Function CmdMoveWaypointName

src/waypoint_cmd.cpp:621–651

* Move a waypoint name. * @param flags type of operation * @param waypoint_id id of waypoint * @param tile to move the waypoint name to * @return the cost of this operation or an error and the waypoint ID */

 * @return the cost of this operation or an error and the waypoint ID
 */
std::tuple<CommandCost, StationID> CmdMoveWaypointName(DoCommandFlags flags, StationID waypoint_id, TileIndex tile)
{
	Waypoint *wp = Waypoint::GetIfValid(waypoint_id);
	if (wp == nullptr) return { CMD_ERROR, StationID::Invalid() };

	if (wp->owner != OWNER_NONE) {
		CommandCost ret = CheckOwnership(wp->owner);
		if (ret.Failed()) return { ret, StationID::Invalid() };
	}

	const StationRect *r = &wp->rect;
	if (!r->PtInExtendedRect(TileX(tile), TileY(tile))) {
		return { CommandCost(STR_ERROR_SITE_UNSUITABLE), StationID::Invalid() };
	}

	bool other_station = false;
	/* Check if the tile is the base tile of another station */
	ForAllStationsRadius(tile, 0, [&](BaseStation *st) {
		if (st != nullptr) {
			if (st != wp && st->xy == tile) other_station = true;
		}
	});
	if (other_station) return { CommandCost(STR_ERROR_SITE_UNSUITABLE), StationID::Invalid() };

	if (flags.Test(DoCommandFlag::Execute)) {
		wp->MoveSign(tile);

		wp->UpdateVirtCoord();
	}
	return { CommandCost(), waypoint_id };
}

/**
 * Callback function that is called after a name is moved