Unity PlayerMouseLook

 

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

public class PlayerMouseLook : MonoBehaviour

{

    public float mouseSensitivity = 1000f;

    public Transform playerBody;

   

    float xRotation = 0f;

    public GameObject checker;

    bool clicked;

    // Start is called before the first frame update

    void Start()

    {

        //Cursor.lockState = CursorLockMode.Locked;

    }

    // Update is called once per frame

    void Update()

    {

        if (Input.GetKey(KeyCode.LeftAlt))

        {

            if (Input.GetMouseButtonDown(0))

            {

                clicked = true;

            }

            if (!clicked)

            {

                checker.SetActive(true);

                SetCheckerPosition();

            }

        }

        else

        {

            clicked = false;

            checker.SetActive(false);

            LookRotation();

        }

    }

    void LookRotation()

    {

        float mouseX = Input.GetAxis("Mouse X") * mouseSensitivity * Time.deltaTime;

        float mouseY = Input.GetAxis("Mouse Y") * mouseSensitivity * Time.deltaTime;

        xRotation -= mouseY;

        xRotation = Mathf.Clamp(xRotation, -90f, 90f);

        transform.localRotation = Quaternion.Euler(xRotation, 0f, 0f);

        playerBody.Rotate(Vector3.up * mouseX);

    }

    void SetCheckerPosition()

    {

        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);

        if (Physics.Raycast(ray, out RaycastHit raycastHit))

        {

            checker.transform.position = raycastHit.point;

        }

    }

   

}