mirror of https://github.com/OpenTTD/OpenTTD.git
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* $Id$ */
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/** @file depot.h Header files for depots (not hangars) */
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#ifndef DEPOT_H
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#define DEPOT_H
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#include "direction_type.h"
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#include "depot_type.h"
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#include "oldpool.h"
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#include "road_map.h"
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#include "rail_map.h"
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#include "water_map.h"
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#include "station_map.h"
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DECLARE_OLD_POOL(Depot, Depot, 3, 8000)
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struct Depot : PoolItem<Depot, DepotID, &_Depot_pool> {
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TileIndex xy;
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TownID town_index;
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Depot(TileIndex xy = 0) : xy(xy) {}
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~Depot();
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inline bool IsValid() const { return this->xy != 0; }
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};
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static inline bool IsValidDepotID(DepotID index)
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{
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return index < GetDepotPoolSize() && GetDepot(index)->IsValid();
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}
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void ShowDepotWindow(TileIndex tile, VehicleType type);
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#define FOR_ALL_DEPOTS_FROM(d, start) for (d = GetDepot(start); d != NULL; d = (d->index + 1U < GetDepotPoolSize()) ? GetDepot(d->index + 1U) : NULL) if (d->IsValid())
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#define FOR_ALL_DEPOTS(d) FOR_ALL_DEPOTS_FROM(d, 0)
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/**
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* Check if a tile is a depot of the given type.
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*/
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static inline bool IsTileDepotType(TileIndex tile, TransportType type)
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{
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switch (type) {
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case TRANSPORT_RAIL:
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return IsTileType(tile, MP_RAILWAY) && GetRailTileType(tile) == RAIL_TILE_DEPOT;
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case TRANSPORT_ROAD:
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return IsRoadDepotTile(tile);
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case TRANSPORT_WATER:
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return IsTileType(tile, MP_WATER) && GetWaterTileType(tile) == WATER_TILE_DEPOT;
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default:
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NOT_REACHED();
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return false;
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}
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}
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/**
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* Is the given tile a tile with a depot on it?
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* @param tile the tile to check
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* @return true if and only if there is a depot on the tile.
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*/
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static inline bool IsDepotTile(TileIndex tile)
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{
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switch (GetTileType(tile)) {
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case MP_ROAD: return IsRoadDepot(tile);
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case MP_WATER: return GetWaterTileType(tile) == WATER_TILE_DEPOT;
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case MP_RAILWAY: return GetRailTileType(tile) == RAIL_TILE_DEPOT;
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case MP_STATION: return IsHangar(tile);
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default: return false;
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}
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}
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/**
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* Find out if the slope of the tile is suitable to build a depot of given direction
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* @param direction The direction in which the depot's exit points
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* @param tileh The slope of the tile in question
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* @return true if the construction is possible
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* This is checked by the ugly 0x4C >> direction magic, which does the following:
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* 0x4C is 0100 1100 and tileh has only bits 0..3 set (steep tiles are ruled out)
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* So: for direction (only the significant bits are shown)<p>
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* 00 (exit towards NE) we need either bit 2 or 3 set in tileh: 0x4C >> 0 = 1100<p>
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* 01 (exit towards SE) we need either bit 1 or 2 set in tileh: 0x4C >> 1 = 0110<p>
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* 02 (exit towards SW) we need either bit 0 or 1 set in tileh: 0x4C >> 2 = 0011<p>
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* 03 (exit towards NW) we need either bit 0 or 4 set in tileh: 0x4C >> 3 = 1001<p>
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* So ((0x4C >> direction) & tileh) determines whether the depot can be built on the current tileh
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*/
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static inline bool CanBuildDepotByTileh(DiagDirection direction, Slope tileh)
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{
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return ((0x4C >> direction) & tileh) != 0;
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}
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Depot *GetDepotByTile(TileIndex tile);
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void InitializeDepots();
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void DeleteDepotHighlightOfVehicle(const Vehicle *v);
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#endif /* DEPOT_H */
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