Having a problem with rotation a camera around a focal point and having x rotation limits

So I am making a strategy game and I am working on the camera system first. Panning and zooming were easy but rotating around a focal point is a big pain. Using the scripting reference and past code I was able to code the rotation when you hold the middle mouse button, and that works. The problem is in when I try to set the up and down rotation within a certian threshold to prevent the camera from going upsidedown and through the floor. The game , no matter what i do will free the y input if i try to modify it, and after two hours of banging my head against the wall i decided I might as well ask the forums.

Here is the camera code

Code (CSharp):

1. using System.Collections;
2.  
3. public class CameraScript : MonoBehaviour {
4.  
5.     public Transform target;
6.     public float speedx = 50;
7.     public float speedy = 25;
8.     public Quaternion input;
9.     public float zoomSpeed = 5;
10.     public float miny = 10;
11.     public float maxy = 80;
12.     public Vector3 targetPosition;
13.     public Quaternion targetRotation;
14.     public float distanceFromFocal = 5;
15.     public float maxZoom = 1;
16.     public float minZoom = 15;
17.     // Use this for initialization
18.     void Start ()
19.     {
20.  
21.     }
22.  
23.     // Update is called once per frame
24.     void Update () {
25.         //zooming
26.         distanceFromFocal -= Input.GetAxis ("Mouse ScrollWheel") * zoomSpeed;
27.         if (distanceFromFocal < maxZoom)
28.             distanceFromFocal = maxZoom;
29.         if (distanceFromFocal > minZoom)
30.             distanceFromFocal = minZoom;
31.         //rotating
32.         if (target && Input.GetMouseButton(2))
33.         {
34.             input.x += Input.GetAxis("Mouse X") * speedx * Time.deltaTime ;
35.             input.y -= Input.GetAxis("Mouse Y") * speedy  * Time.deltaTime ;
36.  
37.  
38.  
39.  
40.         }
41.         if (target)
42.         {
43.             targetRotation = Quaternion.Euler (input.y, input.x, 0);
44.      
45.             targetPosition = targetRotation * new Vector3 (0, 0, -distanceFromFocal) + target.position;
46.      
47.      
48.      
49.      
50.             transform.rotation = targetRotation;
51.             transform.position = targetPosition;
52.         }
53.     }
54.  
55.  
56. }

and here is the focal point code for panning btw the camera is a child of the focal point.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class CameraFocal : MonoBehaviour {
5.  
6.     public Vector3 targetPosition;
7.     public Vector3 targetRotation;
8.     public float currentInputx;
9.     public float currentInputz;
10.     public float panSpeed = 7;
11.     public Vector3 velocity;
12.     public float panSmooth = 0.5f;
13.     public Transform cameraTransform;
14.     // Use this for initialization
15.     void Start () {
16.  
17.     }
18.  
19.     // Update is called once per frame
20.     void Update () {
21.  
22.         Vector3 horizontalInput = new Vector3(Input.GetAxisRaw ("Horizontal"), 0, Input.GetAxisRaw("Vertical"));
23.      
24.         if (horizontalInput.magnitude > 1)
25.         {
26.             horizontalInput.Normalize ();
27.         }
28.      
29.         Vector3 targetHorizontalMovement = horizontalInput;
30.         targetHorizontalMovement = cameraTransform.rotation * targetHorizontalMovement;
31.         targetHorizontalMovement.y = 0;
32.         targetHorizontalMovement.Normalize();
33.         targetHorizontalMovement *= horizontalInput.magnitude;
34.         transform.position += targetHorizontalMovement * panSpeed * Time.deltaTime;
35.  
36.  
37.     }
38. }

 

I don't know the solution to the problem, but a workaround is to use the mouse orbit script that comes standard with unity, and modify the controls to work with the zoom. You can set the Y Min limit and Y max.

 

I found the solution. For some reason mathf.clamp does not work in the version of unity i am using.