KSP Mastcam - Source Code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UnityEngine;
using KSP;
namespace Mastcam
{

    public class mastcam : PartModule
    {

        private GameObject mountB;
        private GameObject mastCamera;
        private GameObject cam;
        private float[] rotation = new float[2];
        private FlightCamera flightCam;
        private bool camActive;

        [KSPField(isPersistant = false)]
        public float horizontalSensitivity;
        [KSPField(isPersistant = false)]
        public float verticalSensitivity;

        public void Start()
        {
            mountB = GameObject.Find("mountB");
            mastCamera = GameObject.Find("mastCamParent");
            cam = GameObject.Find("mastCamera");
            flightCam = FlightCamera.fetch;
            camActive = false;
        }

        public void Update()
        {
            if (HighLogic.LoadedSceneIsFlight)
            {
                camActive = !flightCam.updateActive;
                if (camActive) activateCamera();
                if (!camActive) deactivateCamera();
                if (camActive == true)
                {

                    if (Input.GetKey(KeyCode.LeftArrow)) rotation[0] -= horizontalSensitivity;
                    if (Input.GetKey(KeyCode.RightArrow)) rotation[0] += horizontalSensitivity;
                    if (Input.GetKey(KeyCode.UpArrow)) rotation[1] -= verticalSensitivity;
                    if (Input.GetKey(KeyCode.DownArrow)) rotation[1] += verticalSensitivity;
                    rotation[1] = Mathf.Clamp(rotation[1], -80, 80);


                    if (mountB != null) mountB.transform.localEulerAngles = new Vector3(0, 0, rotation[0]);
                    else
                        Debug.Log("no mountB");
                    if (mastCamera != null) mastCamera.transform.localEulerAngles = new Vector3(0, rotation[1], 0);
                    else
                        Debug.Log("no mastCamera");

                    flightCam.transform.position = cam.transform.position;
                    flightCam.transform.rotation = cam.transform.rotation;
                }
            }
        }

        [KSPEvent(active = true, guiActive = true, guiActiveEditor = false, guiActiveUnfocused = false, guiName = "Activate Camera")]
        public void activateCamera()
        {
            flightCam.DeactivateUpdate();
            Events["activateCamera"].active = false;
            Events["deactivateCamera"].active = true;
        }

        [KSPEvent(active = false, guiActive = true, guiActiveEditor = false, guiActiveUnfocused = false, guiName = "Deactivate Camera")]
        public void deactivateCamera()
        {
            flightCam.ActivateUpdate();
            Events["activateCamera"].active = true;
            Events["deactivateCamera"].active = false;
        }

        [KSPAction("Activate Camera")]
        public void activateCamera(KSPActionParam param)
        {
            activateCamera();
            Actions["activateCamera"].active = false;
            Actions["deactivateCamera"].active = true;
        }

        [KSPAction("Deactivate Camera")]
        public void deactivateCamera(KSPActionParam param)
        {
            deactivateCamera();
            Actions["activateCamera"].active = true;
            Actions["deactivateCamera"].active = false;
        }

    }
}