example-top-down-unity/Assets/Scripts/PlayerMovement.cs

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

public class PlayerMovement : MonoBehaviour
{
    [SerializeField] float moveSpeed = 5f;

    [SerializeField] Rigidbody2D rb;
    [SerializeField] Animator animator;

    Vector2 movement;
    private void Update()
    {
        movement.x = Input.GetAxisRaw("Horizontal");
        movement.y = Input.GetAxisRaw("Vertical");

        animator.SetFloat("Horizontal", movement.x);
        animator.SetFloat("Vertical", movement.y);
        animator.SetFloat("Speed", movement.sqrMagnitude);
    }

    private void FixedUpdate()
    {
        if (rb != null)
        {
            rb.MovePosition(rb.position + movement * moveSpeed * Time.fixedDeltaTime);
        }
        else
        {
            Debug.LogError("No Rigidbody2D found in PlayerMovement.cs");
        }
    }


}