Function GrowTownWithExtraHouse

src/town_cmd.cpp:1213–1241

* Grows the town with an extra house. * Check if there are enough neighbour house tiles * next to the current tile. If there are enough * add another house. * * @param t The current town. * @param tile The target tile for the extra house. * @return true if an extra house has been added. */

 * @return true if an extra house has been added.
 */
static bool GrowTownWithExtraHouse(Town *t, TileIndex tile, TownExpandModes modes)
{
	/* We can't look further than that. */
	if (DistanceFromEdge(tile) == 0) return false;

	uint counter = 0; // counts the house neighbour tiles

	/* Check the tiles E,N,W and S of the current tile for houses */
	for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) {
		/* Count both void and house tiles for checking whether there
		 * are enough houses in the area. This to make it likely that
		 * houses get build up to the edge of the map. */
		switch (GetTileType(TileAddByDiagDir(tile, dir))) {
			case MP_HOUSE:
			case MP_VOID:
				counter++;
				break;

			default:
				break;
		}

		/* If there are enough neighbours stop here */
		if (counter >= 3) {
			return TryBuildTownHouse(t, tile, modes);
		}
	}
	return false;
}

/**
 * Grows the town with a road piece.