PlayerControls.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class playerControls : MonoBehaviour
{
    public gunShooting _gunShooting; // class reference to gunShooting script connected to player
    public float moveSpeed, jumpHeight; //player move speed and height of jumps
    public bool isGrounded, canJump;//is player grounded and can he jump currently
    public float zMovement, xMovement;//current input on Z and X axis
    public bool isPlatformer;//is the game in platform mode

    public Rigidbody _rb;
    // Start is called before the first frame update
    void Start()
    {
        _rb = this.GetComponent<Rigidbody>();//set the rigidbody to this players
    }

    // Update is called once per frame
    void Update()
    {
        getInputs();//call getInputs function to detect inputs for movement
        removeInputs();//reset movement back to zero unless holding keys down

        if(Input.GetMouseButtonDown(0))//if player left clicks mouse shoot a bullet
        {
            _gunShooting.Shoot();//call Shoot function/methos in _gunShooting reference
        }
    }

    private void FixedUpdate()
    {
        
        _rb.AddForce(new Vector3(xMovement*moveSpeed,0,zMovement*moveSpeed),ForceMode.Force );//apply force to player based of x*Z input variables
    }

    public void getInputs()
    {
        if(isPlatformer == false)
        {
            if (Input.GetKey(KeyCode.W))//get if players holding down W
            {
                //Debug.Log("Player moving up");
                zMovement = 1;
            }
            else if (Input.GetKey(KeyCode.S))//get if players holding down S
            {
                //Debug.Log("Player moving down");
                zMovement = -1;
            }
        }



        if (Input.GetKey(KeyCode.A))//get if players holding down A
        {
            //Debug.Log("Player moving left");
            xMovement = -1;
        }
        else if (Input.GetKey(KeyCode.D))//get if players holding down D
        {
            //Debug.Log("Player moving right");
            xMovement = 1;
        }

    }

    public void removeInputs()
    {
        if(isPlatformer == false)
        {
            if (Input.GetKeyUp(KeyCode.W))//get if players let go of W
            {
                //Debug.Log("Player moving up");
                zMovement = 0;
            }
            else if (Input.GetKeyUp(KeyCode.S))//get if players let go of S
            {
                //Debug.Log("Player moving down");
                zMovement = 0;
            }
        }




        if (Input.GetKeyUp(KeyCode.A))//get if players let go of A
        {
            //Debug.Log("Player moving left");
            xMovement = 0;
        }
        else if (Input.GetKeyUp(KeyCode.D))//get if players let go of D
        {
            //Debug.Log("Player moving right");
            xMovement = 0;
        }
    }

}