cpp/openttd-patchpack/source Files · src/ai/api/ai_date.cpp

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peter1138

(svn r15389) -Feature: Add ability to select which base graphics set is used from the Game Options window. The change takes effect when the window is closed. This option can only be used from the intro menu, as reloading graphics during a game may cause issues.

/* $Id$ */

/** @file ai_date.cpp Implementation of AIDate. */

#include "ai_date.hpp"
#include "../../date_func.h"

/* static */ int32 AIDate::GetCurrentDate()
{
	return ::_date;
}

/* static */ int32 AIDate::GetYear(int32 date)
{
	if (date < 0) return -1;

	::YearMonthDay ymd;
	::ConvertDateToYMD(date, &ymd);
	return ymd.year;
}

/* static */ int32 AIDate::GetMonth(int32 date)
{
	if (date < 0) return -1;

	::YearMonthDay ymd;
	::ConvertDateToYMD(date, &ymd);
	return ymd.month + 1;
}

/* static */ int32 AIDate::GetDayOfMonth(int32 date)
{
	if (date < 0) return -1;

	::YearMonthDay ymd;
	::ConvertDateToYMD(date, &ymd);
	return ymd.day;
}

/* static */ int32 AIDate::GetDate(int32 year, int32 month, int32 day_of_month)
{
	if (month < 1 || month > 12) return -1;
	if (day_of_month < 1 || day_of_month > 31) return -1;
	if (year < 0 || year > MAX_YEAR) return -1;

	return ::ConvertYMDToDate(year, month - 1, day_of_month);
}