src/house.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 house.h definition of HouseSpec and accessors */
  11
  12 #ifndef HOUSE_H
  13 #define HOUSE_H
  14
  15 #include "cargo_type.h"
  16 #include "date_type.h"
  17 #include "house_type.h"
  18 #include "newgrf_animation_type.h"
  19 #include "newgrf_commons.h"
  20 #include "map/house.h"
  21
  22 static const HouseID NUM_HOUSES_PER_GRF = 255;    ///< Number of supported houses per NewGRF; limited to 255 to allow extending Action3 with an extended byte later on.
  23
  24 static const uint HOUSE_NO_CLASS      = 0;
  25 static const HouseID NEW_HOUSE_OFFSET = 110;    ///< Offset for new houses.
  26 static const HouseID NUM_HOUSES       = 512;    ///< Total number of houses.
  27 static const HouseID INVALID_HOUSE_ID = 0xFFFF;
  28
  29 /**
  30  * There can only be as many classes as there are new houses, plus one for
  31  * NO_CLASS, as the original houses don't have classes.
  32  */
  33 static const uint HOUSE_CLASS_MAX  = NUM_HOUSES - NEW_HOUSE_OFFSET + 1;
  34
  35 enum BuildingFlags {
  36         TILE_NO_FLAG         =       0,
  37         TILE_SIZE_1x1        = 1U << 0,
  38         TILE_NOT_SLOPED      = 1U << 1,
  39         TILE_SIZE_2x1        = 1U << 2,
  40         TILE_SIZE_1x2        = 1U << 3,
  41         TILE_SIZE_2x2        = 1U << 4,
  42         BUILDING_IS_ANIMATED = 1U << 5,
  43         BUILDING_IS_CHURCH   = 1U << 6,
  44         BUILDING_IS_STADIUM  = 1U << 7,
  45         BUILDING_HAS_1_TILE  = TILE_SIZE_1x1 | TILE_SIZE_2x1 | TILE_SIZE_1x2 | TILE_SIZE_2x2,
  46         BUILDING_HAS_2_TILES = TILE_SIZE_2x1 | TILE_SIZE_1x2 | TILE_SIZE_2x2,
  47         BUILDING_2_TILES_X   = TILE_SIZE_2x1 | TILE_SIZE_2x2,
  48         BUILDING_2_TILES_Y   = TILE_SIZE_1x2 | TILE_SIZE_2x2,
  49         BUILDING_HAS_4_TILES = TILE_SIZE_2x2,
  50 };
  51 DECLARE_ENUM_AS_BIT_SET(BuildingFlags)
  52
  53 enum HouseZonesBits {
  54         HZB_BEGIN     = 0,
  55         HZB_TOWN_EDGE = 0,
  56         HZB_TOWN_OUTSKIRT,
  57         HZB_TOWN_OUTER_SUBURB,
  58         HZB_TOWN_INNER_SUBURB,
  59         HZB_TOWN_CENTRE,
  60         HZB_END,
  61 };
  62 assert_compile(HZB_END == 5);
  63
  64 DECLARE_POSTFIX_INCREMENT(HouseZonesBits)
  65
  66 enum HouseZones {                  ///< Bit  Value       Meaning
  67         HZ_NOZNS             = 0x0000,  ///<       0          This is just to get rid of zeros, meaning none
  68         HZ_ZON1              = 1U << HZB_TOWN_EDGE,    ///< 0..4 1,2,4,8,10  which town zones the building can be built in, Zone1 been the further suburb
  69         HZ_ZON2              = 1U << HZB_TOWN_OUTSKIRT,
  70         HZ_ZON3              = 1U << HZB_TOWN_OUTER_SUBURB,
  71         HZ_ZON4              = 1U << HZB_TOWN_INNER_SUBURB,
  72         HZ_ZON5              = 1U << HZB_TOWN_CENTRE,  ///<  center of town
  73         HZ_ZONALL            = 0x001F,  ///<       1F         This is just to englobe all above types at once
  74         HZ_SUBARTC_ABOVE     = 0x0800,  ///< 11    800        can appear in sub-arctic climate above the snow line
  75         HZ_TEMP              = 0x1000,  ///< 12   1000        can appear in temperate climate
  76         HZ_SUBARTC_BELOW     = 0x2000,  ///< 13   2000        can appear in sub-arctic climate below the snow line
  77         HZ_SUBTROPIC         = 0x4000,  ///< 14   4000        can appear in subtropical climate
  78         HZ_TOYLND            = 0x8000,  ///< 15   8000        can appear in toyland climate
  79         HZ_CLIMALL           = 0xF800,  ///< Bitmask of all climate bits
  80 };
  81 DECLARE_ENUM_AS_BIT_SET(HouseZones)
  82
  83 enum HouseExtraFlags {
  84         NO_EXTRA_FLAG            =       0,
  85         BUILDING_IS_HISTORICAL   = 1U << 0,  ///< this house will only appear during town generation in random games, thus the historical
  86         BUILDING_IS_PROTECTED    = 1U << 1,  ///< towns and AI will not remove this house, while human players will be able to
  87         SYNCHRONISED_CALLBACK_1B = 1U << 2,  ///< synchronized callback 1B will be performed, on multi tile houses
  88         CALLBACK_1A_RANDOM_BITS  = 1U << 3,  ///< callback 1A needs random bits
  89 };
  90
  91 DECLARE_ENUM_AS_BIT_SET(HouseExtraFlags)
  92
  93 struct HouseSpec {
  94         /* Standard properties */
  95         Year min_year;                     ///< introduction year of the house
  96         Year max_year;                     ///< last year it can be built
  97         byte population;                   ///< population (Zero on other tiles in multi tile house.)
  98         byte removal_cost;                 ///< cost multiplier for removing it
  99         StringID building_name;            ///< building name
 100         uint16 remove_rating_decrease;     ///< rating decrease if removed
 101         byte mail_generation;              ///< mail generation multiplier (tile based, as the acceptances below)
 102         byte cargo_acceptance[3];          ///< acceptance level for the cargo slots
 103         CargoID accepts_cargo[3];          ///< 3 input cargo slots
 104         BuildingFlags building_flags;      ///< some flags that describe the house (size, stadium etc...)
 105         HouseZones building_availability;  ///< where can it be built (climates, zones)
 106         bool enabled;                      ///< the house is available to build (true by default, but can be disabled by newgrf)
 107
 108         /* NewHouses properties */
 109         GRFFileProps grf_prop;             ///< Properties related the the grf file
 110         uint16 callback_mask;              ///< Bitmask of house callbacks that have to be called
 111         byte random_colour[4];             ///< 4 "random" colours
 112         byte probability;                  ///< Relative probability of appearing (16 is the standard value)
 113         HouseExtraFlags extra_flags;       ///< some more flags
 114         HouseClassID class_id;             ///< defines the class this house has (not grf file based)
 115         AnimationInfo animation;           ///< information about the animation.
 116         byte processing_time;              ///< Periodic refresh multiplier
 117         byte minimum_life;                 ///< The minimum number of years this house will survive before the town rebuilds it
 118         uint32 watched_cargoes;            ///< Cargo types watched for acceptance.
 119
 120         Money GetRemovalCost() const;
 121
 122         static inline HouseSpec *Get(size_t house_id)
 123         {
 124                 assert(house_id < NUM_HOUSES);
 125                 extern HouseSpec _house_specs[];
 126                 return &_house_specs[house_id];
 127         }
 128 };
 129
 130 /**
 131  * Do HouseID translation for NewGRFs.
 132  * @param hid the HouseID to get the override for.
 133  * @return the HouseID to actually work with.
 134  */
 135 static inline HouseID GetTranslatedHouseID(HouseID hid)
 136 {
 137         const HouseSpec *hs = HouseSpec::Get(hid);
 138         return hs->grf_prop.override == INVALID_HOUSE_ID ? hid : hs->grf_prop.override;
 139 }
 140
 141 /**
 142  * Get the type of this house, which is an index into the house spec array
 143  * @param t the tile
 144  * @pre IsHouseTile(t)
 145  * @return house type
 146  */
 147 static inline HouseID GetHouseType(TileIndex t)
 148 {
 149         return GetTranslatedHouseID(GetCleanHouseType(t));
 150 }
 151
 152 void DrawHouseImage (HouseID house_id, BlitArea *dpi, int left, int top, int right, int bottom);
 153
 154 #endif /* HOUSE_H */