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< h1 class = "page-title" > Class: QuadTree< / h1 >
< section >
< header >
< h2 >
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< span class = "ancestors" > < a href = "Phaser.html" > Phaser< / a > .< / span >
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QuadTree
< / h2 >
< div class = "class-description" > < p > A QuadTree implementation. The original code was a conversion of the Java code posted to GameDevTuts. However I've tweaked
it massively to add node indexing, removed lots of temp. var creation and significantly increased performance as a result. Original version at < a href = "https://github.com/timohausmann/quadtree-js/" > https://github.com/timohausmann/quadtree-js/< / a > < / p > < / div >
< / header >
< article >
< div class = "container-overview" >
< dt >
< h4 class = "name" id = "QuadTree" > < span class = "type-signature" > < / span > new QuadTree< span class = "signature" > (physicsManager, x, y, width, height, maxObjects, maxLevels, level)< / span > < span class = "type-signature" > < / span > < / h4 >
< / dt >
< dd >
< div class = "description" >
< p > QuadTree Constructor< / p >
< / div >
< h5 > Parameters:< / h5 >
< table class = "params table table-striped" >
< thead >
< tr >
< th > Name< / th >
< th > Type< / th >
< th class = "last" > Description< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td class = "name" > < code > physicsManager< / code > < / td >
< td class = "type" >
< span class = "param-type" > Description< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< tr >
< td class = "name" > < code > x< / code > < / td >
< td class = "type" >
< span class = "param-type" > Description< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< tr >
< td class = "name" > < code > y< / code > < / td >
< td class = "type" >
< span class = "param-type" > Description< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< tr >
< td class = "name" > < code > width< / code > < / td >
< td class = "type" >
< span class = "param-type" > number< / span >
< / td >
< td class = "description last" > < p > The width of your game in game pixels.< / p > < / td >
< / tr >
< tr >
< td class = "name" > < code > height< / code > < / td >
< td class = "type" >
< span class = "param-type" > number< / span >
< / td >
< td class = "description last" > < p > The height of your game in game pixels.< / p > < / td >
< / tr >
< tr >
< td class = "name" > < code > maxObjects< / code > < / td >
< td class = "type" >
< span class = "param-type" > number< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< tr >
< td class = "name" > < code > maxLevels< / code > < / td >
< td class = "type" >
< span class = "param-type" > number< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< tr >
< td class = "name" > < code > level< / code > < / td >
< td class = "type" >
< span class = "param-type" > number< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< / tbody >
< / table >
< dl class = "details" >
< dt class = "tag-source" > Source:< / dt >
< dd class = "tag-source" > < ul class = "dummy" > < li >
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< a href = "QuadTree.js.html" > math/QuadTree.js< / a > , < a href = "QuadTree.js.html#sunlight-1-line-60" > line 60< / a >
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< / li > < / ul > < / dd >
< / dl >
< / dd >
< / div >
< h3 class = "subsection-title" > Methods< / h3 >
< dl >
< dt >
< h4 class = "name" id = "clear" > < span class = "type-signature" > < / span > clear< span class = "signature" > ()< / span > < span class = "type-signature" > < / span > < / h4 >
< / dt >
< dd >
< div class = "description" >
< p > /*
Clear the quadtree.< / p >
< / div >
< dl class = "details" >
< dt class = "tag-source" > Source:< / dt >
< dd class = "tag-source" > < ul class = "dummy" > < li >
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< a href = "QuadTree.js.html" > math/QuadTree.js< / a > , < a href = "QuadTree.js.html#sunlight-1-line-245" > line 245< / a >
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< / li > < / ul > < / dd >
< / dl >
< / dd >
< dt >
< h4 class = "name" id = "getIndex" > < span class = "type-signature" > < / span > getIndex< span class = "signature" > (rect)< / span > < span class = "type-signature" > → {number}< / span > < / h4 >
< / dt >
< dd >
< div class = "description" >
< p > /*
Determine which node the object belongs to.< / p >
< / div >
< h5 > Parameters:< / h5 >
< table class = "params table table-striped" >
< thead >
< tr >
< th > Name< / th >
< th > Type< / th >
< th class = "last" > Description< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td class = "name" > < code > rect< / code > < / td >
< td class = "type" >
< span class = "param-type" > object< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< / tbody >
< / table >
< dl class = "details" >
< dt class = "tag-source" > Source:< / dt >
< dd class = "tag-source" > < ul class = "dummy" > < li >
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< a href = "QuadTree.js.html" > math/QuadTree.js< / a > , < a href = "QuadTree.js.html#sunlight-1-line-164" > line 164< / a >
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< / li > < / ul > < / dd >
< / dl >
< h5 > Returns:< / h5 >
< div class = "param-desc" >
< p > index - Index of the subnode (0-3), or -1 if rect cannot completely fit within a subnode and is part of the parent node.< / p >
< / div >
< dl >
< dt >
Type
< / dt >
< dd >
< span class = "param-type" > number< / span >
< / dd >
< / dl >
< / dd >
< dt >
< h4 class = "name" id = "insert" > < span class = "type-signature" > < / span > insert< span class = "signature" > (body)< / span > < span class = "type-signature" > < / span > < / h4 >
< / dt >
< dd >
< div class = "description" >
< p > /*
Insert the object into the node. If the node
exceeds the capacity, it will split and add all
objects to their corresponding subnodes.< / p >
< / div >
< h5 > Parameters:< / h5 >
< table class = "params table table-striped" >
< thead >
< tr >
< th > Name< / th >
< th > Type< / th >
< th class = "last" > Description< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td class = "name" > < code > body< / code > < / td >
< td class = "type" >
< span class = "param-type" > object< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< / tbody >
< / table >
< dl class = "details" >
< dt class = "tag-source" > Source:< / dt >
< dd class = "tag-source" > < ul class = "dummy" > < li >
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< a href = "QuadTree.js.html" > math/QuadTree.js< / a > , < a href = "QuadTree.js.html#sunlight-1-line-111" > line 111< / a >
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< / li > < / ul > < / dd >
< / dl >
< / dd >
< dt >
< h4 class = "name" id = "retrieve" > < span class = "type-signature" > < / span > retrieve< span class = "signature" > (rect)< / span > < span class = "type-signature" > → {array}< / span > < / h4 >
< / dt >
< dd >
< div class = "description" >
< p > /*
Return all objects that could collide with the given object.< / p >
< / div >
< h5 > Parameters:< / h5 >
< table class = "params table table-striped" >
< thead >
< tr >
< th > Name< / th >
< th > Type< / th >
< th class = "last" > Description< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td class = "name" > < code > rect< / code > < / td >
< td class = "type" >
< span class = "param-type" > object< / span >
< / td >
< td class = "description last" > < p > Description.< / p > < / td >
< / tr >
< / tbody >
< / table >
< dl class = "details" >
< dt class = "tag-source" > Source:< / dt >
< dd class = "tag-source" > < ul class = "dummy" > < li >
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< a href = "QuadTree.js.html" > math/QuadTree.js< / a > , < a href = "QuadTree.js.html#sunlight-1-line-208" > line 208< / a >
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< / li > < / ul > < / dd >
< / dl >
< h5 > Returns:< / h5 >
< div class = "param-desc" >
< ul >
< li > Array with all detected objects.< / li >
< / ul >
< / div >
< dl >
< dt >
Type
< / dt >
< dd >
< span class = "param-type" > array< / span >
< / dd >
< / dl >
< / dd >
< dt >
< h4 class = "name" id = "split" > < span class = "type-signature" > < / span > split< span class = "signature" > ()< / span > < span class = "type-signature" > < / span > < / h4 >
< / dt >
< dd >
< div class = "description" >
< p > /*
Split the node into 4 subnodes< / p >
< / div >
< dl class = "details" >
< dt class = "tag-source" > Source:< / dt >
< dd class = "tag-source" > < ul class = "dummy" > < li >
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< a href = "QuadTree.js.html" > math/QuadTree.js< / a > , < a href = "QuadTree.js.html#sunlight-1-line-88" > line 88< / a >
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< script src = "scripts/jquery.scrollTo.js" > < / script >
< script src = "scripts/jquery.localScroll.js" > < / script >
< script src = "scripts/bootstrap-dropdown.js" > < / script >
< script src = "scripts/toc.js" > < / script >
< script > Sunlight . highlightAll ( { lineNumbers : true , showMenu : true , enableDoclinks : true } ) ; < / script >
< script >
$( function () {
$( "#toc" ).toc( {
selectors : "h1,h2,h3,h4",
showAndHide : false,
scrollTo : 60
} );
$( "#toc>ul" ).addClass( "nav nav-pills nav-stacked" );
$( "#main span[id^='toc']" ).addClass( "toc-shim" );
} );
< / script >
< / body >
< / html >
