Question

在我的汽车战争游戏中，汽车转弯时产生了打滑痕迹。它工作正常，现在过了几秒钟后，我想减小它的alpha并将其从游戏中删除。我已经使用了跟踪渲染器来生成防滑标记。

我需要为材质分配什么着色器？
我可以通过哪种方式降低其alpha值？

目前，我已经使用了这种线索渲染器材料：

现在要逐渐减少alpha，我有这种代码：

private IEnumerator Start()
{
    Material myMaterial = GetComponent<Renderer>().material;

    while (true)
    {
        yield return new WaitForSeconds(1f);

        // check whether this skid trail has finished
        // (the Wheel script sets the parent to null when the skid finishes)
        if (transform.parent.name == "SkidTrailsDetachedParent")
        {

            // set the start colour
            //Color startCol = GetComponent<Renderer>().material.color;
            //Color startCol = myMaterial.GetColor("_EmisColor");
            Color startCol = myMaterial.GetColor("_TintColor");

            // wait for the persist time
            yield return new WaitForSeconds(persistTime);

            float t = Time.time;

            // fade out the skid mark
            while (Time.time < t + fadeDuration)
            {
                float i = Mathf.InverseLerp(t, t + fadeDuration, Time.time);
                //myMaterial.color = startCol * new Color(1, 1, 1, 1 - i);
                //myMaterial.SetColor("_EmisColor", startCol * new Color(1f, 1f, 1f, 1f - i));
                myMaterial.SetColor("_TintColor", startCol * new Color(1f, 1f, 1f, 1f - i));
                yield return null;
            }

            // the object has faded and is now done so destroy it
            Destroy(gameObject);
        }
    }
}

仍然，它对我不起作用。

Answer 1

TrailRenderer具有一个名为endColor的属性，您可以设置Color的alpha，以便该行逐渐淡入结尾。

void Start()
{
    Color noAlphaEndColor = line.endColor;
    line.endColor = new Color(noAlphaEndColor.r, noAlphaEndColor.g, noAlphaEndColor.b, 0.0f);
}

void Update()
{
    if (line.endColor.a < 0.001)
    {
        Destroy(gameObject);
    }
}

逐渐减少打滑的Alpha

1 个答案: