The Loader handles loading all external content such as Images, Sounds, Texture Atlases and data files. You typically interact with it via this.load in your Scene. Scenes can have a preload method, which is always called before the Scenes create method, allowing you to preload assets that the Scene may need.

If you call any this.load methods from outside of Scene.preload then you need to start the Loader going yourself by calling Loader.start(). It's only automatically started during the Scene preload.

The Loader uses a combination of tag loading (eg. Audio elements) and XHR and provides progress and completion events. Files are loaded in parallel by default. The amount of concurrent connections can be controlled in your Game Configuration.

Once the Loader has started loading you are still able to add files to it. These can be injected as a result of a loader event, the type of file being loaded (such as a pack file) or other external events. As long as the Loader hasn't finished simply adding a new file to it, while running, will ensure it's added into the current queue.

Every Scene has its own instance of the Loader and they are bound to the Scene in which they are created. However, assets loaded by the Loader are placed into global game-level caches. For example, loading an XML file will place that file inside Game.cache.xml, which is accessible from every Scene in your game, no matter who was responsible for loading it. The same is true of Textures. A texture loaded in one Scene is instantly available to all other Scenes in your game.

The Loader works by using custom File Types. These are stored in the FileTypesManager, which injects them into the Loader when it's instantiated. You can create your own custom file types by extending either the File or MultiFile classes. See those files for more details.

Constructor

new LoaderPlugin(scene)

Parameters

name	type	optional	description
scene	Phaser.Scene	No	The Scene which owns this Loader instance.

Scope: static

Extends

Phaser.Events.EventEmitter

Source: src/loader/LoaderPlugin.js#L20
Since: 3.0.0

Public Methods

addFile

<instance> addFile(file)

Description:

Adds a file, or array of files, into the load queue.

The file must be an instance of Phaser.Loader.File, or a class that extends it. The Loader will check that the key used by the file won't conflict with any other key either in the loader, the inflight queue or the target cache. If allowed it will then add the file into the pending list, read for the load to start. Or, if the load has already started, ready for the next batch of files to be pulled from the list to the inflight queue.

You should not normally call this method directly, but rather use one of the Loader methods like image or atlas, however you can call this as long as the file given to it is well formed.

Parameters:

name	type	optional	description
file	Phaser.Loader.File \| Array.<Phaser.Loader.File>	No	The file, or array of files, to be added to the load queue.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/LoaderPlugin.js#L516
Since: 3.0.0

addListener

<instance> addListener(event, fn, [context])

Description:

Add a listener for a given event.

Parameters:

name	type	optional	default	description
event	string \| symbol	No		The event name.
fn	function	No		The listener function.
context	*	Yes	"this"	The context to invoke the listener with.

Returns: Phaser.Loader.LoaderPlugin - this.

Inherits: Phaser.Events.EventEmitter#addListener

Source: src/events/EventEmitter.js#L111
Since: 3.0.0

addPack

<instance> addPack(pack, [packKey])

Description:

Takes a well formed, fully parsed pack file object and adds its entries into the load queue. Usually you do not call this method directly, but instead use Loader.pack and supply a path to a JSON file that holds the pack data. However, if you've got the data prepared you can pass it to this method.

You can also provide an optional key. If you do then it will only add the entries from that part of the pack into to the load queue. If not specified it will add all entries it finds. For more details about the pack file format see the LoaderPlugin.pack method.

Parameters:

name	type	optional	description
pack	any	No	The Pack File data to be parsed and each entry of it to added to the load queue.
packKey	string	Yes	An optional key to use from the pack file data.

Returns: boolean - true if any files were added to the queue, otherwise false.

Source: src/loader/LoaderPlugin.js#L618
Since: 3.7.0

animation

<instance> animation(key, [url], [dataKey], [xhrSettings])

Description:

Adds an Animation JSON Data file, or array of Animation JSON files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.animation('baddieAnims', 'files/BaddieAnims.json');
}

The file is not loaded right away. It is added to a queue ready to be loaded either when the loader starts, or if it's already running, when the next free load slot becomes available. This happens automatically if you are calling this from within the Scene's preload method, or a related callback. Because the file is queued it means you cannot use the file immediately after calling this method, but must wait for the file to complete. The typical flow for a Phaser Scene is that you load assets in the Scene's preload method and then when the Scene's create method is called you are guaranteed that all of those assets are ready for use and have been loaded.

If you call this from outside of preload then you are responsible for starting the Loader afterwards and monitoring its events to know when it's safe to use the asset. Please see the Phaser.Loader.LoaderPlugin class for more details.

The key must be a unique String. It is used to add the file to the global JSON Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the JSON Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the JSON Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.animation({
    key: 'baddieAnims',
    url: 'files/BaddieAnims.json'
});

See the documentation for Phaser.Types.Loader.FileTypes.JSONFileConfig for more details.

Once the file has finished loading it will automatically be passed to the global Animation Managers fromJSON method. This will parse all of the JSON data and create animation data from it. This process happens at the very end of the Loader, once every other file in the load queue has finished. The reason for this is to allow you to load both animation data and the images it relies upon in the same load call.

Once the animation data has been parsed you will be able to play animations using that data. Please see the Animation Manager fromJSON method for more details about the format and playback.

You can also access the raw animation data from its Cache using its key:

this.load.animation('baddieAnims', 'files/BaddieAnims.json');
// and later in your game ...
var data = this.cache.json.get('baddieAnims');

If you have specified a prefix in the loader, via Loader.setPrefix then this value will be prepended to this files key. For example, if the prefix was LEVEL1. and the key was Waves the final key will be LEVEL1.Waves and this is what you would use to retrieve the text from the JSON Cache.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "data" and no URL is given then the Loader will set the URL to be "data.json". It will always add .json as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

You can also optionally provide a dataKey to use. This allows you to extract only a part of the JSON and store it in the Cache, rather than the whole file. For example, if your JSON data had a structure like this:

{
    "level1": {
        "baddies": {
            "aliens": {},
            "boss": {}
        }
    },
    "level2": {},
    "level3": {}
}

And if you only wanted to create animations from the boss data, then you could pass level1.baddies.bossas the dataKey.

Note: The ability to load this type of file will only be available if the JSON File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.JSONFileConfig	Array.<Phaser.Types.Loader.FileTypes.JSONFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json".
dataKey	string	Yes	When the Animation JSON file loads only this property will be stored in the Cache and used to create animation data.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/AnimationJSONFile.js#L77
Since: 3.0.0

aseprite

<instance> aseprite(key, [textureURL], [atlasURL], [textureXhrSettings], [atlasXhrSettings])

Description:

Aseprite is a powerful animated sprite editor and pixel art tool.

You can find more details at https://www.aseprite.org/

Adds a JSON based Aseprite Animation, or array of animations, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.aseprite('gladiator', 'images/Gladiator.png', 'images/Gladiator.json');
}

To export a compatible JSON file in Aseprite, please do the following:

Go to "File - Export Sprite Sheet"
On the Layout tab: 2a. Set the "Sheet type" to "Packed" 2b. Set the "Constraints" to "None" 2c. Check the "Merge Duplicates" checkbox
On the Sprite tab: 3a. Set "Layers" to "Visible layers" 3b. Set "Frames" to "All frames", unless you only wish to export a sub-set of tags
On the Borders tab: 4a. Check the "Trim Sprite" and "Trim Cells" options 4b. Ensure "Border Padding", "Spacing" and "Inner Padding" are all > 0 (1 is usually enough)
On the Output tab: 5a. Check "Output File", give your image a name and make sure you choose "png files" as the file type 5b. Check "JSON Data" and give your json file a name 5c. The JSON Data type can be either a Hash or Array, Phaser doesn't mind. 5d. Make sure "Tags" is checked in the Meta options 5e. In the "Item Filename" input box, make sure it says just "{frame}" and nothing more.
Click export

This was tested with Aseprite 1.2.25.

This will export a png and json file which you can load using the Aseprite Loader, i.e.:

Phaser can load all common image types: png, jpg, gif and any other format the browser can natively handle.

The key must be a unique String. It is used to add the file to the global Texture Manager upon a successful load. The key should be unique both in terms of files being loaded and files already present in the Texture Manager. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the Texture Manager first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.aseprite({
    key: 'gladiator',
    textureURL: 'images/Gladiator.png',
    atlasURL: 'images/Gladiator.json'
});

See the documentation for Phaser.Types.Loader.FileTypes.AsepriteFileConfig for more details.

Instead of passing a URL for the JSON data you can also pass in a well formed JSON object instead.

Once loaded, you can call this method from within a Scene with the 'atlas' key:

this.anims.createFromAseprite('paladin');

Any animations defined in the JSON will now be available to use in Phaser and you play them via their Tag name. For example, if you have an animation called 'War Cry' on your Aseprite timeline, you can play it in Phaser using that Tag name:

this.add.sprite(400, 300).play('War Cry');

When calling this method you can optionally provide an array of tag names, and only those animations will be created. For example:

this.anims.createFromAseprite('paladin', [ 'step', 'War Cry', 'Magnum Break' ]);

This will only create the 3 animations defined. Note that the tag names are case-sensitive.

If you have specified a prefix in the loader, via Loader.setPrefix then this value will be prepended to this files key. For example, if the prefix was MENU. and the key was Background the final key will be MENU.Background and this is what you would use to retrieve the image from the Texture Manager.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "alien" and no URL is given then the Loader will set the URL to be "alien.png". It will always add .png as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Aseprite File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.AsepriteFileConfig	Array.<Phaser.Types.Loader.FileTypes.AsepriteFileConfig>	No
textureURL	string \| Array.<string>	Yes	The absolute or relative URL to load the texture image file from. If undefined or `null` it will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png".
atlasURL	object \| string	Yes	The absolute or relative URL to load the texture atlas json data file from. If undefined or `null` it will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json". Or, a well formed JSON object.
textureXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas image file. Used in replacement of the Loaders default XHR Settings.
atlasXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas json file. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/AsepriteFile.js#L111
Since: 3.50.0

atlas

<instance> atlas(key, [textureURL], [atlasURL], [textureXhrSettings], [atlasXhrSettings])

Description:

Adds a JSON based Texture Atlas, or array of atlases, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.atlas('mainmenu', 'images/MainMenu.png', 'images/MainMenu.json');
}

Phaser expects the atlas data to be provided in a JSON file, using either the JSON Hash or JSON Array format.

These files are created by software such as:

If you are using Texture Packer and have enabled multi-atlas support, then please use the Phaser Multi Atlas loader instead of this one.

Phaser can load all common image types: png, jpg, gif and any other format the browser can natively handle.

Instead of passing arguments you can pass a configuration object, such as:

this.load.atlas({
    key: 'mainmenu',
    textureURL: 'images/MainMenu.png',
    atlasURL: 'images/MainMenu.json'
});

See the documentation for Phaser.Types.Loader.FileTypes.AtlasJSONFileConfig for more details.

Instead of passing a URL for the atlas JSON data you can also pass in a well formed JSON object instead.

Once the atlas has finished loading you can use frames from it as textures for a Game Object by referencing its key:

this.load.atlas('mainmenu', 'images/MainMenu.png', 'images/MainMenu.json');
// and later in your game ...
this.add.image(x, y, 'mainmenu', 'background');

To get a list of all available frames within an atlas please consult your Texture Atlas software.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

Phaser also supports the automatic loading of associated normal maps. If you have a normal map to go with this image, then you can specify it by providing an array as the url where the second element is the normal map:

this.load.atlas('mainmenu', [ 'images/MainMenu.png', 'images/MainMenu-n.png' ], 'images/MainMenu.json');

Or, if you are using a config object use the normalMap property:

this.load.atlas({
    key: 'mainmenu',
    textureURL: 'images/MainMenu.png',
    normalMap: 'images/MainMenu-n.png',
    atlasURL: 'images/MainMenu.json'
});

The normal map file is subject to the same conditions as the image file with regard to the path, baseURL, CORs and XHR Settings. Normal maps are a WebGL only feature.

Note: The ability to load this type of file will only be available if the Atlas JSON File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.AtlasJSONFileConfig	Array.<Phaser.Types.Loader.FileTypes.AtlasJSONFileConfig>	No
textureURL	string \| Array.<string>	Yes	The absolute or relative URL to load the texture image file from. If undefined or `null` it will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png".
atlasURL	object \| string	Yes	The absolute or relative URL to load the texture atlas json data file from. If undefined or `null` it will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json". Or, a well formed JSON object.
textureXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas image file. Used in replacement of the Loaders default XHR Settings.
atlasXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas json file. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/AtlasJSONFile.js#L109
Since: 3.0.0

atlasXML

<instance> atlasXML(key, [textureURL], [atlasURL], [textureXhrSettings], [atlasXhrSettings])

Description:

Adds an XML based Texture Atlas, or array of atlases, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.atlasXML('mainmenu', 'images/MainMenu.png', 'images/MainMenu.xml');
}

Phaser expects the atlas data to be provided in an XML file format. These files are created by software such as Shoebox and Adobe Flash / Animate.

Phaser can load all common image types: png, jpg, gif and any other format the browser can natively handle.

Instead of passing arguments you can pass a configuration object, such as:

this.load.atlasXML({
    key: 'mainmenu',
    textureURL: 'images/MainMenu.png',
    atlasURL: 'images/MainMenu.xml'
});

See the documentation for Phaser.Types.Loader.FileTypes.AtlasXMLFileConfig for more details.

Once the atlas has finished loading you can use frames from it as textures for a Game Object by referencing its key:

this.load.atlasXML('mainmenu', 'images/MainMenu.png', 'images/MainMenu.xml');
// and later in your game ...
this.add.image(x, y, 'mainmenu', 'background');

To get a list of all available frames within an atlas please consult your Texture Atlas software.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

this.load.atlasXML('mainmenu', [ 'images/MainMenu.png', 'images/MainMenu-n.png' ], 'images/MainMenu.xml');

Or, if you are using a config object use the normalMap property:

this.load.atlasXML({
    key: 'mainmenu',
    textureURL: 'images/MainMenu.png',
    normalMap: 'images/MainMenu-n.png',
    atlasURL: 'images/MainMenu.xml'
});

The normal map file is subject to the same conditions as the image file with regard to the path, baseURL, CORs and XHR Settings. Normal maps are a WebGL only feature.

Note: The ability to load this type of file will only be available if the Atlas XML File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.AtlasXMLFileConfig	Array.<Phaser.Types.Loader.FileTypes.AtlasXMLFileConfig>	No
textureURL	string \| Array.<string>	Yes	The absolute or relative URL to load the texture image file from. If undefined or `null` it will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png".
atlasURL	string	Yes	The absolute or relative URL to load the texture atlas xml data file from. If undefined or `null` it will be set to `<key>.xml`, i.e. if `key` was "alien" then the URL will be "alien.xml".
textureXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas image file. Used in replacement of the Loaders default XHR Settings.
atlasXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas xml file. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/AtlasXMLFile.js#L107
Since: 3.7.0

audio

<instance> audio(key, [urls], [config], [xhrSettings])

Description:

Adds an Audio or HTML5Audio file, or array of audio files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.audio('title', [ 'music/Title.ogg', 'music/Title.mp3', 'music/Title.m4a' ]);
}

The key must be a unique String. It is used to add the file to the global Audio Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the Audio Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the Audio Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.audio({
    key: 'title',
    url: [ 'music/Title.ogg', 'music/Title.mp3', 'music/Title.m4a' ]
});

See the documentation for Phaser.Types.Loader.FileTypes.AudioFileConfig for more details.

The URLs can be relative or absolute. If the URLs are relative the Loader.baseURL and Loader.path values will be prepended to them.

Due to different browsers supporting different audio file types you should usually provide your audio files in a variety of formats. ogg, mp3 and m4a are the most common. If you provide an array of URLs then the Loader will determine which one file to load based on browser support.

If audio has been disabled in your game, either via the game config, or lack of support from the device, then no audio will be loaded.

Note: The ability to load this type of file will only be available if the Audio File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.AudioFileConfig	Array.<Phaser.Types.Loader.FileTypes.AudioFileConfig>	No
urls	string \| Array.<string>	Phaser.Types.Loader.FileTypes.AudioFileURLConfig	Array.<Phaser.Types.Loader.FileTypes.AudioFileURLConfig>
config	any	Yes	An object containing an `instances` property for HTML5Audio. Defaults to 1.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/AudioFile.js#L172
Since: 3.0.0

audioSprite

<instance> audioSprite(key, jsonURL, [audioURL], [audioConfig], [audioXhrSettings], [jsonXhrSettings])

Description:

Adds a JSON based Audio Sprite, or array of audio sprites, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.audioSprite('kyobi', 'kyobi.json', [
        'kyobi.ogg',
        'kyobi.mp3',
        'kyobi.m4a'
    ]);
}

Audio Sprites are a combination of audio files and a JSON configuration. The JSON follows the format of that created by https://github.com/tonistiigi/audiosprite

If the JSON file includes a 'resource' object then you can let Phaser parse it and load the audio files automatically based on its content. To do this exclude the audio URLs from the load:

function preload ()
{
    this.load.audioSprite('kyobi', 'kyobi.json');
}

Instead of passing arguments you can pass a configuration object, such as:

this.load.audioSprite({
    key: 'kyobi',
    jsonURL: 'audio/Kyobi.json',
    audioURL: [
        'audio/Kyobi.ogg',
        'audio/Kyobi.mp3',
        'audio/Kyobi.m4a'
    ]
});

See the documentation for Phaser.Types.Loader.FileTypes.AudioSpriteFileConfig for more details.

Instead of passing a URL for the audio JSON data you can also pass in a well formed JSON object instead.

Once the audio has finished loading you can use it create an Audio Sprite by referencing its key:

this.load.audioSprite('kyobi', 'kyobi.json');
// and later in your game ...
var music = this.sound.addAudioSprite('kyobi');
music.play('title');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If audio has been disabled in your game, either via the game config, or lack of support from the device, then no audio will be loaded.

Note: The ability to load this type of file will only be available if the Audio Sprite File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.AudioSpriteFileConfig	Array.<Phaser.Types.Loader.FileTypes.AudioSpriteFileConfig>	No
jsonURL	string	No	The absolute or relative URL to load the json file from. Or a well formed JSON object to use instead.
audioURL	string \| Array.<string>	Yes	The absolute or relative URL to load the audio file from. If empty it will be obtained by parsing the JSON file.
audioConfig	any	Yes	The audio configuration options.
audioXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the audio file. Used in replacement of the Loaders default XHR Settings.
jsonXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the json file. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/AudioSpriteFile.js#L143
Since: 3.0.0

binary

<instance> binary(key, [url], [dataType], [xhrSettings])

Description:

Adds a Binary file, or array of Binary files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.binary('doom', 'files/Doom.wad');
}

The key must be a unique String. It is used to add the file to the global Binary Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the Binary Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the Binary Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.binary({
    key: 'doom',
    url: 'files/Doom.wad',
    dataType: Uint8Array
});

See the documentation for Phaser.Types.Loader.FileTypes.BinaryFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.binary('doom', 'files/Doom.wad');
// and later in your game ...
var data = this.cache.binary.get('doom');

If you have specified a prefix in the loader, via Loader.setPrefix then this value will be prepended to this files key. For example, if the prefix was LEVEL1. and the key was Data the final key will be LEVEL1.Data and this is what you would use to retrieve the text from the Binary Cache.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "doom" and no URL is given then the Loader will set the URL to be "doom.bin". It will always add .bin as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Binary File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.BinaryFileConfig	Array.<Phaser.Types.Loader.FileTypes.BinaryFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.bin`, i.e. if `key` was "alien" then the URL will be "alien.bin".
dataType	any	Yes	Optional type to cast the binary file to once loaded. For example, `Uint8Array`.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/BinaryFile.js#L89
Since: 3.0.0

bitmapFont

<instance> bitmapFont(key, [textureURL], [fontDataURL], [textureXhrSettings], [fontDataXhrSettings])

Description:

Adds an XML based Bitmap Font, or array of fonts, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.bitmapFont('goldenFont', 'images/GoldFont.png', 'images/GoldFont.xml');
}

Phaser expects the font data to be provided in an XML file format. These files are created by software such as the Angelcode Bitmap Font Generator, Littera or Glyph Designer

Phaser can load all common image types: png, jpg, gif and any other format the browser can natively handle.

Instead of passing arguments you can pass a configuration object, such as:

this.load.bitmapFont({
    key: 'goldenFont',
    textureURL: 'images/GoldFont.png',
    fontDataURL: 'images/GoldFont.xml'
});

See the documentation for Phaser.Types.Loader.FileTypes.BitmapFontFileConfig for more details.

Once the atlas has finished loading you can use key of it when creating a Bitmap Text Game Object:

this.load.bitmapFont('goldenFont', 'images/GoldFont.png', 'images/GoldFont.xml');
// and later in your game ...
this.add.bitmapText(x, y, 'goldenFont', 'Hello World');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

this.load.bitmapFont('goldenFont', [ 'images/GoldFont.png', 'images/GoldFont-n.png' ], 'images/GoldFont.xml');

Or, if you are using a config object use the normalMap property:

this.load.bitmapFont({
    key: 'goldenFont',
    textureURL: 'images/GoldFont.png',
    normalMap: 'images/GoldFont-n.png',
    fontDataURL: 'images/GoldFont.xml'
});

The normal map file is subject to the same conditions as the image file with regard to the path, baseURL, CORs and XHR Settings. Normal maps are a WebGL only feature.

Note: The ability to load this type of file will only be available if the Bitmap Font File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.BitmapFontFileConfig	Array.<Phaser.Types.Loader.FileTypes.BitmapFontFileConfig>	No
textureURL	string \| Array.<string>	Yes	The absolute or relative URL to load the font image file from. If undefined or `null` it will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png".
fontDataURL	string	Yes	The absolute or relative URL to load the font xml data file from. If undefined or `null` it will be set to `<key>.xml`, i.e. if `key` was "alien" then the URL will be "alien.xml".
textureXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the font image file. Used in replacement of the Loaders default XHR Settings.
fontDataXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the font data xml file. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/BitmapFontFile.js#L113
Since: 3.0.0

css

<instance> css(key, [url], [xhrSettings])

Description:

Adds a CSS file, or array of CSS files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.css('headers', 'styles/headers.css');
}

The key must be a unique String and not already in-use by another file in the Loader.

Instead of passing arguments you can pass a configuration object, such as:

this.load.css({
    key: 'headers',
    url: 'styles/headers.css'
});

See the documentation for Phaser.Types.Loader.FileTypes.CSSFileConfig for more details.

Once the file has finished loading it will automatically be converted into a style DOM element via document.createElement('style'). It will have its defer property set to false and then the resulting element will be appended to document.head. The CSS styles are then applied to the current document.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "alien" and no URL is given then the Loader will set the URL to be "alien.css". It will always add .css as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the CSS File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.CSSFileConfig	Array.<Phaser.Types.Loader.FileTypes.CSSFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.css`, i.e. if `key` was "alien" then the URL will be "alien.css".
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/CSSFile.js#L88
Since: 3.17.0

emit

<instance> emit(event, [args])

Description:

Calls each of the listeners registered for a given event.

Parameters:

name	type	optional	description
event	string \| symbol	No	The event name.
args	*	Yes	Additional arguments that will be passed to the event handler.

Returns: boolean - true if the event had listeners, else false.

Inherits: Phaser.Events.EventEmitter#emit

Source: src/events/EventEmitter.js#L86
Since: 3.0.0

eventNames

<instance> eventNames()

Description:

Return an array listing the events for which the emitter has registered listeners.

Returns: Array.<(string | symbol)> - undefined

Inherits: Phaser.Events.EventEmitter#eventNames

Source: src/events/EventEmitter.js#L55
Since: 3.0.0

fileProcessComplete

<instance> fileProcessComplete(file)

Description:

An internal method that is called automatically by the File when it has finished processing.

If the process was successful, and the File isn't part of a MultiFile, its addToCache method is called.

It this then removed from the queue. If there are no more files to load loadComplete is called.

Parameters:

name	type	optional	description
file	Phaser.Loader.File	No	The file that has finished processing.

Source: src/loader/LoaderPlugin.js#L1067
Since: 3.7.0

flagForRemoval

<instance> flagForRemoval(file)

Description:

Adds a File into the pending-deletion queue.

Parameters:

name	type	optional	description
file	Phaser.Loader.File	No	The File to be queued for deletion when the Loader completes.

Source: src/loader/LoaderPlugin.js#L1158
Since: 3.7.0

glsl

<instance> glsl(key, [url], [shaderType], [xhrSettings])

Description:

Adds a GLSL file, or array of GLSL files, to the current load queue. In Phaser 3 GLSL files are just plain Text files at the current moment in time.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.glsl('plasma', 'shaders/Plasma.glsl');
}

The key must be a unique String. It is used to add the file to the global Shader Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the Shader Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the Shader Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.glsl({
    key: 'plasma',
    shaderType: 'fragment',
    url: 'shaders/Plasma.glsl'
});

See the documentation for Phaser.Types.Loader.FileTypes.GLSLFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.glsl('plasma', 'shaders/Plasma.glsl');
// and later in your game ...
var data = this.cache.shader.get('plasma');

If you have specified a prefix in the loader, via Loader.setPrefix then this value will be prepended to this files key. For example, if the prefix was FX. and the key was Plasma the final key will be FX.Plasma and this is what you would use to retrieve the text from the Shader Cache.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "plasma" and no URL is given then the Loader will set the URL to be "plasma.glsl". It will always add .glsl as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the GLSL File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	default	description
key	string \| Phaser.Types.Loader.FileTypes.GLSLFileConfig	Array.<Phaser.Types.Loader.FileTypes.GLSLFileConfig>	No
url	string	Yes		The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.glsl`, i.e. if `key` was "alien" then the URL will be "alien.glsl".
shaderType	string	Yes	"'fragment'"	The type of shader. Either `fragment` for a fragment shader, or `vertex` for a vertex shader. This is ignored if you load a shader bundle.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes		An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/GLSLFile.js#L315
Since: 3.0.0

html

<instance> html(key, [url], [xhrSettings])

Description:

Adds an HTML file, or array of HTML files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.html('story', 'files/LoginForm.html');
}

The key must be a unique String. It is used to add the file to the global HTML Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the HTML Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the HTML Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.html({
    key: 'login',
    url: 'files/LoginForm.html'
});

See the documentation for Phaser.Types.Loader.FileTypes.HTMLFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.html('login', 'files/LoginForm.html');
// and later in your game ...
var data = this.cache.html.get('login');

If you have specified a prefix in the loader, via Loader.setPrefix then this value will be prepended to this files key. For example, if the prefix was LEVEL1. and the key was Story the final key will be LEVEL1.Story and this is what you would use to retrieve the html from the HTML Cache.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "story" and no URL is given then the Loader will set the URL to be "story.html". It will always add .html as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the HTML File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.HTMLFileConfig	Array.<Phaser.Types.Loader.FileTypes.HTMLFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.html`, i.e. if `key` was "alien" then the URL will be "alien.html".
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/HTMLFile.js#L84
Since: 3.12.0

htmlTexture

<instance> htmlTexture(key, [url], [width], [height], [xhrSettings])

Description:

Adds an HTML File, or array of HTML Files, to the current load queue. When the files are loaded they will be rendered to textures and stored in the Texture Manager.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.htmlTexture('instructions', 'content/intro.html', 256, 512);
}

Instead of passing arguments you can pass a configuration object, such as:

this.load.htmlTexture({
    key: 'instructions',
    url: 'content/intro.html',
    width: 256,
    height: 512
});

See the documentation for Phaser.Types.Loader.FileTypes.HTMLTextureFileConfig for more details.

Once the file has finished loading you can use it as a texture for a Game Object by referencing its key:

this.load.htmlTexture('instructions', 'content/intro.html', 256, 512);
// and later in your game ...
this.add.image(x, y, 'instructions');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "alien" and no URL is given then the Loader will set the URL to be "alien.html". It will always add .html as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

The width and height are the size of the texture to which the HTML will be rendered. It's not possible to determine these automatically, so you will need to provide them, either as arguments or in the file config object. When the HTML file has loaded a new SVG element is created with a size and viewbox set to the width and height given. The SVG file has a body tag added to it, with the HTML file contents included. It then calls window.Blob on the SVG, and if successful is added to the Texture Manager, otherwise it fails processing. The overall quality of the rendered HTML depends on your browser, and some of them may not even support the svg / blob process used. Be aware that there are limitations on what HTML can be inside an SVG. You can find out more details in this Mozilla MDN entry.

Note: The ability to load this type of file will only be available if the HTMLTextureFile File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	default	description
key	string \| Phaser.Types.Loader.FileTypes.HTMLTextureFileConfig	Array.<Phaser.Types.Loader.FileTypes.HTMLTextureFileConfig>	No
url	string	Yes		The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.html`, i.e. if `key` was "alien" then the URL will be "alien.html".
width	number	Yes	512	The width of the texture the HTML will be rendered to.
height	number	Yes	512	The height of the texture the HTML will be rendered to.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes		An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/HTMLTextureFile.js#L151
Since: 3.12.0

image

<instance> image(key, [url], [xhrSettings])

Description:

Adds an Image, or array of Images, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.image('logo', 'images/phaserLogo.png');
}

Phaser can load all common image types: png, jpg, gif and any other format the browser can natively handle. If you try to load an animated gif only the first frame will be rendered. Browsers do not natively support playback of animated gifs to Canvas elements.

Instead of passing arguments you can pass a configuration object, such as:

this.load.image({
    key: 'logo',
    url: 'images/AtariLogo.png'
});

See the documentation for Phaser.Types.Loader.FileTypes.ImageFileConfig for more details.

Once the file has finished loading you can use it as a texture for a Game Object by referencing its key:

this.load.image('logo', 'images/AtariLogo.png');
// and later in your game ...
this.add.image(x, y, 'logo');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

this.load.image('logo', [ 'images/AtariLogo.png', 'images/AtariLogo-n.png' ]);

Or, if you are using a config object use the normalMap property:

this.load.image({
    key: 'logo',
    url: 'images/AtariLogo.png',
    normalMap: 'images/AtariLogo-n.png'
});

The normal map file is subject to the same conditions as the image file with regard to the path, baseURL, CORs and XHR Settings. Normal maps are a WebGL only feature.

In Phaser 3.60 a new property was added that allows you to control how images are loaded. By default, images are loaded via XHR as Blobs. However, you can set loader.imageLoadType: "HTMLImageElement" in the Game Configuration and instead, the Loader will load all images via the Image tag instead.

Note: The ability to load this type of file will only be available if the Image File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.ImageFileConfig	Array.<Phaser.Types.Loader.FileTypes.ImageFileConfig>	No
url	string \| Array.<string>	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png".
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/ImageFile.js#L234
Since: 3.0.0

isLoading

<instance> isLoading()

Description:

Is the Loader actively loading, or processing loaded files?

Returns: boolean - true if the Loader is busy loading or processing, otherwise false.

Source: src/loader/LoaderPlugin.js#L874
Since: 3.0.0

isReady

<instance> isReady()

Description:

Is the Loader ready to start a new load?

Returns: boolean - true if the Loader is ready to start a new load, otherwise false.

Source: src/loader/LoaderPlugin.js#L887
Since: 3.0.0

json

<instance> json(key, [url], [dataKey], [xhrSettings])

Description:

Adds a JSON file, or array of JSON files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.json('wavedata', 'files/AlienWaveData.json');
}

Instead of passing arguments you can pass a configuration object, such as:

this.load.json({
    key: 'wavedata',
    url: 'files/AlienWaveData.json'
});

See the documentation for Phaser.Types.Loader.FileTypes.JSONFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.json('wavedata', 'files/AlienWaveData.json');
// and later in your game ...
var data = this.cache.json.get('wavedata');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

{
    "level1": {
        "baddies": {
            "aliens": {},
            "boss": {}
        }
    },
    "level2": {},
    "level3": {}
}

And you only wanted to store the boss data in the Cache, then you could pass level1.baddies.bossas the dataKey.

Note: The ability to load this type of file will only be available if the JSON File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.JSONFileConfig	Array.<Phaser.Types.Loader.FileTypes.JSONFileConfig>	No
url	object \| string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json". Or, can be a fully formed JSON Object.
dataKey	string	Yes	When the JSON file loads only this property will be stored in the Cache.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/JSONFile.js#L129
Since: 3.0.0

keyExists

<instance> keyExists(file)

Description:

Checks the key and type of the given file to see if it will conflict with anything already in a Cache, the Texture Manager, or the list or inflight queues.

Parameters:

name	type	optional	description
file	Phaser.Loader.File	No	The file to check the key of.

Returns: boolean - true if adding this file will cause a cache or queue conflict, otherwise false.

Source: src/loader/LoaderPlugin.js#L561
Since: 3.7.0

listenerCount

<instance> listenerCount(event)

Description:

Return the number of listeners listening to a given event.

Parameters:

name	type	optional	description
event	string \| symbol	No	The event name.

Returns: number - The number of listeners.

Inherits: Phaser.Events.EventEmitter#listenerCount

Source: src/events/EventEmitter.js#L75
Since: 3.0.0

listeners

<instance> listeners(event)

Description:

Return the listeners registered for a given event.

Parameters:

name	type	optional	description
event	string \| symbol	No	The event name.

Returns: Array.<function()> - The registered listeners.

Inherits: Phaser.Events.EventEmitter#listeners

Source: src/events/EventEmitter.js#L64
Since: 3.0.0

loadComplete

<instance> loadComplete()

Description:

Called at the end when the load queue is exhausted and all files have either loaded or errored. By this point every loaded file will now be in its associated cache and ready for use.

Also clears down the Sets, puts progress to 1 and clears the deletion queue.

Fires: Phaser.Loader.Events#event:COMPLETE, Phaser.Loader.Events#event:POST_PROCESS

Source: src/loader/LoaderPlugin.js#L1125
Since: 3.7.0

multiatlas

<instance> multiatlas(key, [atlasURL], [path], [baseURL], [atlasXhrSettings])

Description:

Adds a Multi Texture Atlas, or array of multi atlases, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.multiatlas('level1', 'images/Level1.json');
}

Phaser expects the atlas data to be provided in a JSON file as exported from the application Texture Packer, version 4.6.3 or above, where you have made sure to use the Phaser 3 Export option.

The way it works internally is that you provide a URL to the JSON file. Phaser then loads this JSON, parses it and extracts which texture files it also needs to load to complete the process. If the JSON also defines normal maps, Phaser will load those as well.

Instead of passing arguments you can pass a configuration object, such as:

this.load.multiatlas({
    key: 'level1',
    atlasURL: 'images/Level1.json'
});

See the documentation for Phaser.Types.Loader.FileTypes.MultiAtlasFileConfig for more details.

Instead of passing a URL for the atlas JSON data you can also pass in a well formed JSON object instead.

Once the atlas has finished loading you can use frames from it as textures for a Game Object by referencing its key:

this.load.multiatlas('level1', 'images/Level1.json');
// and later in your game ...
this.add.image(x, y, 'level1', 'background');

To get a list of all available frames within an atlas please consult your Texture Atlas software.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

Note: The ability to load this type of file will only be available if the Multi Atlas File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.MultiAtlasFileConfig	Array.<Phaser.Types.Loader.FileTypes.MultiAtlasFileConfig>	No
atlasURL	string	Yes	The absolute or relative URL to load the texture atlas json data file from. If undefined or `null` it will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json".
path	string	Yes	Optional path to use when loading the textures defined in the atlas data.
baseURL	string	Yes	Optional Base URL to use when loading the textures defined in the atlas data.
atlasXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas json file. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/MultiAtlasFile.js#L212
Since: 3.7.0

nextFile

<instance> nextFile(file, success)

Description:

An internal method called automatically by the XHRLoader belonging to a File.

This method will remove the given file from the inflight Set and update the load progress. If the file was successful its onProcess method is called, otherwise it is added to the delete queue.

Parameters:

name	type	optional	description
file	Phaser.Loader.File	No	The File that just finished loading, or errored during load.
success	boolean	No	`true` if the file loaded successfully, otherwise `false`.

Fires: Phaser.Loader.Events#event:FILE_LOAD, Phaser.Loader.Events#event:FILE_LOAD_ERROR

Source: src/loader/LoaderPlugin.js#L1019
Since: 3.0.0

obj

<instance> obj(key, [objURL], [matURL], [flipUV], [xhrSettings])

Description:

Adds a Wavefront OBJ file, or array of OBJ files, to the current load queue.

Note: You should ensure your 3D package has triangulated the OBJ file prior to export.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.obj('ufo', 'files/spaceship.obj');
}

You can optionally also load a Wavefront Material file as well, by providing the 3rd parameter:

function preload ()
{
    this.load.obj('ufo', 'files/spaceship.obj', 'files/spaceship.mtl');
}

If given, the material will be parsed and stored along with the obj data in the cache.

The key must be a unique String. It is used to add the file to the global OBJ Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the OBJ Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the OBJ Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.obj({
    key: 'ufo',
    url: 'files/spaceship.obj',
    matURL: 'files/spaceship.mtl',
    flipUV: true
});

See the documentation for Phaser.Types.Loader.FileTypes.OBJFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.obj('ufo', 'files/spaceship.obj');
// and later in your game ...
var data = this.cache.obj.get('ufo');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "story" and no URL is given then the Loader will set the URL to be "story.obj". It will always add .obj as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the OBJ File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.OBJFileConfig	Array.<Phaser.Types.Loader.FileTypes.OBJFileConfig>	No
objURL	string	Yes	The absolute or relative URL to load the obj file from. If undefined or `null` it will be set to `<key>.obj`, i.e. if `key` was "alien" then the URL will be "alien.obj".
matURL	string	Yes	Optional absolute or relative URL to load the obj material file from.
flipUV	boolean	Yes	Flip the UV coordinates stored in the model data?
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/OBJFile.js#L140
Since: 3.50.0

off

<instance> off(event, [fn], [context], [once])

Description:

Remove the listeners of a given event.

Parameters:

name	type	optional	description
event	string \| symbol	No	The event name.
fn	function	Yes	Only remove the listeners that match this function.
context	*	Yes	Only remove the listeners that have this context.
once	boolean	Yes	Only remove one-time listeners.

Returns: Phaser.Loader.LoaderPlugin - this.

Inherits: Phaser.Events.EventEmitter#off

Source: src/events/EventEmitter.js#L151
Since: 3.0.0

on

<instance> on(event, fn, [context])

Description:

Add a listener for a given event.

Parameters:

name	type	optional	default	description
event	string \| symbol	No		The event name.
fn	function	No		The listener function.
context	*	Yes	"this"	The context to invoke the listener with.

Returns: Phaser.Loader.LoaderPlugin - this.

Inherits: Phaser.Events.EventEmitter#on

Source: src/events/EventEmitter.js#L98
Since: 3.0.0

once

<instance> once(event, fn, [context])

Description:

Add a one-time listener for a given event.

Parameters:

name	type	optional	default	description
event	string \| symbol	No		The event name.
fn	function	No		The listener function.
context	*	Yes	"this"	The context to invoke the listener with.

Returns: Phaser.Loader.LoaderPlugin - this.

Inherits: Phaser.Events.EventEmitter#once

Source: src/events/EventEmitter.js#L124
Since: 3.0.0

pack

<instance> pack(key, [url], [dataKey], [xhrSettings])

Description:

Adds a JSON File Pack, or array of packs, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.pack('level1', 'data/Level1Files.json');
}

A File Pack is a JSON file (or object) that contains details about other files that should be added into the Loader. Here is a small example:

{
   "test1": {
       "files": [
           {
               "type": "image",
               "key": "taikodrummaster",
               "url": "assets/pics/taikodrummaster.jpg"
           },
           {
               "type": "image",
               "key": "sukasuka-chtholly",
               "url": "assets/pics/sukasuka-chtholly.png"
           }
       ]
   },
   "meta": {
       "generated": "1401380327373",
       "app": "Phaser 3 Asset Packer",
       "url": "[https://phaser.io](https://phaser.io)",
       "version": "1.0",
       "copyright": "Photon Storm Ltd. 2018"
   }
}

The pack can be split into sections. In the example above you'll see a section called test1. You can tell the load.pack method to parse only a particular section of a pack. The pack is stored in the JSON Cache, so you can pass it to the Loader to process additional sections as needed in your game, or you can just load them all at once without specifying anything.

The pack file can contain an entry for any type of file that Phaser can load. The object structures exactly match that of the file type configs, and all properties available within the file type configs can be used in the pack file too. An entry's type is the name of the Loader method that will load it, e.g., 'image'.

Instead of passing arguments you can pass a configuration object, such as:

this.load.pack({
    key: 'level1',
    url: 'data/Level1Files.json'
});

See the documentation for Phaser.Types.Loader.FileTypes.PackFileConfig for more details.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

{
    "level1": {
        "baddies": {
            "aliens": {},
            "boss": {}
        }
    },
    "level2": {},
    "level3": {}
}

And you only wanted to store the boss data in the Cache, then you could pass level1.baddies.bossas the dataKey.

Note: The ability to load this type of file will only be available if the Pack File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.PackFileConfig	Array.<Phaser.Types.Loader.FileTypes.PackFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json".
dataKey	string	Yes	When the JSON file loads only this property will be stored in the Cache.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/PackFile.js#L81
Since: 3.7.0

plugin

<instance> plugin(key, [url], [start], [mapping], [xhrSettings])

Description:

Adds a Plugin Script file, or array of plugin files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.plugin('modplayer', 'plugins/ModPlayer.js');
}

The key must be a unique String and not already in-use by another file in the Loader.

Instead of passing arguments you can pass a configuration object, such as:

this.load.plugin({
    key: 'modplayer',
    url: 'plugins/ModPlayer.js'
});

See the documentation for Phaser.Types.Loader.FileTypes.PluginFileConfig for more details.

Once the file has finished loading it will automatically be converted into a script element via document.createElement('script'). It will have its language set to JavaScript, defer set to false and then the resulting element will be appended to document.head. Any code then in the script will be executed. It will then be passed to the Phaser PluginCache.register method.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "alien" and no URL is given then the Loader will set the URL to be "alien.js". It will always add .js as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Plugin File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.PluginFileConfig	Array.<Phaser.Types.Loader.FileTypes.PluginFileConfig>	No
url	string \| function	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.js`, i.e. if `key` was "alien" then the URL will be "alien.js". Or, a plugin function.
start	boolean	Yes	Automatically start the plugin after loading?
mapping	string	Yes	If this plugin is to be injected into the Scene, this is the property key used.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/PluginFile.js#L129
Since: 3.0.0

removeAllListeners

<instance> removeAllListeners([event])

Description:

Remove all listeners, or those of the specified event.

Parameters:

name	type	optional	description
event	string \| symbol	Yes	The event name.

Returns: Phaser.Loader.LoaderPlugin - this.

Inherits: Phaser.Events.EventEmitter#removeAllListeners

Source: src/events/EventEmitter.js#L165
Since: 3.0.0

removeListener

<instance> removeListener(event, [fn], [context], [once])

Description:

Remove the listeners of a given event.

Parameters:

name	type	optional	description
event	string \| symbol	No	The event name.
fn	function	Yes	Only remove the listeners that match this function.
context	*	Yes	Only remove the listeners that have this context.
once	boolean	Yes	Only remove one-time listeners.

Returns: Phaser.Loader.LoaderPlugin - this.

Inherits: Phaser.Events.EventEmitter#removeListener

Source: src/events/EventEmitter.js#L137
Since: 3.0.0

removePack

<instance> removePack(packKey, [dataKey])

Description:

Remove the resources listed in an Asset Pack.

This removes Animations from the Animation Manager, Textures from the Texture Manager, and all other assets from their respective caches. It doesn't remove the Pack itself from the JSON cache, if it exists there. If the Pack includes another Pack, its resources will be removed too.

Parameters:

name	type	optional	description
packKey	string \| object	No	The key of an Asset Pack in the JSON cache, or a Pack File data.
dataKey	string	Yes	A key in the Pack data, if you want to process only a section of it.

Source: src/loader/LoaderPlugin.js#L700
Since: 3.85.0

reset

<instance> reset()

Description:

Resets the Loader.

This will clear all lists and reset the base URL, path and prefix.

Warning: If the Loader is currently downloading files, or has files in its queue, they will be aborted.

Source: src/loader/LoaderPlugin.js#L1223
Since: 3.0.0

save

<instance> save(data, [filename], [filetype])

Description:

Causes the browser to save the given data as a file to its default Downloads folder.

Creates a DOM level anchor link, assigns it as being a download anchor, sets the href to be an ObjectURL based on the given data, and then invokes a click event.

Parameters:

name	type	optional	default	description
data	*	No		The data to be saved. Will be passed through URL.createObjectURL.
filename	string	Yes	"file.json"	The filename to save the file as.
filetype	string	Yes	"application/json"	The file type to use when saving the file. Defaults to JSON.

Returns: Phaser.Loader.LoaderPlugin - This Loader plugin.

Source: src/loader/LoaderPlugin.js#L1189
Since: 3.0.0

saveJSON

<instance> saveJSON(data, [filename])

Description:

Converts the given JSON data into a file that the browser then prompts you to download so you can save it locally.

The data must be well formed JSON and ready-parsed, not a JavaScript object.

Parameters:

name	type	optional	default	description
data	*	No		The JSON data, ready parsed.
filename	string	Yes	"file.json"	The name to save the JSON file as.

Returns: Phaser.Loader.LoaderPlugin - This Loader plugin.

Source: src/loader/LoaderPlugin.js#L1171
Since: 3.0.0

sceneFile

<instance> sceneFile(key, [url], [xhrSettings])

Description:

Adds an external Scene file, or array of Scene files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.sceneFile('Level1', 'src/Level1.js');
}

The key must be a unique String. It is used to add the file to the global Scene Manager upon a successful load.

For a Scene File it's vitally important that the key matches the class name in the JavaScript file.

For example here is the source file:

class ExternalScene extends Phaser.Scene {

    constructor ()
    {
        super('myScene');
    }

}

Because the class is called ExternalScene that is the exact same key you must use when loading it:

function preload ()
{
    this.load.sceneFile('ExternalScene', 'src/yourScene.js');
}

The key that is used within the Scene Manager can either be set to the same, or you can override it in the Scene constructor, as we've done in the example above, where the Scene key was changed to myScene.

The key should be unique both in terms of files being loaded and Scenes already present in the Scene Manager. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the Scene Manager first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.sceneFile({
    key: 'Level1',
    url: 'src/Level1.js'
});

See the documentation for Phaser.Types.Loader.FileTypes.SceneFileConfig for more details.

Once the file has finished loading it will be added to the Scene Manager.

this.load.sceneFile('Level1', 'src/Level1.js');
// and later in your game ...
this.scene.start('Level1');

If you have specified a prefix in the loader, via Loader.setPrefix then this value will be prepended to this files key. For example, if the prefix was WORLD1. and the key was Story the final key will be WORLD1.Story and this is what you would use to retrieve the text from the Scene Manager.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "story" and no URL is given then the Loader will set the URL to be "story.js". It will always add .js as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Scene File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.SceneFileConfig	Array.<Phaser.Types.Loader.FileTypes.SceneFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.js`, i.e. if `key` was "alien" then the URL will be "alien.js".
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/SceneFile.js#L101
Since: 3.16.0

scenePlugin

<instance> scenePlugin(key, [url], [systemKey], [sceneKey], [xhrSettings])

Description:

Adds a Scene Plugin Script file, or array of plugin files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.scenePlugin('ModPlayer', 'plugins/ModPlayer.js', 'modPlayer', 'mods');
}

The key must be a unique String and not already in-use by another file in the Loader.

Instead of passing arguments you can pass a configuration object, such as:

this.load.scenePlugin({
    key: 'modplayer',
    url: 'plugins/ModPlayer.js'
});

See the documentation for Phaser.Types.Loader.FileTypes.ScenePluginFileConfig for more details.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "alien" and no URL is given then the Loader will set the URL to be "alien.js". It will always add .js as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Script File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.ScenePluginFileConfig	Array.<Phaser.Types.Loader.FileTypes.ScenePluginFileConfig>	No
url	string \| function	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.js`, i.e. if `key` was "alien" then the URL will be "alien.js". Or, set to a plugin function.
systemKey	string	Yes	If this plugin is to be added to Scene.Systems, this is the property key for it.
sceneKey	string	Yes	If this plugin is to be added to the Scene, this is the property key for it.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/ScenePluginFile.js#L123
Since: 3.8.0

script

<instance> script(key, [url], [type], [xhrSettings])

Description:

Adds a Script file, or array of Script files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.script('aliens', 'lib/aliens.js');
}

If the script file contains a module, then you should specify that using the 'type' parameter:

function preload ()
{
    this.load.script('aliens', 'lib/aliens.js', 'module');
}

The key must be a unique String and not already in-use by another file in the Loader.

Instead of passing arguments you can pass a configuration object, such as:

this.load.script({
    key: 'aliens',
    url: 'lib/aliens.js',
    type: 'script' // or 'module'
});

See the documentation for Phaser.Types.Loader.FileTypes.ScriptFileConfig for more details.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "alien" and no URL is given then the Loader will set the URL to be "alien.js". It will always add .js as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Script File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	default	description
key	string \| Phaser.Types.Loader.FileTypes.ScriptFileConfig	Array.<Phaser.Types.Loader.FileTypes.ScriptFileConfig>	No
url	string	Yes		The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.js`, i.e. if `key` was "alien" then the URL will be "alien.js".
type	string	Yes	"'script'"	The script type. Should be either 'script' for classic JavaScript, or 'module' if the file contains an exported module.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes		An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/ScriptFile.js#L96
Since: 3.0.0

scripts

<instance> scripts(key, [url], [extension], [xhrSettings])

Description:

Adds an array of Script files to the current load queue.

The difference between this and the ScriptFile file type is that you give an array of scripts to this method, and the scripts are then processed exactly in that order. This allows you to load a bunch of scripts that may have dependencies on each other without worrying about the async nature of traditional script loading.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.scripts('PostProcess', [
        'libs/shaders/CopyShader.js',
        'libs/postprocessing/EffectComposer.js',
        'libs/postprocessing/RenderPass.js',
        'libs/postprocessing/MaskPass.js',
        'libs/postprocessing/ShaderPass.js',
        'libs/postprocessing/AfterimagePass.js'
   ]);
}

In the code above the script files will all be loaded in parallel but only processed (i.e. invoked) in the exact order given in the array.

The files are not loaded right away. They are added to a queue ready to be loaded either when the loader starts, or if it's already running, when the next free load slot becomes available. This happens automatically if you are calling this from within the Scene's preload method, or a related callback. Because the files are queued it means you cannot use the files immediately after calling this method, but must wait for the files to complete. The typical flow for a Phaser Scene is that you load assets in the Scene's preload method and then when the Scene's create method is called you are guaranteed that all of those assets are ready for use and have been loaded.

The key must be a unique String and not already in-use by another file in the Loader.

Instead of passing arguments you can pass a configuration object, such as:

this.load.scripts({
    key: 'PostProcess',
    url: [
        'libs/shaders/CopyShader.js',
        'libs/postprocessing/EffectComposer.js',
        'libs/postprocessing/RenderPass.js',
        'libs/postprocessing/MaskPass.js',
        'libs/postprocessing/ShaderPass.js',
        'libs/postprocessing/AfterimagePass.js'
       ]
});

See the documentation for Phaser.Types.Loader.FileTypes.MultiScriptFileConfig for more details.

Once all the files have finished loading they will automatically be converted into a script element via document.createElement('script'). They will have their language set to JavaScript, defer set to false and then the resulting element will be appended to document.head. Any code then in the script will be executed. This is done in the exact order the files are specified in the url array.

The URLs can be relative or absolute. If the URLs are relative the Loader.baseURL and Loader.path values will be prepended to them.

Note: The ability to load this type of file will only be available if the MultiScript File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	default	description
key	string \| Phaser.Types.Loader.FileTypes.MultiScriptFileConfig	Array.<Phaser.Types.Loader.FileTypes.MultiScriptFileConfig>	No
url	Array.<string>	Yes		An array of absolute or relative URLs to load the script files from. They are processed in the order given in the array.
extension	string	Yes	"'js'"	The default file extension to use if no url is provided.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes		Extra XHR Settings specifically for these files.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/MultiScriptFile.js#L109
Since: 3.17.0

setBaseURL

<instance> setBaseURL([url])

Description:

If you want to append a URL before the path of any asset you can set this here.

Useful if allowing the asset base url to be configured outside of the game code.

Once a base URL is set it will affect every file loaded by the Loader from that point on. It does not change any file already being loaded. To reset it, call this method with no arguments.

Parameters:

name	type	optional	description
url	string	Yes	The URL to use. Leave empty to reset.

Returns: Phaser.Loader.LoaderPlugin - This Loader object.

Source: src/loader/LoaderPlugin.js#L399
Since: 3.0.0

setCORS

<instance> setCORS([crossOrigin])

Description:

Sets the Cross Origin Resource Sharing value used when loading files.

Files can override this value on a per-file basis by specifying an alternative crossOrigin value in their file config.

Once CORs is set it will then affect every file loaded by the Loader from that point on, as long as they don't have their own CORs setting. To reset it, call this method with no arguments.

For more details about CORs see https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

Parameters:

name	type	optional	description
crossOrigin	string	Yes	The value to use for the `crossOrigin` property in the load request.

Returns: Phaser.Loader.LoaderPlugin - This Loader object.

Source: src/loader/LoaderPlugin.js#L492
Since: 3.0.0

setPath

<instance> setPath([path])

Description:

The value of path, if set, is placed before any relative file path given. For example:

this.load.setPath("images/sprites/");
this.load.image("ball", "ball.png");
this.load.image("tree", "level1/oaktree.png");
this.load.image("boom", "[http://server.com/explode.png](http://server.com/explode.png)");

Would load the ball file from images/sprites/ball.png and the tree from images/sprites/level1/oaktree.png but the file boom would load from the URL given as it's an absolute URL.

Please note that the path is added before the filename but after the baseURL (if set.)

Once a path is set it will then affect every file added to the Loader from that point on. It does not change any file already in the load queue. To reset it, call this method with no arguments.

Parameters:

name	type	optional	description
path	string	Yes	The path to use. Leave empty to reset.

Returns: Phaser.Loader.LoaderPlugin - This Loader object.

Source: src/loader/LoaderPlugin.js#L428
Since: 3.0.0

setPrefix

<instance> setPrefix([prefix])

Description:

An optional prefix that is automatically prepended to the start of every file key.

If prefix was MENU. and you load an image with the key 'Background' the resulting key would be MENU.Background.

Once a prefix is set it will then affect every file added to the Loader from that point on. It does not change any file already in the load queue. To reset it, call this method with no arguments.

Parameters:

name	type	optional	description
prefix	string	Yes	The prefix to use. Leave empty to reset.

Returns: Phaser.Loader.LoaderPlugin - This Loader object.

Source: src/loader/LoaderPlugin.js#L468
Since: 3.7.0

spritesheet

<instance> spritesheet(key, [url], [frameConfig], [xhrSettings])

Description:

Adds a Sprite Sheet Image, or array of Sprite Sheet Images, to the current load queue.

The term 'Sprite Sheet' in Phaser means a fixed-size sheet. Where every frame in the sheet is the exact same size, and you reference those frames using numbers, not frame names. This is not the same thing as a Texture Atlas, where the frames are packed in a way where they take up the least amount of space, and are referenced by their names, not numbers. Some articles and software use the term 'Sprite Sheet' to mean Texture Atlas, so please be aware of what sort of file you're actually trying to load.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.spritesheet('bot', 'images/robot.png', { frameWidth: 32, frameHeight: 38 });
}

Instead of passing arguments you can pass a configuration object, such as:

this.load.spritesheet({
    key: 'bot',
    url: 'images/robot.png',
    frameConfig: {
        frameWidth: 32,
        frameHeight: 38,
        startFrame: 0,
        endFrame: 8
    }
});

See the documentation for Phaser.Types.Loader.FileTypes.SpriteSheetFileConfig for more details.

Once the file has finished loading you can use it as a texture for a Game Object by referencing its key:

this.load.spritesheet('bot', 'images/robot.png', { frameWidth: 32, frameHeight: 38 });
// and later in your game ...
this.add.image(x, y, 'bot', 0);

If you have specified a prefix in the loader, via Loader.setPrefix then this value will be prepended to this files key. For example, if the prefix was PLAYER. and the key was Running the final key will be PLAYER.Running and this is what you would use to retrieve the image from the Texture Manager.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

this.load.spritesheet('logo', [ 'images/AtariLogo.png', 'images/AtariLogo-n.png' ], { frameWidth: 256, frameHeight: 80 });

Or, if you are using a config object use the normalMap property:

this.load.spritesheet({
    key: 'logo',
    url: 'images/AtariLogo.png',
    normalMap: 'images/AtariLogo-n.png',
    frameConfig: {
        frameWidth: 256,
        frameHeight: 80
    }
});

The normal map file is subject to the same conditions as the image file with regard to the path, baseURL, CORs and XHR Settings. Normal maps are a WebGL only feature.

Note: The ability to load this type of file will only be available if the Sprite Sheet File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.SpriteSheetFileConfig	Array.<Phaser.Types.Loader.FileTypes.SpriteSheetFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png".
frameConfig	Phaser.Types.Loader.FileTypes.ImageFrameConfig	Yes	The frame configuration object. At a minimum it should have a `frameWidth` property.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/SpriteSheetFile.js#L87
Since: 3.0.0

start

<instance> start()

Description:

Starts the Loader running. This will reset the progress and totals and then emit a start event. If there is nothing in the queue the Loader will immediately complete, otherwise it will start loading the first batch of files.

The Loader is started automatically if the queue is populated within your Scenes preload method.

However, outside of this, you need to call this method to start it.

If the Loader is already running this method will simply return.

Fires: Phaser.Loader.Events#event:START

Source: src/loader/LoaderPlugin.js#L900
Since: 3.0.0

svg

<instance> svg(key, [url], [svgConfig], [xhrSettings])

Description:

Adds an SVG File, or array of SVG Files, to the current load queue. When the files are loaded they will be rendered to bitmap textures and stored in the Texture Manager.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.svg('morty', 'images/Morty.svg');
}

Instead of passing arguments you can pass a configuration object, such as:

this.load.svg({
    key: 'morty',
    url: 'images/Morty.svg'
});

See the documentation for Phaser.Types.Loader.FileTypes.SVGFileConfig for more details.

Once the file has finished loading you can use it as a texture for a Game Object by referencing its key:

this.load.svg('morty', 'images/Morty.svg');
// and later in your game ...
this.add.image(x, y, 'morty');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "alien" and no URL is given then the Loader will set the URL to be "alien.html". It will always add .html as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

You can optionally pass an SVG Resize Configuration object when you load an SVG file. By default the SVG will be rendered to a texture at the same size defined in the SVG file attributes. However, this isn't always desirable. You may wish to resize the SVG (either down or up) to improve texture clarity, or reduce texture memory consumption. You can either specify an exact width and height to resize the SVG to:

function preload ()
{
    this.load.svg('morty', 'images/Morty.svg', { width: 300, height: 600 });
}

Or when using a configuration object:

this.load.svg({
    key: 'morty',
    url: 'images/Morty.svg',
    svgConfig: {
        width: 300,
        height: 600
    }
});

Alternatively, you can just provide a scale factor instead:

function preload ()
{
    this.load.svg('morty', 'images/Morty.svg', { scale: 2.5 });
}

Or when using a configuration object:

this.load.svg({
    key: 'morty',
    url: 'images/Morty.svg',
    svgConfig: {
        scale: 2.5
    }
});

If scale, width and height values are all given, the scale has priority and the width and height values are ignored.

Note: The ability to load this type of file will only be available if the SVG File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.SVGFileConfig	Array.<Phaser.Types.Loader.FileTypes.SVGFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.svg`, i.e. if `key` was "alien" then the URL will be "alien.svg".
svgConfig	Phaser.Types.Loader.FileTypes.SVGSizeConfig	Yes	The svg size configuration object.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/SVGFile.js#L195
Since: 3.0.0

text

<instance> text(key, [url], [xhrSettings])

Description:

Adds a Text file, or array of Text files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.text('story', 'files/IntroStory.txt');
}

The key must be a unique String. It is used to add the file to the global Text Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the Text Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the Text Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.text({
    key: 'story',
    url: 'files/IntroStory.txt'
});

See the documentation for Phaser.Types.Loader.FileTypes.TextFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.text('story', 'files/IntroStory.txt');
// and later in your game ...
var data = this.cache.text.get('story');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "story" and no URL is given then the Loader will set the URL to be "story.txt". It will always add .txt as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Text File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.TextFileConfig	Array.<Phaser.Types.Loader.FileTypes.TextFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.txt`, i.e. if `key` was "alien" then the URL will be "alien.txt".
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/TextFile.js#L88
Since: 3.0.0

texture

<instance> texture(key, [url], [xhrSettings])

Description:

Adds a Compressed Texture file to the current load queue. This feature is WebGL only.

This method takes a key and a configuration object, which lists the different formats and files associated with them.

The texture format object should be ordered in GPU priority order, with IMG as the last entry.

You can call this method from within your Scene's preload, along with any other files you wish to load:

preload ()
{
    this.load.texture('yourPic', {
        ASTC: { type: 'PVR', textureURL: 'pic-astc-4x4.pvr' },
        PVRTC: { type: 'PVR', textureURL: 'pic-pvrtc-4bpp-rgba.pvr' },
        S3TC: { type: 'PVR', textureURL: 'pic-dxt5.pvr' },
        IMG: { textureURL: 'pic.png' }
    });

If you wish to load a texture atlas, provide the atlasURL property:

preload ()
{
    const path = 'assets/compressed';

    this.load.texture('yourAtlas', {
        'ASTC': { type: 'PVR', textureURL: `${path}/textures-astc-4x4.pvr`, atlasURL: `${path}/textures.json` },
        'PVRTC': { type: 'PVR', textureURL: `${path}/textures-pvrtc-4bpp-rgba.pvr`, atlasURL: `${path}/textures-pvrtc-4bpp-rgba.json` },
        'S3TC': { type: 'PVR', textureURL: `${path}/textures-dxt5.pvr`, atlasURL: `${path}/textures-dxt5.json` },
        'IMG': { textureURL: `${path}/textures.png`, atlasURL: `${path}/textures.json` }
    });
}

If you wish to load a Multi Atlas, as exported from Texture Packer Pro, use the multiAtlasURL property instead:

preload ()
{
    const path = 'assets/compressed';

    this.load.texture('yourAtlas', {
        'ASTC': { type: 'PVR', atlasURL: `${path}/textures.json` },
        'PVRTC': { type: 'PVR', atlasURL: `${path}/textures-pvrtc-4bpp-rgba.json` },
        'S3TC': { type: 'PVR', atlasURL: `${path}/textures-dxt5.json` },
        'IMG': { atlasURL: `${path}/textures.json` }
    });
}

When loading a Multi Atlas you do not need to specify the textureURL property as it will be read from the JSON file.

Instead of passing arguments you can pass a configuration object, such as:

this.load.texture({
    key: 'yourPic',
    url: {
        ASTC: { type: 'PVR', textureURL: 'pic-astc-4x4.pvr' },
        PVRTC: { type: 'PVR', textureURL: 'pic-pvrtc-4bpp-rgba.pvr' },
        S3TC: { type: 'PVR', textureURL: 'pic-dxt5.pvr' },
        IMG: { textureURL: 'pic.png' }
   }
});

See the documentation for Phaser.Types.Loader.FileTypes.CompressedTextureFileConfig for more details.

The number of formats you provide to this function is up to you, but you should ensure you cover the primary platforms where appropriate.

The 'IMG' entry is a fallback to a JPG or PNG, should the browser be unable to load any of the other formats presented to this function. You should really always include this, although it is optional.

Phaser supports loading both the PVR and KTX container formats. Within those, it can parse the following texture compression formats:

ETC ETC1 ATC ASTC BPTC RGTC PVRTC S3TC S3TCSRGB

For more information about the benefits of compressed textures please see the following articles:

Texture Compression in 2020 (https://aras-p.info/blog/2020/12/08/Texture-Compression-in-2020/) Compressed GPU Texture Formats (https://themaister.net/blog/2020/08/12/compressed-gpu-texture-formats-a-review-and-compute-shader-decoders-part-1/)

To create compressed texture files use a 3rd party application such as:

Texture Packer (https://www.codeandweb.com/texturepacker/tutorials/how-to-create-sprite-sheets-for-phaser3?utm_source=ad&utm_medium=banner&utm_campaign=phaser-2018-10-16) PVRTexTool (https://developer.imaginationtech.com/pvrtextool/) - available for Windows, macOS and Linux. Mali Texture Compression Tool (https://developer.arm.com/tools-and-software/graphics-and-gaming/mali-texture-compression-tool) ASTC Encoder (https://github.com/ARM-software/astc-encoder)

ASTCs must have a Channel Type of Unsigned Normalized Bytes (UNorm).

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

Unlike other file loaders in Phaser, the URLs must include the file extension.

Note: The ability to load this type of file will only be available if the Compressed Texture File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.CompressedTextureFileConfig	Array.<Phaser.Types.Loader.FileTypes.CompressedTextureFileConfig>	No
url	Phaser.Types.Loader.FileTypes.CompressedTextureFileConfig	Yes	The compressed texture configuration object. Not required if passing a config object as the `key` parameter.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/CompressedTextureFile.js#L337
Since: 3.60.0

tilemapCSV

<instance> tilemapCSV(key, [url], [xhrSettings])

Description:

Adds a CSV Tilemap file, or array of CSV files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.tilemapCSV('level1', 'maps/Level1.csv');
}

Tilemap CSV data can be created in a text editor, or a 3rd party app that exports as CSV.

The key must be a unique String. It is used to add the file to the global Tilemap Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the Tilemap Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the Text Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.tilemapCSV({
    key: 'level1',
    url: 'maps/Level1.csv'
});

See the documentation for Phaser.Types.Loader.FileTypes.TilemapCSVFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.tilemapCSV('level1', 'maps/Level1.csv');
// and later in your game ...
var map = this.make.tilemap({ key: 'level1' });

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "level" and no URL is given then the Loader will set the URL to be "level.csv". It will always add .csv as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Tilemap CSV File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.TilemapCSVFileConfig	Array.<Phaser.Types.Loader.FileTypes.TilemapCSVFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.csv`, i.e. if `key` was "alien" then the URL will be "alien.csv".
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/TilemapCSVFile.js#L100
Since: 3.0.0

tilemapImpact

<instance> tilemapImpact(key, [url], [xhrSettings])

Description:

Adds an Impact.js Tilemap file, or array of map files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.tilemapImpact('level1', 'maps/Level1.json');
}

Impact Tilemap data is created the Impact.js Map Editor called Weltmeister.

Instead of passing arguments you can pass a configuration object, such as:

this.load.tilemapImpact({
    key: 'level1',
    url: 'maps/Level1.json'
});

See the documentation for Phaser.Types.Loader.FileTypes.TilemapImpactFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.tilemapImpact('level1', 'maps/Level1.json');
// and later in your game ...
var map = this.make.tilemap({ key: 'level1' });

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "level" and no URL is given then the Loader will set the URL to be "level.json". It will always add .json as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Tilemap Impact File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.TilemapImpactFileConfig	Array.<Phaser.Types.Loader.FileTypes.TilemapImpactFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json".
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/TilemapImpactFile.js#L61
Since: 3.7.0

tilemapTiledJSON

<instance> tilemapTiledJSON(key, [url], [xhrSettings])

Description:

Adds a Tiled JSON Tilemap file, or array of map files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.tilemapTiledJSON('level1', 'maps/Level1.json');
}

The Tilemap data is created using the Tiled Map Editor and selecting JSON as the export format.

Instead of passing arguments you can pass a configuration object, such as:

this.load.tilemapTiledJSON({
    key: 'level1',
    url: 'maps/Level1.json'
});

See the documentation for Phaser.Types.Loader.FileTypes.TilemapJSONFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.tilemapTiledJSON('level1', 'maps/Level1.json');
// and later in your game ...
var map = this.make.tilemap({ key: 'level1' });

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "level" and no URL is given then the Loader will set the URL to be "level.json". It will always add .json as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the Tilemap JSON File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.TilemapJSONFileConfig	Array.<Phaser.Types.Loader.FileTypes.TilemapJSONFileConfig>	No
url	object \| string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json". Or, a well formed JSON object.
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/TilemapJSONFile.js#L61
Since: 3.0.0

unityAtlas

<instance> unityAtlas(key, [textureURL], [atlasURL], [textureXhrSettings], [atlasXhrSettings])

Description:

Adds a Unity YAML based Texture Atlas, or array of atlases, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.unityAtlas('mainmenu', 'images/MainMenu.png', 'images/MainMenu.txt');
}

Phaser expects the atlas data to be provided in a YAML formatted text file as exported from Unity.

Phaser can load all common image types: png, jpg, gif and any other format the browser can natively handle.

Instead of passing arguments you can pass a configuration object, such as:

this.load.unityAtlas({
    key: 'mainmenu',
    textureURL: 'images/MainMenu.png',
    atlasURL: 'images/MainMenu.txt'
});

See the documentation for Phaser.Types.Loader.FileTypes.UnityAtlasFileConfig for more details.

Once the atlas has finished loading you can use frames from it as textures for a Game Object by referencing its key:

this.load.unityAtlas('mainmenu', 'images/MainMenu.png', 'images/MainMenu.json');
// and later in your game ...
this.add.image(x, y, 'mainmenu', 'background');

To get a list of all available frames within an atlas please consult your Texture Atlas software.

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

this.load.unityAtlas('mainmenu', [ 'images/MainMenu.png', 'images/MainMenu-n.png' ], 'images/MainMenu.txt');

Or, if you are using a config object use the normalMap property:

this.load.unityAtlas({
    key: 'mainmenu',
    textureURL: 'images/MainMenu.png',
    normalMap: 'images/MainMenu-n.png',
    atlasURL: 'images/MainMenu.txt'
});

The normal map file is subject to the same conditions as the image file with regard to the path, baseURL, CORs and XHR Settings. Normal maps are a WebGL only feature.

Note: The ability to load this type of file will only be available if the Unity Atlas File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.UnityAtlasFileConfig	Array.<Phaser.Types.Loader.FileTypes.UnityAtlasFileConfig>	No
textureURL	string \| Array.<string>	Yes	The absolute or relative URL to load the texture image file from. If undefined or `null` it will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png".
atlasURL	string	Yes	The absolute or relative URL to load the texture atlas data file from. If undefined or `null` it will be set to `<key>.txt`, i.e. if `key` was "alien" then the URL will be "alien.txt".
textureXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas image file. Used in replacement of the Loaders default XHR Settings.
atlasXhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object for the atlas data file. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/UnityAtlasFile.js#L107
Since: 3.0.0

update

<instance> update()

Description:

Called automatically during the load process.

Source: src/loader/LoaderPlugin.js#L965
Since: 3.10.0

updateProgress

<instance> updateProgress()

Description:

Called automatically during the load process. It updates the progress value and then emits a progress event, which you can use to display a loading bar in your game.

Fires: Phaser.Loader.Events#event:PROGRESS

Source: src/loader/LoaderPlugin.js#L949
Since: 3.0.0

video

<instance> video(key, [urls], [noAudio])

Description:

Adds a Video file, or array of video files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.video('intro', [ 'video/level1.mp4', 'video/level1.webm', 'video/level1.mov' ]);
}

The key must be a unique String. It is used to add the file to the global Video Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the Video Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the Video Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.video({
    key: 'intro',
    url: [ 'video/level1.mp4', 'video/level1.webm', 'video/level1.mov' ],
    noAudio: true
});

See the documentation for Phaser.Types.Loader.FileTypes.VideoFileConfig for more details.

The URLs can be relative or absolute. If the URLs are relative the Loader.baseURL and Loader.path values will be prepended to them.

Due to different browsers supporting different video file types you should usually provide your video files in a variety of formats. mp4, mov and webm are the most common. If you provide an array of URLs then the Loader will determine which one file to load based on browser support, starting with the first in the array and progressing to the end.

Unlike most asset-types, videos do not need to be preloaded. You can create a Video Game Object and then call its loadURL method, to load a video at run-time, rather than in advance.

Note: The ability to load this type of file will only be available if the Video File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	default	description
key	string \| Phaser.Types.Loader.FileTypes.VideoFileConfig	Array.<Phaser.Types.Loader.FileTypes.VideoFileConfig>	No
urls	string \| Array.<string>	Phaser.Types.Loader.FileTypes.VideoFileURLConfig	Array.<Phaser.Types.Loader.FileTypes.VideoFileURLConfig>	Yes
noAudio	boolean	Yes	false	Does the video have an audio track? If not you can enable auto-playing on it.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/VideoFile.js#L113
Since: 3.20.0

xml

<instance> xml(key, [url], [xhrSettings])

Description:

Adds an XML file, or array of XML files, to the current load queue.

You can call this method from within your Scene's preload, along with any other files you wish to load:

function preload ()
{
    this.load.xml('wavedata', 'files/AlienWaveData.xml');
}

The key must be a unique String. It is used to add the file to the global XML Cache upon a successful load. The key should be unique both in terms of files being loaded and files already present in the XML Cache. Loading a file using a key that is already taken will result in a warning. If you wish to replace an existing file then remove it from the XML Cache first, before loading a new one.

Instead of passing arguments you can pass a configuration object, such as:

this.load.xml({
    key: 'wavedata',
    url: 'files/AlienWaveData.xml'
});

See the documentation for Phaser.Types.Loader.FileTypes.XMLFileConfig for more details.

Once the file has finished loading you can access it from its Cache using its key:

this.load.xml('wavedata', 'files/AlienWaveData.xml');
// and later in your game ...
var data = this.cache.xml.get('wavedata');

The URL can be relative or absolute. If the URL is relative the Loader.baseURL and Loader.path values will be prepended to it.

If the URL isn't specified the Loader will take the key and create a filename from that. For example if the key is "data" and no URL is given then the Loader will set the URL to be "data.xml". It will always add .xml as the extension, although this can be overridden if using an object instead of method arguments. If you do not desire this action then provide a URL.

Note: The ability to load this type of file will only be available if the XML File type has been built into Phaser. It is available in the default build but can be excluded from custom builds.

Parameters:

name	type	optional	description
key	string \| Phaser.Types.Loader.FileTypes.XMLFileConfig	Array.<Phaser.Types.Loader.FileTypes.XMLFileConfig>	No
url	string	Yes	The absolute or relative URL to load this file from. If undefined or `null` it will be set to `<key>.xml`, i.e. if `key` was "alien" then the URL will be "alien.xml".
xhrSettings	Phaser.Types.Loader.XHRSettingsObject	Yes	An XHR Settings configuration object. Used in replacement of the Loaders default XHR Settings.

Returns: Phaser.Loader.LoaderPlugin - The Loader instance.

Fires: Phaser.Loader.Events#event:ADD

Source: src/loader/filetypes/XMLFile.js#L92
Since: 3.0.0

Private Methods

boot

<instance> boot()

Description:

This method is called automatically, only once, when the Scene is first created. Do not invoke it directly.

Access: private

Source: src/loader/LoaderPlugin.js#L372
Since: 3.5.1

checkLoadQueue

<instance> checkLoadQueue()

Description:

An internal method called by the Loader.

It will check to see if there are any more files in the pending list that need loading, and if so it will move them from the list Set into the inflight Set, set their CORs flag and start them loading.

It will carrying on doing this for each file in the pending list until it runs out, or hits the max allowed parallel downloads.

Access: private

Source: src/loader/LoaderPlugin.js#L979
Since: 3.7.0

destroy

<instance> destroy()

Description:

The Scene that owns this plugin is being destroyed. We need to shutdown and then kill off all external references.

Access: private

Overrides: Phaser.Events.EventEmitter#destroy

Source: src/loader/LoaderPlugin.js#L1269
Since: 3.0.0

pluginStart

<instance> pluginStart()

Description:

This method is called automatically by the Scene when it is starting up. It is responsible for creating local systems, properties and listening for Scene events. Do not invoke it directly.

Access: private

Source: src/loader/LoaderPlugin.js#L385
Since: 3.5.1

shutdown

<instance> shutdown()

Description:

The Scene that owns this plugin is shutting down. We need to kill and reset all internal properties as well as stop listening to Scene events.

Access: private

Overrides: Phaser.Events.EventEmitter#shutdown

Source: src/loader/LoaderPlugin.js#L1249
Since: 3.0.0

Public Members

baseURL

baseURL: string

Description:

If you want to append a URL before the path of any asset you can set this here.

Useful if allowing the asset base url to be configured outside of the game code.

If you set this property directly then it must end with a "/". Alternatively, call setBaseURL() and it'll do it for you.

Source: src/loader/LoaderPlugin.js#L154
Since: 3.0.0

cacheManager

cacheManager: Phaser.Cache.CacheManager

Description:

A reference to the global Cache Manager.

Source: src/loader/LoaderPlugin.js#L85
Since: 3.7.0

crossOrigin

crossOrigin: string

Description:

The crossOrigin value applied to loaded images. Very often this needs to be set to 'anonymous'.

Source: src/loader/LoaderPlugin.js#L203
Since: 3.0.0

imageLoadType

imageLoadType: string

Description:

Optional load type for image files. XHR is the default. Set to HTMLImageElement to load images using the Image tag instead.

Source: src/loader/LoaderPlugin.js#L212
Since: 3.60.0

inflight

inflight: Phaser.Structs.Set.<Phaser.Loader.File>

Description:

Files are stored in this Set while they're in the process of being loaded.

Upon a successful load they are moved to the queue Set.

By the end of the load process this Set will be empty.

Source: src/loader/LoaderPlugin.js#L270
Since: 3.0.0

list

list: Phaser.Structs.Set.<Phaser.Loader.File>

Description:

Files are placed in this Set when they're added to the Loader via addFile.

They are moved to the inflight Set when they start loading, and assuming a successful load, to the queue Set for further processing.

By the end of the load process this Set will be empty.

Source: src/loader/LoaderPlugin.js#L256
Since: 3.0.0

localSchemes

localSchemes: Array.<string>

Description:

An array of all schemes that the Loader considers as being 'local'.

This is populated by the Phaser.Core.Config#loaderLocalScheme game configuration setting and defaults to [ 'file://', 'capacitor://' ]. Additional local schemes can be added to this array as needed.

Source: src/loader/LoaderPlugin.js#L221
Since: 3.60.0

maxParallelDownloads

maxParallelDownloads: number

Description:

The number of concurrent / parallel resources to try and fetch at once.

Old browsers limit 6 requests per domain; modern ones, especially those with HTTP/2 don't limit it at all.

The default is 32 but you can change this in your Game Config, or by changing this property before the Loader starts.

Source: src/loader/LoaderPlugin.js#L174
Since: 3.0.0

maxRetries

maxRetries: number

Description:

The number of times to retry loading a single file before it fails.

This property is read by the File object when it is created and set to the internal property of the same name. It's not used by the Loader itself.

You can set this value via the Game Config, or you can adjust this property at any point after the Loader has started. However, it will not apply to files that have already been added to the Loader, only those added after this value is changed.

Source: src/loader/LoaderPlugin.js#L350
Since: 3.85.0

path

path: string

Description:

The value of path, if set, is placed before any relative file path given. For example:

this.load.path = "images/sprites/";
this.load.image("ball", "ball.png");
this.load.image("tree", "level1/oaktree.png");
this.load.image("boom", "[http://server.com/explode.png](http://server.com/explode.png)");

Would load the ball file from images/sprites/ball.png and the tree from images/sprites/level1/oaktree.png but the file boom would load from the URL given as it's an absolute URL.

Please note that the path is added before the filename but after the baseURL (if set.)

If you set this property directly then it must end with a "/". Alternatively, call setPath() and it'll do it for you.

Source: src/loader/LoaderPlugin.js#L129
Since: 3.0.0

prefix

prefix: string

Description:

An optional prefix that is automatically prepended to the start of every file key. If prefix was MENU. and you load an image with the key 'Background' the resulting key would be MENU.Background. You can set this directly, or call Loader.setPrefix(). It will then affect every file added to the Loader from that point on. It does not change any file already in the load queue.

Source: src/loader/LoaderPlugin.js#L116
Since: 3.7.0

progress

progress: number

Description:

The progress of the current load queue, as a float value between 0 and 1. This is updated automatically as files complete loading. Note that it is possible for this value to go down again if you add content to the current load queue during a load.

Source: src/loader/LoaderPlugin.js#L244
Since: 3.0.0

queue

queue: Phaser.Structs.Set.<Phaser.Loader.File>

Description:

Files are stored in this Set while they're being processed.

If the process is successful they are moved to their final destination, which could be a Cache or the Texture Manager.

At the end of the load process this Set will be empty.

Source: src/loader/LoaderPlugin.js#L283
Since: 3.0.0

scene

scene: Phaser.Scene

Description:

The Scene which owns this Loader instance.

Source: src/loader/LoaderPlugin.js#L67
Since: 3.0.0

sceneManager

sceneManager: Phaser.Scenes.SceneManager

Description:

A reference to the global Scene Manager.

Access: protected

Source: src/loader/LoaderPlugin.js#L103
Since: 3.16.0

state

state: number

Description:

The current state of the Loader.

Source: src/loader/LoaderPlugin.js#L330
Since: 3.0.0

systems

systems: Phaser.Scenes.Systems

Description:

A reference to the Scene Systems.

Source: src/loader/LoaderPlugin.js#L76
Since: 3.0.0

textureManager

textureManager: Phaser.Textures.TextureManager

Description:

A reference to the global Texture Manager.

Source: src/loader/LoaderPlugin.js#L94
Since: 3.7.0

totalComplete

totalComplete: number

Description:

The total number of files that successfully loaded during the most recent load. This value is reset when you call Loader.start.

Source: src/loader/LoaderPlugin.js#L319
Since: 3.7.0

totalFailed

totalFailed: number

Description:

The total number of files that failed to load during the most recent load. This value is reset when you call Loader.start.

Source: src/loader/LoaderPlugin.js#L308
Since: 3.7.0

totalToLoad

totalToLoad: number

Description:

The total number of files to load. It may not always be accurate because you may add to the Loader during the process of loading, especially if you load a Pack File. Therefore this value can change, but in most cases remains static.

Source: src/loader/LoaderPlugin.js#L233
Since: 3.0.0

xhr

xhr: Phaser.Types.Loader.XHRSettingsObject

Description:

xhr specific global settings (can be overridden on a per-file basis)

Source: src/loader/LoaderPlugin.js#L187
Since: 3.0.0

Private Members

_deleteQueue

_deleteQueue: Phaser.Structs.Set.<Phaser.Loader.File>

Description:

A temporary Set in which files are stored after processing, awaiting destruction at the end of the load process.

Access: private

Source: src/loader/LoaderPlugin.js#L297
Since: 3.7.0

multiKeyIndex

multiKeyIndex: number

Description:

The current index being used by multi-file loaders to avoid key clashes.

Access: private

Source: src/loader/LoaderPlugin.js#L340
Since: 3.20.0