void LayerManager::render()
{
    // Render all objects
    for(auto it: m_renderables)
    {
        // All objects in the zero layer have to be rendered with big parrallax
        if(it.first == 0)
        {
            Vector<int> offset(m_camera->getPosition().x() / 4, m_camera->getPosition().y() / 4 + 100);
            it.second->setOffset(offset);
        }
        // All objects in the first layer have to be rendered with small parrallax
        if(it.first == 1)
        {
            Vector<int> offset(m_camera->getPosition().x() / 2, m_camera->getPosition().y() / 2 + 100);
            it.second->setOffset(offset);
        }
        // Otherwise render without parrallax
        else
        {
            it.second->setOffset(m_camera->getPosition());
        }

        // Render the object
        it.second->render();
    }
}