Limit Rotations

Hi guys, Im creating a 2D shooter, I have the main things down first, but with my 2d aming script I dont want my players arm to go over his head. I want to limit the arm rotation based on two variables, "maxUP" and "maxDown". How can I do this?

Code (csharp):

1. #pragma strict
2. private var flipRight = false;
3. private var flipLeft = false;
4. var mainCamera : Camera;
5. public var distance = 10.0;
6. var PlayerSprite : Transform;
7. var maxUP : float = 100;
8. var maxDown : float = -96;
9. function Update () {
10.     if(flipRight == true  flipLeft == false){
11.     transform.localScale.x = 1;
12.     transform.localScale.y = 1;
13.     var pos = mainCamera.WorldToScreenPoint(transform.position);
14.     var dir = Input.mousePosition - pos;
15.     var angle = Mathf.Atan2(dir.y, dir.x) * Mathf.Rad2Deg;
16.     transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
17.     transform.rotation.z = Mathf.Clamp (transform.rotation.z, maxDown, maxUP);
18.     }
19.     if(flipRight == false  flipLeft == true){
20.     //transform.localScale.x = -1;
21.     transform.localScale.y = -1;
22.     var pos2 = mainCamera.WorldToScreenPoint(transform.position);
23.     var dir2 = Input.mousePosition - pos2;
24.     var angle2 = Mathf.Atan2(dir2.y, dir2.x) * Mathf.Rad2Deg;
25.     transform.rotation = Quaternion.AngleAxis(-angle2, Vector3.forward);
26.     }
27. }
28.  
29. function PlayerFlipRight () {
30.     flipRight = true;
31.     flipLeft = false;
32. }
33.  
34. function PlayerFlipLeft () {
35.     flipRight = false;
36.     flipLeft = true;
37. }

Please reply ASAP, im really getting frustrated trying to find a good answer but most dont help me.

 

Just cap the angle.

some psuedocode below. This could be optimized better if you know a bit more about Quaternions but it'll do.

Code (csharp):

1.  
2. //do your angle calculations
3. if(transform.rotation.eulerangles.x > 100)
4. {
5. Quaternion newRot = Quaternion.euler(100,transform.rotation.eulerangles.y,transform.rotation.eulerangles.z);
6. transform.rotation = newRot;
7. }
8.  

 

glacius3000, psuedocode wont help me, im not an expert in quaternations but sir i need someone who actually help, by that i mean one who can actually show me an example code or just add a few lines of code to my code.

 

What is difficult on that piece of code?
It just says, if the rotation is over 100(°?) in the x-direction, it sets it to 100. Nothing too fancy about it.
The only noticable thing is: you can't set just a specific amount of rotation or scale to an Object. you always have to built up a complete Quarternion/Vector3.