const assets = [
    new Asset('model', 'container', { url: `http://example.com/asset.glb` }),
    new Asset('styling', 'css', { url: `http://example.com/asset.css` })
];
const assetListLoader = new AssetListLoader(assets, app.assets);
assetListLoader.load((err, failed) => {
    if (err) {
        console.error(`${failed.length} assets failed to load`);
    } else {
        console.log(`${assets.length} assets loaded`);
   }
});

const assetListLoader = new pc.AssetListLoader([
    new pc.Asset("texture1", "texture", { url: 'http://example.com/my/assets/here/texture1.png') }),
    new pc.Asset("texture2", "texture", { url: 'http://example.com/my/assets/here/texture2.png') })
], pc.app.assets);

AssetListLoader(assetList, assetRegistry) 

Create a new AssetListLoader using a list of assets to load and the asset registry used to load and manage them.

const assetListLoader = new pc.AssetListLoader([
    new pc.Asset("texture1", "texture", { url: 'http://example.com/my/assets/here/texture1.png') }),
    new pc.Asset("texture2", "texture", { url: 'http://example.com/my/assets/here/texture2.png') })
], pc.app.assets);

Parameters

assetList	Asset[], number[]	An array of Asset objects to load or an array of Asset IDs to load.
assetRegistry	AssetRegistry	The application's asset registry.

destroy() 

Removes all references to this asset list loader.

load(done, [scope]) 

Start loading asset list, call done() when all assets have loaded or failed to load.

Parameters

done	function	Callback called when all assets in the list are loaded. Passed (err, failed) where err is the undefined if no errors are encountered and failed contains a list of assets that failed to load.
scope	object	Scope to use when calling callback.

ready(done, [scope]) 

Sets a callback which will be called when all assets in the list have been loaded.

Parameters

done	function	Callback called when all assets in the list are loaded.
scope	object	Scope to use when calling callback.

fire(name, [arg1], [arg2], [arg3], [arg4], [arg5], [arg6], [arg7], [arg8]) 

Fire an event, all additional arguments are passed on to the event listener.

obj.fire('test', 'This is the message');

Parameters

name	string	Name of event to fire.
arg1	*	First argument that is passed to the event handler.
arg2	*	Second argument that is passed to the event handler.
arg3	*	Third argument that is passed to the event handler.
arg4	*	Fourth argument that is passed to the event handler.
arg5	*	Fifth argument that is passed to the event handler.
arg6	*	Sixth argument that is passed to the event handler.
arg7	*	Seventh argument that is passed to the event handler.
arg8	*	Eighth argument that is passed to the event handler.

Returns

EventHandler

Self for chaining.

hasEvent(name) 

Test if there are any handlers bound to an event name.

obj.on('test', function () { }); // bind an event to 'test'
obj.hasEvent('test'); // returns true
obj.hasEvent('hello'); // returns false

Parameters

name

string

The name of the event to test.

Returns

boolean

True if the object has handlers bound to the specified event name.

off([name], [callback], [scope]) 

Detach an event handler from an event. If callback is not provided then all callbacks are unbound from the event, if scope is not provided then all events with the callback will be unbound.

const handler = function () {
};
obj.on('test', handler);

obj.off(); // Removes all events
obj.off('test'); // Removes all events called 'test'
obj.off('test', handler); // Removes all handler functions, called 'test'
obj.off('test', handler, this); // Removes all handler functions, called 'test' with scope this

Parameters

name	string	Name of the event to unbind.
callback	HandleEventCallback	Function to be unbound.
scope	object	Scope that was used as the this when the event is fired.

Returns

EventHandler

Self for chaining.

on(name, callback, [scope]) 

Attach an event handler to an event.

obj.on('test', function (a, b) {
    console.log(a + b);
});
obj.fire('test', 1, 2); // prints 3 to the console

const evt = obj.on('test', function (a, b) {
    console.log(a + b);
});
// some time later
evt.off();

Parameters

name	string	Name of the event to bind the callback to.
callback	HandleEventCallback	Function that is called when event is fired. Note the callback is limited to 8 arguments.
scope	object	Object to use as 'this' when the event is fired, defaults to current this.

Returns

EventHandle

Can be used for removing event in the future.

once(name, callback, [scope]) 

Attach an event handler to an event. This handler will be removed after being fired once.

obj.once('test', function (a, b) {
    console.log(a + b);
});
obj.fire('test', 1, 2); // prints 3 to the console
obj.fire('test', 1, 2); // not going to get handled

Parameters

name	string	Name of the event to bind the callback to.
callback	HandleEventCallback	Function that is called when event is fired. Note the callback is limited to 8 arguments.
scope	object	Object to use as 'this' when the event is fired, defaults to current this.

Returns

EventHandle

• can be used for removing event in the future.