mirror of https://github.com/OpenTTD/OpenTTD.git
56 lines
2.5 KiB
C++
56 lines
2.5 KiB
C++
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file timer_game_economy.h Definition of the game-economy-timer */
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#ifndef TIMER_GAME_ECONOMY_H
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#define TIMER_GAME_ECONOMY_H
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#include "../core/strong_typedef_type.hpp"
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#include "timer_game_common.h"
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/**
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* Timer that is increased every 27ms, and counts towards economy time units, expressed in days / months / years.
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*
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* For now, this is kept in sync with the calendar date, so the amount of days in a month depends on the month and year (leap-years).
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* There are always 74 ticks in a day (and with 27ms, this makes 1 day 1.998 seconds).
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*
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* Economy time is used for the regular pace of the game, including:
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* - Industry and house production/consumption
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* - Industry production changes, closure, and spawning
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* - Town growth
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* - Company age and periodical finance stats
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* - Vehicle age and profit statistics, both individual and group
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* - Vehicle aging, depreciation, reliability, and renewal
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* - Payment intervals for running and maintenance costs, loan interest, etc.
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* - Cargo payment "time" calculation
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* - Local authority and station ratings change intervals
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*/
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class TimerGameEconomy : public TimerGame<struct Economy> {
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public:
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static Year year; ///< Current year, starting at 0.
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static Month month; ///< Current month (0..11).
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static Date date; ///< Current date in days (day counter).
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static DateFract date_fract; ///< Fractional part of the day.
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static YearMonthDay ConvertDateToYMD(Date date);
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static Date ConvertYMDToDate(Year year, Month month, Day day);
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static void SetDate(Date date, DateFract fract);
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static bool UsingWallclockUnits(bool newgame = false);
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};
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/**
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* Storage class for Economy time constants.
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*/
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class EconomyTime : public TimerGameConst<struct Economy> {
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public:
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static constexpr int DAYS_IN_ECONOMY_YEAR = 360; ///< Days in an economy year, when in wallclock timekeeping mode.
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static constexpr int DAYS_IN_ECONOMY_MONTH = 30; ///< Days in an economy month, when in wallclock timekeeping mode.
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};
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#endif /* TIMER_GAME_ECONOMY_H */
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