使用SDL2和OpenGL进行非瞬时/急速移动

我一直在研究一个小3D引擎,试图修复相机,使其不那么笨拙。我一直在使用SDL进行输入,当它工作时,它正在做这样的事情,如果我按住一个按钮,它会立即移动一次,然后暂停,然后开始适当移动,使移动感觉没有反应。

我记录了它的GIF,虽然可能很难看到发生了什么,但希望它能提供一些想法:

向前看,然后向右看会是这样的:

网址www.wwwwwww.www网址aaaaaaaaAAaaaaaaa

这里有重要的代码,但如有必要,请随时索取更多:

//Poll events
    SDL_Event event;
    while (m_EngineState != EngineState::EXIT)
    {
        m_last = m_current;
        m_current = SDL_GetPerformanceCounter();
        deltaTime = (double)((m_current - m_last) * 1000 / SDL_GetPerformanceFrequency());

        while (SDL_PollEvent(&event))
        {
            switch (event.type) {
            case SDL_QUIT:
                m_EngineState = EngineState::EXIT;
                break;

            case SDL_MOUSEMOTION:
                break;

            case SDL_KEYDOWN:
                m_Keys[event.key.keysym.sym] = true;
                break;
            case SDL_KEYUP:
                m_Keys[event.key.keysym.sym] = false;
                break;
            }
            ProcessEvents();
        }

void Engine::ProcessEvents()
{
    if (m_Keys[SDLK_w])
    {
        m_Camera->MoveForward(5.0f*(deltaTime*0.001));
    }
    if (m_Keys[SDLK_s])
    {
        m_Camera->MoveForward(-5.0f*(deltaTime*0.001));
    }
    if (m_Keys[SDLK_d])
    {
        m_Camera->MoveRight(5.0f*(deltaTime*0.001));
    }
    if (m_Keys[SDLK_a])
    {
        m_Camera->MoveRight(-5.0f*(deltaTime*0.001));
    }
}

void Camera::MoveForward(float amount)
{  
    m_pos += m_forward * amount;
}

void Camera::MoveRight(float amount)
{
    m_pos += glm::cross(m_forward, m_up) * amount;
}