Object fade out when close.

I am working on a light effect for my game and would like it to fade out as you get closer. As you get further away however i would like it to fade back in. I have a basic script to make objects disappear when the player gets close but they dont come back. Everything else i know will likely cause the effect to clone itself when the player is far away from the effect causing a ton of lag. Can anyone help out with this?

Here's my script at the moment though it is rather basic:

Code (csharp):

1. var Player : Transform ;
2. var MinDist = 5;
3.  
4. function Start () {
5.  
6. }
7.  
8. function Update () {
9.     if(Vector3.Distance(transform.position,Player.position) <= MinDist){
10.     Destroy(gameObject);
11. }
12. }

EDIT: Ok just thought that it would be useful to say that i'm using the Particle Additive shader.

 

there are many ways to do it

Code (csharp):

1.  
2.  if(Vector3.Distance(transform.position,Player.position) <= MinDist){
3. gameObject.SetActive(false);
4. }
5. else{
6. gameObject.SetActive(false);
7. }
8.  

or

Code (csharp):

1.  
2.  if(Vector3.Distance(transform.position,Player.position) <= MinDist){
3. gameObject.renderer.enabled = false;
4. }
5. else{
6. gameObject.renderer.enabled = false;
7. }
8.  

or

Code (csharp):

1.  
2.  
3. var normalMat : Material
4. var transpMat : Material
5.  
6. function Update()
7. {
8.  
9.  if(Vector3.Distance(transform.position,Player.position) <= MinDist){
10. gameObject.renderer.material = transpMat;
11. }
12. else{
13. gameObject.renderer.material = normalMat;
14. }
15. }
16.  

 

Ok, the third script worked, however i need the effect to fade in. Do you have any idea how i could do this?

 

Use a lerp and set the color.

https://docs.unity3d.com/Documentation/ScriptReference/Color.Lerp.html

 

The material will have to support transparency, of course.