Class: Emitter

Extends

• Phaser.Group

Members

alive : boolean

The alive property is useful for Groups that are children of other Groups and need to be included/excluded in checks like forEachAlive.

Type:

• boolean

Inherited From:

• Phaser.Group#alive

Overrides:

• Phaser.Group#alive

Default Value:

• true

Source:

src/core/Group.js line 91

alpha : number

The alpha value of the group container.

Type:

• number

Inherited From:

• Phaser.Group#alpha

Source:

src/core/Group.js line 3155

alphaData : array

An array of the calculated alpha easing data applied to particles with alphaRates > 0.

Type:

• array

Source:

src/particles/arcade/Emitter.js line 139

angle : number

The angle of rotation of the group container, in degrees.

This adjusts the group itself by modifying its local rotation transform.

This has no impact on the rotation/angle properties of the children, but it will update their worldTransform and on-screen orientation and position.

Type:

• number

Inherited From:

• Phaser.Group#angle

Source:

src/core/Group.js line 2825

angularDrag : number

The angular drag component of particles launched from the emitter if they are rotating.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 156

area : Phaser.Rectangle

The size of the emitter's emit area. The actual emit area is a rectangle of this size centered on (emitX, emitY): {x: this.left, y: this.top, width: this.area.width, height: this.area.height}. Particles are generated at a random position within this area.

Type:

• Phaser.Rectangle

Source:

src/particles/arcade/Emitter.js line 57

autoAlpha : boolean

When a new Particle is emitted this controls if it will automatically change alpha. Use Emitter.setAlpha to configure.

Type:

• boolean

Source:

src/particles/arcade/Emitter.js line 222

autoAlphaFps : number

Frames per second of autoAlpha.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 227

autoScale : boolean

When a new Particle is emitted this controls if it will automatically scale in size. Use Emitter.setScale to configure.

Type:

• boolean

Source:

src/particles/arcade/Emitter.js line 212

autoScaleFps : number

Frames per second of autoScale.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 217

blendMode : number

The blendMode as set on the particle when emitted from the Emitter. Defaults to NORMAL. Needs browser capable of supporting canvas blend-modes (most not available in WebGL)

Type:

• number

Source:

src/particles/arcade/Emitter.js line 191

<readonly> bottom : number

Gets the bottom position of the Emitter.

Type:

• number

Overrides:

• Phaser.Group#bottom

Source:

src/particles/arcade/Emitter.js line 1207

bounce : Phaser.Point

How much each particle should bounce on each axis. 1 = full bounce, 0 = no bounce.

Type:

• Phaser.Point

Source:

src/particles/arcade/Emitter.js line 173

cacheAsBitmap : boolean

Sets if this DisplayObject should be cached as a bitmap.

When invoked it will take a snapshot of the DisplayObject, as it is at that moment, and store it in a RenderTexture. This is then used whenever this DisplayObject is rendered. It can provide a performance benefit for complex, but static, DisplayObjects. I.e. those with lots of children.

Transparent areas adjoining the edges may be removed (#283).

Cached Bitmaps do not track their parents. If you update a property of this DisplayObject, it will not re-generate the cached bitmap automatically. To do that you need to call DisplayObject.updateCache.

To remove a cached bitmap, set this property to null. Cache this DisplayObject as a Bitmap. Set to null to remove an existing cached bitmap.

Type:

• boolean

Inherited From:

• PIXI.DisplayObject#cacheAsBitmap

Source:

src/pixi/display/DisplayObject.js line 791

cameraOffset : Phaser.Point

If this object is fixedToCamera then this stores the x/y position offset relative to the top-left of the camera view. If the parent of this Group is also fixedToCamera then the offset here is in addition to that and should typically be disabled.

Type:

• Phaser.Point

Inherited From:

• Phaser.Group#cameraOffset

Source:

src/core/Group.js line 277

centerX : number

The center x coordinate of this Group.

It is derived by calling getBounds, calculating the Groups dimensions based on its visible children.

Type:

• number

Inherited From:

• Phaser.Group#centerX

Source:

src/core/Group.js line 2850

centerY : number

The center y coordinate of this Group.

It is derived by calling getBounds, calculating the Groups dimensions based on its visible children.

Type:

• number

Inherited From:

• Phaser.Group#centerY

Source:

src/core/Group.js line 2876

<readonly> children : Array(DisplayObject)

[read-only] The array of children of this container.

Type:

• Array(DisplayObject)

Inherited From:

• PIXI.DisplayObjectContainer#children

Source:

src/pixi/display/DisplayObjectContainer.js line 24

classType : function

The type of objects that will be created when using create or createMultiple.

It should extend either Sprite or Image and accept the same constructor arguments: (game, x, y, key, frame).

Type:

• function

Inherited From:

• Phaser.Group#classType

Default Value:

• Phaser.Sprite

Source:

src/core/Group.js line 127

counts

Properties:

Name	Type	Description
counts	object	Records emitter activity. Properties Name Type Description emitted number How many particles were emitted during the last update. failed number How many particles could not be emitted during the last update (because no particles were available). totalEmitted number How many particles have been emitted. totalFailed number How many particles could not be emitted when they were due (because no particles were available).

Source:

src/particles/arcade/Emitter.js line 248

<readonly> cursor : DisplayObject

The last particle released, if any.

You should treat this as read-only (and also avoid next and previous) once the emitter is started. Phaser uses it internally to track particles.

Type:

• DisplayObject

Overrides:

• Phaser.Group#cursor

Source:

src/particles/arcade/Emitter.js line 1263

<readonly> cursorIndex : integer

The current index of the Group cursor. Advance it with Group.next.

Type:

• integer

Inherited From:

• Phaser.Group#cursorIndex

Source:

src/core/Group.js line 260

emitX : number

The point the particles are emitted from. Emitter.x and Emitter.y control the containers location, which updates all current particles Emitter.emitX and Emitter.emitY control the emission location relative to the x/y position.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 199

emitY : number

The point the particles are emitted from. Emitter.x and Emitter.y control the containers location, which updates all current particles Emitter.emitX and Emitter.emitY control the emission location relative to the x/y position.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 207

enableBody : boolean

If true all Sprites created by, or added to this group, will have a physics body enabled on them.

If there are children already in the Group at the time you set this property, they are not changed.

The default body type is controlled with physicsBodyType.

Type:

• boolean

Inherited From:

• Phaser.Group#enableBody

Source:

src/core/Group.js line 213

enableBodyDebug : boolean

If true when a physics body is created (via enableBody) it will create a physics debug object as well.

This only works for P2 bodies.

Type:

• boolean

Inherited From:

• Phaser.Group#enableBodyDebug

Source:

src/core/Group.js line 222

exists : boolean

If exists is false the group will be excluded from collision checks and filters such as forEachExists. The group will not call preUpdate and postUpdate on its children and the children will not receive physics updates or camera/world boundary checks. The group will still be visible and will still call update on its children (unless updateOnlyExistingChildren is true).

Type:

• boolean

Inherited From:

• Phaser.Group#exists

Overrides:

• Phaser.Group#exists

Default Value:

• true

Source:

src/core/Group.js line 98

filterArea : Rectangle

The rectangular area used by filters when rendering a shader for this DisplayObject.

Type:

• Rectangle

Inherited From:

• PIXI.DisplayObject#filterArea

Source:

src/pixi/display/DisplayObject.js line 205

filters : Array

Sets the filters for this DisplayObject. This is a WebGL only feature, and is ignored by the Canvas Renderer. A filter is a shader applied to this DisplayObject. You can modify the placement of the filter using DisplayObject.filterArea.

To remove filters, set this property to null.

Note: You cannot have a filter set, and a MULTIPLY Blend Mode active, at the same time. Setting a filter will reset this DisplayObjects blend mode to NORMAL. An Array of Phaser.Filter objects, or objects that extend them.

Type:

• Array

Inherited From:

• PIXI.DisplayObject#filters

Source:

src/pixi/display/DisplayObject.js line 740

fixedToCamera : boolean

A Group that is fixed to the camera uses its x/y coordinates as offsets from the top left of the camera. These are stored in Group.cameraOffset.

Note that the cameraOffset values are in addition to any parent in the display list. So if this Group was in a Group that has x: 200, then this will be added to the cameraOffset.x

Type:

• boolean

Inherited From:

• Phaser.Group#fixedToCamera

Source:

src/core/Group.js line 270

frequency : number

How often a particle is emitted in ms (if emitter is started with Explode === false).

Type:

• number

Default Value:

• 100

Source:

src/particles/arcade/Emitter.js line 162

<protected> game : Phaser.Game

A reference to the currently running Game.

Type:

• Phaser.Game

Inherited From:

• Phaser.Group#game

Source:

src/core/Group.js line 38

gravity : Phaser.Point

Sets the body.gravity of each particle sprite to this on launch.

Type:

• Phaser.Point

Source:

src/particles/arcade/Emitter.js line 1057

hash : array

The hash array is an array belonging to this Group into which you can add any of its children via Group.addToHash and Group.removeFromHash.

Only children of this Group can be added to and removed from the hash.

This hash is used automatically by Phaser Arcade Physics in order to perform non z-index based destructive sorting. However if you don't use Arcade Physics, or this isn't a physics enabled Group, then you can use the hash to perform your own sorting and filtering of Group children without touching their z-index (and therefore display draw order)

Type:

• array

Inherited From:

• Phaser.Group#hash

Source:

src/core/Group.js line 290

height : number

Gets or sets the height of the Emitter. This is the region in which a particle can be emitted.

Type:

• number

Overrides:

• Phaser.Group#height

Source:

src/particles/arcade/Emitter.js line 1111

hitArea : Rectangle | Circle | Ellipse | Polygon

This is the defined area that will pick up mouse / touch events. It is null by default. Setting it is a neat way of optimising the hitTest function that the interactionManager will use (as it will not need to hit test all the children)

Type:

• Rectangle | Circle | Ellipse | Polygon

Inherited From:

• PIXI.DisplayObject#hitArea

Source:

src/pixi/display/DisplayObject.js line 99

id : number

Gets the internal ID that represents this emitter.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 1082

ignoreChildInput : boolean

If ignoreChildInput is false it will allow this objects children to be considered as valid for Input events.

If this property is true then the children will not be considered as valid for Input events.

Note that this property isn't recursive: only immediate children are influenced, it doesn't scan further down.

Type:

• boolean

Inherited From:

• PIXI.DisplayObjectContainer#ignoreChildInput

Source:

src/pixi/display/DisplayObjectContainer.js line 35

ignoreDestroy : boolean

A group with ignoreDestroy set to true ignores all calls to its destroy method.

Type:

• boolean

Inherited From:

• Phaser.Group#ignoreDestroy

Source:

src/core/Group.js line 105

inputEnableChildren : boolean

A Group with inputEnableChildren set to true will automatically call inputEnabled = true on any children added to, or created by, this Group.

If there are children already in the Group at the time you set this property, they are not changed.

Type:

• boolean

Inherited From:

• Phaser.Group#inputEnableChildren

Source:

src/core/Group.js line 146

<readonly> left : number

Gets the left position of the Emitter.

Type:

• number

Overrides:

• Phaser.Group#left

Source:

src/particles/arcade/Emitter.js line 1165

<readonly> length : integer

Total number of children in this group, regardless of exists/alive status.

Type:

• integer

Inherited From:

• Phaser.Group#length

Source:

src/core/Group.js line 2809

lifespan : number

How long each particle lives once it is emitted in ms. Default is 2 seconds. Set lifespan to 'zero' for particles to live forever.

Type:

• number

Default Value:

• 2000

Source:

src/particles/arcade/Emitter.js line 168

<readonly> lifespanOutput : number

The number of particles released during one particle's lifespan, after calling flow.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 1235

mask : Phaser.Graphics

Sets a mask for this DisplayObject. A mask is an instance of a Graphics object. When applied it limits the visible area of this DisplayObject to the shape of the mask. Under a Canvas renderer it uses shape clipping. Under a WebGL renderer it uses a Stencil Buffer. To remove a mask, set this property to null. The mask applied to this DisplayObject. Set to null to remove an existing mask.

Type:

• Phaser.Graphics

Inherited From:

• PIXI.DisplayObject#mask

Source:

src/pixi/display/DisplayObject.js line 707

maxAngle : number

The maximum angle of initial particle velocities, in degrees. When set to a non-null value (with minAngle), minSpeed and maxSpeed are used and minParticleSpeed and maxParticleSpeed are ignored.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 69

maxParticleAlpha : number

The maximum possible alpha value of a particle.

Type:

• number

Default Value:

• 1

Source:

src/particles/arcade/Emitter.js line 134

maxParticles : number

The total number of particles in this emitter.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 26

maxParticleScale : number

The maximum possible scale of a particle. This is applied to the X and Y axis. If you need to control each axis see maxParticleScaleX.

Type:

• number

Default Value:

• 1

Source:

src/particles/arcade/Emitter.js line 105

maxParticleSpeed : Phaser.Point

The maximum possible velocity of a particle.

Type:

• Phaser.Point

Source:

src/particles/arcade/Emitter.js line 93

maxRotation : number

The maximum possible angular velocity of a particle.

Type:

• number

Default Value:

• 360

Source:

src/particles/arcade/Emitter.js line 122

maxSpeed : number

The maximum initial speed of particles released within minAngle and maxAngle.

Type:

• number

Default Value:

• 100

Source:

src/particles/arcade/Emitter.js line 81

minAngle : number

The minimum angle of initial particle velocities, in degrees. When set to a non-null value (with maxAngle), minSpeed and maxSpeed are used and minParticleSpeed and maxParticleSpeed are ignored.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 63

minParticleAlpha : number

The minimum possible alpha value of a particle.

Type:

• number

Default Value:

• 1

Source:

src/particles/arcade/Emitter.js line 128

minParticleScale : number

The minimum possible scale of a particle. This is applied to the X and Y axis. If you need to control each axis see minParticleScaleX.

Type:

• number

Default Value:

• 1

Source:

src/particles/arcade/Emitter.js line 99

minParticleSpeed : Phaser.Point

The minimum possible velocity of a particle.

Type:

• Phaser.Point

Source:

src/particles/arcade/Emitter.js line 87

minRotation : number

The minimum possible angular velocity of a particle.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 116

minSpeed : number

The minimum initial speed of particles released within minAngle and maxAngle.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 75

name : string

A handy string name for this emitter. Can be set to anything.

Type:

• string

Overrides:

• Phaser.Group#name

Source:

src/particles/arcade/Emitter.js line 39

on : boolean

Determines whether the emitter is currently emitting particles. It is totally safe to directly toggle this.

Type:

• boolean

Source:

src/particles/arcade/Emitter.js line 179

onChildInputDown : Phaser.Signal

This Signal is dispatched whenever a child of this Group emits an onInputDown signal as a result of having been interacted with by a Pointer. You can bind functions to this Signal instead of to every child Sprite.

This Signal is sent 2 arguments: A reference to the Sprite that triggered the signal, and a reference to the Pointer that caused it.

Type:

• Phaser.Signal

Inherited From:

• Phaser.Group#onChildInputDown

Source:

src/core/Group.js line 166

onChildInputOut : Phaser.Signal

This Signal is dispatched whenever a child of this Group emits an onInputOut signal as a result of having been interacted with by a Pointer. You can bind functions to this Signal instead of to every child Sprite.

This Signal is sent 2 arguments: A reference to the Sprite that triggered the signal, and a reference to the Pointer that caused it.

Type:

• Phaser.Signal

Inherited From:

• Phaser.Group#onChildInputOut

Source:

src/core/Group.js line 203

onChildInputOver : Phaser.Signal

This Signal is dispatched whenever a child of this Group emits an onInputOver signal as a result of having been interacted with by a Pointer. You can bind functions to this Signal instead of to every child Sprite.

This Signal is sent 2 arguments: A reference to the Sprite that triggered the signal, and a reference to the Pointer that caused it.

Type:

• Phaser.Signal

Inherited From:

• Phaser.Group#onChildInputOver

Source:

src/core/Group.js line 191

onChildInputUp : Phaser.Signal

This Signal is dispatched whenever a child of this Group emits an onInputUp signal as a result of having been interacted with by a Pointer. You can bind functions to this Signal instead of to every child Sprite.

This Signal is sent 3 arguments: A reference to the Sprite that triggered the signal, a reference to the Pointer that caused it, and a boolean value isOver that tells you if the Pointer is still over the Sprite or not.

Type:

• Phaser.Signal

Inherited From:

• Phaser.Group#onChildInputUp

Source:

src/core/Group.js line 179

onDestroy : Phaser.Signal

This signal is dispatched when the group is destroyed.

Type:

• Phaser.Signal

Inherited From:

• Phaser.Group#onDestroy

Source:

src/core/Group.js line 254

<readonly> output : number

The number of particles released per second, after calling flow.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 1221

<readonly> parent : PIXI.DisplayObjectContainer

The parent DisplayObjectContainer that this DisplayObject is a child of. All DisplayObjects must belong to a parent in order to be rendered. The root parent is the Stage object. This property is set automatically when the DisplayObject is added to, or removed from, a DisplayObjectContainer.

Type:

• PIXI.DisplayObjectContainer

Inherited From:

• PIXI.DisplayObject#parent

Source:

src/pixi/display/DisplayObject.js line 120

particleAnchor : Phaser.Point

When a particle is created its anchor will be set to match this Point object (defaults to x/y: 0.5 to aid in rotation)

Type:

• Phaser.Point

Source:

src/particles/arcade/Emitter.js line 185

particleBringToTop : boolean

If this is true then when the Particle is emitted it will be bought to the top of the Emitters display list.

Type:

• boolean

Source:

src/particles/arcade/Emitter.js line 233

particleClass : function

For emitting your own particle class types. They must extend Phaser.Particle.

Type:

• function

Source:

src/particles/arcade/Emitter.js line 145

particleDrag : Phaser.Point

The X and Y drag component of particles launched from the emitter.

Type:

• Phaser.Point

Source:

src/particles/arcade/Emitter.js line 150

particleSendToBack : boolean

If this is true then when the Particle is emitted it will be sent to the back of the Emitters display list.

Type:

• boolean

Source:

src/particles/arcade/Emitter.js line 239

pendingDestroy : boolean

A Group is that has pendingDestroy set to true is flagged to have its destroy method called on the next logic update. You can set it directly to flag the Group to be destroyed on its next update.

This is extremely useful if you wish to destroy a Group from within one of its own callbacks or a callback of one of its children.

Type:

• boolean

Inherited From:

• Phaser.Group#pendingDestroy

Source:

src/core/Group.js line 117

physicsBodyType : integer

If enableBody is true this is the type of physics body that is created on new Sprites.

The valid values are Phaser.Physics.ARCADE, Phaser.Physics.P2JS, Phaser.Physics.NINJA, etc.

Type:

• integer

Inherited From:

• Phaser.Group#physicsBodyType

Source:

src/core/Group.js line 230

physicsSortDirection : integer

If this Group contains Arcade Physics Sprites you can set a custom sort direction via this property.

It should be set to one of the Phaser.Physics.Arcade sort direction constants:

Phaser.Physics.Arcade.SORT_NONE Phaser.Physics.Arcade.LEFT_RIGHT Phaser.Physics.Arcade.RIGHT_LEFT Phaser.Physics.Arcade.TOP_BOTTOM Phaser.Physics.Arcade.BOTTOM_TOP

If set to null the Group will use whatever Phaser.Physics.Arcade.sortDirection is set to. This is the default behavior.

Type:

• integer

Inherited From:

• Phaser.Group#physicsSortDirection

Source:

src/core/Group.js line 248

<readonly> physicsType : number

The const physics body type of this object.

Type:

• number

Overrides:

• Phaser.Group#physicsType

Source:

src/particles/arcade/Emitter.js line 51

pivot : PIXI.Point

The pivot point of this DisplayObject that it rotates around. The values are expressed in pixel values.

Type:

• PIXI.Point

Inherited From:

• PIXI.DisplayObject#pivot

Source:

src/pixi/display/DisplayObject.js line 49

position : PIXI.Point

The coordinates, in pixels, of this DisplayObject, relative to its parent container.

The value of this property does not reflect any positioning happening further up the display list. To obtain that value please see the worldPosition property.

Type:

• PIXI.Point

Inherited From:

• PIXI.DisplayObject#position

Source:

src/pixi/display/DisplayObject.js line 29

<readonly> remainder : number

The expected number of unreleased particles after a flow interval of lifespan, after calling flow.

Type:

• number

Source:

src/particles/arcade/Emitter.js line 1249

renderable : boolean

Should this DisplayObject be rendered by the renderer? An object with a renderable value of false is skipped during the render pass.

Type:

• boolean

Inherited From:

• PIXI.DisplayObject#renderable

Source:

src/pixi/display/DisplayObject.js line 108

<readonly> right : number

Gets the right position of the Emitter.

Type:

• number

Overrides:

• Phaser.Group#right

Source:

src/particles/arcade/Emitter.js line 1179

rotation : number

The angle of rotation of the group container, in radians.

This will adjust the group container itself by modifying its rotation. This will have no impact on the rotation value of its children, but it will update their worldTransform and on-screen position.

Type:

• number

Inherited From:

• Phaser.Group#rotation

Source:

src/core/Group.js line 3139

scale : PIXI.Point

The scale of this DisplayObject. A scale of 1:1 represents the DisplayObject at its default size. A value of 0.5 would scale this DisplayObject by half, and so on.

The value of this property does not reflect any scaling happening further up the display list. To obtain that value please see the worldScale property.

Type:

• PIXI.Point

Inherited From:

• PIXI.DisplayObject#scale

Source:

src/pixi/display/DisplayObject.js line 41

scaleData : array

An array of the calculated scale easing data applied to particles with scaleRates > 0.

Type:

• array

Source:

src/particles/arcade/Emitter.js line 110

<readonly> top : number

Gets the top position of the Emitter.

Type:

• number

Overrides:

• Phaser.Group#top

Source:

src/particles/arcade/Emitter.js line 1193

<readonly> total : integer

Total number of existing children in the group.

Type:

• integer

Inherited From:

• Phaser.Group#total

Source:

src/core/Group.js line 2793

<protected> type : number

Internal Phaser Type value.

Type:

• number

Overrides:

• Phaser.Group#type

Source:

src/particles/arcade/Emitter.js line 45

updateOnlyExistingChildren : boolean

Skip children with exists = false in update.

Type:

• boolean

Inherited From:

• Phaser.Group#updateOnlyExistingChildren

Source:

src/core/Group.js line 154

visible : boolean

The visible state of the group. Non-visible Groups and all of their children are not rendered.

Type:

• boolean

Inherited From:

• Phaser.Group#visible

Overrides:

• Phaser.Group#visible

Source:

src/core/Group.js line 3148

width : number

Gets or sets the width of the Emitter. This is the region in which a particle can be emitted.

Type:

• number

Overrides:

• Phaser.Group#width

Source:

src/particles/arcade/Emitter.js line 1093

<readonly> worldAlpha : number

The multiplied alpha value of this DisplayObject. A value of 1 is fully opaque. A value of 0 is transparent. This value is the calculated total, based on the alpha values of all parents of this DisplayObjects in the display list.

To obtain, and set, the local alpha value, see the alpha property.

Note: This property is only updated at the end of the updateTransform call, once per render. Until that happens this property will contain values based on the previous frame. Be mindful of this if accessing this property outside of the normal game flow, i.e. from an asynchronous event callback.

Type:

• number

Inherited From:

• PIXI.DisplayObject#worldAlpha

Source:

src/pixi/display/DisplayObject.js line 136

<readonly> worldPosition : PIXI.Point

The coordinates, in pixels, of this DisplayObject within the world.

This property contains the calculated total, based on the positions of all parents of this DisplayObject in the display list.

Note: This property is only updated at the end of the updateTransform call, once per render. Until that happens this property will contain values based on the previous frame. Be mindful of this if accessing this property outside of the normal game flow, i.e. from an asynchronous event callback.

Type:

• PIXI.Point

Inherited From:

• PIXI.DisplayObject#worldPosition

Source:

src/pixi/display/DisplayObject.js line 166

<readonly> worldRotation : number

The rotation, in radians, of this DisplayObject.

This property contains the calculated total, based on the rotations of all parents of this DisplayObject in the display list.

Note: This property is only updated at the end of the updateTransform call, once per render. Until that happens this property will contain values based on the previous frame. Be mindful of this if accessing this property outside of the normal game flow, i.e. from an asynchronous event callback.

Type:

• number

Inherited From:

• PIXI.DisplayObject#worldRotation

Source:

src/pixi/display/DisplayObject.js line 196

<readonly> worldScale : PIXI.Point

The global scale of this DisplayObject.

This property contains the calculated total, based on the scales of all parents of this DisplayObject in the display list.

Note: This property is only updated at the end of the updateTransform call, once per render. Until that happens this property will contain values based on the previous frame. Be mindful of this if accessing this property outside of the normal game flow, i.e. from an asynchronous event callback.

Type:

• PIXI.Point

Inherited From:

• PIXI.DisplayObject#worldScale

Source:

src/pixi/display/DisplayObject.js line 181

<readonly> worldTransform : Phaser.Matrix

The current transform of this DisplayObject.

This property contains the calculated total, based on the transforms of all parents of this DisplayObject in the display list.

Note: This property is only updated at the end of the updateTransform call, once per render. Until that happens this property will contain values based on the previous frame. Be mindful of this if accessing this property outside of the normal game flow, i.e. from an asynchronous event callback.

Type:

• Phaser.Matrix

Inherited From:

• PIXI.DisplayObject#worldTransform

Source:

src/pixi/display/DisplayObject.js line 151

worldVisible : boolean

Indicates if this DisplayObject is visible, based on it, and all of its parents, visible property values.

Type:

• boolean

Inherited From:

• PIXI.DisplayObject#worldVisible

Source:

src/pixi/display/DisplayObject.js line 666

x : number

Gets or sets the x position of the Emitter.

Type:

• number

Overrides:

• Phaser.Group#x

Source:

src/particles/arcade/Emitter.js line 1129

y : number

Gets or sets the y position of the Emitter.

Type:

• number

Overrides:

• Phaser.Group#y

Source:

src/particles/arcade/Emitter.js line 1147

<readonly> z : integer

The z-depth value of this object within its parent container/Group - the World is a Group as well. This value must be unique for each child in a Group.

Type:

• integer

Inherited From:

• Phaser.Group#z

Source:

src/core/Group.js line 57

Methods

add(child [, silent] [, index])

Adds an existing object as the top child in this group.

The child is automatically added to the top of the group, and is displayed above every previous child.

Or if the optional index is specified, the child is added at the location specified by the index value, this allows you to control child ordering.

If the child was already in this Group, it is simply returned, and nothing else happens to it.

If Group.enableBody is set, then a physics body will be created on the object, so long as one does not already exist.

If Group.inputEnableChildren is set, then an Input Handler will be created on the object, so long as one does not already exist.

Use create to create and add a new child.

Parameters:

Name	Type	Argument	Default	Description
child	DisplayObject			The display object to add as a child.
silent	boolean	<optional>	false	If true the child will not dispatch the onAddedToGroup event.
index	integer	<optional>		The index within the group to insert the child to. Where 0 is the bottom of the Group.

Inherited From:

• Phaser.Group#add

Source:

src/core/Group.js line 345

Returns:

The child that was added to the group.

Type

DisplayObject

addAll(property, amount [, checkAlive] [, checkVisible])

Adds the amount to the given property on all children in this group.

Group.addAll('x', 10) will add 10 to the child.x value for each child.

Parameters:

Name	Type	Argument	Description
property	string		The property to increment, for example 'body.velocity.x' or 'angle'.
amount	number		The amount to increment the property by. If child.x = 10 then addAll('x', 40) would make child.x = 50.
checkAlive	boolean	<optional>	If true the property will only be changed if the child is alive.
checkVisible	boolean	<optional>	If true the property will only be changed if the child is visible.

Inherited From:

• Phaser.Group#addAll

Source:

src/core/Group.js line 1417

addAt(child [, index] [, silent])

Adds an existing object to this group.

The child is added to the group at the location specified by the index value, this allows you to control child ordering.

If Group.enableBody is set, then a physics body will be created on the object, so long as one does not already exist.

If Group.inputEnableChildren is set, then an Input Handler will be created on the object, so long as one does not already exist.

Parameters:

Name	Type	Argument	Default	Description
child	DisplayObject			The display object to add as a child.
index	integer	<optional>	0	The index within the group to insert the child to.
silent	boolean	<optional>	false	If true the child will not dispatch the onAddedToGroup event.

Inherited From:

• Phaser.Group#addAt

Source:

src/core/Group.js line 421

Returns:

The child that was added to the group.

Type

DisplayObject

addChild(child)

Adds a child to the container.

Parameters:

Name	Type	Description
child	DisplayObject	The DisplayObject to add to the container

Inherited From:

• PIXI.DisplayObjectContainer#addChild

Source:

src/pixi/display/DisplayObjectContainer.js line 41

Returns:

The child that was added.

Type

DisplayObject

addChildAt(child, index)

Adds a child to the container at a specified index. If the index is out of bounds an error will be thrown

Parameters:

Name	Type	Description
child	DisplayObject	The child to add
index	Number	The index to place the child in

Inherited From:

• PIXI.DisplayObjectContainer#addChildAt

Source:

src/pixi/display/DisplayObjectContainer.js line 53

Returns:

The child that was added.

Type

DisplayObject

addMultiple(children [, silent])

Adds an array of existing Display Objects to this Group.

The Display Objects are automatically added to the top of this Group, and will render on-top of everything already in this Group.

As well as an array you can also pass another Group as the first argument. In this case all of the children from that Group will be removed from it and added into this Group.

If Group.enableBody is set, then a physics body will be created on the objects, so long as one does not already exist.

If Group.inputEnableChildren is set, then an Input Handler will be created on the objects, so long as one does not already exist.

Parameters:

Name	Type	Argument	Default	Description
children	Array.<DisplayObject> | Phaser.Group			An array of display objects or a Phaser.Group. If a Group is given then all children will be moved from it.
silent	boolean	<optional>	false	If true the children will not dispatch the onAddedToGroup event.

Inherited From:

• Phaser.Group#addMultiple

Source:

src/core/Group.js line 489

Returns:

The array of children or Group of children that were added to this Group.

Type

Array.<DisplayObject> | Phaser.Group

addToHash(child)

Adds a child of this Group into the hash array. This call will return false if the child is not a child of this Group, or is already in the hash.

Parameters:

Name	Type	Description
child	DisplayObject	The display object to add to this Groups hash. Must be a member of this Group already and not present in the hash.

Inherited From:

• Phaser.Group#addToHash

Source:

src/core/Group.js line 441

Returns:

True if the child was successfully added to the hash, otherwise false.

Type

boolean

align(width, height, cellWidth, cellHeight [, position] [, offset])

This method iterates through all children in the Group (regardless if they are visible or exist) and then changes their position so they are arranged in a Grid formation. Children must have the alignTo method in order to be positioned by this call. All default Phaser Game Objects have this.

The grid dimensions are determined by the first four arguments. The width and height arguments relate to the width and height of the grid respectively.

For example if the Group had 100 children in it:

Group.align(10, 10, 32, 32)

This will align all of the children into a grid formation of 10x10, using 32 pixels per grid cell. If you want a wider grid, you could do:

Group.align(25, 4, 32, 32)

This will align the children into a grid of 25x4, again using 32 pixels per grid cell.

You can choose to set either the width or height value to -1. Doing so tells the method to keep on aligning children until there are no children left. For example if this Group had 48 children in it, the following:

Group.align(-1, 8, 32, 32)

... will align the children so that there are 8 children vertically (the second argument), and each row will contain 6 sprites, except the last one, which will contain 5 (totaling 48)

You can also do:

Group.align(10, -1, 32, 32)

In this case it will create a grid 10 wide, and as tall as it needs to be in order to fit all of the children in.

The position property allows you to control where in each grid cell the child is positioned. This is a constant and can be one of Phaser.TOP_LEFT (default), Phaser.TOP_CENTER, Phaser.TOP_RIGHT, Phaser.LEFT_CENTER, Phaser.CENTER, Phaser.RIGHT_CENTER, Phaser.BOTTOM_LEFT, Phaser.BOTTOM_CENTER or Phaser.BOTTOM_RIGHT.

The final argument; offset lets you start the alignment from a specific child index.

Parameters:

Name	Type	Argument	Default	Description
width	integer			The width of the grid in items (not pixels). Set to -1 for a dynamic width. If -1 then you must set an explicit height value.
height	integer			The height of the grid in items (not pixels). Set to -1 for a dynamic height. If -1 then you must set an explicit width value.
cellWidth	integer			The width of each grid cell, in pixels.
cellHeight	integer			The height of each grid cell, in pixels.
position	integer	<optional>		The position constant. One of Phaser.TOP_LEFT (default), Phaser.TOP_CENTER, Phaser.TOP_RIGHT, Phaser.LEFT_CENTER, Phaser.CENTER, Phaser.RIGHT_CENTER, Phaser.BOTTOM_LEFT, Phaser.BOTTOM_CENTER or Phaser.BOTTOM_RIGHT.
offset	integer	<optional>	0	Optional index to start the alignment from. Defaults to zero, the first child in the Group, but can be set to any valid child index value.

Inherited From:

• Phaser.Group#align

Source:

src/core/Group.js line 681

Returns:

True if the Group children were aligned, otherwise false.

Type

boolean

alignIn(container [, position] [, offsetX] [, offsetY])

Aligns this Group within another Game Object, or Rectangle, known as the 'container', to one of 9 possible positions.

The container must be a Game Object, or Phaser.Rectangle object. This can include properties such as World.bounds or Camera.view, for aligning Groups within the world and camera bounds. Or it can include other Sprites, Images, Text objects, BitmapText, TileSprites or Buttons.

Please note that aligning a Group to another Game Object does not make it a child of the container. It simply modifies its position coordinates so it aligns with it.

The position constants you can use are:

Phaser.TOP_LEFT, Phaser.TOP_CENTER, Phaser.TOP_RIGHT, Phaser.LEFT_CENTER, Phaser.CENTER, Phaser.RIGHT_CENTER, Phaser.BOTTOM_LEFT, Phaser.BOTTOM_CENTER and Phaser.BOTTOM_RIGHT.

Groups are placed in such a way that their bounds align with the container, taking into consideration rotation and scale of its children. This allows you to neatly align Groups, irrespective of their position value.

The optional offsetX and offsetY arguments allow you to apply extra spacing to the final aligned position of the Group. For example:

group.alignIn(background, Phaser.BOTTOM_RIGHT, -20, -20)

Would align the group to the bottom-right, but moved 20 pixels in from the corner. Think of the offsets as applying an adjustment to the containers bounds before the alignment takes place. So providing a negative offset will 'shrink' the container bounds by that amount, and providing a positive one expands it.

Parameters:

Name	Type	Argument	Default	Description
container	Phaser.Rectangle | Phaser.Sprite | Phaser.Image | Phaser.Text | Phaser.BitmapText | Phaser.Button | Phaser.Graphics | Phaser.TileSprite			The Game Object or Rectangle with which to align this Group to. Can also include properties such as World.bounds or Camera.view.
position	integer	<optional>		The position constant. One of Phaser.TOP_LEFT (default), Phaser.TOP_CENTER, Phaser.TOP_RIGHT, Phaser.LEFT_CENTER, Phaser.CENTER, Phaser.RIGHT_CENTER, Phaser.BOTTOM_LEFT, Phaser.BOTTOM_CENTER or Phaser.BOTTOM_RIGHT.
offsetX	integer	<optional>	0	A horizontal adjustment of the Containers bounds, applied to the aligned position of the Game Object. Use a negative value to shrink the bounds, positive to increase it.
offsetY	integer	<optional>	0	A vertical adjustment of the Containers bounds, applied to the aligned position of the Game Object. Use a negative value to shrink the bounds, positive to increase it.

Inherited From:

• Phaser.Group#alignIn

Source:

src/core/Group.js line 3006

Returns:

This Group.

Type

Phaser.Group

alignTo(parent [, position] [, offsetX] [, offsetY])

Aligns this Group to the side of another Game Object, or Rectangle, known as the 'parent', in one of 11 possible positions.

The parent must be a Game Object, or Phaser.Rectangle object. This can include properties such as World.bounds or Camera.view, for aligning Groups within the world and camera bounds. Or it can include other Sprites, Images, Text objects, BitmapText, TileSprites or Buttons.

Please note that aligning a Group to another Game Object does not make it a child of the parent. It simply modifies its position coordinates so it aligns with it.

The position constants you can use are:

Phaser.TOP_LEFT (default), Phaser.TOP_CENTER, Phaser.TOP_RIGHT, Phaser.LEFT_TOP, Phaser.LEFT_CENTER, Phaser.LEFT_BOTTOM, Phaser.RIGHT_TOP, Phaser.RIGHT_CENTER, Phaser.RIGHT_BOTTOM, Phaser.BOTTOM_LEFT, Phaser.BOTTOM_CENTER and Phaser.BOTTOM_RIGHT.

Groups are placed in such a way that their bounds align with the parent, taking into consideration rotation and scale of the children. This allows you to neatly align Groups, irrespective of their position value.

The optional offsetX and offsetY arguments allow you to apply extra spacing to the final aligned position of the Group. For example:

group.alignTo(background, Phaser.BOTTOM_RIGHT, -20, -20)

Would align the group to the bottom-right, but moved 20 pixels in from the corner. Think of the offsets as applying an adjustment to the parents bounds before the alignment takes place. So providing a negative offset will 'shrink' the parent bounds by that amount, and providing a positive one expands it.

Parameters:

Name	Type	Argument	Default	Description
parent	Phaser.Rectangle | Phaser.Sprite | Phaser.Image | Phaser.Text | Phaser.BitmapText | Phaser.Button | Phaser.Graphics | Phaser.TileSprite			The Game Object or Rectangle with which to align this Group to. Can also include properties such as World.bounds or Camera.view.
position	integer	<optional>		The position constant. One of Phaser.TOP_LEFT, Phaser.TOP_CENTER, Phaser.TOP_RIGHT, Phaser.LEFT_TOP, Phaser.LEFT_CENTER, Phaser.LEFT_BOTTOM, Phaser.RIGHT_TOP, Phaser.RIGHT_CENTER, Phaser.RIGHT_BOTTOM, Phaser.BOTTOM_LEFT, Phaser.BOTTOM_CENTER or Phaser.BOTTOM_RIGHT.
offsetX	integer	<optional>	0	A horizontal adjustment of the Containers bounds, applied to the aligned position of the Game Object. Use a negative value to shrink the bounds, positive to increase it.
offsetY	integer	<optional>	0	A vertical adjustment of the Containers bounds, applied to the aligned position of the Game Object. Use a negative value to shrink the bounds, positive to increase it.

Inherited From:

• Phaser.Group#alignTo

Source:

src/core/Group.js line 3048

Returns:

This Group.

Type

Phaser.Group

<protected> ascendingSortHandler(a, b)

An internal helper function for the sort process.

Parameters:

Name	Type	Description
a	object	The first object being sorted.
b	object	The second object being sorted.

Inherited From:

• Phaser.Group#ascendingSortHandler

Source:

src/core/Group.js line 2024

at(object)

Change the emitter's center to match the center of any object with a center property, such as an Arcade Body. If the object doesn't have a center property it will be set to the object's anchor-adjusted world position (object.world).

Parameters:

Name	Type	Description
object	object | Phaser.Sprite | Phaser.Image | Phaser.TileSprite | Phaser.Text | PIXI.DisplayObject	The object that you wish to match the center with.

Source:

src/particles/arcade/Emitter.js line 1033

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

bringToTop(child)

Brings the given child to the top of this group so it renders above all other children.

Parameters:

Name	Type	Description
child	any	The child to bring to the top of this group.

Inherited From:

• Phaser.Group#bringToTop

Source:

src/core/Group.js line 901

Returns:

The child that was moved.

Type

any

callAll(method [, context], args)

Calls a function, specified by name, on all on children.

The function is called for all children regardless if they are dead or alive (see callAllExists for different options). After the method parameter and context you can add as many extra parameters as you like, which will all be passed to the child.

Parameters:

Name	Type	Argument	Default	Description
method	string			Name of the function on the child to call. Deep property lookup is supported.
context	string	<optional>	null	A string containing the context under which the method will be executed. Set to null to default to the child.
args	any	<repeatable>		Additional parameters that will be passed to the method.

Inherited From:

• Phaser.Group#callAll

Source:

src/core/Group.js line 1624

callAllExists(callback, existsValue, parameter)

Calls a function, specified by name, on all children in the group who exist (or do not exist).

After the existsValue parameter you can add as many parameters as you like, which will all be passed to the child callback.

Parameters:

Name	Type	Argument	Description
callback	string		Name of the function on the children to call.
existsValue	boolean		Only children with exists=existsValue will be called.
parameter	any	<repeatable>	Additional parameters that will be passed to the callback.

Inherited From:

• Phaser.Group#callAllExists

Source:

src/core/Group.js line 1540

<protected> callbackFromArray(child, callback, length)

Returns a reference to a function that exists on a child of the group based on the given callback array.

Parameters:

Name	Type	Description
child	object	The object to inspect.
callback	array	The array of function names.
length	integer	The size of the array (pre-calculated in callAll).

Inherited From:

• Phaser.Group#callbackFromArray

Source:

src/core/Group.js line 1575

checkAll(key, value [, checkAlive] [, checkVisible] [, force])

Test that the same property across all children of this group is equal to the given value.

This call doesn't descend down children, so if you have a Group inside of this group, the property will be checked on the group but not its children.

Parameters:

Name	Type	Argument	Default	Description
key	string			The property, as a string, to be checked. For example: 'body.velocity.x'
value	any			The value that will be checked.
checkAlive	boolean	<optional>	false	If set then only children with alive=true will be checked. This includes any Groups that are children.
checkVisible	boolean	<optional>	false	If set then only children with visible=true will be checked. This includes any Groups that are children.
force	boolean	<optional>	false	Also return false if the property is missing or undefined (regardless of the value argument).

Inherited From:

• Phaser.Group#checkAll

Source:

src/core/Group.js line 1349

Returns:

• True if all eligible children have the given property value (but see force); otherwise false.

Type

boolean

checkAny(key, value [, checkAlive] [, checkVisible])

Test that at least one child of this group has the given property value.

This call doesn't descend down children, so if you have a Group inside of this group, the property will be checked on the group but not its children.

Parameters:

Name	Type	Argument	Default	Description
key	string			The property, as a string, to be checked. For example: 'body.velocity.x'
value	any			The value that will be checked.
checkAlive	boolean	<optional>	false	If set then only children with alive=true will be checked. This includes any Groups that are children.
checkVisible	boolean	<optional>	false	If set then only children with visible=true will be checked. This includes any Groups that are children.

Inherited From:

• Phaser.Group#checkAny

Source:

src/core/Group.js line 1384

Returns:

• True if at least one eligible child has the given property value; otherwise false.

Type

boolean

checkProperty(child, key, value [, force])

Checks a property for the given value on the child.

Parameters:

Name	Type	Argument	Default	Description
child	any			The child to check the property value on.
key	string			The property, as a string, to be checked. For example: 'body.velocity.x'
value	any			The value that will be checked.
force	boolean	<optional>	false	Also return false if the property is missing or undefined (regardless of the value argument).

Inherited From:

• Phaser.Group#checkProperty

Source:

src/core/Group.js line 1208

Returns:

True if child is a child of this Group and the property was equal to value, false if not.

Type

boolean

contains(child)

Determines whether the specified display object is a child of the DisplayObjectContainer instance or the instance itself.

Parameters:

Name	Type	Description
child	DisplayObject

Inherited From:

• PIXI.DisplayObjectContainer#contains

Source:

src/pixi/display/DisplayObjectContainer.js line 456

Returns:

Type

boolean

count(key, value)

Get the number of children with the given property name and value.

Parameters:

Name	Type	Description
key	string	The child property to check.
value	string	A child matches if child[key] === value is true.

Inherited From:

• Phaser.Group#count

Source:

src/core/Group.js line 2431

Returns:

The number of children matching the query.

Type

integer

countDead()

Get the number of dead children in this group.

Inherited From:

• Phaser.Group#countDead

Source:

src/core/Group.js line 2455

Returns:

The number of children flagged as dead.

Type

integer

countLiving()

Get the number of living children in this group.

Inherited From:

• Phaser.Group#countLiving

Source:

src/core/Group.js line 2444

Returns:

The number of children flagged as alive.

Type

integer

create(x, y [, key] [, frame] [, exists] [, index])

Creates a new Phaser.Sprite object and adds it to the top of this group.

Use classType to change the type of object created.

The child is automatically added to the top of the group, and is displayed above every previous child.

Or if the optional index is specified, the child is added at the location specified by the index value, this allows you to control child ordering.

If Group.enableBody is set, then a physics body will be created on the object, so long as one does not already exist.

If Group.inputEnableChildren is set, then an Input Handler will be created on the object, so long as one does not already exist.

Parameters:

Name	Type	Argument	Default	Description
x	number			The x coordinate to display the newly created Sprite at. The value is in relation to the group.x point.
y	number			The y coordinate to display the newly created Sprite at. The value is in relation to the group.y point.
key	string | Phaser.RenderTexture | Phaser.BitmapData | Phaser.Video | PIXI.Texture	<optional>		This is the image or texture used by the Sprite during rendering. It can be a string which is a reference to the Cache Image entry, or an instance of a RenderTexture, BitmapData, Video or PIXI.Texture.
frame	string | number	<optional>		If this Sprite is using part of a sprite sheet or texture atlas you can specify the exact frame to use by giving a string or numeric index.
exists	boolean	<optional>	true	The default exists state of the Sprite.
index	integer	<optional>		The index within the group to insert the child to. Where 0 is the bottom of the Group.

Inherited From:

• Phaser.Group#create

Source:

src/core/Group.js line 542

Returns:

The child that was created: will be a Phaser.Sprite unless #classType has been changed.

Type

DisplayObject

createMultiple(quantity, key [, frame] [, exists] [, callback] [, callbackContext])

Creates multiple Phaser.Sprite objects and adds them to the top of this Group.

This method is useful if you need to quickly generate a pool of sprites, such as bullets.

Use classType to change the type of object created.

You can provide an array as the key and / or frame arguments. When you do this it will create quantity Sprites for every key (and frame) in the arrays.

For example:

createMultiple(25, ['ball', 'carrot'])

In the above code there are 2 keys (ball and carrot) which means that 50 sprites will be created in total, 25 of each. You can also have the frame as an array:

createMultiple(5, 'bricks', [0, 1, 2, 3])

In the above there is one key (bricks), which is a sprite sheet. The frames array tells this method to use frames 0, 1, 2 and 3. So in total it will create 20 sprites, because the quantity was set to 5, so that is 5 brick sprites of frame 0, 5 brick sprites with frame 1, and so on.

If you set both the key and frame arguments to be arrays then understand it will create a total quantity of sprites equal to the size of both arrays times each other. I.e.:

createMultiple(20, ['diamonds', 'balls'], [0, 1, 2])

The above will create 20 'diamonds' of frame 0, 20 with frame 1 and 20 with frame 2. It will then create 20 'balls' of frame 0, 20 with frame 1 and 20 with frame 2. In total it will have created 120 sprites.

By default the Sprites will have their exists property set to false, and they will be positioned at 0x0, relative to the Group.x / y values.

If Group.enableBody is set, then a physics body will be created on the objects, so long as one does not already exist.

If Group.inputEnableChildren is set, then an Input Handler will be created on the objects, so long as one does not already exist.

Parameters:

Name	Type	Argument	Default	Description
quantity	integer			The number of Sprites to create.
key	string | array			The Cache key of the image that the Sprites will use. Or an Array of keys. See the description for details on how the quantity applies when arrays are used.
frame	integer | string | array	<optional>	0	If the Sprite image contains multiple frames you can specify which one to use here. Or an Array of frames. See the description for details on how the quantity applies when arrays are used.
exists	boolean	<optional>	false	The default exists state of the Sprite.
callback	function	<optional>		The function that will be called for each applicable child. It will be passed the new child and the loop index (0 through quantity - 1).
callbackContext	object	<optional>		The context in which the function should be called (usually 'this'). The default context is the new child.

Inherited From:

• Phaser.Group#createMultiple

Source:

src/core/Group.js line 578

Returns:

An array containing all of the Sprites that were created.

Type

array

customSort(sortHandler [, context])

Sort the children in the group according to custom sort function.

The sortHandler is provided the two parameters: the two children involved in the comparison (a and b). It should return -1 if a > b, 1 if a < b or 0 if a === b.

Parameters:

Name	Type	Argument	Description
sortHandler	function		The custom sort function.
context	object	<optional>	The context in which the sortHandler is called.

Inherited From:

• Phaser.Group#customSort

Source:

src/core/Group.js line 2001

<protected> descendingSortHandler(a, b)

An internal helper function for the sort process.

Parameters:

Name	Type	Description
a	object	The first object being sorted.
b	object	The second object being sorted.

Inherited From:

• Phaser.Group#descendingSortHandler

Source:

src/core/Group.js line 2053

destroy()

Destroys this Emitter, all associated child Particles and then removes itself from the Particle Manager.

Overrides:

• Phaser.Group#destroy

Source:

src/particles/arcade/Emitter.js line 794

divideAll(property, amount, checkAlive, checkVisible)

Divides the given property by the amount on all children in this group.

Group.divideAll('x', 2) will half the child.x value for each child.

Parameters:

Name	Type	Description
property	string	The property to divide, for example 'body.velocity.x' or 'angle'.
amount	number	The amount to divide the property by. If child.x = 100 then divideAll('x', 2) would make child.x = 50.
checkAlive	boolean	If true the property will only be changed if the child is alive.
checkVisible	boolean	If true the property will only be changed if the child is visible.

Inherited From:

• Phaser.Group#divideAll

Source:

src/core/Group.js line 1465

emitParticle( [x] [, y] [, key] [, frame])

This function is used internally to emit the next particle in the queue.

However it can also be called externally to emit a particle.

When called externally you can use the arguments to override any defaults the Emitter has set.

The newly emitted particle is available in Phaser.Particles.Arcade.Emitter#cursor.

Parameters:

Name	Type	Argument	Description
x	number	<optional>	The x coordinate to emit the particle from. If null or undefined it will use Emitter.emitX or if the Emitter has a width > 1 a random value between Emitter.left and Emitter.right.
y	number	<optional>	The y coordinate to emit the particle from. If null or undefined it will use Emitter.emitY or if the Emitter has a height > 1 a random value between Emitter.top and Emitter.bottom.
key	string | Phaser.RenderTexture | Phaser.BitmapData | Phaser.Video | PIXI.Texture	<optional>	This is the image or texture used by the Particle during rendering. It can be a string which is a reference to the Cache Image entry, or an instance of a RenderTexture, BitmapData, Video or PIXI.Texture.
frame	string | number	<optional>	If this Particle is using part of a sprite sheet or texture atlas you can specify the exact frame to use by giving a string or numeric index.

Source:

src/particles/arcade/Emitter.js line 617

Returns:

True if a particle was emitted, otherwise false.

Type

boolean

explode( [lifespan] [, quantity])

Call this function to emit the given quantity of particles at all once (an explosion)

Parameters:

Name	Type	Argument	Default	Description
lifespan	number	<optional>	0	How long each particle lives once emitted in ms. 0 = forever.
quantity	number	<optional>	this.maxParticles	How many particles to launch.

Source:

src/particles/arcade/Emitter.js line 478

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

filter(predicate [, checkExists])

Find children matching a certain predicate.

For example:

var healthyList = Group.filter(function(child, index, children) {
    return child.health > 10 ? true : false;
}, true);
healthyList.callAll('attack');

Note: Currently this will skip any children which are Groups themselves.

Parameters:

Name	Type	Argument	Default	Description
predicate	function			The function that each child will be evaluated against. Each child of the group will be passed to it as its first parameter, the index as the second, and the entire child array as the third
checkExists	boolean	<optional>	false	If true, only existing can be selected; otherwise all children can be selected and will be passed to the predicate.

Inherited From:

• Phaser.Group#filter

Source:

src/core/Group.js line 1783

Returns:

Returns an array list containing all the children that the predicate returned true for

Type

Phaser.ArraySet

flow( [lifespan] [, frequency] [, quantity] [, total] [, immediate])

Call this function to start emitting a flow of particles. quantity particles are released every interval of frequency ms until total particles have been released (or forever). If you set the total to be 20 and quantity to be 5 then flow will emit 4 times in total (4 × 5 = 20 total) and then turn off. If you set the total to be -1 then no quantity cap is used and it will keep emitting (as long as there are inactive particles available).

output, lifespanOutput, and remainder describe the particle flow rate. During a stable flow, the number of active particles approaches lifespanOutput and the number of inactive particles approaches remainder. If remainder is less than 0, there will likely be no particles available for a portion of the flow (see count).

Parameters:

Name	Type	Argument	Default	Description
lifespan	number	<optional>	0	How long each particle lives once emitted in ms. 0 = forever.
frequency	number	<optional>	250	The interval between each release of particles, given in ms. Values between 0 and 16.66 will behave the same (60 releases per second).
quantity	number	<optional>	1	How many particles to launch at each interval. Not larger than #maxParticles.
total	number	<optional>	-1	Turn off after launching this many particles in total. If -1 it will carry on indefinitely.
immediate	boolean	<optional>	true	Should the flow start immediately (true) or wait until the first frequency event? (false)

Source:

src/particles/arcade/Emitter.js line 500

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

forEach(callback, callbackContext [, checkExists] [, args])

Call a function on each child in this group.

Additional arguments for the callback can be specified after the checkExists parameter. For example,

Group.forEach(awardBonusGold, this, true, 100, 500)

would invoke awardBonusGold function with the parameters (child, 100, 500).

Note: This check will skip any children which are Groups themselves.

Parameters:

Name	Type	Argument	Default	Description
callback	function			The function that will be called for each applicable child. The child will be passed as the first argument.
callbackContext	object			The context in which the function should be called (usually 'this').
checkExists	boolean	<optional>	false	If set only children matching for which exists is true will be passed to the callback, otherwise all children will be passed.
args	any	<optional> <repeatable>	(none)	Additional arguments to pass to the callback function, after the child item.

Inherited From:

• Phaser.Group#forEach

Source:

src/core/Group.js line 1822

forEachAlive(callback, callbackContext [, args])

Call a function on each alive child in this group.

See forEach for details.

Parameters:

Name	Type	Argument	Default	Description
callback	function			The function that will be called for each applicable child. The child will be passed as the first argument.
callbackContext	object			The context in which the function should be called (usually 'this').
args	any	<optional> <repeatable>	(none)	Additional arguments to pass to the callback function, after the child item.

Inherited From:

• Phaser.Group#forEachAlive

Source:

src/core/Group.js line 1908

forEachDead(callback, callbackContext [, args])

Call a function on each dead child in this group.

See forEach for details.

Parameters:

Name	Type	Argument	Default	Description
callback	function			The function that will be called for each applicable child. The child will be passed as the first argument.
callbackContext	object			The context in which the function should be called (usually 'this').
args	any	<optional> <repeatable>	(none)	Additional arguments to pass to the callback function, after the child item.

Inherited From:

• Phaser.Group#forEachDead

Source:

src/core/Group.js line 1935

forEachExists(callback, callbackContext [, args])

Call a function on each existing child in this group.

See forEach for details.

Parameters:

Name	Type	Argument	Default	Description
callback	function			The function that will be called for each applicable child. The child will be passed as the first argument.
callbackContext	object			The context in which the function should be called (usually 'this').
args	any	<optional> <repeatable>	(none)	Additional arguments to pass to the callback function, after the child item.

Inherited From:

• Phaser.Group#forEachExists

Source:

src/core/Group.js line 1881

generateTexture( [resolution] [, scaleMode], renderer)

Generates a RenderTexture based on this DisplayObject, which can they be used to texture other Sprites. This can be useful if your DisplayObject is static, or complicated, and needs to be reused multiple times.

Please note that no garbage collection takes place on old textures. It is up to you to destroy old textures, and references to them, so they don't linger in memory.

Parameters:

Name	Type	Argument	Default	Description
resolution	number	<optional>	1	The resolution of the texture being generated.
scaleMode	number	<optional>	PIXI.scaleModes.DEFAULT	See {{#crossLink "PIXI/scaleModes:property"}}PIXI.scaleModes{{/crossLink}} for possible values.
renderer	PIXI.CanvasRenderer | PIXI.WebGLRenderer			The renderer used to generate the texture.

Inherited From:

• PIXI.DisplayObject#generateTexture

Source:

src/pixi/display/DisplayObject.js line 443

Returns:

• A RenderTexture containing an image of this DisplayObject at the time it was invoked.

Type

Phaser.RenderTexture

getAll( [property] [, value] [, startIndex] [, endIndex])

Returns all children in this Group.

You can optionally specify a matching criteria using the property and value arguments.

For example: getAll('exists', true) would return only children that have an exists property equal to true.

Optionally you can specify a start and end index. For example if this Group had 100 children, and you set startIndex to 0 and endIndex to 50, it would return the first 50 children in the Group. If property and value are also specified, only children within the given index range are searched.

Parameters:

Name	Type	Argument	Default	Description
property	string	<optional>		An optional property to test against the value argument.
value	any	<optional>		If property is set then Child.property must strictly equal this value to be included in the results.
startIndex	integer	<optional>	0	The first child index to start the search from.
endIndex	integer	<optional>		The last child index to search up until.

Inherited From:

• Phaser.Group#getAll

Source:

src/core/Group.js line 2506

Returns:

• An array containing all, some, or none of the Children of this Group.

Type

array

getAt(index)

Returns the child found at the given index within this group.

Parameters:

Name	Type	Description
index	integer	The index to return the child from.

Inherited From:

• Phaser.Group#getAt

Source:

src/core/Group.js line 523

Returns:

The child that was found at the given index, or -1 for an invalid index.

Type

DisplayObject | integer

getBottom()

Returns the child at the bottom of this group.

The bottom child the child being displayed (rendered) below every other child.

Inherited From:

• Phaser.Group#getBottom

Source:

src/core/Group.js line 2329

Returns:

The child at the bottom of the Group.

Type

any

getBounds( [targetCoordinateSpace])

Retrieves the global bounds of the displayObjectContainer as a rectangle. The bounds calculation takes all visible children into consideration.

Parameters:

Name	Type	Argument	Description
targetCoordinateSpace	PIXI.DisplayObject | Phaser.Matrix	<optional>	Returns a rectangle that defines the area of the display object relative to the coordinate system of the targetCoordinateSpace object.

Inherited From:

• PIXI.DisplayObjectContainer#getBounds

Source:

src/pixi/display/DisplayObjectContainer.js line 289

Returns:

The rectangular bounding area

Type

Rectangle

getByName(name)

Searches the Group for the first instance of a child with the name property matching the given argument. Should more than one child have the same name only the first instance is returned.

Parameters:

Name	Type	Description
name	string	The name to search for.

Inherited From:

• Phaser.Group#getByName

Source:

src/core/Group.js line 1041

Returns:

The first child with a matching name, or null if none were found.

Type

any

getChildAt(index)

Returns the child at the specified index

Parameters:

Name	Type	Description
index	Number	The index to get the child from

Inherited From:

• PIXI.DisplayObjectContainer#getChildAt

Source:

src/pixi/display/DisplayObjectContainer.js line 147

Returns:

The child at the given index, if any.

Type

DisplayObject

getChildIndex(child)

Returns the index position of a child DisplayObject instance

Parameters:

Name	Type	Description
child	DisplayObject	The DisplayObject instance to identify

Inherited From:

• PIXI.DisplayObjectContainer#getChildIndex

Source:

src/pixi/display/DisplayObjectContainer.js line 108

Returns:

The index position of the child display object to identify

Type

Number

getClosestTo(object [, callback] [, callbackContext])

Get the closest child to given Object, with optional callback to filter children.

This can be a Sprite, Group, Image or any object with public x and y properties.

'close' is determined by the distance from the objects x and y properties compared to the childs x and y properties.

You can use the optional callback argument to apply your own filter to the distance checks. If the child is closer then the previous child, it will be sent to callback as the first argument, with the distance as the second. The callback should return true if it passes your filtering criteria, otherwise it should return false.

Parameters:

Name	Type	Argument	Description
object	any		The object used to determine the distance. This can be a Sprite, Group, Image or any object with public x and y properties.
callback	function	<optional>	The function that each child will be evaluated against. Each child of the group will be passed to it as its first parameter, with the distance as the second. It should return true if the child passes the matching criteria.
callbackContext	object	<optional>	The context in which the function should be called (usually 'this').

Inherited From:

• Phaser.Group#getClosestTo

Source:

src/core/Group.js line 2345

Returns:

The child closest to given object, or null if no child was found.

Type

any

getFirst(key, value)

Get the first display object with the given property name and value.

Parameters:

Name	Type	Description
key	string	The child property to check.
value	string	A child matches if child[key] === value is true.

Inherited From:

• Phaser.Group#getFirst

Source:

src/core/Group.js line 2171

Returns:

The first child matching the query, or null if none were found.

Type

DisplayObject

getFirstAlive( [createIfNull] [, x] [, y] [, key] [, frame])

Get the first child that is alive (child.alive === true).

This is handy for choosing a squad leader, etc.

You can use the optional argument createIfNull to create a new Game Object if no alive ones were found in this Group.

It works by calling Group.create passing it the parameters given to this method, and returning the new child.

If a child was found , createIfNull is false and you provided the additional arguments then the child will be reset and/or have a new texture loaded on it. This is handled by Group.resetChild.

Parameters:

Name	Type	Argument	Default	Description
createIfNull	boolean	<optional>	false	If true and no alive children are found a new one is created.
x	number	<optional>		The x coordinate to reset the child to. The value is in relation to the group.x point.
y	number	<optional>		The y coordinate to reset the child to. The value is in relation to the group.y point.
key	string | Phaser.RenderTexture | Phaser.BitmapData | Phaser.Video | PIXI.Texture	<optional>		This is the image or texture used by the Sprite during rendering. It can be a string which is a reference to the Cache Image entry, or an instance of a RenderTexture, BitmapData, Video or PIXI.Texture.
frame	string | number	<optional>		If this Sprite is using part of a sprite sheet or texture atlas you can specify the exact frame to use by giving a string or numeric index.

Inherited From:

• Phaser.Group#getFirstAlive

Source:

src/core/Group.js line 2217

Returns:

The alive dead child, or null if none found and createIfNull was false.

Type

DisplayObject

getFirstDead( [createIfNull] [, x] [, y] [, key] [, frame])

Get the first child that is dead (child.alive === false).

This is handy for checking if everything has been wiped out and adding to the pool as needed.

You can use the optional argument createIfNull to create a new Game Object if no dead ones were found in this Group.

It works by calling Group.create passing it the parameters given to this method, and returning the new child.

If a child was found , createIfNull is false and you provided the additional arguments then the child will be reset and/or have a new texture loaded on it. This is handled by Group.resetChild.

Parameters:

Name	Type	Argument	Default	Description
createIfNull	boolean	<optional>	false	If true and no dead children are found a new one is created.
x	number	<optional>		The x coordinate to reset the child to. The value is in relation to the group.x point.
y	number	<optional>		The y coordinate to reset the child to. The value is in relation to the group.y point.
key	string | Phaser.RenderTexture | Phaser.BitmapData | Phaser.Video | PIXI.Texture	<optional>		This is the image or texture used by the Sprite during rendering. It can be a string which is a reference to the Cache Image entry, or an instance of a RenderTexture, BitmapData, Video or PIXI.Texture.
frame	string | number	<optional>		If this Sprite is using part of a sprite sheet or texture atlas you can specify the exact frame to use by giving a string or numeric index.

Inherited From:

• Phaser.Group#getFirstDead

Source:

src/core/Group.js line 2246

Returns:

The first dead child, or null if none found and createIfNull was false.

Type

DisplayObject

getFirstExists( [exists] [, createIfNull] [, x] [, y] [, key] [, frame])

Get the first display object that exists, or doesn't exist.

You can use the optional argument createIfNull to create a new Game Object if none matching your exists argument were found in this Group.

It works by calling Group.create passing it the parameters given to this method, and returning the new child.

If a child was found , createIfNull is false and you provided the additional arguments then the child will be reset and/or have a new texture loaded on it. This is handled by Group.resetChild.

Parameters:

Name	Type	Argument	Default	Description
exists	boolean	<optional>	true	If true, find the first existing child; otherwise find the first non-existing child.
createIfNull	boolean	<optional>	false	If true and no alive children are found a new one is created.
x	number	<optional>		The x coordinate to reset the child to. The value is in relation to the group.x point.
y	number	<optional>		The y coordinate to reset the child to. The value is in relation to the group.y point.
key	string | Phaser.RenderTexture | Phaser.BitmapData | Phaser.Video | PIXI.Texture	<optional>		This is the image or texture used by the Sprite during rendering. It can be a string which is a reference to the Cache Image entry, or an instance of a RenderTexture, BitmapData, Video or PIXI.Texture.
frame	string | number	<optional>		If this Sprite is using part of a sprite sheet or texture atlas you can specify the exact frame to use by giving a string or numeric index.

Inherited From:

• Phaser.Group#getFirstExists

Source:

src/core/Group.js line 2184

Returns:

The first child, or null if none found and createIfNull was false.

Type

DisplayObject

getFurthestFrom(object [, callback] [, callbackContext])

Get the child furthest away from the given Object, with optional callback to filter children.

This can be a Sprite, Group, Image or any object with public x and y properties.

'furthest away' is determined by the distance from the objects x and y properties compared to the childs x and y properties.

You can use the optional callback argument to apply your own filter to the distance checks. If the child is closer then the previous child, it will be sent to callback as the first argument, with the distance as the second. The callback should return true if it passes your filtering criteria, otherwise it should return false.

Parameters:

Name	Type	Argument	Description
object	any		The object used to determine the distance. This can be a Sprite, Group, Image or any object with public x and y properties.
callback	function	<optional>	The function that each child will be evaluated against. Each child of the group will be passed to it as its first parameter, with the distance as the second. It should return true if the child passes the matching criteria.
callbackContext	object	<optional>	The context in which the function should be called (usually 'this').

Inherited From:

• Phaser.Group#getFurthestFrom

Source:

src/core/Group.js line 2388

Returns:

The child furthest from the given object, or null if no child was found.

Type

any

getIndex(child)

Get the index position of the given child in this group, which should match the child's z property.

Parameters:

Name	Type	Description
child	any	The child to get the index for.

Inherited From:

• Phaser.Group#getIndex

Source:

src/core/Group.js line 1029

Returns:

The index of the child or -1 if it's not a member of this group.

Type

integer

getLocalBounds()

Retrieves the non-global local bounds of the displayObjectContainer as a rectangle without any transformations. The calculation takes all visible children into consideration.

Inherited From:

• PIXI.DisplayObjectContainer#getLocalBounds

Source:

src/pixi/display/DisplayObjectContainer.js line 445

Returns:

The rectangular bounding area

Type

Rectangle

getRandom( [startIndex] [, length])

Returns a random child from the group.

Parameters:

Name	Type	Argument	Default	Description
startIndex	integer	<optional>	0	Offset from the front of the group (lowest child).
length	integer	<optional>	(to top)	Restriction on the number of values you want to randomly select from.

Inherited From:

• Phaser.Group#getRandom

Source:

src/core/Group.js line 2466

Returns:

A random child of this Group.

Type

any

getRandomExists( [startIndex] [, endIndex])

Returns a random child from the Group that has exists set to true.

Optionally you can specify a start and end index. For example if this Group had 100 children, and you set startIndex to 0 and endIndex to 50, it would return a random child from only the first 50 children in the Group.

Parameters:

Name	Type	Argument	Default	Description
startIndex	integer	<optional>	0	The first child index to start the search from.
endIndex	integer	<optional>		The last child index to search up to.

Inherited From:

• Phaser.Group#getRandomExists

Source:

src/core/Group.js line 2487

Returns:

A random child of this Group that exists.

Type

any

getTop()

Return the child at the top of this group.

The top child is the child displayed (rendered) above every other child.

Inherited From:

• Phaser.Group#getTop

Source:

src/core/Group.js line 2313

Returns:

The child at the top of the Group.

Type

any

hasProperty(child, key)

Checks if the child has the given property.

Will scan up to 4 levels deep only.

Parameters:

Name	Type	Description
child	any	The child to check for the existence of the property on.
key	Array.<string>	An array of strings that make up the property.

Inherited From:

• Phaser.Group#hasProperty

Source:

src/core/Group.js line 1093

Returns:

True if the child has the property, otherwise false.

Type

boolean

iterate(key, value, returnType [, callback] [, callbackContext] [, args])

Iterates over the children of the group performing one of several actions for matched children.

A child is considered a match when it has a property, named key, whose value is equal to value according to a strict equality comparison.

The result depends on the returnType:

• RETURN_TOTAL: The callback, if any, is applied to all matching children. The number of matched children is returned.
• RETURN_NONE: The callback, if any, is applied to all matching children. No value is returned.
• RETURN_CHILD: The callback, if any, is applied to the first matching child and the first matched child is returned. If there is no matching child then null is returned.

If args is specified it must be an array. The matched child will be assigned to the first element and the entire array will be applied to the callback function.

Parameters:

Name	Type	Argument	Default	Description
key	string			The child property to check, i.e. 'exists', 'alive', 'health'
value	any			A child matches if child[key] === value is true.
returnType	integer			How to iterate the children and what to return.
callback	function	<optional>	null	Optional function that will be called on each matching child. The matched child is supplied as the first argument.
callbackContext	object	<optional>		The context in which the function should be called (usually 'this').
args	Array.<any>	<optional>	(none)	The arguments supplied to to the callback; the first array index (argument) will be replaced with the matched child.

Inherited From:

• Phaser.Group#iterate

Source:

src/core/Group.js line 2077

Returns:

Returns either an integer (for RETURN_TOTAL), the first matched child (for RETURN_CHILD), or null.

Type

any

kill()

Call this function to turn off all the particles and the emitter.

Overrides:

• Phaser.Group#kill

Source:

src/particles/arcade/Emitter.js line 449

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

killAll()

Kills all children having exists=true.

Inherited From:

• Phaser.Group#killAll

Source:

src/core/Group.js line 1493

makeParticles(keys [, frames] [, quantity] [, collide] [, collideWorldBounds] [, particleArguments])

This function generates a new set of particles for use by this emitter. The particles are stored internally waiting to be emitted via Emitter.start.

Parameters:

Name	Type	Argument	Default	Description
keys	array | string			A string or an array of strings that the particle sprites will use as their texture. If an array one is picked at random.
frames	array | number	<optional>	0	A frame number, or array of frames that the sprite will use. If an array one is picked at random.
quantity	number	<optional>		The number of particles to generate. If not given it will use the value of Emitter.maxParticles. If the value is greater than Emitter.maxParticles it will use Emitter.maxParticles as the quantity.
collide	boolean	<optional>	false	If you want the particles to be able to collide with other Arcade Physics bodies then set this to true.
collideWorldBounds	boolean	<optional>	false	A particle can be set to collide against the World bounds automatically and rebound back into the World if this is set to true. Otherwise it will leave the World.
particleArguments	object	<optional>	null	Custom arguments to pass to your particle class

Source:

src/particles/arcade/Emitter.js line 385

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

moveAll(group [, silent])

Moves all children from this Group to the Group given.

Parameters:

Name	Type	Argument	Default	Description
group	Phaser.Group			The new Group to which the children will be moved to.
silent	boolean	<optional>	false	If true the children will not dispatch the onAddedToGroup event for the new Group.

Inherited From:

• Phaser.Group#moveAll

Source:

src/core/Group.js line 2598

Returns:

The Group to which all the children were moved.

Type

Phaser.Group

moveDown(child)

Moves the given child down one place in this group unless it's already at the bottom.

Parameters:

Name	Type	Description
child	any	The child to move down in the group.

Inherited From:

• Phaser.Group#moveDown

Source:

src/core/Group.js line 972

Returns:

The child that was moved.

Type

any

moveUp(child)

Moves the given child up one place in this group unless it's already at the top.

Parameters:

Name	Type	Description
child	any	The child to move up in the group.

Inherited From:

• Phaser.Group#moveUp

Source:

src/core/Group.js line 949

Returns:

The child that was moved.

Type

any

multiplyAll(property, amount, checkAlive, checkVisible)

Multiplies the given property by the amount on all children in this group.

Group.multiplyAll('x', 2) will x2 the child.x value for each child.

Parameters:

Name	Type	Description
property	string	The property to multiply, for example 'body.velocity.x' or 'angle'.
amount	number	The amount to multiply the property by. If child.x = 10 then multiplyAll('x', 2) would make child.x = 20.
checkAlive	boolean	If true the property will only be changed if the child is alive.
checkVisible	boolean	If true the property will only be changed if the child is visible.

Inherited From:

• Phaser.Group#multiplyAll

Source:

src/core/Group.js line 1449

<protected> next()

Advances the cursor to the next particle.

Overrides:

• Phaser.Group#next

Source:

src/particles/arcade/Emitter.js line 1274

Returns:

The child the cursor now points to.

Type

any

<protected> postUpdate()

The core postUpdate - as called by World.

Inherited From:

• Phaser.Group#postUpdate

Source:

src/core/Group.js line 1763

<protected> preUpdate()

The core preUpdate - as called by World.

Inherited From:

• Phaser.Group#preUpdate

Source:

src/core/Group.js line 1695

<protected> previous()

Moves the group cursor to the previous particle.

Overrides:

• Phaser.Group#previous

Source:

src/particles/arcade/Emitter.js line 1283

Returns:

The child the cursor now points to.

Type

any

remove(child [, destroy] [, silent])

Removes the given child from this group.

This will dispatch an onRemovedFromGroup event from the child (if it has one), and optionally destroy the child.

If the group cursor was referring to the removed child it is updated to refer to the next child.

Parameters:

Name	Type	Argument	Default	Description
child	any			The child to remove.
destroy	boolean	<optional>	false	If true destroy will be invoked on the removed child.
silent	boolean	<optional>	false	If true the the child will not dispatch the onRemovedFromGroup event.

Inherited From:

• Phaser.Group#remove

Source:

src/core/Group.js line 2551

Returns:

true if the child was removed from this group, otherwise false.

Type

boolean

removeAll( [destroy] [, silent] [, destroyTexture])

Removes all children from this Group, but does not remove the group from its parent.

The children can be optionally destroyed as they are removed.

You can also optionally also destroy the BaseTexture the Child is using. Be careful if you've more than one Game Object sharing the same BaseTexture.

Parameters:

Name	Type	Argument	Default	Description
destroy	boolean	<optional>	false	If true destroy will be invoked on each removed child.
silent	boolean	<optional>	false	If true the children will not dispatch their onRemovedFromGroup events.
destroyTexture	boolean	<optional>	false	If true, and if the destroy argument is also true, the BaseTexture belonging to the Child is also destroyed. Note that if another Game Object is sharing the same BaseTexture it will invalidate it.

Inherited From:

• Phaser.Group#removeAll

Source:

src/core/Group.js line 2626

removeBetween(startIndex [, endIndex] [, destroy] [, silent])

Removes all children from this group whose index falls beteen the given startIndex and endIndex values.

Parameters:

Name	Type	Argument	Default	Description
startIndex	integer			The index to start removing children from.
endIndex	integer	<optional>		The index to stop removing children at. Must be higher than startIndex. If undefined this method will remove all children between startIndex and the end of the group.
destroy	boolean	<optional>	false	If true destroy will be invoked on each removed child.
silent	boolean	<optional>	false	If true the children will not dispatch their onRemovedFromGroup events.

Inherited From:

• Phaser.Group#removeBetween

Source:

src/core/Group.js line 2673

removeChild(child)

Removes a child from the container.

Parameters:

Name	Type	Description
child	DisplayObject	The DisplayObject to remove

Inherited From:

• PIXI.DisplayObjectContainer#removeChild

Source:

src/pixi/display/DisplayObjectContainer.js line 164

Returns:

The child that was removed.

Type

DisplayObject

removeChildAt(index)

Removes a child from the specified index position.

Parameters:

Name	Type	Description
index	Number	The index to get the child from

Inherited From:

• PIXI.DisplayObjectContainer#removeChildAt

Source:

src/pixi/display/DisplayObjectContainer.js line 183

Returns:

The child that was removed.

Type

DisplayObject

removeChildren(beginIndex, endIndex)

Removes all children from this container that are within the begin and end indexes.

Parameters:

Name	Type	Description
beginIndex	Number	The beginning position. Default value is 0.
endIndex	Number	The ending position. Default value is size of the container.

Inherited From:

• PIXI.DisplayObjectContainer#removeChildren

Source:

src/pixi/display/DisplayObjectContainer.js line 224

removeFromHash(child)

Removes a child of this Group from the hash array. This call will return false if the child is not in the hash.

Parameters:

Name	Type	Description
child	DisplayObject	The display object to remove from this Groups hash. Must be a member of this Group and in the hash.

Inherited From:

• Phaser.Group#removeFromHash

Source:

src/core/Group.js line 465

Returns:

True if the child was successfully removed from the hash, otherwise false.

Type

boolean

replace(oldChild, newChild)

Replaces a child of this Group with the given newChild. The newChild cannot be a member of this Group.

If Group.enableBody is set, then a physics body will be created on the object, so long as one does not already exist.

If Group.inputEnableChildren is set, then an Input Handler will be created on the object, so long as one does not already exist.

Parameters:

Name	Type	Description
oldChild	any	The child in this group that will be replaced.
newChild	any	The child to be inserted into this group.

Inherited From:

• Phaser.Group#replace

Source:

src/core/Group.js line 1055

Returns:

Returns the oldChild that was replaced within this group.

Type

any

resetAll( [x] [, y] [, key] [, frame] [, checkExists])

Calls resetChild on each child (or each existing child).

Parameters:

Name	Type	Argument	Default	Description
x	number	<optional>		The x coordinate to reset each child to. The value is in relation to the group.x point.
y	number	<optional>		The y coordinate to reset each child to. The value is in relation to the group.y point.
key	string | Phaser.RenderTexture | Phaser.BitmapData | Phaser.Video | PIXI.Texture	<optional>		The image or texture used by the Sprite during rendering.
frame	string | number	<optional>		The frame of a sprite sheet or texture atlas.
checkExists	boolean	<optional>	false	Reset only existing children.

Inherited From:

• Phaser.Group#resetAll

Source:

src/core/Group.js line 1525

resetChild(child [, x] [, y] [, key] [, frame])

Takes a child and if the x and y arguments are given it calls child.reset(x, y) on it.

If the key and optionally the frame arguments are given, it calls child.loadTexture(key, frame) on it.

The two operations are separate. For example if you just wish to load a new texture then pass null as the x and y values.

Parameters:

Name	Type	Argument	Description
child	DisplayObject		The child to reset and/or load the texture on.
x	number	<optional>	The x coordinate to reset the child to. The value is in relation to the group.x point.
y	number	<optional>	The y coordinate to reset the child to. The value is in relation to the group.y point.
key	string | Phaser.RenderTexture | Phaser.BitmapData | Phaser.Video | PIXI.Texture	<optional>	This is the image or texture used by the Sprite during rendering. It can be a string which is a reference to the Cache Image entry, or an instance of a RenderTexture, BitmapData, Video or PIXI.Texture.
frame	string | number	<optional>	If this Sprite is using part of a sprite sheet or texture atlas you can specify the exact frame to use by giving a string or numeric index.

Inherited From:

• Phaser.Group#resetChild

Source:

src/core/Group.js line 2275

Returns:

The child that was reset: usually a Phaser.Sprite.

Type

DisplayObject

resetCursor( [index])

Sets the group cursor to the first child in the group.

If the optional index parameter is given it sets the cursor to the object at that index instead.

Parameters:

Name	Type	Argument	Default	Description
index	integer	<optional>	0	Set the cursor to point to a specific index.

Inherited From:

• Phaser.Group#resetCursor

Source:

src/core/Group.js line 804

Returns:

The child the cursor now points to.

Type

any

reverse()

Reverses all children in this group.

This operation applies only to immediate children and does not propagate to subgroups.

Inherited From:

• Phaser.Group#reverse

Source:

src/core/Group.js line 1016

revive()

Handy for bringing game objects "back to life". Just sets alive and exists back to true.

Overrides:

• Phaser.Group#revive

Source:

src/particles/arcade/Emitter.js line 464

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

reviveAll()

Revives all children having exists=false.

Inherited From:

• Phaser.Group#reviveAll

Source:

src/core/Group.js line 1515

scatter( [rect] [, checkExists])

Places each child at a random position within the given Rectangle (or the World bounds).

Parameters:

Name	Type	Argument	Default	Description
rect	Phaser.Rectangle	<optional>	this.game.world.bounds	A Rectangle. If omitted Phaser.World#bounds is used.
checkExists	boolean	<optional>	false	Place only children with exists=true.

Inherited From:

• Phaser.Group#scatter

Source:

src/core/Group.js line 2727

sendToBack(child)

Sends the given child to the bottom of this group so it renders below all other children.

Parameters:

Name	Type	Description
child	any	The child to send to the bottom of this group.

Inherited From:

• Phaser.Group#sendToBack

Source:

src/core/Group.js line 925

Returns:

The child that was moved.

Type

any

set(child, key, value [, checkAlive] [, checkVisible] [, operation] [, force])

Quickly set a property on a single child of this group to a new value.

The operation parameter controls how the new value is assigned to the property, from simple replacement to addition and multiplication.

Parameters:

Name	Type	Argument	Default	Description
child	Phaser.Sprite			The child to set the property on.
key	string			The property, as a string, to be set. For example: 'body.velocity.x'
value	any			The value that will be set.
checkAlive	boolean	<optional>	false	If set then the child will only be updated if alive=true.
checkVisible	boolean	<optional>	false	If set then the child will only be updated if visible=true.
operation	integer	<optional>	0	Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.
force	boolean	<optional>	false	If force is true then the property will be set on the child regardless if it already exists or not. If false and the property doesn't exist, nothing will be set.

Inherited From:

• Phaser.Group#set

Source:

src/core/Group.js line 1237

Returns:

True if the property was set, false if not.

Type

boolean

setAll(key, value [, checkAlive] [, checkVisible] [, operation] [, force])

Quickly set the same property across all children of this group to a new value.

This call doesn't descend down children, so if you have a Group inside of this group, the property will be set on the group but not its children. If you need that ability please see Group.setAllChildren.

The operation parameter controls how the new value is assigned to the property, from simple replacement to addition and multiplication.

Parameters:

Name	Type	Argument	Default	Description
key	string			The property, as a string, to be set. For example: 'body.velocity.x'
value	any			The value that will be set.
checkAlive	boolean	<optional>	false	If set then only children with alive=true will be updated. This includes any Groups that are children.
checkVisible	boolean	<optional>	false	If set then only children with visible=true will be updated. This includes any Groups that are children.
operation	integer	<optional>	0	Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.
force	boolean	<optional>	false	If force is true then the property will be set on the child regardless if it already exists or not. If false and the property doesn't exist, nothing will be set.

Inherited From:

• Phaser.Group#setAll

Source:

src/core/Group.js line 1267

setAllChildren(key, value [, checkAlive] [, checkVisible] [, operation] [, force])

Quickly set the same property across all children of this group, and any child Groups, to a new value.

If this group contains other Groups then the same property is set across their children as well, iterating down until it reaches the bottom. Unlike with setAll the property is NOT set on child Groups itself.

The operation parameter controls how the new value is assigned to the property, from simple replacement to addition and multiplication.

Parameters:

Name	Type	Argument	Default	Description
key	string			The property, as a string, to be set. For example: 'body.velocity.x'
value	any			The value that will be set.
checkAlive	boolean	<optional>	false	If set then only children with alive=true will be updated. This includes any Groups that are children.
checkVisible	boolean	<optional>	false	If set then only children with visible=true will be updated. This includes any Groups that are children.
operation	integer	<optional>	0	Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.
force	boolean	<optional>	false	If force is true then the property will be set on the child regardless if it already exists or not. If false and the property doesn't exist, nothing will be set.

Inherited From:

• Phaser.Group#setAllChildren

Source:

src/core/Group.js line 1305

setAlpha( [min] [, max] [, rate] [, ease] [, yoyo])

A more compact way of setting the alpha constraints of the particles. The rate parameter, if set to a value above zero, lets you set the speed at which the Particle change in alpha from min to max. If rate is zero, which is the default, the particle won't change alpha - instead it will pick a random alpha between min and max on emit.

Parameters:

Name	Type	Argument	Default	Description
min	number	<optional>	1	The minimum value for this range.
max	number	<optional>	1	The maximum value for this range.
rate	number	<optional>	0	The rate (in ms) at which the particles will change in alpha from min to max, or set to zero to pick a random alpha between the two.
ease	function	<optional>	Phaser.Easing.Linear.None	If you've set a rate > 0 this is the easing formula applied between the min and max values.
yoyo	boolean	<optional>	false	If you've set a rate > 0 you can set if the ease will yoyo or not (i.e. ease back to its original values)

Source:

src/particles/arcade/Emitter.js line 897

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

setAngle(minAngle, maxAngle [, minSpeed] [, maxSpeed])

Sets a radial pattern for emitting particles.

This is a shorthand for setting minAngle, maxAngle, minSpeed, and maxSpeed.

To remove the radial pattern, use setAngle(null, null).

Parameters:

Name	Type	Argument	Description
minAngle	number	<nullable>	The minimum angle of initial particle velocities, in degrees.
maxAngle	number	<nullable>	The maximum angle of initial particle velocities, in degrees.
minSpeed	number	<optional>	The minimum initial particle speed.
maxSpeed	number	<optional>	The maximum initial particle speed.

Source:

src/particles/arcade/Emitter.js line 990

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

setChildIndex(child, index)

Changes the position of an existing child in the display object container

Parameters:

Name	Type	Description
child	DisplayObject	The child DisplayObject instance for which you want to change the index number
index	Number	The resulting index number for the child display object

Inherited From:

• PIXI.DisplayObjectContainer#setChildIndex

Source:

src/pixi/display/DisplayObjectContainer.js line 127

setGravity( [x] [, y])

Sets gravity for emitted particles.

Parameters:

Name	Type	Argument	Default	Description
x	number	<optional>	0	The horizontal gravity component.
y	number	<optional>	0	The vertical gravity component.

Source:

src/particles/arcade/Emitter.js line 1015

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

setProperty(child, key, value [, operation] [, force])

Sets a property to the given value on the child. The operation parameter controls how the value is set.

The operations are:

• 0: set the existing value to the given value; if force is true a new property will be created if needed
• 1: will add the given value to the value already present.
• 2: will subtract the given value from the value already present.
• 3: will multiply the value already present by the given value.
• 4: will divide the value already present by the given value.

Parameters:

Name	Type	Argument	Default	Description
child	any			The child to set the property value on.
key	array			An array of strings that make up the property that will be set.
value	any			The value that will be set.
operation	integer	<optional>	0	Controls how the value is assigned. A value of 0 replaces the value with the new one. A value of 1 adds it, 2 subtracts it, 3 multiplies it and 4 divides it.
force	boolean	<optional>	false	If force is true then the property will be set on the child regardless if it already exists or not. If false and the property doesn't exist, nothing will be set.

Inherited From:

• Phaser.Group#setProperty

Source:

src/core/Group.js line 1127

Returns:

True if the property was set, false if not.

Type

boolean

setRotation( [min] [, max])

A more compact way of setting the angular velocity constraints of the particles.

Parameters:

Name	Type	Argument	Default	Description
min	number	<optional>	0	The minimum value for this range.
max	number	<optional>	0	The maximum value for this range.

Source:

src/particles/arcade/Emitter.js line 878

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

setScale( [minX] [, maxX] [, minY] [, maxY] [, rate] [, ease] [, yoyo])

A more compact way of setting the scale constraints of the particles. The rate parameter, if set to a value above zero, lets you set the speed and ease which the Particle uses to change in scale from min to max across both axis. If rate is zero, which is the default, the particle won't change scale during update, instead it will pick a random scale between min and max on emit.

Parameters:

Name	Type	Argument	Default	Description
minX	number	<optional>	1	The minimum value of Particle.scale.x.
maxX	number	<optional>	1	The maximum value of Particle.scale.x.
minY	number	<optional>	1	The minimum value of Particle.scale.y.
maxY	number	<optional>	1	The maximum value of Particle.scale.y.
rate	number	<optional>	0	The rate (in ms) at which the particles will change in scale from min to max, or set to zero to pick a random size between the two.
ease	function	<optional>	Phaser.Easing.Linear.None	If you've set a rate > 0 this is the easing formula applied between the min and max values.
yoyo	boolean	<optional>	false	If you've set a rate > 0 you can set if the ease will yoyo or not (i.e. ease back to its original values)

Source:

src/particles/arcade/Emitter.js line 939

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

setSize(width, height)

A more compact way of setting the width and height of the emitter.

Parameters:

Name	Type	Description
width	number	The desired width of the emitter (particles are spawned randomly within these dimensions).
height	number	The desired height of the emitter.

Source:

src/particles/arcade/Emitter.js line 806

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

setSpeed(minX, maxX, minY, maxY)

A more compact way of setting the X and Y velocity ranges of the emitter.

Parameters:

Name	Type	Description
minX	number	The minimum horizontal speed.
maxX	number	The maximum horizontal speed.
minY	number	The minimum vertical speed.
maxY	number	The maximum vertical speed.

Source:

src/particles/arcade/Emitter.js line 822

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

setXSpeed( [min] [, max])

A more compact way of setting the X velocity range of the emitter.

Parameters:

Name	Type	Argument	Default	Description
min	number	<optional>	0	The minimum value for this range.
max	number	<optional>	0	The maximum value for this range.

Source:

src/particles/arcade/Emitter.js line 840

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

setYSpeed( [min] [, max])

A more compact way of setting the Y velocity range of the emitter.

Parameters:

Name	Type	Argument	Default	Description
min	number	<optional>	0	The minimum value for this range.
max	number	<optional>	0	The maximum value for this range.

Source:

src/particles/arcade/Emitter.js line 859

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

shuffle()

Orders this Group's children randomly.

This can be more efficient than calling getRandom repeatedly.

Inherited From:

• Phaser.Group#shuffle

Source:

src/core/Group.js line 2744

sort( [key] [, order])

Sort the children in the group according to a particular key and ordering.

Call this function to sort the group according to a particular key value and order.

For example to depth sort Sprites for Zelda-style game you might call group.sort('y', Phaser.Group.SORT_ASCENDING) at the bottom of your State.update().

Internally this uses a standard JavaScript Array sort, so everything that applies there also applies here, including alphabetical sorting, mixing strings and numbers, and Unicode sorting. See MDN for more details.

Parameters:

Name	Type	Argument	Default	Description
key	string	<optional>	'z'	The name of the property to sort on. Defaults to the objects z-depth value.
order	integer	<optional>	Phaser.Group.SORT_ASCENDING	Order ascending (SORT_ASCENDING) or descending (SORT_DESCENDING).

Inherited From:

• Phaser.Group#sort

Source:

src/core/Group.js line 1962

start( [explode] [, lifespan] [, frequency] [, total] [, forceQuantity])

Start emitting particles.

explode and flow are simpler methods.

There are two patterns, based on the explode argument:

explode=true

start(true, lifespan=0, null, total)

When explode is true or forceQuantity is true, start emits total particles immediately. You should pass a nonzero total.

explode=false

start(false, lifespan=0, frequency=250, total=0)

When explode is false and forceQuantity is false, start emits 1 particle every interval of frequency ms. If total is not zero, the emitter turns itself off after total particles have been released. If total is zero, the emitter keeps emitting particles as long as they are available. To emit more than 1 particle per flow interval, use flow instead.

forceQuantity seems equivalent to explode and can probably be avoided.

Parameters:

Name	Type	Argument	Default	Description
explode	boolean	<optional>	true	Whether the particles should all burst out at once (true) or at the frequency given (false).
lifespan	number	<optional>	0	How long each particle lives once emitted in ms. 0 = forever.
frequency	number	<optional>	250	The interval between each release of 1 particle, when explode is false. Value given in ms. Ignored if explode is set to true.
total	number	<optional>	0	Turn off after launching this many particles in total.
forceQuantity	number	<optional>	false	Equivalent to explodes.

Source:

src/particles/arcade/Emitter.js line 550

Returns:

This Emitter instance.

Type

Phaser.Particles.Arcade.Emitter

subAll(property, amount, checkAlive, checkVisible)

Subtracts the amount from the given property on all children in this group.

Group.subAll('x', 10) will minus 10 from the child.x value for each child.

Parameters:

Name	Type	Description
property	string	The property to decrement, for example 'body.velocity.x' or 'angle'.
amount	number	The amount to subtract from the property. If child.x = 50 then subAll('x', 40) would make child.x = 10.
checkAlive	boolean	If true the property will only be changed if the child is alive.
checkVisible	boolean	If true the property will only be changed if the child is visible.

Inherited From:

• Phaser.Group#subAll

Source:

src/core/Group.js line 1433

swap(child1, child2)

Swaps the position of two children in this group.

Both children must be in this group, a child cannot be swapped with itself, and unparented children cannot be swapped.

Parameters:

Name	Type	Description
child1	any	The first child to swap.
child2	any	The second child to swap.

Inherited From:

• Phaser.Group#swap

Source:

src/core/Group.js line 886

swapChildren(child, child2)

Swaps the position of 2 Display Objects within this container.

Parameters:

Name	Type	Description
child	DisplayObject
child2	DisplayObject

Inherited From:

• PIXI.DisplayObjectContainer#swapChildren

Source:

src/pixi/display/DisplayObjectContainer.js line 82

toGlobal(position)

Calculates the global position of this DisplayObject, based on the position given.

Parameters:

Name	Type	Description
position	PIXI.Point	The global position to calculate from.

Inherited From:

• PIXI.DisplayObject#toGlobal

Source:

src/pixi/display/DisplayObject.js line 483

Returns:

• A point object representing the position of this DisplayObject based on the global position given.

Type

PIXI.Point

toLocal(position [, from])

Calculates the local position of this DisplayObject, relative to another point.

Parameters:

Name	Type	Argument	Description
position	PIXI.Point		The world origin to calculate from.
from	PIXI.DisplayObject	<optional>	An optional DisplayObject to calculate the global position from.

Inherited From:

• PIXI.DisplayObject#toLocal

Source:

src/pixi/display/DisplayObject.js line 497

Returns:

• A point object representing the position of this DisplayObject based on the global position given.

Type

PIXI.Point

update()

Called automatically by the game loop, decides when to launch particles and when to "die".

Overrides:

• Phaser.Group#update

Source:

src/particles/arcade/Emitter.js line 319

updateCache()

If this DisplayObject has a cached Sprite, this method generates and updates it.

Inherited From:

• PIXI.DisplayObject#updateCache

Source:

src/pixi/display/DisplayObject.js line 470

Returns:

• A reference to this DisplayObject.

Type

PIXI.DisplayObject

updateTransform( [parent])

Updates the transform matrix this DisplayObject uses for rendering.

If the object has no parent, and no parent parameter is provided, it will default to Phaser.Game.World as the parent transform to use. If that is unavailable the transform fails to take place.

The parent parameter has priority over the actual parent. Use it as a parent override. Setting it does not change the actual parent of this DisplayObject.

Calling this method updates the worldTransform, worldAlpha, worldPosition, worldScale and worldRotation properties.

If a transformCallback has been specified, it is called at the end of this method, and is passed the new, updated, worldTransform property, along with the parent transform used.

Parameters:

Name	Type	Argument	Description
parent	PIXI.DisplayObjectContainer	<optional>	Optional parent to calculate this DisplayObjects transform from.

Inherited From:

• PIXI.DisplayObject#updateTransform

Source:

src/pixi/display/DisplayObject.js line 291

Returns:

• A reference to this DisplayObject.

Type

PIXI.DisplayObject

<protected> updateZ()

Internal method that re-applies all of the children's Z values.

This must be called whenever children ordering is altered so that their z indices are correctly updated.

Inherited From:

• Phaser.Group#updateZ

Source:

src/core/Group.js line 663

xy(index, x, y)

Positions the child found at the given index within this group to the given x and y coordinates.

Parameters:

Name	Type	Description
index	integer	The index of the child in the group to set the position of.
x	number	The new x position of the child.
y	number	The new y position of the child.

Inherited From:

• Phaser.Group#xy

Source:

src/core/Group.js line 995