Issue with Update and Raycast

So, I want to call these functions once:

Code (csharp):

1.  
2. function CrossHairEnable () {
3.     cr2.gameObject.SetActive(true);
4.     cr1.gameObject.SetActive(false);
5.     cr2.transform.localScale = Vector3.Lerp(closed, open, 50*Time.deltaTime);
6. }
7.  
8. function CrossHairDisable () {
9.     cr2.transform.localScale = Vector3.Lerp(open, closed, 50*Time.deltaTime);
10.     cr2.gameObject.SetActive(false);
11.     cr1.gameObject.SetActive(true);
12. }
13.  

And I need to do it through this:

Code (csharp):

1.  
2. function Update () {
3.     var ray = Camera.main.ScreenPointToRay (Input.mousePosition);
4.     var hit : RaycastHit;
5.     crNormal = true;
6.     if (Physics.Raycast (ray, hit, 3)) {
7.         if(hit.transform.tag == "npc") {
8.             crNormal = false;
9.         }
10.         if(hit.transform.tag == "door") {
11.             crNormal = false;
12.         }
13.     }
14.  
15.     if(crNormal) {
16.         CrossHairDisable();
17.     }else{
18.         CrossHairEnable();
19.     }
20. }
21.  

How could I go around this? If I use the "off -> on -> off when you need it again" thing, the ray won't re-cast and thus I won't be able to exit it. With how I've made this, it seems pretty hard. (At least to me.)

 

have you tried adding another boolean?

ie:

Code (csharp):

1.  
2. if(crNormal){
3.        if(!chd){
4.             CrossHairDiable();
5.             chd = true;
6.             che = false;
7.         }
8. }else{
9.         if(!che){
10.               CrossHairEnable();
11.               che = true;
12.               chd = false;
13.          }
14. }
15.  

 

What would che and chd be?

 

Also, since the look-at rayacst thing is being called all the time, I need it to activate, and then shut off, until you look at something else, say air or object.

 

Che and chd would just be two thrown together booleans, short for crosshairenable and crosshairdisable. And your right, I misunderstood that it was the raycaster you were trying to turn off.

problem with what your asking is, how would it know what it was looking at without the raycaster? Turning it off will be easy, but you won't be able to turn it on based on what they see, because without a raycaster it doesn't.

I guess you could turn it back on as soon as they're camera changes rotation, but I'm not sure thats what your looking for there. So for that you would keep up with what they were looking at by position, but that seems alot more complicated then using a raycast >_<

but if you did want to try that, just have a main camera rotation check in update, whenever its different from the last check, you know its move, you can re enable then disable after a time using a timestamp.

and honestly I figured someone with more experience would be trying to answer this by now...lol, so for that I apologize.

 

I haven't tested this, but I think you're looking for something like this. It's basically the same thing RavenMikal suggested. Sorry if there's some dumb error

Code (JavaScript):

1.  
2.   var mousePos:Vector3=Vector3.zero;
3.    var crNormal:boolean=true;
4.  
5.    function CrossHairToggle() {
6.      cr1.gameObject.SetActive(crNormal);
7.      cr2.gameObject.SetActive(!curNormal);
8.      if (crNormal)
9.        cr2.transform.localScale=Vector3.Lerp(open, closed, 50*Time.deltaTime);
10.      else
11.        cr2.transform.localScale=Vector3.Lerp(closed, open, 50*Time.deltaTime);
12.      crNormal=!crNormal;
13.    }
14.  
15.    function Update () {
16.      if (mousePos!=Input.mousePosition) {
17.        mousePos=Input.mousePosition;
18.  
19.        var ray = Camera.main.ScreenPointToRay (mousePos);
20.        var hit : RaycastHit;
21.        if (Physics.Raycast (ray, hit, 3)) {
22.          var tag:String=hit.transform.tag;  
23.          if (tag=="npc" || tag=="door") {
24.            if (crNormal)
25.              CrossHairToggle();
26.          }
27.          else if (!crNormal)
28.            CrossHairToggle();
29.        }
30.      }
31.    }

CrossHairToggle() toggles the value of crNormal, so when the function is executed, it won't execute again until the raycast hits the opposite type of object.
Let's say npc/door represents typeA, and everything else represents typeB. If your raycast hits a typeA object, CrossHairToggle() is executed and crNormal is toggled. If you hit another typeA object, without hitting a typeB object in between the two typeA hits, CrossHairToggle() will not be executed.

Edit:
If you want to be more efficient with the raycasts, you could just check if the mouse position has changed, and raycast only if there has been a change. It's not 100% what you're looking for, since it will still raycast if you're looking at the same object while moving the mouse slightly. I'm not sure how you could disable the raycasts completely after hitting one object, and enable it once you hit something else.