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https://github.com/MaSzyna-EU07/maszyna.git
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refactoring: basic application code wrapper
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tmj-fstate
192
simulationtime.cpp
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192
simulationtime.cpp
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/*
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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() {
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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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::GetLocalTime( &m_time );
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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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} registrytimezoneinfo = { -60, 0, -60, { 0, 10, 0, 5, 3, 0, 0, 0 }, { 0, 3, 0, 5, 2, 0, 0, 0 } };
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#ifdef _WIN32
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TCHAR timezonekeyname[] { TEXT( "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones\\Central European Standard Time" ) };
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HKEY timezonekey { NULL };
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DWORD size { sizeof( registrytimezoneinfo ) };
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if( ::RegOpenKeyEx( HKEY_LOCAL_MACHINE, timezonekeyname, 0, KEY_QUERY_VALUE, &timezonekey ) == ERROR_SUCCESS ) {
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::RegQueryValueEx( timezonekey, "TZI", NULL, NULL, (BYTE *)®istrytimezoneinfo, &size );
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}
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#endif
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TIME_ZONE_INFORMATION timezoneinfo { 0 };
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timezoneinfo.Bias = registrytimezoneinfo.Bias;
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timezoneinfo.DaylightBias = registrytimezoneinfo.DaylightBias;
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timezoneinfo.DaylightDate = registrytimezoneinfo.DaylightDate;
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timezoneinfo.StandardBias = registrytimezoneinfo.StandardBias;
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timezoneinfo.StandardDate = registrytimezoneinfo.StandardDate;
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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 = ( m_time.wYear % 4 == 0 ) && ( m_time.wYear % 100 != 0 ) || ( m_time.wYear % 400 == 0 );
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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 = ( m_time.wYear % 4 == 0 ) && ( m_time.wYear % 100 != 0 ) || ( m_time.wYear % 400 == 0 );
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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 leap { ( Year % 4 == 0 ) && ( Year % 100 != 0 ) || ( Year % 400 == 0 ) };
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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 leap = ( Year % 4 == 0 ) && ( Year % 100 != 0 ) || ( Year % 400 == 0 );
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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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//---------------------------------------------------------------------------
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