SyncedKey Class

[SerializableAttribute]
public class SyncedKey

using UnityEngine;
using UnityEngine.Events;
using Alteruna;

public class MyInputClass : MonoBehaviour
{
    // Reference to a InputSynchronizable.
    public InputSynchronizable Input;
    // Key field.
    private SyncedKey _myKey;

    void Awake()
    {
        // Setup key.
        _myKey = new SyncedKey(Input, KeyCode.A);

        // Listen to key event.
        _myKey.OnInputChanged.AddListener(KeyChange);
    }

    void KeyChange(SyncedKey key) {
        // This is the same value as _myKey.Value.
        Debug.Log(key.Value);
    }
}

using UnityEngine;
using Alteruna;

public class MyJumpClass : MonoBehaviour
{
    // Reference to a InputSynchronizable.
    public InputSynchronizable Input;
    // Jump input that we can setup in the inspector.
    public SyncedKey Jump;
    // Jump force.
    public float jumpForce = 10f;

    void Awake()
    {
        Jump.Register(Input);
    }

    private void Update()
    {
        if (Jump)
        {
            transform.Translate(0, Time.deltaTime * jumpForce, 0);
        }
    }
}