如何在unity中平滑滑块值?

Question

我有一个脚本，根据slowMotionTimeLeft更新滑块值，以减少slowMotionTimeLeft。我正在使用一个带有协程的for循环，延迟为1秒，如下所示:

IEnumerator DecreaseSlowMotionTime()
{
for(int i = 0; i < 5f; i++)
{
slowMotionTimeLeft -= 1f; // decrease slow motion
///<summary>
/// if slow motion time is less than or equal to 0 break the loop
/// </summary>
if (slowMotionTimeLeft <= 0f)
{
onSlowMotion = false; 
break;
}
yield return new WaitForSecondsRealtime(1f); // delay
}   
}

现在我有一个滑块，我想基于slowMotiontimeLeft平滑地更新该值，但它不光滑，它像协程一样每秒更新，我试图修改值，但它不起作用。脚本如下:

// Slow Motion Bar
[Header("Slow Motion Slider Bar")]
[SerializeField] private Slider slowMoLeft;
[SerializeField] private float slowSliderSmoothSpeed = 0.125f;
// Other
private Player playerScript;
void Awake()
{
playerScript = FindObjectOfType<Player>();
}
void Update()
{
UpdateSlowMoSlider();
}
public void UpdateSlowMoSlider()
{
slowMoLeft.value = playerScript.slowMotionTimeLeft;
}

有什么建议吗?我需要更新协程计时器使等待0.1秒吗?

Answer 1

我会在Update:

// Remove the IEnumerator DecreaseSlowMotionTime(), instead add this, or if you already use Update() add the content of this method to Update()
public void Update()
{
if (slowMotionTimeLeft > 0)
{
slowMotionTimeLeft -= 1f * Time.deltaTime;
}
}

// Slow Motion Bar
[Header("Slow Motion Slider Bar")]
[SerializeField] private Slider slowMoLeft;
[SerializeField] private float slowSliderSmoothSpeed = 0.125f;
// Other
private Player playerScript;
void Awake()
{
playerScript = FindObjectOfType<Player>();
}
void Update()
{

slowMoLeft.value = playerScript.slowMotionTimeLeft;
}

Answer 2

你可以让你的代码更好:

您可以这样做，而不是每秒更新一次slowMotionTimeLeft:

IEnumerator DecreaseSlowMotionTime()
{
while (onSlowMotion)
{
// decrease slow motion without considering Time.timeScale
slowMotionTimeLeft -= Time.unscaledDeltaTime; 
// if slow motion time is less than or equal to 0 break the loop
if (slowMotionTimeLeft <= 0f)
{
onSlowMotion = false; 
}
// will execute again in the next frame
yield return null; 
}   
}

然后你的滑块将以1:1的速度平滑地减少。

Answer 3

我知道另一种方法只要下载DoTweenModuleUI就可以了https://github.com/fisheraf/Stroids/blob/master/Stroids/Assets/Demigiant/DOTween/Modules/DOTweenModuleUI.cs

将此脚本保存在任意外部插件文件夹中，然后使用

yourimageName.DoFillAmout (TargetValue、持续时间);就是这样比如这个imageSlider。DOFillAmount(迫害elixir/10,0.5 f);