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<title>Phaser Source: core/World.js</title>
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<h1 class="page-title">Source: core/World.js</h1>
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<article>
<pre class="sunlight-highlight-javascript linenums">/**
* @author Richard Davey &lt;rich@photonstorm.com>
* @copyright 2013 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* "This world is but a canvas to our imagination." - Henry David Thoreau
* &lt;p>
* A game has only one world. The world is an abstract place in which all game objects live. It is not bound
* by stage limits and can be any size. You look into the world via cameras. All game objects live within
* the world at world-based coordinates. By default a world is created the same size as your Stage.
*
* @class Phaser.World
* @constructor
* @param {Phaser.Game} game - Reference to the current game instance.
*/
Phaser.World = function (game) {
/**
* @property {Phaser.Game} game - A reference to the currently running Game.
*/
this.game = game;
/**
* @property {Phaser.Rectangle} bounds - Bound of this world that objects can not escape from.
*/
this.bounds = new Phaser.Rectangle(0, 0, game.width, game.height);
/**
* @property {Phaser.Camera} camera - Camera instance.
*/
this.camera = null;
/**
* @property {number} currentRenderOrderID - Reset each frame, keeps a count of the total number of objects updated.
*/
this.currentRenderOrderID = 0;
/**
* @property {Phaser.Group} group - Object container stores every object created with `create*` methods.
*/
this.group = null;
};
Phaser.World.prototype = {
/**
* Initialises the game world.
*
* @method Phaser.World#boot
* @protected
*/
boot: function () {
this.camera = new Phaser.Camera(this.game, 0, 0, 0, this.game.width, this.game.height);
this.game.camera = this.camera;
this.group = new Phaser.Group(this.game, null, '__world', true);
},
/**
* This is called automatically every frame, and is where main logic happens.
*
* @method Phaser.World#update
*/
update: function () {
this.camera.update();
this.currentRenderOrderID = 0;
if (this.game.stage._stage.first._iNext)
{
var currentNode = this.game.stage._stage.first._iNext;
do
{
if (currentNode['preUpdate'])
{
currentNode.preUpdate();
}
if (currentNode['update'])
{
currentNode.update();
}
currentNode = currentNode._iNext;
}
while (currentNode != this.game.stage._stage.last._iNext)
}
},
/**
* This is called automatically every frame, and is where main logic happens.
* @method Phaser.World#postUpdate
*/
postUpdate: function () {
if (this.game.stage._stage.first._iNext)
{
var currentNode = this.game.stage._stage.first._iNext;
do
{
if (currentNode['postUpdate'])
{
currentNode.postUpdate();
}
currentNode = currentNode._iNext;
}
while (currentNode != this.game.stage._stage.last._iNext)
}
},
/**
* Updates the size of this world.
* @method Phaser.World#setSize
* @param {number} width - New width of the world.
* @param {number} height - New height of the world.
*/
setSize: function (width, height) {
if (width >= this.game.width)
{
this.bounds.width = width;
}
if (height >= this.game.height)
{
this.bounds.height = height;
}
},
/**
* Destroyer of worlds.
* @method Phaser.World#destroy
*/
destroy: function () {
this.camera.x = 0;
this.camera.y = 0;
this.game.input.reset(true);
this.group.removeAll();
}
};
/**
* @name Phaser.World#width
* @property {number} width - Gets or sets the current width of the game world.
*/
Object.defineProperty(Phaser.World.prototype, "width", {
get: function () {
return this.bounds.width;
},
set: function (value) {
this.bounds.width = value;
}
});
/**
* @name Phaser.World#height
* @property {number} height - Gets or sets the current height of the game world.
*/
Object.defineProperty(Phaser.World.prototype, "height", {
get: function () {
return this.bounds.height;
},
set: function (value) {
this.bounds.height = value;
}
});
/**
* @name Phaser.World#centerX
* @property {number} centerX - Gets the X position corresponding to the center point of the world.
* @readonly
*/
Object.defineProperty(Phaser.World.prototype, "centerX", {
get: function () {
return this.bounds.halfWidth;
}
});
/**
* @name Phaser.World#centerY
* @property {number} centerY - Gets the Y position corresponding to the center point of the world.
* @readonly
*/
Object.defineProperty(Phaser.World.prototype, "centerY", {
get: function () {
return this.bounds.halfHeight;
}
});
/**
* @name Phaser.World#randomX
* @property {number} randomX - Gets a random integer which is lesser than or equal to the current width of the game world.
* @readonly
*/
Object.defineProperty(Phaser.World.prototype, "randomX", {
get: function () {
return Math.round(Math.random() * this.bounds.width);
}
});
/**
* @name Phaser.World#randomY
* @property {number} randomY - Gets a random integer which is lesser than or equal to the current height of the game world.
* @readonly
*/
Object.defineProperty(Phaser.World.prototype, "randomY", {
get: function () {
return Math.round(Math.random() * this.bounds.height);
}
});
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