/**
* @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 Events component is a collection of events fired by the parent game object.
*
* Phaser uses what are known as 'Signals' for all event handling. All of the events in
* this class are signals you can subscribe to, much in the same way you'd "listen" for
* an event.
*
* For example to tell when a Sprite has been added to a new group, you can bind a function
* to the `onAddedToGroup` signal:
*
* `sprite.events.onAddedToGroup.add(yourFunction, this);`
*
* Where `yourFunction` is the function you want called when this event occurs.
*
* For more details about how signals work please see the Phaser.Signal class.
*
* The Input-related events will only be dispatched if the Sprite has had `inputEnabled` set to `true`
* and the Animation-related events only apply to game objects with animations like {@link Phaser.Sprite}.
*
* @class Phaser.Events
* @constructor
* @param {Phaser.Sprite} sprite - A reference to the game object / Sprite that owns this Events object.
*/
Phaser.Events = function (sprite) {
/**
* @property {Phaser.Sprite} parent - The Sprite that owns these events.
*/
this.parent = sprite;
// The signals are automatically added by the corresponding proxy properties
};
Phaser.Events.prototype = {
/**
* Removes all events.
*
* @method Phaser.Events#destroy
*/
destroy: function () {
this._parent = null;
if (this._onDestroy) { this._onDestroy.dispose(); }
if (this._onAddedToGroup) { this._onAddedToGroup.dispose(); }
if (this._onRemovedFromGroup) { this._onRemovedFromGroup.dispose(); }
if (this._onRemovedFromWorld) { this._onRemovedFromWorld.dispose(); }
if (this._onKilled) { this._onKilled.dispose(); }
if (this._onRevived) { this._onRevived.dispose(); }
if (this._onEnterBounds) { this._onEnterBounds.dispose(); }
if (this._onOutOfBounds) { this._onOutOfBounds.dispose(); }
if (this._onInputOver) { this._onInputOver.dispose(); }
if (this._onInputOut) { this._onInputOut.dispose(); }
if (this._onInputDown) { this._onInputDown.dispose(); }
if (this._onInputUp) { this._onInputUp.dispose(); }
if (this._onDragStart) { this._onDragStart.dispose(); }
if (this._onDragUpdate) { this._onDragUpdate.dispose(); }
if (this._onDragStop) { this._onDragStop.dispose(); }
if (this._onAnimationStart) { this._onAnimationStart.dispose(); }
if (this._onAnimationComplete) { this._onAnimationComplete.dispose(); }
if (this._onAnimationLoop) { this._onAnimationLoop.dispose(); }
},
// The following properties are sentinels that will be replaced with getters
/**
* @property {Phaser.Signal} onAddedToGroup - This signal is dispatched when the parent is added to a new Group.
*/
onAddedToGroup: null,
/**
* @property {Phaser.Signal} onRemovedFromGroup - This signal is dispatched when the parent is removed from a Group.
*/
onRemovedFromGroup: null,
/**
* @property {Phaser.Signal} onRemovedFromWorld - This signal is dispatched if this item or any of its parents are removed from the game world.
*/
onRemovedFromWorld: null,
/**
* @property {Phaser.Signal} onDestroy - This signal is dispatched when the parent is destroyed.
*/
onDestroy: null,
/**
* @property {Phaser.Signal} onKilled - This signal is dispatched when the parent is killed.
*/
onKilled: null,
/**
* @property {Phaser.Signal} onRevived - This signal is dispatched when the parent is revived.
*/
onRevived: null,
/**
* @property {Phaser.Signal} onOutOfBounds - This signal is dispatched when the parent leaves the world bounds (only if Sprite.checkWorldBounds is true).
*/
onOutOfBounds: null,
/**
* @property {Phaser.Signal} onEnterBounds - This signal is dispatched when the parent returns within the world bounds (only if Sprite.checkWorldBounds is true).
*/
onEnterBounds: null,
/**
* @property {Phaser.Signal} onInputOver - This signal is dispatched if the parent is inputEnabled and receives an over event from a Pointer.
*/
onInputOver: null,
/**
* @property {Phaser.Signal} onInputOut - This signal is dispatched if the parent is inputEnabled and receives an out event from a Pointer.
*/
onInputOut: null,
/**
* @property {Phaser.Signal} onInputDown - This signal is dispatched if the parent is inputEnabled and receives a down event from a Pointer.
*/
onInputDown: null,
/**
* @property {Phaser.Signal} onInputUp - This signal is dispatched if the parent is inputEnabled and receives an up event from a Pointer.
*/
onInputUp: null,
/**
* @property {Phaser.Signal} onDragStart - This signal is dispatched if the parent is inputEnabled and receives a drag start event from a Pointer.
*/
onDragStart: null,
/**
* @property {Phaser.Signal} onDragUpdate - This signal is dispatched if the parent is inputEnabled and receives a drag update event from a Pointer.
*/
onDragUpdate: null,
/**
* @property {Phaser.Signal} onDragStop - This signal is dispatched if the parent is inputEnabled and receives a drag stop event from a Pointer.
*/
onDragStop: null,
/**
* @property {Phaser.Signal} onAnimationStart - This signal is dispatched when the parent has an animation that is played.
*/
onAnimationStart: null,
/**
* @property {Phaser.Signal} onAnimationComplete - This signal is dispatched when the parent has an animation that finishes playing.
*/
onAnimationComplete: null,
/**
* @property {Phaser.Signal} onAnimationLoop - This signal is dispatched when the parent has an animation that loops playback.
*/
onAnimationLoop: null
};
Phaser.Events.prototype.constructor = Phaser.Events;
// Create an auto-create proxy getter and dispatch method for all events.
// The backing property is the same as the event name, prefixed with '_'
// and the dispatch method is the same as the event name postfixed with '$dispatch'.
for (var prop in Phaser.Events.prototype)
{
if (!Phaser.Events.prototype.hasOwnProperty(prop) ||
prop.indexOf('on') !== 0 ||
Phaser.Events.prototype[prop] !== null)
{
continue;
}
(function (prop, backing) {
'use strict';
// The accessor creates a new Signal; and so it should only be used from user-code.
Object.defineProperty(Phaser.Events.prototype, prop, {
get: function () {
return this[backing] || (this[backing] = new Phaser.Signal());
}
});
// The dispatcher will only broadcast on an already-created signal; call this internally.
Phaser.Events.prototype[prop + '$dispatch'] = function () {
return this[backing] ? this[backing].dispatch.apply(this[backing], arguments) : null;
};
})(prop, '_' + prop);
}
