phaser-ce
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Phaser CE (Community Edition) is a fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.
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JavaScript
/* jshint wsh:true */
/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2016 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* The Loader handles loading all external content such as Images, Sounds, Texture Atlases and data files.
*
* The loader uses a combination of tag loading (eg. Image elements) and XHR and provides progress and completion callbacks.
*
* Parallel loading (see {@link #enableParallel}) is supported and enabled by default.
* Load-before behavior of parallel resources is controlled by synchronization points as discussed in {@link #withSyncPoint}.
*
* Texture Atlases can be created with tools such as [Texture Packer](https://www.codeandweb.com/texturepacker/phaser) and
* [Shoebox](http://renderhjs.net/shoebox/)
*
* @class Phaser.Loader
* @param {Phaser.Game} game - A reference to the currently running game.
*/
Phaser.Loader = function (game) {
/**
* Local reference to game.
* @property {Phaser.Game} game
* @protected
*/
this.game = game;
/**
* Local reference to the Phaser.Cache.
* @property {Phaser.Cache} cache
* @protected
*/
this.cache = game.cache;
/**
* If true all calls to Loader.reset will be ignored. Useful if you need to create a load queue before swapping to a preloader state.
* @property {boolean} resetLocked
* @default
*/
this.resetLocked = false;
/**
* True if the Loader is in the process of loading the queue.
* @property {boolean} isLoading
* @default
*/
this.isLoading = false;
/**
* True if all assets in the queue have finished loading.
* @property {boolean} hasLoaded
* @default
*/
this.hasLoaded = false;
/**
* You can optionally link a progress sprite with {@link Phaser.Loader#setPreloadSprite setPreloadSprite}.
*
* This property is an object containing: sprite, rect, direction, width and height
*
* @property {?object} preloadSprite
* @protected
*/
this.preloadSprite = null;
/**
* The crossOrigin value applied to loaded images. Very often this needs to be set to 'anonymous'.
* @property {boolean|string} crossOrigin
* @default
*/
this.crossOrigin = false;
/**
* 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.
* The string _must_ end with a "/".
*
* @property {string} baseURL
*/
this.baseURL = '';
/**
* The value of `path`, if set, is placed before any _relative_ file path given. For example:
*
* `load.path = "images/sprites/";
* load.image("ball", "ball.png");
* load.image("tree", "level1/oaktree.png");
* load.image("boom", "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.)
*
* The string _must_ end with a "/".
*
* @property {string} path
*/
this.path = '';
/**
* Used to map the application mime-types to to the Accept header in XHR requests.
* If you don't require these mappings, or they cause problems on your server, then
* remove them from the headers object and the XHR request will not try to use them.
*
* This object can also be used to set the `X-Requested-With` header to
* `XMLHttpRequest` (or any other value you need). To enable this do:
*
* `this.load.headers.requestedWith = 'XMLHttpRequest'`
*
* before adding anything to the Loader. The XHR loader will then call:
*
* `setRequestHeader('X-Requested-With', this.headers['requestedWith'])`
*
* @property {object} headers
* @default
*/
this.headers = {
"requestedWith": false,
"json": "application/json",
"xml": "application/xml"
};
/**
* This event is dispatched when the loading process starts: before the first file has been requested,
* but after all the initial packs have been loaded.
*
* @property {Phaser.Signal} onLoadStart
*/
this.onLoadStart = new Phaser.Signal();
/**
* This event is dispatched when the final file in the load queue has either loaded or failed.
*
* @property {Phaser.Signal} onLoadComplete
*/
this.onLoadComplete = new Phaser.Signal();
/**
* This event is dispatched when an asset pack has either loaded or failed to load.
*
* This is called when the asset pack manifest file has loaded and successfully added its contents to the loader queue.
*
* Params: `(pack key, success?, total packs loaded, total packs)`
*
* @property {Phaser.Signal} onPackComplete
*/
this.onPackComplete = new Phaser.Signal();
/**
* This event is dispatched immediately before a file starts loading.
* It's possible the file may fail (eg. download error, invalid format) after this event is sent.
*
* Params: `(progress, file key, file url)`
*
* @property {Phaser.Signal} onFileStart
*/
this.onFileStart = new Phaser.Signal();
/**
* This event is dispatched when a file has either loaded or failed to load.
*
* Any function bound to this will receive the following parameters:
*
* progress, file key, success?, total loaded files, total files
*
* Where progress is a number between 1 and 100 (inclusive) representing the percentage of the load.
*
* @property {Phaser.Signal} onFileComplete
*/
this.onFileComplete = new Phaser.Signal();
/**
* This event is dispatched when a file (or pack) errors as a result of the load request.
*
* For files it will be triggered before `onFileComplete`. For packs it will be triggered before `onPackComplete`.
*
* Params: `(file key, file)`
*
* @property {Phaser.Signal} onFileError
*/
this.onFileError = new Phaser.Signal();
/**
* If true and if the browser supports XDomainRequest, it will be used in preference for XHR.
*
* This is only relevant for IE 9 and should _only_ be enabled for IE 9 clients when required by the server/CDN.
*
* @property {boolean} useXDomainRequest
* @deprecated This is only relevant for IE 9.
*/
this.useXDomainRequest = false;
/**
* @private
* @property {boolean} _warnedAboutXDomainRequest - Control number of warnings for using XDR outside of IE 9.
*/
this._warnedAboutXDomainRequest = false;
/**
* If true (the default) then parallel downloading will be enabled.
*
* To disable all parallel downloads this must be set to false prior to any resource being loaded.
*
* @property {boolean} enableParallel
*/
this.enableParallel = true;
/**
* The number of concurrent / parallel resources to try and fetch at once.
*
* Many current browsers limit 6 requests per domain; this is slightly conservative.
*
* This should generally be left at the default, but can be set to a higher limit for specific use-cases. Just be careful when setting large values as different browsers could behave differently.
*
* @property {integer} maxParallelDownloads
*/
this.maxParallelDownloads = 4;
/**
* A counter: if more than zero, files will be automatically added as a synchronization point.
* @property {integer} _withSyncPointDepth;
*/
this._withSyncPointDepth = 0;
/**
* Contains all the information for asset files (including packs) to load.
*
* File/assets are only removed from the list after all loading completes.
*
* @property {file[]} _fileList
* @private
*/
this._fileList = [];
/**
* Inflight files (or packs) that are being fetched/processed.
*
* This means that if there are any files in the flight queue there should still be processing
* going on; it should only be empty before or after loading.
*
* The files in the queue may have additional properties added to them,
* including `requestObject` which is normally the associated XHR.
*
* @property {file[]} _flightQueue
* @private
*/
this._flightQueue = [];
/**
* The offset into the fileList past all the complete (loaded or error) entries.
*
* @property {integer} _processingHead
* @private
*/
this._processingHead = 0;
/**
* True when the first file (not pack) has loading started.
* This used to to control dispatching `onLoadStart` which happens after any initial packs are loaded.
*
* @property {boolean} _initialPacksLoaded
* @private
*/
this._fileLoadStarted = false;
/**
* Total packs seen - adjusted when a pack is added.
* @property {integer} _totalPackCount
* @private
*/
this._totalPackCount = 0;
/**
* Total files seen - adjusted when a file is added.
* @property {integer} _totalFileCount
* @private
*/
this._totalFileCount = 0;
/**
* Total packs loaded - adjusted just prior to `onPackComplete`.
* @property {integer} _loadedPackCount
* @private
*/
this._loadedPackCount = 0;
/**
* Total files loaded - adjusted just prior to `onFileComplete`.
* @property {integer} _loadedFileCount
* @private
*/
this._loadedFileCount = 0;
};
/**
* @constant
* @type {number}
*/
Phaser.Loader.TEXTURE_ATLAS_JSON_ARRAY = 0;
/**
* @constant
* @type {number}
*/
Phaser.Loader.TEXTURE_ATLAS_JSON_HASH = 1;
/**
* @constant
* @type {number}
*/
Phaser.Loader.TEXTURE_ATLAS_XML_STARLING = 2;
/**
* @constant
* @type {number}
*/
Phaser.Loader.PHYSICS_LIME_CORONA_JSON = 3;
/**
* @constant
* @type {number}
*/
Phaser.Loader.PHYSICS_PHASER_JSON = 4;
/**
* @constant
* @type {number}
*/
Phaser.Loader.TEXTURE_ATLAS_JSON_PYXEL = 5;
Phaser.Loader.prototype = {
/**
* Set a Sprite to be a "preload" sprite by passing it to this method.
*
* A "preload" sprite will have its width or height crop adjusted based on the percentage of the loader in real-time.
* This allows you to easily make loading bars for games.
*
* The sprite will automatically be made visible when calling this.
*
* @method Phaser.Loader#setPreloadSprite
* @param {Phaser.Sprite|Phaser.Image} sprite - The sprite or image that will be cropped during the load.
* @param {number} [direction=0] - A value of zero means the sprite will be cropped horizontally, a value of 1 means its will be cropped vertically.
*/
setPreloadSprite: function (sprite, direction) {
direction = direction || 0;
this.preloadSprite = { sprite: sprite, direction: direction, width: sprite.width, height: sprite.height, rect: null };
if (direction === 0)
{
// Horizontal rect
this.preloadSprite.rect = new Phaser.Rectangle(0, 0, 1, sprite.height);
}
else
{
// Vertical rect
this.preloadSprite.rect = new Phaser.Rectangle(0, 0, sprite.width, 1);
}
sprite.crop(this.preloadSprite.rect);
sprite.visible = true;
},
/**
* Called automatically by ScaleManager when the game resizes in RESIZE scalemode.
*
* This can be used to adjust the preloading sprite size, eg.
*
* @method Phaser.Loader#resize
* @protected
*/
resize: function () {
if (this.preloadSprite && this.preloadSprite.height !== this.preloadSprite.sprite.height)
{
this.preloadSprite.rect.height = this.preloadSprite.sprite.height;
}
},
/**
* Check whether a file/asset with a specific key is queued to be loaded.
*
* To access a loaded asset use Phaser.Cache, eg. {@link Phaser.Cache#checkImageKey}
*
* @method Phaser.Loader#checkKeyExists
* @param {string} type - The type asset you want to check.
* @param {string} key - Key of the asset you want to check.
* @return {boolean} Return true if exists, otherwise return false.
*/
checkKeyExists: function (type, key) {
return this.getAssetIndex(type, key) > -1;
},
/**
* Get the queue-index of the file/asset with a specific key.
*
* Only assets in the download file queue will be found.
*
* @method Phaser.Loader#getAssetIndex
* @param {string} type - The type asset you want to check.
* @param {string} key - Key of the asset you want to check.
* @return {number} The index of this key in the filelist, or -1 if not found.
* The index may change and should only be used immediately following this call
*/
getAssetIndex: function (type, key) {
var bestFound = -1;
for (var i = 0; i < this._fileList.length; i++)
{
var file = this._fileList[i];
if (file.type === type && file.key === key)
{
bestFound = i;
// An already loaded/loading file may be superceded.
if (!file.loaded && !file.loading)
{
break;
}
}
}
return bestFound;
},
/**
* Find a file/asset with a specific key.
*
* Only assets in the download file queue will be found.
*
* @method Phaser.Loader#getAsset
* @param {string} type - The type asset you want to check.
* @param {string} key - Key of the asset you want to check.
* @return {any} Returns an object if found that has 2 properties: `index` and `file`; otherwise a non-true value is returned.
* The index may change and should only be used immediately following this call.
*/
getAsset: function (type, key) {
var fileIndex = this.getAssetIndex(type, key);
if (fileIndex > -1)
{
return { index: fileIndex, file: this._fileList[fileIndex] };
}
return false;
},
/**
* Reset the loader and clear any queued assets. If `Loader.resetLocked` is true this operation will abort.
*
* This will abort any loading and clear any queued assets.
*
* Optionally you can clear any associated events.
*
* @method Phaser.Loader#reset
* @protected
* @param {boolean} [hard=false] - If true then the preload sprite and other artifacts may also be cleared.
* @param {boolean} [clearEvents=false] - If true then the all Loader signals will have removeAll called on them.
*/
reset: function (hard, clearEvents) {
if (clearEvents === undefined) { clearEvents = false; }
if (this.resetLocked)
{
return;
}
if (hard)
{
this.preloadSprite = null;
}
this.isLoading = false;
this._processingHead = 0;
this._fileList.length = 0;
this._flightQueue.length = 0;
this._fileLoadStarted = false;
this._totalFileCount = 0;
this._totalPackCount = 0;
this._loadedPackCount = 0;
this._loadedFileCount = 0;
if (clearEvents)
{
this.onLoadStart.removeAll();
this.onLoadComplete.removeAll();
this.onPackComplete.removeAll();
this.onFileStart.removeAll();
this.onFileComplete.removeAll();
this.onFileError.removeAll();
}
},
/**
* Internal function that adds a new entry to the file list. Do not call directly.
*
* @method Phaser.Loader#addToFileList
* @protected
* @param {string} type - The type of resource to add to the list (image, audio, xml, etc).
* @param {string} key - The unique Cache ID key of this resource.
* @param {string} [url] - The URL the asset will be loaded from.
* @param {object} [properties=(none)] - Any additional properties needed to load the file. These are added directly to the added file object and overwrite any defaults.
* @param {boolean} [overwrite=false] - If true then this will overwrite a file asset of the same type/key. Otherwise it will only add a new asset. If overwrite is true, and the asset is already being loaded (or has been loaded), then it is appended instead.
* @param {string} [extension] - If no URL is given the Loader will sometimes auto-generate the URL based on the key, using this as the extension.
* @return {Phaser.Loader} This instance of the Phaser Loader.
*/
addToFileList: function (type, key, url, properties, overwrite, extension) {
if (overwrite === undefined) { overwrite = false; }
if (key === undefined || key === '')
{
console.warn("Phaser.Loader: Invalid or no key given of type " + type);
return this;
}
if (url === undefined || url === null)
{
if (extension)
{
url = key + extension;
}
else
{
console.warn("Phaser.Loader: No URL given for file type: " + type + " key: " + key);
return this;
}
}
var file = {
type: type,
key: key,
path: this.path,
url: url,
syncPoint: this._withSyncPointDepth > 0,
data: null,
loading: false,
loaded: false,
error: false
};
if (properties)
{
for (var prop in properties)
{
file[prop] = properties[prop];
}
}
var fileIndex = this.getAssetIndex(type, key);
if (overwrite && fileIndex > -1)
{
var currentFile = this._fileList[fileIndex];
if (!currentFile.loading && !currentFile.loaded)
{
this._fileList[fileIndex] = file;
}
else
{
this._fileList.push(file);
this._totalFileCount++;
}
}
else if (fileIndex === -1)
{
this._fileList.push(file);
this._totalFileCount++;
}
return this;
},
/**
* Internal function that replaces an existing entry in the file list with a new one. Do not call directly.
*
* @method Phaser.Loader#replaceInFileList
* @protected
* @param {string} type - The type of resource to add to the list (image, audio, xml, etc).
* @param {string} key - The unique Cache ID key of this resource.
* @param {string} url - The URL the asset will be loaded from.
* @param {object} properties - Any additional properties needed to load the file.
*/
replaceInFileList: function (type, key, url, properties) {
return this.addToFileList(type, key, url, properties, true);
},
/**
* Add a JSON resource pack ('packfile') to the Loader.
*
* A packfile is a JSON file that contains a list of assets to the be loaded.
* Please see the example 'loader/asset pack' in the Phaser Examples repository.
*
* Packs are always put before the first non-pack file that is not loaded / loading.
*
* This means that all packs added before any loading has started are added to the front
* of the file queue, in the order added.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* The URL of the packfile can be relative or absolute. If the URL is relative the `Loader.baseURL` and `Loader.path` values will be prepended to it.
*
* @method Phaser.Loader#pack
* @param {string} key - Unique asset key of this resource pack.
* @param {string} [url] - URL of the Asset Pack JSON file. If you wish to pass a json object instead set this to null and pass the object as the data parameter.
* @param {object} [data] - The Asset Pack JSON data. Use this to pass in a json data object rather than loading it from a URL. TODO
* @param {object} [callbackContext=(loader)] - Some Loader operations, like Binary and Script require a context for their callbacks. Pass the context here.
* @return {Phaser.Loader} This Loader instance.
*/
pack: function (key, url, data, callbackContext) {
if (url === undefined) { url = null; }
if (data === undefined) { data = null; }
if (callbackContext === undefined) { callbackContext = null; }
if (!url && !data)
{
console.warn('Phaser.Loader.pack - Both url and data are null. One must be set.');
return this;
}
var pack = {
type: 'packfile',
key: key,
url: url,
path: this.path,
syncPoint: true,
data: null,
loading: false,
loaded: false,
error: false,
callbackContext: callbackContext
};
// A data object has been given
if (data)
{
if (typeof data === 'string')
{
data = JSON.parse(data);
}
pack.data = data || {};
// Already consider 'loaded'
pack.loaded = true;
}
// Add before first non-pack/no-loaded ~ last pack from start prior to loading
// (Read one past for splice-to-end)
for (var i = 0; i < this._fileList.length + 1; i++)
{
var file = this._fileList[i];
if (!file || (!file.loaded && !file.loading && file.type !== 'packfile'))
{
this._fileList.splice(i, 0, pack);
this._totalPackCount++;
break;
}
}
return this;
},
/**
* Adds an Image to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* 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 Phaser.Cache upon successful load.
*
* Retrieve the image via `Cache.getImage(key)`
*
* 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.
* If you do not desire this action then provide a URL.
*
* This method also supports passing in a texture object as the `url` argument. This allows you to load
* compressed textures into Phaser. You can also use `Loader.texture` to do this.
*
* Compressed Textures are a WebGL only feature, and require 3rd party tools to create.
* Available tools include Texture Packer, PVRTexTool, DirectX Texture Tool and Mali Texture Compression Tool.
*
* Supported texture compression formats are: PVRTC, S3TC and ETC1.
* Supported file formats are: PVR, DDS, KTX and PKM.
*
* The formats that support all 3 compression algorithms are PVR and KTX.
* PKM only supports ETC1, and DDS only S3TC for now.
*
* The texture path object looks like this:
*
* ```javascript
* load.image('factory', {
* etc1: 'assets/factory_etc1.pkm',
* s3tc: 'assets/factory_dxt1.pvr',
* pvrtc: 'assets/factory_pvrtc.pvr',
* truecolor: 'assets/factory.png'
* });
* ```
*
* The `truecolor` property points to a standard PNG file, that will be used if none of the
* compressed formats are supported by the browser / GPU.
*
* @method Phaser.Loader#image
* @param {string} key - Unique asset key of this image file.
* @param {string|object} [url] - URL of an image file. If undefined or `null` the url will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png". Can also be a texture data object.
* @param {boolean} [overwrite=false] - If an unloaded file with a matching key already exists in the queue, this entry will overwrite it.
* @return {Phaser.Loader} This Loader instance.
*/
image: function (key, url, overwrite) {
if (typeof url === 'object')
{
return this.texture(key, url, overwrite);
}
else
{
return this.addToFileList('image', key, url, undefined, overwrite, '.png');
}
},
/**
* Generate an image from a BitmapData object and add it to the current load queue.
*
* @method Phaser.Loader#imageFromBitmapData
* @param {string} key - Unique asset key for the generated image.
* @param {Phaser.BitmapData} bitmapData
* @param {boolean} [overwrite=false] - If an unloaded file with a matching key already exists in the queue, this entry will overwrite it.
* @return {Phaser.Loader} This Loader instance.
*/
imageFromBitmapData: function (key, bitmapData, overwrite) {
return this.image(key, bitmapData.canvas.toDataURL('image/png'), overwrite);
},
/**
* Adds a Compressed Texture Image to the current load queue.
*
* Compressed Textures are a WebGL only feature, and require 3rd party tools to create.
* Available tools include Texture Packer, PVRTexTool, DirectX Texture Tool and Mali Texture Compression Tool.
*
* Supported texture compression formats are: PVRTC, S3TC and ETC1.
* Supported file formats are: PVR, DDS, KTX and PKM.
*
* The formats that support all 3 compression algorithms are PVR and KTX.
* PKM only supports ETC1, and DDS only S3TC for now.
*
* The texture path object looks like this:
*
* ```javascript
* load.texture('factory', {
* etc1: 'assets/factory_etc1.pkm',
* s3tc: 'assets/factory_dxt1.pvr',
* pvrtc: 'assets/factory_pvrtc.pvr',
* truecolor: 'assets/factory.png'
* });
* ```
*
* The `truecolor` property points to a standard PNG file, that will be used if none of the
* compressed formats are supported by the browser / GPU.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* Retrieve the image via `Cache.getImage(key)`
*
* 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.pvr". It will always add `.pvr` as the extension.
* If you do not desire this action then provide a URL.
*
* @method Phaser.Loader#texture
* @param {string} key - Unique asset key of this image file.
* @param {object} object - The texture path data object.
* @param {boolean} [overwrite=false] - If an unloaded file with a matching key already exists in the queue, this entry will overwrite it.
* @return {Phaser.Loader} This Loader instance.
*/
texture: function (key, object, overwrite) {
if (this.game.renderType === Phaser.WEBGL)
{
var compression = this.game.renderer.extensions.compression;
var exkey;
for (exkey in object)
{
if (exkey.toUpperCase() in compression)
{
return this.addToFileList('texture', key, object[exkey], undefined, overwrite, '.pvr');
}
}
}
// Check if we have a truecolor texture to fallback.
// Also catches calls to this function that are from a Canvas renderer
if (object['truecolor'])
{
this.addToFileList('image', key, object['truecolor'], undefined, overwrite, '.png');
}
return this;
},
/**
* Adds an array of images to the current load queue.
*
* It works by passing each element of the array to the Loader.image method.
*
* The files are **not** loaded immediately after calling this method. The files are added to the queue ready to be loaded when the loader starts.
*
* Phaser can load all common image types: png, jpg, gif and any other format the browser can natively handle.
*
* The keys must be unique Strings. They are used to add the files to the Phaser.Cache upon successful load.
*
* Retrieve the images via `Cache.getImage(key)`
*
* 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.
* If you do not desire this action then provide a URL.
*
* @method Phaser.Loader#images
* @param {array} keys - An array of unique asset keys of the image files.
* @param {array} [urls] - Optional array of URLs. If undefined or `null` the url will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png". If provided the URLs array length must match the keys array length.
* @return {Phaser.Loader} This Loader instance.
*/
images: function (keys, urls) {
if (Array.isArray(urls))
{
for (var i = 0; i < keys.length; i++)
{
this.image(keys[i], urls[i]);
}
}
else
{
for (var i = 0; i < keys.length; i++)
{
this.image(keys[i]);
}
}
return this;
},
/**
* Adds a Text file to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* Retrieve the file via `Cache.getText(key)`
*
* 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.txt". It will always add `.txt` as the extension.
* If you do not desire this action then provide a URL.
*
* @method Phaser.Loader#text
* @param {string} key - Unique asset key of the text file.
* @param {string} [url] - URL of the text file. If undefined or `null` the url will be set to `<key>.txt`, i.e. if `key` was "alien" then the URL will be "alien.txt".
* @param {boolean} [overwrite=false] - If an unloaded file with a matching key already exists in the queue, this entry will overwrite it.
* @return {Phaser.Loader} This Loader instance.
*/
text: function (key, url, overwrite) {
return this.addToFileList('text', key, url, undefined, overwrite, '.txt');
},
/**
* Adds a JSON file to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* Retrieve the file via `Cache.getJSON(key)`. JSON files are automatically parsed upon load.
* If you need to control when the JSON is parsed then use `Loader.text` instead and parse the text file as needed.
*
* 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.json". It will always add `.json` as the extension.
* If you do not desire this action then provide a URL.
*
* @method Phaser.Loader#json
* @param {string} key - Unique asset key of the json file.
* @param {string} [url] - URL of the JSON file. If undefined or `null` the url will be set to `<key>.json`, i.e. if `key` was "alien" then the URL will be "alien.json".
* @param {boolean} [overwrite=false] - If an unloaded file with a matching key already exists in the queue, this entry will overwrite it.
* @return {Phaser.Loader} This Loader instance.
*/
json: function (key, url, overwrite) {
return this.addToFileList('json', key, url, undefined, overwrite, '.json');
},
/**
* Adds a fragment shader file to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* Retrieve the file via `Cache.getShader(key)`.
*
* 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 "blur"
* and no URL is given then the Loader will set the URL to be "blur.frag". It will always add `.frag` as the extension.
* If you do not desire this action then provide a URL.
*
* @method Phaser.Loader#shader
* @param {string} key - Unique asset key of the fragment file.
* @param {string} [url] - URL of the fragment file. If undefined or `null` the url will be set to `<key>.frag`, i.e. if `key` was "blur" then the URL will be "blur.frag".
* @param {boolean} [overwrite=false] - If an unloaded file with a matching key already exists in the queue, this entry will overwrite it.
* @return {Phaser.Loader} This Loader instance.
*/
shader: function (key, url, overwrite) {
return this.addToFileList('shader', key, url, undefined, overwrite, '.frag');
},
/**
* Adds an XML file to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* Retrieve the file via `Cache.getXML(key)`.
*
* 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.xml". It will always add `.xml` as the extension.
* If you do not desire this action then provide a URL.
*
* @method Phaser.Loader#xml
* @param {string} key - Unique asset key of the xml file.
* @param {string} [url] - URL of the XML file. If undefined or `null` the url will be set to `<key>.xml`, i.e. if `key` was "alien" then the URL will be "alien.xml".
* @param {boolean} [overwrite=false] - If an unloaded file with a matching key already exists in the queue, this entry will overwrite it.
* @return {Phaser.Loader} This Loader instance.
*/
xml: function (key, url, overwrite) {
return this.addToFileList('xml', key, url, undefined, overwrite, '.xml');
},
/**
* Adds a JavaScript file to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String.
*
* 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.
* If you do not desire this action then provide a URL.
*
* Upon successful load the JavaScript is automatically turned into a script tag and executed, so be careful what you load!
*
* A callback, which will be invoked as the script tag has been created, can also be specified.
* The callback must return relevant `data`.
*
* @method Phaser.Loader#script
* @param {string} key - Unique asset key of the script file.
* @param {string} [url] - URL of the JavaScript file. If undefined or `null` the url will be set to `<key>.js`, i.e. if `key` was "alien" then the URL will be "alien.js".
* @param {function} [callback=(none)] - Optional callback that will be called after the script tag has loaded, so you can perform additional processing.
* @param {object} [callbackContext=(loader)] - The context under which the callback will be applied. If not specified it will use the Phaser Loader as the context.
* @return {Phaser.Loader} This Loader instance.
*/
script: function (key, url, callback, callbackContext) {
if (callback === undefined) { callback = false; }
if (callback !== false && callbackContext === undefined) { callbackContext = this; }
return this.addToFileList('script', key, url, { syncPoint: true, callback: callback, callbackContext: callbackContext }, false, '.js');
},
/**
* Adds a binary file to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* Retrieve the file via `Cache.getBinary(key)`.
*
* 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.bin". It will always add `.bin` as the extension.
* If you do not desire this action then provide a URL.
*
* It will be loaded via xhr with a responseType of "arraybuffer". You can specify an optional callback to process the file after load.
* When the callback is called it will be passed 2 parameters: the key of the file and the file data.
*
* WARNING: If a callback is specified the data will be set to whatever it returns. Always return the data object, even if you didn't modify it.
*
* @method Phaser.Loader#binary
* @param {string} key - Unique asset key of the binary file.
* @param {string} [url] - URL of the binary file. If undefined or `null` the url will be set to `<key>.bin`, i.e. if `key` was "alien" then the URL will be "alien.bin".
* @param {function} [callback=(none)] - Optional callback that will be passed the file after loading, so you can perform additional processing on it.
* @param {object} [callbackContext] - The context under which the callback will be applied. If not specified it will use the callback itself as the context.
* @return {Phaser.Loader} This Loader instance.
*/
binary: function (key, url, callback, callbackContext) {
if (callback === undefined) { callback = false; }
// Why is the default callback context the ..callback?
if (callback !== false && callbackContext === undefined) { callbackContext = callback; }
return this.addToFileList('binary', key, url, { callback: callback, callbackContext: callbackContext }, false, '.bin');
},
/**
* Adds a Sprite Sheet to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* To clarify the terminology that Phaser uses: A Sprite Sheet is an image containing frames, usually of an animation, that are all equal
* dimensions and often in sequence. For example if the frame size is 32x32 then every frame in the sprite sheet will be that size.
* Sometimes (outside of Phaser) the term "sprite sheet" is used to refer to a texture atlas.
* A Texture Atlas works by packing together images as best it can, using whatever frame sizes it likes, often with cropping and trimming
* the frames in the process. Software such as Texture Packer, Flash CC or Shoebox all generate texture atlases, not sprite sheets.
* If you've got an atlas then use `Loader.atlas` instead.
*
* The key must be a unique String. It is used to add the image to the Phaser.Cache upon successful load.
*
* Retrieve the file via `Cache.getImage(key)`. Sprite sheets, being image based, live in the same Cache as all other Images.
*
* 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.
* If you do not desire this action then provide a URL.
*
* @method Phaser.Loader#spritesheet
* @param {string} key - Unique asset key of the sheet file.
* @param {string} url - URL of the sprite sheet file. If undefined or `null` the url will be set to `<key>.png`, i.e. if `key` was "alien" then the URL will be "alien.png".
* @param {number} frameWidth - Width in pixels of a single frame in the sprite sheet.
* @param {number} frameHeight - Height in pixels of a single frame in the sprite sheet.
* @param {number} [frameMax=-1] - How many frames in this sprite sheet. If not specified it will divide the whole image into frames.
* @param {number} [margin=0] - If the frames have been drawn with a margin, specify the amount here.
* @param {number} [spacing=0] - If the frames have been drawn with spacing between them, specify the amount here.
* @param {number} [skipFrames=0] - Skip a number of frames. Useful when there are multiple sprite sheets in one image.
* @return {Phaser.Loader} This Loader instance.
*/
spritesheet: function (key, url, frameWidth, frameHeight, frameMax, margin, spacing, skipFrames) {
if (frameMax === undefined) { frameMax = -1; }
if (margin === undefined) { margin = 0; }
if (spacing === undefined) { spacing = 0; }
if (skipFrames === undefined) { skipFrames = 0; }
return this.addToFileList('spritesheet', key, url, { frameWidth: frameWidth, frameHeight: frameHeight, frameMax: frameMax, margin: margin, spacing: spacing, skipFrames: skipFrames }, false, '.png');
},
/**
* Adds an audio file to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* Retrieve the file via `Cache.getSound(key)`.
*
* The URL can be relative or absolute. If the URL is relative the `Loader.baseURL` and `Loader.path` values will be prepended to it.
*
* Mobile warning: There are some mobile devices (certain iPad 2 and iPad Mini revisions) that cannot play 48000 Hz audio.
* When they try to play the audio becomes extremely distorted and buzzes, eventually crashing the sound system.
* The solution is to use a lower encoding rate such as 44100 Hz.
*
* @method Phaser.Loader#audio
* @param {string} key - Unique asset key of the audio file.
* @param {string|string[]|object[]} urls - Either a single string or an array of URIs or pairs of `{uri: .., type: ..}`.
* If an array is specified then the first URI (or URI + mime pair) that is device-compatible will be selected.
* For example: `"jump.mp3"`, `['jump.mp3', 'jump.ogg', 'jump.m4a']`, or `[{uri: "data:<opus_resource>", type: 'opus'}, 'fallback.mp3']`.
* BLOB and DATA URIs can be used but only support automatic detection when used in the pair form; otherwise the format must be manually checked before adding the resource.
* @param {boolean} [autoDecode=true] - When using Web Audio the audio files can either be decoded at load time or run-time.
* Audio files can't be played until they are decoded and, if specified, this enables immediate decoding. Decoding is a non-blocking async process, however it consumes huge amounts of CPU time on mobiles especially.
* @return {Phaser.Loader} This Loader instance.
*/
audio: function (key, urls, autoDecode) {
if (this.game.sound.noAudio)
{
return this;
}
if (autoDecode === undefined) { autoDecode = true; }
if (typeof urls === 'string')
{
urls = [urls];
}
return this.addToFileList('audio', key, urls, { buffer: null, autoDecode: autoDecode });
},
/**
* Adds an audio sprite file to the current load queue.
*
* The file is **not** loaded immediately after calling this method. The file is added to the queue ready to be loaded when the loader starts.
*
* The key must be a unique String. It is used to add the file to the Phaser.Cache upon successful load.
*
* 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
*
* Retrieve the file via `Cache.getSoundData(key)`.
*
* The URL can be relative or absolute. If the URL is relative the `Loader.baseURL` and `Loader.path` values will be prepended to it.
*
* @method Phaser.Loader#audioSprite
* @param {string} key - Unique asset key of the audio file.
* @param {Array|string} urls - An array containing the URLs of the audio files, i.e.: [ 'audiosprite.mp3', 'audiosprite.ogg', 'audiosprite.m4a' ] or a single string containing just one URL.
* @param {string} [jsonURL=null] - The URL of the audiosprite configuration JSON object. If you wish to pass the data directly set this parameter to null.
* @param {string|object} [jsonData=null] - A JSON object or string containing the audiosprite configuration data. This is ignored if jsonURL is not null.
* @param {boolean} [autoDecode=true] - When using Web Audio the audio files can either be decoded at load time or run-time.
* Audio files can't be played until they are decoded and, if specified, this enables immediate decoding. Decoding is a non-blocking async process, however it consumes huge amounts of CPU time on mobiles especially.
* @return {Phaser.Loader} This Loader instance.
*/
audioSprite: function (key, urls, jsonURL, jsonData, autoDecode) {
if (this.game.sound.noAudio)
{
return this;
}
if (jsonURL === undefined) { jsonURL = null; }
if (jsonData === undefined) { jsonData = null; }
if (autoDecode === undefined) { autoDecode = true; }
this.audio(key, urls, autoDecode);
if (jsonURL)
{
this.json(key + '-audioatlas', jsonURL);
}
else if (jsonData)
{
if (typeof jsonData === 'string')
{
jsonData = JSON.parse(jsonData);
}
this.cache.addJSON(key + '-audioatlas', '', jsonData);
}
else
{
console.warn('Phaser.Loader.audiosprite - You must specify either a jsonURL or provide a jsonData object');
}
return this