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Location: cpp/openttd-patchpack/source/src/timer/timer_game_calendar.cpp - annotation
r27778:6b29a42dcb99
11.0 KiB
text/x-c
Codechange: Add a DateToYear function instead of dividing each time (#11173)
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r27091:9e41ca246188 r27091:9e41ca246188 r27091:9e41ca246188 r27091:9e41ca246188 | /*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file timer_game_calendar.cpp
* This file implements the timer logic for the game-calendar-timer.
*/
#include "stdafx.h"
#include "openttd.h"
#include "timer.h"
#include "timer_game_calendar.h"
#include "vehicle_base.h"
#include "linkgraph/linkgraph.h"
#include "safeguards.h"
TimerGameCalendar::Year TimerGameCalendar::year = {};
TimerGameCalendar::Month TimerGameCalendar::month = {};
TimerGameCalendar::Date TimerGameCalendar::date = {};
TimerGameCalendar::DateFract TimerGameCalendar::date_fract = {};
#define M(a, b) ((a << 5) | b)
static const uint16_t _month_date_from_year_day[] = {
M(0, 1), M(0, 2), M(0, 3), M(0, 4), M(0, 5), M(0, 6), M(0, 7), M(0, 8), M(0, 9), M(0, 10), M(0, 11), M(0, 12), M(0, 13), M(0, 14), M(0, 15), M(0, 16), M(0, 17), M(0, 18), M(0, 19), M(0, 20), M(0, 21), M(0, 22), M(0, 23), M(0, 24), M(0, 25), M(0, 26), M(0, 27), M(0, 28), M(0, 29), M(0, 30), M(0, 31),
M(1, 1), M(1, 2), M(1, 3), M(1, 4), M(1, 5), M(1, 6), M(1, 7), M(1, 8), M(1, 9), M(1, 10), M(1, 11), M(1, 12), M(1, 13), M(1, 14), M(1, 15), M(1, 16), M(1, 17), M(1, 18), M(1, 19), M(1, 20), M(1, 21), M(1, 22), M(1, 23), M(1, 24), M(1, 25), M(1, 26), M(1, 27), M(1, 28), M(1, 29),
M(2, 1), M(2, 2), M(2, 3), M(2, 4), M(2, 5), M(2, 6), M(2, 7), M(2, 8), M(2, 9), M(2, 10), M(2, 11), M(2, 12), M(2, 13), M(2, 14), M(2, 15), M(2, 16), M(2, 17), M(2, 18), M(2, 19), M(2, 20), M(2, 21), M(2, 22), M(2, 23), M(2, 24), M(2, 25), M(2, 26), M(2, 27), M(2, 28), M(2, 29), M(2, 30), M(2, 31),
M(3, 1), M(3, 2), M(3, 3), M(3, 4), M(3, 5), M(3, 6), M(3, 7), M(3, 8), M(3, 9), M(3, 10), M(3, 11), M(3, 12), M(3, 13), M(3, 14), M(3, 15), M(3, 16), M(3, 17), M(3, 18), M(3, 19), M(3, 20), M(3, 21), M(3, 22), M(3, 23), M(3, 24), M(3, 25), M(3, 26), M(3, 27), M(3, 28), M(3, 29), M(3, 30),
M(4, 1), M(4, 2), M(4, 3), M(4, 4), M(4, 5), M(4, 6), M(4, 7), M(4, 8), M(4, 9), M(4, 10), M(4, 11), M(4, 12), M(4, 13), M(4, 14), M(4, 15), M(4, 16), M(4, 17), M(4, 18), M(4, 19), M(4, 20), M(4, 21), M(4, 22), M(4, 23), M(4, 24), M(4, 25), M(4, 26), M(4, 27), M(4, 28), M(4, 29), M(4, 30), M(4, 31),
M(5, 1), M(5, 2), M(5, 3), M(5, 4), M(5, 5), M(5, 6), M(5, 7), M(5, 8), M(5, 9), M(5, 10), M(5, 11), M(5, 12), M(5, 13), M(5, 14), M(5, 15), M(5, 16), M(5, 17), M(5, 18), M(5, 19), M(5, 20), M(5, 21), M(5, 22), M(5, 23), M(5, 24), M(5, 25), M(5, 26), M(5, 27), M(5, 28), M(5, 29), M(5, 30),
M(6, 1), M(6, 2), M(6, 3), M(6, 4), M(6, 5), M(6, 6), M(6, 7), M(6, 8), M(6, 9), M(6, 10), M(6, 11), M(6, 12), M(6, 13), M(6, 14), M(6, 15), M(6, 16), M(6, 17), M(6, 18), M(6, 19), M(6, 20), M(6, 21), M(6, 22), M(6, 23), M(6, 24), M(6, 25), M(6, 26), M(6, 27), M(6, 28), M(6, 29), M(6, 30), M(6, 31),
M(7, 1), M(7, 2), M(7, 3), M(7, 4), M(7, 5), M(7, 6), M(7, 7), M(7, 8), M(7, 9), M(7, 10), M(7, 11), M(7, 12), M(7, 13), M(7, 14), M(7, 15), M(7, 16), M(7, 17), M(7, 18), M(7, 19), M(7, 20), M(7, 21), M(7, 22), M(7, 23), M(7, 24), M(7, 25), M(7, 26), M(7, 27), M(7, 28), M(7, 29), M(7, 30), M(7, 31),
M(8, 1), M(8, 2), M(8, 3), M(8, 4), M(8, 5), M(8, 6), M(8, 7), M(8, 8), M(8, 9), M(8, 10), M(8, 11), M(8, 12), M(8, 13), M(8, 14), M(8, 15), M(8, 16), M(8, 17), M(8, 18), M(8, 19), M(8, 20), M(8, 21), M(8, 22), M(8, 23), M(8, 24), M(8, 25), M(8, 26), M(8, 27), M(8, 28), M(8, 29), M(8, 30),
M(9, 1), M(9, 2), M(9, 3), M(9, 4), M(9, 5), M(9, 6), M(9, 7), M(9, 8), M(9, 9), M(9, 10), M(9, 11), M(9, 12), M(9, 13), M(9, 14), M(9, 15), M(9, 16), M(9, 17), M(9, 18), M(9, 19), M(9, 20), M(9, 21), M(9, 22), M(9, 23), M(9, 24), M(9, 25), M(9, 26), M(9, 27), M(9, 28), M(9, 29), M(9, 30), M(9, 31),
M(10, 1), M(10, 2), M(10, 3), M(10, 4), M(10, 5), M(10, 6), M(10, 7), M(10, 8), M(10, 9), M(10, 10), M(10, 11), M(10, 12), M(10, 13), M(10, 14), M(10, 15), M(10, 16), M(10, 17), M(10, 18), M(10, 19), M(10, 20), M(10, 21), M(10, 22), M(10, 23), M(10, 24), M(10, 25), M(10, 26), M(10, 27), M(10, 28), M(10, 29), M(10, 30),
M(11, 1), M(11, 2), M(11, 3), M(11, 4), M(11, 5), M(11, 6), M(11, 7), M(11, 8), M(11, 9), M(11, 10), M(11, 11), M(11, 12), M(11, 13), M(11, 14), M(11, 15), M(11, 16), M(11, 17), M(11, 18), M(11, 19), M(11, 20), M(11, 21), M(11, 22), M(11, 23), M(11, 24), M(11, 25), M(11, 26), M(11, 27), M(11, 28), M(11, 29), M(11, 30), M(11, 31),
};
#undef M
enum DaysTillMonth {
ACCUM_JAN = 0,
ACCUM_FEB = ACCUM_JAN + 31,
ACCUM_MAR = ACCUM_FEB + 29,
ACCUM_APR = ACCUM_MAR + 31,
ACCUM_MAY = ACCUM_APR + 30,
ACCUM_JUN = ACCUM_MAY + 31,
ACCUM_JUL = ACCUM_JUN + 30,
ACCUM_AUG = ACCUM_JUL + 31,
ACCUM_SEP = ACCUM_AUG + 31,
ACCUM_OCT = ACCUM_SEP + 30,
ACCUM_NOV = ACCUM_OCT + 31,
ACCUM_DEC = ACCUM_NOV + 30,
};
/** Number of days to pass from the first day in the year before reaching the first of a month. */
static const uint16_t _accum_days_for_month[] = {
ACCUM_JAN, ACCUM_FEB, ACCUM_MAR, ACCUM_APR,
ACCUM_MAY, ACCUM_JUN, ACCUM_JUL, ACCUM_AUG,
ACCUM_SEP, ACCUM_OCT, ACCUM_NOV, ACCUM_DEC,
};
/**
* Converts a Date to a Year, Month & Day.
* @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)
{
/* 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 * (date / (DAYS_IN_YEAR * 400 + 97));
int rem = date % (DAYS_IN_YEAR * 400 + 97);
uint16_t x;
if (rem >= 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;
/* 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));
}
if (!TimerGameCalendar::IsLeapYear(yr) && rem >= DAYS_IN_YEAR * 4) {
/* The first 4 year of the century are not always a leap year */
yr += 4;
rem -= 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);
/* 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;
yr++;
}
/* Skip the 29th of February in non-leap years */
if (!TimerGameCalendar::IsLeapYear(yr) && rem >= ACCUM_MAR - 1) rem++;
ymd->year = yr;
x = _month_date_from_year_day[rem];
ymd->month = x >> 5;
ymd->day = x & 0x1F;
}
/**
* Converts a tuple of Year, Month and Day to a Date.
* @param year is a number between 0..MAX_YEAR
* @param month is a number between 0..11
* @param day is a number between 1..31
*/
/* static */ TimerGameCalendar::Date TimerGameCalendar::ConvertYMDToDate(TimerGameCalendar::Year year, TimerGameCalendar::Month month, TimerGameCalendar::Day day)
{
/* Day-offset in a leap year */
int days = _accum_days_for_month[month] + day - 1;
/* 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;
}
/**
* Checks whether the given year is a leap year or not.
* @param yr The year to check.
* @return True if \c yr is a leap year, otherwise false.
*/
/* static */ bool TimerGameCalendar::IsLeapYear(TimerGameCalendar::Year yr)
{
return yr % 4 == 0 && (yr % 100 != 0 || yr % 400 == 0);
}
/**
* Set the date.
* @param date New date
* @param fract The number of ticks that have passed on this date.
*/
/* static */ void TimerGameCalendar::SetDate(TimerGameCalendar::Date date, TimerGameCalendar::DateFract fract)
{
assert(fract < DAY_TICKS);
YearMonthDay ymd;
TimerGameCalendar::date = date;
TimerGameCalendar::date_fract = fract;
TimerGameCalendar::ConvertDateToYMD(date, &ymd);
TimerGameCalendar::year = ymd.year;
TimerGameCalendar::month = ymd.month;
}
template<>
void IntervalTimer<TimerGameCalendar>::Elapsed(TimerGameCalendar::TElapsed trigger)
{
if (trigger == this->period.trigger) {
this->callback(1);
}
}
template<>
void TimeoutTimer<TimerGameCalendar>::Elapsed(TimerGameCalendar::TElapsed trigger)
{
if (this->fired) return;
if (trigger == this->period.trigger) {
this->callback();
this->fired = true;
}
}
template<>
void TimerManager<TimerGameCalendar>::Elapsed(TimerGameCalendar::TElapsed delta)
{
assert(delta == 1);
if (_game_mode == GM_MENU) return;
TimerGameCalendar::date_fract++;
if (TimerGameCalendar::date_fract < DAY_TICKS) return;
TimerGameCalendar::date_fract = 0;
/* increase day counter */
TimerGameCalendar::date++;
TimerGameCalendar::YearMonthDay ymd;
TimerGameCalendar::ConvertDateToYMD(TimerGameCalendar::date, &ymd);
/* check if we entered a new month? */
bool new_month = ymd.month != TimerGameCalendar::month;
/* check if we entered a new year? */
bool new_year = ymd.year != TimerGameCalendar::year;
/* update internal variables before calling the daily/monthly/yearly loops */
TimerGameCalendar::month = ymd.month;
TimerGameCalendar::year = ymd.year;
/* Make a temporary copy of the timers, as a timer's callback might add/remove other timers. */
auto timers = TimerManager<TimerGameCalendar>::GetTimers();
for (auto timer : timers) {
timer->Elapsed(TimerGameCalendar::DAY);
}
if (new_month) {
for (auto timer : timers) {
timer->Elapsed(TimerGameCalendar::MONTH);
}
}
if (new_year) {
for (auto timer : timers) {
timer->Elapsed(TimerGameCalendar::YEAR);
}
}
/* check if we reached the maximum year, decrement dates by a year */
if (TimerGameCalendar::year == MAX_YEAR + 1) {
int days_this_year;
TimerGameCalendar::year--;
days_this_year = TimerGameCalendar::IsLeapYear(TimerGameCalendar::year) ? DAYS_IN_LEAP_YEAR : 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);
}
}
#ifdef WITH_ASSERT
template<>
void TimerManager<TimerGameCalendar>::Validate(TimerGameCalendar::TPeriod period)
{
if (period.priority == TimerGameCalendar::Priority::NONE) return;
/* Validate we didn't make a developer error and scheduled more than one
* entry on the same priority/trigger. There can only be one timer on
* a specific trigger/priority, to ensure we are deterministic. */
for (const auto &timer : TimerManager<TimerGameCalendar>::GetTimers()) {
if (timer->period.trigger != period.trigger) continue;
assert(timer->period.priority != period.priority);
}
}
#endif /* WITH_ASSERT */
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