using System;
using System.Collections.Generic;

namespace BITKit.StateMachine
{
    public struct EmptyState:IState
    {
        public bool Enabled { get; set; }
        public void Initialize()
        {
        }

        public void OnStateEntry(IState old)
        {
        }

        public void OnStateUpdate(float deltaTime)
        {
        }

        public void OnStateExit(IState old, IState newState)
        {
        }
    }
    public interface IState
    {
        bool Enabled { get; set; }
        void Initialize();
        void OnStateEntry(IState old);
        void OnStateUpdate(float deltaTime);
        void OnStateExit(IState old, IState newState);
    }

    public interface IStateMachine<T> where T : IState
    {
        bool Enabled { get; set; }
        T CurrentState { get; set; }
        event Action<T,T> OnStateChanged;
        IDictionary<Type, T> StateDictionary { get; }
        void Initialize();
        void UpdateState(float deltaTime);
        void DisposeState();
        void TransitionState<State>() where State : T;
        void TransitionState(T state);
    }
}