[游戏开发]unity videoplayer 进度条控制

private bool isForward = true;
private long frame;

private void OnSliderDragStart()
{
    VideoPlayer.Pause();
}

private void OnSliderDragEnd()
{
    frame = VideoPlayer.frameCount * VideoSlider.value ;
    isForward = frame >= VideoPlayer.frame;
    VideoPlayer.time = length * VideoSlider.value ;
    VideoPlayer.Play();
}

private void Update()
{
    if (VideoPlayer != null && VideoPlayer.isPrepared)
    {
        if (isForward && VideoPlayer.frame < frame)
? ? ? ?     return;
? ? ? ? if (!isForward && VideoPlayer.frame > frame)
? ? ? ? ? ? return;
? ? ? ? VideoSlider.value = VideoPlayer.time / VideoPlayer.length ;
    }
}