Input System

using UnityEngine;
using UnityEngine.InputSystem;

public class PlayerController : MonoBehaviour
{
  private GameControls _actions; // Generated C# class
  private Rigidbody    _rb;
  private Vector2      _moveInput;

  void Awake()
  {
      _rb      = GetComponent<Rigidbody>();
      _actions = new GameControls();
  }

  void OnEnable()
  {
      _actions.Gameplay.Enable();
      _actions.Gameplay.Move.performed  += OnMove;
      _actions.Gameplay.Move.canceled   += OnMove;
      _actions.Gameplay.Jump.performed  += OnJump;
  }

  void OnDisable()
  {
      _actions.Gameplay.Move.performed  -= OnMove;
      _actions.Gameplay.Move.canceled   -= OnMove;
      _actions.Gameplay.Jump.performed  -= OnJump;
      _actions.Gameplay.Disable();
  }

  void OnMove(InputAction.CallbackContext ctx)
      => _moveInput = ctx.ReadValue<Vector2>();

  void OnJump(InputAction.CallbackContext ctx)
      => _rb.AddForce(Vector3.up * 5f, ForceMode.Impulse);

  void FixedUpdate()
      => _rb.velocity = new Vector3(_moveInput.x * 5f, _rb.velocity.y, _moveInput.y * 5f);
}

using UnityEngine;
using UnityEngine.InputSystem;
using TMPro;

public class KeyRebinder : MonoBehaviour
{
  [SerializeField] private InputActionReference jumpAction;
  [SerializeField] private TextMeshProUGUI bindingLabel;
  private InputActionRebindingExtensions.RebindingOperation _rebindOp;

  public void StartRebind()
  {
      jumpAction.action.Disable();
      bindingLabel.text = "Press any key...";

      _rebindOp = jumpAction.action
          .PerformInteractiveRebinding()
          .WithControlsExcluding("Mouse")
          .OnMatchWaitForAnother(0.1f)
          .OnComplete(op => {
              op.Dispose();
              jumpAction.action.Enable();
              bindingLabel.text = InputControlPath.ToHumanReadableString(
                  jumpAction.action.bindings[0].effectivePath);
              // Lưu binding string vào PlayerPrefs để persist
              PlayerPrefs.SetString("JumpBinding", jumpAction.action.SaveBindingOverridesAsJson());
          })
          .Start();
  }
}