C# Rpg Movement

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using System.Collections;

public class UserMovement : MonoBehaviour {

    public float jumpSpeed = 30.0f;
    public float gravity = 55.0f;
    public float runSpeed = 70.0f;
    public float runSpeed1 = 70.0f;
    public float runSpeed2 = 140.0f;
    private float walkSpeed = 90.0f;
    private float rotateSpeed = 150.0f;

    public bool grounded;
    private Vector3 moveDirection = Vector3.zero;
    private bool isWalking;
    private string moveStatus = "idle";

    public GameObject camera1;
    public CharacterController controller;
    public bool isJumping;
    private float myAng = 0.0f;
    public bool canJump = true;

    void Start () {

        controller = GetComponent<CharacterController>();
    }

    void Update ()
    {
        //force controller down slope. Disable jumping
        if(myAng > 50) {

            canJump = false;
        }
        else {

            canJump = true;
        }

            if(grounded) {

                isJumping = false;

                if(camera1.transform.gameObject.transform.GetComponent<UserCamera>().inFirstPerson == true) {
                    moveDirection = new Vector3((Input.GetMouseButton(0) ? Input.GetAxis("Horizontal") : 0),0,Input.GetAxis("Vertical"));
                }
                moveDirection = new Vector3((Input.GetMouseButton(1) ? Input.GetAxis("Horizontal") : 0),0,Input.GetAxis("Vertical"));

                moveDirection = transform.TransformDirection(moveDirection);
                moveDirection *= isWalking ? walkSpeed : runSpeed;

                moveStatus = "idle";



                if(moveDirection != Vector3.zero)
                    moveStatus = isWalking ? "walking" : "running";

                if (Input.GetKeyDown(KeyCode.Space) && canJump) {
                    moveDirection.y = jumpSpeed;
                    isJumping = true;
                }

            }


            // Allow turning at anytime. Keep the character facing in the same direction as the Camera if the right mouse button is down.

            if(camera1.transform.gameObject.transform.GetComponent<UserCamera>().inFirstPerson == false) {
                if(Input.GetMouseButton(1)) {
                    transform.rotation = Quaternion.Euler(0,Camera.main.transform.eulerAngles.y,0);
                } else {
                    transform.Rotate(0,Input.GetAxis("Horizontal") * rotateSpeed * Time.deltaTime, 0);

                }
            }
            else {
                if(Input.GetMouseButton(0) || Input.GetMouseButton(1)) {
                    transform.rotation = Quaternion.Euler(0,Camera.main.transform.eulerAngles.y,0);
                }

            }

            //Apply gravity
            moveDirection.y -= gravity * Time.deltaTime;


            //Move controller
            CollisionFlags flags;
            if(isJumping) {
                flags = controller.Move(moveDirection * Time.deltaTime);
            }
            else {
                flags = controller.Move((moveDirection + new Vector3(0,-100,0)) * Time.deltaTime);
            }

            grounded = (flags & CollisionFlags.Below) != 0;

    }

    void OnControllerColliderHit(ControllerColliderHit hit) {

            myAng = Vector3.Angle(Vector3.up, hit.normal);
    }
}