Here is a better explanation
createResource("media/materials/logo.material.xml");

from there the manager snips everything up to the first "/".
it then stores the snipped string including the "/" . so "media/" is added to a vector1.
the manager then searches the media/ directory for all its sub directory's and adds it to vector2.
when load is called it starts making strings and passes it to the load function.

the manager gets a resource from the query and trys to load it.

vector1[i] + vector2[i] + "/" +Horde3D::getResourceName(ress);

after it is loaded it moves onto the next in the list.

if createResource is called again with the same "media/" it does not check the directory for sub directorys or add anything to vector 1 or 2.

the manager cycles threw every possible string combination that can be made out of vecto1 + vector 2 + "\" + horde::getResourceName(ress); to find the desired resource. then loads it if not found it will tell horde to use its defualt resource.

#ifndef IRESOURCEMANAGER_H_INCLUDED
#define IRESOURCEMANAGER_H_INCLUDED
#include <string>
#include "IResource.h"

    class IResource;
    enum ResourceType{ mesh,geometry,pipeline,animation,material,shadercode,shader,texture,cubemap,effect};

    class IResourceManager{
        public:

            virtual void createResource(ResourceType type,std::string identifier, std::string path) = 0;
            virtual IResource *getResource(std::string identifier) = 0;
            virtual int getNode(std::string identifier) = 0;
            virtual int getRes(std::string identifier) = 0;
            virtual void destroyAll() = 0;


    };
    extern "C" IResourceManager* getResourceManager(void);

#endif // IRESOURCEMANAGER_H_INCLUDED

#ifndef CRESOURCEMANAGER_H_INCLUDED
#define CRESOURCEMANAGER_H_INCLUDED
#include <Horde3D.h>
#include <map>
#include "IResourceManager.h"
#include "CResource.h"
    class IResource;

    class CResourceManager: public IResourceManager{
        public:

            //! Create a Resource
            void createResource(ResourceType type,std::string identifier, std::string path);
            //! Returns the entire IResource Object
            IResource *getResource(std::string identifier);
            //! Returns the selected object node
            int getNode(std::string identifier);
            //! Returns the selected object resource
            int getRes(std::string identifier);
            //! Destroys all
            void destroyAll();

            static CResourceManager* Instance()
            {
                return &m_CResourceManager;
            }

        protected:
            CResourceManager(){}

        private:
            static CResourceManager m_CResourceManager;
            std::map<std::string,CResource*>resourceMap;

    };

#endif // CRESOURCEMANAGER_H_INCLUDED

#include "CResourceManager.h"

CResourceManager CResourceManager::m_CResourceManager;

extern "C"
{
    IResourceManager* getResourceManager(void)
    {
        return CResourceManager::Instance();
    }
}

void CResourceManager::createResource(ResourceType type, std::string identifier, std::string path){
    resourceMap[identifier] = new CResource;
    if(type == mesh){
        resourceMap[identifier]->loadMesh(path);}
    if(type == geometry){
        resourceMap[identifier]->loadGeometry(path);}
    if(type == animation){
        resourceMap[identifier]->loadAnimation(path);}
    if(type == material){
        resourceMap[identifier]->loadMaterial(path);}
    if(type == shadercode){
        resourceMap[identifier]->loadShaderCode(path);}
    if(type == shader){
        resourceMap[identifier]->loadShader(path);}
    if(type == texture){
        resourceMap[identifier]->loadTexture(path);}
    if(type == cubemap){
        resourceMap[identifier]->loadCubeMap(path);}
    if(type == effect){
        resourceMap[identifier]->loadEffect(path);}
    if(type == pipeline){
        resourceMap[identifier]->loadPipeLine(path);}

}

IResource *CResourceManager::getResource(std::string identifier){
    std::map<std::string,CResource*>::iterator i = resourceMap.find(identifier);
    if (i == resourceMap.end()) return NULL;
    return i->second;
}

int CResourceManager::getNode(std::string identifier){
    std::map<std::string,CResource*>::iterator i = resourceMap.find(identifier);
    if (i == resourceMap.end()) return NULL;
    return i->second->getNode();
}

int CResourceManager::getRes(std::string identifier){
    std::map<std::string,CResource*>::iterator i = resourceMap.find(identifier);
    if (i == resourceMap.end()) return NULL;
    return i->second->getResource();
}

void CResourceManager::destroyAll(){
    std::map<std::string,CResource*>::iterator i = resourceMap.begin();
    while ( i != resourceMap.end())
    {
        delete i->second;
        resourceMap.erase(i++);
    }
}

#ifndef IRESOURCE_H_INCLUDED
#define IRESOURCE_H_INCLUDED
#include <Horde3D.h>
#include <string>
#include <map>
#include <vector>

    class IResource{
        public:

            virtual void loadMesh(std::string resourcepath) = 0;
            virtual void loadGeometry(std::string resourcepath) = 0;
            virtual void loadAnimation(std::string resourcepath) = 0;
            virtual void loadMaterial(std::string resourcepath) = 0;
            virtual void loadShaderCode(std::string resourcepath) = 0;
            virtual void loadShader(std::string resourcepath) = 0;
            virtual void loadTexture(std::string resourcepath) = 0;
            virtual void loadCubeMap(std::string resourcepath) = 0;
            virtual void loadEffect(std::string resourcepath) = 0;
            virtual void loadPipeLine(std::string resourcepath)= 0;

            virtual int getResource() = 0;
            virtual int getNode() = 0;

        protected:
            virtual bool loadFile() = 0;
            virtual bool checkPath(std::string path) = 0;
            int node;
            int res;

    };

#endif // IRESOURCE_H_INCLUDED

#ifndef CRESOURCE_H_INCLUDED
#define CRESOURCE_H_INCLUDED
#include <Horde3D.h>
#include <Horde3DUtils.h>
#include <fstream>
#include <vector>
#include <map>
#include <iostream>
#include <vector>
#include <dirent.h>
#include "IResource.h"

    class CResource : public IResource{
        public:
            CResource();
            ~CResource();
            //!Load a mesh file node is created.
            void loadMesh(std::string resourcepath);
            //!Load a geo file node is created.
            void loadGeometry(std::string resourcepath);
            //!Load a file with animation information.
            void loadAnimation(std::string resourcepath);
            //!Load a material.
            void loadMaterial(std::string resourcepath);
            //!Load a file with shader code.
            void loadShaderCode(std::string resourcepath);
            //!Load a shader.
            void loadShader(std::string resourcepath);
            //!Load a texutre.
            void loadTexture(std::string resourcepath);
            //!Load a cubemap.
            void loadCubeMap(std::string resourcepath);
            //!Load a effect.
            void loadEffect(std::string resourcepath);
            //!Load a pipeline.
            void loadPipeLine(std::string resourcepath);

            //!Returns the resource created.
            int getResource();
            //!Returns the node created if one was.
            int getNode();
            static std::vector<CResource*> resourcehold;//Holds all CResource objects
        protected:
            bool loadFile();//does the tedious task of creating all the search strings and finding the file
            void searchDir(std::string dir);//searchs a givin directory for all its subdirectorys then stores in knownSubDirectory
            bool checkPath(std::string path);//checks to make sure the given then stores part of it in knownDirectory
            std::string resource;// stores the full resource path
            std::string resourcecut;//stores the cut path of a file from the last / down . ex. test.test.xml
            std::string resourcedir;//stores the directory of a given path up tot he first / ex. media/
            DIR *dp;//our directory poi8nter
            struct dirent *dirp;//our dirent structure pointer
            bool result;// result bool to see if loaded or not
       private:
            static std::vector<std::string> knownDirectorys;//vector that stores all know directorys ex. media/
            static std::vector<std::string> knownSubDirectorys;//vector that stores all subdirectorys ex. /test
            static bool onetime;//static bool so the first directory is added only one time
            size_t found;//stores location of a character
    };

#endif // CRESOURCE_H_INCLUDED

#include "CResource.h"

std::vector<CResource*> CResource::resourcehold;
std::vector<std::string> CResource::knownDirectorys;
std::vector<std::string> CResource::knownSubDirectorys;
bool CResource::onetime = false;

CResource::CResource(){
    resourcehold.push_back(this);

}

CResource::~CResource(){
    Horde3D::removeResource(res);
}

void CResource::loadMesh(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::SceneGraph,resourcecut.c_str(),0);
        loadFile();
        node = Horde3D::addNodes(RootNode,res);
    }

}

void CResource::loadGeometry(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::Geometry,resourcecut.c_str(),0);
        loadFile();
        node = Horde3D::addNodes(RootNode,res);
    }
}

void CResource::loadAnimation(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::Animation,resourcecut.c_str(),0);
        loadFile();
    }
}

void CResource::loadMaterial(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::Material,resourcecut.c_str(),0);
        loadFile();
    }
}

void CResource::loadShaderCode(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::Code,resourcecut.c_str(),0);
        loadFile();
    }
}

void CResource::loadShader(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::Shader,resourcecut.c_str(),0);
        loadFile();
    }
}

void CResource::loadTexture(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::Texture2D,resourcecut.c_str(),0);
        loadFile();
    }
}

void CResource::loadCubeMap(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::TextureCube,resourcecut.c_str(),0);
        loadFile();
    }
}

void CResource::loadEffect(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::Effect,resourcecut.c_str(),0);
        loadFile();
    }
}

void CResource::loadPipeLine(std::string resourcepath){

    if(checkPath(resourcepath) != false){
        res = Horde3D::addResource(ResourceTypes::Pipeline,resourcecut.c_str(),0);
        loadFile();
    }
}

int CResource::getResource(){
    return res;
}

int CResource::getNode(){
    return node;
}

bool CResource::loadFile(){

    std::ifstream inf;
    result = true;
    int ress = Horde3D::queryUnloadedResource();
    while(ress != 0){
      for( unsigned int i = 0; i < knownDirectorys.size(); ++i ){
        for(unsigned int j = 0; i < knownSubDirectorys.size(); ++j){
            std::string fileName = knownDirectorys[i] + knownSubDirectorys[j]  + "/" + Horde3D::getResourceName( ress );
            inf.clear();
            inf.open( fileName.c_str(), std::ios::binary );
            std::cout<<fileName<<std::endl;

            if( inf.good()) break;
        }
        if(inf.good())break;
    }

    if( inf.good() ){ // Resource file found
        //string filename =

        // Find size of resource file
        inf.seekg( 0, std::ios::end );
        int size = inf.tellg();
        // Copy resource file to memory
        char *data = new char[size + 1];
        inf.seekg( 0 );
        inf.read( data, size );
        inf.close();

        // Null-terminate buffer - this is important for XML data
        data[size] = '\0';
        // Send resource data to engine
        result &= Horde3D::loadResource( ress, data, size + 1 );
        delete[] data;
        }else{ // Resource file not found

        // Tell engine to use the dafault resource by using NULL as data pointer
        Horde3D::loadResource( ress, 0x0, 0 );
        result = false;
         }
        ress = Horde3D::queryUnloadedResource();
    }
    return result;
}

bool CResource::checkPath(std::string path){

    if(path.empty() != true){
        resource = path;
        found = path.find_last_of("/");
        resourcecut = path.substr(found+1);
        found = path.find_first_of("/");
        resourcedir = path.substr(0,found+1);

        if(onetime == false){
            onetime = true;
            knownDirectorys.push_back(resourcedir);
            searchDir(resourcedir);
        }

        std::vector<std::string>::iterator i = knownDirectorys.begin();
        bool there = false;

        for (i = knownDirectorys.begin(); i != knownDirectorys.end() ; i++){

            if( *i == resourcedir){
                there = true; }
        }

        if(there == false){
            knownDirectorys.push_back(resourcedir);
            searchDir(resourcedir);
        }

        return true;
    }else{
        return false;
    }
}

void CResource::searchDir(std::string dir){
    dp = opendir(dir.c_str());

    if(dp != NULL){
        while((dirp = readdir(dp)) != NULL){
            if(strcmp(".", dirp->d_name ) != 0 && strcmp("..",dirp->d_name) != 0){
                bool there2 = false;
                std::vector<std::string>::iterator i = knownSubDirectorys.begin();
                for (i = knownSubDirectorys.begin(); i != knownSubDirectorys.end() ; i++){
                if( *i == std::string(dirp->d_name)){
                    there2 = true; }
                }
                if(there2 == false){
                    knownSubDirectorys.push_back(std::string(dirp->d_name));
                    std::cout<<knownSubDirectorys.back();}
                }
        }
    closedir(dp);

}
}

#ifndef CRESOURCE_H_INCLUDED
#define CRESOURCE_H_INCLUDED

#include <Horde3D.h>
#include <Horde3DUtils.h>
#include <fstream>
#include <vector>
#include <map>
#include <iostream>
#include <vector>
#include "IResource.h"

#ifdef WIN32
#include "CDirSearch.h"
#else
#include <dirent.h>
#endif

namespace DTEngine{

    class CResource : public IResource{
        public:
            CResource();
            ~CResource();
            //!Load a mesh file node is created.
            void loadMesh(std::string resourcepath);
            //!Load a geo file node is created.
            void loadGeometry(std::string resourcepath);
            //!Load a file with animation information.
            void loadAnimation(std::string resourcepath);
            //!Load a material.
            void loadMaterial(std::string resourcepath);
            //!Load a file with shader code.
            void loadShaderCode(std::string resourcepath);
            //!Load a shader.
            void loadShader(std::string resourcepath);
            //!Load a texutre.
            void loadTexture(std::string resourcepath);
            //!Load a cubemap.
            void loadCubeMap(std::string resourcepath);
            //!Load a effect.
            void loadEffect(std::string resourcepath);
            //!Load a pipeline.
            void loadPipeLine(std::string resourcepath);

            //!Returns the resource created.
            int getResource();
            //!Returns the node created if one was.
            int getNode();
            static std::vector<CResource*> resourcehold;//Holds all CResource objects
        protected:
            bool loadFile();//does the tedious task of creating all the search strings and finding the file
            void searchDir(std::string dir);//searchs a givin directory for all its subdirectorys then stores in knownSubDirectory
            bool checkPath(std::string path);//checks to make sure the given then stores part of it in knownDirectory
            std::string resource;// stores the full resource path
            std::string resourcecut;//stores the cut path of a file from the last / down . ex. test.test.xml
            std::string resourcedir;//stores the directory of a given path up tot he first / ex. media/
            DIR *dp;//our directory poi8nter
            struct dirent *dirp;//our dirent structure pointer
            bool result;// result bool to see if loaded or not
       private:
            static std::vector<std::string> knownDirectorys;//vector that stores all know directorys ex. media/
            static std::vector<std::string> knownSubDirectorys;//vector that stores all subdirectorys ex. /test
            static bool onetime;//static bool so the first directory is added only one time
            size_t found;//stores location of a character
    };
}


#endif // CRESOURCE_H_INCLUDED

#ifndef CDIRSEARCH_H_INCLUDED
#define CDIRSEARCH_H_INCLUDED

//This is included if the compiler is compiling under windows.
//If it isnt it uses the standard dirent.h


#include <stdio.h>

struct dirent
{
  char d_name[FILENAME_MAX+1];
};

typedef struct DIR DIR;

DIR * opendir ( const char * dirname );
struct dirent * readdir ( DIR * dir );
int closedir ( DIR * dir );
void rewinddir ( DIR * dir );


#endif // CDIRSEARCH_H_INCLUDED

#ifdef WIN32
#include <windows.h>
#include <errno.h>
#include <sys/stat.h>
#include <string.h>
#include <malloc.h>
#include "CDirSearch.h"

struct DIR
{
  HANDLE hFind;
  char   szDirName[1];
};

//--------------------------------------------------------------------------
// Name         countslashes
//
// Description
//--------------------------------------------------------------------------
static int countslashes(const char *dirname)
{
  const char *p;
  int n;

  n = 0;
  p = dirname;

  while (*p)
    if (*p++ == '\\')
      ++n;

  return n;
}

//--------------------------------------------------------------------------
// Name         opendir
//
// Description
//--------------------------------------------------------------------------
DIR * opendir ( const char * dirname )
{
  DIR * dir;
  int   nameLen;
  struct stat st;
  unsigned char flagNetPath;
  unsigned char flagRootOnly;

  if (dirname == NULL || *dirname == 0)
  {
    errno = EINVAL;
    return NULL;
  }

  nameLen = strlen( dirname );
  flagNetPath = 0;
  if (dirname[0] == '\\' && dirname[1] == '\\')
    flagNetPath = 1;
  /* we have to check for root-dir-only case */
  flagRootOnly = 0;
  if (flagNetPath)
  {
    if (countslashes(&dirname[2]) == 2)  /* only the separation for server_name and the root*/
      flagRootOnly = 1;
  }

  if ((dirname[nameLen-1] == '/' || dirname[nameLen-1] == '\\') &&
      (nameLen != 3 || dirname[1] != ':') && nameLen != 1 && !flagRootOnly)
  {
    char * t = alloca( nameLen );
    memcpy( t, dirname, nameLen );
    t[nameLen-1] = 0;
    dirname = t;
    --nameLen;
  }

  if (stat( dirname, &st ))
    return NULL;

  if ((st.st_mode & S_IFDIR) == 0)
  {
    // this is not a DIR
    errno = ENOTDIR;
    return NULL;
  }

  if ((dir = malloc( sizeof( DIR ) + nameLen + 2 )) == NULL)
  {
    errno = ENOMEM;
    return NULL;
  }

  dir->hFind = INVALID_HANDLE_VALUE;

  memcpy( dir->szDirName, dirname, nameLen );
  if (nameLen && dirname[nameLen-1] != ':' && dirname[nameLen-1] != '\\' &&
      dirname[nameLen-1] != '/')
  {
    dir->szDirName[nameLen++] = '\\';
  }
  dir->szDirName[nameLen] = '*';
  dir->szDirName[nameLen+1] = 0;

  return dir;
};

//--------------------------------------------------------------------------
// Name         readdir
//
// Description
//--------------------------------------------------------------------------
struct dirent * readdir ( DIR * dir )
{
  static WIN32_FIND_DATA fData;

  if (dir == NULL)
  {
    errno = EBADF;
    return NULL;
  }

  do
  {
    int ok = 1;

    if (dir->hFind == INVALID_HANDLE_VALUE)
    {
      dir->hFind = FindFirstFile( dir->szDirName, &fData );
      if (dir->hFind == INVALID_HANDLE_VALUE)
        ok = 0;
    }
    else
    if (!FindNextFile( dir->hFind, &fData ))
      ok = 0;

    if (!ok)
    {
      switch (GetLastError())
      {
        case ERROR_NO_MORE_FILES:
        case ERROR_FILE_NOT_FOUND:
        case ERROR_PATH_NOT_FOUND:
          errno = ENOENT;
          break;

        case ERROR_NOT_ENOUGH_MEMORY:
          errno = ENOMEM;
          break;

        default:
          errno = EINVAL;
          break;
      }
      return NULL;
    }
  }
  while (fData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN);

  return (struct dirent *)&fData.cFileName;
};

//--------------------------------------------------------------------------
// Name         closedir
//
// Description
//--------------------------------------------------------------------------
int closedir ( DIR * dir )
{
  if (dir == NULL)
  {
    errno = EBADF;
    return -1;
  }
  if (dir->hFind != INVALID_HANDLE_VALUE)
    FindClose( dir->hFind );
  free( dir );
  return 0;
};

//--------------------------------------------------------------------------
// Name         rewinddir
//
// Description
//--------------------------------------------------------------------------
void rewinddir ( DIR * dir )
{
  if (dir)
  {
    if (dir->hFind != INVALID_HANDLE_VALUE)
      FindClose( dir->hFind );
    dir->hFind = INVALID_HANDLE_VALUE;
  }
};
#endif