public class StackFSM : IDisposable {

	// Default state
	private readonly Action<float> _defaultState;


	// FSM Stack
	private readonly Stack<Action<float>> _actionStack = new Stack<Action<float>>();

	// Disposing bool
	private bool _disposing;

	// Constructor
	public StackFSM(Action<float> defaultState) {
		_defaultState = defaultState;
	}

	// Get the current state from the stack
	public Action<float> GetCurrentState() {
		// Return the state at the top of the stack or return the default state if empty
		return _actionStack.Count > 0 ? _actionStack.Peek() : _defaultState;
	}

	// Push a new state to the stack
	public void PushState(Action<float> actionState) {
		_actionStack.Push(actionState);
	}

	// Pop a state from the Stack
	public void PopState() {
		_actionStack.Pop();
	}

	// Update the state machine
	public void Update(float deltaTime) {
		var state = GetCurrentState();
		state?.Invoke(deltaTime);
	}

	// Dispose of the class
	public void Dispose() {
		// Exit if already disposing
		if (_disposing) return;

		// Clear all actions from the stack
		_actionStack.Clear();

	}
}