src/economy_type.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 economy_type.h Types related to the economy. */
  11
  12 #ifndef ECONOMY_TYPE_H
  13 #define ECONOMY_TYPE_H
  14
  15 #include "core/overflowsafe_type.hpp"
  16 #include "core/enum_type.hpp"
  17
  18 typedef OverflowSafeInt64 Money;
  19
  20 /** Data of the economy. */
  21 struct Economy {
  22         Money max_loan;                       ///< NOSAVE: Maximum possible loan
  23         int16 fluct;                          ///< Economy fluctuation status
  24         byte interest_rate;                   ///< Interest
  25         byte infl_amount;                     ///< inflation amount
  26         byte infl_amount_pr;                  ///< inflation rate for payment rates
  27         uint32 industry_daily_change_counter; ///< Bits 31-16 are number of industry to be performed, 15-0 are fractional collected daily
  28         uint32 industry_daily_increment;      ///< The value which will increment industry_daily_change_counter. Computed value. NOSAVE
  29         uint64 inflation_prices;              ///< Cumulated inflation of prices since game start; 16 bit fractional part
  30         uint64 inflation_payment;             ///< Cumulated inflation of cargo paypent since game start; 16 bit fractional part
  31
  32         /* Old stuff for savegame conversion only */
  33         Money old_max_loan_unround;           ///< Old: Unrounded max loan
  34         uint16 old_max_loan_unround_fract;    ///< Old: Fraction of the unrounded max loan
  35 };
  36
  37 /** Score categories in the detailed performance rating. */
  38 enum ScoreID {
  39         SCORE_BEGIN      = 0,
  40         SCORE_VEHICLES   = 0,
  41         SCORE_STATIONS   = 1,
  42         SCORE_MIN_PROFIT = 2,
  43         SCORE_MIN_INCOME = 3,
  44         SCORE_MAX_INCOME = 4,
  45         SCORE_DELIVERED  = 5,
  46         SCORE_CARGO      = 6,
  47         SCORE_MONEY      = 7,
  48         SCORE_LOAN       = 8,
  49         SCORE_TOTAL      = 9,  ///< This must always be the last entry
  50         SCORE_END        = 10, ///< How many scores are there..
  51
  52         SCORE_MAX = 1000,      ///< The max score that can be in the performance history
  53         /* the scores together of score_info is allowed to be more! */
  54 };
  55 DECLARE_POSTFIX_INCREMENT(ScoreID)
  56
  57 /** Data structure for storing how the score is computed for a single score id. */
  58 struct ScoreInfo {
  59         int needed; ///< How much you need to get the perfect score
  60         int score;  ///< How much score it will give
  61 };
  62
  63 /**
  64  * Enumeration of all base prices for use with #Prices.
  65  * The prices are ordered as they are expected by NewGRF cost multipliers, so don't shuffle them.
  66  */
  67 enum Price {
  68         PR_BEGIN = 0,
  69         PR_STATION_VALUE = 0,
  70         PR_BUILD_RAIL,
  71         PR_BUILD_ROAD,
  72         PR_BUILD_SIGNALS,
  73         PR_BUILD_BRIDGE,
  74         PR_BUILD_DEPOT_TRAIN,
  75         PR_BUILD_DEPOT_ROAD,
  76         PR_BUILD_DEPOT_SHIP,
  77         PR_BUILD_TUNNEL,
  78         PR_BUILD_STATION_RAIL,
  79         PR_BUILD_STATION_RAIL_LENGTH,
  80         PR_BUILD_STATION_AIRPORT,
  81         PR_BUILD_STATION_BUS,
  82         PR_BUILD_STATION_TRUCK,
  83         PR_BUILD_STATION_DOCK,
  84         PR_BUILD_VEHICLE_TRAIN,
  85         PR_BUILD_VEHICLE_WAGON,
  86         PR_BUILD_VEHICLE_AIRCRAFT,
  87         PR_BUILD_VEHICLE_ROAD,
  88         PR_BUILD_VEHICLE_SHIP,
  89         PR_BUILD_TREES,
  90         PR_TERRAFORM,
  91         PR_CLEAR_GRASS,
  92         PR_CLEAR_ROUGH,
  93         PR_CLEAR_ROCKS,
  94         PR_CLEAR_FIELDS,
  95         PR_CLEAR_TREES,
  96         PR_CLEAR_RAIL,
  97         PR_CLEAR_SIGNALS,
  98         PR_CLEAR_BRIDGE,
  99         PR_CLEAR_DEPOT_TRAIN,
 100         PR_CLEAR_DEPOT_ROAD,
 101         PR_CLEAR_DEPOT_SHIP,
 102         PR_CLEAR_TUNNEL,
 103         PR_CLEAR_WATER,
 104         PR_CLEAR_STATION_RAIL,
 105         PR_CLEAR_STATION_AIRPORT,
 106         PR_CLEAR_STATION_BUS,
 107         PR_CLEAR_STATION_TRUCK,
 108         PR_CLEAR_STATION_DOCK,
 109         PR_CLEAR_HOUSE,
 110         PR_CLEAR_ROAD,
 111         PR_RUNNING_TRAIN_STEAM,
 112         PR_RUNNING_TRAIN_DIESEL,
 113         PR_RUNNING_TRAIN_ELECTRIC,
 114         PR_RUNNING_AIRCRAFT,
 115         PR_RUNNING_ROADVEH,
 116         PR_RUNNING_SHIP,
 117         PR_BUILD_INDUSTRY,
 118         PR_CLEAR_INDUSTRY,
 119         PR_BUILD_OBJECT,
 120         PR_CLEAR_OBJECT,
 121         PR_BUILD_WAYPOINT_RAIL,
 122         PR_CLEAR_WAYPOINT_RAIL,
 123         PR_BUILD_WAYPOINT_BUOY,
 124         PR_CLEAR_WAYPOINT_BUOY,
 125         PR_TOWN_ACTION,
 126         PR_BUILD_FOUNDATION,
 127         PR_BUILD_INDUSTRY_RAW,
 128         PR_BUILD_TOWN,
 129         PR_BUILD_CANAL,
 130         PR_CLEAR_CANAL,
 131         PR_BUILD_AQUEDUCT,
 132         PR_CLEAR_AQUEDUCT,
 133         PR_BUILD_LOCK,
 134         PR_CLEAR_LOCK,
 135         PR_INFRASTRUCTURE_RAIL,
 136         PR_INFRASTRUCTURE_ROAD,
 137         PR_INFRASTRUCTURE_WATER,
 138         PR_INFRASTRUCTURE_STATION,
 139         PR_INFRASTRUCTURE_AIRPORT,
 140
 141         PR_END,
 142         INVALID_PRICE = 0xFF
 143 };
 144 DECLARE_POSTFIX_INCREMENT(Price)
 145
 146 typedef Money Prices[PR_END]; ///< Prices of everything. @see Price
 147 typedef int8 PriceMultipliers[PR_END];
 148
 149 /** Types of expenses. */
 150 enum ExpensesType {
 151         EXPENSES_CONSTRUCTION =  0,   ///< Construction costs.
 152         EXPENSES_NEW_VEHICLES,        ///< New vehicles.
 153         EXPENSES_TRAIN_RUN,           ///< Running costs trains.
 154         EXPENSES_ROADVEH_RUN,         ///< Running costs road vehicles.
 155         EXPENSES_AIRCRAFT_RUN,        ///< Running costs aircrafts.
 156         EXPENSES_SHIP_RUN,            ///< Running costs ships.
 157         EXPENSES_PROPERTY,            ///< Property costs.
 158         EXPENSES_TRAIN_INC,           ///< Income from trains.
 159         EXPENSES_ROADVEH_INC,         ///< Income from road vehicles.
 160         EXPENSES_AIRCRAFT_INC,        ///< Income from aircrafts.
 161         EXPENSES_SHIP_INC,            ///< Income from ships.
 162         EXPENSES_LOAN_INT,            ///< Interest payments over the loan.
 163         EXPENSES_OTHER,               ///< Other expenses.
 164         EXPENSES_END,                 ///< Number of expense types.
 165         INVALID_EXPENSES      = 0xFF, ///< Invalid expense type.
 166 };
 167
 168 /** Define basic enum properties for ExpensesType */
 169 template <> struct EnumPropsT<ExpensesType> : MakeEnumPropsT<ExpensesType, byte, EXPENSES_CONSTRUCTION, EXPENSES_END, INVALID_EXPENSES, 8> {};
 170 typedef TinyEnumT<ExpensesType> ExpensesTypeByte; ///< typedefing-enumification of ExpensesType
 171
 172 /**
 173  * Categories of a price bases.
 174  */
 175 enum PriceCategory {
 176         PCAT_NONE,         ///< Not affected by difficulty settings
 177         PCAT_RUNNING,      ///< Price is affected by "vehicle running cost" difficulty setting
 178         PCAT_CONSTRUCTION, ///< Price is affected by "construction cost" difficulty setting
 179 };
 180
 181 /**
 182  * Describes properties of price bases.
 183  */
 184 struct PriceBaseSpec {
 185         Money start_price;      ///< Default value at game start, before adding multipliers.
 186         PriceCategory category; ///< Price is affected by certain difficulty settings.
 187         uint grf_feature;       ///< GRF Feature that decides whether price multipliers apply locally or globally, #GSF_END if none.
 188         Price fallback_price;   ///< Fallback price multiplier for new prices but old grfs.
 189 };
 190
 191 /** The "steps" in loan size, in British Pounds! */
 192 static const int LOAN_INTERVAL = 10000;
 193
 194 /**
 195  * Maximum inflation (including fractional part) without causing overflows in int64 price computations.
 196  * This allows for 32 bit base prices (21 are currently needed).
 197  * Considering the sign bit and 16 fractional bits, there are 15 bits left.
 198  * 170 years of 4% inflation result in a inflation of about 822, so 10 bits are actually enough.
 199  * Note that NewGRF multipliers share the 16 fractional bits.
 200  * @see MAX_PRICE_MODIFIER
 201  */
 202 static const uint64 MAX_INFLATION = (1ull << (63 - 32)) - 1;
 203
 204 /**
 205  * Maximum NewGRF price modifiers.
 206  * Increasing base prices by factor 65536 should be enough.
 207  * @see MAX_INFLATION
 208  */
 209 static const int MIN_PRICE_MODIFIER = -8;
 210 static const int MAX_PRICE_MODIFIER = 16;
 211 static const int INVALID_PRICE_MODIFIER = MIN_PRICE_MODIFIER - 1;
 212
 213 /** Multiplier for how many regular track bits a tunnel/bridge counts. */
 214 static const uint TUNNELBRIDGE_TRACKBIT_FACTOR = 4;
 215 /** Multiplier for how many regular track bits a level crossing counts. */
 216 static const uint LEVELCROSSING_TRACKBIT_FACTOR = 2;
 217 /** Multiplier for how many regular tiles a lock counts. */
 218 static const uint LOCK_DEPOT_TILE_FACTOR = 2;
 219
 220 struct CargoPayment;
 221 typedef uint32 CargoPaymentID;
 222
 223 #endif /* ECONOMY_TYPE_H */