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  98. 							<a href="Phaser.Easing.Back.html">Back</a>
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  110. 							<a href="Phaser.Easing.Cubic.html">Cubic</a>
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  126. 							<a href="Phaser.Easing.Quadratic.html">Quadratic</a>
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  130. 							<a href="Phaser.Easing.Quartic.html">Quartic</a>
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  134. 							<a href="Phaser.Easing.Quintic.html">Quintic</a>
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  138. 							<a href="Phaser.Easing.Sinusoidal.html">Sinusoidal</a>
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  142. 							<a href="Phaser.Ellipse.html">Ellipse</a>
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  154. 							<a href="Phaser.Frame.html">Frame</a>
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  186. 							<a href="Phaser.Group.html">Group</a>
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  190. 							<a href="Phaser.Image.html">Image</a>
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  194. 							<a href="Phaser.Input.html">Input</a>
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  270. 							<a href="Phaser.Physics.Ninja.AABB.html">AABB</a>
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  274. 							<a href="Phaser.Physics.Ninja.Body.html">Body</a>
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  278. 							<a href="Phaser.Physics.Ninja.Circle.html">Circle</a>
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  285. 						<li class="class-depth-2">
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  286. 							<a href="Phaser.Physics.P2.html">P2</a>
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  290. 							<a href="Phaser.Physics.P2.Body.html">Body</a>
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  294. 							<a href="Phaser.Physics.P2.BodyDebug.html">BodyDebug</a>
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  298. 							<a href="Phaser.Physics.P2.CollisionGroup.html">CollisionGroup</a>
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  302. 							<a href="Phaser.Physics.P2.ContactMaterial.html">ContactMaterial</a>
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  306. 							<a href="Phaser.Physics.P2.DistanceConstraint.html">DistanceConstraint</a>
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  310. 							<a href="Phaser.Physics.P2.FixtureList.html">FixtureList</a>
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  314. 							<a href="Phaser.Physics.P2.GearConstraint.html">GearConstraint</a>
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  318. 							<a href="Phaser.Physics.P2.InversePointProxy.html">InversePointProxy</a>
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  322. 							<a href="Phaser.Physics.P2.LockConstraint.html">LockConstraint</a>
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  326. 							<a href="Phaser.Physics.P2.Material.html">Material</a>
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    328. 

  328. 						
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  329. 						<li class="class-depth-3">
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  330. 							<a href="Phaser.Physics.P2.PointProxy.html">PointProxy</a>
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  333. 						<li class="class-depth-3">
    334. 

  334. 							<a href="Phaser.Physics.P2.PrismaticConstraint.html">PrismaticConstraint</a>
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  336. 						
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  337. 						<li class="class-depth-3">
    338. 

  338. 							<a href="Phaser.Physics.P2.RevoluteConstraint.html">RevoluteConstraint</a>
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    340. 

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    342. 

  342. 							<a href="Phaser.Physics.P2.Spring.html">Spring</a>
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  346. 							<a href="Phaser.Plugin.html">Plugin</a>
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  350. 							<a href="Phaser.PluginManager.html">PluginManager</a>
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  354. 							<a href="Phaser.Point.html">Point</a>
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    356. 

  356. 						
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  357. 						<li class="class-depth-1">
    358. 

  358. 							<a href="Phaser.Pointer.html">Pointer</a>
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  359. 						</li>
    360. 

  360. 						
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  362. 							<a href="Phaser.Polygon.html">Polygon</a>
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    364. 

  364. 						
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  365. 						<li class="class-depth-1">
    366. 

  366. 							<a href="Phaser.QuadTree.html">QuadTree</a>
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  367. 						</li>
    368. 

  368. 						
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  370. 							<a href="Phaser.RandomDataGenerator.html">RandomDataGenerator</a>
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  374. 							<a href="Phaser.Rectangle.html">Rectangle</a>
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  378. 							<a href="Phaser.RenderTexture.html">RenderTexture</a>
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  382. 							<a href="Phaser.RequestAnimationFrame.html">RequestAnimationFrame</a>
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  386. 							<a href="Phaser.RetroFont.html">RetroFont</a>
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  390. 							<a href="Phaser.ScaleManager.html">ScaleManager</a>
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  394. 							<a href="Phaser.Signal.html">Signal</a>
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  397. 						<li class="class-depth-1">
    398. 

  398. 							<a href="Phaser.SignalBinding.html">SignalBinding</a>
    399. 

  399. 						</li>
    400. 

  400. 						
    401. 

  401. 						<li class="class-depth-1">
    402. 

  402. 							<a href="Phaser.SinglePad.html">SinglePad</a>
    403. 

  403. 						</li>
    404. 

  404. 						
    405. 

  405. 						<li class="class-depth-1">
    406. 

  406. 							<a href="Phaser.Sound.html">Sound</a>
    407. 

  407. 						</li>
    408. 

  408. 						
    409. 

  409. 						<li class="class-depth-1">
    410. 

  410. 							<a href="Phaser.SoundManager.html">SoundManager</a>
    411. 

  411. 						</li>
    412. 

  412. 						
    413. 

  413. 						<li class="class-depth-1">
    414. 

  414. 							<a href="Phaser.Sprite.html">Sprite</a>
    415. 

  415. 						</li>
    416. 

  416. 						
    417. 

  417. 						<li class="class-depth-1">
    418. 

  418. 							<a href="Phaser.SpriteBatch.html">SpriteBatch</a>
    419. 

  419. 						</li>
    420. 

  420. 						
    421. 

  421. 						<li class="class-depth-1">
    422. 

  422. 							<a href="Phaser.Stage.html">Stage</a>
    423. 

  423. 						</li>
    424. 

  424. 						
    425. 

  425. 						<li class="class-depth-1">
    426. 

  426. 							<a href="Phaser.State.html">State</a>
    427. 

  427. 						</li>
    428. 

  428. 						
    429. 

  429. 						<li class="class-depth-1">
    430. 

  430. 							<a href="Phaser.StateManager.html">StateManager</a>
    431. 

  431. 						</li>
    432. 

  432. 						
    433. 

  433. 						<li class="class-depth-1">
    434. 

  434. 							<a href="Phaser.Text.html">Text</a>
    435. 

  435. 						</li>
    436. 

  436. 						
    437. 

  437. 						<li class="class-depth-1">
    438. 

  438. 							<a href="Phaser.Tile.html">Tile</a>
    439. 

  439. 						</li>
    440. 

  440. 						
    441. 

  441. 						<li class="class-depth-1">
    442. 

  442. 							<a href="Phaser.Tilemap.html">Tilemap</a>
    443. 

  443. 						</li>
    444. 

  444. 						
    445. 

  445. 						<li class="class-depth-1">
    446. 

  446. 							<a href="Phaser.TilemapLayer.html">TilemapLayer</a>
    447. 

  447. 						</li>
    448. 

  448. 						
    449. 

  449. 						<li class="class-depth-1">
    450. 

  450. 							<a href="Phaser.TilemapParser.html">TilemapParser</a>
    451. 

  451. 						</li>
    452. 

  452. 						
    453. 

  453. 						<li class="class-depth-1">
    454. 

  454. 							<a href="Phaser.Tileset.html">Tileset</a>
    455. 

  455. 						</li>
    456. 

  456. 						
    457. 

  457. 						<li class="class-depth-1">
    458. 

  458. 							<a href="Phaser.TileSprite.html">TileSprite</a>
    459. 

  459. 						</li>
    460. 

  460. 						
    461. 

  461. 						<li class="class-depth-1">
    462. 

  462. 							<a href="Phaser.Time.html">Time</a>
    463. 

  463. 						</li>
    464. 

  464. 						
    465. 

  465. 						<li class="class-depth-1">
    466. 

  466. 							<a href="Phaser.Timer.html">Timer</a>
    467. 

  467. 						</li>
    468. 

  468. 						
    469. 

  469. 						<li class="class-depth-1">
    470. 

  470. 							<a href="Phaser.TimerEvent.html">TimerEvent</a>
    471. 

  471. 						</li>
    472. 

  472. 						
    473. 

  473. 						<li class="class-depth-1">
    474. 

  474. 							<a href="Phaser.Touch.html">Touch</a>
    475. 

  475. 						</li>
    476. 

  476. 						
    477. 

  477. 						<li class="class-depth-1">
    478. 

  478. 							<a href="Phaser.Tween.html">Tween</a>
    479. 

  479. 						</li>
    480. 

  480. 						
    481. 

  481. 						<li class="class-depth-1">
    482. 

  482. 							<a href="Phaser.TweenManager.html">TweenManager</a>
    483. 

  483. 						</li>
    484. 

  484. 						
    485. 

  485. 						<li class="class-depth-1">
    486. 

  486. 							<a href="Phaser.Utils.html">Utils</a>
    487. 

  487. 						</li>
    488. 

  488. 						
    489. 

  489. 						<li class="class-depth-2">
    490. 

  490. 							<a href="Phaser.Utils.Debug.html">Debug</a>
    491. 

  491. 						</li>
    492. 

  492. 						
    493. 

  493. 						<li class="class-depth-1">
    494. 

  494. 							<a href="Phaser.World.html">World</a>
    495. 

  495. 						</li>
    496. 

  496. 						
    497. 

  497. 

  498. 					</ul>
    499. 

  499. 				</li>
    500. 

  500. 				
    501. 

  501. 			</ul>
    502. 

  502. 		</div>
    503. 

  503. 	</div>
    504. 

  504. 

  505. 	<div class="row-fluid">
    506. 

  506. 

  507. 		
    508. 

  508. 			<div class="span12">
    509. 

  509. 				
    510. 

  510. 				<div id="main">
    511. 

  511. 					
    512. 

  512. 

  513. 

  514. 		<h1 class="page-title">Source: math/QuadTree.js</h1>
    515. 

  515.     
    516. 

  516.     <section>
    517. 

  517.         <article>
    518. 

  518.             <pre class="sunlight-highlight-javascript linenums">/**
    519. 

  519.  * @author       Richard Davey &lt;rich@photonstorm.com>
    520. 

  520.  * @copyright    2014 Photon Storm Ltd.
    521. 

  521.  * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
    522. 

  522.  */
    523. 

  523. 

  524. /**
    525. 

  525. * Javascript QuadTree
    526. 

  526. * @version 1.0
    527. 

  527. * @author Timo Hausmann
    528. 

  528. *
    529. 

  529. * @version 1.3, March 11th 2014
    530. 

  530. * @author Richard Davey
    531. 

  531. * The original code was a conversion of the Java code posted to GameDevTuts. However I've tweaked
    532. 

  532. * it massively to add node indexing, removed lots of temp. var creation and significantly
    533. 

  533. * increased performance as a result.
    534. 

  534. *
    535. 

  535. * Original version at https://github.com/timohausmann/quadtree-js/
    536. 

  536. */
    537. 

  537. 

  538. /**
    539. 

  539. * @copyright © 2012 Timo Hausmann
    540. 

  540. *
    541. 

  541. * Permission is hereby granted, free of charge, to any person obtaining
    542. 

  542. * a copy of this software and associated documentation files (the
    543. 

  543. * "Software"), to deal in the Software without restriction, including
    544. 

  544. * without limitation the rights to use, copy, modify, merge, publish,
    545. 

  545. * distribute, sublicense, and/or sell copies of the Software, and to
    546. 

  546. * permit persons to whom the Software is furnished to do so, subject to
    547. 

  547. * the following conditions:
    548. 

  548. *
    549. 

  549. * The above copyright notice and this permission notice shall be
    550. 

  550. * included in all copies or substantial portions of the Software.
    551. 

  551. *
    552. 

  552. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    553. 

  553. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    554. 

  554. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    555. 

  555. * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
    556. 

  556. * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
    557. 

  557. * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
    558. 

  558. * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    559. 

  559. */
    560. 

  560. 

  561. /**
    562. 

  562. * QuadTree Constructor
    563. 

  563. *
    564. 

  564. * @class Phaser.QuadTree
    565. 

  565. * @classdesc A QuadTree implementation. The original code was a conversion of the Java code posted to GameDevTuts.
    566. 

  566. * However I've tweaked it massively to add node indexing, removed lots of temp. var creation and significantly increased performance as a result.
    567. 

  567. * Original version at https://github.com/timohausmann/quadtree-js/
    568. 

  568. * @constructor
    569. 

  569. * @param {number} x - The top left coordinate of the quadtree.
    570. 

  570. * @param {number} y - The top left coordinate of the quadtree.
    571. 

  571. * @param {number} width - The width of the quadtree in pixels.
    572. 

  572. * @param {number} height - The height of the quadtree in pixels.
    573. 

  573. * @param {number} [maxObjects=10] - The maximum number of objects per node.
    574. 

  574. * @param {number} [maxLevels=4] - The maximum number of levels to iterate to.
    575. 

  575. * @param {number} [level=0] - Which level is this?
    576. 

  576. */
    577. 

  577. Phaser.QuadTree = function(x, y, width, height, maxObjects, maxLevels, level) {
    578. 

  578. 

  579.     /**
    580. 

  580.     * @property {number} maxObjects - The maximum number of objects per node.
    581. 

  581.     * @default
    582. 

  582.     */
    583. 

  583.     this.maxObjects = 10;
    584. 

  584. 

  585.     /**
    586. 

  586.     * @property {number} maxLevels - The maximum number of levels to break down to.
    587. 

  587.     * @default
    588. 

  588.     */
    589. 

  589.     this.maxLevels = 4;
    590. 

  590. 

  591.     /**
    592. 

  592.     * @property {number} level - The current level.
    593. 

  593.     */
    594. 

  594.     this.level = 0;
    595. 

  595. 

  596.     /**
    597. 

  597.     * @property {object} bounds - Object that contains the quadtree bounds.
    598. 

  598.     */
    599. 

  599.     this.bounds = {};
    600. 

  600. 

  601.     /**
    602. 

  602.     * @property {array} objects - Array of quadtree children.
    603. 

  603.     */
    604. 

  604.     this.objects = [];
    605. 

  605. 

  606.     /**
    607. 

  607.     * @property {array} nodes - Array of associated child nodes.
    608. 

  608.     */
    609. 

  609.     this.nodes = [];
    610. 

  610. 

  611.     this.reset(x, y, width, height, maxObjects, maxLevels, level);
    612. 

  612. 

  613. };
    614. 

  614. 

  615. Phaser.QuadTree.prototype = {
    616. 

  616. 

  617.     /**
    618. 

  618.     * Resets the QuadTree.
    619. 

  619.     *
    620. 

  620.     * @method Phaser.QuadTree#reset
    621. 

  621.     * @param {number} x - The top left coordinate of the quadtree.
    622. 

  622.     * @param {number} y - The top left coordinate of the quadtree.
    623. 

  623.     * @param {number} width - The width of the quadtree in pixels.
    624. 

  624.     * @param {number} height - The height of the quadtree in pixels.
    625. 

  625.     * @param {number} [maxObjects=10] - The maximum number of objects per node.
    626. 

  626.     * @param {number} [maxLevels=4] - The maximum number of levels to iterate to.
    627. 

  627.     * @param {number} [level=0] - Which level is this?
    628. 

  628.     */
    629. 

  629.     reset: function (x, y, width, height, maxObjects, maxLevels, level) {
    630. 

  630. 

  631.         this.maxObjects = maxObjects || 10;
    632. 

  632.         this.maxLevels = maxLevels || 4;
    633. 

  633.         this.level = level || 0;
    634. 

  634. 

  635.         this.bounds = {
    636. 

  636.             x: Math.round(x),
    637. 

  637.             y: Math.round(y),
    638. 

  638.             width: width,
    639. 

  639.             height: height,
    640. 

  640.             subWidth: Math.floor(width / 2),
    641. 

  641.             subHeight: Math.floor(height / 2),
    642. 

  642.             right: Math.round(x) + Math.floor(width / 2),
    643. 

  643.             bottom: Math.round(y) + Math.floor(height / 2)
    644. 

  644.         };
    645. 

  645. 

  646.         this.objects.length = 0;
    647. 

  647.         this.nodes.length = 0;
    648. 

  648. 

  649.     },
    650. 

  650. 

  651.     /**
    652. 

  652.     * Populates this quadtree with the children of the given Group. In order to be added the child must exist and have a body property.
    653. 

  653.     *
    654. 

  654.     * @method Phaser.QuadTree#populate
    655. 

  655.     * @param {Phaser.Group} group - The Group to add to the quadtree.
    656. 

  656.     */
    657. 

  657.     populate: function (group) {
    658. 

  658. 

  659.         group.forEach(this.populateHandler, this, true);
    660. 

  660. 

  661.     },
    662. 

  662. 

  663.     /**
    664. 

  664.     * Handler for the populate method.
    665. 

  665.     *
    666. 

  666.     * @method Phaser.QuadTree#populateHandler
    667. 

  667.     * @param {Phaser.Sprite|object} sprite - The Sprite to check.
    668. 

  668.     */
    669. 

  669.     populateHandler: function (sprite) {
    670. 

  670. 

  671.         if (sprite.body && sprite.exists)
    672. 

  672.         {
    673. 

  673.             this.insert(sprite.body);
    674. 

  674.         }
    675. 

  675. 

  676.     },
    677. 

  677. 

  678.     /**
    679. 

  679.     * Split the node into 4 subnodes
    680. 

  680.     *
    681. 

  681.     * @method Phaser.QuadTree#split
    682. 

  682.     */
    683. 

  683.     split: function () {
    684. 

  684. 

  685.         this.level++;
    686. 

  686. 

  687.         //  top right node
    688. 

  688.         this.nodes[0] = new Phaser.QuadTree(this.bounds.right, this.bounds.y, this.bounds.subWidth, this.bounds.subHeight, this.maxObjects, this.maxLevels, this.level);
    689. 

  689. 

  690.         //  top left node
    691. 

  691.         this.nodes[1] = new Phaser.QuadTree(this.bounds.x, this.bounds.y, this.bounds.subWidth, this.bounds.subHeight, this.maxObjects, this.maxLevels, this.level);
    692. 

  692. 

  693.         //  bottom left node
    694. 

  694.         this.nodes[2] = new Phaser.QuadTree(this.bounds.x, this.bounds.bottom, this.bounds.subWidth, this.bounds.subHeight, this.maxObjects, this.maxLevels, this.level);
    695. 

  695. 

  696.         //  bottom right node
    697. 

  697.         this.nodes[3] = new Phaser.QuadTree(this.bounds.right, this.bounds.bottom, this.bounds.subWidth, this.bounds.subHeight, this.maxObjects, this.maxLevels, this.level);
    698. 

  698. 

  699.     },
    700. 

  700. 

  701.     /**
    702. 

  702.     * Insert the object into the node. If the node exceeds the capacity, it will split and add all objects to their corresponding subnodes.
    703. 

  703.     *
    704. 

  704.     * @method Phaser.QuadTree#insert
    705. 

  705.     * @param {Phaser.Physics.Arcade.Body|object} body - The Body object to insert into the quadtree. Can be any object so long as it exposes x, y, right and bottom properties.
    706. 

  706.     */
    707. 

  707.     insert: function (body) {
    708. 

  708. 

  709.         var i = 0;
    710. 

  710.         var index;
    711. 

  711. 

  712.         //  if we have subnodes ...
    713. 

  713.         if (this.nodes[0] != null)
    714. 

  714.         {
    715. 

  715.             index = this.getIndex(body);
    716. 

  716. 

  717.             if (index !== -1)
    718. 

  718.             {
    719. 

  719.                 this.nodes[index].insert(body);
    720. 

  720.                 return;
    721. 

  721.             }
    722. 

  722.         }
    723. 

  723. 

  724.         this.objects.push(body);
    725. 

  725. 

  726.         if (this.objects.length > this.maxObjects && this.level &lt; this.maxLevels)
    727. 

  727.         {
    728. 

  728.             //  Split if we don't already have subnodes
    729. 

  729.             if (this.nodes[0] == null)
    730. 

  730.             {
    731. 

  731.                 this.split();
    732. 

  732.             }
    733. 

  733. 

  734.             //  Add objects to subnodes
    735. 

  735.             while (i &lt; this.objects.length)
    736. 

  736.             {
    737. 

  737.                 index = this.getIndex(this.objects[i]);
    738. 

  738. 

  739.                 if (index !== -1)
    740. 

  740.                 {
    741. 

  741.                     //  this is expensive - see what we can do about it
    742. 

  742.                     this.nodes[index].insert(this.objects.splice(i, 1)[0]);
    743. 

  743.                 }
    744. 

  744.                 else
    745. 

  745.                 {
    746. 

  746.                     i++;
    747. 

  747.                 }
    748. 

  748.             }
    749. 

  749.         }
    750. 

  750. 

  751.     },
    752. 

  752. 

  753.     /**
    754. 

  754.     * Determine which node the object belongs to.
    755. 

  755.     *
    756. 

  756.     * @method Phaser.QuadTree#getIndex
    757. 

  757.     * @param {Phaser.Rectangle|object} rect - The bounds in which to check.
    758. 

  758.     * @return {number} index - Index of the subnode (0-3), or -1 if rect cannot completely fit within a subnode and is part of the parent node.
    759. 

  759.     */
    760. 

  760.     getIndex: function (rect) {
    761. 

  761. 

  762.         //  default is that rect doesn't fit, i.e. it straddles the internal quadrants
    763. 

  763.         var index = -1;
    764. 

  764. 

  765.         if (rect.x &lt; this.bounds.right && rect.right &lt; this.bounds.right)
    766. 

  766.         {
    767. 

  767.             if (rect.y &lt; this.bounds.bottom && rect.bottom &lt; this.bounds.bottom)
    768. 

  768.             {
    769. 

  769.                 //  rect fits within the top-left quadrant of this quadtree
    770. 

  770.                 index = 1;
    771. 

  771.             }
    772. 

  772.             else if (rect.y > this.bounds.bottom)
    773. 

  773.             {
    774. 

  774.                 //  rect fits within the bottom-left quadrant of this quadtree
    775. 

  775.                 index = 2;
    776. 

  776.             }
    777. 

  777.         }
    778. 

  778.         else if (rect.x > this.bounds.right)
    779. 

  779.         {
    780. 

  780.             //  rect can completely fit within the right quadrants
    781. 

  781.             if (rect.y &lt; this.bounds.bottom && rect.bottom &lt; this.bounds.bottom)
    782. 

  782.             {
    783. 

  783.                 //  rect fits within the top-right quadrant of this quadtree
    784. 

  784.                 index = 0;
    785. 

  785.             }
    786. 

  786.             else if (rect.y > this.bounds.bottom)
    787. 

  787.             {
    788. 

  788.                 //  rect fits within the bottom-right quadrant of this quadtree
    789. 

  789.                 index = 3;
    790. 

  790.             }
    791. 

  791.         }
    792. 

  792. 

  793.         return index;
    794. 

  794. 

  795.     },
    796. 

  796. 

  797.     /**
    798. 

  798.     * Return all objects that could collide with the given Sprite.
    799. 

  799.     *
    800. 

  800.     * @method Phaser.QuadTree#retrieve
    801. 

  801.     * @param {Phaser.Sprite} sprite - The sprite to check against.
    802. 

  802.     * @return {array} - Array with all detected objects.
    803. 

  803.     */
    804. 

  804.     retrieve: function (sprite) {
    805. 

  805. 

  806.         var returnObjects = this.objects;
    807. 

  807. 

  808.         // sprite.body.quadTreeIndex = this.getIndex(sprite.body);
    809. 

  809.         var index = this.getIndex(sprite.body);
    810. 

  810. 

  811.         if (this.nodes[0])
    812. 

  812.         {
    813. 

  813.             //  If rect fits into a subnode ..
    814. 

  814.             if (index !== -1)
    815. 

  815.             {
    816. 

  816.                 returnObjects = returnObjects.concat(this.nodes[index].retrieve(sprite));
    817. 

  817.             }
    818. 

  818.             else
    819. 

  819.             {
    820. 

  820.                 //  If rect does not fit into a subnode, check it against all subnodes (unrolled for speed)
    821. 

  821.                 returnObjects = returnObjects.concat(this.nodes[0].retrieve(sprite));
    822. 

  822.                 returnObjects = returnObjects.concat(this.nodes[1].retrieve(sprite));
    823. 

  823.                 returnObjects = returnObjects.concat(this.nodes[2].retrieve(sprite));
    824. 

  824.                 returnObjects = returnObjects.concat(this.nodes[3].retrieve(sprite));
    825. 

  825.             }
    826. 

  826.         }
    827. 

  827. 

  828.         return returnObjects;
    829. 

  829. 

  830.     },
    831. 

  831. 

  832.     /**
    833. 

  833.     * Clear the quadtree.
    834. 

  834.     * @method Phaser.QuadTree#clear
    835. 

  835.     */
    836. 

  836.     clear: function () {
    837. 

  837. 

  838.         this.objects.length = 0;
    839. 

  839. 

  840.         var i = this.nodes.length;
    841. 

  841. 

  842.         while (i--)
    843. 

  843.         {
    844. 

  844.             this.nodes[i].clear();
    845. 

  845.             this.nodes.splice(i, 1);
    846. 

  846.         }
    847. 

  847. 

  848.         this.nodes.length = 0;
    849. 

  849.     }
    850. 

  850. 

  851. };
    852. 

  852. 

  853. Phaser.QuadTree.prototype.constructor = Phaser.QuadTree;
    854. 

  854. </pre>
    855. 

  855.         </article>
    856. 

  856.     </section>
    857. 

  857. 

  858. 

  859. 

  860. 

  861. 

  862. 				</div>
    863. 

  863. 

  864. 				<div class="clearfix"></div>
    865. 

  865. 				<footer>
    866. 

  866. 					
    867. 

  867. 					
    868. 

  868. 		<span class="copyright">
    869. 

  869. 		Phaser Copyright © 2012-2014 Photon Storm Ltd.
    870. 

  870. 		</span>
    871. 

  871. 					<br />
    872. 

  872. 					
    873. 

  873. 		<span class="jsdoc-message">
    874. 

  874. 		Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.3.0-dev</a>
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  875. 		on Fri Apr 11 2014 13:25:03 GMT+0100 (BST) using the <a href="https://github.com/terryweiss/docstrap">DocStrap template</a>.
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  877. 				</footer>
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  878. 			</div>
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  879. 

  880. 			
    881. 

  881. 			<br clear="both">
    882. 

  882. 		</div>
    883. 

  883. 

  884. 	</div>
    885. 

  885. 	<script src="scripts/sunlight.js"></script>
    886. 

  886. 	<script src="scripts/sunlight.javascript.js"></script>
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  887. 	<script src="scripts/sunlight-plugin.doclinks.js"></script>
    888. 

  888. 	<script src="scripts/sunlight-plugin.linenumbers.js"></script>
    889. 

  889. 	<script src="scripts/sunlight-plugin.menu.js"></script>
    890. 

  890. 	<script src="scripts/jquery.min.js"></script>
    891. 

  891. 	<script src="scripts/jquery.scrollTo.js"></script>
    892. 

  892. 	<script src="scripts/jquery.localScroll.js"></script>
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    898. 

  898. 

  899. 	<script>
    900. 

  900. 		$( function () {
    901. 

  901. 			$( "#toc" ).toc( {
    902. 

  902. 				anchorName  : function(i, heading, prefix) {
    903. 

  903. 					return $(heading).attr("id") || ( prefix + i );
    904. 

  904. 				},
    905. 

  905. 				selectors   : "h1,h2,h3,h4",
    906. 

  906. 				showAndHide : false,
    907. 

  907. 				scrollTo    : 60
    908. 

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  917. </body>
    918. 

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    919. 

  919.