mirror of
https://github.com/OpenRCT2/OpenRCT2
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132 lines
3.2 KiB
C++
132 lines
3.2 KiB
C++
#pragma region Copyright (c) 2014-2017 OpenRCT2 Developers
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/*****************************************************************************
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* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
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*
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* OpenRCT2 is the work of many authors, a full list can be found in contributors.md
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* For more information, visit https://github.com/OpenRCT2/OpenRCT2
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*
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* OpenRCT2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* A full copy of the GNU General Public License can be found in licence.txt
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*****************************************************************************/
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#pragma endregion
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#include <time.h>
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#include "../Game.h"
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#include "../core/Math.hpp"
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#include "Date.h"
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#include "StringIds.h"
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uint16 gDateMonthTicks;
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uint16 gDateMonthsElapsed;
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// rct2: 0x00993988
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const sint16 days_in_month[MONTH_COUNT] = { 31, 30, 31, 30, 31, 31, 30, 31 };
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// clang-format off
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const rct_string_id DateFormatStringIds[] = {
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STR_DATE_FORMAT_DAY_MONTH_YEAR,
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STR_DATE_FORMAT_MONTH_DAY_YEAR,
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STR_DATE_FORMAT_YEAR_MONTH_DAY,
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STR_DATE_FORMAT_YEAR_DAY_MONTH
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};
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const rct_string_id DateFormatStringFormatIds[] = {
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STR_DATE_FORMAT_DMY,
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STR_DATE_FORMAT_MDY,
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STR_DATE_FORMAT_YMD,
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STR_DATE_FORMAT_YDM
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};
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// clang-format on
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openrct_timeofday gRealTimeOfDay;
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sint32 date_get_month(sint32 months)
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{
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return months % MONTH_COUNT;
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}
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sint32 date_get_year(sint32 months)
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{
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return months / MONTH_COUNT;
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}
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sint32 date_get_total_months(sint32 month, sint32 year)
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{
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return (year - 1) * MONTH_COUNT + month;
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}
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/**
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*
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* rct2: 0x006C4494
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*/
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void date_reset()
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{
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gDateMonthsElapsed = 0;
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gDateMonthTicks = 0;
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gCurrentTicks = 0;
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}
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void date_set(sint32 year, sint32 month, sint32 day)
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{
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year = Math::Clamp(1, year, 8192);
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month = Math::Clamp(1, month, (int)MONTH_COUNT);
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day = Math::Clamp(1, day, (int)days_in_month[month - 1]);
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gDateMonthsElapsed = (year - 1) * MONTH_COUNT + month - 1;
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gDateMonthTicks = 0x10000 / days_in_month[month - 1] * (day - 1) + 4;
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}
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void date_update()
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{
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sint32 monthTicks = gDateMonthTicks + 4;
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if (monthTicks >= 0x10000)
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{
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gDateMonthTicks = 0;
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gDateMonthsElapsed++;
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}
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else
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{
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gDateMonthTicks = floor2((uint16)monthTicks, 4);
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}
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}
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void date_update_real_time_of_day()
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{
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time_t timestamp = time(nullptr);
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struct tm *now = localtime(×tamp);
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gRealTimeOfDay.second = now->tm_sec;
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gRealTimeOfDay.minute = now->tm_min;
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gRealTimeOfDay.hour = now->tm_hour;
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}
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bool date_is_day_start(sint32 monthTicks)
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{
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if (monthTicks < 4)
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{
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return false;
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}
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sint32 prevMonthTick = monthTicks - 4;
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sint32 currentMonth = date_get_month(gDateMonthsElapsed);
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sint32 currentDaysInMonth = days_in_month[currentMonth];
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return ((currentDaysInMonth * monthTicks) >> 16 != (currentDaysInMonth * prevMonthTick) >> 16);
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}
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bool date_is_week_start(sint32 monthTicks)
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{
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return (monthTicks & 0x3FFF) == 0;
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}
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bool date_is_fortnight_start(sint32 monthTicks)
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{
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return (monthTicks & 0x7FFF) == 0;
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}
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bool date_is_month_start(sint32 monthTicks)
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{
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return (monthTicks == 0);
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}
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