src/house.h

   1 /*
   2  * This file is part of OpenTTD.
   3  * 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.
   4  * 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.
   5  * 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/>.
   6  */
   7
   8 /** @file house.h definition of HouseSpec and accessors */
   9
  10 #ifndef HOUSE_H
  11 #define HOUSE_H
  12
  13 #include "cargo_type.h"
  14 #include "date_type.h"
  15 #include "house_type.h"
  16 #include "newgrf_animation_type.h"
  17 #include "newgrf_commons.h"
  18
  19 /**
  20  * Simple value that indicates the house has reached the final stage of
  21  * construction.
  22  */
  23 static const byte TOWN_HOUSE_COMPLETED = 3;
  24
  25 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.
  26
  27 static const uint HOUSE_NO_CLASS      = 0;
  28 static const HouseID NEW_HOUSE_OFFSET = 110;    ///< Offset for new houses.
  29 static const HouseID NUM_HOUSES       = 512;    ///< Total number of houses.
  30 static const HouseID INVALID_HOUSE_ID = 0xFFFF;
  31
  32 static const uint HOUSE_NUM_ACCEPTS = 16; ///< Max number of cargoes accepted by a tile
  33
  34 /**
  35  * There can only be as many classes as there are new houses, plus one for
  36  * NO_CLASS, as the original houses don't have classes.
  37  */
  38 static const uint HOUSE_CLASS_MAX  = NUM_HOUSES - NEW_HOUSE_OFFSET + 1;
  39
  40 enum BuildingFlags {
  41         TILE_NO_FLAG         =       0,
  42         TILE_SIZE_1x1        = 1U << 0,
  43         TILE_NOT_SLOPED      = 1U << 1,
  44         TILE_SIZE_2x1        = 1U << 2,
  45         TILE_SIZE_1x2        = 1U << 3,
  46         TILE_SIZE_2x2        = 1U << 4,
  47         BUILDING_IS_ANIMATED = 1U << 5,
  48         BUILDING_IS_CHURCH   = 1U << 6,
  49         BUILDING_IS_STADIUM  = 1U << 7,
  50         BUILDING_HAS_1_TILE  = TILE_SIZE_1x1 | TILE_SIZE_2x1 | TILE_SIZE_1x2 | TILE_SIZE_2x2,
  51         BUILDING_HAS_2_TILES = TILE_SIZE_2x1 | TILE_SIZE_1x2 | TILE_SIZE_2x2,
  52         BUILDING_2_TILES_X   = TILE_SIZE_2x1 | TILE_SIZE_2x2,
  53         BUILDING_2_TILES_Y   = TILE_SIZE_1x2 | TILE_SIZE_2x2,
  54         BUILDING_HAS_4_TILES = TILE_SIZE_2x2,
  55 };
  56 DECLARE_ENUM_AS_BIT_SET(BuildingFlags)
  57
  58 enum HouseZonesBits {
  59         HZB_BEGIN     = 0,
  60         HZB_TOWN_EDGE = 0,
  61         HZB_TOWN_OUTSKIRT,
  62         HZB_TOWN_OUTER_SUBURB,
  63         HZB_TOWN_INNER_SUBURB,
  64         HZB_TOWN_CENTRE,
  65         HZB_END,
  66 };
  67 static_assert(HZB_END == 5);
  68
  69 DECLARE_POSTFIX_INCREMENT(HouseZonesBits)
  70
  71 enum HouseZones {                  ///< Bit  Value       Meaning
  72         HZ_NOZNS             = 0x0000,  ///<       0          This is just to get rid of zeros, meaning none
  73         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
  74         HZ_ZON2              = 1U << HZB_TOWN_OUTSKIRT,
  75         HZ_ZON3              = 1U << HZB_TOWN_OUTER_SUBURB,
  76         HZ_ZON4              = 1U << HZB_TOWN_INNER_SUBURB,
  77         HZ_ZON5              = 1U << HZB_TOWN_CENTRE,  ///<  center of town
  78         HZ_ZONALL            = 0x001F,  ///<       1F         This is just to englobe all above types at once
  79         HZ_SUBARTC_ABOVE     = 0x0800,  ///< 11    800        can appear in sub-arctic climate above the snow line
  80         HZ_TEMP              = 0x1000,  ///< 12   1000        can appear in temperate climate
  81         HZ_SUBARTC_BELOW     = 0x2000,  ///< 13   2000        can appear in sub-arctic climate below the snow line
  82         HZ_SUBTROPIC         = 0x4000,  ///< 14   4000        can appear in subtropical climate
  83         HZ_TOYLND            = 0x8000,  ///< 15   8000        can appear in toyland climate
  84         HZ_CLIMALL           = 0xF800,  ///< Bitmask of all climate bits
  85 };
  86 DECLARE_ENUM_AS_BIT_SET(HouseZones)
  87
  88 enum HouseExtraFlags {
  89         NO_EXTRA_FLAG            =       0,
  90         BUILDING_IS_HISTORICAL   = 1U << 0,  ///< this house will only appear during town generation in random games, thus the historical
  91         BUILDING_IS_PROTECTED    = 1U << 1,  ///< towns and AI will not remove this house, while human players will be able to
  92         SYNCHRONISED_CALLBACK_1B = 1U << 2,  ///< synchronized callback 1B will be performed, on multi tile houses
  93         CALLBACK_1A_RANDOM_BITS  = 1U << 3,  ///< callback 1A needs random bits
  94 };
  95
  96 DECLARE_ENUM_AS_BIT_SET(HouseExtraFlags)
  97
  98 struct HouseSpec {
  99         /* Standard properties */
 100         Year min_year;                            ///< introduction year of the house
 101         Year max_year;                            ///< last year it can be built
 102         byte population;                          ///< population (Zero on other tiles in multi tile house.)
 103         byte removal_cost;                        ///< cost multiplier for removing it
 104         StringID building_name;                   ///< building name
 105         uint16 remove_rating_decrease;            ///< rating decrease if removed
 106         byte mail_generation;                     ///< mail generation multiplier (tile based, as the acceptances below)
 107         byte cargo_acceptance[HOUSE_NUM_ACCEPTS]; ///< acceptance level for the cargo slots
 108         CargoID accepts_cargo[HOUSE_NUM_ACCEPTS]; ///< input cargo slots
 109         BuildingFlags building_flags;             ///< some flags that describe the house (size, stadium etc...)
 110         HouseZones building_availability;         ///< where can it be built (climates, zones)
 111         bool enabled;                             ///< the house is available to build (true by default, but can be disabled by newgrf)
 112
 113         /* NewHouses properties */
 114         GRFFileProps grf_prop;                    ///< Properties related the the grf file
 115         uint16 callback_mask;                     ///< Bitmask of house callbacks that have to be called
 116         byte random_colour[4];                    ///< 4 "random" colours
 117         byte probability;                         ///< Relative probability of appearing (16 is the standard value)
 118         HouseExtraFlags extra_flags;              ///< some more flags
 119         HouseClassID class_id;                    ///< defines the class this house has (not grf file based)
 120         AnimationInfo animation;                  ///< information about the animation.
 121         byte processing_time;                     ///< Periodic refresh multiplier
 122         byte minimum_life;                        ///< The minimum number of years this house will survive before the town rebuilds it
 123         CargoTypes watched_cargoes;               ///< Cargo types watched for acceptance.
 124
 125         Money GetRemovalCost() const;
 126
 127         static inline HouseSpec *Get(size_t house_id)
 128         {
 129                 assert(house_id < NUM_HOUSES);
 130                 extern HouseSpec _house_specs[];
 131                 return &_house_specs[house_id];
 132         }
 133 };
 134
 135 /**
 136  * Do HouseID translation for NewGRFs.
 137  * @param hid the HouseID to get the override for.
 138  * @return the HouseID to actually work with.
 139  */
 140 static inline HouseID GetTranslatedHouseID(HouseID hid)
 141 {
 142         const HouseSpec *hs = HouseSpec::Get(hid);
 143         return hs->grf_prop.override == INVALID_HOUSE_ID ? hid : hs->grf_prop.override;
 144 }
 145
 146 #endif /* HOUSE_H */