Time

Inherits: Object

Time singleton for working with time.

Description

The Time singleton allows converting time between various formats and also getting time information from the system.

This class conforms with as many of the ISO 8601 standards as possible. All dates follow the Proleptic Gregorian calendar. As such, the day before 1582-10-15 is 1582-10-14, not 1582-10-04. The year before 1 AD (aka 1 BC) is number 0, with the year before that (2 BC) being -1, etc.

Conversion methods assume “the same timezone”, and do not handle timezone conversions or DST automatically. Leap seconds are also not handled, they must be done manually if desired. Suffixes such as “Z” are not handled, you need to strip them away manually.

When getting time information from the system, the time can either be in the local timezone or UTC depending on the utc parameter. However, the get_unix_time_from_system method always returns the time in UTC.

Important: The _from_system methods use the system clock that the user can manually set. Never use this method for precise time calculation since its results are subject to automatic adjustments by the user or the operating system. Always use get_ticks_usec or get_ticks_msec for precise time calculation instead, since they are guaranteed to be monotonic (i.e. never decrease).

Methods

Enumerations

enum Month:

• MONTH_JANUARY = 1 —- The month of January, represented numerically as 01.

• MONTH_FEBRUARY = 2 —- The month of February, represented numerically as 02.

• MONTH_MARCH = 3 —- The month of March, represented numerically as 03.

• MONTH_APRIL = 4 —- The month of April, represented numerically as 04.

• MONTH_MAY = 5 —- The month of May, represented numerically as 05.

• MONTH_JUNE = 6 —- The month of June, represented numerically as 06.

• MONTH_JULY = 7 —- The month of July, represented numerically as 07.

• MONTH_AUGUST = 8 —- The month of August, represented numerically as 08.

• MONTH_SEPTEMBER = 9 —- The month of September, represented numerically as 09.

• MONTH_OCTOBER = 10 —- The month of October, represented numerically as 10.

• MONTH_NOVEMBER = 11 —- The month of November, represented numerically as 11.

• MONTH_DECEMBER = 12 —- The month of December, represented numerically as 12.

enum Weekday:

• WEEKDAY_SUNDAY = 0 —- The day of the week Sunday, represented numerically as 0.

• WEEKDAY_MONDAY = 1 —- The day of the week Monday, represented numerically as 1.

• WEEKDAY_TUESDAY = 2 —- The day of the week Tuesday, represented numerically as 2.

• WEEKDAY_WEDNESDAY = 3 —- The day of the week Wednesday, represented numerically as 3.

• WEEKDAY_THURSDAY = 4 —- The day of the week Thursday, represented numerically as 4.

• WEEKDAY_FRIDAY = 5 —- The day of the week Friday, represented numerically as 5.

• WEEKDAY_SATURDAY = 6 —- The day of the week Saturday, represented numerically as 6.

Method Descriptions

• Dictionary get_date_dict_from_system ( bool utc=false ) const

Returns the current date as a dictionary of keys: year, month, day, weekday, and dst (Daylight Savings Time).

The returned values are in the system’s local time when utc is false, otherwise they are in UTC.

• Dictionary get_date_dict_from_unix_time ( int unix_time_val ) const

Converts the given Unix timestamp to a dictionary of keys: year, month, day, and weekday.

• String get_date_string_from_system ( bool utc=false ) const

Returns the current date as an ISO 8601 date string (YYYY-MM-DD).

The returned values are in the system’s local time when utc is false, otherwise they are in UTC.

• String get_date_string_from_unix_time ( int unix_time_val ) const

Converts the given Unix timestamp to an ISO 8601 date string (YYYY-MM-DD).

• Dictionary get_datetime_dict_from_datetime_string ( String datetime, bool weekday ) const

Converts the given ISO 8601 date and time string (YYYY-MM-DDTHH:MM:SS) to a dictionary of keys: year, month, day, weekday, hour, minute, and second.

If weekday is false, then the weekday entry is excluded (the calculation is relatively expensive).

Note: Any decimal fraction in the time string will be ignored silently.

• Dictionary get_datetime_dict_from_system ( bool utc=false ) const

Returns the current date as a dictionary of keys: year, month, day, weekday, hour, minute, and second.

• Dictionary get_datetime_dict_from_unix_time ( int unix_time_val ) const

Converts the given Unix timestamp to a dictionary of keys: year, month, day, and weekday.

The returned Dictionary’s values will be the same as the get_datetime_dict_from_system if the Unix timestamp is the current time, with the exception of Daylight Savings Time as it cannot be determined from the epoch.

• String get_datetime_string_from_datetime_dict ( Dictionary datetime, bool use_space ) const

Converts the given dictionary of keys to an ISO 8601 date and time string (YYYY-MM-DDTHH:MM:SS).

The given dictionary can be populated with the following keys: year, month, day, hour, minute, and second. Any other entries (including dst) are ignored.

If the dictionary is empty, 0 is returned. If some keys are omitted, they default to the equivalent values for the Unix epoch timestamp 0 (1970-01-01 at 00:00:00).

If use_space is true, use a space instead of the letter T in the middle.

• String get_datetime_string_from_system ( bool utc=false, bool use_space=false ) const

Returns the current date and time as an ISO 8601 date and time string (YYYY-MM-DDTHH:MM:SS).

The returned values are in the system’s local time when utc is false, otherwise they are in UTC.

If use_space is true, use a space instead of the letter T in the middle.

• String get_datetime_string_from_unix_time ( int unix_time_val, bool use_space=false ) const

Converts the given Unix timestamp to an ISO 8601 date and time string (YYYY-MM-DDTHH:MM:SS).

If use_space is true, use a space instead of the letter T in the middle.

• String get_offset_string_from_offset_minutes ( int offset_minutes ) const

Converts the given timezone offset in minutes to a timezone offset string. For example, -480 returns “-08:00”, 345 returns “+05:45”, and 0 returns “+00:00”.

• int get_ticks_msec ( ) const

Returns the amount of time passed in milliseconds since the engine started.

Will always be positive or 0 and uses a 64-bit value (it will wrap after roughly 500 million years).

• int get_ticks_usec ( ) const

Returns the amount of time passed in microseconds since the engine started.

Will always be positive or 0 and uses a 64-bit value (it will wrap after roughly half a million years).

• Dictionary get_time_dict_from_system ( bool utc=false ) const

Returns the current time as a dictionary of keys: hour, minute, and second.

The returned values are in the system’s local time when utc is false, otherwise they are in UTC.

• Dictionary get_time_dict_from_unix_time ( int unix_time_val ) const

Converts the given time to a dictionary of keys: hour, minute, and second.

• String get_time_string_from_system ( bool utc=false ) const

Returns the current time as an ISO 8601 time string (HH:MM:SS).

The returned values are in the system’s local time when utc is false, otherwise they are in UTC.

• String get_time_string_from_unix_time ( int unix_time_val ) const

Converts the given Unix timestamp to an ISO 8601 time string (HH:MM:SS).

• Dictionary get_time_zone_from_system ( ) const

Returns the current time zone as a dictionary of keys: bias and name. The bias value is the offset from UTC in minutes, since not all time zones are multiples of an hour from UTC.

• int get_unix_time_from_datetime_dict ( Dictionary datetime ) const

Converts a dictionary of time values to a Unix timestamp.

The given dictionary can be populated with the following keys: year, month, day, hour, minute, and second. Any other entries (including dst) are ignored.

If the dictionary is empty, 0 is returned. If some keys are omitted, they default to the equivalent values for the Unix epoch timestamp 0 (1970-01-01 at 00:00:00).

You can pass the output from get_datetime_dict_from_unix_time directly into this function and get the same as what was put in.

Note: Unix timestamps are often in UTC. This method does not do any timezone conversion, so the timestamp will be in the same timezone as the given datetime dictionary.

• int get_unix_time_from_datetime_string ( String datetime ) const

Converts the given ISO 8601 date and/or time string to a Unix timestamp. The string can contain a date only, a time only, or both.

Note: Unix timestamps are often in UTC. This method does not do any timezone conversion, so the timestamp will be in the same timezone as the given datetime string.

Note: Any decimal fraction in the time string will be ignored silently.

• float get_unix_time_from_system ( ) const

Returns the current Unix timestamp in seconds based on the system time in UTC. This method is implemented by the operating system and always returns the time in UTC.

Note: Unlike other methods that use integer timestamps, this method returns the timestamp as a float for sub-second precision.