

	if (_aggroTarget != 0)
	{
		_attackAction->type = BA_LAUNCH;
		_attackAction->TU = _unit->getActionTUs(BA_LAUNCH, _attackAction->weapon);
		if (_attackAction->TU > _unit->getTimeUnits())
		{
			_attackAction->type = BA_RETHINK;
			return;
		}
		_attackAction->waypoints.clear();

		int PathDirection;
		int CollidesWith;
		Position LastWayPoint = _unit->getPosition();
		Position LastPosition = _unit->getPosition();
		Position CurrentPosition = _unit->getPosition();
		Position DirectionVector;

		_save->getPathfinding()->calculate(_unit, _aggroTarget->getPosition(), _aggroTarget, -1);
		PathDirection = _save->getPathfinding()->dequeuePath();
		while (PathDirection != -1)
		{
			LastPosition = CurrentPosition;
			_save->getPathfinding()->directionToVector(PathDirection, &DirectionVector);
			CurrentPosition = CurrentPosition + DirectionVector;
			Position voxelPosA ((CurrentPosition.x * 16)+8, (CurrentPosition.y * 16)+8, (CurrentPosition.z * 24)+16);
			Position voxelPosb ((LastWayPoint.x * 16)+8, (LastWayPoint.y * 16)+8, (LastWayPoint.z * 24)+16);
			CollidesWith = _save->getTileEngine()->calculateLine(voxelPosA, voxelPosb, false, 0, _unit, true);
			if (CollidesWith > V_EMPTY && CollidesWith < V_UNIT)
			{
				_attackAction->waypoints.push_back(LastPosition);
				LastWayPoint = LastPosition;
			}
			else if (CollidesWith == V_UNIT)
			{
				BattleUnit* target = _save->getTile(CurrentPosition)->getUnit();
				if (target == _aggroTarget)
				{
					_attackAction->waypoints.push_back(CurrentPosition);
					LastWayPoint = CurrentPosition;
				}
			}