using UnityEngine;

public class PlayerMovement : MonoBehaviour
{
    public float moveSpeed = 5f;
    public float mouseSensitivity = 100f;

    public Transform playerBody;
    public Camera playerCamera;

    float xRotation = 0f;

    void Start()
    {
        Cursor.lockState = CursorLockMode.Locked;
    }

    void Update()
    {
        // Mouse look
        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);

        playerCamera.transform.localRotation = Quaternion.Euler(xRotation, 0f, 0f);
        playerBody.Rotate(Vector3.up * mouseX);

        // WASD Movement
        float x = Input.GetAxis("Horizontal");
        float z = Input.GetAxis("Vertical");

        Vector3 move = transform.right * x + transform.forward * z;
        transform.Translate(move * moveSpeed * Time.deltaTime, Space.World);
    }
}

using UnityEngine;

public class Gun : MonoBehaviour
{
    public float damage = 10f;
    public float range = 100f;
    public Camera fpsCam;
    public ParticleSystem muzzleFlash;

    void Update()
    {
        if (Input.GetButtonDown("Fire1"))
        {
            Shoot();
        }
    }

    void Shoot()
    {
        muzzleFlash.Play();

        RaycastHit hit;
        if (Physics.Raycast(fpsCam.transform.position, fpsCam.transform.forward, out hit, range))
        {
            Debug.Log("Hit " + hit.transform.name);
            // Here you can deal damage if the object has a health script
        }
    }
}

<script defer data-domain="html.cafe" src="https://milkymouse.com/js/script.js"></script>