namespace Syntriax.Engine.StateMachine;

public interface IState
{
    event StateUpdateEventHandler? OnStateUpdate;
    event StateTransitionedFromEventHandler? OnStateTransitionedFrom;
    event StateTransitionedToEventHandler? OnStateTransitionedTo;
    event StateTransitionReadyEventHandler? OnStateTransitionReady;

    string Name { get; }

    IState? GetNextState();

    void Update();
    void TransitionTo(IState from);
    void TransitionFrom(IState to);

    delegate void StateUpdateEventHandler(IState sender);
    delegate void StateTransitionedFromEventHandler(IState sender, IState toState);
    delegate void StateTransitionedToEventHandler(IState sender, IState fromState);
    delegate void StateTransitionReadyEventHandler(IState sender, IState toState);
}