mirror of
https://github.com/OpenRCT2/OpenRCT2
synced 2026-01-19 13:03:11 +01:00
127 lines
3.0 KiB
C++
127 lines
3.0 KiB
C++
/*****************************************************************************
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* Copyright (c) 2014-2019 OpenRCT2 developers
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*
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* For a complete list of all authors, please refer to contributors.md
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* Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
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*
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* OpenRCT2 is licensed under the GNU General Public License version 3.
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*****************************************************************************/
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#include "../Game.h"
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#include "Date.h"
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#include "StringIds.h"
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#include <algorithm>
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#include <time.h>
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uint16_t gDateMonthTicks;
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uint16_t gDateMonthsElapsed;
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// rct2: 0x00993988
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const int16_t 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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openrct2_timeofday gRealTimeOfDay;
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int32_t date_get_month(int32_t months)
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{
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return months % MONTH_COUNT;
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}
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int32_t date_get_year(int32_t months)
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{
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return months / MONTH_COUNT;
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}
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int32_t date_get_total_months(int32_t month, int32_t 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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gCurrentRealTimeTicks = 0;
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}
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void date_set(int32_t year, int32_t month, int32_t day)
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{
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year = std::clamp(year, 1, MAX_YEAR);
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month = std::clamp(month, 1, static_cast<int>(MONTH_COUNT));
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day = std::clamp(day, 1, static_cast<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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int32_t 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(static_cast<uint16_t>(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(int32_t 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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int32_t prevMonthTick = monthTicks - 4;
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int32_t currentMonth = date_get_month(gDateMonthsElapsed);
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int32_t 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(int32_t 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(int32_t 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(int32_t monthTicks)
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{
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return (monthTicks == 0);
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}
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