Event emitter

Introduction¶

Usage¶

Get event emitter¶

Scene:
```
var ee = scene.events;
```
Game object:
```
var ee = gameObject;
```

Attach listener¶

ee.on(eventName, callback, scope);
ee.once(eventName, callback, scope);  // only fire listeners one time

Alias

ee.addListener(eventName, callback, scope);
ee.addListener(eventName, callback, scope, true);  // only fire listeners one time

Fire event¶

ee.emit(eventName, parameter0, ...);

Remove listeners¶

Remove a linstener

ee.off(eventName, callback, scope);
ee.off(eventName, callback, scope, true);   // only remove one-time listeners

or

ee.removeListener(eventName, callback, scope); 
ee.removeListener(eventName, callback, scope, true);  // only remove one-time listeners

Remove listeners of an event

ee.off(eventName);

or

ee.removeListener(eventName);

Remove listeners of all events
```
ee.removeAllListeners();
```

Get listeners count¶

var count = ee.listenerCount(eventName);
//var noListener = (ee.listenerCount(eventName) === 0);

Get listeners¶

var listeners = ee.listeners(eventName);

Get event names¶

var names = ee.eventNames();

Listener¶

{
    fn: callback,
    context: scope,
    once: once
}

Custom event emitter class¶

class MyEventEmitter extends Phaser.Events.EventEmitter {
    // construct() {
    //     super();
    // }

    // destroy() {
    //     super.destroy();
    // }
}