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Location: cpp/openttd-patchpack/source/src/station_func.h

r24755:9b2ef076754d 2.8 KiB text/x-c Show Annotation Show as Raw Download as Raw

Michael Lutz

Codechange: Don't use cpp_offsetof in the save/load code.

Many of the member variables that are used in save/load are inside types
that are not standard layout types. Using pointer arithmetics to determine
addresses of members inside types that are not standard layout is generally
undefined behaviour. If we'd use C++17, it is conditionally supported, which means
each compiler may or may not support it. And even then using it for individual
array elements is syntactically not supported the the standard offsetof function.

Unfortunately, the trickery employed for saving linkgraph settings causes quite some
clutter in the settings ini files.

/*
 * 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 station_func.h Functions related to stations. */

#ifndef STATION_FUNC_H
#define STATION_FUNC_H

#include "sprite.h"
#include "rail_type.h"
#include "road_type.h"
#include "vehicle_type.h"
#include "economy_func.h"
#include "rail.h"
#include "road.h"
#include "linkgraph/linkgraph_type.h"
#include "industry_type.h"

void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius);

void ShowStationViewWindow(StationID station);
void UpdateAllStationVirtCoords();
void ClearAllStationCachedNames();

CargoArray GetProductionAroundTiles(TileIndex tile, int w, int h, int rad);
CargoArray GetAcceptanceAroundTiles(TileIndex tile, int w, int h, int rad, CargoTypes *always_accepted = nullptr);

void UpdateStationAcceptance(Station *st, bool show_msg);

const DrawTileSprites *GetStationTileLayout(StationType st, byte gfx);
void StationPickerDrawSprite(int x, int y, StationType st, RailType railtype, RoadType roadtype, int image);

bool HasStationInUse(StationID station, bool include_company, CompanyID company);

void DeleteOilRig(TileIndex t);
void UpdateStationDockingTiles(Station *st);
void RemoveDockingTile(TileIndex t);
void ClearDockingTilesCheckingNeighbours(TileIndex tile);
bool IsValidDockingDirectionForDock(TileIndex t, DiagDirection d);

/* Check if a rail station tile is traversable. */
bool IsStationTileBlocked(TileIndex tile);

bool CanStationTileHavePylons(TileIndex tile);
bool CanStationTileHaveWires(TileIndex tile);

void UpdateAirportsNoise();

bool SplitGroundSpriteForOverlay(const TileInfo *ti, SpriteID *ground, RailTrackOffset *overlay_offset);

void IncreaseStats(Station *st, const Vehicle *v, StationID next_station_id);
void IncreaseStats(Station *st, CargoID cargo, StationID next_station_id, uint capacity, uint usage, EdgeUpdateMode mode);
void RerouteCargo(Station *st, CargoID c, StationID avoid, StationID avoid2);

/**
 * Calculates the maintenance cost of a number of station tiles.
 * @param num Number of station tiles.
 * @return Total cost.
 */
static inline Money StationMaintenanceCost(uint32 num)
{
	return (_price[PR_INFRASTRUCTURE_STATION] * num * (1 + IntSqrt(num))) >> 7; // 7 bits scaling.
}

Money AirportMaintenanceCost(Owner owner);

#endif /* STATION_FUNC_H */