using System;
using UnityEngine;

namespace State
{
    public class StateMachine : MonoBehaviour
    {
        public event Action<GameState> OnStateChange;
        public GameState CurrentState { get; protected set; }

        public void ChangeState(GameState newState)
        {
            CurrentState?.OnExit();
            CurrentState = newState;
            CurrentState?.OnEnter(this);
            OnStateChange?.Invoke(CurrentState);
        }

        private void Update()
        {
            CurrentState?.Update();
        }
    }
}