void Game::render()
{
    window.clear();

    //this rebuilds the terrain vertex array
    if (!mapObj.tmap.load(mapObj.tmap.getTileSet(),
                          sf::Vector2u(64, 64),
                          mapObj.getTerrainType(),
                          mapObj.getMapWidth(),
                          mapObj.getMapHeight()));

    //this rebuilds the npc vertex array
    if (!mapObj.tmap.load(mapObj.tmap.getTileSet(),
                          sf::Vector2u(64, 64),
                          mapObj.getNpcType(),
                          mapObj.getMapWidth(),
                          mapObj.getMapHeight()));

    window.draw(mapObj.tmap);
    window.draw(mapObj.nmap);
    window.display();
}