mirror of https://github.com/OpenTTD/OpenTTD.git
162 lines
6.1 KiB
C++
162 lines
6.1 KiB
C++
/* $Id$ */
|
|
|
|
/*
|
|
* This file is part of OpenTTD.
|
|
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
|
|
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** @file ai_station.hpp Everything to query and build stations. */
|
|
|
|
#ifndef AI_STATION_HPP
|
|
#define AI_STATION_HPP
|
|
|
|
#include "ai_object.hpp"
|
|
#include "ai_error.hpp"
|
|
#include "ai_road.hpp"
|
|
#include "ai_basestation.hpp"
|
|
|
|
/**
|
|
* Class that handles all station related functions.
|
|
*/
|
|
class AIStation : public AIBaseStation {
|
|
public:
|
|
static const char *GetClassName() { return "AIStation"; }
|
|
|
|
/**
|
|
* All station related error messages.
|
|
*/
|
|
enum ErrorMessages {
|
|
/** Base for station related errors */
|
|
ERR_STATION_BASE = AIError::ERR_CAT_STATION << AIError::ERR_CAT_BIT_SIZE,
|
|
|
|
/** The station is build too close to another station, airport or dock */
|
|
ERR_STATION_TOO_CLOSE_TO_ANOTHER_STATION, // [STR_ERROR_TOO_CLOSE_TO_ANOTHER_AIRPORT, STR_ERROR_TOO_CLOSE_TO_ANOTHER_STATION, STR_ERROR_TOO_CLOSE_TO_ANOTHER_DOCK]
|
|
|
|
/** There are too many stations, airports and docks in the game */
|
|
ERR_STATION_TOO_MANY_STATIONS, // [STR_ERROR_TOO_MANY_STATIONS_LOADING, STR_ERROR_TOO_MANY_TRUCK_STOPS, STR_ERROR_TOO_MANY_BUS_STOPS]
|
|
|
|
/** There are too many stations, airports of docks in a town */
|
|
ERR_STATION_TOO_MANY_STATIONS_IN_TOWN, // [STR_ERROR_LOCAL_AUTHORITY_REFUSES_AIRPORT]
|
|
};
|
|
|
|
/**
|
|
* Type of stations known in the game.
|
|
*/
|
|
enum StationType {
|
|
/* Values are important, as they represent the internal state of the game. */
|
|
STATION_TRAIN = 0x01, //!< Train station
|
|
STATION_TRUCK_STOP = 0x02, //!< Truck station
|
|
STATION_BUS_STOP = 0x04, //!< Bus station
|
|
STATION_AIRPORT = 0x08, //!< Airport
|
|
STATION_DOCK = 0x10, //!< Dock
|
|
STATION_ANY = 0x1F, //!< All station types
|
|
};
|
|
|
|
/**
|
|
* Checks whether the given station is valid and owned by you.
|
|
* @param station_id The station to check.
|
|
* @return True if and only if the station is valid.
|
|
*/
|
|
static bool IsValidStation(StationID station_id);
|
|
|
|
/**
|
|
* Get the StationID of a tile, if there is a station.
|
|
* @param tile The tile to find the stationID of
|
|
* @return StationID of the station.
|
|
* @post Use IsValidStation() to see if the station is valid.
|
|
*/
|
|
static StationID GetStationID(TileIndex tile);
|
|
|
|
/**
|
|
* See how much cargo there is waiting on a station.
|
|
* @param station_id The station to get the cargo-waiting of.
|
|
* @param cargo_id The cargo to get the cargo-waiting of.
|
|
* @pre IsValidStation(station_id).
|
|
* @pre IsValidCargo(cargo_id).
|
|
* @return The amount of units waiting at the station.
|
|
*/
|
|
static int32 GetCargoWaiting(StationID station_id, CargoID cargo_id);
|
|
|
|
/**
|
|
* See how high the rating is of a cargo on a station.
|
|
* @param station_id The station to get the cargo-rating of.
|
|
* @param cargo_id The cargo to get the cargo-rating of.
|
|
* @pre IsValidStation(station_id).
|
|
* @pre IsValidCargo(cargo_id).
|
|
* @return The rating in percent of the cargo on the station.
|
|
*/
|
|
static int32 GetCargoRating(StationID station_id, CargoID cargo_id);
|
|
|
|
/**
|
|
* Get the coverage radius of this type of station.
|
|
* @param station_type The type of station.
|
|
* @return The radius in tiles.
|
|
*/
|
|
static int32 GetCoverageRadius(AIStation::StationType station_type);
|
|
|
|
/**
|
|
* Get the manhattan distance from the tile to the AIStation::GetLocation()
|
|
* of the station.
|
|
* @param station_id The station to get the distance to.
|
|
* @param tile The tile to get the distance to.
|
|
* @pre IsValidStation(station_id).
|
|
* @return The distance between station and tile.
|
|
*/
|
|
static int32 GetDistanceManhattanToTile(StationID station_id, TileIndex tile);
|
|
|
|
/**
|
|
* Get the square distance from the tile to the AIStation::GetLocation()
|
|
* of the station.
|
|
* @param station_id The station to get the distance to.
|
|
* @param tile The tile to get the distance to.
|
|
* @pre IsValidStation(station_id).
|
|
* @return The distance between station and tile.
|
|
*/
|
|
static int32 GetDistanceSquareToTile(StationID station_id, TileIndex tile);
|
|
|
|
/**
|
|
* Find out if this station is within the rating influence of a town.
|
|
* Stations within the radius influence the rating of the town.
|
|
* @param station_id The station to check.
|
|
* @param town_id The town to check.
|
|
* @return True if the tile is within the rating influence of the town.
|
|
*/
|
|
static bool IsWithinTownInfluence(StationID station_id, TownID town_id);
|
|
|
|
/**
|
|
* Check if any part of the station contains a station of the type
|
|
* StationType
|
|
* @param station_id The station to look at.
|
|
* @param station_type The StationType to look for.
|
|
* @return True if the station has a station part of the type StationType.
|
|
*/
|
|
static bool HasStationType(StationID station_id, StationType station_type);
|
|
|
|
/**
|
|
* Check if any part of the station contains a station of the type
|
|
* RoadType.
|
|
* @param station_id The station to look at.
|
|
* @param road_type The RoadType to look for.
|
|
* @return True if the station has a station part of the type RoadType.
|
|
*/
|
|
static bool HasRoadType(StationID station_id, AIRoad::RoadType road_type);
|
|
|
|
/**
|
|
* Get the town that was nearest to the given station when the station was built.
|
|
* @param station_id The station to look at.
|
|
* @return The TownID of the town whose center tile was closest to the station
|
|
* at the time the station was built.
|
|
* @note There is no guarantee that the station is even near the returned town
|
|
* nor that the returns town is closest to the station now. A station that was
|
|
* 'walked' to the other end of the map will still return the same town. Also,
|
|
* towns grow, towns change. So don't depend on this value too much.
|
|
*/
|
|
static TownID GetNearestTown(StationID station_id);
|
|
};
|
|
|
|
DECLARE_ENUM_AS_BIT_SET(AIStation::StationType)
|
|
|
|
#endif /* AI_STATION_HPP */
|