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-rw-r--r--src/date.cpp304
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diff --git a/src/date.cpp b/src/date.cpp
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+++ b/src/date.cpp
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+/* $Id$ */
+
+#include "stdafx.h"
+#include "openttd.h"
+#include "date.h"
+#include "variables.h"
+#include "macros.h"
+#include "vehicle.h"
+#include "network/network.h"
+#include "network/network_data.h"
+#include "network/network_server.h"
+#include "functions.h"
+#include "currency.h"
+
+Year _cur_year;
+Month _cur_month;
+Date _date;
+DateFract _date_fract;
+
+
+void SetDate(Date date)
+{
+ YearMonthDay ymd;
+
+ _date = date;
+ ConvertDateToYMD(date, &ymd);
+ _cur_year = ymd.year;
+ _cur_month = ymd.month;
+#ifdef ENABLE_NETWORK
+ _network_last_advertise_frame = 0;
+ _network_need_advertise = true;
+#endif /* ENABLE_NETWORK */
+}
+
+#define M(a, b) ((a << 5) | b)
+static const uint16 _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 {
+ 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,
+};
+
+static const uint16 _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,
+};
+
+static inline bool IsLeapYear(Year yr)
+{
+ return yr % 4 == 0 && (yr % 100 != 0 || yr % 400 == 0);
+}
+
+/**
+ * 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
+ */
+void ConvertDateToYMD(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 */
+ Year yr = 400 * (date / (365 * 400 + 97));
+ int rem = date % (365 * 400 + 97);
+ uint16 x;
+
+ if (rem >= 365 * 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 -= 365 * 100 + 25;
+
+ /* There are 24 leap years in the next couple of 100 years */
+ yr += 100 * (rem / (365 * 100 + 24));
+ rem = (rem % (365 * 100 + 24));
+ }
+
+ if (!IsLeapYear(yr) && rem >= 365 * 4) {
+ /* The first 4 year of the century are not always a leap year */
+ yr += 4;
+ rem -= 365 * 4;
+ }
+
+ /* There is 1 leap year every 4 years */
+ yr += 4 * (rem / (365 * 4 + 1));
+ rem = rem % (365 * 4 + 1);
+
+ /* The last (max 3) years to account for; the first one
+ * can be, but is not necessarily a leap year */
+ while (rem >= (IsLeapYear(yr) ? 366 : 365)) {
+ rem -= IsLeapYear(yr) ? 366 : 365;
+ yr++;
+ }
+
+ /* Skip the 29th of February in non-leap years */
+ if (!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 tupe 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
+ */
+Date ConvertYMDToDate(Year year, Month month, Day day)
+{
+ /*
+ * Each passed leap year adds one day to the 'day count'.
+ *
+ * A special case for the year 0 as no year has been passed,
+ * but '(year - 1) / 4' does not yield '-1' to counteract the
+ * '+1' at the end of the formula as divisions round to zero.
+ */
+ int nr_of_leap_years = (year == 0) ? 0 : ((year - 1) / 4 - (year - 1) / 100 + (year - 1) / 400 + 1);
+
+ /* 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 (!IsLeapYear(year) && days >= ACCUM_MAR) days--;
+
+ return year * 365 + nr_of_leap_years + days;
+}
+
+/** Functions used by the IncreaseDate function */
+
+extern void OnNewDay_Train(Vehicle *v);
+extern void OnNewDay_RoadVeh(Vehicle *v);
+extern void OnNewDay_Aircraft(Vehicle *v);
+extern void OnNewDay_Ship(Vehicle *v);
+static void OnNewDay_EffectVehicle(Vehicle *v) { /* empty */ }
+extern void OnNewDay_DisasterVehicle(Vehicle *v);
+
+typedef void OnNewVehicleDayProc(Vehicle *v);
+
+static OnNewVehicleDayProc * _on_new_vehicle_day_proc[] = {
+ OnNewDay_Train,
+ OnNewDay_RoadVeh,
+ OnNewDay_Ship,
+ OnNewDay_Aircraft,
+ OnNewDay_EffectVehicle,
+ OnNewDay_DisasterVehicle,
+};
+
+extern void WaypointsDailyLoop(void);
+extern void TextMessageDailyLoop(void);
+extern void EnginesDailyLoop(void);
+extern void DisasterDailyLoop(void);
+
+extern void PlayersMonthlyLoop(void);
+extern void EnginesMonthlyLoop(void);
+extern void TownsMonthlyLoop(void);
+extern void IndustryMonthlyLoop(void);
+extern void StationMonthlyLoop(void);
+
+extern void PlayersYearlyLoop(void);
+extern void TrainsYearlyLoop(void);
+extern void RoadVehiclesYearlyLoop(void);
+extern void AircraftYearlyLoop(void);
+extern void ShipsYearlyLoop(void);
+
+extern void ShowEndGameChart(void);
+
+
+static const Month _autosave_months[] = {
+ 0, // never
+ 1, // every month
+ 3, // every 3 months
+ 6, // every 6 months
+ 12, // every 12 months
+};
+
+/**
+ * Runs the day_proc for every DAY_TICKS vehicle starting at daytick.
+ */
+static void RunVehicleDayProc(uint daytick)
+{
+ uint total = GetMaxVehicleIndex() + 1;
+ uint i;
+
+ for (i = daytick; i < total; i += DAY_TICKS) {
+ Vehicle *v = GetVehicle(i);
+
+ if (IsValidVehicle(v)) _on_new_vehicle_day_proc[v->type - 0x10](v);
+ }
+}
+
+void IncreaseDate(void)
+{
+ YearMonthDay ymd;
+
+ if (_game_mode == GM_MENU) {
+ _tick_counter++;
+ return;
+ }
+
+ RunVehicleDayProc(_date_fract);
+
+ /* increase day, and check if a new day is there? */
+ _tick_counter++;
+
+ _date_fract++;
+ if (_date_fract < DAY_TICKS) return;
+ _date_fract = 0;
+
+ /* yeah, increase day counter and call various daily loops */
+ _date++;
+
+ TextMessageDailyLoop();
+
+ DisasterDailyLoop();
+ WaypointsDailyLoop();
+
+ if (_game_mode != GM_MENU) {
+ InvalidateWindowWidget(WC_STATUS_BAR, 0, 0);
+ EnginesDailyLoop();
+ }
+
+ /* check if we entered a new month? */
+ ConvertDateToYMD(_date, &ymd);
+ if (ymd.month == _cur_month) return;
+ _cur_month = ymd.month;
+
+ /* yes, call various monthly loops */
+ if (_game_mode != GM_MENU) {
+ if (_opt.autosave != 0 && (_cur_month % _autosave_months[_opt.autosave]) == 0) {
+ _do_autosave = true;
+ RedrawAutosave();
+ }
+
+ PlayersMonthlyLoop();
+ EnginesMonthlyLoop();
+ TownsMonthlyLoop();
+ IndustryMonthlyLoop();
+ StationMonthlyLoop();
+ if (_network_server) NetworkServerMonthlyLoop();
+ }
+
+ /* check if we entered a new year? */
+ if (ymd.year == _cur_year) return;
+ _cur_year = ymd.year;
+
+ /* yes, call various yearly loops */
+ PlayersYearlyLoop();
+ TrainsYearlyLoop();
+ RoadVehiclesYearlyLoop();
+ AircraftYearlyLoop();
+ ShipsYearlyLoop();
+ if (_network_server) NetworkServerYearlyLoop();
+
+ /* check if we reached end of the game */
+ if (_cur_year == _patches.ending_year) {
+ ShowEndGameChart();
+ /* check if we reached the maximum year, decrement dates by a year */
+ } else if (_cur_year == MAX_YEAR + 1) {
+ Vehicle *v;
+ uint days_this_year;
+
+ _cur_year--;
+ days_this_year = IsLeapYear(_cur_year) ? 366 : 365;
+ _date -= days_this_year;
+ FOR_ALL_VEHICLES(v) v->date_of_last_service -= days_this_year;
+
+ /* Because the _date wraps here, and text-messages expire by game-days, we have to clean out
+ * all of them if the date is set back, else those messages will hang for ever */
+ InitTextMessage();
+ }
+
+ if (_patches.auto_euro) CheckSwitchToEuro();
+}
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