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