src/newgrf_airport.h

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file newgrf_airport.h NewGRF handling of airports. */
  11
  12 #ifndef NEWGRF_AIRPORT_H
  13 #define NEWGRF_AIRPORT_H
  14
  15 #include "airport.h"
  16 #include "date_type.h"
  17 #include "newgrf_class.h"
  18 #include "newgrf_commons.h"
  19 #include "tilearea_type.h"
  20
  21 /** Copy from station_map.h */
  22 typedef byte StationGfx;
  23
  24 /** Tile-offset / AirportTileID pair. */
  25 struct AirportTileTable {
  26         TileIndexDiffC ti; ///< Tile offset from  the top-most airport tile.
  27         StationGfx gfx;    ///< AirportTile to use for this tile.
  28 };
  29
  30 /** Iterator to iterate over all tiles belonging to an airport spec. */
  31 class AirportTileTableIterator : public TileIterator {
  32 private:
  33         const AirportTileTable *att; ///< The offsets.
  34         TileIndex base_tile;         ///< The tile we base the offsets off.
  35
  36 public:
  37         /**
  38          * Construct the iterator.
  39          * @param att The TileTable we want to iterate over.
  40          * @param base_tile The basetile for all offsets.
  41          */
  42         AirportTileTableIterator(const AirportTileTable *att, TileIndex base_tile) : TileIterator(base_tile + ToTileIndexDiff(att->ti)), att(att), base_tile(base_tile)
  43         {
  44         }
  45
  46         inline TileIterator& operator ++()
  47         {
  48                 this->att++;
  49                 if (this->att->ti.x == -0x80) {
  50                         this->tile = INVALID_TILE;
  51                 } else {
  52                         this->tile = this->base_tile + ToTileIndexDiff(this->att->ti);
  53                 }
  54                 return *this;
  55         }
  56
  57         /** Get the StationGfx for the current tile. */
  58         StationGfx GetStationGfx() const
  59         {
  60                 return this->att->gfx;
  61         }
  62
  63         virtual AirportTileTableIterator *Clone() const
  64         {
  65                 return new AirportTileTableIterator(*this);
  66         }
  67 };
  68
  69 /** List of default airport classes. */
  70 enum AirportClassID {
  71         APC_BEGIN     = 0,  ///< Lowest valid airport class id
  72         APC_SMALL     = 0,  ///< id for small airports class
  73         APC_LARGE,          ///< id for large airports class
  74         APC_HUB,            ///< id for hub airports class
  75         APC_HELIPORT,       ///< id for heliports
  76         APC_MAX       = 16, ///< maximum number of airport classes
  77 };
  78
  79 /** Allow incrementing of AirportClassID variables */
  80 DECLARE_POSTFIX_INCREMENT(AirportClassID)
  81
  82 /** TTDP airport types. Used to map our types to TTDPatch's */
  83 enum TTDPAirportType {
  84         ATP_TTDP_SMALL,    ///< Same as AT_SMALL
  85         ATP_TTDP_LARGE,    ///< Same as AT_LARGE
  86         ATP_TTDP_HELIPORT, ///< Same as AT_HELIPORT
  87         ATP_TTDP_OILRIG,   ///< Same as AT_OILRIG
  88 };
  89
  90 /** A list of all hangar tiles in an airport */
  91 struct HangarTileTable {
  92         TileIndexDiffC ti; ///< Tile offset from the top-most airport tile.
  93         Direction dir;     ///< Direction of the exit.
  94         byte hangar_num;   ///< The hangar to which this tile belongs.
  95 };
  96
  97 /**
  98  * Defines the data structure for an airport.
  99  */
 100 struct AirportSpec {
 101         const struct AirportFTAClass *fsm;     ///< the finite statemachine for the default airports
 102         const AirportTileTable * const *table; ///< list of the tiles composing the airport
 103         const Direction *rotation;             ///< the rotation of each tiletable
 104         byte num_table;                        ///< number of elements in the table
 105         const HangarTileTable *depot_table;    ///< gives the position of the depots on the airports
 106         byte nof_depots;                       ///< the number of hangar tiles in this airport
 107         byte size_x;                           ///< size of airport in x direction
 108         byte size_y;                           ///< size of airport in y direction
 109         byte noise_level;                      ///< noise that this airport generates
 110         byte catchment;                        ///< catchment area of this airport
 111         Year min_year;                         ///< first year the airport is available
 112         Year max_year;                         ///< last year the airport is available
 113         StringID name;                         ///< name of this airport
 114         TTDPAirportType ttd_airport_type;      ///< ttdpatch airport type (Small/Large/Helipad/Oilrig)
 115         AirportClassID cls_id;                 ///< the class to which this airport type belongs
 116         SpriteID preview_sprite;               ///< preview sprite for this airport
 117         uint16 maintenance_cost;               ///< maintenance cost multiplier
 118         /* Newgrf data */
 119         bool enabled;                          ///< Entity still available (by default true). Newgrf can disable it, though.
 120         struct GRFFileProps grf_prop;          ///< Properties related to the grf file.
 121
 122         static const AirportSpec *Get(byte type);
 123         static AirportSpec *GetWithoutOverride(byte type);
 124
 125         bool IsAvailable() const;
 126
 127         static void ResetAirports();
 128
 129         /** Get the index of this spec. */
 130         byte GetIndex() const
 131         {
 132                 assert(this >= specs && this < endof(specs));
 133                 return (byte)(this - specs);
 134         }
 135
 136         static const AirportSpec dummy; ///< The dummy airport.
 137
 138 private:
 139         static AirportSpec specs[NUM_AIRPORTS]; ///< Specs of the airports.
 140 };
 141
 142 /** Information related to airport classes. */
 143 typedef NewGRFClass<AirportSpec, AirportClassID, APC_MAX> AirportClass;
 144
 145 void BindAirportSpecs();
 146
 147 StringID GetAirportTextCallback(const AirportSpec *as, byte layout, uint16 callback);
 148
 149 #endif /* NEWGRF_AIRPORT_H */