00001 /* $Id$ */ 00002 00003 /* 00004 * This file is part of OpenTTD. 00005 * 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. 00006 * 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. 00007 * 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/>. 00008 */ 00009 00012 #ifndef DATE_TYPE_H 00013 #define DATE_TYPE_H 00014 00015 00016 typedef int32 Date; 00017 typedef uint16 DateFract; 00018 typedef int32 Ticks; 00019 typedef int64 DateTicks; 00020 typedef int32 Minutes; 00021 00022 typedef int32 Year; 00023 typedef uint8 Month; 00024 typedef uint8 Day; 00025 00032 static const int ORIG_DAY_TICKS = 74; 00033 static const int DAYS_IN_YEAR = 365; 00034 static const int DAYS_IN_LEAP_YEAR = 366; 00035 00039 extern uint8 _date_daylength_factor; 00040 00044 #define DAY_TICKS (ORIG_DAY_TICKS * _date_daylength_factor) 00045 00046 #define DATE_UNIT_SIZE (_settings_client.gui.time_in_minutes ? _settings_client.gui.ticks_per_minute : DAY_TICKS) 00047 00048 static const int STATION_RATING_TICKS = 185; 00049 static const int STATION_ACCEPTANCE_TICKS = 250; 00050 static const int CARGO_AGING_TICKS = 185; 00051 static const int INDUSTRY_PRODUCE_TICKS = 256; 00052 static const int INDUSTRY_CUT_TREE_TICKS = INDUSTRY_PRODUCE_TICKS * 2; 00053 00054 #define TOWN_GROWTH_TICKS (70 * _date_daylength_factor) ///< cycle duration for towns trying to grow. (this originates from the size of the town array in TTD 00055 00056 /* 00057 * ORIGINAL_BASE_YEAR, ORIGINAL_MAX_YEAR and DAYS_TILL_ORIGINAL_BASE_YEAR are 00058 * primarily used for loading newgrf and savegame data and returning some 00059 * newgrf (callback) functions that were in the original (TTD) inherited 00060 * format, where '_date == 0' meant that it was 1920-01-01. 00061 */ 00062 00064 static const Year ORIGINAL_BASE_YEAR = 1920; 00066 static const Year ORIGINAL_END_YEAR = 2051; 00068 static const Year ORIGINAL_MAX_YEAR = 2090; 00069 00082 #define LEAP_YEARS_TILL(year) ((year) == 0 ? 0 : ((year) - 1) / 4 - ((year) - 1) / 100 + ((year) - 1) / 400 + 1) 00083 00089 #define DAYS_TILL(year) (DAYS_IN_YEAR * (year) + LEAP_YEARS_TILL(year)) 00090 00095 #define DAYS_TILL_ORIGINAL_BASE_YEAR DAYS_TILL(ORIGINAL_BASE_YEAR) 00096 00098 static const Year MIN_YEAR = 0; 00099 00101 static const Year DEF_START_YEAR = 1950; 00102 00107 static const Year MAX_YEAR = 5000000; 00108 00110 #define MAX_DAY (DAYS_TILL(MAX_YEAR + 1) - 1) 00111 00113 #define MINUTES_DAY(minutes) (minutes / 1440) 00114 00116 #define MINUTES_HOUR(minutes) ((minutes / 60) % 24) 00117 00119 #define MINUTES_MINUTE(minutes) (minutes % 60) 00120 00122 #define MINUTES_DATE(day, hour, minute) ((day * 1440) + (hour * 60) + minute) 00123 00125 #define CURRENT_MINUTE ((((DateTicks)_date * DAY_TICKS) + _date_fract) / _settings_client.gui.ticks_per_minute) 00126 00131 struct YearMonthDay { 00132 Year year; 00133 Month month; 00134 Day day; 00135 }; 00136 00137 static const Year INVALID_YEAR = -1; 00138 static const Date INVALID_DATE = -1; 00139 static const Ticks INVALID_TICKS = -1; 00140 00141 #endif /* DATE_TYPE_H */