Function CheckTownBuild2House

src/town_cmd.cpp:2724–2738

* Checks if a 1x2 or 2x1 building is allowed here, accounting for road layout and tile heights. * Also, tests both building positions that occupy this tile. * @param tile The tile where the building should be built. * @param t The town. * @param maxz The maximum Z level, since all tiles must have the same height. * @param noslope Are foundations disallowed for this house? * @param second The

 * @param second The diagdir from the first tile to the second tile.
 */
static bool CheckTownBuild2House(TileIndex *tile, Town *t, int maxz, bool noslope, DiagDirection second, TownExpandModes modes)
{
	/* 'tile' is already checked in BuildTownHouse() - CanBuildHouseHere() and slope test */

	TileIndex tile2 = *tile + TileOffsByDiagDir(second);
	if (TownLayoutAllowsHouseHere(t, tile2, modes) && CheckBuildHouseSameZ(tile2, maxz, noslope)) return true;

	tile2 = *tile + TileOffsByDiagDir(ReverseDiagDir(second));
	if (TownLayoutAllowsHouseHere(t, tile2, modes) && CheckBuildHouseSameZ(tile2, maxz, noslope)) {
		*tile = tile2;
		return true;
	}

	return false;
}


/**