slowpoker/Assets/Scripts/Player/Movement.cs

using UnityEngine;

namespace Player
{
    public class Movement : MonoBehaviour
    {
        public float walkSpeed;
        public float runSpeed;
        public float jumpForce = 160f;
        public float groundCheckRadius = 0.14f;
        public Transform groundCheck;
        public LayerMask groundLayer;
    
        [HideInInspector] public Rigidbody playerRigidbody;
        [HideInInspector] public bool isGrounded;
        [HideInInspector] public Vector3 moveDirection;
        
        private float _originalHeight;
        
        void Start()
        {
            playerRigidbody = GetComponent<Rigidbody>();
        }

        private Vector3 _velocity;
        void Update()
        {
            isGrounded = Physics.CheckSphere(groundCheck.position, groundCheckRadius, groundLayer);
            moveDirection = (transform.right * Input.GetAxis("Horizontal") + transform.forward * Input.GetAxis("Vertical")).normalized;
            if (isGrounded && Input.GetButtonDown("Jump"))
            {
                playerRigidbody.AddForce(Vector3.up * jumpForce, ForceMode.Impulse);
            }
            
            _velocity = moveDirection * (walkSpeed * Time.fixedDeltaTime);
        }

        private void FixedUpdate()
        {
            if (Cursor.lockState == CursorLockMode.Locked)
            {
                playerRigidbody.velocity = new Vector3(_velocity.x, playerRigidbody.velocity.y, _velocity.z);
            }
        }

        void OnDrawGizmosSelected()
        {
            if (groundCheck != null)
            {
                Gizmos.color = Color.red;
                Gizmos.DrawWireSphere(groundCheck.position, groundCheckRadius);
            }
        }
    }
}