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@@ -9,37 +9,18 @@
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#ifndef DATE_TYPE_H
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#define DATE_TYPE_H
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#include "timer/timer_game_calendar.h"
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typedef int32_t Ticks; ///< The type to store ticks in
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/**
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* 1 day is 74 ticks; TimerGameCalendar::date_fract used to be uint16_t and incremented by 885. On
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* an overflow the new day begun and 65535 / 885 = 74.
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* 1 tick is approximately 27 ms.
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* 1 day is thus about 2 seconds (74 * 27 = 1998) on a machine that can run OpenTTD normally
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*/
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static const int DAY_TICKS = 74; ///< ticks per day
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static const int DAYS_IN_YEAR = 365; ///< days per year
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static const int DAYS_IN_LEAP_YEAR = 366; ///< sometimes, you need one day more...
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static const int MONTHS_IN_YEAR = 12; ///< months per year
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static const int SECONDS_PER_DAY = 2; ///< approximate seconds per day, not for precise calculations
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static const int STATION_RATING_TICKS = 185; ///< cycle duration for updating station rating
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static const int STATION_ACCEPTANCE_TICKS = 250; ///< cycle duration for updating station acceptance
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static const int STATION_LINKGRAPH_TICKS = 504; ///< cycle duration for cleaning dead links
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static const int CARGO_AGING_TICKS = 185; ///< cycle duration for aging cargo
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static const int INDUSTRY_PRODUCE_TICKS = 256; ///< cycle duration for industry production
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static const int TOWN_GROWTH_TICKS = 70; ///< cycle duration for towns trying to grow. (this originates from the size of the town array in TTD
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static const int INDUSTRY_CUT_TREE_TICKS = INDUSTRY_PRODUCE_TICKS * 2; ///< cycle duration for lumber mill's extra action
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/*
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* ORIGINAL_BASE_YEAR, ORIGINAL_MAX_YEAR and DAYS_TILL_ORIGINAL_BASE_YEAR are
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* primarily used for loading newgrf and savegame data and returning some
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* newgrf (callback) functions that were in the original (TTD) inherited
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* format, where 'TimerGameCalendar::date == 0' meant that it was 1920-01-01.
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*/
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@@ -95,9 +76,8 @@ static constexpr TimerGameCalendar::Year
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/** The date of the last day of the max year. */
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static constexpr TimerGameCalendar::Date MAX_DATE = DateAtStartOfYear(MAX_YEAR + 1) - 1;
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static constexpr TimerGameCalendar::Year INVALID_YEAR = -1; ///< Representation of an invalid year
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static constexpr TimerGameCalendar::Date INVALID_DATE = -1; ///< Representation of an invalid date
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static constexpr Ticks INVALID_TICKS = -1; ///< Representation of an invalid number of ticks
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#endif /* DATE_TYPE_H */
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