Method think

src/Battlescape/UnitFallBState.cpp:74–300

* Runs state functionality every cycle. * Progresses the fall, updates the battlescape, ... */

 * Progresses the fall, updates the battlescape, ...
 */
void UnitFallBState::think()
{
	for (std::list<BattleUnit*>::iterator unit = _parent->getSave()->getFallingUnits()->begin(); unit != _parent->getSave()->getFallingUnits()->end();)
	{
		if ((*unit)->getStatus() == STATUS_TURNING)
		{
			(*unit)->abortTurn();
		}
		bool largeCheck = true;
		bool falling = true;
		int size = (*unit)->getArmor()->getSize() - 1;
		if ((*unit)->getHealth() == 0 || (*unit)->getStunlevel() >= (*unit)->getHealth())
		{
			unit = _parent->getSave()->getFallingUnits()->erase(unit);
			continue;
		}
		bool onScreen = ((*unit)->getVisible() && _parent->getMap()->getCamera()->isOnScreen((*unit)->getPosition(), true));
		Tile *tileBelow = _parent->getSave()->getTile((*unit)->getPosition() + Position(0,0,-1));
		for (int x = size; x >= 0; x--)
		{
			for (int y = size; y >= 0; y--)
			{
				Tile *otherTileBelow = _parent->getSave()->getTile((*unit)->getPosition() + Position(x,y,-1));
				if (!_parent->getSave()->getTile((*unit)->getPosition() + Position(x,y,0))->hasNoFloor(otherTileBelow) || (*unit)->getArmor()->getMovementType() == MT_FLY)
				{
					largeCheck = false;
				}
			}
		}

		falling = largeCheck
			&& (*unit)->getPosition().z != 0
			&& (*unit)->getTile()->hasNoFloor(tileBelow)
			&& (*unit)->getArmor()->getMovementType() != MT_FLY
			&& (*unit)->getWalkingPhase() == 0;

		if (falling)
		{
			// Tile(s) unit is falling into.
			for (int x = (*unit)->getArmor()->getSize() - 1; x >= 0; --x)
			{
				for (int y = (*unit)->getArmor()->getSize() - 1; y >= 0; --y)
				{
					Tile *tileBelow = _parent->getSave()->getTile((*unit)->getPosition() + Position(x,y,-1));
					tilesToFallInto.push_back(tileBelow);
				}
			}

			// Check each tile for units that need moving out of the way.
			for (std::vector<Tile*>::iterator i = tilesToFallInto.begin(); i < tilesToFallInto.end(); ++i)
			{
				BattleUnit *unitBelow = (*i)->getUnit();
				if (unitBelow
					&& (*unit) != unitBelow                                                                     // falling units do not fall on themselves
					&& !(std::find(unitsToMove.begin(), unitsToMove.end(), unitBelow) != unitsToMove.end()))    // already added
				{
					unitsToMove.push_back(unitBelow);
				}