using UnityEngine;
using UnityEngine.Events;

[System.Serializable]
public class MyVectorEvent: UnityEvent<Vector3> { }

public class Player : MonoBehaviour
{
    public float moveSpeed = 3;

    // reveal an event in the inspector called "OnPositionChanged"
    public MyVectorEvent OnPositionChanged;

    void Update()
    {
        // Get input
        if (Input.GetKeyDown(KeyCode.Space))
        {
            // move forward
            transform.Translate(transform.forward * moveSpeed * Time.deltaTime);

            // send out an event broadcast to all listeners with the new transform position
            OnPositionChanged.Invoke(transform.position)
        }
    }
}