phaser/src/gameobjects/components/Depth.js
2019-05-10 16:15:04 +01:00

87 lines
2.4 KiB
JavaScript

/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2019 Photon Storm Ltd.
* @license {@link https://opensource.org/licenses/MIT|MIT License}
*/
/**
* Provides methods used for setting the depth of a Game Object.
* Should be applied as a mixin and not used directly.
*
* @namespace Phaser.GameObjects.Components.Depth
* @since 3.0.0
*/
var Depth = {
/**
* Private internal value. Holds the depth of the Game Object.
*
* @name Phaser.GameObjects.Components.Depth#_depth
* @type {integer}
* @private
* @default 0
* @since 3.0.0
*/
_depth: 0,
/**
* The depth of this Game Object within the Scene.
*
* The depth is also known as the 'z-index' in some environments, and allows you to change the rendering order
* of Game Objects, without actually moving their position in the display list.
*
* The depth starts from zero (the default value) and increases from that point. A Game Object with a higher depth
* value will always render in front of one with a lower value.
*
* Setting the depth will queue a depth sort event within the Scene.
*
* @name Phaser.GameObjects.Components.Depth#depth
* @type {number}
* @since 3.0.0
*/
depth: {
get: function ()
{
return this._depth;
},
set: function (value)
{
this.scene.sys.queueDepthSort();
this._depth = value;
}
},
/**
* The depth of this Game Object within the Scene.
*
* The depth is also known as the 'z-index' in some environments, and allows you to change the rendering order
* of Game Objects, without actually moving their position in the display list.
*
* The depth starts from zero (the default value) and increases from that point. A Game Object with a higher depth
* value will always render in front of one with a lower value.
*
* Setting the depth will queue a depth sort event within the Scene.
*
* @method Phaser.GameObjects.Components.Depth#setDepth
* @since 3.0.0
*
* @param {integer} value - The depth of this Game Object.
*
* @return {this} This Game Object instance.
*/
setDepth: function (value)
{
if (value === undefined) { value = 0; }
this.depth = value;
return this;
}
};
module.exports = Depth;