mirror of
https://github.com/MaSzyna-EU07/maszyna.git
synced 2026-03-22 15:05:03 +01:00
258 lines
7.8 KiB
C++
258 lines
7.8 KiB
C++
/*
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This Source Code Form is subject to the
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terms of the Mozilla Public License, v.
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2.0. If a copy of the MPL was not
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distributed with this file, You can
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obtain one at
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http://mozilla.org/MPL/2.0/.
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*/
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#include "stdafx.h"
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#include "simulationtime.h"
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#include "Globals.h"
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#include "utilities.h"
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namespace simulation {
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scenario_time Time;
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} // simulation
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void
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scenario_time::init(std::time_t timestamp) {
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char monthdaycounts[ 2 ][ 13 ] = {
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{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
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{ 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } };
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::memcpy( m_monthdaycounts, monthdaycounts, sizeof( monthdaycounts ) );
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// potentially adjust scenario clock
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auto const requestedtime { clamp_circular<int>( m_time.wHour * 60 + m_time.wMinute + Global.ScenarioTimeOffset * 60, 24 * 60 ) };
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auto const requestedhour { ( requestedtime / 60 ) % 24 };
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auto const requestedminute { requestedtime % 60 };
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// cache requested elements, if any
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std::tm *tms = std::gmtime(×tamp);
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m_time.wYear = tms->tm_year + 1900;
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m_time.wMonth = tms->tm_mon + 1;
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m_time.wDayOfWeek = tms->tm_wday;
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m_time.wDay = tms->tm_mday;
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m_time.wHour = tms->tm_hour;
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m_time.wMinute = tms->tm_min;
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m_time.wSecond = tms->tm_sec;
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m_time.wMilliseconds = 0;
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if( Global.fMoveLight > 0.0 ) {
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// day and month of the year can be overriden by scenario setup
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daymonth( m_time.wDay, m_time.wMonth, m_time.wYear, static_cast<WORD>( Global.fMoveLight ) );
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}
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if( requestedhour != -1 ) { m_time.wHour = static_cast<WORD>( clamp( requestedhour, 0, 23 ) ); }
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if( requestedminute != -1 ) { m_time.wMinute = static_cast<WORD>( clamp( requestedminute, 0, 59 ) ); }
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// if the time is taken from the local clock leave the seconds intact, otherwise set them to zero
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if( ( requestedhour != -1 )
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|| ( requestedminute != 1 ) ) {
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m_time.wSecond = 0;
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}
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m_yearday = year_day( m_time.wDay, m_time.wMonth, m_time.wYear );
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// calculate time zone bias
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// retrieve relevant time zone info from system registry (or fall back on supplied default)
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// TODO: select timezone matching defined geographic location and/or country
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struct registry_time_zone_info {
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long Bias;
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long StandardBias;
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long DaylightBias;
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SYSTEMTIME StandardDate;
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SYSTEMTIME DaylightDate;
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} timezoneinfo = { -60, 0, -60, { 0, 10, 0, 5, 3, 0, 0, 0 }, { 0, 3, 0, 5, 2, 0, 0, 0 } };
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convert_transition_time( timezoneinfo.StandardDate );
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convert_transition_time( timezoneinfo.DaylightDate );
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auto zonebias { timezoneinfo.Bias };
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if( m_yearday < year_day( timezoneinfo.DaylightDate.wDay, timezoneinfo.DaylightDate.wMonth, m_time.wYear ) ) {
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zonebias += timezoneinfo.StandardBias;
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}
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else if( m_yearday < year_day( timezoneinfo.StandardDate.wDay, timezoneinfo.StandardDate.wMonth, m_time.wYear ) ) {
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zonebias += timezoneinfo.DaylightBias;
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}
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else {
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zonebias += timezoneinfo.StandardBias;
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}
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m_timezonebias = ( zonebias / 60.0 );
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}
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void
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scenario_time::update( double const Deltatime ) {
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m_milliseconds += ( 1000.0 * Deltatime );
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while( m_milliseconds >= 1000.0 ) {
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++m_time.wSecond;
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m_milliseconds -= 1000.0;
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}
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m_time.wMilliseconds = std::floor( m_milliseconds );
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while( m_time.wSecond >= 60 ) {
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++m_time.wMinute;
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m_time.wSecond -= 60;
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}
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while( m_time.wMinute >= 60 ) {
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++m_time.wHour;
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m_time.wMinute -= 60;
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}
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while( m_time.wHour >= 24 ) {
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++m_time.wDay;
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++m_time.wDayOfWeek;
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if( m_time.wDayOfWeek >= 7 ) {
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m_time.wDayOfWeek -= 7;
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}
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m_time.wHour -= 24;
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}
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int leap { is_leap( m_time.wYear ) };
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while( m_time.wDay > m_monthdaycounts[ leap ][ m_time.wMonth ] ) {
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m_time.wDay -= m_monthdaycounts[ leap ][ m_time.wMonth ];
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++m_time.wMonth;
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// unlikely but we might've entered a new year
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if( m_time.wMonth > 12 ) {
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++m_time.wYear;
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leap = is_leap( m_time.wYear );
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m_time.wMonth -= 12;
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}
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}
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}
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int
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scenario_time::year_day( int Day, const int Month, const int Year ) const {
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char const daytab[ 2 ][ 13 ] = {
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{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
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{ 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
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};
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int const leap { is_leap( Year ) };
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for( int i = 1; i < Month; ++i )
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Day += daytab[ leap ][ i ];
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return Day;
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}
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void
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scenario_time::daymonth( WORD &Day, WORD &Month, WORD const Year, WORD const Yearday ) {
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WORD daytab[ 2 ][ 13 ] = {
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{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
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{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
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};
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int const leap { is_leap( Year ) };
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WORD idx = 1;
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while( ( idx < 13 ) && ( Yearday >= daytab[ leap ][ idx ] ) ) {
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++idx;
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}
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Month = idx;
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Day = Yearday - daytab[ leap ][ idx - 1 ];
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}
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int
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scenario_time::julian_day() const {
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int yy = ( m_time.wYear < 0 ? m_time.wYear + 1 : m_time.wYear ) - std::floor( ( 12 - m_time.wMonth ) / 10.f );
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int mm = m_time.wMonth + 9;
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if( mm >= 12 ) { mm -= 12; }
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int K1 = std::floor( 365.25 * ( yy + 4712 ) );
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int K2 = std::floor( 30.6 * mm + 0.5 );
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// for dates in Julian calendar
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int JD = K1 + K2 + m_time.wDay + 59;
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// for dates in Gregorian calendar; 2299160 is October 15th, 1582
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const int gregorianswitchday = 2299160;
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if( JD > gregorianswitchday ) {
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int K3 = std::floor( std::floor( ( yy * 0.01 ) + 49 ) * 0.75 ) - 38;
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JD -= K3;
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}
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return JD;
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}
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void scenario_time::set_time(int yearday, int minute) {
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m_yearday = yearday;
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daymonth(m_time.wDay, m_time.wMonth, m_time.wYear, m_yearday);
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m_time.wHour = minute / 60;
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m_time.wMinute = minute % 60;
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}
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// calculates day of week for provided date
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int
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scenario_time::day_of_week( int const Day, int const Month, int const Year ) const {
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// using Zeller's congruence, http://en.wikipedia.org/wiki/Zeller%27s_congruence
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int const q = Day;
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int const m = Month > 2 ? Month : Month + 12;
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int const y = Month > 2 ? Year : Year - 1;
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int const h = ( q + ( 26 * ( m + 1 ) / 10 ) + y + ( y / 4 ) + 6 * ( y / 100 ) + ( y / 400 ) ) % 7;
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/* return ( (h + 5) % 7 ) + 1; // iso week standard, with monday = 1
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*/ return ( (h + 6) % 7 ) + 1; // sunday = 1 numbering method, used in north america, japan
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}
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// calculates day of month for specified weekday of specified month of the year
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int
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scenario_time::day_of_month( int const Week, int const Weekday, int const Month, int const Year ) const {
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int day = 0;
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int dayoffset = weekdays( day_of_week( 1, Month, Year ), Weekday );
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day = ( Week - 1 ) * 7 + 1 + dayoffset;
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if( Week == 5 ) {
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// 5th week potentially indicates last week in the month, not necessarily actual 5th
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char const daytab[ 2 ][ 13 ] = {
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{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
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{ 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
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};
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int const leap { is_leap( Year ) };
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while( day > daytab[ leap ][ Month ] ) {
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day -= 7;
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}
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}
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return day;
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}
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// returns number of days between specified days of week
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int
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scenario_time::weekdays( int const First, int const Second ) const {
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if( Second >= First ) { return Second - First; }
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else { return 7 - First + Second; }
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}
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// helper, converts provided time transition date to regular date
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void
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scenario_time::convert_transition_time( SYSTEMTIME &Time ) const {
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// NOTE: windows uses 0-6 range for days of week numbering, our methods use 1-7
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Time.wDay = day_of_month( Time.wDay, Time.wDayOfWeek + 1, Time.wMonth, m_time.wYear );
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}
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bool
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scenario_time::is_leap( int const Year ) const {
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return ( ( Year % 4 == 0 ) && ( ( Year % 100 != 0 ) || ( Year % 400 == 0 ) ) );
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}
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//---------------------------------------------------------------------------
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