Class: Time

Phaser. Time

new Time(game)

This is the core internal game clock.

It manages the elapsed time and calculation of elapsed values, used for game object motion and tweens, and also handles the standard Timer pool.

To create a general timed event, use the master Phaser.Timer accessible through events.

There are different types of time in Phaser:

  • Game time always runs at the speed of time in real life.

    Unlike wall-clock time, game time stops when Phaser is paused.

    Game time is used for timer events.

  • Physics time represents the amount of time given to physics calculations.

    When slowMotion is in effect physics time runs slower than game time. Like game time, physics time stops when Phaser is paused.

    Physics time is used for physics calculations and tweens.

  • Wall-clock time represents the duration between two events in real life time.

    This time is independent of Phaser and always progresses, regardless of if Phaser is paused.

Parameters:
Name Type Description
game Phaser.Game

A reference to the currently running game.

Source:
src/time/Time.js line 38

Members

advancedTiming :boolean

If true then advanced profiling, including the fps rate, fps min/max, suggestedFps and msMin/msMax are updated. This isn't expensive, but displaying it with Phaser.Utils.Debug#text can be, especially in WebGL mode.

Type:
  • boolean
Source:
src/time/Time.js line 170

desiredFps :integer

The desired frame rate of the game.

This is used is used to calculate the physic / logic multiplier and how to apply catch-up logic updates. The desired frame rate of the game. Defaults to 60.

Type:
  • integer
Source:
src/time/Time.js line 601

<protected> desiredFpsMult :integer

The desiredFps multiplier as used by Game.update.

Type:
  • integer
Source:
src/time/Time.js line 126

<protected> elapsed :number

Elapsed time since the last time update, in milliseconds, based on now.

This value may include time that the game is paused/inactive.

Note: This is updated only once per game loop - even if multiple logic update steps are done. Use physicsTime as a basis of game/logic calculations instead.

Type:
  • number
Source:
src/time/Time.js line 86
See:
  • Phaser.Time.time

<protected> elapsedMS :integer

The time in ms since the last time update, in milliseconds, based on time.

This value is corrected for game pauses and will be "about zero" after a game is resumed.

Note: This is updated once per game loop - even if multiple logic update steps are done. Use physicsTime as a basis of game/logic calculations instead.

Type:
  • integer
Source:
src/time/Time.js line 99

events :Phaser.Timer

A Phaser.Timer object bound to the master clock (this Time object) which events can be added to.

Type:
Source:
src/time/Time.js line 250

<readonly> fps :number

Advanced timing result: Frames per second.

Only calculated if advancedTiming is enabled.

Type:
  • number
Source:
src/time/Time.js line 188

fpsMax :number

Advanced timing result: The highest rate the fps has reached (usually no higher than 60fps).

Only calculated if advancedTiming is enabled. This value can be manually reset.

Type:
  • number
Source:
src/time/Time.js line 206

fpsMin :number

Advanced timing result: The lowest rate the fps has dropped to.

Only calculated if advancedTiming is enabled. This value can be manually reset.

Type:
  • number
Source:
src/time/Time.js line 197

<readonly> frames :integer

Advanced timing result: The number of render frames record in the last second.

Only calculated if advancedTiming is enabled.

Type:
  • integer
Source:
src/time/Time.js line 179

<protected> game :Phaser.Game

Local reference to game.

Type:
Source:
src/time/Time.js line 44

msMax :number

Advanced timing result: The maximum amount of time the game has taken between consecutive frames.

Only calculated if advancedTiming is enabled. This value can be manually reset.

Type:
  • number
Source:
src/time/Time.js line 225

msMin :number

Advanced timing result: The minimum amount of time the game has taken between consecutive frames.

Only calculated if advancedTiming is enabled. This value can be manually reset.

Type:
  • number
Default Value:
  • 1000
Source:
src/time/Time.js line 216

<protected> now :number

An increasing value representing cumulative milliseconds since an undisclosed epoch.

While this value is in milliseconds and can be used to compute time deltas, it must must not be used with Date.now() as it may not use the same epoch / starting reference.

The source may either be from a high-res source (eg. if RAF is available) or the standard Date.now; the value can only be relied upon within a particular game instance.

Type:
  • number
Source:
src/time/Time.js line 72

pauseDuration :number

Records how long the game was last paused, in milliseconds. (This is not updated until the game is resumed.)

Type:
  • number
Source:
src/time/Time.js line 232

physicsElapsed :number

The physics update delta, in fractional seconds.

This should be used as an applicable multiplier by all logic update steps (eg. preUpdate/postUpdate/update) to ensure consistent game timing. Game/logic timing can drift from real-world time if the system is unable to consistently maintain the desired FPS.

With fixed-step updates this is normally equivalent to 1.0 / desiredFps.

Type:
  • number
Source:
src/time/Time.js line 112

physicsElapsedMS :number

The physics update delta, in milliseconds - equivalent to physicsElapsed * 1000.

Type:
  • number
Source:
src/time/Time.js line 119

<protected> prevTime :number

The now when the previous update occurred.

Type:
  • number
Source:
src/time/Time.js line 58

slowMotion :number

Scaling factor to make the game move smoothly in slow motion (or fast motion)

  • 1.0 = normal speed
  • 2.0 = half speed
  • 0.5 = double speed

You likely need to adjust desiredFps as well such that desiredFps / slowMotion === 60.

Type:
  • number
Default Value:
  • 1
Source:
src/time/Time.js line 163

suggestedFps :number

The suggested frame rate for your game, based on an averaged real frame rate. This value is only populated if Time.advancedTiming is enabled.

Note: This is not available until after a few frames have passed; until then it's set to the same value as desiredFps.

Type:
  • number
Source:
src/time/Time.js line 149

<protected> time :integer

The Date.now() value when the time was last updated.

Type:
  • integer
Source:
src/time/Time.js line 51

<protected> timeExpected :number

The time when the next call is expected when using setTimer to control the update loop

Type:
  • number
Source:
src/time/Time.js line 244

<protected> timeToCall :number

The value that setTimeout needs to work out when to next update

Type:
  • number
Source:
src/time/Time.js line 238

Methods

add(timer)

Adds an existing Phaser.Timer object to the Timer pool.

Parameters:
Name Type Description
timer Phaser.Timer

An existing Phaser.Timer object.

Source:
src/time/Time.js line 313
Returns:

The given Phaser.Timer object.

Type
Phaser.Timer

<protected> boot()

Called automatically by Phaser.Game after boot. Should not be called directly.

Source:
src/time/Time.js line 298

create( [autoDestroy])

Creates a new stand-alone Phaser.Timer object.

Parameters:
Name Type Argument Default Description
autoDestroy boolean <optional>
true

A Timer that is set to automatically destroy itself will do so after all of its events have been dispatched (assuming no looping events).

Source:
src/time/Time.js line 328
Returns:

The Timer object that was created.

Type
Phaser.Timer

elapsedSecondsSince(since)

How long has passed since the given time (in seconds).

Parameters:
Name Type Description
since number

The time you want to measure (in seconds).

Source:
src/time/Time.js line 576
Returns:

Duration between given time and now (in seconds).

Type
number

elapsedSince(since)

How long has passed since the given time.

Parameters:
Name Type Description
since number

The time you want to measure against.

Source:
src/time/Time.js line 565
Returns:

The difference between the given time and now.

Type
number

refresh()

Refreshes the Time.time and Time.elapsedMS properties from the system clock.

Source:
src/time/Time.js line 365

removeAll()

Remove all Timer objects, regardless of their state and clears all Timers from the events timer.

Source:
src/time/Time.js line 347

reset()

Resets the private _started value to now and removes all currently running Timers.

Source:
src/time/Time.js line 587

totalElapsedSeconds()

The number of seconds that have elapsed since the game was started.

Source:
src/time/Time.js line 555
Returns:

The number of seconds that have elapsed since the game was started.

Type
number

<protected> update(time)

Updates the game clock and if enabled the advanced timing data. This is called automatically by Phaser.Game.

Parameters:
Name Type Description
time number

The current relative timestamp; see now.

Source:
src/time/Time.js line 383