replace main.cpp in stk-editor for universal mesh file to obj

main.cpp

#include <irrlicht.h>
#include <string>
#include <iostream>
#include "../lib/irrlicht/source/Irrlicht/COBJMeshWriter.h"
#include "spm/sp_mesh_loader.hpp"

int main(int argc, char* argv[])
{
    if (argc != 2)
    {
        std::cout << "Usage objmaker mesh.xxx" << std::endl;
        return 0;
    }
    using namespace irr;
    IrrlichtDevice* device = createDevice(video::EDT_NULL);
    if (!device)
        exit(-1);
    scene::ISceneManager* sm = device->getSceneManager();
    SPMeshLoader* spml = new SPMeshLoader(sm);
    sm->addExternalMeshLoader(spml);
    spml->drop();

    std::string str = argv[1];
    scene::IAnimatedMesh* mesh = sm->getMesh(str.c_str());
    if (!mesh)
        exit(-1);

    size_t lastindex = str.find_last_of(".");
    std::string new_name = str.substr(0, lastindex);
    new_name += ".obj";
    io::IWriteFile* write = sm->getFileSystem()->createAndWriteFile(new_name.c_str());
    if (!write)
        exit(-1);

    scene::COBJMeshWriter* mw = new scene::COBJMeshWriter(sm, sm->getFileSystem());
    mw->writeMesh(write, mesh);
    mw->drop();
    write->drop();
    device->drop();
    return 0;
}