jquery.throwable.js

/* 
 * throwable
 * JQuery plugin 
 */
 
 /**------------------------------------**/
//              CREDITS
/**------------------------------------**/
/*
 - Mr. Doobs :: http://mrdoob.com/92/Google_Gravity
 - Alex Arnell's inheritance.js :: http://code.google.com/p/inheritance/
 - Box2Djs :: http://box2d-js.sourceforge.net/
*/

/**
 * JQuery throwable plugin
 * @param {type} $
 * @param {type} window
 * @param {type} document
 * @param {type} undefined
 * @returns {undefined}
 */
(function($, window, document, undefined) {
    
/********* libraries *********/
    
/* Based on Alex Arnell's inheritance implementation. */
    
function $A(e){if(!e)return[];if(e.toArray)return e.toArray();var t=e.length||0,n=new Array(t);while(t--)n[t]=e[t];return n}var Class={create:function(){function n(){this.initialize.apply(this,arguments)}var e=null,t=$A(arguments);if($.isFunction(t[0]))e=t.shift();Object.extend(n,Class.Methods);n.superclass=e;n.subclasses=[];if(e){var r=function(){};r.prototype=e.prototype;n.prototype=new r;e.subclasses.push(n)}for(var i=0;i<t.length;i++)n.addMethods(t[i]);if(!n.prototype.initialize)n.prototype.initialize=this.emptyFunction;n.prototype.constructor=n;return n},emptyFunction:function(){}};Class.Methods={addMethods:function(e){var t=this.superclass&&this.superclass.prototype;var n=Object.keys(e);if(!Object.keys({toString:true}).length)n.push("toString","valueOf");for(var r=0,i=n.length;r<i;r++){var s=n[r],o=e[s];if(t&&$.isFunction(o)&&o.argumentNames().first()=="$super"){var u=o,o=Object.extend(function(e){return function(){return t[e].apply(this,arguments)}}(s).wrap(u),{valueOf:function(){return u},toString:function(){return u.toString()}})}this.prototype[s]=o}return this}};Object.extend=function(e,t){for(var n in t)e[n]=t[n];return e};Object.extend(Object,{inspect:function(e){try{if(Object.isUndefined(e))return"undefined";if(e===null)return"null";return e.inspect?e.inspect():String(e)}catch(t){if(t instanceof RangeError)return"...";throw t}},toJSON:function(e){var t=typeof e;switch(t){case"undefined":case"function":case"unknown":return;case"boolean":return e.toString()}if(e===null)return"null";if(e.toJSON)return e.toJSON();if(Object.isElement(e))return;var n=[];for(var r in e){var i=Object.toJSON(e[r]);if(!Object.isUndefined(i))n.push(r.toJSON()+": "+i)}return"{"+n.join(", ")+"}"},toQueryString:function(e){return $H(e).toQueryString()},toHTML:function(e){return e&&e.toHTML?e.toHTML():String.interpret(e)},keys:function(e){var t=[];for(var n in e)t.push(n);return t},values:function(e){var t=[];for(var n in e)t.push(e[n]);return t},clone:function(e){return Object.extend({},e)},isElement:function(e){return e&&e.nodeType==1},isHash:function(e){return e instanceof Hash},isString:function(e){return typeof e=="string"},isUndefined:function(e){return typeof e=="undefined"}})

			if (WebKit = navigator.userAgent.indexOf('AppleWebKit/index.html') > -1) {
			  $A = function(iterable) {
			    if (!iterable) return [];
			    if (!($.isFunction(iterable) && iterable == '[object NodeList]') &&
				iterable.toArray) return iterable.toArray();
			    var length = iterable.length || 0, results = new Array(length);
			    while (length--) results[length] = iterable[length];
			    return results;
			  };
			}

///==============================================================================================
    /* 
    * Box2Djs 
    * Minified version
    */
    var b2Settings=Class.create();b2Settings.prototype={initialize:function(){}};b2Settings.USHRT_MAX=65535;b2Settings.b2_pi=Math.PI;b2Settings.b2_massUnitsPerKilogram=1;b2Settings.b2_timeUnitsPerSecond=1;b2Settings.b2_lengthUnitsPerMeter=30;b2Settings.b2_maxManifoldPoints=2;b2Settings.b2_maxShapesPerBody=64;b2Settings.b2_maxPolyVertices=8;b2Settings.b2_maxProxies=1024;b2Settings.b2_maxPairs=8*b2Settings.b2_maxProxies;b2Settings.b2_linearSlop=.005*b2Settings.b2_lengthUnitsPerMeter;b2Settings.b2_angularSlop=2/180*b2Settings.b2_pi;b2Settings.b2_velocityThreshold=1*b2Settings.b2_lengthUnitsPerMeter/b2Settings.b2_timeUnitsPerSecond;b2Settings.b2_maxLinearCorrection=.2*b2Settings.b2_lengthUnitsPerMeter;b2Settings.b2_maxAngularCorrection=8/180*b2Settings.b2_pi;b2Settings.b2_contactBaumgarte=.2;b2Settings.b2_timeToSleep=.5*b2Settings.b2_timeUnitsPerSecond;b2Settings.b2_linearSleepTolerance=.01*b2Settings.b2_lengthUnitsPerMeter/b2Settings.b2_timeUnitsPerSecond;b2Settings.b2_angularSleepTolerance=2/180/b2Settings.b2_timeUnitsPerSecond;b2Settings.b2Assert=function(e){if(!e){var t;t.x++}};var b2Vec2=Class.create();b2Vec2.prototype={initialize:function(e,t){this.x=e;this.y=t},SetZero:function(){this.x=0;this.y=0},Set:function(e,t){this.x=e;this.y=t},SetV:function(e){this.x=e.x;this.y=e.y},Negative:function(){return new b2Vec2(-this.x,-this.y)},Copy:function(){return new b2Vec2(this.x,this.y)},Add:function(e){this.x+=e.x;this.y+=e.y},Subtract:function(e){this.x-=e.x;this.y-=e.y},Multiply:function(e){this.x*=e;this.y*=e},MulM:function(e){var t=this.x;this.x=e.col1.x*t+e.col2.x*this.y;this.y=e.col1.y*t+e.col2.y*this.y},MulTM:function(e){var t=b2Math.b2Dot(this,e.col1);this.y=b2Math.b2Dot(this,e.col2);this.x=t},CrossVF:function(e){var t=this.x;this.x=e*this.y;this.y=-e*t},CrossFV:function(e){var t=this.x;this.x=-e*this.y;this.y=e*t},MinV:function(e){this.x=this.x<e.x?this.x:e.x;this.y=this.y<e.y?this.y:e.y},MaxV:function(e){this.x=this.x>e.x?this.x:e.x;this.y=this.y>e.y?this.y:e.y},Abs:function(){this.x=Math.abs(this.x);this.y=Math.abs(this.y)},Length:function(){return Math.sqrt(this.x*this.x+this.y*this.y)},Normalize:function(){var e=this.Length();if(e<Number.MIN_VALUE){return 0}var t=1/e;this.x*=t;this.y*=t;return e},IsValid:function(){return b2Math.b2IsValid(this.x)&&b2Math.b2IsValid(this.y)},x:null,y:null};b2Vec2.Make=function(e,t){return new b2Vec2(e,t)};var b2Mat22=Class.create();b2Mat22.prototype={initialize:function(e,t,n){if(e==null)e=0;this.col1=new b2Vec2;this.col2=new b2Vec2;if(t!=null&&n!=null){this.col1.SetV(t);this.col2.SetV(n)}else{var r=Math.cos(e);var i=Math.sin(e);this.col1.x=r;this.col2.x=-i;this.col1.y=i;this.col2.y=r}},Set:function(e){var t=Math.cos(e);var n=Math.sin(e);this.col1.x=t;this.col2.x=-n;this.col1.y=n;this.col2.y=t},SetVV:function(e,t){this.col1.SetV(e);this.col2.SetV(t)},Copy:function(){return new b2Mat22(0,this.col1,this.col2)},SetM:function(e){this.col1.SetV(e.col1);this.col2.SetV(e.col2)},AddM:function(e){this.col1.x+=e.col1.x;this.col1.y+=e.col1.y;this.col2.x+=e.col2.x;this.col2.y+=e.col2.y},SetIdentity:function(){this.col1.x=1;this.col2.x=0;this.col1.y=0;this.col2.y=1},SetZero:function(){this.col1.x=0;this.col2.x=0;this.col1.y=0;this.col2.y=0},Invert:function(e){var t=this.col1.x;var n=this.col2.x;var r=this.col1.y;var i=this.col2.y;var s=t*i-n*r;s=1/s;e.col1.x=s*i;e.col2.x=-s*n;e.col1.y=-s*r;e.col2.y=s*t;return e},Solve:function(e,t,n){var r=this.col1.x;var i=this.col2.x;var s=this.col1.y;var o=this.col2.y;var u=r*o-i*s;u=1/u;e.x=u*(o*t-i*n);e.y=u*(r*n-s*t);return e},Abs:function(){this.col1.Abs();this.col2.Abs()},col1:new b2Vec2,col2:new b2Vec2};var b2Math=Class.create();b2Math.prototype={initialize:function(){}};b2Math.b2IsValid=function(e){return isFinite(e)};b2Math.b2Dot=function(e,t){return e.x*t.x+e.y*t.y};b2Math.b2CrossVV=function(e,t){return e.x*t.y-e.y*t.x};b2Math.b2CrossVF=function(e,t){var n=new b2Vec2(t*e.y,-t*e.x);return n};b2Math.b2CrossFV=function(e,t){var n=new b2Vec2(-e*t.y,e*t.x);return n};b2Math.b2MulMV=function(e,t){var n=new b2Vec2(e.col1.x*t.x+e.col2.x*t.y,e.col1.y*t.x+e.col2.y*t.y);return n};b2Math.b2MulTMV=function(e,t){var n=new b2Vec2(b2Math.b2Dot(t,e.col1),b2Math.b2Dot(t,e.col2));return n};b2Math.AddVV=function(e,t){var n=new b2Vec2(e.x+t.x,e.y+t.y);return n};b2Math.SubtractVV=function(e,t){var n=new b2Vec2(e.x-t.x,e.y-t.y);return n};b2Math.MulFV=function(e,t){var n=new b2Vec2(e*t.x,e*t.y);return n};b2Math.AddMM=function(e,t){var n=new b2Mat22(0,b2Math.AddVV(e.col1,t.col1),b2Math.AddVV(e.col2,t.col2));return n};b2Math.b2MulMM=function(e,t){var n=new b2Mat22(0,b2Math.b2MulMV(e,t.col1),b2Math.b2MulMV(e,t.col2));return n};b2Math.b2MulTMM=function(e,t){var n=new b2Vec2(b2Math.b2Dot(e.col1,t.col1),b2Math.b2Dot(e.col2,t.col1));var r=new b2Vec2(b2Math.b2Dot(e.col1,t.col2),b2Math.b2Dot(e.col2,t.col2));var i=new b2Mat22(0,n,r);return i};b2Math.b2Abs=function(e){return e>0?e:-e};b2Math.b2AbsV=function(e){var t=new b2Vec2(b2Math.b2Abs(e.x),b2Math.b2Abs(e.y));return t};b2Math.b2AbsM=function(e){var t=new b2Mat22(0,b2Math.b2AbsV(e.col1),b2Math.b2AbsV(e.col2));return t};b2Math.b2Min=function(e,t){return e<t?e:t};b2Math.b2MinV=function(e,t){var n=new b2Vec2(b2Math.b2Min(e.x,t.x),b2Math.b2Min(e.y,t.y));return n};b2Math.b2Max=function(e,t){return e>t?e:t};b2Math.b2MaxV=function(e,t){var n=new b2Vec2(b2Math.b2Max(e.x,t.x),b2Math.b2Max(e.y,t.y));return n};b2Math.b2Clamp=function(e,t,n){return b2Math.b2Max(t,b2Math.b2Min(e,n))};b2Math.b2ClampV=function(e,t,n){return b2Math.b2MaxV(t,b2Math.b2MinV(e,n))};b2Math.b2Swap=function(e,t){var n=e[0];e[0]=t[0];t[0]=n};b2Math.b2Random=function(){return Math.random()*2-1};b2Math.b2NextPowerOfTwo=function(e){e|=e>>1&2147483647;e|=e>>2&1073741823;e|=e>>4&268435455;e|=e>>8&16777215;e|=e>>16&65535;return e+1};b2Math.b2IsPowerOfTwo=function(e){var t=e>0&&(e&e-1)==0;return t};b2Math.tempVec2=new b2Vec2;b2Math.tempVec3=new b2Vec2;b2Math.tempVec4=new b2Vec2;b2Math.tempVec5=new b2Vec2;b2Math.tempMat=new b2Mat22;var b2AABB=Class.create();b2AABB.prototype={IsValid:function(){var e=this.maxVertex.x;var t=this.maxVertex.y;e=this.maxVertex.x;t=this.maxVertex.y;e-=this.minVertex.x;t-=this.minVertex.y;var n=e>=0&&t>=0;n=n&&this.minVertex.IsValid()&&this.maxVertex.IsValid();return n},minVertex:new b2Vec2,maxVertex:new b2Vec2,initialize:function(){this.minVertex=new b2Vec2;this.maxVertex=new b2Vec2}};var b2Bound=Class.create();b2Bound.prototype={IsLower:function(){return(this.value&1)==0},IsUpper:function(){return(this.value&1)==1},Swap:function(e){var t=this.value;var n=this.proxyId;var r=this.stabbingCount;this.value=e.value;this.proxyId=e.proxyId;this.stabbingCount=e.stabbingCount;e.value=t;e.proxyId=n;e.stabbingCount=r},value:0,proxyId:0,stabbingCount:0,initialize:function(){}};var b2BoundValues=Class.create();b2BoundValues.prototype={lowerValues:[0,0],upperValues:[0,0],initialize:function(){this.lowerValues=[0,0];this.upperValues=[0,0]}};var b2Pair=Class.create();b2Pair.prototype={SetBuffered:function(){this.status|=b2Pair.e_pairBuffered},ClearBuffered:function(){this.status&=~b2Pair.e_pairBuffered},IsBuffered:function(){return(this.status&b2Pair.e_pairBuffered)==b2Pair.e_pairBuffered},SetRemoved:function(){this.status|=b2Pair.e_pairRemoved},ClearRemoved:function(){this.status&=~b2Pair.e_pairRemoved},IsRemoved:function(){return(this.status&b2Pair.e_pairRemoved)==b2Pair.e_pairRemoved},SetFinal:function(){this.status|=b2Pair.e_pairFinal},IsFinal:function(){return(this.status&b2Pair.e_pairFinal)==b2Pair.e_pairFinal},userData:null,proxyId1:0,proxyId2:0,next:0,status:0,initialize:function(){}};b2Pair.b2_nullPair=b2Settings.USHRT_MAX;b2Pair.b2_nullProxy=b2Settings.USHRT_MAX;b2Pair.b2_tableCapacity=b2Settings.b2_maxPairs;b2Pair.b2_tableMask=b2Pair.b2_tableCapacity-1;b2Pair.e_pairBuffered=1;b2Pair.e_pairRemoved=2;b2Pair.e_pairFinal=4;var b2PairCallback=Class.create();b2PairCallback.prototype={PairAdded:function(e,t){return null},PairRemoved:function(e,t,n){},initialize:function(){}};var b2BufferedPair=Class.create();b2BufferedPair.prototype={proxyId1:0,proxyId2:0,initialize:function(){}};var b2PairManager=Class.create();b2PairManager.prototype={initialize:function(){var e=0;this.m_hashTable=new Array(b2Pair.b2_tableCapacity);for(e=0;e<b2Pair.b2_tableCapacity;++e){this.m_hashTable[e]=b2Pair.b2_nullPair}this.m_pairs=new Array(b2Settings.b2_maxPairs);for(e=0;e<b2Settings.b2_maxPairs;++e){this.m_pairs[e]=new b2Pair}this.m_pairBuffer=new Array(b2Settings.b2_maxPairs);for(e=0;e<b2Settings.b2_maxPairs;++e){this.m_pairBuffer[e]=new b2BufferedPair}for(e=0;e<b2Settings.b2_maxPairs;++e){this.m_pairs[e].proxyId1=b2Pair.b2_nullProxy;this.m_pairs[e].proxyId2=b2Pair.b2_nullProxy;this.m_pairs[e].userData=null;this.m_pairs[e].status=0;this.m_pairs[e].next=e+1}this.m_pairs[b2Settings.b2_maxPairs-1].next=b2Pair.b2_nullPair;this.m_pairCount=0},Initialize:function(e,t){this.m_broadPhase=e;this.m_callback=t},AddBufferedPair:function(e,t){var n=this.AddPair(e,t);if(n.IsBuffered()==false){n.SetBuffered();this.m_pairBuffer[this.m_pairBufferCount].proxyId1=n.proxyId1;this.m_pairBuffer[this.m_pairBufferCount].proxyId2=n.proxyId2;++this.m_pairBufferCount}n.ClearRemoved();if(b2BroadPhase.s_validate){this.ValidateBuffer()}},RemoveBufferedPair:function(e,t){var n=this.Find(e,t);if(n==null){return}if(n.IsBuffered()==false){n.SetBuffered();this.m_pairBuffer[this.m_pairBufferCount].proxyId1=n.proxyId1;this.m_pairBuffer[this.m_pairBufferCount].proxyId2=n.proxyId2;++this.m_pairBufferCount}n.SetRemoved();if(b2BroadPhase.s_validate){this.ValidateBuffer()}},Commit:function(){var e=0;var t=0;var n=this.m_broadPhase.m_proxyPool;for(e=0;e<this.m_pairBufferCount;++e){var r=this.Find(this.m_pairBuffer[e].proxyId1,this.m_pairBuffer[e].proxyId2);r.ClearBuffered();var i=n[r.proxyId1];var s=n[r.proxyId2];if(r.IsRemoved()){if(r.IsFinal()==true){this.m_callback.PairRemoved(i.userData,s.userData,r.userData)}this.m_pairBuffer[t].proxyId1=r.proxyId1;this.m_pairBuffer[t].proxyId2=r.proxyId2;++t}else{if(r.IsFinal()==false){r.userData=this.m_callback.PairAdded(i.userData,s.userData);r.SetFinal()}}}for(e=0;e<t;++e){this.RemovePair(this.m_pairBuffer[e].proxyId1,this.m_pairBuffer[e].proxyId2)}this.m_pairBufferCount=0;if(b2BroadPhase.s_validate){this.ValidateTable()}},AddPair:function(e,t){if(e>t){var n=e;e=t;t=n}var r=b2PairManager.Hash(e,t)&b2Pair.b2_tableMask;var i=i=this.FindHash(e,t,r);if(i!=null){return i}var s=this.m_freePair;i=this.m_pairs[s];this.m_freePair=i.next;i.proxyId1=e;i.proxyId2=t;i.status=0;i.userData=null;i.next=this.m_hashTable[r];this.m_hashTable[r]=s;++this.m_pairCount;return i},RemovePair:function(e,t){if(e>t){var n=e;e=t;t=n}var r=b2PairManager.Hash(e,t)&b2Pair.b2_tableMask;var i=this.m_hashTable[r];var s=null;while(i!=b2Pair.b2_nullPair){if(b2PairManager.Equals(this.m_pairs[i],e,t)){var o=i;if(s){s.next=this.m_pairs[i].next}else{this.m_hashTable[r]=this.m_pairs[i].next}var u=this.m_pairs[o];var a=u.userData;u.next=this.m_freePair;u.proxyId1=b2Pair.b2_nullProxy;u.proxyId2=b2Pair.b2_nullProxy;u.userData=null;u.status=0;this.m_freePair=o;--this.m_pairCount;return a}else{s=this.m_pairs[i];i=s.next}}return null},Find:function(e,t){if(e>t){var n=e;e=t;t=n}var r=b2PairManager.Hash(e,t)&b2Pair.b2_tableMask;return this.FindHash(e,t,r)},FindHash:function(e,t,n){var r=this.m_hashTable[n];while(r!=b2Pair.b2_nullPair&&b2PairManager.Equals(this.m_pairs[r],e,t)==false){r=this.m_pairs[r].next}if(r==b2Pair.b2_nullPair){return null}return this.m_pairs[r]},ValidateBuffer:function(){},ValidateTable:function(){},m_broadPhase:null,m_callback:null,m_pairs:null,m_freePair:0,m_pairCount:0,m_pairBuffer:null,m_pairBufferCount:0,m_hashTable:null};b2PairManager.Hash=function(e,t){var n=t<<16&4294901760|e;n=~n+(n<<15&4294934528);n=n^n>>12&1048575;n=n+(n<<2&4294967292);n=n^n>>4&268435455;n=n*2057;n=n^n>>16&65535;return n};b2PairManager.Equals=function(e,t,n){return e.proxyId1==t&&e.proxyId2==n};b2PairManager.EqualsPair=function(e,t){return e.proxyId1==t.proxyId1&&e.proxyId2==t.proxyId2};var b2BroadPhase=Class.create();b2BroadPhase.prototype={initialize:function(e,t){this.m_pairManager=new b2PairManager;this.m_proxyPool=new Array(b2Settings.b2_maxPairs);this.m_bounds=new Array(2*b2Settings.b2_maxProxies);this.m_queryResults=new Array(b2Settings.b2_maxProxies);this.m_quantizationFactor=new b2Vec2;var n=0;this.m_pairManager.Initialize(this,t);this.m_worldAABB=e;this.m_proxyCount=0;for(n=0;n<b2Settings.b2_maxProxies;n++){this.m_queryResults[n]=0}this.m_bounds=new Array(2);for(n=0;n<2;n++){this.m_bounds[n]=new Array(2*b2Settings.b2_maxProxies);for(var r=0;r<2*b2Settings.b2_maxProxies;r++){this.m_bounds[n][r]=new b2Bound}}var i=e.maxVertex.x;var s=e.maxVertex.y;i-=e.minVertex.x;s-=e.minVertex.y;this.m_quantizationFactor.x=b2Settings.USHRT_MAX/i;this.m_quantizationFactor.y=b2Settings.USHRT_MAX/s;var o;for(n=0;n<b2Settings.b2_maxProxies-1;++n){o=new b2Proxy;this.m_proxyPool[n]=o;o.SetNext(n+1);o.timeStamp=0;o.overlapCount=b2BroadPhase.b2_invalid;o.userData=null}o=new b2Proxy;this.m_proxyPool[b2Settings.b2_maxProxies-1]=o;o.SetNext(b2Pair.b2_nullProxy);o.timeStamp=0;o.overlapCount=b2BroadPhase.b2_invalid;o.userData=null;this.m_freeProxy=0;this.m_timeStamp=1;this.m_queryResultCount=0},InRange:function(e){var t;var n;var r;var i;t=e.minVertex.x;n=e.minVertex.y;t-=this.m_worldAABB.maxVertex.x;n-=this.m_worldAABB.maxVertex.y;r=this.m_worldAABB.minVertex.x;i=this.m_worldAABB.minVertex.y;r-=e.maxVertex.x;i-=e.maxVertex.y;t=b2Math.b2Max(t,r);n=b2Math.b2Max(n,i);return b2Math.b2Max(t,n)<0},GetProxy:function(e){if(e==b2Pair.b2_nullProxy||this.m_proxyPool[e].IsValid()==false){return null}return this.m_proxyPool[e]},CreateProxy:function(e,t){var n=0;var r;var i=this.m_freeProxy;r=this.m_proxyPool[i];this.m_freeProxy=r.GetNext();r.overlapCount=0;r.userData=t;var s=2*this.m_proxyCount;var o=new Array;var u=new Array;this.ComputeBounds(o,u,e);for(var a=0;a<2;++a){var f=this.m_bounds[a];var l=0;var c=0;var h=[l];var p=[c];this.Query(h,p,o[a],u[a],f,s,a);l=h[0];c=p[0];var d=new Array;var v=0;var m=s-c;var g;var y;for(v=0;v<m;v++){d[v]=new b2Bound;g=d[v];y=f[c+v];g.value=y.value;g.proxyId=y.proxyId;g.stabbingCount=y.stabbingCount}m=d.length;var b=c+2;for(v=0;v<m;v++){y=d[v];g=f[b+v];g.value=y.value;g.proxyId=y.proxyId;g.stabbingCount=y.stabbingCount}d=new Array;m=c-l;for(v=0;v<m;v++){d[v]=new b2Bound;g=d[v];y=f[l+v];g.value=y.value;g.proxyId=y.proxyId;g.stabbingCount=y.stabbingCount}m=d.length;b=l+1;for(v=0;v<m;v++){y=d[v];g=f[b+v];g.value=y.value;g.proxyId=y.proxyId;g.stabbingCount=y.stabbingCount}++c;f[l].value=o[a];f[l].proxyId=i;f[c].value=u[a];f[c].proxyId=i;f[l].stabbingCount=l==0?0:f[l-1].stabbingCount;f[c].stabbingCount=f[c-1].stabbingCount;for(n=l;n<c;++n){f[n].stabbingCount++}for(n=l;n<s+2;++n){var w=this.m_proxyPool[f[n].proxyId];if(f[n].IsLower()){w.lowerBounds[a]=n}else{w.upperBounds[a]=n}}}++this.m_proxyCount;for(var E=0;E<this.m_queryResultCount;++E){this.m_pairManager.AddBufferedPair(i,this.m_queryResults[E])}this.m_pairManager.Commit();this.m_queryResultCount=0;this.IncrementTimeStamp();return i},DestroyProxy:function(e){var t=this.m_proxyPool[e];var n=2*this.m_proxyCount;for(var r=0;r<2;++r){var i=this.m_bounds[r];var s=t.lowerBounds[r];var o=t.upperBounds[r];var u=i[s].value;var a=i[o].value;var f=new Array;var l=0;var c=o-s-1;var h;var p;for(l=0;l<c;l++){f[l]=new b2Bound;h=f[l];p=i[s+1+l];h.value=p.value;h.proxyId=p.proxyId;h.stabbingCount=p.stabbingCount}c=f.length;var d=s;for(l=0;l<c;l++){p=f[l];h=i[d+l];h.value=p.value;h.proxyId=p.proxyId;h.stabbingCount=p.stabbingCount}f=new Array;c=n-o-1;for(l=0;l<c;l++){f[l]=new b2Bound;h=f[l];p=i[o+1+l];h.value=p.value;h.proxyId=p.proxyId;h.stabbingCount=p.stabbingCount}c=f.length;d=o-1;for(l=0;l<c;l++){p=f[l];h=i[d+l];h.value=p.value;h.proxyId=p.proxyId;h.stabbingCount=p.stabbingCount}c=n-2;for(var v=s;v<c;++v){var m=this.m_proxyPool[i[v].proxyId];if(i[v].IsLower()){m.lowerBounds[r]=v}else{m.upperBounds[r]=v}}c=o-1;for(var g=s;g<c;++g){i[g].stabbingCount--}this.Query([0],[0],u,a,i,n-2,r)}for(var y=0;y<this.m_queryResultCount;++y){this.m_pairManager.RemoveBufferedPair(e,this.m_queryResults[y])}this.m_pairManager.Commit();this.m_queryResultCount=0;this.IncrementTimeStamp();t.userData=null;t.overlapCount=b2BroadPhase.b2_invalid;t.lowerBounds[0]=b2BroadPhase.b2_invalid;t.lowerBounds[1]=b2BroadPhase.b2_invalid;t.upperBounds[0]=b2BroadPhase.b2_invalid;t.upperBounds[1]=b2BroadPhase.b2_invalid;t.SetNext(this.m_freeProxy);this.m_freeProxy=e;--this.m_proxyCount},MoveProxy:function(e,t){var n=0;var r=0;var i;var s;var o;var u=0;var a;if(e==b2Pair.b2_nullProxy||b2Settings.b2_maxProxies<=e){return}if(t.IsValid()==false){return}var f=2*this.m_proxyCount;var l=this.m_proxyPool[e];var c=new b2BoundValues;this.ComputeBounds(c.lowerValues,c.upperValues,t);var h=new b2BoundValues;for(n=0;n<2;++n){h.lowerValues[n]=this.m_bounds[n][l.lowerBounds[n]].value;h.upperValues[n]=this.m_bounds[n][l.upperBounds[n]].value}for(n=0;n<2;++n){var p=this.m_bounds[n];var d=l.lowerBounds[n];var v=l.upperBounds[n];var m=c.lowerValues[n];var g=c.upperValues[n];var y=m-p[d].value;var b=g-p[v].value;p[d].value=m;p[v].value=g;if(y<0){r=d;while(r>0&&m<p[r-1].value){i=p[r];s=p[r-1];var w=s.proxyId;var E=this.m_proxyPool[s.proxyId];s.stabbingCount++;if(s.IsUpper()==true){if(this.TestOverlap(c,E)){this.m_pairManager.AddBufferedPair(e,w)}E.upperBounds[n]++;i.stabbingCount++}else{E.lowerBounds[n]++;i.stabbingCount--}l.lowerBounds[n]--;i.Swap(s);--r}}if(b>0){r=v;while(r<f-1&&p[r+1].value<=g){i=p[r];o=p[r+1];u=o.proxyId;a=this.m_proxyPool[u];o.stabbingCount++;if(o.IsLower()==true){if(this.TestOverlap(c,a)){this.m_pairManager.AddBufferedPair(e,u)}a.lowerBounds[n]--;i.stabbingCount++}else{a.upperBounds[n]--;i.stabbingCount--}l.upperBounds[n]++;i.Swap(o);r++}}if(y>0){r=d;while(r<f-1&&p[r+1].value<=m){i=p[r];o=p[r+1];u=o.proxyId;a=this.m_proxyPool[u];o.stabbingCount--;if(o.IsUpper()){if(this.TestOverlap(h,a)){this.m_pairManager.RemoveBufferedPair(e,u)}a.upperBounds[n]--;i.stabbingCount--}else{a.lowerBounds[n]--;i.stabbingCount++}l.lowerBounds[n]++;i.Swap(o);r++}}if(b<0){r=v;while(r>0&&g<p[r-1].value){i=p[r];s=p[r-1];w=s.proxyId;E=this.m_proxyPool[w];s.stabbingCount--;if(s.IsLower()==true){if(this.TestOverlap(h,E)){this.m_pairManager.RemoveBufferedPair(e,w)}E.lowerBounds[n]++;i.stabbingCount--}else{E.upperBounds[n]++;i.stabbingCount++}l.upperBounds[n]--;i.Swap(s);r--}}}},Commit:function(){this.m_pairManager.Commit()},QueryAABB:function(e,t,n){var r=new Array;var i=new Array;this.ComputeBounds(r,i,e);var s=0;var o=0;var u=[s];var a=[o];this.Query(u,a,r[0],i[0],this.m_bounds[0],2*this.m_proxyCount,0);this.Query(u,a,r[1],i[1],this.m_bounds[1],2*this.m_proxyCount,1);var f=0;for(var l=0;l<this.m_queryResultCount&&f<n;++l,++f){var c=this.m_proxyPool[this.m_queryResults[l]];t[l]=c.userData}this.m_queryResultCount=0;this.IncrementTimeStamp();return f},Validate:function(){var e;var t;var n;var r;for(var i=0;i<2;++i){var s=this.m_bounds[i];var o=2*this.m_proxyCount;var u=0;for(var a=0;a<o;++a){var f=s[a];if(f.IsLower()==true){u++}else{u--}}}},ComputeBounds:function(e,t,n){var r=n.minVertex.x;var i=n.minVertex.y;r=b2Math.b2Min(r,this.m_worldAABB.maxVertex.x);i=b2Math.b2Min(i,this.m_worldAABB.maxVertex.y);r=b2Math.b2Max(r,this.m_worldAABB.minVertex.x);i=b2Math.b2Max(i,this.m_worldAABB.minVertex.y);var s=n.maxVertex.x;var o=n.maxVertex.y;s=b2Math.b2Min(s,this.m_worldAABB.maxVertex.x);o=b2Math.b2Min(o,this.m_worldAABB.maxVertex.y);s=b2Math.b2Max(s,this.m_worldAABB.minVertex.x);o=b2Math.b2Max(o,this.m_worldAABB.minVertex.y);e[0]=this.m_quantizationFactor.x*(r-this.m_worldAABB.minVertex.x)&b2Settings.USHRT_MAX-1;t[0]=this.m_quantizationFactor.x*(s-this.m_worldAABB.minVertex.x)&65535|1;e[1]=this.m_quantizationFactor.y*(i-this.m_worldAABB.minVertex.y)&b2Settings.USHRT_MAX-1;t[1]=this.m_quantizationFactor.y*(o-this.m_worldAABB.minVertex.y)&65535|1},TestOverlapValidate:function(e,t){for(var n=0;n<2;++n){var r=this.m_bounds[n];if(r[e.lowerBounds[n]].value>r[t.upperBounds[n]].value)return false;if(r[e.upperBounds[n]].value<r[t.lowerBounds[n]].value)return false}return true},TestOverlap:function(e,t){for(var n=0;n<2;++n){var r=this.m_bounds[n];if(e.lowerValues[n]>r[t.upperBounds[n]].value)return false;if(e.upperValues[n]<r[t.lowerBounds[n]].value)return false}return true},Query:function(e,t,n,r,i,s,o){var u=b2BroadPhase.BinarySearch(i,s,n);var a=b2BroadPhase.BinarySearch(i,s,r);for(var f=u;f<a;++f){if(i[f].IsLower()){this.IncrementOverlapCount(i[f].proxyId)}}if(u>0){var l=u-1;var c=i[l].stabbingCount;while(c){if(i[l].IsLower()){var h=this.m_proxyPool[i[l].proxyId];if(u<=h.upperBounds[o]){this.IncrementOverlapCount(i[l].proxyId);--c}}--l}}e[0]=u;t[0]=a},IncrementOverlapCount:function(e){var t=this.m_proxyPool[e];if(t.timeStamp<this.m_timeStamp){t.timeStamp=this.m_timeStamp;t.overlapCount=1}else{t.overlapCount=2;this.m_queryResults[this.m_queryResultCount]=e;++this.m_queryResultCount}},IncrementTimeStamp:function(){if(this.m_timeStamp==b2Settings.USHRT_MAX){for(var e=0;e<b2Settings.b2_maxProxies;++e){this.m_proxyPool[e].timeStamp=0}this.m_timeStamp=1}else{++this.m_timeStamp}},m_pairManager:new b2PairManager,m_proxyPool:new Array(b2Settings.b2_maxPairs),m_freeProxy:0,m_bounds:new Array(2*b2Settings.b2_maxProxies),m_queryResults:new Array(b2Settings.b2_maxProxies),m_queryResultCount:0,m_worldAABB:null,m_quantizationFactor:new b2Vec2,m_proxyCount:0,m_timeStamp:0};b2BroadPhase.s_validate=false;b2BroadPhase.b2_invalid=b2Settings.USHRT_MAX;b2BroadPhase.b2_nullEdge=b2Settings.USHRT_MAX;b2BroadPhase.BinarySearch=function(e,t,n){var r=0;var i=t-1;while(r<=i){var s=Math.floor((r+i)/2);if(e[s].value>n){i=s-1}else if(e[s].value<n){r=s+1}else{return s}}return r};var b2Collision=Class.create();b2Collision.prototype={initialize:function(){}};b2Collision.b2_nullFeature=255;b2Collision.ClipSegmentToLine=function(e,t,n,r){var i=0;var s=t[0].v;var o=t[1].v;var u=b2Math.b2Dot(n,t[0].v)-r;var a=b2Math.b2Dot(n,t[1].v)-r;if(u<=0)e[i++]=t[0];if(a<=0)e[i++]=t[1];if(u*a<0){var f=u/(u-a);var l=e[i].v;l.x=s.x+f*(o.x-s.x);l.y=s.y+f*(o.y-s.y);if(u>0){e[i].id=t[0].id}else{e[i].id=t[1].id}++i}return i};b2Collision.EdgeSeparation=function(e,t,n){var r=e.m_vertices;var i=n.m_vertexCount;var s=n.m_vertices;var o=e.m_normals[t].x;var u=e.m_normals[t].y;var a=o;var f=e.m_R;o=f.col1.x*a+f.col2.x*u;u=f.col1.y*a+f.col2.y*u;var l=o;var c=u;f=n.m_R;a=l*f.col1.x+c*f.col1.y;c=l*f.col2.x+c*f.col2.y;l=a;var h=0;var p=Number.MAX_VALUE;for(var d=0;d<i;++d){var v=s[d];var m=v.x*l+v.y*c;if(m<p){p=m;h=d}}f=e.m_R;var g=e.m_position.x+(f.col1.x*r[t].x+f.col2.x*r[t].y);var y=e.m_position.y+(f.col1.y*r[t].x+f.col2.y*r[t].y);f=n.m_R;var b=n.m_position.x+(f.col1.x*s[h].x+f.col2.x*s[h].y);var w=n.m_position.y+(f.col1.y*s[h].x+f.col2.y*s[h].y);b-=g;w-=y;var E=b*o+w*u;return E};b2Collision.FindMaxSeparation=function(e,t,n,r){var i=t.m_vertexCount;var s=n.m_position.x-t.m_position.x;var o=n.m_position.y-t.m_position.y;var u=s*t.m_R.col1.x+o*t.m_R.col1.y;var a=s*t.m_R.col2.x+o*t.m_R.col2.y;var f=0;var l=-Number.MAX_VALUE;for(var c=0;c<i;++c){var h=t.m_normals[c].x*u+t.m_normals[c].y*a;if(h>l){l=h;f=c}}var p=b2Collision.EdgeSeparation(t,f,n);if(p>0&&r==false){return p}var d=f-1>=0?f-1:i-1;var v=b2Collision.EdgeSeparation(t,d,n);if(v>0&&r==false){return v}var m=f+1<i?f+1:0;var g=b2Collision.EdgeSeparation(t,m,n);if(g>0&&r==false){return g}var y=0;var b;var w=0;if(v>p&&v>g){w=-1;y=d;b=v}else if(g>p){w=1;y=m;b=g}else{e[0]=f;return p}while(true){if(w==-1)f=y-1>=0?y-1:i-1;else f=y+1<i?y+1:0;p=b2Collision.EdgeSeparation(t,f,n);if(p>0&&r==false){return p}if(p>b){y=f;b=p}else{break}}e[0]=y;return b};b2Collision.FindIncidentEdge=function(e,t,n,r){var i=t.m_vertexCount;var s=t.m_vertices;var o=r.m_vertexCount;var u=r.m_vertices;var a=n;var f=n+1==i?0:n+1;var l=s[f];var c=l.x;var h=l.y;l=s[a];c-=l.x;h-=l.y;var p=c;c=h;h=-p;var d=1/Math.sqrt(c*c+h*h);c*=d;h*=d;var v=c;var m=h;p=v;var g=t.m_R;v=g.col1.x*p+g.col2.x*m;m=g.col1.y*p+g.col2.y*m;var y=v;var b=m;g=r.m_R;p=y*g.col1.x+b*g.col1.y;b=y*g.col2.x+b*g.col2.y;y=p;var w=0;var E=0;var S=Number.MAX_VALUE;for(var x=0;x<o;++x){var T=x;var N=x+1<o?x+1:0;l=u[N];var C=l.x;var k=l.y;l=u[T];C-=l.x;k-=l.y;p=C;C=k;k=-p;d=1/Math.sqrt(C*C+k*k);C*=d;k*=d;var L=C*y+k*b;if(L<S){S=L;w=T;E=N}}var A;A=e[0];l=A.v;l.SetV(u[w]);l.MulM(r.m_R);l.Add(r.m_position);A.id.features.referenceFace=n;A.id.features.incidentEdge=w;A.id.features.incidentVertex=w;A=e[1];l=A.v;l.SetV(u[E]);l.MulM(r.m_R);l.Add(r.m_position);A.id.features.referenceFace=n;A.id.features.incidentEdge=w;A.id.features.incidentVertex=E};b2Collision.b2CollidePolyTempVec=new b2Vec2;b2Collision.b2CollidePoly=function(e,t,n,r){e.pointCount=0;var i=0;var s=[i];var o=b2Collision.FindMaxSeparation(s,t,n,r);i=s[0];if(o>0&&r==false)return;var u=0;var a=[u];var f=b2Collision.FindMaxSeparation(a,n,t,r);u=a[0];if(f>0&&r==false)return;var l;var c;var h=0;var p=0;var d=.98;var v=.001;if(f>d*o+v){l=n;c=t;h=u;p=1}else{l=t;c=n;h=i;p=0}var m=[new ClipVertex,new ClipVertex];b2Collision.FindIncidentEdge(m,l,h,c);var g=l.m_vertexCount;var y=l.m_vertices;var b=y[h];var w=h+1<g?y[h+1]:y[0];var E=w.x-b.x;var S=w.y-b.y;var x=w.x-b.x;var T=w.y-b.y;var N=x;var C=l.m_R;x=C.col1.x*N+C.col2.x*T;T=C.col1.y*N+C.col2.y*T;var k=1/Math.sqrt(x*x+T*T);x*=k;T*=k;var L=x;var A=T;N=L;L=A;A=-N;var O=b.x;var M=b.y;N=O;C=l.m_R;O=C.col1.x*N+C.col2.x*M;M=C.col1.y*N+C.col2.y*M;O+=l.m_position.x;M+=l.m_position.y;var _=w.x;var D=w.y;N=_;C=l.m_R;_=C.col1.x*N+C.col2.x*D;D=C.col1.y*N+C.col2.y*D;_+=l.m_position.x;D+=l.m_position.y;var P=L*O+A*M;var H=-(x*O+T*M);var B=x*_+T*D;var j=[new ClipVertex,new ClipVertex];var F=[new ClipVertex,new ClipVertex];var I=0;b2Collision.b2CollidePolyTempVec.Set(-x,-T);I=b2Collision.ClipSegmentToLine(j,m,b2Collision.b2CollidePolyTempVec,H);if(I<2)return;b2Collision.b2CollidePolyTempVec.Set(x,T);I=b2Collision.ClipSegmentToLine(F,j,b2Collision.b2CollidePolyTempVec,B);if(I<2)return;if(p){e.normal.Set(-L,-A)}else{e.normal.Set(L,A)}var q=0;for(var R=0;R<b2Settings.b2_maxManifoldPoints;++R){var U=F[R].v;var z=L*U.x+A*U.y-P;if(z<=0||r==true){var W=e.points[q];W.separation=z;W.position.SetV(F[R].v);W.id.Set(F[R].id);W.id.features.flip=p;++q}}e.pointCount=q};b2Collision.b2CollideCircle=function(e,t,n,r){e.pointCount=0;var i=n.m_position.x-t.m_position.x;var s=n.m_position.y-t.m_position.y;var o=i*i+s*s;var u=t.m_radius+n.m_radius;if(o>u*u&&r==false){return}var a;if(o<Number.MIN_VALUE){a=-u;e.normal.Set(0,1)}else{var f=Math.sqrt(o);a=f-u;var l=1/f;e.normal.x=l*i;e.normal.y=l*s}e.pointCount=1;var c=e.points[0];c.id.set_key(0);c.separation=a;c.position.x=n.m_position.x-n.m_radius*e.normal.x;c.position.y=n.m_position.y-n.m_radius*e.normal.y};b2Collision.b2CollidePolyAndCircle=function(e,t,n,r){e.pointCount=0;var i;var s;var o;var u=n.m_position.x-t.m_position.x;var a=n.m_position.y-t.m_position.y;var f=t.m_R;var l=u*f.col1.x+a*f.col1.y;a=u*f.col2.x+a*f.col2.y;u=l;var c;var h=0;var p=-Number.MAX_VALUE;var d=n.m_radius;for(var v=0;v<t.m_vertexCount;++v){var m=t.m_normals[v].x*(u-t.m_vertices[v].x)+t.m_normals[v].y*(a-t.m_vertices[v].y);if(m>d){return}if(m>p){p=m;h=v}}if(p<Number.MIN_VALUE){e.pointCount=1;var g=t.m_normals[h];e.normal.x=f.col1.x*g.x+f.col2.x*g.y;e.normal.y=f.col1.y*g.x+f.col2.y*g.y;i=e.points[0];i.id.features.incidentEdge=h;i.id.features.incidentVertex=b2Collision.b2_nullFeature;i.id.features.referenceFace=b2Collision.b2_nullFeature;i.id.features.flip=0;i.position.x=n.m_position.x-d*e.normal.x;i.position.y=n.m_position.y-d*e.normal.y;i.separation=p-d;return}var y=h;var b=y+1<t.m_vertexCount?y+1:0;var w=t.m_vertices[b].x-t.m_vertices[y].x;var E=t.m_vertices[b].y-t.m_vertices[y].y;var S=Math.sqrt(w*w+E*E);w/=S;E/=S;if(S<Number.MIN_VALUE){s=u-t.m_vertices[y].x;o=a-t.m_vertices[y].y;c=Math.sqrt(s*s+o*o);s/=c;o/=c;if(c>d){return}e.pointCount=1;e.normal.Set(f.col1.x*s+f.col2.x*o,f.col1.y*s+f.col2.y*o);i=e.points[0];i.id.features.incidentEdge=b2Collision.b2_nullFeature;i.id.features.incidentVertex=y;i.id.features.referenceFace=b2Collision.b2_nullFeature;i.id.features.flip=0;i.position.x=n.m_position.x-d*e.normal.x;i.position.y=n.m_position.y-d*e.normal.y;i.separation=c-d;return}var x=(u-t.m_vertices[y].x)*w+(a-t.m_vertices[y].y)*E;i=e.points[0];i.id.features.incidentEdge=b2Collision.b2_nullFeature;i.id.features.incidentVertex=b2Collision.b2_nullFeature;i.id.features.referenceFace=b2Collision.b2_nullFeature;i.id.features.flip=0;var T,N;if(x<=0){T=t.m_vertices[y].x;N=t.m_vertices[y].y;i.id.features.incidentVertex=y}else if(x>=S){T=t.m_vertices[b].x;N=t.m_vertices[b].y;i.id.features.incidentVertex=b}else{T=w*x+t.m_vertices[y].x;N=E*x+t.m_vertices[y].y;i.id.features.incidentEdge=y}s=u-T;o=a-N;c=Math.sqrt(s*s+o*o);s/=c;o/=c;if(c>d){return}e.pointCount=1;e.normal.Set(f.col1.x*s+f.col2.x*o,f.col1.y*s+f.col2.y*o);i.position.x=n.m_position.x-d*e.normal.x;i.position.y=n.m_position.y-d*e.normal.y;i.separation=c-d};b2Collision.b2TestOverlap=function(e,t){var n=t.minVertex;var r=e.maxVertex;var i=n.x-r.x;var s=n.y-r.y;n=e.minVertex;r=t.maxVertex;var o=n.x-r.x;var u=n.y-r.y;if(i>0||s>0)return false;if(o>0||u>0)return false;return true};var Features=Class.create();Features.prototype={set_referenceFace:function(e){this._referenceFace=e;this._m_id._key=this._m_id._key&4294967040|this._referenceFace&255},get_referenceFace:function(){return this._referenceFace},_referenceFace:0,set_incidentEdge:function(e){this._incidentEdge=e;this._m_id._key=this._m_id._key&4294902015|this._incidentEdge<<8&65280},get_incidentEdge:function(){return this._incidentEdge},_incidentEdge:0,set_incidentVertex:function(e){this._incidentVertex=e;this._m_id._key=this._m_id._key&4278255615|this._incidentVertex<<16&16711680},get_incidentVertex:function(){return this._incidentVertex},_incidentVertex:0,set_flip:function(e){this._flip=e;this._m_id._key=this._m_id._key&16777215|this._flip<<24&4278190080},get_flip:function(){return this._flip},_flip:0,_m_id:null,initialize:function(){}};var b2ContactID=Class.create();b2ContactID.prototype={initialize:function(){this.features=new Features;this.features._m_id=this},Set:function(e){this.set_key(e._key)},Copy:function(){var e=new b2ContactID;e.set_key(this._key);return e},get_key:function(){return this._key},set_key:function(e){this._key=e;this.features._referenceFace=this._key&255;this.features._incidentEdge=(this._key&65280)>>8&255;this.features._incidentVertex=(this._key&16711680)>>16&255;this.features._flip=(this._key&4278190080)>>24&255},features:new Features,_key:0};var b2ContactPoint=Class.create();b2ContactPoint.prototype={position:new b2Vec2,separation:null,normalImpulse:null,tangentImpulse:null,id:new b2ContactID,initialize:function(){this.position=new b2Vec2;this.id=new b2ContactID}};var b2Distance=Class.create();b2Distance.prototype={initialize:function(){}};b2Distance.ProcessTwo=function(e,t,n,r,i){var s=-i[1].x;var o=-i[1].y;var u=i[0].x-i[1].x;var a=i[0].y-i[1].y;var f=Math.sqrt(u*u+a*a);u/=f;a/=f;var l=s*u+o*a;if(l<=0||f<Number.MIN_VALUE){e.SetV(n[1]);t.SetV(r[1]);n[0].SetV(n[1]);r[0].SetV(r[1]);i[0].SetV(i[1]);return 1}l/=f;e.x=n[1].x+l*(n[0].x-n[1].x);e.y=n[1].y+l*(n[0].y-n[1].y);t.x=r[1].x+l*(r[0].x-r[1].x);t.y=r[1].y+l*(r[0].y-r[1].y);return 2};b2Distance.ProcessThree=function(e,t,n,r,i){var s=i[0].x;var o=i[0].y;var u=i[1].x;var a=i[1].y;var f=i[2].x;var l=i[2].y;var c=u-s;var h=a-o;var p=f-s;var d=l-o;var v=f-u;var m=l-a;var g=-(s*c+o*h);var y=u*c+a*h;var b=-(s*p+o*d);var w=f*p+l*d;var E=-(u*v+a*m);var S=f*v+l*m;if(w<=0&&S<=0){e.SetV(n[2]);t.SetV(r[2]);n[0].SetV(n[2]);r[0].SetV(r[2]);i[0].SetV(i[2]);return 1}var x=c*d-h*p;var T=x*(s*a-o*u);var N=x*(u*l-a*f);if(N<=0&&E>=0&&S>=0){var C=E/(E+S);e.x=n[1].x+C*(n[2].x-n[1].x);e.y=n[1].y+C*(n[2].y-n[1].y);t.x=r[1].x+C*(r[2].x-r[1].x);t.y=r[1].y+C*(r[2].y-r[1].y);n[0].SetV(n[2]);r[0].SetV(r[2]);i[0].SetV(i[2]);return 2}var k=x*(f*o-l*s);if(k<=0&&b>=0&&w>=0){var C=b/(b+w);e.x=n[0].x+C*(n[2].x-n[0].x);e.y=n[0].y+C*(n[2].y-n[0].y);t.x=r[0].x+C*(r[2].x-r[0].x);t.y=r[0].y+C*(r[2].y-r[0].y);n[1].SetV(n[2]);r[1].SetV(r[2]);i[1].SetV(i[2]);return 2}var L=N+k+T;L=1/L;var A=N*L;var O=k*L;var M=1-A-O;e.x=A*n[0].x+O*n[1].x+M*n[2].x;e.y=A*n[0].y+O*n[1].y+M*n[2].y;t.x=A*r[0].x+O*r[1].x+M*r[2].x;t.y=A*r[0].y+O*r[1].y+M*r[2].y;return 3};b2Distance.InPoinsts=function(e,t,n){for(var r=0;r<n;++r){if(e.x==t[r].x&&e.y==t[r].y){return true}}return false};b2Distance.Distance=function(e,t,n,r){var i=new Array(3);var s=new Array(3);var o=new Array(3);var u=0;e.SetV(n.m_position);t.SetV(r.m_position);var a=0;var f=20;for(var l=0;l<f;++l){var c=t.x-e.x;var h=t.y-e.y;var p=n.Support(c,h);var d=r.Support(-c,-h);a=c*c+h*h;var v=d.x-p.x;var m=d.y-p.y;var g=c*v+h*m;if(a-b2Dot(c*v+h*m)<=.01*a){if(u==0){e.SetV(p);t.SetV(d)}b2Distance.g_GJK_Iterations=l;return Math.sqrt(a)}switch(u){case 0:i[0].SetV(p);s[0].SetV(d);o[0]=w;e.SetV(i[0]);t.SetV(s[0]);++u;break;case 1:i[1].SetV(p);s[1].SetV(d);o[1].x=v;o[1].y=m;u=b2Distance.ProcessTwo(e,t,i,s,o);break;case 2:i[2].SetV(p);s[2].SetV(d);o[2].x=v;o[2].y=m;u=b2Distance.ProcessThree(e,t,i,s,o);break}if(u==3){b2Distance.g_GJK_Iterations=l;return 0}var y=-Number.MAX_VALUE;for(var b=0;b<u;++b){y=b2Math.b2Max(y,o[b].x*o[b].x+o[b].y*o[b].y)}if(u==3||a<=100*Number.MIN_VALUE*y){b2Distance.g_GJK_Iterations=l;return Math.sqrt(a)}}b2Distance.g_GJK_Iterations=f;return Math.sqrt(a)};b2Distance.g_GJK_Iterations=0;var b2Manifold=Class.create();b2Manifold.prototype={initialize:function(){this.points=new Array(b2Settings.b2_maxManifoldPoints);for(var e=0;e<b2Settings.b2_maxManifoldPoints;e++){this.points[e]=new b2ContactPoint}this.normal=new b2Vec2},points:null,normal:null,pointCount:0};var b2OBB=Class.create();b2OBB.prototype={R:new b2Mat22,center:new b2Vec2,extents:new b2Vec2,initialize:function(){this.R=new b2Mat22;this.center=new b2Vec2;this.extents=new b2Vec2}};var b2Proxy=Class.create();b2Proxy.prototype={GetNext:function(){return this.lowerBounds[0]},SetNext:function(e){this.lowerBounds[0]=e},IsValid:function(){return this.overlapCount!=b2BroadPhase.b2_invalid},lowerBounds:[0,0],upperBounds:[0,0],overlapCount:0,timeStamp:0,userData:null,initialize:function(){this.lowerBounds=[0,0];this.upperBounds=[0,0]}};var ClipVertex=Class.create();ClipVertex.prototype={v:new b2Vec2,id:new b2ContactID,initialize:function(){this.v=new b2Vec2;this.id=new b2ContactID}};var b2Shape=Class.create();b2Shape.prototype={TestPoint:function(e){return false},GetUserData:function(){return this.m_userData},GetType:function(){return this.m_type},GetBody:function(){return this.m_body},GetPosition:function(){return this.m_position},GetRotationMatrix:function(){return this.m_R},ResetProxy:function(e){},GetNext:function(){return this.m_next},initialize:function(e,t){this.m_R=new b2Mat22;this.m_position=new b2Vec2;this.m_userData=e.userData;this.m_friction=e.friction;this.m_restitution=e.restitution;this.m_body=t;this.m_proxyId=b2Pair.b2_nullProxy;this.m_maxRadius=0;this.m_categoryBits=e.categoryBits;this.m_maskBits=e.maskBits;this.m_groupIndex=e.groupIndex},DestroyProxy:function(){if(this.m_proxyId!=b2Pair.b2_nullProxy){this.m_body.m_world.m_broadPhase.DestroyProxy(this.m_proxyId);this.m_proxyId=b2Pair.b2_nullProxy}},Synchronize:function(e,t,n,r){},QuickSync:function(e,t){},Support:function(e,t,n){},GetMaxRadius:function(){return this.m_maxRadius},m_next:null,m_R:new b2Mat22,m_position:new b2Vec2,m_type:0,m_userData:null,m_body:null,m_friction:null,m_restitution:null,m_maxRadius:null,m_proxyId:0,m_categoryBits:0,m_maskBits:0,m_groupIndex:0};b2Shape.Create=function(e,t,n){switch(e.type){case b2Shape.e_circleShape:{return new b2CircleShape(e,t,n)};case b2Shape.e_boxShape:case b2Shape.e_polyShape:{return new b2PolyShape(e,t,n)}}return null};b2Shape.Destroy=function(e){if(e.m_proxyId!=b2Pair.b2_nullProxy)e.m_body.m_world.m_broadPhase.DestroyProxy(e.m_proxyId)};b2Shape.e_unknownShape=-1;b2Shape.e_circleShape=0;b2Shape.e_boxShape=1;b2Shape.e_polyShape=2;b2Shape.e_meshShape=3;b2Shape.e_shapeTypeCount=4;b2Shape.PolyMass=function(e,t,n,r){var i=new b2Vec2;i.SetZero();var s=0;var o=0;var u=new b2Vec2(0,0);var a=1/3;for(var f=0;f<n;++f){var l=u;var c=t[f];var h=f+1<n?t[f+1]:t[0];var p=b2Math.SubtractVV(c,l);var d=b2Math.SubtractVV(h,l);var v=b2Math.b2CrossVV(p,d);var m=.5*v;s+=m;var g=new b2Vec2;g.SetV(l);g.Add(c);g.Add(h);g.Multiply(a*m);i.Add(g);var y=l.x;var b=l.y;var w=p.x;var E=p.y;var S=d.x;var x=d.y;var T=a*(.25*(w*w+S*w+S*S)+(y*w+y*S))+.5*y*y;var N=a*(.25*(E*E+x*E+x*x)+(b*E+b*x))+.5*b*b;o+=v*(T+N)}e.mass=r*s;i.Multiply(1/s);e.center=i;o=r*(o-s*b2Math.b2Dot(i,i));e.I=o};b2Shape.PolyCentroid=function(e,t,n){var r=0;var i=0;var s=0;var o=0;var u=0;var a=1/3;for(var f=0;f<t;++f){var l=o;var c=u;var h=e[f].x;var p=e[f].y;var d=f+1<t?e[f+1].x:e[0].x;var v=f+1<t?e[f+1].y:e[0].y;var m=h-l;var g=p-c;var y=d-l;var b=v-c;var w=m*b-g*y;var E=.5*w;s+=E;r+=E*a*(l+h+d);i+=E*a*(c+p+v)}r*=1/s;i*=1/s;n.Set(r,i)};var b2ShapeDef=Class.create();b2ShapeDef.prototype={initialize:function(){this.type=b2Shape.e_unknownShape;this.userData=null;this.localPosition=new b2Vec2(0,0);this.localRotation=0;this.friction=.2;this.restitution=0;this.density=0;this.categoryBits=1;this.maskBits=65535;this.groupIndex=0},ComputeMass:function(e){e.center=new b2Vec2(0,0);if(this.density==0){e.mass=0;e.center.Set(0,0);e.I=0}switch(this.type){case b2Shape.e_circleShape:{var t=this;e.mass=this.density*b2Settings.b2_pi*t.radius*t.radius;e.center.Set(0,0);e.I=.5*e.mass*t.radius*t.radius}break;case b2Shape.e_boxShape:{var n=this;e.mass=4*this.density*n.extents.x*n.extents.y;e.center.Set(0,0);e.I=e.mass/3*b2Math.b2Dot(n.extents,n.extents)}break;case b2Shape.e_polyShape:{var r=this;b2Shape.PolyMass(e,r.vertices,r.vertexCount,this.density)}break;default:e.mass=0;e.center.Set(0,0);e.I=0;break}},type:0,userData:null,localPosition:null,localRotation:null,friction:null,restitution:null,density:null,categoryBits:0,maskBits:0,groupIndex:0};var b2BoxDef=Class.create();Object.extend(b2BoxDef.prototype,b2ShapeDef.prototype);Object.extend(b2BoxDef.prototype,{initialize:function(){this.type=b2Shape.e_unknownShape;this.userData=null;this.localPosition=new b2Vec2(0,0);this.localRotation=0;this.friction=.2;this.restitution=0;this.density=0;this.categoryBits=1;this.maskBits=65535;this.groupIndex=0;this.type=b2Shape.e_boxShape;this.extents=new b2Vec2(1,1)},extents:null});var b2CircleDef=Class.create();Object.extend(b2CircleDef.prototype,b2ShapeDef.prototype);Object.extend(b2CircleDef.prototype,{initialize:function(){this.type=b2Shape.e_unknownShape;this.userData=null;this.localPosition=new b2Vec2(0,0);this.localRotation=0;this.friction=.2;this.restitution=0;this.density=0;this.categoryBits=1;this.maskBits=65535;this.groupIndex=0;this.type=b2Shape.e_circleShape;this.radius=1},radius:null});var b2CircleShape=Class.create();Object.extend(b2CircleShape.prototype,b2Shape.prototype);Object.extend(b2CircleShape.prototype,{TestPoint:function(e){var t=new b2Vec2;t.SetV(e);t.Subtract(this.m_position);return b2Math.b2Dot(t,t)<=this.m_radius*this.m_radius},initialize:function(e,t,n){this.m_R=new b2Mat22;this.m_position=new b2Vec2;this.m_userData=e.userData;this.m_friction=e.friction;this.m_restitution=e.restitution;this.m_body=t;this.m_proxyId=b2Pair.b2_nullProxy;this.m_maxRadius=0;this.m_categoryBits=e.categoryBits;this.m_maskBits=e.maskBits;this.m_groupIndex=e.groupIndex;this.m_localPosition=new b2Vec2;var r=e;this.m_localPosition.Set(e.localPosition.x-n.x,e.localPosition.y-n.y);this.m_type=b2Shape.e_circleShape;this.m_radius=r.radius;this.m_R.SetM(this.m_body.m_R);var i=this.m_R.col1.x*this.m_localPosition.x+this.m_R.col2.x*this.m_localPosition.y;var s=this.m_R.col1.y*this.m_localPosition.x+this.m_R.col2.y*this.m_localPosition.y;this.m_position.x=this.m_body.m_position.x+i;this.m_position.y=this.m_body.m_position.y+s;this.m_maxRadius=Math.sqrt(i*i+s*s)+this.m_radius;var o=new b2AABB;o.minVertex.Set(this.m_position.x-this.m_radius,this.m_position.y-this.m_radius);o.maxVertex.Set(this.m_position.x+this.m_radius,this.m_position.y+this.m_radius);var u=this.m_body.m_world.m_broadPhase;if(u.InRange(o)){this.m_proxyId=u.CreateProxy(o,this)}else{this.m_proxyId=b2Pair.b2_nullProxy}if(this.m_proxyId==b2Pair.b2_nullProxy){this.m_body.Freeze()}},Synchronize:function(e,t,n,r){this.m_R.SetM(r);this.m_position.x=r.col1.x*this.m_localPosition.x+r.col2.x*this.m_localPosition.y+n.x;this.m_position.y=r.col1.y*this.m_localPosition.x+r.col2.y*this.m_localPosition.y+n.y;if(this.m_proxyId==b2Pair.b2_nullProxy){return}var i=e.x+(t.col1.x*this.m_localPosition.x+t.col2.x*this.m_localPosition.y);var s=e.y+(t.col1.y*this.m_localPosition.x+t.col2.y*this.m_localPosition.y);var o=Math.min(i,this.m_position.x);var u=Math.min(s,this.m_position.y);var a=Math.max(i,this.m_position.x);var f=Math.max(s,this.m_position.y);var l=new b2AABB;l.minVertex.Set(o-this.m_radius,u-this.m_radius);l.maxVertex.Set(a+this.m_radius,f+this.m_radius);var c=this.m_body.m_world.m_broadPhase;if(c.InRange(l)){c.MoveProxy(this.m_proxyId,l)}else{this.m_body.Freeze()}},QuickSync:function(e,t){this.m_R.SetM(t);this.m_position.x=t.col1.x*this.m_localPosition.x+t.col2.x*this.m_localPosition.y+e.x;this.m_position.y=t.col1.y*this.m_localPosition.x+t.col2.y*this.m_localPosition.y+e.y},ResetProxy:function(e){if(this.m_proxyId==b2Pair.b2_nullProxy){return}var t=e.GetProxy(this.m_proxyId);e.DestroyProxy(this.m_proxyId);t=null;var n=new b2AABB;n.minVertex.Set(this.m_position.x-this.m_radius,this.m_position.y-this.m_radius);n.maxVertex.Set(this.m_position.x+this.m_radius,this.m_position.y+this.m_radius);if(e.InRange(n)){this.m_proxyId=e.CreateProxy(n,this)}else{this.m_proxyId=b2Pair.b2_nullProxy}if(this.m_proxyId==b2Pair.b2_nullProxy){this.m_body.Freeze()}},Support:function(e,t,n){var r=Math.sqrt(e*e+t*t);e/=r;t/=r;n.Set(this.m_position.x+this.m_radius*e,this.m_position.y+this.m_radius*t)},m_localPosition:new b2Vec2,m_radius:null});var b2MassData=Class.create();b2MassData.prototype={mass:0,center:new b2Vec2(0,0),I:0,initialize:function(){this.center=new b2Vec2(0,0)}};var b2PolyDef=Class.create();Object.extend(b2PolyDef.prototype,b2ShapeDef.prototype);Object.extend(b2PolyDef.prototype,{initialize:function(){this.type=b2Shape.e_unknownShape;this.userData=null;this.localPosition=new b2Vec2(0,0);this.localRotation=0;this.friction=.2;this.restitution=0;this.density=0;this.categoryBits=1;this.maskBits=65535;this.groupIndex=0;this.vertices=new Array(b2Settings.b2_maxPolyVertices);this.type=b2Shape.e_polyShape;this.vertexCount=0;for(var e=0;e<b2Settings.b2_maxPolyVertices;e++){this.vertices[e]=new b2Vec2}},vertices:new Array(b2Settings.b2_maxPolyVertices),vertexCount:0});var b2PolyShape=Class.create();Object.extend(b2PolyShape.prototype,b2Shape.prototype);Object.extend(b2PolyShape.prototype,{TestPoint:function(e){var t=new b2Vec2;t.SetV(e);t.Subtract(this.m_position);t.MulTM(this.m_R);for(var n=0;n<this.m_vertexCount;++n){var r=new b2Vec2;r.SetV(t);r.Subtract(this.m_vertices[n]);var i=b2Math.b2Dot(this.m_normals[n],r);if(i>0){return false}}return true},initialize:function(e,t,n){this.m_R=new b2Mat22;this.m_position=new b2Vec2;this.m_userData=e.userData;this.m_friction=e.friction;this.m_restitution=e.restitution;this.m_body=t;this.m_proxyId=b2Pair.b2_nullProxy;this.m_maxRadius=0;this.m_categoryBits=e.categoryBits;this.m_maskBits=e.maskBits;this.m_groupIndex=e.groupIndex;this.syncAABB=new b2AABB;this.syncMat=new b2Mat22;this.m_localCentroid=new b2Vec2;this.m_localOBB=new b2OBB;var r=0;var i;var s;var o;var u=new b2AABB;this.m_vertices=new Array(b2Settings.b2_maxPolyVertices);this.m_coreVertices=new Array(b2Settings.b2_maxPolyVertices);this.m_normals=new Array(b2Settings.b2_maxPolyVertices);this.m_type=b2Shape.e_polyShape;var a=new b2Mat22(e.localRotation);if(e.type==b2Shape.e_boxShape){this.m_localCentroid.x=e.localPosition.x-n.x;this.m_localCentroid.y=e.localPosition.y-n.y;var f=e;this.m_vertexCount=4;i=f.extents.x;s=f.extents.y;var l=Math.max(0,i-2*b2Settings.b2_linearSlop);var c=Math.max(0,s-2*b2Settings.b2_linearSlop);o=this.m_vertices[0]=new b2Vec2;o.x=a.col1.x*i+a.col2.x*s;o.y=a.col1.y*i+a.col2.y*s;o=this.m_vertices[1]=new b2Vec2;o.x=a.col1.x*-i+a.col2.x*s;o.y=a.col1.y*-i+a.col2.y*s;o=this.m_vertices[2]=new b2Vec2;o.x=a.col1.x*-i+a.col2.x*-s;o.y=a.col1.y*-i+a.col2.y*-s;o=this.m_vertices[3]=new b2Vec2;o.x=a.col1.x*i+a.col2.x*-s;o.y=a.col1.y*i+a.col2.y*-s;o=this.m_coreVertices[0]=new b2Vec2;o.x=a.col1.x*l+a.col2.x*c;o.y=a.col1.y*l+a.col2.y*c;o=this.m_coreVertices[1]=new b2Vec2;o.x=a.col1.x*-l+a.col2.x*c;o.y=a.col1.y*-l+a.col2.y*c;o=this.m_coreVertices[2]=new b2Vec2;o.x=a.col1.x*-l+a.col2.x*-c;o.y=a.col1.y*-l+a.col2.y*-c;o=this.m_coreVertices[3]=new b2Vec2;o.x=a.col1.x*l+a.col2.x*-c;o.y=a.col1.y*l+a.col2.y*-c}else{var h=e;this.m_vertexCount=h.vertexCount;b2Shape.PolyCentroid(h.vertices,h.vertexCount,b2PolyShape.tempVec);var p=b2PolyShape.tempVec.x;var d=b2PolyShape.tempVec.y;this.m_localCentroid.x=e.localPosition.x+(a.col1.x*p+a.col2.x*d)-n.x;this.m_localCentroid.y=e.localPosition.y+(a.col1.y*p+a.col2.y*d)-n.y;for(r=0;r<this.m_vertexCount;++r){this.m_vertices[r]=new b2Vec2;this.m_coreVertices[r]=new b2Vec2;i=h.vertices[r].x-p;s=h.vertices[r].y-d;this.m_vertices[r].x=a.col1.x*i+a.col2.x*s;this.m_vertices[r].y=a.col1.y*i+a.col2.y*s;var v=this.m_vertices[r].x;var m=this.m_vertices[r].y;var g=Math.sqrt(v*v+m*m);if(g>Number.MIN_VALUE){v*=1/g;m*=1/g}this.m_coreVertices[r].x=this.m_vertices[r].x-2*b2Settings.b2_linearSlop*v;this.m_coreVertices[r].y=this.m_vertices[r].y-2*b2Settings.b2_linearSlop*m}}var y=Number.MAX_VALUE;var b=Number.MAX_VALUE;var w=-Number.MAX_VALUE;var E=-Number.MAX_VALUE;this.m_maxRadius=0;for(r=0;r<this.m_vertexCount;++r){var S=this.m_vertices[r];y=Math.min(y,S.x);b=Math.min(b,S.y);w=Math.max(w,S.x);E=Math.max(E,S.y);this.m_maxRadius=Math.max(this.m_maxRadius,S.Length())}this.m_localOBB.R.SetIdentity();this.m_localOBB.center.Set((y+w)*.5,(b+E)*.5);this.m_localOBB.extents.Set((w-y)*.5,(E-b)*.5);var x=0;var T=0;for(r=0;r<this.m_vertexCount;++r){this.m_normals[r]=new b2Vec2;x=r;T=r+1<this.m_vertexCount?r+1:0;this.m_normals[r].x=this.m_vertices[T].y-this.m_vertices[x].y;this.m_normals[r].y=-(this.m_vertices[T].x-this.m_vertices[x].x);this.m_normals[r].Normalize()}for(r=0;r<this.m_vertexCount;++r){x=r;T=r+1<this.m_vertexCount?r+1:0}this.m_R.SetM(this.m_body.m_R);this.m_position.x=this.m_body.m_position.x+(this.m_R.col1.x*this.m_localCentroid.x+this.m_R.col2.x*this.m_localCentroid.y);this.m_position.y=this.m_body.m_position.y+(this.m_R.col1.y*this.m_localCentroid.x+this.m_R.col2.y*this.m_localCentroid.y);b2PolyShape.tAbsR.col1.x=this.m_R.col1.x*this.m_localOBB.R.col1.x+this.m_R.col2.x*this.m_localOBB.R.col1.y;b2PolyShape.tAbsR.col1.y=this.m_R.col1.y*this.m_localOBB.R.col1.x+this.m_R.col2.y*this.m_localOBB.R.col1.y;b2PolyShape.tAbsR.col2.x=this.m_R.col1.x*this.m_localOBB.R.col2.x+this.m_R.col2.x*this.m_localOBB.R.col2.y;b2PolyShape.tAbsR.col2.y=this.m_R.col1.y*this.m_localOBB.R.col2.x+this.m_R.col2.y*this.m_localOBB.R.col2.y;b2PolyShape.tAbsR.Abs();i=b2PolyShape.tAbsR.col1.x*this.m_localOBB.extents.x+b2PolyShape.tAbsR.col2.x*this.m_localOBB.extents.y;s=b2PolyShape.tAbsR.col1.y*this.m_localOBB.extents.x+b2PolyShape.tAbsR.col2.y*this.m_localOBB.extents.y;var N=this.m_position.x+(this.m_R.col1.x*this.m_localOBB.center.x+this.m_R.col2.x*this.m_localOBB.center.y);var C=this.m_position.y+(this.m_R.col1.y*this.m_localOBB.center.x+this.m_R.col2.y*this.m_localOBB.center.y);u.minVertex.x=N-i;u.minVertex.y=C-s;u.maxVertex.x=N+i;u.maxVertex.y=C+s;var k=this.m_body.m_world.m_broadPhase;if(k.InRange(u)){this.m_proxyId=k.CreateProxy(u,this)}else{this.m_proxyId=b2Pair.b2_nullProxy}if(this.m_proxyId==b2Pair.b2_nullProxy){this.m_body.Freeze()}},syncAABB:new b2AABB,syncMat:new b2Mat22,Synchronize:function(e,t,n,r){this.m_R.SetM(r);this.m_position.x=this.m_body.m_position.x+(r.col1.x*this.m_localCentroid.x+r.col2.x*this.m_localCentroid.y);this.m_position.y=this.m_body.m_position.y+(r.col1.y*this.m_localCentroid.x+r.col2.y*this.m_localCentroid.y);if(this.m_proxyId==b2Pair.b2_nullProxy){return}var i;var s;var o=t.col1;var u=t.col2;var a=this.m_localOBB.R.col1;var f=this.m_localOBB.R.col2;this.syncMat.col1.x=o.x*a.x+u.x*a.y;this.syncMat.col1.y=o.y*a.x+u.y*a.y;this.syncMat.col2.x=o.x*f.x+u.x*f.y;this.syncMat.col2.y=o.y*f.x+u.y*f.y;this.syncMat.Abs();i=this.m_localCentroid.x+this.m_localOBB.center.x;s=this.m_localCentroid.y+this.m_localOBB.center.y;var l=e.x+(t.col1.x*i+t.col2.x*s);var c=e.y+(t.col1.y*i+t.col2.y*s);i=this.syncMat.col1.x*this.m_localOBB.extents.x+this.syncMat.col2.x*this.m_localOBB.extents.y;s=this.syncMat.col1.y*this.m_localOBB.extents.x+this.syncMat.col2.y*this.m_localOBB.extents.y;this.syncAABB.minVertex.x=l-i;this.syncAABB.minVertex.y=c-s;this.syncAABB.maxVertex.x=l+i;this.syncAABB.maxVertex.y=c+s;o=r.col1;u=r.col2;a=this.m_localOBB.R.col1;f=this.m_localOBB.R.col2;this.syncMat.col1.x=o.x*a.x+u.x*a.y;this.syncMat.col1.y=o.y*a.x+u.y*a.y;this.syncMat.col2.x=o.x*f.x+u.x*f.y;this.syncMat.col2.y=o.y*f.x+u.y*f.y;this.syncMat.Abs();i=this.m_localCentroid.x+this.m_localOBB.center.x;s=this.m_localCentroid.y+this.m_localOBB.center.y;l=n.x+(r.col1.x*i+r.col2.x*s);c=n.y+(r.col1.y*i+r.col2.y*s);i=this.syncMat.col1.x*this.m_localOBB.extents.x+this.syncMat.col2.x*this.m_localOBB.extents.y;s=this.syncMat.col1.y*this.m_localOBB.extents.x+this.syncMat.col2.y*this.m_localOBB.extents.y;this.syncAABB.minVertex.x=Math.min(this.syncAABB.minVertex.x,l-i);this.syncAABB.minVertex.y=Math.min(this.syncAABB.minVertex.y,c-s);this.syncAABB.maxVertex.x=Math.max(this.syncAABB.maxVertex.x,l+i);this.syncAABB.maxVertex.y=Math.max(this.syncAABB.maxVertex.y,c+s);var h=this.m_body.m_world.m_broadPhase;if(h.InRange(this.syncAABB)){h.MoveProxy(this.m_proxyId,this.syncAABB)}else{this.m_body.Freeze()}},QuickSync:function(e,t){this.m_R.SetM(t);this.m_position.x=e.x+(t.col1.x*this.m_localCentroid.x+t.col2.x*this.m_localCentroid.y);this.m_position.y=e.y+(t.col1.y*this.m_localCentroid.x+t.col2.y*this.m_localCentroid.y)},ResetProxy:function(e){if(this.m_proxyId==b2Pair.b2_nullProxy){return}var t=e.GetProxy(this.m_proxyId);e.DestroyProxy(this.m_proxyId);t=null;var n=b2Math.b2MulMM(this.m_R,this.m_localOBB.R);var r=b2Math.b2AbsM(n);var i=b2Math.b2MulMV(r,this.m_localOBB.extents);var s=b2Math.b2MulMV(this.m_R,this.m_localOBB.center);s.Add(this.m_position);var o=new b2AABB;o.minVertex.SetV(s);o.minVertex.Subtract(i);o.maxVertex.SetV(s);o.maxVertex.Add(i);if(e.InRange(o)){this.m_proxyId=e.CreateProxy(o,this)}else{this.m_proxyId=b2Pair.b2_nullProxy}if(this.m_proxyId==b2Pair.b2_nullProxy){this.m_body.Freeze()}},Support:function(e,t,n){var r=e*this.m_R.col1.x+t*this.m_R.col1.y;var i=e*this.m_R.col2.x+t*this.m_R.col2.y;var s=0;var o=this.m_coreVertices[0].x*r+this.m_coreVertices[0].y*i;for(var u=1;u<this.m_vertexCount;++u){var a=this.m_coreVertices[u].x*r+this.m_coreVertices[u].y*i;if(a>o){s=u;o=a}}n.Set(this.m_position.x+(this.m_R.col1.x*this.m_coreVertices[s].x+this.m_R.col2.x*this.m_coreVertices[s].y),this.m_position.y+(this.m_R.col1.y*this.m_coreVertices[s].x+this.m_R.col2.y*this.m_coreVertices[s].y))},m_localCentroid:new b2Vec2,m_localOBB:new b2OBB,m_vertices:null,m_coreVertices:null,m_vertexCount:0,m_normals:null});b2PolyShape.tempVec=new b2Vec2;b2PolyShape.tAbsR=new b2Mat22;var b2Body=Class.create();b2Body.prototype={SetOriginPosition:function(e,t){if(this.IsFrozen()){return}this.m_rotation=t;this.m_R.Set(this.m_rotation);this.m_position=b2Math.AddVV(e,b2Math.b2MulMV(this.m_R,this.m_center));this.m_position0.SetV(this.m_position);this.m_rotation0=this.m_rotation;for(var n=this.m_shapeList;n!=null;n=n.m_next){n.Synchronize(this.m_position,this.m_R,this.m_position,this.m_R)}this.m_world.m_broadPhase.Commit()},GetOriginPosition:function(){return b2Math.SubtractVV(this.m_position,b2Math.b2MulMV(this.m_R,this.m_center))},SetCenterPosition:function(e,t){if(this.IsFrozen()){return}this.m_rotation=t;this.m_R.Set(this.m_rotation);this.m_position.SetV(e);this.m_position0.SetV(this.m_position);this.m_rotation0=this.m_rotation;for(var n=this.m_shapeList;n!=null;n=n.m_next){n.Synchronize(this.m_position,this.m_R,this.m_position,this.m_R)}this.m_world.m_broadPhase.Commit()},GetCenterPosition:function(){return this.m_position},GetRotation:function(){return this.m_rotation},GetRotationMatrix:function(){return this.m_R},SetLinearVelocity:function(e){this.m_linearVelocity.SetV(e)},GetLinearVelocity:function(){return this.m_linearVelocity},SetAngularVelocity:function(e){this.m_angularVelocity=e},GetAngularVelocity:function(){return this.m_angularVelocity},ApplyForce:function(e,t){if(this.IsSleeping()==false){this.m_force.Add(e);this.m_torque+=b2Math.b2CrossVV(b2Math.SubtractVV(t,this.m_position),e)}},ApplyTorque:function(e){if(this.IsSleeping()==false){this.m_torque+=e}},ApplyImpulse:function(e,t){if(this.IsSleeping()==false){this.m_linearVelocity.Add(b2Math.MulFV(this.m_invMass,e));this.m_angularVelocity+=this.m_invI*b2Math.b2CrossVV(b2Math.SubtractVV(t,this.m_position),e)}},GetMass:function(){return this.m_mass},GetInertia:function(){return this.m_I},GetWorldPoint:function(e){return b2Math.AddVV(this.m_position,b2Math.b2MulMV(this.m_R,e))},GetWorldVector:function(e){return b2Math.b2MulMV(this.m_R,e)},GetLocalPoint:function(e){return b2Math.b2MulTMV(this.m_R,b2Math.SubtractVV(e,this.m_position))},GetLocalVector:function(e){return b2Math.b2MulTMV(this.m_R,e)},IsStatic:function(){return(this.m_flags&b2Body.e_staticFlag)==b2Body.e_staticFlag},IsFrozen:function(){return(this.m_flags&b2Body.e_frozenFlag)==b2Body.e_frozenFlag},IsSleeping:function(){return(this.m_flags&b2Body.e_sleepFlag)==b2Body.e_sleepFlag},AllowSleeping:function(e){if(e){this.m_flags|=b2Body.e_allowSleepFlag}else{this.m_flags&=~b2Body.e_allowSleepFlag;this.WakeUp()}},WakeUp:function(){this.m_flags&=~b2Body.e_sleepFlag;this.m_sleepTime=0},GetShapeList:function(){return this.m_shapeList},GetContactList:function(){return this.m_contactList},GetJointList:function(){return this.m_jointList},GetNext:function(){return this.m_next},GetUserData:function(){return this.m_userData},initialize:function(e,t){this.sMat0=new b2Mat22;this.m_position=new b2Vec2;this.m_R=new b2Mat22(0);this.m_position0=new b2Vec2;var n=0;var r;var i;this.m_flags=0;this.m_position.SetV(e.position);this.m_rotation=e.rotation;this.m_R.Set(this.m_rotation);this.m_position0.SetV(this.m_position);this.m_rotation0=this.m_rotation;this.m_world=t;this.m_linearDamping=b2Math.b2Clamp(1-e.linearDamping,0,1);this.m_angularDamping=b2Math.b2Clamp(1-e.angularDamping,0,1);this.m_force=new b2Vec2(0,0);this.m_torque=0;this.m_mass=0;var s=new Array(b2Settings.b2_maxShapesPerBody);for(n=0;n<b2Settings.b2_maxShapesPerBody;n++){s[n]=new b2MassData}this.m_shapeCount=0;this.m_center=new b2Vec2(0,0);for(n=0;n<b2Settings.b2_maxShapesPerBody;++n){r=e.shapes[n];if(r==null)break;i=s[n];r.ComputeMass(i);this.m_mass+=i.mass;this.m_center.x+=i.mass*(r.localPosition.x+i.center.x);this.m_center.y+=i.mass*(r.localPosition.y+i.center.y);++this.m_shapeCount}if(this.m_mass>0){this.m_center.Multiply(1/this.m_mass);this.m_position.Add(b2Math.b2MulMV(this.m_R,this.m_center))}else{this.m_flags|=b2Body.e_staticFlag}this.m_I=0;for(n=0;n<this.m_shapeCount;++n){r=e.shapes[n];i=s[n];this.m_I+=i.I;var o=b2Math.SubtractVV(b2Math.AddVV(r.localPosition,i.center),this.m_center);this.m_I+=i.mass*b2Math.b2Dot(o,o)}if(this.m_mass>0){this.m_invMass=1/this.m_mass}else{this.m_invMass=0}if(this.m_I>0&&e.preventRotation==false){this.m_invI=1/this.m_I}else{this.m_I=0;this.m_invI=0}this.m_linearVelocity=b2Math.AddVV(e.linearVelocity,b2Math.b2CrossFV(e.angularVelocity,this.m_center));this.m_angularVelocity=e.angularVelocity;this.m_jointList=null;this.m_contactList=null;this.m_prev=null;this.m_next=null;this.m_shapeList=null;for(n=0;n<this.m_shapeCount;++n){r=e.shapes[n];var u=b2Shape.Create(r,this,this.m_center);u.m_next=this.m_shapeList;this.m_shapeList=u}this.m_sleepTime=0;if(e.allowSleep){this.m_flags|=b2Body.e_allowSleepFlag}if(e.isSleeping){this.m_flags|=b2Body.e_sleepFlag}if(this.m_flags&b2Body.e_sleepFlag||this.m_invMass==0){this.m_linearVelocity.Set(0,0);this.m_angularVelocity=0}this.m_userData=e.userData},Destroy:function(){var e=this.m_shapeList;while(e){var t=e;e=e.m_next;b2Shape.Destroy(t)}},sMat0:new b2Mat22,SynchronizeShapes:function(){this.sMat0.Set(this.m_rotation0);for(var e=this.m_shapeList;e!=null;e=e.m_next){e.Synchronize(this.m_position0,this.sMat0,this.m_position,this.m_R)}},QuickSyncShapes:function(){for(var e=this.m_shapeList;e!=null;e=e.m_next){e.QuickSync(this.m_position,this.m_R)}},IsConnected:function(e){for(var t=this.m_jointList;t!=null;t=t.next){if(t.other==e)return t.joint.m_collideConnected==false}return false},Freeze:function(){this.m_flags|=b2Body.e_frozenFlag;this.m_linearVelocity.SetZero();this.m_angularVelocity=0;for(var e=this.m_shapeList;e!=null;e=e.m_next){e.DestroyProxy()}},m_flags:0,m_position:new b2Vec2,m_rotation:null,m_R:new b2Mat22(0),m_position0:new b2Vec2,m_rotation0:null,m_linearVelocity:null,m_angularVelocity:null,m_force:null,m_torque:null,m_center:null,m_world:null,m_prev:null,m_next:null,m_shapeList:null,m_shapeCount:0,m_jointList:null,m_contactList:null,m_mass:null,m_invMass:null,m_I:null,m_invI:null,m_linearDamping:null,m_angularDamping:null,m_sleepTime:null,m_userData:null};b2Body.e_staticFlag=1;b2Body.e_frozenFlag=2;b2Body.e_islandFlag=4;b2Body.e_sleepFlag=8;b2Body.e_allowSleepFlag=16;b2Body.e_destroyFlag=32;var b2BodyDef=Class.create();b2BodyDef.prototype={initialize:function(){this.shapes=new Array;this.userData=null;for(var e=0;e<b2Settings.b2_maxShapesPerBody;e++){this.shapes[e]=null}this.position=new b2Vec2(0,0);this.rotation=0;this.linearVelocity=new b2Vec2(0,0);this.angularVelocity=0;this.linearDamping=0;this.angularDamping=0;this.allowSleep=true;this.isSleeping=false;this.preventRotation=false},userData:null,shapes:new Array,position:null,rotation:null,linearVelocity:null,angularVelocity:null,linearDamping:null,angularDamping:null,allowSleep:null,isSleeping:null,preventRotation:null,AddShape:function(e){for(var t=0;t<b2Settings.b2_maxShapesPerBody;++t){if(this.shapes[t]==null){this.shapes[t]=e;break}}}};var b2CollisionFilter=Class.create();b2CollisionFilter.prototype={ShouldCollide:function(e,t){if(e.m_groupIndex==t.m_groupIndex&&e.m_groupIndex!=0){return e.m_groupIndex>0}var n=(e.m_maskBits&t.m_categoryBits)!=0&&(e.m_categoryBits&t.m_maskBits)!=0;return n},initialize:function(){}};b2CollisionFilter.b2_defaultFilter=new b2CollisionFilter;var b2Island=Class.create();b2Island.prototype={initialize:function(e,t,n,r){var i=0;this.m_bodyCapacity=e;this.m_contactCapacity=t;this.m_jointCapacity=n;this.m_bodyCount=0;this.m_contactCount=0;this.m_jointCount=0;this.m_bodies=new Array(e);for(i=0;i<e;i++)this.m_bodies[i]=null;this.m_contacts=new Array(t);for(i=0;i<t;i++)this.m_contacts[i]=null;this.m_joints=new Array(n);for(i=0;i<n;i++)this.m_joints[i]=null;this.m_allocator=r},Clear:function(){this.m_bodyCount=0;this.m_contactCount=0;this.m_jointCount=0},Solve:function(e,t){var n=0;var r;for(n=0;n<this.m_bodyCount;++n){r=this.m_bodies[n];if(r.m_invMass==0)continue;r.m_linearVelocity.Add(b2Math.MulFV(e.dt,b2Math.AddVV(t,b2Math.MulFV(r.m_invMass,r.m_force))));r.m_angularVelocity+=e.dt*r.m_invI*r.m_torque;r.m_linearVelocity.Multiply(r.m_linearDamping);r.m_angularVelocity*=r.m_angularDamping;r.m_position0.SetV(r.m_position);r.m_rotation0=r.m_rotation}var i=new b2ContactSolver(this.m_contacts,this.m_contactCount,this.m_allocator);i.PreSolve();for(n=0;n<this.m_jointCount;++n){this.m_joints[n].PrepareVelocitySolver()}for(n=0;n<e.iterations;++n){i.SolveVelocityConstraints();for(var s=0;s<this.m_jointCount;++s){this.m_joints[s].SolveVelocityConstraints(e)}}for(n=0;n<this.m_bodyCount;++n){r=this.m_bodies[n];if(r.m_invMass==0)continue;r.m_position.x+=e.dt*r.m_linearVelocity.x;r.m_position.y+=e.dt*r.m_linearVelocity.y;r.m_rotation+=e.dt*r.m_angularVelocity;r.m_R.Set(r.m_rotation)}for(n=0;n<this.m_jointCount;++n){this.m_joints[n].PreparePositionSolver()}if(b2World.s_enablePositionCorrection){for(b2Island.m_positionIterationCount=0;b2Island.m_positionIterationCount<e.iterations;++b2Island.m_positionIterationCount){var o=i.SolvePositionConstraints(b2Settings.b2_contactBaumgarte);var u=true;for(n=0;n<this.m_jointCount;++n){var a=this.m_joints[n].SolvePositionConstraints();u=u&&a}if(o&&u){break}}}i.PostSolve();for(n=0;n<this.m_bodyCount;++n){r=this.m_bodies[n];if(r.m_invMass==0)continue;r.m_R.Set(r.m_rotation);r.SynchronizeShapes();r.m_force.Set(0,0);r.m_torque=0}},UpdateSleep:function(e){var t=0;var n;var r=Number.MAX_VALUE;var i=b2Settings.b2_linearSleepTolerance*b2Settings.b2_linearSleepTolerance;var s=b2Settings.b2_angularSleepTolerance*b2Settings.b2_angularSleepTolerance;for(t=0;t<this.m_bodyCount;++t){n=this.m_bodies[t];if(n.m_invMass==0){continue}if((n.m_flags&b2Body.e_allowSleepFlag)==0){n.m_sleepTime=0;r=0}if((n.m_flags&b2Body.e_allowSleepFlag)==0||n.m_angularVelocity*n.m_angularVelocity>s||b2Math.b2Dot(n.m_linearVelocity,n.m_linearVelocity)>i){n.m_sleepTime=0;r=0}else{n.m_sleepTime+=e;r=b2Math.b2Min(r,n.m_sleepTime)}}if(r>=b2Settings.b2_timeToSleep){for(t=0;t<this.m_bodyCount;++t){n=this.m_bodies[t];n.m_flags|=b2Body.e_sleepFlag}}},AddBody:function(e){this.m_bodies[this.m_bodyCount++]=e},AddContact:function(e){this.m_contacts[this.m_contactCount++]=e},AddJoint:function(e){this.m_joints[this.m_jointCount++]=e},m_allocator:null,m_bodies:null,m_contacts:null,m_joints:null,m_bodyCount:0,m_jointCount:0,m_contactCount:0,m_bodyCapacity:0,m_contactCapacity:0,m_jointCapacity:0,m_positionError:null};b2Island.m_positionIterationCount=0;var b2TimeStep=Class.create();b2TimeStep.prototype={dt:null,inv_dt:null,iterations:0,initialize:function(){}};var b2ContactNode=Class.create();b2ContactNode.prototype={other:null,contact:null,prev:null,next:null,initialize:function(){}};var b2Contact=Class.create();b2Contact.prototype={GetManifolds:function(){return null},GetManifoldCount:function(){return this.m_manifoldCount},GetNext:function(){return this.m_next},GetShape1:function(){return this.m_shape1},GetShape2:function(){return this.m_shape2},initialize:function(e,t){this.m_node1=new b2ContactNode;this.m_node2=new b2ContactNode;this.m_flags=0;if(!e||!t){this.m_shape1=null;this.m_shape2=null;return}this.m_shape1=e;this.m_shape2=t;this.m_manifoldCount=0;this.m_friction=Math.sqrt(this.m_shape1.m_friction*this.m_shape2.m_friction);this.m_restitution=b2Math.b2Max(this.m_shape1.m_restitution,this.m_shape2.m_restitution);this.m_prev=null;this.m_next=null;this.m_node1.contact=null;this.m_node1.prev=null;this.m_node1.next=null;this.m_node1.other=null;this.m_node2.contact=null;this.m_node2.prev=null;this.m_node2.next=null;this.m_node2.other=null},Evaluate:function(){},m_flags:0,m_prev:null,m_next:null,m_node1:new b2ContactNode,m_node2:new b2ContactNode,m_shape1:null,m_shape2:null,m_manifoldCount:0,m_friction:null,m_restitution:null};b2Contact.e_islandFlag=1;b2Contact.e_destroyFlag=2;b2Contact.AddType=function(e,t,n,r){b2Contact.s_registers[n][r].createFcn=e;b2Contact.s_registers[n][r].destroyFcn=t;b2Contact.s_registers[n][r].primary=true;if(n!=r){b2Contact.s_registers[r][n].createFcn=e;b2Contact.s_registers[r][n].destroyFcn=t;b2Contact.s_registers[r][n].primary=false}};b2Contact.InitializeRegisters=function(){b2Contact.s_registers=new Array(b2Shape.e_shapeTypeCount);for(var e=0;e<b2Shape.e_shapeTypeCount;e++){b2Contact.s_registers[e]=new Array(b2Shape.e_shapeTypeCount);for(var t=0;t<b2Shape.e_shapeTypeCount;t++){b2Contact.s_registers[e][t]=new b2ContactRegister}}b2Contact.AddType(b2CircleContact.Create,b2CircleContact.Destroy,b2Shape.e_circleShape,b2Shape.e_circleShape);b2Contact.AddType(b2PolyAndCircleContact.Create,b2PolyAndCircleContact.Destroy,b2Shape.e_polyShape,b2Shape.e_circleShape);b2Contact.AddType(b2PolyContact.Create,b2PolyContact.Destroy,b2Shape.e_polyShape,b2Shape.e_polyShape)};b2Contact.Create=function(e,t,n){if(b2Contact.s_initialized==false){b2Contact.InitializeRegisters();b2Contact.s_initialized=true}var r=e.m_type;var i=t.m_type;var s=b2Contact.s_registers[r][i].createFcn;if(s){if(b2Contact.s_registers[r][i].primary){return s(e,t,n)}else{var o=s(t,e,n);for(var u=0;u<o.GetManifoldCount();++u){var a=o.GetManifolds()[u];a.normal=a.normal.Negative()}return o}}else{return null}};b2Contact.Destroy=function(e,t){if(e.GetManifoldCount()>0){e.m_shape1.m_body.WakeUp();e.m_shape2.m_body.WakeUp()}var n=e.m_shape1.m_type;var r=e.m_shape2.m_type;var i=b2Contact.s_registers[n][r].destroyFcn;i(e,t)};b2Contact.s_registers=null;b2Contact.s_initialized=false;var b2ContactConstraint=Class.create();b2ContactConstraint.prototype={initialize:function(){this.normal=new b2Vec2;this.points=new Array(b2Settings.b2_maxManifoldPoints);for(var e=0;e<b2Settings.b2_maxManifoldPoints;e++){this.points[e]=new b2ContactConstraintPoint}},points:null,normal:new b2Vec2,manifold:null,body1:null,body2:null,friction:null,restitution:null,pointCount:0};var b2ContactConstraintPoint=Class.create();b2ContactConstraintPoint.prototype={localAnchor1:new b2Vec2,localAnchor2:new b2Vec2,normalImpulse:null,tangentImpulse:null,positionImpulse:null,normalMass:null,tangentMass:null,separation:null,velocityBias:null,initialize:function(){this.localAnchor1=new b2Vec2;this.localAnchor2=new b2Vec2}};var b2ContactRegister=Class.create();b2ContactRegister.prototype={createFcn:null,destroyFcn:null,primary:null,initialize:function(){}};var b2ContactSolver=Class.create();b2ContactSolver.prototype={initialize:function(e,t,n){this.m_constraints=new Array;this.m_allocator=n;var r=0;var i;var s;this.m_constraintCount=0;for(r=0;r<t;++r){this.m_constraintCount+=e[r].GetManifoldCount()}for(r=0;r<this.m_constraintCount;r++){this.m_constraints[r]=new b2ContactConstraint}var o=0;for(r=0;r<t;++r){var u=e[r];var a=u.m_shape1.m_body;var f=u.m_shape2.m_body;var l=u.GetManifoldCount();var c=u.GetManifolds();var h=u.m_friction;var p=u.m_restitution;var d=a.m_linearVelocity.x;var v=a.m_linearVelocity.y;var m=f.m_linearVelocity.x;var g=f.m_linearVelocity.y;var y=a.m_angularVelocity;var b=f.m_angularVelocity;for(var w=0;w<l;++w){var E=c[w];var S=E.normal.x;var x=E.normal.y;var T=this.m_constraints[o];T.body1=a;T.body2=f;T.manifold=E;T.normal.x=S;T.normal.y=x;T.pointCount=E.pointCount;T.friction=h;T.restitution=p;for(var N=0;N<T.pointCount;++N){var C=E.points[N];var k=T.points[N];k.normalImpulse=C.normalImpulse;k.tangentImpulse=C.tangentImpulse;k.separation=C.separation;var L=C.position.x-a.m_position.x;var A=C.position.y-a.m_position.y;var O=C.position.x-f.m_position.x;var M=C.position.y-f.m_position.y;i=k.localAnchor1;s=a.m_R;i.x=L*s.col1.x+A*s.col1.y;i.y=L*s.col2.x+A*s.col2.y;i=k.localAnchor2;s=f.m_R;i.x=O*s.col1.x+M*s.col1.y;i.y=O*s.col2.x+M*s.col2.y;var _=L*L+A*A;var D=O*O+M*M;var P=L*S+A*x;var H=O*S+M*x;var B=a.m_invMass+f.m_invMass;B+=a.m_invI*(_-P*P)+f.m_invI*(D-H*H);k.normalMass=1/B;var j=x;var F=-S;var I=L*j+A*F;var q=O*j+M*F;var R=a.m_invMass+f.m_invMass;R+=a.m_invI*(_-I*I)+f.m_invI*(D-q*q);k.tangentMass=1/R;k.velocityBias=0;if(k.separation>0){k.velocityBias=-60*k.separation}var U=m+ -b*M-d- -y*A;var z=g+b*O-v-y*L;var W=T.normal.x*U+T.normal.y*z;if(W<-b2Settings.b2_velocityThreshold){k.velocityBias+=-T.restitution*W}}++o}}},PreSolve:function(){var e;var t;var n;for(var r=0;r<this.m_constraintCount;++r){var i=this.m_constraints[r];var s=i.body1;var o=i.body2;var u=s.m_invMass;var a=s.m_invI;var f=o.m_invMass;var l=o.m_invI;var c=i.normal.x;var h=i.normal.y;var p=h;var d=-c;var v=0;var m=0;if(b2World.s_enableWarmStarting){m=i.pointCount;for(v=0;v<m;++v){var g=i.points[v];var y=g.normalImpulse*c+g.tangentImpulse*p;var b=g.normalImpulse*h+g.tangentImpulse*d;n=s.m_R;e=g.localAnchor1;var w=n.col1.x*e.x+n.col2.x*e.y;var E=n.col1.y*e.x+n.col2.y*e.y;n=o.m_R;e=g.localAnchor2;var S=n.col1.x*e.x+n.col2.x*e.y;var x=n.col1.y*e.x+n.col2.y*e.y;s.m_angularVelocity-=a*(w*b-E*y);s.m_linearVelocity.x-=u*y;s.m_linearVelocity.y-=u*b;o.m_angularVelocity+=l*(S*b-x*y);o.m_linearVelocity.x+=f*y;o.m_linearVelocity.y+=f*b;g.positionImpulse=0}}else{m=i.pointCount;for(v=0;v<m;++v){var T=i.points[v];T.normalImpulse=0;T.tangentImpulse=0;T.positionImpulse=0}}}},SolveVelocityConstraints:function(){var e=0;var t;var n;var r;var i;var s;var o;var u;var a;var f;var l;var c;var h;var p;for(var d=0;d<this.m_constraintCount;++d){var v=this.m_constraints[d];var m=v.body1;var g=v.body2;var y=m.m_angularVelocity;var b=m.m_linearVelocity;var w=g.m_angularVelocity;var E=g.m_linearVelocity;var S=m.m_invMass;var x=m.m_invI;var T=g.m_invMass;var N=g.m_invI;var C=v.normal.x;var k=v.normal.y;var L=k;var A=-C;var O=v.pointCount;for(e=0;e<O;++e){t=v.points[e];h=m.m_R;p=t.localAnchor1;n=h.col1.x*p.x+h.col2.x*p.y;r=h.col1.y*p.x+h.col2.y*p.y;h=g.m_R;p=t.localAnchor2;i=h.col1.x*p.x+h.col2.x*p.y;s=h.col1.y*p.x+h.col2.y*p.y;o=E.x+ -w*s-b.x- -y*r;u=E.y+w*i-b.y-y*n;var M=o*C+u*k;a=-t.normalMass*(M-t.velocityBias);f=b2Math.b2Max(t.normalImpulse+a,0);a=f-t.normalImpulse;l=a*C;c=a*k;b.x-=S*l;b.y-=S*c;y-=x*(n*c-r*l);E.x+=T*l;E.y+=T*c;w+=N*(i*c-s*l);t.normalImpulse=f;o=E.x+ -w*s-b.x- -y*r;u=E.y+w*i-b.y-y*n;var _=o*L+u*A;a=t.tangentMass*-_;var D=v.friction*t.normalImpulse;f=b2Math.b2Clamp(t.tangentImpulse+a,-D,D);a=f-t.tangentImpulse;l=a*L;c=a*A;b.x-=S*l;b.y-=S*c;y-=x*(n*c-r*l);E.x+=T*l;E.y+=T*c;w+=N*(i*c-s*l);t.tangentImpulse=f}m.m_angularVelocity=y;g.m_angularVelocity=w}},SolvePositionConstraints:function(e){var t=0;var n;var r;for(var i=0;i<this.m_constraintCount;++i){var s=this.m_constraints[i];var o=s.body1;var u=s.body2;var a=o.m_position;var f=o.m_rotation;var l=u.m_position;var c=u.m_rotation;var h=o.m_invMass;var p=o.m_invI;var d=u.m_invMass;var v=u.m_invI;var m=s.normal.x;var g=s.normal.y;var y=g;var b=-m;var w=s.pointCount;for(var E=0;E<w;++E){var S=s.points[E];n=o.m_R;r=S.localAnchor1;var x=n.col1.x*r.x+n.col2.x*r.y;var T=n.col1.y*r.x+n.col2.y*r.y;n=u.m_R;r=S.localAnchor2;var N=n.col1.x*r.x+n.col2.x*r.y;var C=n.col1.y*r.x+n.col2.y*r.y;var k=a.x+x;var L=a.y+T;var A=l.x+N;var O=l.y+C;var M=A-k;var _=O-L;var D=M*m+_*g+S.separation;t=b2Math.b2Min(t,D);var P=e*b2Math.b2Clamp(D+b2Settings.b2_linearSlop,-b2Settings.b2_maxLinearCorrection,0);var H=-S.normalMass*P;var B=S.positionImpulse;S.positionImpulse=b2Math.b2Max(B+H,0);H=S.positionImpulse-B;var j=H*m;var F=H*g;a.x-=h*j;a.y-=h*F;f-=p*(x*F-T*j);o.m_R.Set(f);l.x+=d*j;l.y+=d*F;c+=v*(N*F-C*j);u.m_R.Set(c)}o.m_rotation=f;u.m_rotation=c}return t>=-b2Settings.b2_linearSlop},PostSolve:function(){for(var e=0;e<this.m_constraintCount;++e){var t=this.m_constraints[e];var n=t.manifold;for(var r=0;r<t.pointCount;++r){var i=n.points[r];var s=t.points[r];i.normalImpulse=s.normalImpulse;i.tangentImpulse=s.tangentImpulse}}},m_allocator:null,m_constraints:new Array,m_constraintCount:0};var b2CircleContact=Class.create();Object.extend(b2CircleContact.prototype,b2Contact.prototype);Object.extend(b2CircleContact.prototype,{initialize:function(e,t){this.m_node1=new b2ContactNode;this.m_node2=new b2ContactNode;this.m_flags=0;if(!e||!t){this.m_shape1=null;this.m_shape2=null;return}this.m_shape1=e;this.m_shape2=t;this.m_manifoldCount=0;this.m_friction=Math.sqrt(this.m_shape1.m_friction*this.m_shape2.m_friction);this.m_restitution=b2Math.b2Max(this.m_shape1.m_restitution,this.m_shape2.m_restitution);this.m_prev=null;this.m_next=null;this.m_node1.contact=null;this.m_node1.prev=null;this.m_node1.next=null;this.m_node1.other=null;this.m_node2.contact=null;this.m_node2.prev=null;this.m_node2.next=null;this.m_node2.other=null;this.m_manifold=[new b2Manifold];this.m_manifold[0].pointCount=0;this.m_manifold[0].points[0].normalImpulse=0;this.m_manifold[0].points[0].tangentImpulse=0},Evaluate:function(){b2Collision.b2CollideCircle(this.m_manifold[0],this.m_shape1,this.m_shape2,false);if(this.m_manifold[0].pointCount>0){this.m_manifoldCount=1}else{this.m_manifoldCount=0}},GetManifolds:function(){return this.m_manifold},m_manifold:[new b2Manifold]});b2CircleContact.Create=function(e,t,n){return new b2CircleContact(e,t)};b2CircleContact.Destroy=function(e,t){};var b2Conservative=Class.create();b2Conservative.prototype={initialize:function(){}};b2Conservative.R1=new b2Mat22;b2Conservative.R2=new b2Mat22;b2Conservative.x1=new b2Vec2;b2Conservative.x2=new b2Vec2;b2Conservative.Conservative=function(e,t){var n=e.GetBody();var r=t.GetBody();var i=n.m_position.x-n.m_position0.x;var s=n.m_position.y-n.m_position0.y;var o=n.m_rotation-n.m_rotation0;var u=r.m_position.x-r.m_position0.x;var a=r.m_position.y-r.m_position0.y;var f=r.m_rotation-r.m_rotation0;var l=e.GetMaxRadius();var c=t.GetMaxRadius();var h=n.m_position0.x;var p=n.m_position0.y;var v=n.m_rotation0;var m=r.m_position0.x;var g=r.m_position0.y;var y=r.m_rotation0;var b=h;var w=p;var E=v;var S=m;var x=g;var T=y;b2Conservative.R1.Set(E);b2Conservative.R2.Set(T);e.QuickSync(p1,b2Conservative.R1);t.QuickSync(p2,b2Conservative.R2);var N=0;var C=10;var k;var L;var A=0;var O=true;for(var M=0;M<C;++M){var _=b2Distance.Distance(b2Conservative.x1,b2Conservative.x2,e,t);if(_<b2Settings.b2_linearSlop){if(M==0){O=false}else{O=true}break}if(M==0){k=b2Conservative.x2.x-b2Conservative.x1.x;L=b2Conservative.x2.y-b2Conservative.x1.y;var D=Math.sqrt(k*k+L*L);var P=k*(i-u)+L*(s-a)+Math.abs(o)*l+Math.abs(f)*c;if(Math.abs(P)<Number.MIN_VALUE){O=false;break}A=1/P}var H=_*A;var B=N+H;if(B<0||1<B){O=false;break}if(B<(1+100*Number.MIN_VALUE)*N){O=true;break}N=B;b=h+N*v1.x;w=p+N*v1.y;E=v+N*o;S=m+N*v2.x;x=g+N*v2.y;T=y+N*f;b2Conservative.R1.Set(E);b2Conservative.R2.Set(T);e.QuickSync(p1,b2Conservative.R1);t.QuickSync(p2,b2Conservative.R2)}if(O){k=b2Conservative.x2.x-b2Conservative.x1.x;L=b2Conservative.x2.y-b2Conservative.x1.y;var j=Math.sqrt(k*k+L*L);if(j>FLT_EPSILON){d*=b2_linearSlop/j}if(n.IsStatic()){n.m_position.x=b;n.m_position.y=w}else{n.m_position.x=b-k;n.m_position.y=w-L}n.m_rotation=E;n.m_R.Set(E);n.QuickSyncShapes();if(r.IsStatic()){r.m_position.x=S;r.m_position.y=x}else{r.m_position.x=S+k;r.m_position.y=x+L}r.m_position.x=S+k;r.m_position.y=x+L;r.m_rotation=T;r.m_R.Set(T);r.QuickSyncShapes();return true}e.QuickSync(n.m_position,n.m_R);t.QuickSync(r.m_position,r.m_R);return false};var b2NullContact=Class.create();Object.extend(b2NullContact.prototype,b2Contact.prototype);Object.extend(b2NullContact.prototype,{initialize:function(e,t){this.m_node1=new b2ContactNode;this.m_node2=new b2ContactNode;this.m_flags=0;if(!e||!t){this.m_shape1=null;this.m_shape2=null;return}this.m_shape1=e;this.m_shape2=t;this.m_manifoldCount=0;this.m_friction=Math.sqrt(this.m_shape1.m_friction*this.m_shape2.m_friction);this.m_restitution=b2Math.b2Max(this.m_shape1.m_restitution,this.m_shape2.m_restitution);this.m_prev=null;this.m_next=null;this.m_node1.contact=null;this.m_node1.prev=null;this.m_node1.next=null;this.m_node1.other=null;this.m_node2.contact=null;this.m_node2.prev=null;this.m_node2.next=null;this.m_node2.other=null},Evaluate:function(){},GetManifolds:function(){return null}});var b2PolyAndCircleContact=Class.create();Object.extend(b2PolyAndCircleContact.prototype,b2Contact.prototype);Object.extend(b2PolyAndCircleContact.prototype,{initialize:function(e,t){this.m_node1=new b2ContactNode;this.m_node2=new b2ContactNode;this.m_flags=0;if(!e||!t){this.m_shape1=null;this.m_shape2=null;return}this.m_shape1=e;this.m_shape2=t;this.m_manifoldCount=0;this.m_friction=Math.sqrt(this.m_shape1.m_friction*this.m_shape2.m_friction);this.m_restitution=b2Math.b2Max(this.m_shape1.m_restitution,this.m_shape2.m_restitution);this.m_prev=null;this.m_next=null;this.m_node1.contact=null;this.m_node1.prev=null;this.m_node1.next=null;this.m_node1.other=null;this.m_node2.contact=null;this.m_node2.prev=null;this.m_node2.next=null;this.m_node2.other=null;this.m_manifold=[new b2Manifold];b2Settings.b2Assert(this.m_shape1.m_type==b2Shape.e_polyShape);b2Settings.b2Assert(this.m_shape2.m_type==b2Shape.e_circleShape);this.m_manifold[0].pointCount=0;this.m_manifold[0].points[0].normalImpulse=0;this.m_manifold[0].points[0].tangentImpulse=0},Evaluate:function(){b2Collision.b2CollidePolyAndCircle(this.m_manifold[0],this.m_shape1,this.m_shape2,false);if(this.m_manifold[0].pointCount>0){this.m_manifoldCount=1}else{this.m_manifoldCount=0}},GetManifolds:function(){return this.m_manifold},m_manifold:[new b2Manifold]});b2PolyAndCircleContact.Create=function(e,t,n){return new b2PolyAndCircleContact(e,t)};b2PolyAndCircleContact.Destroy=function(e,t){};var b2PolyContact=Class.create();Object.extend(b2PolyContact.prototype,b2Contact.prototype);Object.extend(b2PolyContact.prototype,{initialize:function(e,t){this.m_node1=new b2ContactNode;this.m_node2=new b2ContactNode;this.m_flags=0;if(!e||!t){this.m_shape1=null;this.m_shape2=null;return}this.m_shape1=e;this.m_shape2=t;this.m_manifoldCount=0;this.m_friction=Math.sqrt(this.m_shape1.m_friction*this.m_shape2.m_friction);this.m_restitution=b2Math.b2Max(this.m_shape1.m_restitution,this.m_shape2.m_restitution);this.m_prev=null;this.m_next=null;this.m_node1.contact=null;this.m_node1.prev=null;this.m_node1.next=null;this.m_node1.other=null;this.m_node2.contact=null;this.m_node2.prev=null;this.m_node2.next=null;this.m_node2.other=null;this.m0=new b2Manifold;this.m_manifold=[new b2Manifold];this.m_manifold[0].pointCount=0},m0:new b2Manifold,Evaluate:function(){var e=this.m_manifold[0];var t=this.m0.points;for(var n=0;n<e.pointCount;n++){var r=t[n];var i=e.points[n];r.normalImpulse=i.normalImpulse;r.tangentImpulse=i.tangentImpulse;r.id=i.id.Copy()}this.m0.pointCount=e.pointCount;b2Collision.b2CollidePoly(e,this.m_shape1,this.m_shape2,false);if(e.pointCount>0){var s=[false,false];for(var o=0;o<e.pointCount;++o){var u=e.points[o];u.normalImpulse=0;u.tangentImpulse=0;var a=u.id.key;for(var f=0;f<this.m0.pointCount;++f){if(s[f]==true)continue;var l=this.m0.points[f];var c=l.id;if(c.key==a){s[f]=true;u.normalImpulse=l.normalImpulse;u.tangentImpulse=l.tangentImpulse;break}}}this.m_manifoldCount=1}else{this.m_manifoldCount=0}},GetManifolds:function(){return this.m_manifold},m_manifold:[new b2Manifold]});b2PolyContact.Create=function(e,t,n){return new b2PolyContact(e,t)};b2PolyContact.Destroy=function(e,t){};var b2ContactManager=Class.create();Object.extend(b2ContactManager.prototype,b2PairCallback.prototype);Object.extend(b2ContactManager.prototype,{initialize:function(){this.m_nullContact=new b2NullContact;this.m_world=null;this.m_destroyImmediate=false},PairAdded:function(e,t){var n=e;var r=t;var i=n.m_body;var s=r.m_body;if(i.IsStatic()&&s.IsStatic()){return this.m_nullContact}if(n.m_body==r.m_body){return this.m_nullContact}if(s.IsConnected(i)){return this.m_nullContact}if(this.m_world.m_filter!=null&&this.m_world.m_filter.ShouldCollide(n,r)==false){return this.m_nullContact}if(s.m_invMass==0){var o=n;n=r;r=o;var u=i;i=s;s=u}var a=b2Contact.Create(n,r,this.m_world.m_blockAllocator);if(a==null){return this.m_nullContact}else{a.m_prev=null;a.m_next=this.m_world.m_contactList;if(this.m_world.m_contactList!=null){this.m_world.m_contactList.m_prev=a}this.m_world.m_contactList=a;this.m_world.m_contactCount++}return a},PairRemoved:function(e,t,n){if(n==null){return}var r=n;if(r!=this.m_nullContact){if(this.m_destroyImmediate==true){this.DestroyContact(r);r=null}else{r.m_flags|=b2Contact.e_destroyFlag}}},DestroyContact:function(e){if(e.m_prev){e.m_prev.m_next=e.m_next}if(e.m_next){e.m_next.m_prev=e.m_prev}if(e==this.m_world.m_contactList){this.m_world.m_contactList=e.m_next}if(e.GetManifoldCount()>0){var t=e.m_shape1.m_body;var n=e.m_shape2.m_body;var r=e.m_node1;var i=e.m_node2;t.WakeUp();n.WakeUp();if(r.prev){r.prev.next=r.next}if(r.next){r.next.prev=r.prev}if(r==t.m_contactList){t.m_contactList=r.next}r.prev=null;r.next=null;if(i.prev){i.prev.next=i.next}if(i.next){i.next.prev=i.prev}if(i==n.m_contactList){n.m_contactList=i.next}i.prev=null;i.next=null}b2Contact.Destroy(e,this.m_world.m_blockAllocator);--this.m_world.m_contactCount},CleanContactList:function(){var e=this.m_world.m_contactList;while(e!=null){var t=e;e=e.m_next;if(t.m_flags&b2Contact.e_destroyFlag){this.DestroyContact(t);t=null}}},Collide:function(){var e;var t;var n;var r;for(var i=this.m_world.m_contactList;i!=null;i=i.m_next){if(i.m_shape1.m_body.IsSleeping()&&i.m_shape2.m_body.IsSleeping()){continue}var s=i.GetManifoldCount();i.Evaluate();var o=i.GetManifoldCount();if(s==0&&o>0){e=i.m_shape1.m_body;t=i.m_shape2.m_body;n=i.m_node1;r=i.m_node2;n.contact=i;n.other=t;n.prev=null;n.next=e.m_contactList;if(n.next!=null){n.next.prev=i.m_node1}e.m_contactList=i.m_node1;r.contact=i;r.other=e;r.prev=null;r.next=t.m_contactList;if(r.next!=null){r.next.prev=r}t.m_contactList=r}else if(s>0&&o==0){e=i.m_shape1.m_body;t=i.m_shape2.m_body;n=i.m_node1;r=i.m_node2;if(n.prev){n.prev.next=n.next}if(n.next){n.next.prev=n.prev}if(n==e.m_contactList){e.m_contactList=n.next}n.prev=null;n.next=null;if(r.prev){r.prev.next=r.next}if(r.next){r.next.prev=r.prev}if(r==t.m_contactList){t.m_contactList=r.next}r.prev=null;r.next=null}}},m_world:null,m_nullContact:new b2NullContact,m_destroyImmediate:null});var b2World=Class.create();b2World.prototype={initialize:function(e,t,n){this.step=new b2TimeStep;this.m_contactManager=new b2ContactManager;this.m_listener=null;this.m_filter=b2CollisionFilter.b2_defaultFilter;this.m_bodyList=null;this.m_contactList=null;this.m_jointList=null;this.m_bodyCount=0;this.m_contactCount=0;this.m_jointCount=0;this.m_bodyDestroyList=null;this.m_allowSleep=n;this.m_gravity=t;this.m_contactManager.m_world=this;this.m_broadPhase=new b2BroadPhase(e,this.m_contactManager);var r=new b2BodyDef;this.m_groundBody=this.CreateBody(r)},SetListener:function(e){this.m_listener=e},SetFilter:function(e){this.m_filter=e},CreateBody:function(e){var t=new b2Body(e,this);t.m_prev=null;t.m_next=this.m_bodyList;if(this.m_bodyList){this.m_bodyList.m_prev=t}this.m_bodyList=t;++this.m_bodyCount;return t},DestroyBody:function(e){if(e.m_flags&b2Body.e_destroyFlag){return}if(e.m_prev){e.m_prev.m_next=e.m_next}if(e.m_next){e.m_next.m_prev=e.m_prev}if(e==this.m_bodyList){this.m_bodyList=e.m_next}e.m_flags|=b2Body.e_destroyFlag;--this.m_bodyCount;e.m_prev=null;e.m_next=this.m_bodyDestroyList;this.m_bodyDestroyList=e},CleanBodyList:function(){this.m_contactManager.m_destroyImmediate=true;var e=this.m_bodyDestroyList;while(e){var t=e;e=e.m_next;var n=t.m_jointList;while(n){var r=n;n=n.next;if(this.m_listener){this.m_listener.NotifyJointDestroyed(r.joint)}this.DestroyJoint(r.joint)}t.Destroy()}this.m_bodyDestroyList=null;this.m_contactManager.m_destroyImmediate=false},CreateJoint:function(e){var t=b2Joint.Create(e,this.m_blockAllocator);t.m_prev=null;t.m_next=this.m_jointList;if(this.m_jointList){this.m_jointList.m_prev=t}this.m_jointList=t;++this.m_jointCount;t.m_node1.joint=t;t.m_node1.other=t.m_body2;t.m_node1.prev=null;t.m_node1.next=t.m_body1.m_jointList;if(t.m_body1.m_jointList)t.m_body1.m_jointList.prev=t.m_node1;t.m_body1.m_jointList=t.m_node1;t.m_node2.joint=t;t.m_node2.other=t.m_body1;t.m_node2.prev=null;t.m_node2.next=t.m_body2.m_jointList;if(t.m_body2.m_jointList)t.m_body2.m_jointList.prev=t.m_node2;t.m_body2.m_jointList=t.m_node2;if(e.collideConnected==false){var n=e.body1.m_shapeCount<e.body2.m_shapeCount?e.body1:e.body2;for(var r=n.m_shapeList;r;r=r.m_next){r.ResetProxy(this.m_broadPhase)}}return t},DestroyJoint:function(e){var t=e.m_collideConnected;if(e.m_prev){e.m_prev.m_next=e.m_next}if(e.m_next){e.m_next.m_prev=e.m_prev}if(e==this.m_jointList){this.m_jointList=e.m_next}var n=e.m_body1;var r=e.m_body2;n.WakeUp();r.WakeUp();if(e.m_node1.prev){e.m_node1.prev.next=e.m_node1.next}if(e.m_node1.next){e.m_node1.next.prev=e.m_node1.prev}if(e.m_node1==n.m_jointList){n.m_jointList=e.m_node1.next}e.m_node1.prev=null;e.m_node1.next=null;if(e.m_node2.prev){e.m_node2.prev.next=e.m_node2.next}if(e.m_node2.next){e.m_node2.next.prev=e.m_node2.prev}if(e.m_node2==r.m_jointList){r.m_jointList=e.m_node2.next}e.m_node2.prev=null;e.m_node2.next=null;b2Joint.Destroy(e,this.m_blockAllocator);--this.m_jointCount;if(t==false){var i=n.m_shapeCount<r.m_shapeCount?n:r;for(var s=i.m_shapeList;s;s=s.m_next){s.ResetProxy(this.m_broadPhase)}}},GetGroundBody:function(){return this.m_groundBody},step:new b2TimeStep,Step:function(e,t){var n;var r;this.step.dt=e;this.step.iterations=t;if(e>0){this.step.inv_dt=1/e}else{this.step.inv_dt=0}this.m_positionIterationCount=0;this.m_contactManager.CleanContactList();this.CleanBodyList();this.m_contactManager.Collide();var i=new b2Island(this.m_bodyCount,this.m_contactCount,this.m_jointCount,this.m_stackAllocator);for(n=this.m_bodyList;n!=null;n=n.m_next){n.m_flags&=~b2Body.e_islandFlag}for(var s=this.m_contactList;s!=null;s=s.m_next){s.m_flags&=~b2Contact.e_islandFlag}for(var o=this.m_jointList;o!=null;o=o.m_next){o.m_islandFlag=false}var u=this.m_bodyCount;var a=new Array(this.m_bodyCount);for(var f=0;f<this.m_bodyCount;f++)a[f]=null;for(var l=this.m_bodyList;l!=null;l=l.m_next){if(l.m_flags&(b2Body.e_staticFlag|b2Body.e_islandFlag|b2Body.e_sleepFlag|b2Body.e_frozenFlag)){continue}i.Clear();var c=0;a[c++]=l;l.m_flags|=b2Body.e_islandFlag;while(c>0){n=a[--c];i.AddBody(n);n.m_flags&=~b2Body.e_sleepFlag;if(n.m_flags&b2Body.e_staticFlag){continue}for(var h=n.m_contactList;h!=null;h=h.next){if(h.contact.m_flags&b2Contact.e_islandFlag){continue}i.AddContact(h.contact);h.contact.m_flags|=b2Contact.e_islandFlag;r=h.other;if(r.m_flags&b2Body.e_islandFlag){continue}a[c++]=r;r.m_flags|=b2Body.e_islandFlag}for(var p=n.m_jointList;p!=null;p=p.next){if(p.joint.m_islandFlag==true){continue}i.AddJoint(p.joint);p.joint.m_islandFlag=true;r=p.other;if(r.m_flags&b2Body.e_islandFlag){continue}a[c++]=r;r.m_flags|=b2Body.e_islandFlag}}i.Solve(this.step,this.m_gravity);this.m_positionIterationCount=b2Math.b2Max(this.m_positionIterationCount,b2Island.m_positionIterationCount);if(this.m_allowSleep){i.UpdateSleep(e)}for(var d=0;d<i.m_bodyCount;++d){n=i.m_bodies[d];if(n.m_flags&b2Body.e_staticFlag){n.m_flags&=~b2Body.e_islandFlag}if(n.IsFrozen()&&this.m_listener){var v=this.m_listener.NotifyBoundaryViolated(n);if(v==b2WorldListener.b2_destroyBody){this.DestroyBody(n);n=null;i.m_bodies[d]=null}}}}this.m_broadPhase.Commit()},Query:function(e,t,n){var r=new Array;var i=this.m_broadPhase.QueryAABB(e,r,n);for(var s=0;s<i;++s){t[s]=r[s]}return i},GetBodyList:function(){return this.m_bodyList},GetJointList:function(){return this.m_jointList},GetContactList:function(){return this.m_contactList},m_blockAllocator:null,m_stackAllocator:null,m_broadPhase:null,m_contactManager:new b2ContactManager,m_bodyList:null,m_contactList:null,m_jointList:null,m_bodyCount:0,m_contactCount:0,m_jointCount:0,m_bodyDestroyList:null,m_gravity:null,m_allowSleep:null,m_groundBody:null,m_listener:null,m_filter:null,m_positionIterationCount:0};b2World.s_enablePositionCorrection=1;b2World.s_enableWarmStarting=1;var b2WorldListener=Class.create();b2WorldListener.prototype={NotifyJointDestroyed:function(e){},NotifyBoundaryViolated:function(e){return b2WorldListener.b2_freezeBody},initialize:function(){}};b2WorldListener.b2_freezeBody=0;b2WorldListener.b2_destroyBody=1;var b2JointNode=Class.create();b2JointNode.prototype={other:null,joint:null,prev:null,next:null,initialize:function(){}};var b2Joint=Class.create();b2Joint.prototype={GetType:function(){return this.m_type},GetAnchor1:function(){return null},GetAnchor2:function(){return null},GetReactionForce:function(e){return null},GetReactionTorque:function(e){return 0},GetBody1:function(){return this.m_body1},GetBody2:function(){return this.m_body2},GetNext:function(){return this.m_next},GetUserData:function(){return this.m_userData},initialize:function(e){this.m_node1=new b2JointNode;this.m_node2=new b2JointNode;this.m_type=e.type;this.m_prev=null;this.m_next=null;this.m_body1=e.body1;this.m_body2=e.body2;this.m_collideConnected=e.collideConnected;this.m_islandFlag=false;this.m_userData=e.userData},PrepareVelocitySolver:function(){},SolveVelocityConstraints:function(e){},PreparePositionSolver:function(){},SolvePositionConstraints:function(){return false},m_type:0,m_prev:null,m_next:null,m_node1:new b2JointNode,m_node2:new b2JointNode,m_body1:null,m_body2:null,m_islandFlag:null,m_collideConnected:null,m_userData:null};b2Joint.Create=function(e,t){var n=null;switch(e.type){case b2Joint.e_distanceJoint:{n=new b2DistanceJoint(e)}break;case b2Joint.e_mouseJoint:{n=new b2MouseJoint(e)}break;case b2Joint.e_prismaticJoint:{n=new b2PrismaticJoint(e)}break;case b2Joint.e_revoluteJoint:{n=new b2RevoluteJoint(e)}break;case b2Joint.e_pulleyJoint:{n=new b2PulleyJoint(e)}break;case b2Joint.e_gearJoint:{n=new b2GearJoint(e)}break;default:break}return n};b2Joint.Destroy=function(e,t){};b2Joint.e_unknownJoint=0;b2Joint.e_revoluteJoint=1;b2Joint.e_prismaticJoint=2;b2Joint.e_distanceJoint=3;b2Joint.e_pulleyJoint=4;b2Joint.e_mouseJoint=5;b2Joint.e_gearJoint=6;b2Joint.e_inactiveLimit=0;b2Joint.e_atLowerLimit=1;b2Joint.e_atUpperLimit=2;b2Joint.e_equalLimits=3;var b2JointDef=Class.create();b2JointDef.prototype={initialize:function(){this.type=b2Joint.e_unknownJoint;this.userData=null;this.body1=null;this.body2=null;this.collideConnected=false},type:0,userData:null,body1:null,body2:null,collideConnected:null};var b2DistanceJoint=Class.create();Object.extend(b2DistanceJoint.prototype,b2Joint.prototype);Object.extend(b2DistanceJoint.prototype,{initialize:function(e){this.m_node1=new b2JointNode;this.m_node2=new b2JointNode;this.m_type=e.type;this.m_prev=null;this.m_next=null;this.m_body1=e.body1;this.m_body2=e.body2;this.m_collideConnected=e.collideConnected;this.m_islandFlag=false;this.m_userData=e.userData;this.m_localAnchor1=new b2Vec2;this.m_localAnchor2=new b2Vec2;this.m_u=new b2Vec2;var t;var n;var r;t=this.m_body1.m_R;n=e.anchorPoint1.x-this.m_body1.m_position.x;r=e.anchorPoint1.y-this.m_body1.m_position.y;this.m_localAnchor1.x=n*t.col1.x+r*t.col1.y;this.m_localAnchor1.y=n*t.col2.x+r*t.col2.y;t=this.m_body2.m_R;n=e.anchorPoint2.x-this.m_body2.m_position.x;r=e.anchorPoint2.y-this.m_body2.m_position.y;this.m_localAnchor2.x=n*t.col1.x+r*t.col1.y;this.m_localAnchor2.y=n*t.col2.x+r*t.col2.y;n=e.anchorPoint2.x-e.anchorPoint1.x;r=e.anchorPoint2.y-e.anchorPoint1.y;this.m_length=Math.sqrt(n*n+r*r);this.m_impulse=0},PrepareVelocitySolver:function(){var e;e=this.m_body1.m_R;var t=e.col1.x*this.m_localAnchor1.x+e.col2.x*this.m_localAnchor1.y;var n=e.col1.y*this.m_localAnchor1.x+e.col2.y*this.m_localAnchor1.y;e=this.m_body2.m_R;var r=e.col1.x*this.m_localAnchor2.x+e.col2.x*this.m_localAnchor2.y;var i=e.col1.y*this.m_localAnchor2.x+e.col2.y*this.m_localAnchor2.y;this.m_u.x=this.m_body2.m_position.x+r-this.m_body1.m_position.x-t;this.m_u.y=this.m_body2.m_position.y+i-this.m_body1.m_position.y-n;var s=Math.sqrt(this.m_u.x*this.m_u.x+this.m_u.y*this.m_u.y);if(s>b2Settings.b2_linearSlop){this.m_u.Multiply(1/s)}else{this.m_u.SetZero()}var o=t*this.m_u.y-n*this.m_u.x;var u=r*this.m_u.y-i*this.m_u.x;this.m_mass=this.m_body1.m_invMass+this.m_body1.m_invI*o*o+this.m_body2.m_invMass+this.m_body2.m_invI*u*u;this.m_mass=1/this.m_mass;if(b2World.s_enableWarmStarting){var a=this.m_impulse*this.m_u.x;var f=this.m_impulse*this.m_u.y;this.m_body1.m_linearVelocity.x-=this.m_body1.m_invMass*a;this.m_body1.m_linearVelocity.y-=this.m_body1.m_invMass*f;this.m_body1.m_angularVelocity-=this.m_body1.m_invI*(t*f-n*a);this.m_body2.m_linearVelocity.x+=this.m_body2.m_invMass*a;this.m_body2.m_linearVelocity.y+=this.m_body2.m_invMass*f;this.m_body2.m_angularVelocity+=this.m_body2.m_invI*(r*f-i*a)}else{this.m_impulse=0}},SolveVelocityConstraints:function(e){var t;t=this.m_body1.m_R;var n=t.col1.x*this.m_localAnchor1.x+t.col2.x*this.m_localAnchor1.y;var r=t.col1.y*this.m_localAnchor1.x+t.col2.y*this.m_localAnchor1.y;t=this.m_body2.m_R;var i=t.col1.x*this.m_localAnchor2.x+t.col2.x*this.m_localAnchor2.y;var s=t.col1.y*this.m_localAnchor2.x+t.col2.y*this.m_localAnchor2.y;var o=this.m_body1.m_linearVelocity.x+ -this.m_body1.m_angularVelocity*r;var u=this.m_body1.m_linearVelocity.y+this.m_body1.m_angularVelocity*n;var a=this.m_body2.m_linearVelocity.x+ -this.m_body2.m_angularVelocity*s;var f=this.m_body2.m_linearVelocity.y+this.m_body2.m_angularVelocity*i;var l=this.m_u.x*(a-o)+this.m_u.y*(f-u);var c=-this.m_mass*l;this.m_impulse+=c;var h=c*this.m_u.x;var p=c*this.m_u.y;this.m_body1.m_linearVelocity.x-=this.m_body1.m_invMass*h;this.m_body1.m_linearVelocity.y-=this.m_body1.m_invMass*p;this.m_body1.m_angularVelocity-=this.m_body1.m_invI*(n*p-r*h);this.m_body2.m_linearVelocity.x+=this.m_body2.m_invMass*h;this.m_body2.m_linearVelocity.y+=this.m_body2.m_invMass*p;this.m_body2.m_angularVelocity+=this.m_body2.m_invI*(i*p-s*h)},SolvePositionConstraints:function(){var e;e=this.m_body1.m_R;var t=e.col1.x*this.m_localAnchor1.x+e.col2.x*this.m_localAnchor1.y;var n=e.col1.y*this.m_localAnchor1.x+e.col2.y*this.m_localAnchor1.y;e=this.m_body2.m_R;var r=e.col1.x*this.m_localAnchor2.x+e.col2.x*this.m_localAnchor2.y;var i=e.col1.y*this.m_localAnchor2.x+e.col2.y*this.m_localAnchor2.y;var s=this.m_body2.m_position.x+r-this.m_body1.m_position.x-t;var o=this.m_body2.m_position.y+i-this.m_body1.m_position.y-n;var u=Math.sqrt(s*s+o*o);s/=u;o/=u;var a=u-this.m_length;a=b2Math.b2Clamp(a,-b2Settings.b2_maxLinearCorrection,b2Settings.b2_maxLinearCorrection);var f=-this.m_mass*a;this.m_u.Set(s,o);var l=f*this.m_u.x;var c=f*this.m_u.y;this.m_body1.m_position.x-=this.m_body1.m_invMass*l;this.m_body1.m_position.y-=this.m_body1.m_invMass*c;this.m_body1.m_rotation-=this.m_body1.m_invI*(t*c-n*l);this.m_body2.m_position.x+=this.m_body2.m_invMass*l;this.m_body2.m_position.y+=this.m_body2.m_invMass*c;this.m_body2.m_rotation+=this.m_body2.m_invI*(r*c-i*l);this.m_body1.m_R.Set(this.m_body1.m_rotation);this.m_body2.m_R.Set(this.m_body2.m_rotation);return b2Math.b2Abs(a)<b2Settings.b2_linearSlop},GetAnchor1:function(){return b2Math.AddVV(this.m_body1.m_position,b2Math.b2MulMV(this.m_body1.m_R,this.m_localAnchor1))},GetAnchor2:function(){return b2Math.AddVV(this.m_body2.m_position,b2Math.b2MulMV(this.m_body2.m_R,this.m_localAnchor2))},GetReactionForce:function(e){var t=new b2Vec2;t.SetV(this.m_u);t.Multiply(this.m_impulse*e);return t},GetReactionTorque:function(e){return 0},m_localAnchor1:new b2Vec2,m_localAnchor2:new b2Vec2,m_u:new b2Vec2,m_impulse:null,m_mass:null,m_length:null});var b2DistanceJointDef=Class.create();Object.extend(b2DistanceJointDef.prototype,b2JointDef.prototype);Object.extend(b2DistanceJointDef.prototype,{initialize:function(){this.type=b2Joint.e_unknownJoint;this.userData=null;this.body1=null;this.body2=null;this.collideConnected=false;this.anchorPoint1=new b2Vec2;this.anchorPoint2=new b2Vec2;this.type=b2Joint.e_distanceJoint},anchorPoint1:new b2Vec2,anchorPoint2:new b2Vec2});var b2Jacobian=Class.create();b2Jacobian.prototype={linear1:new b2Vec2,angular1:null,linear2:new b2Vec2,angular2:null,SetZero:function(){this.linear1.SetZero();this.angular1=0;this.linear2.SetZero();this.angular2=0},Set:function(e,t,n,r){this.linear1.SetV(e);this.angular1=t;this.linear2.SetV(n);this.angular2=r},Compute:function(e,t,n,r){return this.linear1.x*e.x+this.linear1.y*e.y+this.angular1*t+(this.linear2.x*n.x+this.linear2.y*n.y)+this.angular2*r},initialize:function(){this.linear1=new b2Vec2;this.linear2=new b2Vec2}};var b2GearJoint=Class.create();Object.extend(b2GearJoint.prototype,b2Joint.prototype);Object.extend(b2GearJoint.prototype,{GetAnchor1:function(){var e=this.m_body1.m_R;return new b2Vec2(this.m_body1.m_position.x+(e.col1.x*this.m_localAnchor1.x+e.col2.x*this.m_localAnchor1.y),this.m_body1.m_position.y+(e.col1.y*this.m_localAnchor1.x+e.col2.y*this.m_localAnchor1.y))},GetAnchor2:function(){var e=this.m_body2.m_R;return new b2Vec2(this.m_body2.m_position.x+(e.col1.x*this.m_localAnchor2.x+e.col2.x*this.m_localAnchor2.y),this.m_body2.m_position.y+(e.col1.y*this.m_localAnchor2.x+e.col2.y*this.m_localAnchor2.y))},GetReactionForce:function(e){return new b2Vec2},GetReactionTorque:function(e){return 0},GetRatio:function(){return this.m_ratio},initialize:function(e){this.m_node1=new b2JointNode;this.m_node2=new b2JointNode;this.m_type=e.type;this.m_prev=null;this.m_next=null;this.m_body1=e.body1;this.m_body2=e.body2;this.m_collideConnected=e.collideConnected;this.m_islandFlag=false;this.m_userData=e.userData;this.m_groundAnchor1=new b2Vec2;this.m_groundAnchor2=new b2Vec2;this.m_localAnchor1=new b2Vec2;this.m_localAnchor2=new b2Vec2;this.m_J=new b2Jacobian;this.m_revolute1=null;this.m_prismatic1=null;this.m_revolute2=null;this.m_prismatic2=null;var t;var n;this.m_ground1=e.joint1.m_body1;this.m_body1=e.joint1.m_body2;if(e.joint1.m_type==b2Joint.e_revoluteJoint){this.m_revolute1=e.joint1;this.m_groundAnchor1.SetV(this.m_revolute1.m_localAnchor1);this.m_localAnchor1.SetV(this.m_revolute1.m_localAnchor2);t=this.m_revolute1.GetJointAngle()}else{this.m_prismatic1=e.joint1;this.m_groundAnchor1.SetV(this.m_prismatic1.m_localAnchor1);this.m_localAnchor1.SetV(this.m_prismatic1.m_localAnchor2);t=this.m_prismatic1.GetJointTranslation()}this.m_ground2=e.joint2.m_body1;this.m_body2=e.joint2.m_body2;if(e.joint2.m_type==b2Joint.e_revoluteJoint){this.m_revolute2=e.joint2;this.m_groundAnchor2.SetV(this.m_revolute2.m_localAnchor1);this.m_localAnchor2.SetV(this.m_revolute2.m_localAnchor2);n=this.m_revolute2.GetJointAngle()}else{this.m_prismatic2=e.joint2;this.m_groundAnchor2.SetV(this.m_prismatic2.m_localAnchor1);this.m_localAnchor2.SetV(this.m_prismatic2.m_localAnchor2);n=this.m_prismatic2.GetJointTranslation()}this.m_ratio=e.ratio;this.m_constant=t+this.m_ratio*n;this.m_impulse=0},PrepareVelocitySolver:function(){var e=this.m_ground1;var t=this.m_ground2;var n=this.m_body1;var r=this.m_body2;var i;var s;var o;var u;var a;var f;var l;var c=0;this.m_J.SetZero();if(this.m_revolute1){this.m_J.angular1=-1;c+=n.m_invI}else{a=e.m_R;f=this.m_prismatic1.m_localXAxis1;i=a.col1.x*f.x+a.col2.x*f.y;s=a.col1.y*f.x+a.col2.y*f.y;a=n.m_R;o=a.col1.x*this.m_localAnchor1.x+a.col2.x*this.m_localAnchor1.y;u=a.col1.y*this.m_localAnchor1.x+a.col2.y*this.m_localAnchor1.y;l=o*s-u*i;this.m_J.linear1.Set(-i,-s);this.m_J.angular1=-l;c+=n.m_invMass+n.m_invI*l*l}if(this.m_revolute2){this.m_J.angular2=-this.m_ratio;c+=this.m_ratio*this.m_ratio*r.m_invI}else{a=t.m_R;f=this.m_prismatic2.m_localXAxis1;i=a.col1.x*f.x+a.col2.x*f.y;s=a.col1.y*f.x+a.col2.y*f.y;a=r.m_R;o=a.col1.x*this.m_localAnchor2.x+a.col2.x*this.m_localAnchor2.y;u=a.col1.y*this.m_localAnchor2.x+a.col2.y*this.m_localAnchor2.y;l=o*s-u*i;this.m_J.linear2.Set(-this.m_ratio*i,-this.m_ratio*s);this.m_J.angular2=-this.m_ratio*l;c+=this.m_ratio*this.m_ratio*(r.m_invMass+r.m_invI*l*l)}this.m_mass=1/c;n.m_linearVelocity.x+=n.m_invMass*this.m_impulse*this.m_J.linear1.x;n.m_linearVelocity.y+=n.m_invMass*this.m_impulse*this.m_J.linear1.y;n.m_angularVelocity+=n.m_invI*this.m_impulse*this.m_J.angular1;r.m_linearVelocity.x+=r.m_invMass*this.m_impulse*this.m_J.linear2.x;r.m_linearVelocity.y+=r.m_invMass*this.m_impulse*this.m_J.linear2.y;r.m_angularVelocity+=r.m_invI*this.m_impulse*this.m_J.angular2},SolveVelocityConstraints:function(e){var t=this.m_body1;var n=this.m_body2;var r=this.m_J.Compute(t.m_linearVelocity,t.m_angularVelocity,n.m_linearVelocity,n.m_angularVelocity);var i=-this.m_mass*r;this.m_impulse+=i;t.m_linearVelocity.x+=t.m_invMass*i*this.m_J.linear1.x;t.m_linearVelocity.y+=t.m_invMass*i*this.m_J.linear1.y;t.m_angularVelocity+=t.m_invI*i*this.m_J.angular1;n.m_linearVelocity.x+=n.m_invMass*i*this.m_J.linear2.x;n.m_linearVelocity.y+=n.m_invMass*i*this.m_J.linear2.y;n.m_angularVelocity+=n.m_invI*i*this.m_J.angular2},SolvePositionConstraints:function(){var e=0;var t=this.m_body1;var n=this.m_body2;var r;var i;if(this.m_revolute1){r=this.m_revolute1.GetJointAngle()}else{r=this.m_prismatic1.GetJointTranslation()}if(this.m_revolute2){i=this.m_revolute2.GetJointAngle()}else{i=this.m_prismatic2.GetJointTranslation()}var s=this.m_constant-(r+this.m_ratio*i);var o=-this.m_mass*s;t.m_position.x+=t.m_invMass*o*this.m_J.linear1.x;t.m_position.y+=t.m_invMass*o*this.m_J.linear1.y;t.m_rotation+=t.m_invI*o*this.m_J.angular1;n.m_position.x+=n.m_invMass*o*this.m_J.linear2.x;n.m_position.y+=n.m_invMass*o*this.m_J.linear2.y;n.m_rotation+=n.m_invI*o*this.m_J.angular2;t.m_R.Set(t.m_rotation);n.m_R.Set(n.m_rotation);return e<b2Settings.b2_linearSlop},m_ground1:null,m_ground2:null,m_revolute1:null,m_prismatic1:null,m_revolute2:null,m_prismatic2:null,m_groundAnchor1:new b2Vec2,m_groundAnchor2:new b2Vec2,m_localAnchor1:new b2Vec2,m_localAnchor2:new b2Vec2,m_J:new b2Jacobian,m_constant:null,m_ratio:null,m_mass:null,m_impulse:null});var b2GearJointDef=Class.create();Object.extend(b2GearJointDef.prototype,b2JointDef.prototype);Object.extend(b2GearJointDef.prototype,{initialize:function(){this.type=b2Joint.e_gearJoint;this.joint1=null;this.joint2=null;this.ratio=1},joint1:null,joint2:null,ratio:null});var b2MouseJoint=Class.create();Object.extend(b2MouseJoint.prototype,b2Joint.prototype);Object.extend(b2MouseJoint.prototype,{GetAnchor1:function(){return this.m_target},GetAnchor2:function(){var e=b2Math.b2MulMV(this.m_body2.m_R,this.m_localAnchor);e.Add(this.m_body2.m_position);return e},GetReactionForce:function(e){var t=new b2Vec2;t.SetV(this.m_impulse);t.Multiply(e);return t},GetReactionTorque:function(e){return 0},SetTarget:function(e){this.m_body2.WakeUp();this.m_target=e},initialize:function(e){this.m_node1=new b2JointNode;this.m_node2=new b2JointNode;this.m_type=e.type;this.m_prev=null;this.m_next=null;this.m_body1=e.body1;this.m_body2=e.body2;this.m_collideConnected=e.collideConnected;this.m_islandFlag=false;this.m_userData=e.userData;this.K=new b2Mat22;this.K1=new b2Mat22;this.K2=new b2Mat22;this.m_localAnchor=new b2Vec2;this.m_target=new b2Vec2;this.m_impulse=new b2Vec2;this.m_ptpMass=new b2Mat22;this.m_C=new b2Vec2;this.m_target.SetV(e.target);var t=this.m_target.x-this.m_body2.m_position.x;var n=this.m_target.y-this.m_body2.m_position.y;this.m_localAnchor.x=t*this.m_body2.m_R.col1.x+n*this.m_body2.m_R.col1.y;this.m_localAnchor.y=t*this.m_body2.m_R.col2.x+n*this.m_body2.m_R.col2.y;this.m_maxForce=e.maxForce;this.m_impulse.SetZero();var r=this.m_body2.m_mass;var i=2*b2Settings.b2_pi*e.frequencyHz;var s=2*r*e.dampingRatio*i;var o=r*i*i;this.m_gamma=1/(s+e.timeStep*o);this.m_beta=e.timeStep*o/(s+e.timeStep*o)},K:new b2Mat22,K1:new b2Mat22,K2:new b2Mat22,PrepareVelocitySolver:function(){var e=this.m_body2;var t;t=e.m_R;var n=t.col1.x*this.m_localAnchor.x+t.col2.x*this.m_localAnchor.y;var r=t.col1.y*this.m_localAnchor.x+t.col2.y*this.m_localAnchor.y;var i=e.m_invMass;var s=e.m_invI;this.K1.col1.x=i;this.K1.col2.x=0;this.K1.col1.y=0;this.K1.col2.y=i;this.K2.col1.x=s*r*r;this.K2.col2.x=-s*n*r;this.K2.col1.y=-s*n*r;this.K2.col2.y=s*n*n;this.K.SetM(this.K1);this.K.AddM(this.K2);this.K.col1.x+=this.m_gamma;this.K.col2.y+=this.m_gamma;this.K.Invert(this.m_ptpMass);this.m_C.x=e.m_position.x+n-this.m_target.x;this.m_C.y=e.m_position.y+r-this.m_target.y;e.m_angularVelocity*=.98;var o=this.m_impulse.x;var u=this.m_impulse.y;e.m_linearVelocity.x+=i*o;e.m_linearVelocity.y+=i*u;e.m_angularVelocity+=s*(n*u-r*o)},SolveVelocityConstraints:function(e){var t=this.m_body2;var n;n=t.m_R;var r=n.col1.x*this.m_localAnchor.x+n.col2.x*this.m_localAnchor.y;var i=n.col1.y*this.m_localAnchor.x+n.col2.y*this.m_localAnchor.y;var s=t.m_linearVelocity.x+ -t.m_angularVelocity*i;var o=t.m_linearVelocity.y+t.m_angularVelocity*r;n=this.m_ptpMass;var u=s+this.m_beta*e.inv_dt*this.m_C.x+this.m_gamma*this.m_impulse.x;var a=o+this.m_beta*e.inv_dt*this.m_C.y+this.m_gamma*this.m_impulse.y;var f=-(n.col1.x*u+n.col2.x*a);var l=-(n.col1.y*u+n.col2.y*a);var c=this.m_impulse.x;var h=this.m_impulse.y;this.m_impulse.x+=f;this.m_impulse.y+=l;var p=this.m_impulse.Length();if(p>e.dt*this.m_maxForce){this.m_impulse.Multiply(e.dt*this.m_maxForce/p)}f=this.m_impulse.x-c;l=this.m_impulse.y-h;t.m_linearVelocity.x+=t.m_invMass*f;t.m_linearVelocity.y+=t.m_invMass*l;t.m_angularVelocity+=t.m_invI*(r*l-i*f)},SolvePositionConstraints:function(){return true},m_localAnchor:new b2Vec2,m_target:new b2Vec2,m_impulse:new b2Vec2,m_ptpMass:new b2Mat22,m_C:new b2Vec2,m_maxForce:null,m_beta:null,m_gamma:null});var b2MouseJointDef=Class.create();Object.extend(b2MouseJointDef.prototype,b2JointDef.prototype);Object.extend(b2MouseJointDef.prototype,{initialize:function(){this.type=b2Joint.e_unknownJoint;this.userData=null;this.body1=null;this.body2=null;this.collideConnected=false;this.target=new b2Vec2;this.type=b2Joint.e_mouseJoint;this.maxForce=0;this.frequencyHz=5;this.dampingRatio=.7;this.timeStep=1/60},target:new b2Vec2,maxForce:null,frequencyHz:null,dampingRatio:null,timeStep:null});var b2PrismaticJoint=Class.create();Object.extend(b2PrismaticJoint.prototype,b2Joint.prototype);Object.extend(b2PrismaticJoint.prototype,{GetAnchor1:function(){var e=this.m_body1;var t=new b2Vec2;t.SetV(this.m_localAnchor1);t.MulM(e.m_R);t.Add(e.m_position);return t},GetAnchor2:function(){var e=this.m_body2;var t=new b2Vec2;t.SetV(this.m_localAnchor2);t.MulM(e.m_R);t.Add(e.m_position);return t},GetJointTranslation:function(){var e=this.m_body1;var t=this.m_body2;var n;n=e.m_R;var r=n.col1.x*this.m_localAnchor1.x+n.col2.x*this.m_localAnchor1.y;var i=n.col1.y*this.m_localAnchor1.x+n.col2.y*this.m_localAnchor1.y;n=t.m_R;var s=n.col1.x*this.m_localAnchor2.x+n.col2.x*this.m_localAnchor2.y;var o=n.col1.y*this.m_localAnchor2.x+n.col2.y*this.m_localAnchor2.y;var u=e.m_position.x+r;var a=e.m_position.y+i;var f=t.m_position.x+s;var l=t.m_position.y+o;var c=f-u;var h=l-a;n=e.m_R;var p=n.col1.x*this.m_localXAxis1.x+n.col2.x*this.m_localXAxis1.y;var d=n.col1.y*this.m_localXAxis1.x+n.col2.y*this.m_localXAxis1.y;var v=p*c+d*h;return v},GetJointSpeed:function(){var e=this.m_body1;var t=this.m_body2;var n;n=e.m_R;var r=n.col1.x*this.m_localAnchor1.x+n.col2.x*this.m_localAnchor1.y;var i=n.col1.y*this.m_localAnchor1.x+n.col2.y*this.m_localAnchor1.y;n=t.m_R;var s=n.col1.x*this.m_localAnchor2.x+n.col2.x*this.m_localAnchor2.y;var o=n.col1.y*this.m_localAnchor2.x+n.col2.y*this.m_localAnchor2.y;var u=e.m_position.x+r;var a=e.m_position.y+i;var f=t.m_position.x+s;var l=t.m_position.y+o;var c=f-u;var h=l-a;n=e.m_R;var p=n.col1.x*this.m_localXAxis1.x+n.col2.x*this.m_localXAxis1.y;var d=n.col1.y*this.m_localXAxis1.x+n.col2.y*this.m_localXAxis1.y;var v=e.m_linearVelocity;var m=t.m_linearVelocity;var g=e.m_angularVelocity;var y=t.m_angularVelocity;var b=c*-g*d+h*g*p+(p*(m.x+ -y*o-v.x- -g*i)+d*(m.y+y*s-v.y-g*r));return b},GetMotorForce:function(e){return e*this.m_motorImpulse},SetMotorSpeed:function(e){this.m_motorSpeed=e},SetMotorForce:function(e){this.m_maxMotorForce=e},GetReactionForce:function(e){var t=e*this.m_limitImpulse;var n;n=this.m_body1.m_R;var r=t*(n.col1.x*this.m_localXAxis1.x+n.col2.x*this.m_localXAxis1.y);var i=t*(n.col1.y*this.m_localXAxis1.x+n.col2.y*this.m_localXAxis1.y);var s=t*(n.col1.x*this.m_localYAxis1.x+n.col2.x*this.m_localYAxis1.y);var o=t*(n.col1.y*this.m_localYAxis1.x+n.col2.y*this.m_localYAxis1.y);return new b2Vec2(r+s,i+o)},GetReactionTorque:function(e){return e*this.m_angularImpulse},initialize:function(e){this.m_node1=new b2JointNode;this.m_node2=new b2JointNode;this.m_type=e.type;this.m_prev=null;this.m_next=null;this.m_body1=e.body1;this.m_body2=e.body2;this.m_collideConnected=e.collideConnected;this.m_islandFlag=false;this.m_userData=e.userData;this.m_localAnchor1=new b2Vec2;this.m_localAnchor2=new b2Vec2;this.m_localXAxis1=new b2Vec2;this.m_localYAxis1=new b2Vec2;this.m_linearJacobian=new b2Jacobian;this.m_motorJacobian=new b2Jacobian;var t;var n;var r;t=this.m_body1.m_R;n=e.anchorPoint.x-this.m_body1.m_position.x;r=e.anchorPoint.y-this.m_body1.m_position.y;this.m_localAnchor1.Set(n*t.col1.x+r*t.col1.y,n*t.col2.x+r*t.col2.y);t=this.m_body2.m_R;n=e.anchorPoint.x-this.m_body2.m_position.x;r=e.anchorPoint.y-this.m_body2.m_position.y;this.m_localAnchor2.Set(n*t.col1.x+r*t.col1.y,n*t.col2.x+r*t.col2.y);t=this.m_body1.m_R;n=e.axis.x;r=e.axis.y;this.m_localXAxis1.Set(n*t.col1.x+r*t.col1.y,n*t.col2.x+r*t.col2.y);this.m_localYAxis1.x=-this.m_localXAxis1.y;this.m_localYAxis1.y=this.m_localXAxis1.x;this.m_initialAngle=this.m_body2.m_rotation-this.m_body1.m_rotation;this.m_linearJacobian.SetZero();this.m_linearMass=0;this.m_linearImpulse=0;this.m_angularMass=0;this.m_angularImpulse=0;this.m_motorJacobian.SetZero();this.m_motorMass=0;this.m_motorImpulse=0;this.m_limitImpulse=0;this.m_limitPositionImpulse=0;this.m_lowerTranslation=e.lowerTranslation;this.m_upperTranslation=e.upperTranslation;this.m_maxMotorForce=e.motorForce;this.m_motorSpeed=e.motorSpeed;this.m_enableLimit=e.enableLimit;this.m_enableMotor=e.enableMotor},PrepareVelocitySolver:function(){var e=this.m_body1;var t=this.m_body2;var n;n=e.m_R;var r=n.col1.x*this.m_localAnchor1.x+n.col2.x*this.m_localAnchor1.y;var i=n.col1.y*this.m_localAnchor1.x+n.col2.y*this.m_localAnchor1.y;n=t.m_R;var s=n.col1.x*this.m_localAnchor2.x+n.col2.x*this.m_localAnchor2.y;var o=n.col1.y*this.m_localAnchor2.x+n.col2.y*this.m_localAnchor2.y;var u=e.m_invMass;var a=t.m_invMass;var f=e.m_invI;var l=t.m_invI;n=e.m_R;var c=n.col1.x*this.m_localYAxis1.x+n.col2.x*this.m_localYAxis1.y;var h=n.col1.y*this.m_localYAxis1.x+n.col2.y*this.m_localYAxis1.y;var p=t.m_position.x+s-e.m_position.x;var d=t.m_position.y+o-e.m_position.y;this.m_linearJacobian.linear1.x=-c;this.m_linearJacobian.linear1.y=-h;this.m_linearJacobian.linear2.x=c;this.m_linearJacobian.linear2.y=h;this.m_linearJacobian.angular1=-(p*h-d*c);this.m_linearJacobian.angular2=s*h-o*c;this.m_linearMass=u+f*this.m_linearJacobian.angular1*this.m_linearJacobian.angular1+a+l*this.m_linearJacobian.angular2*this.m_linearJacobian.angular2;this.m_linearMass=1/this.m_linearMass;this.m_angularMass=1/(f+l);if(this.m_enableLimit||this.m_enableMotor){n=e.m_R;var v=n.col1.x*this.m_localXAxis1.x+n.col2.x*this.m_localXAxis1.y;var m=n.col1.y*this.m_localXAxis1.x+n.col2.y*this.m_localXAxis1.y;this.m_motorJacobian.linear1.x=-v;this.m_motorJacobian.linear1.y=-m;this.m_motorJacobian.linear2.x=v;this.m_motorJacobian.linear2.y=m;this.m_motorJacobian.angular1=-(p*m-d*v);this.m_motorJacobian.angular2=s*m-o*v;this.m_motorMass=u+f*this.m_motorJacobian.angular1*this.m_motorJacobian.angular1+a+l*this.m_motorJacobian.angular2*this.m_motorJacobian.angular2;this.m_motorMass=1/this.m_motorMass;if(this.m_enableLimit){var g=p-r;var y=d-i;var b=v*g+m*y;if(b2Math.b2Abs(this.m_upperTranslation-this.m_lowerTranslation)<2*b2Settings.b2_linearSlop){this.m_limitState=b2Joint.e_equalLimits}else if(b<=this.m_lowerTranslation){if(this.m_limitState!=b2Joint.e_atLowerLimit){this.m_limitImpulse=0}this.m_limitState=b2Joint.e_atLowerLimit}else if(b>=this.m_upperTranslation){if(this.m_limitState!=b2Joint.e_atUpperLimit){this.m_limitImpulse=0}this.m_limitState=b2Joint.e_atUpperLimit}else{this.m_limitState=b2Joint.e_inactiveLimit;this.m_limitImpulse=0}}}if(this.m_enableMotor==false){this.m_motorImpulse=0}if(this.m_enableLimit==false){this.m_limitImpulse=0}if(b2World.s_enableWarmStarting){var w=this.m_linearImpulse*this.m_linearJacobian.linear1.x+(this.m_motorImpulse+this.m_limitImpulse)*this.m_motorJacobian.linear1.x;var E=this.m_linearImpulse*this.m_linearJacobian.linear1.y+(this.m_motorImpulse+this.m_limitImpulse)*this.m_motorJacobian.linear1.y;var S=this.m_linearImpulse*this.m_linearJacobian.linear2.x+(this.m_motorImpulse+this.m_limitImpulse)*this.m_motorJacobian.linear2.x;var x=this.m_linearImpulse*this.m_linearJacobian.linear2.y+(this.m_motorImpulse+this.m_limitImpulse)*this.m_motorJacobian.linear2.y;var T=this.m_linearImpulse*this.m_linearJacobian.angular1-this.m_angularImpulse+(this.m_motorImpulse+this.m_limitImpulse)*this.m_motorJacobian.angular1;var N=this.m_linearImpulse*this.m_linearJacobian.angular2+this.m_angularImpulse+(this.m_motorImpulse+this.m_limitImpulse)*this.m_motorJacobian.angular2;e.m_linearVelocity.x+=u*w;e.m_linearVelocity.y+=u*E;e.m_angularVelocity+=f*T;t.m_linearVelocity.x+=a*S;t.m_linearVelocity.y+=a*x;t.m_angularVelocity+=l*N}else{this.m_linearImpulse=0;this.m_angularImpulse=0;this.m_limitImpulse=0;this.m_motorImpulse=0}this.m_limitPositionImpulse=0},SolveVelocityConstraints:function(e){var t=this.m_body1;var n=this.m_body2;var r=t.m_invMass;var i=n.m_invMass;var s=t.m_invI;var o=n.m_invI;var u;var a=this.m_linearJacobian.Compute(t.m_linearVelocity,t.m_angularVelocity,n.m_linearVelocity,n.m_angularVelocity);var f=-this.m_linearMass*a;this.m_linearImpulse+=f;t.m_linearVelocity.x+=r*f*this.m_linearJacobian.linear1.x;t.m_linearVelocity.y+=r*f*this.m_linearJacobian.linear1.y;t.m_angularVelocity+=s*f*this.m_linearJacobian.angular1;n.m_linearVelocity.x+=i*f*this.m_linearJacobian.linear2.x;n.m_linearVelocity.y+=i*f*this.m_linearJacobian.linear2.y;n.m_angularVelocity+=o*f*this.m_linearJacobian.angular2;var l=n.m_angularVelocity-t.m_angularVelocity;var c=-this.m_angularMass*l;this.m_angularImpulse+=c;t.m_angularVelocity-=s*c;n.m_angularVelocity+=o*c;if(this.m_enableMotor&&this.m_limitState!=b2Joint.e_equalLimits){var h=this.m_motorJacobian.Compute(t.m_linearVelocity,t.m_angularVelocity,n.m_linearVelocity,n.m_angularVelocity)-this.m_motorSpeed;var p=-this.m_motorMass*h;var d=this.m_motorImpulse;this.m_motorImpulse=b2Math.b2Clamp(this.m_motorImpulse+p,-e.dt*this.m_maxMotorForce,e.dt*this.m_maxMotorForce);p=this.m_motorImpulse-d;t.m_linearVelocity.x+=r*p*this.m_motorJacobian.linear1.x;t.m_linearVelocity.y+=r*p*this.m_motorJacobian.linear1.y;t.m_angularVelocity+=s*p*this.m_motorJacobian.angular1;n.m_linearVelocity.x+=i*p*this.m_motorJacobian.linear2.x;n.m_linearVelocity.y+=i*p*this.m_motorJacobian.linear2.y;n.m_angularVelocity+=o*p*this.m_motorJacobian.angular2}if(this.m_enableLimit&&this.m_limitState!=b2Joint.e_inactiveLimit){var v=this.m_motorJacobian.Compute(t.m_linearVelocity,t.m_angularVelocity,n.m_linearVelocity,n.m_angularVelocity);var m=-this.m_motorMass*v;if(this.m_limitState==b2Joint.e_equalLimits){this.m_limitImpulse+=m}else if(this.m_limitState==b2Joint.e_atLowerLimit){u=this.m_limitImpulse;this.m_limitImpulse=b2Math.b2Max(this.m_limitImpulse+m,0);m=this.m_limitImpulse-u}else if(this.m_limitState==b2Joint.e_atUpperLimit){u=this.m_limitImpulse;this.m_limitImpulse=b2Math.b2Min(this.m_limitImpulse+m,0);m=this.m_limitImpulse-u}t.m_linearVelocity.x+=r*m*this.m_motorJacobian.linear1.x;t.m_linearVelocity.y+=r*m*this.m_motorJacobian.linear1.y;t.m_angularVelocity+=s*m*this.m_motorJacobian.angular1;n.m_linearVelocity.x+=i*m*this.m_motorJacobian.linear2.x;n.m_linearVelocity.y+=i*m*this.m_motorJacobian.linear2.y;n.m_angularVelocity+=o*m*this.m_motorJacobian.angular2}},SolvePositionConstraints:function(){var e;var t;var n=this.m_body1;var r=this.m_body2;var i=n.m_invMass;var s=r.m_invMass;var o=n.m_invI;var u=r.m_invI;var a;a=n.m_R;var f=a.col1.x*this.m_localAnchor1.x+a.col2.x*this.m_localAnchor1.y;var l=a.col1.y*this.m_localAnchor1.x+a.col2.y*this.m_localAnchor1.y;a=r.m_R;var c=a.col1.x*this.m_localAnchor2.x+a.col2.x*this.m_localAnchor2.y;var h=a.col1.y*this.m_localAnchor2.x+a.col2.y*this.m_localAnchor2.y;var p=n.m_position.x+f;var d=n.m_position.y+l;var v=r.m_position.x+c;var m=r.m_position.y+h;var g=v-p;var y=m-d;a=n.m_R;var b=a.col1.x*this.m_localYAxis1.x+a.col2.x*this.m_localYAxis1.y;var w=a.col1.y*this.m_localYAxis1.x+a.col2.y*this.m_localYAxis1.y;var E=b*g+w*y;E=b2Math.b2Clamp(E,-b2Settings.b2_maxLinearCorrection,b2Settings.b2_maxLinearCorrection);var S=-this.m_linearMass*E;n.m_position.x+=i*S*this.m_linearJacobian.linear1.x;n.m_position.y+=i*S*this.m_linearJacobian.linear1.y;n.m_rotation+=o*S*this.m_linearJacobian.angular1;r.m_position.x+=s*S*this.m_linearJacobian.linear2.x;r.m_position.y+=s*S*this.m_linearJacobian.linear2.y;r.m_rotation+=u*S*this.m_linearJacobian.angular2;var x=b2Math.b2Abs(E);var T=r.m_rotation-n.m_rotation-this.m_initialAngle;T=b2Math.b2Clamp(T,-b2Settings.b2_maxAngularCorrection,b2Settings.b2_maxAngularCorrection);var N=-this.m_angularMass*T;n.m_rotation-=n.m_invI*N;n.m_R.Set(n.m_rotation);r.m_rotation+=r.m_invI*N;r.m_R.Set(r.m_rotation);var C=b2Math.b2Abs(T);if(this.m_enableLimit&&this.m_limitState!=b2Joint.e_inactiveLimit){a=n.m_R;f=a.col1.x*this.m_localAnchor1.x+a.col2.x*this.m_localAnchor1.y;l=a.col1.y*this.m_localAnchor1.x+a.col2.y*this.m_localAnchor1.y;a=r.m_R;c=a.col1.x*this.m_localAnchor2.x+a.col2.x*this.m_localAnchor2.y;h=a.col1.y*this.m_localAnchor2.x+a.col2.y*this.m_localAnchor2.y;p=n.m_position.x+f;d=n.m_position.y+l;v=r.m_position.x+c;m=r.m_position.y+h;g=v-p;y=m-d;a=n.m_R;var k=a.col1.x*this.m_localXAxis1.x+a.col2.x*this.m_localXAxis1.y;var L=a.col1.y*this.m_localXAxis1.x+a.col2.y*this.m_localXAxis1.y;var A=k*g+L*y;var O=0;if(this.m_limitState==b2Joint.e_equalLimits){e=b2Math.b2Clamp(A,-b2Settings.b2_maxLinearCorrection,b2Settings.b2_maxLinearCorrection);O=-this.m_motorMass*e;x=b2Math.b2Max(x,b2Math.b2Abs(T))}else if(this.m_limitState==b2Joint.e_atLowerLimit){e=A-this.m_lowerTranslation;x=b2Math.b2Max(x,-e);e=b2Math.b2Clamp(e+b2Settings.b2_linearSlop,-b2Settings.b2_maxLinearCorrection,0);O=-this.m_motorMass*e;t=this.m_limitPositionImpulse;this.m_limitPositionImpulse=b2Math.b2Max(this.m_limitPositionImpulse+O,0);O=this.m_limitPositionImpulse-t}else if(this.m_limitState==b2Joint.e_atUpperLimit){e=A-this.m_upperTranslation;x=b2Math.b2Max(x,e);e=b2Math.b2Clamp(e-b2Settings.b2_linearSlop,0,b2Settings.b2_maxLinearCorrection);O=-this.m_motorMass*e;t=this.m_limitPositionImpulse;this.m_limitPositionImpulse=b2Math.b2Min(this.m_limitPositionImpulse+O,0);O=this.m_limitPositionImpulse-t}n.m_position.x+=i*O*this.m_motorJacobian.linear1.x;n.m_position.y+=i*O*this.m_motorJacobian.linear1.y;n.m_rotation+=o*O*this.m_motorJacobian.angular1;n.m_R.Set(n.m_rotation);r.m_position.x+=s*O*this.m_motorJacobian.linear2.x;r.m_position.y+=s*O*this.m_motorJacobian.linear2.y;r.m_rotation+=u*O*this.m_motorJacobian.angular2;r.m_R.Set(r.m_rotation)}return x<=b2Settings.b2_linearSlop&&C<=b2Settings.b2_angularSlop},m_localAnchor1:new b2Vec2,m_localAnchor2:new b2Vec2,m_localXAxis1:new b2Vec2,m_localYAxis1:new b2Vec2,m_initialAngle:null,m_linearJacobian:new b2Jacobian,m_linearMass:null,m_linearImpulse:null,m_angularMass:null,m_angularImpulse:null,m_motorJacobian:new b2Jacobian,m_motorMass:null,m_motorImpulse:null,m_limitImpulse:null,m_limitPositionImpulse:null,m_lowerTranslation:null,m_upperTranslation:null,m_maxMotorForce:null,m_motorSpeed:null,m_enableLimit:null,m_enableMotor:null,m_limitState:0});var b2PrismaticJointDef=Class.create();Object.extend(b2PrismaticJointDef.prototype,b2JointDef.prototype);Object.extend(b2PrismaticJointDef.prototype,{initialize:function(){this.type=b2Joint.e_unknownJoint;this.userData=null;this.body1=null;this.body2=null;this.collideConnected=false;this.type=b2Joint.e_prismaticJoint;this.anchorPoint=new b2Vec2(0,0);this.axis=new b2Vec2(0,0);this.lowerTranslation=0;this.upperTranslation=0;this.motorForce=0;this.motorSpeed=0;this.enableLimit=false;this.enableMotor=false},anchorPoint:null,axis:null,lowerTranslation:null,upperTranslation:null,motorForce:null,motorSpeed:null,enableLimit:null,enableMotor:null});var b2PulleyJoint=Class.create();Object.extend(b2PulleyJoint.prototype,b2Joint.prototype);Object.extend(b2PulleyJoint.prototype,{GetAnchor1:function(){var e=this.m_body1.m_R;return new b2Vec2(this.m_body1.m_position.x+(e.col1.x*this.m_localAnchor1.x+e.col2.x*this.m_localAnchor1.y),this.m_body1.m_position.y+(e.col1.y*this.m_localAnchor1.x+e.col2.y*this.m_localAnchor1.y))},GetAnchor2:function(){var e=this.m_body2.m_R;return new b2Vec2(this.m_body2.m_position.x+(e.col1.x*this.m_localAnchor2.x+e.col2.x*this.m_localAnchor2.y),this.m_body2.m_position.y+(e.col1.y*this.m_localAnchor2.x+e.col2.y*this.m_localAnchor2.y))},GetGroundPoint1:function(){return new b2Vec2(this.m_ground.m_position.x+this.m_groundAnchor1.x,this.m_ground.m_position.y+this.m_groundAnchor1.y)},GetGroundPoint2:function(){return new b2Vec2(this.m_ground.m_position.x+this.m_groundAnchor2.x,this.m_ground.m_position.y+this.m_groundAnchor2.y)},GetReactionForce:function(e){return new b2Vec2},GetReactionTorque:function(e){return 0},GetLength1:function(){var e;e=this.m_body1.m_R;var t=this.m_body1.m_position.x+(e.col1.x*this.m_localAnchor1.x+e.col2.x*this.m_localAnchor1.y);var n=this.m_body1.m_position.y+(e.col1.y*this.m_localAnchor1.x+e.col2.y*this.m_localAnchor1.y);var r=t-(this.m_ground.m_position.x+this.m_groundAnchor1.x);var i=n-(this.m_ground.m_position.y+this.m_groundAnchor1.y);return Math.sqrt(r*r+i*i)},GetLength2:function(){var e;e=this.m_body2.m_R;var t=this.m_body2.m_position.x+(e.col1.x*this.m_localAnchor2.x+e.col2.x*this.m_localAnchor2.y);var n=this.m_body2.m_position.y+(e.col1.y*this.m_localAnchor2.x+e.col2.y*this.m_localAnchor2.y);var r=t-(this.m_ground.m_position.x+this.m_groundAnchor2.x);var i=n-(this.m_ground.m_position.y+this.m_groundAnchor2.y);return Math.sqrt(r*r+i*i)},GetRatio:function(){return this.m_ratio},initialize:function(e){this.m_node1=new b2JointNode;this.m_node2=new b2JointNode;this.m_type=e.type;this.m_prev=null;this.m_next=null;this.m_body1=e.body1;this.m_body2=e.body2;this.m_collideConnected=e.collideConnected;this.m_islandFlag=false;this.m_userData=e.userData;this.m_groundAnchor1=new b2Vec2;this.m_groundAnchor2=new b2Vec2;this.m_localAnchor1=new b2Vec2;this.m_localAnchor2=new b2Vec2;this.m_u1=new b2Vec2;this.m_u2=new b2Vec2;var t;var n;var r;this.m_ground=this.m_body1.m_world.m_groundBody;this.m_groundAnchor1.x=e.groundPoint1.x-this.m_ground.m_position.x;this.m_groundAnchor1.y=e.groundPoint1.y-this.m_ground.m_position.y;this.m_groundAnchor2.x=e.groundPoint2.x-this.m_ground.m_position.x;this.m_groundAnchor2.y=e.groundPoint2.y-this.m_ground.m_position.y;t=this.m_body1.m_R;n=e.anchorPoint1.x-this.m_body1.m_position.x;r=e.anchorPoint1.y-this.m_body1.m_position.y;this.m_localAnchor1.x=n*t.col1.x+r*t.col1.y;this.m_localAnchor1.y=n*t.col2.x+r*t.col2.y;t=this.m_body2.m_R;n=e.anchorPoint2.x-this.m_body2.m_position.x;r=e.anchorPoint2.y-this.m_body2.m_position.y;this.m_localAnchor2.x=n*t.col1.x+r*t.col1.y;this.m_localAnchor2.y=n*t.col2.x+r*t.col2.y;this.m_ratio=e.ratio;n=e.groundPoint1.x-e.anchorPoint1.x;r=e.groundPoint1.y-e.anchorPoint1.y;var i=Math.sqrt(n*n+r*r);n=e.groundPoint2.x-e.anchorPoint2.x;r=e.groundPoint2.y-e.anchorPoint2.y;var s=Math.sqrt(n*n+r*r);var o=b2Math.b2Max(.5*b2PulleyJoint.b2_minPulleyLength,i);var u=b2Math.b2Max(.5*b2PulleyJoint.b2_minPulleyLength,s);this.m_constant=o+this.m_ratio*u;this.m_maxLength1=b2Math.b2Clamp(e.maxLength1,o,this.m_constant-this.m_ratio*b2PulleyJoint.b2_minPulleyLength);this.m_maxLength2=b2Math.b2Clamp(e.maxLength2,u,(this.m_constant-b2PulleyJoint.b2_minPulleyLength)/this.m_ratio);this.m_pulleyImpulse=0;this.m_limitImpulse1=0;this.m_limitImpulse2=0},PrepareVelocitySolver:function(){var e=this.m_body1;var t=this.m_body2;var n;n=e.m_R;var r=n.col1.x*this.m_localAnchor1.x+n.col2.x*this.m_localAnchor1.y;var i=n.col1.y*this.m_localAnchor1.x+n.col2.y*this.m_localAnchor1.y;n=t.m_R;var s=n.col1.x*this.m_localAnchor2.x+n.col2.x*this.m_localAnchor2.y;var o=n.col1.y*this.m_localAnchor2.x+n.col2.y*this.m_localAnchor2.y;var u=e.m_position.x+r;var a=e.m_position.y+i;var f=t.m_position.x+s;var l=t.m_position.y+o;var c=this.m_ground.m_position.x+this.m_groundAnchor1.x;var h=this.m_ground.m_position.y+this.m_groundAnchor1.y;var p=this.m_ground.m_position.x+this.m_groundAnchor2.x;var d=this.m_ground.m_position.y+this.m_groundAnchor2.y;this.m_u1.Set(u-c,a-h);this.m_u2.Set(f-p,l-d);var v=this.m_u1.Length();var m=this.m_u2.Length();if(v>b2Settings.b2_linearSlop){this.m_u1.Multiply(1/v)}else{this.m_u1.SetZero()}if(m>b2Settings.b2_linearSlop){this.m_u2.Multiply(1/m)}else{this.m_u2.SetZero()}if(v<this.m_maxLength1){this.m_limitState1=b2Joint.e_inactiveLimit;this.m_limitImpulse1=0}else{this.m_limitState1=b2Joint.e_atUpperLimit;this.m_limitPositionImpulse1=0}if(m<this.m_maxLength2){this.m_limitState2=b2Joint.e_inactiveLimit;this.m_limitImpulse2=0}else{this.m_limitState2=b2Joint.e_atUpperLimit;this.m_limitPositionImpulse2=0}var g=r*this.m_u1.y-i*this.m_u1.x;var y=s*this.m_u2.y-o*this.m_u2.x;this.m_limitMass1=e.m_invMass+e.m_invI*g*g;this.m_limitMass2=t.m_invMass+t.m_invI*y*y;this.m_pulleyMass=this.m_limitMass1+this.m_ratio*this.m_ratio*this.m_limitMass2;this.m_limitMass1=1/this.m_limitMass1;this.m_limitMass2=1/this.m_limitMass2;this.m_pulleyMass=1/this.m_pulleyMass;var b=(-this.m_pulleyImpulse-this.m_limitImpulse1)*this.m_u1.x;var w=(-this.m_pulleyImpulse-this.m_limitImpulse1)*this.m_u1.y;var E=(-this.m_ratio*this.m_pulleyImpulse-this.m_limitImpulse2)*this.m_u2.x;var S=(-this.m_ratio*this.m_pulleyImpulse-this.m_limitImpulse2)*this.m_u2.y;e.m_linearVelocity.x+=e.m_invMass*b;e.m_linearVelocity.y+=e.m_invMass*w;e.m_angularVelocity+=e.m_invI*(r*w-i*b);t.m_linearVelocity.x+=t.m_invMass*E;t.m_linearVelocity.y+=t.m_invMass*S;t.m_angularVelocity+=t.m_invI*(s*S-o*E)},SolveVelocityConstraints:function(e){var t=this.m_body1;var n=this.m_body2;var r;r=t.m_R;var i=r.col1.x*this.m_localAnchor1.x+r.col2.x*this.m_localAnchor1.y;var s=r.col1.y*this.m_localAnchor1.x+r.col2.y*this.m_localAnchor1.y;r=n.m_R;var o=r.col1.x*this.m_localAnchor2.x+r.col2.x*this.m_localAnchor2.y;var u=r.col1.y*this.m_localAnchor2.x+r.col2.y*this.m_localAnchor2.y;var a;var f;var l;var c;var h;var p;var d;var v;var m;var g;var y;a=t.m_linearVelocity.x+ -t.m_angularVelocity*s;f=t.m_linearVelocity.y+t.m_angularVelocity*i;l=n.m_linearVelocity.x+ -n.m_angularVelocity*u;c=n.m_linearVelocity.y+n.m_angularVelocity*o;m=-(this.m_u1.x*a+this.m_u1.y*f)-this.m_ratio*(this.m_u2.x*l+this.m_u2.y*c);g=-this.m_pulleyMass*m;this.m_pulleyImpulse+=g;h=-g*this.m_u1.x;p=-g*this.m_u1.y;d=-this.m_ratio*g*this.m_u2.x;v=-this.m_ratio*g*this.m_u2.y;t.m_linearVelocity.x+=t.m_invMass*h;t.m_linearVelocity.y+=t.m_invMass*p;t.m_angularVelocity+=t.m_invI*(i*p-s*h);n.m_linearVelocity.x+=n.m_invMass*d;n.m_linearVelocity.y+=n.m_invMass*v;n.m_angularVelocity+=n.m_invI*(o*v-u*d);if(this.m_limitState1==b2Joint.e_atUpperLimit){a=t.m_linearVelocity.x+ -t.m_angularVelocity*s;f=t.m_linearVelocity.y+t.m_angularVelocity*i;m=-(this.m_u1.x*a+this.m_u1.y*f);g=-this.m_limitMass1*m;y=this.m_limitImpulse1;this.m_limitImpulse1=b2Math.b2Max(0,this.m_limitImpulse1+g);g=this.m_limitImpulse1-y;h=-g*this.m_u1.x;p=-g*this.m_u1.y;t.m_linearVelocity.x+=t.m_invMass*h;t.m_linearVelocity.y+=t.m_invMass*p;t.m_angularVelocity+=t.m_invI*(i*p-s*h)}if(this.m_limitState2==b2Joint.e_atUpperLimit){l=n.m_linearVelocity.x+ -n.m_angularVelocity*u;c=n.m_linearVelocity.y+n.m_angularVelocity*o;m=-(this.m_u2.x*l+this.m_u2.y*c);g=-this.m_limitMass2*m;y=this.m_limitImpulse2;this.m_limitImpulse2=b2Math.b2Max(0,this.m_limitImpulse2+g);g=this.m_limitImpulse2-y;d=-g*this.m_u2.x;v=-g*this.m_u2.y;n.m_linearVelocity.x+=n.m_invMass*d;n.m_linearVelocity.y+=n.m_invMass*v;n.m_angularVelocity+=n.m_invI*(o*v-u*d)}},SolvePositionConstraints:function(){var e=this.m_body1;var t=this.m_body2;var n;var r=this.m_ground.m_position.x+this.m_groundAnchor1.x;var i=this.m_ground.m_position.y+this.m_groundAnchor1.y;var s=this.m_ground.m_position.x+this.m_groundAnchor2.x;var o=this.m_ground.m_position.y+this.m_groundAnchor2.y;var u;var a;var f;var l;var c;var h;var p;var d;var v;var m;var g;var y;var b;var w=0;{n=e.m_R;u=n.col1.x*this.m_localAnchor1.x+n.col2.x*this.m_localAnchor1.y;a=n.col1.y*this.m_localAnchor1.x+n.col2.y*this.m_localAnchor1.y;n=t.m_R;f=n.col1.x*this.m_localAnchor2.x+n.col2.x*this.m_localAnchor2.y;l=n.col1.y*this.m_localAnchor2.x+n.col2.y*this.m_localAnchor2.y;c=e.m_position.x+u;h=e.m_position.y+a;p=t.m_position.x+f;d=t.m_position.y+l;this.m_u1.Set(c-r,h-i);this.m_u2.Set(p-s,d-o);v=this.m_u1.Length();m=this.m_u2.Length();if(v>b2Settings.b2_linearSlop){this.m_u1.Multiply(1/v)}else{this.m_u1.SetZero()}if(m>b2Settings.b2_linearSlop){this.m_u2.Multiply(1/m)}else{this.m_u2.SetZero()}g=this.m_constant-v-this.m_ratio*m;w=b2Math.b2Max(w,Math.abs(g));g=b2Math.b2Clamp(g,-b2Settings.b2_maxLinearCorrection,b2Settings.b2_maxLinearCorrection);y=-this.m_pulleyMass*g;c=-y*this.m_u1.x;h=-y*this.m_u1.y;p=-this.m_ratio*y*this.m_u2.x;d=-this.m_ratio*y*this.m_u2.y;e.m_position.x+=e.m_invMass*c;e.m_position.y+=e.m_invMass*h;e.m_rotation+=e.m_invI*(u*h-a*c);t.m_position.x+=t.m_invMass*p;t.m_position.y+=t.m_invMass*d;t.m_rotation+=t.m_invI*(f*d-l*p);e.m_R.Set(e.m_rotation);t.m_R.Set(t.m_rotation)}if(this.m_limitState1==b2Joint.e_atUpperLimit){n=e.m_R;u=n.col1.x*this.m_localAnchor1.x+n.col2.x*this.m_localAnchor1.y;a=n.col1.y*this.m_localAnchor1.x+n.col2.y*this.m_localAnchor1.y;c=e.m_position.x+u;h=e.m_position.y+a;this.m_u1.Set(c-r,h-i);v=this.m_u1.Length();if(v>b2Settings.b2_linearSlop){this.m_u1.x*=1/v;this.m_u1.y*=1/v}else{this.m_u1.SetZero()}g=this.m_maxLength1-v;w=b2Math.b2Max(w,-g);g=b2Math.b2Clamp(g+b2Settings.b2_linearSlop,-b2Settings.b2_maxLinearCorrection,0);y=-this.m_limitMass1*g;b=this.m_limitPositionImpulse1;this.m_limitPositionImpulse1=b2Math.b2Max(0,this.m_limitPositionImpulse1+y);y=this.m_limitPositionImpulse1-b;c=-y*this.m_u1.x;h=-y*this.m_u1.y;e.m_position.x+=e.m_invMass*c;e.m_position.y+=e.m_invMass*h;e.m_rotation+=e.m_invI*(u*h-a*c);e.m_R.Set(e.m_rotation)}if(this.m_limitState2==b2Joint.e_atUpperLimit){n=t.m_R;f=n.col1.x*this.m_localAnchor2.x+n.col2.x*this.m_localAnchor2.y;l=n.col1.y*this.m_localAnchor2.x+n.col2.y*this.m_localAnchor2.y;p=t.m_position.x+f;d=t.m_position.y+l;this.m_u2.Set(p-s,d-o);m=this.m_u2.Length();if(m>b2Settings.b2_linearSlop){this.m_u2.x*=1/m;this.m_u2.y*=1/m}else{this.m_u2.SetZero()}g=this.m_maxLength2-m;w=b2Math.b2Max(w,-g);g=b2Math.b2Clamp(g+b2Settings.b2_linearSlop,-b2Settings.b2_maxLinearCorrection,0);y=-this.m_limitMass2*g;b=this.m_limitPositionImpulse2;this.m_limitPositionImpulse2=b2Math.b2Max(0,this.m_limitPositionImpulse2+y);y=this.m_limitPositionImpulse2-b;p=-y*this.m_u2.x;d=-y*this.m_u2.y;t.m_position.x+=t.m_invMass*p;t.m_position.y+=t.m_invMass*d;t.m_rotation+=t.m_invI*(f*d-l*p);t.m_R.Set(t.m_rotation)}return w<b2Settings.b2_linearSlop},m_ground:null,m_groundAnchor1:new b2Vec2,m_groundAnchor2:new b2Vec2,m_localAnchor1:new b2Vec2,m_localAnchor2:new b2Vec2,m_u1:new b2Vec2,m_u2:new b2Vec2,m_constant:null,m_ratio:null,m_maxLength1:null,m_maxLength2:null,m_pulleyMass:null,m_limitMass1:null,m_limitMass2:null,m_pulleyImpulse:null,m_limitImpulse1:null,m_limitImpulse2:null,m_limitPositionImpulse1:null,m_limitPositionImpulse2:null,m_limitState1:0,m_limitState2:0});b2PulleyJoint.b2_minPulleyLength=b2Settings.b2_lengthUnitsPerMeter;var b2PulleyJointDef=Class.create();Object.extend(b2PulleyJointDef.prototype,b2JointDef.prototype);Object.extend(b2PulleyJointDef.prototype,{initialize:function(){this.type=b2Joint.e_unknownJoint;this.userData=null;this.body1=null;this.body2=null;this.collideConnected=false;this.groundPoint1=new b2Vec2;this.groundPoint2=new b2Vec2;this.anchorPoint1=new b2Vec2;this.anchorPoint2=new b2Vec2;this.type=b2Joint.e_pulleyJoint;this.groundPoint1.Set(-1,1);this.groundPoint2.Set(1,1);this.anchorPoint1.Set(-1,0);this.anchorPoint2.Set(1,0);this.maxLength1=.5*b2PulleyJoint.b2_minPulleyLength;this.maxLength2=.5*b2PulleyJoint.b2_minPulleyLength;this.ratio=1;this.collideConnected=true},groundPoint1:new b2Vec2,groundPoint2:new b2Vec2,anchorPoint1:new b2Vec2,anchorPoint2:new b2Vec2,maxLength1:null,maxLength2:null,ratio:null});var b2RevoluteJoint=Class.create();Object.extend(b2RevoluteJoint.prototype,b2Joint.prototype);Object.extend(b2RevoluteJoint.prototype,{GetAnchor1:function(){var e=this.m_body1.m_R;return new b2Vec2(this.m_body1.m_position.x+(e.col1.x*this.m_localAnchor1.x+e.col2.x*this.m_localAnchor1.y),this.m_body1.m_position.y+(e.col1.y*this.m_localAnchor1.x+e.col2.y*this.m_localAnchor1.y))},GetAnchor2:function(){var e=this.m_body2.m_R;return new b2Vec2(this.m_body2.m_position.x+(e.col1.x*this.m_localAnchor2.x+e.col2.x*this.m_localAnchor2.y),this.m_body2.m_position.y+(e.col1.y*this.m_localAnchor2.x+e.col2.y*this.m_localAnchor2.y))},GetJointAngle:function(){return this.m_body2.m_rotation-this.m_body1.m_rotation},GetJointSpeed:function(){return this.m_body2.m_angularVelocity-this.m_body1.m_angularVelocity},GetMotorTorque:function(e){return e*this.m_motorImpulse},SetMotorSpeed:function(e){this.m_motorSpeed=e},SetMotorTorque:function(e){this.m_maxMotorTorque=e},GetReactionForce:function(e){var t=this.m_ptpImpulse.Copy();t.Multiply(e);return t},GetReactionTorque:function(e){return e*this.m_limitImpulse},initialize:function(e){this.m_node1=new b2JointNode;this.m_node2=new b2JointNode;this.m_type=e.type;this.m_prev=null;this.m_next=null;this.m_body1=e.body1;this.m_body2=e.body2;this.m_collideConnected=e.collideConnected;this.m_islandFlag=false;this.m_userData=e.userData;this.K=new b2Mat22;this.K1=new b2Mat22;this.K2=new b2Mat22;this.K3=new b2Mat22;this.m_localAnchor1=new b2Vec2;this.m_localAnchor2=new b2Vec2;this.m_ptpImpulse=new b2Vec2;this.m_ptpMass=new b2Mat22;var t;var n;var r;t=this.m_body1.m_R;n=e.anchorPoint.x-this.m_body1.m_position.x;r=e.anchorPoint.y-this.m_body1.m_position.y;this.m_localAnchor1.x=n*t.col1.x+r*t.col1.y;this.m_localAnchor1.y=n*t.col2.x+r*t.col2.y;t=this.m_body2.m_R;n=e.anchorPoint.x-this.m_body2.m_position.x;r=e.anchorPoint.y-this.m_body2.m_position.y;this.m_localAnchor2.x=n*t.col1.x+r*t.col1.y;this.m_localAnchor2.y=n*t.col2.x+r*t.col2.y;this.m_intialAngle=this.m_body2.m_rotation-this.m_body1.m_rotation;this.m_ptpImpulse.Set(0,0);this.m_motorImpulse=0;this.m_limitImpulse=0;this.m_limitPositionImpulse=0;this.m_lowerAngle=e.lowerAngle;this.m_upperAngle=e.upperAngle;this.m_maxMotorTorque=e.motorTorque;this.m_motorSpeed=e.motorSpeed;this.m_enableLimit=e.enableLimit;this.m_enableMotor=e.enableMotor},K:new b2Mat22,K1:new b2Mat22,K2:new b2Mat22,K3:new b2Mat22,PrepareVelocitySolver:function(){var e=this.m_body1;var t=this.m_body2;var n;n=e.m_R;var r=n.col1.x*this.m_localAnchor1.x+n.col2.x*this.m_localAnchor1.y;var i=n.col1.y*this.m_localAnchor1.x+n.col2.y*this.m_localAnchor1.y;n=t.m_R;var s=n.col1.x*this.m_localAnchor2.x+n.col2.x*this.m_localAnchor2.y;var o=n.col1.y*this.m_localAnchor2.x+n.col2.y*this.m_localAnchor2.y;var u=e.m_invMass;var a=t.m_invMass;var f=e.m_invI;var l=t.m_invI;this.K1.col1.x=u+a;this.K1.col2.x=0;this.K1.col1.y=0;this.K1.col2.y=u+a;this.K2.col1.x=f*i*i;this.K2.col2.x=-f*r*i;this.K2.col1.y=-f*r*i;this.K2.col2.y=f*r*r;this.K3.col1.x=l*o*o;this.K3.col2.x=-l*s*o;this.K3.col1.y=-l*s*o;this.K3.col2.y=l*s*s;this.K.SetM(this.K1);this.K.AddM(this.K2);this.K.AddM(this.K3);this.K.Invert(this.m_ptpMass);this.m_motorMass=1/(f+l);if(this.m_enableMotor==false){this.m_motorImpulse=0}if(this.m_enableLimit){var c=t.m_rotation-e.m_rotation-this.m_intialAngle;if(b2Math.b2Abs(this.m_upperAngle-this.m_lowerAngle)<2*b2Settings.b2_angularSlop){this.m_limitState=b2Joint.e_equalLimits}else if(c<=this.m_lowerAngle){if(this.m_limitState!=b2Joint.e_atLowerLimit){this.m_limitImpulse=0}this.m_limitState=b2Joint.e_atLowerLimit}else if(c>=this.m_upperAngle){if(this.m_limitState!=b2Joint.e_atUpperLimit){this.m_limitImpulse=0}this.m_limitState=b2Joint.e_atUpperLimit}else{this.m_limitState=b2Joint.e_inactiveLimit;this.m_limitImpulse=0}}else{this.m_limitImpulse=0}if(b2World.s_enableWarmStarting){e.m_linearVelocity.x-=u*this.m_ptpImpulse.x;e.m_linearVelocity.y-=u*this.m_ptpImpulse.y;e.m_angularVelocity-=f*(r*this.m_ptpImpulse.y-i*this.m_ptpImpulse.x+this.m_motorImpulse+this.m_limitImpulse);t.m_linearVelocity.x+=a*this.m_ptpImpulse.x;t.m_linearVelocity.y+=a*this.m_ptpImpulse.y;t.m_angularVelocity+=l*(s*this.m_ptpImpulse.y-o*this.m_ptpImpulse.x+this.m_motorImpulse+this.m_limitImpulse)}else{this.m_ptpImpulse.SetZero();this.m_motorImpulse=0;this.m_limitImpulse=0}this.m_limitPositionImpulse=0},SolveVelocityConstraints:function(e){var t=this.m_body1;var n=this.m_body2;var r;r=t.m_R;var i=r.col1.x*this.m_localAnchor1.x+r.col2.x*this.m_localAnchor1.y;var s=r.col1.y*this.m_localAnchor1.x+r.col2.y*this.m_localAnchor1.y;r=n.m_R;var o=r.col1.x*this.m_localAnchor2.x+r.col2.x*this.m_localAnchor2.y;var u=r.col1.y*this.m_localAnchor2.x+r.col2.y*this.m_localAnchor2.y;var a;var f=n.m_linearVelocity.x+ -n.m_angularVelocity*u-t.m_linearVelocity.x- -t.m_angularVelocity*s;var l=n.m_linearVelocity.y+n.m_angularVelocity*o-t.m_linearVelocity.y-t.m_angularVelocity*i;var c=-(this.m_ptpMass.col1.x*f+this.m_ptpMass.col2.x*l);var h=-(this.m_ptpMass.col1.y*f+this.m_ptpMass.col2.y*l);this.m_ptpImpulse.x+=c;this.m_ptpImpulse.y+=h;t.m_linearVelocity.x-=t.m_invMass*c;t.m_linearVelocity.y-=t.m_invMass*h;t.m_angularVelocity-=t.m_invI*(i*h-s*c);n.m_linearVelocity.x+=n.m_invMass*c;n.m_linearVelocity.y+=n.m_invMass*h;n.m_angularVelocity+=n.m_invI*(o*h-u*c);if(this.m_enableMotor&&this.m_limitState!=b2Joint.e_equalLimits){var p=n.m_angularVelocity-t.m_angularVelocity-this.m_motorSpeed;var d=-this.m_motorMass*p;var v=this.m_motorImpulse;this.m_motorImpulse=b2Math.b2Clamp(this.m_motorImpulse+d,-e.dt*this.m_maxMotorTorque,e.dt*this.m_maxMotorTorque);d=this.m_motorImpulse-v;t.m_angularVelocity-=t.m_invI*d;n.m_angularVelocity+=n.m_invI*d}if(this.m_enableLimit&&this.m_limitState!=b2Joint.e_inactiveLimit){var m=n.m_angularVelocity-t.m_angularVelocity;var g=-this.m_motorMass*m;if(this.m_limitState==b2Joint.e_equalLimits){this.m_limitImpulse+=g}else if(this.m_limitState==b2Joint.e_atLowerLimit){a=this.m_limitImpulse;this.m_limitImpulse=b2Math.b2Max(this.m_limitImpulse+g,0);g=this.m_limitImpulse-a}else if(this.m_limitState==b2Joint.e_atUpperLimit){a=this.m_limitImpulse;this.m_limitImpulse=b2Math.b2Min(this.m_limitImpulse+g,0);g=this.m_limitImpulse-a}t.m_angularVelocity-=t.m_invI*g;n.m_angularVelocity+=n.m_invI*g}},SolvePositionConstraints:function(){var e;var t;var n=this.m_body1;var r=this.m_body2;var i=0;var s;s=n.m_R;var o=s.col1.x*this.m_localAnchor1.x+s.col2.x*this.m_localAnchor1.y;var u=s.col1.y*this.m_localAnchor1.x+s.col2.y*this.m_localAnchor1.y;s=r.m_R;var a=s.col1.x*this.m_localAnchor2.x+s.col2.x*this.m_localAnchor2.y;var f=s.col1.y*this.m_localAnchor2.x+s.col2.y*this.m_localAnchor2.y;var l=n.m_position.x+o;var c=n.m_position.y+u;var h=r.m_position.x+a;var p=r.m_position.y+f;var d=h-l;var v=p-c;i=Math.sqrt(d*d+v*v);var m=n.m_invMass;var g=r.m_invMass;var y=n.m_invI;var b=r.m_invI;this.K1.col1.x=m+g;this.K1.col2.x=0;this.K1.col1.y=0;this.K1.col2.y=m+g;this.K2.col1.x=y*u*u;this.K2.col2.x=-y*o*u;this.K2.col1.y=-y*o*u;this.K2.col2.y=y*o*o;this.K3.col1.x=b*f*f;this.K3.col2.x=-b*a*f;this.K3.col1.y=-b*a*f;this.K3.col2.y=b*a*a;this.K.SetM(this.K1);this.K.AddM(this.K2);this.K.AddM(this.K3);this.K.Solve(b2RevoluteJoint.tImpulse,-d,-v);var w=b2RevoluteJoint.tImpulse.x;var E=b2RevoluteJoint.tImpulse.y;n.m_position.x-=n.m_invMass*w;n.m_position.y-=n.m_invMass*E;n.m_rotation-=n.m_invI*(o*E-u*w);n.m_R.Set(n.m_rotation);r.m_position.x+=r.m_invMass*w;r.m_position.y+=r.m_invMass*E;r.m_rotation+=r.m_invI*(a*E-f*w);r.m_R.Set(r.m_rotation);var S=0;if(this.m_enableLimit&&this.m_limitState!=b2Joint.e_inactiveLimit){var x=r.m_rotation-n.m_rotation-this.m_intialAngle;var T=0;if(this.m_limitState==b2Joint.e_equalLimits){t=b2Math.b2Clamp(x,-b2Settings.b2_maxAngularCorrection,b2Settings.b2_maxAngularCorrection);T=-this.m_motorMass*t;S=b2Math.b2Abs(t)}else if(this.m_limitState==b2Joint.e_atLowerLimit){t=x-this.m_lowerAngle;S=b2Math.b2Max(0,-t);t=b2Math.b2Clamp(t+b2Settings.b2_angularSlop,-b2Settings.b2_maxAngularCorrection,0);T=-this.m_motorMass*t;e=this.m_limitPositionImpulse;this.m_limitPositionImpulse=b2Math.b2Max(this.m_limitPositionImpulse+T,0);T=this.m_limitPositionImpulse-e}else if(this.m_limitState==b2Joint.e_atUpperLimit){t=x-this.m_upperAngle;S=b2Math.b2Max(0,t);t=b2Math.b2Clamp(t-b2Settings.b2_angularSlop,0,b2Settings.b2_maxAngularCorrection);T=-this.m_motorMass*t;e=this.m_limitPositionImpulse;this.m_limitPositionImpulse=b2Math.b2Min(this.m_limitPositionImpulse+T,0);T=this.m_limitPositionImpulse-e}n.m_rotation-=n.m_invI*T;n.m_R.Set(n.m_rotation);r.m_rotation+=r.m_invI*T;r.m_R.Set(r.m_rotation)}return i<=b2Settings.b2_linearSlop&&S<=b2Settings.b2_angularSlop},m_localAnchor1:new b2Vec2,m_localAnchor2:new b2Vec2,m_ptpImpulse:new b2Vec2,m_motorImpulse:null,m_limitImpulse:null,m_limitPositionImpulse:null,m_ptpMass:new b2Mat22,m_motorMass:null,m_intialAngle:null,m_lowerAngle:null,m_upperAngle:null,m_maxMotorTorque:null,m_motorSpeed:null,m_enableLimit:null,m_enableMotor:null,m_limitState:0});b2RevoluteJoint.tImpulse=new b2Vec2;var b2RevoluteJointDef=Class.create();Object.extend(b2RevoluteJointDef.prototype,b2JointDef.prototype);Object.extend(b2RevoluteJointDef.prototype,{initialize:function(){this.type=b2Joint.e_unknownJoint;this.userData=null;this.body1=null;this.body2=null;this.collideConnected=false;this.type=b2Joint.e_revoluteJoint;this.anchorPoint=new b2Vec2(0,0);this.lowerAngle=0;this.upperAngle=0;this.motorTorque=0;this.motorSpeed=0;this.enableLimit=false;this.enableMotor=false},anchorPoint:null,lowerAngle:null,upperAngle:null,motorTorque:null,motorSpeed:null,enableLimit:null,enableMotor:null});
///==============================================================================================
                
    
    var worldAABB;
    var world;

    function init() {


        // init box2d
        worldAABB = new b2AABB();
        worldAABB.minVertex.Set(-5000, -5000);
        worldAABB.maxVertex.Set(window.innerWidth + 5000, window.innerHeight + 5000);

        world = new b2World(worldAABB, new b2Vec2(0, 0), true);

    }

    function inArrays(elem,array){
        var rt=-1;
        for (var i=0;i<array.length;i++){
            rt=$.inArray(elem,array[i].elements);
            if(rt!==-1)
                return {index:i,value:rt};
        }
        return rt;
    }
    
    function arrayIntersect(a, b)
    {   var rt=a,i=0;
        while(i<rt.length){
            if($.inArray(rt[i],b)===-1)
                rt.splice(i,1);
            else
                 i++;
        };
        return rt;
    };
    
    var bool = false;
    var wall_thickness = 100;
    var numInstance = 1;
    function throwable() {
        this.numInstance;
        this.delta = {X: 0, Y: 0};
        this.stage = {X: window.screenX, Y: window.screenY, Width: window.innerWidth, Height: window.innerHeight};
        this.walls = {left: null, right: null, top: null, bottom: null};
        this.isRunning = false;
        this.isMouseDown = false;
        this.mouse = {x: 0, y: 0};

        this.iterations = 1;

        this.wallsSetted = false;

        this.mouseJoint;

        this.elementsInArea=[];
        this.elements = [];
        this.bodies = [];
        this.properties = [];
        
        if (!bool) {
            $.extend(throwable.prototype, {
                defaults: {
                    infinitX: false,
                    gravity: {x: 0, y: 0},
                    timeStep: 1 / 40,
                    bounce: 0, // value between 0 and 1
                    containment: "window",
                    shape: "box", 
                    impulse:null,
                    fixed: false,
                    drag: true,
                    damping:0,
                    collisionDetection:false,
                    areaDetection:[]
                },
                /**
                 * initElem initialize element
                 */
                initElem: function(elem) {

                    // Get box2d elements
                    var property = this.getElementProperties(elem);
                    this.properties.push(property);

                    var element = elem;
                    var $elem = $(element);
                    $elem.css({
                        "position": "absolute",
                        "left": property.X + 'px',
                        "top": property.Y + 'px',
                        "width": property.Width + 'px'
                    });
                    $(element).on('mousedown',function(event){
                        event.preventDefault();
                    });
                    $(element).on('mouseup', function(event){
                        event.preventDefault();
                    });
                    
                    var body;
                    if (this.defaults.shape === "box")
                        body=this.createBox(world, $elem.position().left + ($elem.width() >> 1), $elem.position().top + ($elem.height() >> 1), $elem.width() / 2, $elem.height() / 2, false, numInstance, Math.pow(2, 50) - 1);
                    else
                        body=this.createCircle(world, $elem.position().left + ($elem.width() >> 1), $elem.position().top + ($elem.height() >> 1), Math.max($elem.width() / 2, $elem.height() / 2), false, numInstance, Math.pow(2, 50) - 1);
                    
                    if(this.defaults.impulse){
                        this.applyImpulse(body);
                    }
                    
                    // Apply damping
                    if(this.defaults.damping>0){
                        body.m_linearDamping=1000/(1000+this.defaults.damping);
                        body.m_angularDamping=1000/(1000+this.defaults.damping);
                    }
                    body.m_userData=elem;
                    this.bodies.push(body);
                    
                    // Clean position dependencies
                    $("body").append($elem);
                    $("body").css({
                        "position":"static",
                        "margin":0
                    });
                },
                applyOptions:function(o,i){
                        
                        this.defaults = $.extend({}, this.defaults, o);
                        var body=this.bodies[i];
                        if(this.defaults.impulse){
                            body.WakeUp();
                            var f=this.defaults.impulse.f,p=this.defaults.impulse.p;
                            var ant_gravity = new b2Vec2(f * p.x * body.GetMass(), f * p.y * body.GetMass());
                            body.ApplyImpulse(ant_gravity,body.GetCenterPosition());
                        }
                },
                setEnv: function(elements, o) {
                    var _this = this;
                    numInstance *= 2;
                    this.numInstance = numInstance;
                    this.getBrowserDimensions();
                    this.defaults = $.extend({}, this.defaults, o);
                    if (this.defaults.containment !== "window") {
                        var c = this.defaults.containment;
                        if (c !== "parent")
                            this.stage = {X: c[0], Y: c[1], Width: c[2], Height: c[3]};
                        else {
                            var p = $(elements).parent();
                            if(!p.is("body")){
                                this.stage = {X: p.offset().left, Y: p.offset().top, Width:p.offset().left+p.width(), Height:p.offset().top+ p.height()};
                                this.defaults.containment=[p.offset().left, p.offset().top,p.offset().left+p.width(),p.offset().top+ p.height()];
                            }
                        }
                        
                    } else {
                        $(window).scroll(function() {
                            _this.handleScrollOrResize();
                        });
                        $(window).resize(function() {
                            _this.handleScrollOrResize();
                        });
                    }
                    
                    this.elements=elements;
                    
                    this.addEventRemoveElement();
                    // setwalls
                    this.setWalls(numInstance);

                    $(document).on('mousedown', function(event) {

                        _this.isMouseDown = true;

                    });
                    $(document).on('mouseup', function(event) {

                        _this.isMouseDown = false;

                    });
                    $(document).on('mousemove', function(event) {

                        if (!_this.isRunning)
                            _this.run();

                        _this.mouse.x = event.clientX;
                        _this.mouse.y = event.clientY;
                    });

                    $(document).on('touchstart', function(event) {
                        if (event.touches.length == 1) {

                            if (!_this.isRunning) {
                                _this.run();
                            }
                            _this.mouse.x = event.touches[0].pageX;
                            _this.mouse.y = event.touches[0].pageY;
                            _this.isMouseDown = true;
                        }
                    });
                    $(document).on('touchmove', function(event) {

                        if (event.touches.length == 1) {
                            event.preventDefault();
                            _this.mouse.x = event.touches[0].pageX;
                            _this.mouse.y = event.touches[0].pageY;
                        }

                    });
                    $(document).on('touchend', function(event) {

                        if (event.touches.length == 0) {

                            _this.isMouseDown = false;
                        }
                    });

                    $(window).on('deviceorientation', function(event) {
                        if (event.beta) {
                            this.defaults.gravity.x = Math.sin(event.gamma * Math.PI / 180);
                            this.defaults.gravity.y = Math.sin((Math.PI / 4) + event.beta * Math.PI / 180);
                        }
                    });

                },
                // init function
                loop: function() {
                    this.applyGravity();


                    this.delta.X += (0 - this.delta.X) * .5;
                    this.delta.Y += (0 - this.delta.Y) * .5;

                    if (this.defaults.drag)
                        this.mouseDrag();
                    world.Step(this.defaults.timeStep, this.iterations);

                    for (var i = 0; i < this.elements.length; i++) {

                        var body = this.bodies[i];
                        var element = this.elements[i];
                        var property=this.properties[i];
                        if(!body || !element || !property) break;
                        
                        if(this.defaults.collisionDetection)
                            this.collisionDetection();
                        if(this.defaults.areaDetection.length>0)
                            this.areaDetection();
                        
                        
                        element.style.left = (body.m_position0.x - (property.Width >> 1)) + 'px';
                        element.style.top = (body.m_position0.y - (property.Height >> 1)) + 'px';
                        if (i === 1) {
                            //console.log($(element).position().left -(stage.Width - properties[i].Width ))
                            //console.log(this.getProjectedHeight($(element)));
                        }
                        //if($(element).position().left $(document).width()) alert("out left");
                        var style = 'rotate(' + (body.m_rotation0 * 57.2957795) + 'deg)';

                        element.style.transform = style;
                        element.style.WebkitTransform = style + ' translateZ(0)'; // Force HW Acceleration
                        element.style.MozTransform = style;
                        element.style.OTransform = style;
                        element.style.msTransform = style;
                    }
                },
                removeElement:function(index){
                    this.elements.splice(index, 1);
                    this.bodies.splice(index, 1);
                    this.properties.splice(index, 1);
                },
                addEventRemoveElement:function(){
                    var event= new $.Event("removeElement");
                    var initialremove=$.fn.remove;
                    $.fn.remove=function (){
                         var rt=initialremove.apply(this,arguments);
                         $(document).trigger(event);
                         return rt;
                    };
                    var _this=this;
                    $(document).bind("removeElement",function (){
                        _this.sync();
                    });
                },
                sync: function() {

                    this.elements =arrayIntersect($(this.elements.selector),this.elements);
                    var _this = this;
                    var i = 0;
                    this.bodies = $.grep(this.bodies, function(el) {
                        if (el.m_userData === _this.elements[i]) {
                            i++;
                            return true;
                        }
                        else {
                            _this.properties.splice(i,1);
                            el.Freeze();
                            return false;
                        }
                    });
                },
                areaDetection:function(){
                    var _this=this;
                    var detectArea = function(i,c,elementsInArea) {
                        var aabb = new b2AABB();
                        aabb.minVertex.Set(c[0], c[1]);
                        aabb.maxVertex.Set(c[2], c[3]);

                        // Query the world for overlapping shapes.
                        var k_maxCount = 100;
                        var shapes = [];
                        var count = world.Query(aabb, shapes, k_maxCount);
                        var elements=[];
                        for(var j=0;j<shapes.length;j++){
                            var elem=shapes[j].m_body.m_userData;
                            if(!$.isPlainObject(elem)&&$.inArray(elem,_this.elements)!==-1){
                                elements.push(elem);
                            }
                        }
                     
                        var inArea=$(elements).not(_this.elementsInArea[i]);
                        if (inArea.length !== 0) {
                            $(document).trigger("inarea", [inArea]);
                        }else{
                            var outArea=$(_this.elementsInArea[i]).not(elements);
                            if (outArea.length !== 0) {
                                $(document).trigger("outarea", [outArea]);
                            }
                        }
                         _this.elementsInArea[i]=elements;
                    };  
                   
                    var areas=this.defaults.areaDetection;
                    for(var i=0; i<areas.length;i++){
                        detectArea(i,areas[i],this.elementsInArea[i]);
                    }
                },
                collisionDetection: function() {
                   
                    var _this=this;
                    var contactList = world.m_contactList;
                    var noCollision=true;
                       
                    var collision=function(shape1,shape2){
                         var e1 = shape1.m_body.m_userData,
                             e2 = shape2.m_body.m_userData;
                        if (!$.isPlainObject(e1) && !$.isPlainObject(e2) ){
                            $(document).trigger("collision", [e1, e2]);
                            noCollision=false;
                        }
                    };
                    var limit=0;    
                    // loop through all collisions
                    while (contactList && limit<100) {
                        var shape1 = contactList.m_shape1,
                            shape2 = contactList.m_shape2;

                        collision(shape1, shape2);
                        contactList = contactList.m_next;
                        limit++;
                    } 
                    
                    if(noCollision)  $(document).trigger("nocollision");
                },
                applyGravity: function() {
                    var g = this.defaults.gravity;
                    for (var i = 0; i < this.bodies.length; i++) {
                        var ant_gravity = new b2Vec2(350.0 * g.x * this.bodies[i].GetMass(), 350.0 * g.y * this.bodies[i].GetMass());
                        this.bodies[i].ApplyForce(ant_gravity, this.bodies[i].GetCenterPosition());
                    }
                },
                applyImpulse: function(body) {
                        var f=this.defaults.impulse.f,p=this.defaults.impulse.p;
                        var ant_gravity = new b2Vec2(f * p.x * body.GetMass(), f * p.y * body.GetMass());
                        body.ApplyImpulse(ant_gravity,body.GetCenterPosition());
                },
                handleScrollOrResize: function() {
                    this.getBrowserDimensions();
                    console.log(this.numInstance + "+");
                    this.setWalls(this.numInstance);
                },
                getProjectedWidth: function(elem) {
                    var rotationAngle = this.getRotation(elem);
                    return  elem.width() * Math.cos(rotationAngle) + elem.height() * Math.sin(rotationAngle);
                },
                getProjectedHeight: function(elem) {
                    var rotationAngle = this.getRotation(elem);
                    return  elem.width() * Math.sin(rotationAngle) + elem.height() * Math.cos(rotationAngle);
                },
                getRotation: function(obj) {
                    var matrix = obj.css("-webkit-transform") ||
                            obj.css("-moz-transform") ||
                            obj.css("-ms-transform") ||
                            obj.css("-o-transform") ||
                            obj.css("transform");
                    var angle;
                    if (matrix !== 'none') {
                        var values = matrix.split('(')[1].split(')')[0].split(',');
                        var a = values[0];
                        var b = values[1];
                        angle = Math.atan2(b, a);
                    } else {
                        angle = 0;
                    }
                    return angle;
                },
                run: function() {
                    var _this = this;
                    this.isRunning = true;
                    setInterval(function() {
                        _this.loop();

                    },25);

                },
                // Make box
                createBox: function(world, x, y, width, height, fixed, categoryBits, maskBits, element) {

                    if (typeof(fixed) === 'undefined')
                        fixed = true;
                    
                    var boxSd = new b2BoxDef();
                    if (categoryBits && maskBits) {
                        boxSd.categoryBits = categoryBits;
                        boxSd.maskBits = maskBits;
                    }

                    if (!fixed)
                        boxSd.density = 1.0;
                    var bounce=this.defaults.bounce;
                    if(bounce>0)
                        boxSd.restitution=Math.min(1,bounce);
                   
                  
                        
                    boxSd.extents.Set(width, height);

                    var boxBd = new b2BodyDef();
                    boxBd.AddShape(boxSd);
                    boxBd.position.Set(x, y);
                    boxBd.userData = {element: element};

                    return world.CreateBody(boxBd);
                }, 
                 // Make circle
                 createCircle: function(world, x, y, radius, fixed,categoryBits, maskBits, element) {

                    if (typeof(fixed) === 'undefined')
                        fixed = true;

                    var boxSd = new b2CircleDef();
                    
                    if (categoryBits && maskBits) {
                        boxSd.categoryBits = categoryBits;
                        boxSd.maskBits = maskBits;
                    }
                    
                    if (!fixed)
                        boxSd.density = 1.0;
                    
                    var bounce=this.defaults.bounce;
                    if(bounce>0)
                        boxSd.restitution=Math.min(1,bounce);
                    
                    boxSd.radius = radius;

                    var boxBd = new b2BodyDef();
                    boxBd.AddShape(boxSd);
                    boxBd.position.Set(x, y);
                    boxBd.userData = {element: element};

                    return world.CreateBody(boxBd);
                },
                mouseDrag: function() {

                    // mouse press
                    if (this.isMouseDown && !this.mouseJoint) {

                        var body = this.getBodyAtMouse();

                        if (body) {

                            var md = new b2MouseJointDef();
                            md.body1 = world.m_groundBody;
                            md.body2 = body;
                            md.target.Set(this.mouse.x + window.scrollX, this.mouse.y + window.scrollY);
                            md.maxForce = 30000.0 * body.m_mass;
                            md.timeStep = this.defaults.timeStep;
                            this.mouseJoint = world.CreateJoint(md);
                            body.WakeUp();
                        }
                    }

                    // mouse release
                    if (!this.isMouseDown) {

                        if (this.mouseJoint) {

                            world.DestroyJoint(this.mouseJoint);
                            this.mouseJoint = null;
                        }
                    }

                    // mouse move
                    if (this.mouseJoint) {

                        var p2 = new b2Vec2(this.mouse.x + window.scrollX, this.mouse.y + window.scrollY);
                        this.mouseJoint.SetTarget(p2);
                    }
                },
                getBodyAtMouse: function() {

                    // Make a small box.
                    var mousePVec = new b2Vec2();
                    mousePVec.Set(this.mouse.x + window.scrollX, this.mouse.y + window.scrollY);
                    var aabb = new b2AABB();
                    aabb.minVertex.Set(this.mouse.x + window.scrollX - 2, this.mouse.y + window.scrollY - 2);
                    aabb.maxVertex.Set(this.mouse.x + window.scrollX + 2, this.mouse.y + window.scrollY + 2);

                    // Query the world for overlapping shapes.
                    var k_maxCount = 10;
                    var shapes = [];
                    var count = world.Query(aabb, shapes, k_maxCount);
                    var body = null;

                    for (var i = 0; i < count; i++) {

                        if (shapes[i].m_body.IsStatic() === false) {

                            if (shapes[i].TestPoint(mousePVec)) {
                                var tmpBody = shapes[i].m_body;
                                if ($.inArray(tmpBody, this.bodies) !== -1) {
                                    body = tmpBody;
                                    break;
                                }
                            }
                        }
                    }
                    return body;
                },
                // create contaimnent walls        
                setWalls: function(i) {

                    if (this.wallsSetted) {

                        world.DestroyBody(this.walls.left);
                        world.DestroyBody(this.walls.top);
                        world.DestroyBody(this.walls.right);
                        world.DestroyBody(this.walls.bottom);

                        this.walls.left = null;
                        this.walls.top = null;
                        this.walls.right = null;
                        this.walls.bottom = null;
                    }
                    var x1 = this.stage.X, y1 = this.stage.Y, x2 = this.stage.Width, y2 = this.stage.Height;
                    this.walls.top = this.createBox(world, (x1 + x2) / 2, y1 - wall_thickness, x2 - x1, wall_thickness, true, i, i);
                    this.walls.bottom = this.createBox(world, (x1 + x2) / 2, y2 + wall_thickness, x2 - x1, wall_thickness, true, i, i);
                    this.walls.left = this.createBox(world, x1 - wall_thickness, (y2 + y1) / 2, wall_thickness, y2 - y1, true, i, i);
                    this.walls.right = this.createBox(world, x2 + wall_thickness, (y2 + y1) / 2, wall_thickness, y2 - y1, true, i, i);
                    this.wallsSetted = true;

                },
                // .. UTILS
                getElementProperties: function(element) {

                    var x = 0;
                    var y = 0;
                    var width = element.offsetWidth;
                    var height = element.offsetHeight;
                    do {
                        x += element.offsetLeft;
                        y += element.offsetTop;

                    } while (element = element.offsetParent);

                    return {X: x, Y: y, Width: width, Height: height};
                },
                getBrowserDimensions: function() {
                    if (this.defaults.containment === "window" || this.defaults.containment === "parent" /*|| this.defaults.fixed === true*/) {
                        var changed = false;
                        if (this.stage.X !== window.scrollX) {

                            this.delta.X = (window.scrollX - this.stage.X) * 50;
                            this.stage.X = window.scrollX;
                            changed = true;
                        }

                        if (this.stage.Y !== window.scrollY) {

                            this.delta.Y = (window.scrollY - this.stage.Y) * 50;
                            this.stage.Y = window.scrollY;
                            changed = true;
                        }

                        if (this.stage.Width !== window.innerWidth + window.scrollX) {

                            this.stage.Width = window.innerWidth + window.scrollX;
                            changed = true;
                        }

                        if (this.stage.Height !== window.innerHeight + window.scrollY) {

                            this.stage.Height = window.innerHeight + window.scrollY;
                            changed = true;
                        }
                        return changed;
                    } else
                    {
                        var c = this.defaults.containment;
                            this.stage = {X: c[0], Y: c[1], Width: c[2], Height: c[3]};
                    }

                }

            });
            bool = true;
        }
    }
    ;
    
    // JQuery.fn.throwable
    
    $.fn.throwable = function(options) {
        if ($.isFunction(this.each)) {
            var _this = this;
            if ($("body").data('throwable.instance') === undefined) {
                $("body").data('throwable.instance', true);
                init();
            }

            var throwableInstance = new throwable();

            var isEnvSet=false;
            var rt = this.each(function() {
                var i=inArrays(this, $.throwables),
                     exist=(i!==-1);
                if ( !exist || $.throwables[i.index].elements.selector !==_this.selector){  
                       
                    if(exist){
                        $.throwables[i.index].removeElement(i.index);
                        throwableInstance.defaults = $.extend({}, throwableInstance.defaults, $.throwables[i.index].defaults);
                    }
                    
                        if(!isEnvSet){
                   
                             throwableInstance.setEnv(_this, options);
                             isEnvSet=true;
                        }
                
                    throwableInstance.initElem(this);
                }
                else{ 
                    throwableInstance=$.throwables[i.index];
                    throwableInstance.applyOptions(options,i.value);
                }
            });
          
            if($.inArray(throwableInstance,$.throwables)===-1)
                $.throwables.push(throwableInstance);
            return rt;
        }
    };
    
    // array that will contient arrays
    $.throwables = [];

})(jQuery, window, document);