Function TestTownOwnsBridge

src/town_cmd.cpp:99–113

* Check if a town 'owns' a bridge. * Bridges do not directly have an owner, so we check the tiles adjacent to the bridge ends. * If either adjacent tile belongs to the town then it will be assumed that the town built * the bridge. * @param tile The bridge tile to test * @param t The town we are interested in * @return true If town 'owns' a bridge. */

 * @return true If town 'owns' a bridge.
 */
static bool TestTownOwnsBridge(TileIndex tile, const Town *t)
{
	if (!IsTileOwner(tile, OWNER_TOWN)) return false;

	TileIndex adjacent = tile + TileOffsByDiagDir(ReverseDiagDir(GetTunnelBridgeDirection(tile)));
	bool town_owned = IsTileType(adjacent, MP_ROAD) && IsTileOwner(adjacent, OWNER_TOWN) && GetTownIndex(adjacent) == t->index;

	if (!town_owned) {
		/* Or other adjacent road */
		adjacent = tile + TileOffsByDiagDir(ReverseDiagDir(GetTunnelBridgeDirection(GetOtherTunnelBridgeEnd(tile))));
		town_owned = IsTileType(adjacent, MP_ROAD) && IsTileOwner(adjacent, OWNER_TOWN) && GetTownIndex(adjacent) == t->index;
	}

	return town_owned;
}

Town::~Town()
{