Troubles with raycasting to find tags

Hi all,
I've been trying to make a crosshair that changes color when it hovers over objects with particular tags (i.e, "Friend" and "Enemy" tags). I had a look around, and saw you needed to raycast to find such things. Raycasting's unfamiliar territory for me, so I'm kinda flying blind here. This is the script I have:

Code (csharp):

1. var crosshairTexture : Texture2D;
2. var crosshairRange = 200;
3.  
4. private var hit : RaycastHit;
5. private var facingDirection = transform.TransformDirection(Vector3(0,0,1));
6.  
7. function Update ()
8. {
9.     if (Physics.Raycast(transform.position, facingDirection, hit, crosshairRange))
10.     {
11.         if(hit.collider.gameObject.tag != "Untagged")
12.         {
13.             if (hit.collider.gameObject.tag = "Enemy")
14.             {
15.                 crosshairTexture.color = Color.(1, 0, 0, 0.5);
16.             }
17.  
18.             else if (hit.collider.gameObject.tag = "Friend")
19.             {
20.                 crosshairTexture.color = Color.(0, 1, 0, 0.5);
21.             }
22.  
23.             else
24.             {
25.                 crosshairTexture.color = Color.(1, 1, 1, 0.5);
26.             }
27.         }
28.     }
29. }

In line 13 - if (hit.collider.gameObject.tag = "Enemy") it comes up with the error "expecting ), found =." and also "Unexpected token Enemy." I've tried a few different versions of the hit.collider.gameObject.tag thing, none of which have worked. I know this is probably just a simple mistake (last time I forgot to capitalize a 'u') but I can't for the life of me figure it out.

PS. Somebody told me that in the 'if' statements there needed to be == instead of just =, however when I tried that it came up with 27 errors...

Any help would be appreciated!

 

Try this:

Code (csharp):

1. var crosshairTexture : Texture2D;
2. var crosshairRange = 200;
3.  
4. private var hit : RaycastHit;
5. private var facingDirection = transform.TransformDirection(Vector3(0,0,1));
6.  
7. function Update ()
8. {
9.     if (Physics.Raycast(transform.position, facingDirection, hit, crosshairRange))
10.     {
11.         if(hit.collider.gameObject.CompareTag("Untagged"))
12.         {
13.             if (hit.collider.gameObject.CompareTag("Enemy"))
14.             {
15.                 crosshairTexture.color = Color(1, 0, 0, 0.5);
16.             }
17.  
18.             else if (hit.collider.gameObject.CompareTag("Friend"))
19.             {
20.                 crosshairTexture.color = Color(0, 1, 0, 0.5);
21.             }
22.  
23.             else
24.             {
25.                 crosshairTexture.color = Color(1, 1, 1, 0.5);
26.             }
27.         }
28.     }
29. }

 

You do need to use ==, and not =. It's not like this is optional or something, they're entirely different.

= is used to assign something to a variable. == is used to compare something.

You also want to use CompareTag, I think.

 

Excellent! Thanks sangi, that worked like a charm! Also, thanks for the clarification of the = symbols xomg, I couldn't tell the difference between the two before.

Right.. now on to the next problem