支持PhysicsEditor生成的关于box2d的pilst文件的解析文件 ，支持cocos2d-x-2.1.5 亲测通过

GB2ShapeCache_x.h

#ifndef __CCSHAPECACHE_H__#define __CCSHAPECACHE_H__#include "cocos2d.h"USING_NS_CC;class BodyDef;class b2Body;namespace cocos2d {    class GB2ShapeCache : public CCObject{    public:        static GB2ShapeCache* sharedGB2ShapeCache(void);    public:        bool init();        void addShapesWithFile(const std::string &plist);        void addFixturesToBody(b2Body *body, const std::string &shape);        cocos2d::CCPoint anchorPointForShape(const std::string &shape);        void reset();        float getPtmRatio() { return ptmRatio; }        ~GB2ShapeCache() {}    private:        std::map<std::string, BodyDef *> shapeObjects;        GB2ShapeCache(void) {}        float ptmRatio;    };}#endif /* defined(__CCSHAPECACHE_H__) */

GB2ShapeCache_x.cpp

#include "GB2ShapeCache_x.h"#include "Box2D/Box2D.h"#include "..\cocoa\CCNS.h"using namespace cocos2d;/** * Internal class to hold the fixtures */class FixtureDef {public:    FixtureDef()    : next(NULL) {}        ~FixtureDef() {        delete next;        delete fixture.shape;    }        FixtureDef *next;    b2FixtureDef fixture;    int callbackData;};class BodyDef {public:BodyDef(): fixtures(NULL) {}~BodyDef() {if (fixtures)delete fixtures;}FixtureDef *fixtures;CCPoint anchorPoint;};static GB2ShapeCache *_sharedGB2ShapeCache = NULL;GB2ShapeCache* GB2ShapeCache::sharedGB2ShapeCache(void) {if (!_sharedGB2ShapeCache) {_sharedGB2ShapeCache = new GB2ShapeCache();        _sharedGB2ShapeCache->init();}return _sharedGB2ShapeCache;}bool GB2ShapeCache::init() {return true;}void GB2ShapeCache::reset() {std::map<std::string, BodyDef *>::iterator iter;for (iter = shapeObjects.begin() ; iter != shapeObjects.end() ; ++iter) {delete iter->second;}shapeObjects.clear();}void GB2ShapeCache::addFixturesToBody(b2Body *body, const std::string &shape) {std::map<std::string, BodyDef *>::iterator pos = shapeObjects.find(shape);assert(pos != shapeObjects.end());BodyDef *so = (*pos).second;FixtureDef *fix = so->fixtures;    while (fix) {        body->CreateFixture(&fix->fixture);        fix = fix->next;    }}cocos2d::CCPoint GB2ShapeCache::anchorPointForShape(const std::string &shape) {std::map<std::string, BodyDef *>::iterator pos = shapeObjects.find(shape);assert(pos != shapeObjects.end());BodyDef *bd = (*pos).second;return bd->anchorPoint;}void GB2ShapeCache::addShapesWithFile(const std::string &plist) {CCDictionary *dict = CCDictionary::createWithContentsOfFileThreadSafe(plist.c_str());CCAssert(dict != NULL, "Shape-file not found"); // not triggered - cocos2dx delivers empty dict if non was found    CCAssert(dict->count() != 0, "plist file empty or not existing");CCDictionary *metadataDict = (CCDictionary *)dict->objectForKey("metadata");    int format = static_cast<CCString *>(metadataDict->objectForKey("format"))->intValue();    ptmRatio = static_cast<CCString *>(metadataDict->objectForKey("ptm_ratio"))->floatValue();CCAssert(format == 1, "Format not supported");CCDictionary *bodyDict = (CCDictionary *)dict->objectForKey("bodies");    b2Vec2 vertices[b2_maxPolygonVertices];CCDictElement* pElement = NULL;CCDICT_FOREACH(bodyDict, pElement){BodyDef *bodyDef = new BodyDef();CCString *bodyName = ccs(pElement->getStrKey());CCDictionary *bodyData = (CCDictionary *)pElement->getObject();bodyDef->anchorPoint = CCPointFromString(static_cast<CCString *>(bodyData->objectForKey("anchorpoint"))->getCString());CCArray *fixtureList = (CCArray *)bodyData->objectForKey("fixtures");FixtureDef **nextFixtureDef = &(bodyDef->fixtures);CCObject *fixture = NULL;CCARRAY_FOREACH(fixtureList, fixture){b2FixtureDef basicData;CCDictionary *fixtureData = (CCDictionary *)fixture;int callbackData = 0;basicData.filter.categoryBits = static_cast<CCString *>(fixtureData->objectForKey("filter_categoryBits"))->intValue();            basicData.filter.maskBits = static_cast<CCString *>(fixtureData->objectForKey("filter_maskBits"))->intValue();            basicData.filter.groupIndex = static_cast<CCString *>(fixtureData->objectForKey("filter_groupIndex"))->intValue();            basicData.friction = static_cast<CCString *>(fixtureData->objectForKey("friction"))->floatValue();            basicData.density = static_cast<CCString *>(fixtureData->objectForKey("density"))->floatValue();            basicData.restitution = static_cast<CCString *>(fixtureData->objectForKey("restitution"))->floatValue();            basicData.isSensor = (bool)static_cast<CCString *>(fixtureData->objectForKey("isSensor"))->intValue();if(fixtureData->objectForKey("id")){basicData.userData = static_cast<CCString *>(fixtureData->objectForKey("id"));callbackData = static_cast<CCString *>(fixtureData->objectForKey("id"))->intValue();}std::string fixtureType = static_cast<CCString *>(fixtureData->objectForKey("fixture_type"))->getCString();//CCString *fixtureType = static_cast<CCString *>(fixtureData->objectForKey("fixture_type"))->getCString();if (fixtureType == "POLYGON") {//CCDictionary *polygons = (CCDictionary *)fixtureData->objectForKey("polygons");CCArray *polygons = (CCArray *)fixtureData->objectForKey("polygons");//CCDictElement *polygon = NULL;CCObject *polygon = NULL;//CCDICT_FOREACH(polygons, polygon)CCARRAY_FOREACH(polygons, polygon){FixtureDef *fix = new FixtureDef();fix->fixture = basicData; // copy basic datafix->callbackData = callbackData;b2PolygonShape *polyshape = new b2PolygonShape();                    int vindex = 0;//CCDictionary *polygonData = (CCDictionary *)polygon->getObject();CCArray *polygonData = (CCArray *)polygon;assert(polygonData->count() <= b2_maxPolygonVertices);//CCDictElement *offset = NULL;CCObject *offset = NULL;//CCDICT_FOREACH(polygonData, offset)CCARRAY_FOREACH(polygonData, offset){CCString *pStr = (CCString *)offset;CCPoint p = CCPointFromString(pStr->getCString());vertices[vindex].x = (p.x / ptmRatio) ;                         vertices[vindex].y = (p.y / ptmRatio) ;                         vindex++;}polyshape->Set(vertices, vindex);                    fix->fixture.shape = polyshape;*nextFixtureDef = fix;                    nextFixtureDef = &(fix->next);}} else if (fixtureType == "CIRCLE") {FixtureDef *fix = new FixtureDef();                fix->fixture = basicData; // copy basic data                fix->callbackData = callbackData;                CCDictionary *circleData = (CCDictionary *)fixtureData->objectForKey("circle");                b2CircleShape *circleShape = new b2CircleShape();                circleShape->m_radius = static_cast<CCString *>(circleData->objectForKey("radius"))->floatValue() / ptmRatio;CCPoint p = CCPointFromString(static_cast<CCString *>(circleData->objectForKey("position"))->getCString());                circleShape->m_p = b2Vec2(p.x / ptmRatio, p.y / ptmRatio);                fix->fixture.shape = circleShape;                // create a list                *nextFixtureDef = fix;                nextFixtureDef = &(fix->next);} else {CCAssert(0, "Unknown fixtureType");}// add the body element to the hashshapeObjects[bodyName->getCString()] = bodyDef;}}}