glm::vec3 v4tov3(glm::vec4 v1)  {
    return glm::vec3(v1.x, v1.y, v1.z);
}

void CameraFP::calculate_view()  {
    glm::vec4 forward = glm::vec4(0.0f, 0.0f, -1.0f, 0.0f);
    glm::vec4 forward_rotated = m_rotation * forward;

    target = position += glm::normalize(forward_rotated);

    m_view = glm::lookAt(v4tov3(position), v4tov3(target), v4tov3(up));
}