Function TownLayoutAllowsHouseHere

src/town_cmd.cpp:2652–2675

* Checks if the current town layout allows building here. * @param t The town. * @param tile The tile to check. * @return true iff town layout allows building here. * @note see layouts */

 * @note see layouts
 */
static inline bool TownLayoutAllowsHouseHere(Town *t, TileIndex tile, TownExpandModes modes)
{
	if (!modes.Test(TownExpandMode::Buildings)) return false;

	/* Allow towns everywhere when we don't build roads */
	if (!TownAllowedToBuildRoads(modes)) return true;

	TileIndexDiffC grid_pos = TileIndexToTileIndexDiffC(t->xy, tile);

	switch (t->layout) {
		case TL_2X2_GRID:
			if ((grid_pos.x % 3) == 0 || (grid_pos.y % 3) == 0) return false;
			break;

		case TL_3X3_GRID:
			if ((grid_pos.x % 4) == 0 || (grid_pos.y % 4) == 0) return false;
			break;

		default:
			break;
	}

	return true;
}


/**