public class ActionObject : GameComponent
{
	public static List<ActionObject> ActionObjects;

    [SerializeField]
    protected int maxActionPoints;
    [SerializeField]
    protected int actionPoints;
    public bool canAct = true;

	void OnEnable()
	{
		if(ActionObjects == null) ActionObjects = new List<ActionObject>();
		if(!ActionObjects.Contains(this)) ActionObjects.Add(this);
	}

	void OnDisable()
	{
		if(ActionObjects.Contains(this)) ActionObjects.Remove(this);
	}
}

public class TurnHandler : GameComponent
{
    private int turnNumber = 0;
    private bool allMoved = false;

    public void HowMany()
    {
        Debug.Log("Number of action objects: " + ActionObject.ActionObjects.Count);
    }

    private void Start()
    {
        HowMany();
    }
}