2009  * The given ID is set to the ID of the north tile and the TileDiff to the north tile is returned.

  2009  * The given ID is set to the ID of the north tile and the TileDiff to the north tile is returned.

  2010  *

  2010  *

  2011  * @param house Is changed to the HouseID of the north tile of the same house

  2011  * @param house Is changed to the HouseID of the north tile of the same house

  2012  * @return TileDiff from the tile of the given HouseID to the north tile

  2012  * @return TileDiff from the tile of the given HouseID to the north tile

  2013  */

  2013  */

  2015 {

  2015 {

  2016 	if (house >= 3) { // house id 0,1,2 MUST be single tile houses, or this code breaks.

  2016 	if (house >= 3) { // house id 0,1,2 MUST be single tile houses, or this code breaks.

  2017 		if (GetHouseSpecs(house - 1)->building_flags & TILE_SIZE_2x1) {

  2017 		if (GetHouseSpecs(house - 1)->building_flags & TILE_SIZE_2x1) {

  2018 			house--;

  2018 			house--;

  2019 			return TileDiffXY(-1, 0);

  2019 			return TileDiffXY(-1, 0);