Unity: Make color of MeshRenderer transparent-CodePudding

I have a little question. I have a cube which has a Mesh Renderer and I gave it a default black material as its color. Now I would like to make the object more transparent when it touches something. I already set the Rendering Mode to Fade or Transparent. The tag is also set. This is my code:

public GameObject cube; 
private Color tempcolor; 
void Start()
{
    tempcolor = cube.GetComponent<MeshRenderer>().material.color;   
}
public void OnTriggerEnter(Collider other)
{
    if (other.CompareTag("Object"))
    {
        tempcolor.a -= 0.1f; 
    }
}

My code doesn't do the job. When I Debug.Log tempcolor.a it goes down but nothing happens with the cube. I also tried normal Renderer but it didn't work. Any idea?

I would be grateful if you can help me out

Kind regards

CodePudding user response：

You don't need tempColor and Start() event, just save the main component temporary.

public void OnTriggerEnter(Collider other)
{
    var meshRenderer = cube.GetComponent<MeshRenderer>();
    
    if (other.CompareTag("Object"))
    {
        var color = meshRenderer.material.color;
        color.a -= .1f;
        meshRenderer.material.color = color;
    }
}