src/industry.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 industry.h Base of all industries. */
  11
  12 #ifndef INDUSTRY_H
  13 #define INDUSTRY_H
  14
  15 #include "newgrf_storage.h"
  16 #include "subsidy_type.h"
  17 #include "industry_map.h"
  18 #include "tilearea_type.h"
  19
  20
  21 typedef Pool<Industry, IndustryID, 64, 64000> IndustryPool;
  22 extern IndustryPool _industry_pool;
  23
  24 /**
  25  * Production level maximum, minimum and default values.
  26  * It is not a value been really used in order to change, but rather an indicator
  27  * of how the industry is behaving.
  28  */
  29 enum ProductionLevels {
  30         PRODLEVEL_CLOSURE = 0x00,  ///< signal set to actually close the industry
  31         PRODLEVEL_MINIMUM = 0x04,  ///< below this level, the industry is set to be closing
  32         PRODLEVEL_DEFAULT = 0x10,  ///< default level set when the industry is created
  33         PRODLEVEL_MAXIMUM = 0x80,  ///< the industry is running at full speed
  34 };
  35
  36 /**
  37  * Defines the internal data of a functional industry.
  38  */
  39 struct Industry : IndustryPool::PoolItem<&_industry_pool> {
  40         TileArea location;                  ///< Location of the industry
  41         Town *town;                         ///< Nearest town
  42         CargoID produced_cargo[2];          ///< 2 production cargo slots
  43         uint16 produced_cargo_waiting[2];   ///< amount of cargo produced per cargo
  44         uint16 incoming_cargo_waiting[3];   ///< incoming cargo waiting to be processed
  45         byte production_rate[2];            ///< production rate for each cargo
  46         byte prod_level;                    ///< general production level
  47         CargoID accepts_cargo[3];           ///< 3 input cargo slots
  48         uint16 this_month_production[2];    ///< stats of this month's production per cargo
  49         uint16 this_month_transported[2];   ///< stats of this month's transport per cargo
  50         byte last_month_pct_transported[2]; ///< percentage transported per cargo in the last full month
  51         uint16 last_month_production[2];    ///< total units produced per cargo in the last full month
  52         uint16 last_month_transported[2];   ///< total units transported per cargo in the last full month
  53         uint16 counter;                     ///< used for animation and/or production (if available cargo)
  54
  55         IndustryType type;                  ///< type of industry.
  56         OwnerByte owner;                    ///< owner of the industry.  Which SHOULD always be (imho) OWNER_NONE
  57         byte random_colour;                 ///< randomized colour of the industry, for display purpose
  58         Year last_prod_year;                ///< last year of production
  59         byte was_cargo_delivered;           ///< flag that indicate this has been the closest industry chosen for cargo delivery by a station. see DeliverGoodsToIndustry
  60
  61         PartOfSubsidyByte part_of_subsidy;  ///< NOSAVE: is this industry a source/destination of a subsidy?
  62
  63         OwnerByte founder;                  ///< Founder of the industry
  64         Date construction_date;             ///< Date of the construction of the industry
  65         uint8 construction_type;            ///< Way the industry was constructed (@see IndustryConstructionType)
  66         Date last_cargo_accepted_at;        ///< Last day cargo was accepted by this industry
  67         byte selected_layout;               ///< Which tile layout was used when creating the industry
  68
  69         byte random_triggers;               ///< Triggers for the random
  70         uint16 random;                      ///< Random value used for randomisation of all kinds of things
  71
  72         PersistentStorage *psa;             ///< Persistent storage for NewGRF industries.
  73
  74         Industry(TileIndex tile = INVALID_TILE) : location(tile, 0, 0) {}
  75         ~Industry();
  76
  77         void RecomputeProductionMultipliers();
  78
  79         /**
  80          * Check if a given tile belongs to this industry.
  81          * @param tile The tile to check.
  82          * @return True if the tile is part of this industry.
  83          */
  84         inline bool TileBelongsToIndustry(TileIndex tile) const
  85         {
  86                 return IsTileType(tile, MP_INDUSTRY) && GetIndustryIndex(tile) == this->index;
  87         }
  88
  89         /**
  90          * Get the industry of the given tile
  91          * @param tile the tile to get the industry from
  92          * @pre IsTileType(t, MP_INDUSTRY)
  93          * @return the industry
  94          */
  95         static inline Industry *GetByTile(TileIndex tile)
  96         {
  97                 return Industry::Get(GetIndustryIndex(tile));
  98         }
  99
 100         static Industry *GetRandom();
 101         static void PostDestructor(size_t index);
 102
 103         /**
 104          * Increment the count of industries for this type.
 105          * @param type IndustryType to increment
 106          * @pre type < NUM_INDUSTRYTYPES
 107          */
 108         static inline void IncIndustryTypeCount(IndustryType type)
 109         {
 110                 assert(type < NUM_INDUSTRYTYPES);
 111                 counts[type]++;
 112         }
 113
 114         /**
 115          * Decrement the count of industries for this type.
 116          * @param type IndustryType to decrement
 117          * @pre type < NUM_INDUSTRYTYPES
 118          */
 119         static inline void DecIndustryTypeCount(IndustryType type)
 120         {
 121                 assert(type < NUM_INDUSTRYTYPES);
 122                 counts[type]--;
 123         }
 124
 125         /**
 126          * Get the count of industries for this type.
 127          * @param type IndustryType to query
 128          * @pre type < NUM_INDUSTRYTYPES
 129          */
 130         static inline uint16 GetIndustryTypeCount(IndustryType type)
 131         {
 132                 assert(type < NUM_INDUSTRYTYPES);
 133                 return counts[type];
 134         }
 135
 136         /** Resets industry counts. */
 137         static inline void ResetIndustryCounts()
 138         {
 139                 memset(&counts, 0, sizeof(counts));
 140         }
 141
 142 protected:
 143         static uint16 counts[NUM_INDUSTRYTYPES]; ///< Number of industries per type ingame
 144 };
 145
 146 void PlantRandomFarmField(const Industry *i);
 147
 148 void ReleaseDisastersTargetingIndustry(IndustryID);
 149
 150 bool IsTileForestIndustry(TileIndex tile);
 151
 152 #define FOR_ALL_INDUSTRIES_FROM(var, start) FOR_ALL_ITEMS_FROM(Industry, industry_index, var, start)
 153 #define FOR_ALL_INDUSTRIES(var) FOR_ALL_INDUSTRIES_FROM(var, 0)
 154
 155 /** Data for managing the number of industries of a single industry type. */
 156 struct IndustryTypeBuildData {
 157         uint32 probability;  ///< Relative probability of building this industry.
 158         byte   min_number;   ///< Smallest number of industries that should exist (either \c 0 or \c 1).
 159         uint16 target_count; ///< Desired number of industries of this type.
 160         uint16 max_wait;     ///< Starting number of turns to wait (copied to #wait_count).
 161         uint16 wait_count;   ///< Number of turns to wait before trying to build again.
 162
 163         void Reset();
 164
 165         bool GetIndustryTypeData(IndustryType it);
 166 };
 167
 168 /**
 169  * Data for managing the number and type of industries in the game.
 170  */
 171 struct IndustryBuildData {
 172         IndustryTypeBuildData builddata[NUM_INDUSTRYTYPES]; ///< Industry build data for every industry type.
 173         uint32 wanted_inds; ///< Number of wanted industries (bits 31-16), and a fraction (bits 15-0).
 174
 175         void Reset();
 176
 177         void SetupTargetCount();
 178         void TryBuildNewIndustry();
 179
 180         void MonthlyLoop();
 181 };
 182
 183 extern IndustryBuildData _industry_builder;
 184
 185 #endif /* INDUSTRY_H */