PlayerScript

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
[RequireComponent(typeof(CharacterController))]
public class PlayerController : MonoBehaviour
{
    // Handling
    public float rotationSpeed = 450;
    public float walkSpeed = 5;
    public float runSpeed = 8;

    // System
    private Quaternion targetRotation;
    public bool controllerInput = false;


    // Components
    public Gun gun;
    private CharacterController controller;
    private Camera cam;

    void Start() {
        controller = GetComponent<CharacterController>();
        cam = Camera.main;


    }

    void Update() {

        if (controllerInput == true){

            ControlJoyPad();

        }else {

            ControlMouse();

        }



    }

    void ControlMouse() {

        Vector3 mousePos = Input.mousePosition;
        mousePos = cam.ScreenToWorldPoint(new Vector3(mousePos.x, mousePos.y, cam.transform.position.y - transform.position.y));
        targetRotation = Quaternion.LookRotation(mousePos - new Vector3(transform.position.x, 0, transform.position.z));
        transform.eulerAngles = Vector3.up * Mathf.MoveTowardsAngle(transform.eulerAngles.y, targetRotation.eulerAngles.y, rotationSpeed * Time.deltaTime);

        Vector3 input = new Vector3(Input.GetAxisRaw("Horizontal"), 0, Input.GetAxisRaw("Vertical"));
        Vector3 motion = input;
        motion *= (Mathf.Abs(input.x) == 1 && Mathf.Abs(input.z) == 1) ? .7f : 1;
        motion *= (Input.GetButton("Run")) ? runSpeed : walkSpeed;
        motion += Vector3.up * -8;

        controller.Move(motion * Time.deltaTime);

        if (Input.GetButtonDown("Shoot"))
        {
            gun.Shoot();

        }

    }

    void ControlJoyPad(){

        Vector3 look = new Vector3(Input.GetAxisRaw("LHorizontal"), 0, Input.GetAxisRaw("LVertical"));

        if (look != Vector3.zero)
        {
            targetRotation = Quaternion.LookRotation(look);
            transform.eulerAngles = Vector3.up * Mathf.MoveTowardsAngle(transform.eulerAngles.y, targetRotation.eulerAngles.y, rotationSpeed * Time.deltaTime);
        }

        Vector3 input = new Vector3(Input.GetAxisRaw("Horizontal"), 0, Input.GetAxisRaw("Vertical"));
        Vector3 motion = input;
        motion *= (Mathf.Abs(input.x) == 1 && Mathf.Abs(input.z) == 1) ? .7f : 1;
        motion *= (Input.GetButton("Run")) ? runSpeed : walkSpeed;
        motion += Vector3.up * -8;

        controller.Move(motion * Time.deltaTime);

        if (Input.GetAxisRaw("Shoot")< 0)
        {
            gun.Shoot();
        }
    }
}