File diff r27883:ddbd33508a8a → r27884:803962be0328
src/timer/timer_game_calendar.cpp
Show inline comments
 
@@ -68,42 +68,42 @@ static const uint16_t _accum_days_for_mo
 
 * @param date the date to convert from
 
 * @param ymd  the year, month and day to write to
 
 */
 
/* static */ void TimerGameCalendar::ConvertDateToYMD(TimerGameCalendar::Date date, YearMonthDay *ymd)
 
/* static */ void TimerGameCalendar::ConvertDateToYMD(TimerGameCalendar::Date date, TimerGameCalendar::YearMonthDay *ymd)
 
{
 
	/* Year determination in multiple steps to account for leap
 
	 * years. First do the large steps, then the smaller ones.
 
	 */
 

	
 
	/* There are 97 leap years in 400 years */
 
	TimerGameCalendar::Year yr = 400 * (static_cast<int32_t>(date) / (DAYS_IN_YEAR * 400 + 97));
 
	int rem = static_cast<int32_t>(date) % (DAYS_IN_YEAR * 400 + 97);
 
	TimerGameCalendar::Year yr = 400 * (static_cast<int32_t>(date) / (CalendarTime::DAYS_IN_YEAR * 400 + 97));
 
	int rem = static_cast<int32_t>(date) % (CalendarTime::DAYS_IN_YEAR * 400 + 97);
 
	uint16_t x;
 

	
 
	if (rem >= DAYS_IN_YEAR * 100 + 25) {
 
	if (rem >= CalendarTime::DAYS_IN_YEAR * 100 + 25) {
 
		/* There are 25 leap years in the first 100 years after
 
		 * every 400th year, as every 400th year is a leap year */
 
		yr += 100;
 
		rem -= DAYS_IN_YEAR * 100 + 25;
 
		rem -= CalendarTime::DAYS_IN_YEAR * 100 + 25;
 

	
 
		/* There are 24 leap years in the next couple of 100 years */
 
		yr += 100 * (rem / (DAYS_IN_YEAR * 100 + 24));
 
		rem = (rem % (DAYS_IN_YEAR * 100 + 24));
 
		yr += 100 * (rem / (CalendarTime::DAYS_IN_YEAR * 100 + 24));
 
		rem = (rem % (CalendarTime::DAYS_IN_YEAR * 100 + 24));
 
	}
 

	
 
	if (!TimerGameCalendar::IsLeapYear(yr) && rem >= DAYS_IN_YEAR * 4) {
 
	if (!TimerGameCalendar::IsLeapYear(yr) && rem >= CalendarTime::DAYS_IN_YEAR * 4) {
 
		/* The first 4 year of the century are not always a leap year */
 
		yr += 4;
 
		rem -= DAYS_IN_YEAR * 4;
 
		rem -= CalendarTime::DAYS_IN_YEAR * 4;
 
	}
 

	
 
	/* There is 1 leap year every 4 years */
 
	yr += 4 * (rem / (DAYS_IN_YEAR * 4 + 1));
 
	rem = rem % (DAYS_IN_YEAR * 4 + 1);
 
	yr += 4 * (rem / (CalendarTime::DAYS_IN_YEAR * 4 + 1));
 
	rem = rem % (CalendarTime::DAYS_IN_YEAR * 4 + 1);
 

	
 
	/* The last (max 3) years to account for; the first one
 
	 * can be, but is not necessarily a leap year */
 
	while (rem >= (TimerGameCalendar::IsLeapYear(yr) ? DAYS_IN_LEAP_YEAR : DAYS_IN_YEAR)) {
 
		rem -= TimerGameCalendar::IsLeapYear(yr) ? DAYS_IN_LEAP_YEAR : DAYS_IN_YEAR;
 
	while (rem >= (TimerGameCalendar::IsLeapYear(yr) ? CalendarTime::DAYS_IN_LEAP_YEAR : CalendarTime::DAYS_IN_YEAR)) {
 
		rem -= TimerGameCalendar::IsLeapYear(yr) ? CalendarTime::DAYS_IN_LEAP_YEAR : CalendarTime::DAYS_IN_YEAR;
 
		yr++;
 
	}
 

	
 
@@ -131,7 +131,7 @@ static const uint16_t _accum_days_for_mo
 
	/* Account for the missing of the 29th of February in non-leap years */
 
	if (!TimerGameCalendar::IsLeapYear(year) && days >= ACCUM_MAR) days--;
 

	
 
	return DateAtStartOfYear(year) + days;
 
	return TimerGameCalendar::DateAtStartOfYear(year) + days;
 
}
 

	
 
/**
 
@@ -153,7 +153,7 @@ static const uint16_t _accum_days_for_mo
 
{
 
	assert(fract < Ticks::DAY_TICKS);
 

	
 
	YearMonthDay ymd;
 
	TimerGameCalendar::YearMonthDay ymd;
 

	
 
	TimerGameCalendar::date = date;
 
	TimerGameCalendar::date_fract = fract;
 
@@ -240,11 +240,11 @@ void TimerManager<TimerGameCalendar>::El
 
	}
 

	
 
	/* check if we reached the maximum year, decrement dates by a year */
 
	if (TimerGameCalendar::year == MAX_YEAR + 1) {
 
	if (TimerGameCalendar::year == CalendarTime::MAX_YEAR + 1) {
 
		int days_this_year;
 

	
 
		TimerGameCalendar::year--;
 
		days_this_year = TimerGameCalendar::IsLeapYear(TimerGameCalendar::year) ? DAYS_IN_LEAP_YEAR : DAYS_IN_YEAR;
 
		days_this_year = TimerGameCalendar::IsLeapYear(TimerGameCalendar::year) ? CalendarTime::DAYS_IN_LEAP_YEAR : CalendarTime::DAYS_IN_YEAR;
 
		TimerGameCalendar::date -= days_this_year;
 
		for (Vehicle *v : Vehicle::Iterate()) v->ShiftDates(-days_this_year);
 
		for (LinkGraph *lg : LinkGraph::Iterate()) lg->ShiftDates(-days_this_year);