MovementScriptHelp

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

public class PlayerMovement2 : MonoBehaviour
{
    [SerializeField]
    private float walkSpeed = 5f;

    Animator animator;
    private string currentState;

    private float yAxis;
    private float xAxis;
    private Rigidbody2D rb2d;
    private bool isJumpPressed;
    private float jumpForce = 5;
    private int groundMask;
    private bool isGrounded;
    private string currentAnimation;
    private bool isAttackPressed;
    private bool isAttacking;

    [SerializeField]
    private float attackDelay = 0.3f;

    //Animation states
    const string IDLE = "IDLE";
    const string Jump = "Jump";
    const string BASIC_ATTACK = "Basic_attack";
    const string JUMP_ATTACK = "Jump_attack";
    const string fall = "fall";
    const string WALK = "WALK";



    // Start is called before the first frame update
    void Start()
    {
        rb2d = GetComponent<Rigidbody2D>();
        animator = GetComponent<Animator>();
        groundMask = 1 << LayerMask.NameToLayer("Ground");
    }

    void ChangeAnimationState(string newState)
    {
        if (currentState == newState) return;

        //play the animation'
        animator.Play(newState);

        //reassign the current state
        currentState = newState;
    }

    // Update is called once per frame
    void Update()
    {
        //Checking for inputs
        xAxis = Input.GetAxisRaw("Horizontal");

        //space jump key pressed?
        if (Input.GetKeyDown(KeyCode.Space))
        {
            isJumpPressed = true;
        }

        if (Input.GetMouseButtonDown(0))
        {
            isAttackPressed = true;
        }
    }

    //Physics based time step loop
    private void FixedUpdate()
    {
        //check if player is on the ground
        RaycastHit2D hit = Physics2D.Raycast(transform.position, Vector2.down, 0.1f, groundMask);

        if (hit.collider != null)
        {
            isGrounded = true;

        }
        else
        {
            isGrounded = false;
        }

        //--------------------------------------------------

        //Check update movement based on input
        Vector2 vel = new Vector2(0, rb2d.velocity.y);

        if (xAxis < 0)
        {
            vel.x = -walkSpeed;
            transform.localScale = new Vector2(-1, 1);
        }
        else if (xAxis > 0)
        {
            vel.x = walkSpeed;
            transform.localScale = new Vector2(1, 1);
        }
        else
        {
            vel.x = 0;
        }

        if (isGrounded && !isAttacking)
        {
            if (xAxis != 0)
            {
                ChangeAnimationState(WALK);
            }
            else
            {
                ChangeAnimationState(IDLE);
            }
        }

        //-------------------------------------

        //Check if trying to jump
        if (isJumpPressed && isGrounded)
        {
            rb2d.AddForce(new Vector2(0, jumpForce));
            isJumpPressed = false;
            ChangeAnimationState(Jump);
        }

        //assign the new velocity to the rigidbody
        rb2d.velocity = vel;

        //attack
        if (isAttackPressed)
        {
            isAttackPressed = false;

            if (!isAttacking)
            {
                isAttacking = true;

                if (isGrounded)
                {
                    ChangeAnimationState(BASIC_ATTACK);
                }
                else
                {
                    ChangeAnimationState(JUMP_ATTACK);
                }

                attackDelay = animator.GetCurrentAnimatorStateInfo(0).length;
                Invoke("AttackComplete", attackDelay);
            }

        }

    }

    void AttackComplete()
    {
        isAttacking = false;
    }

}

    //Animation manager