1  namespace GUNRPG.Application.Distributed;
 2  
 3  /// <summary>
 4  /// Shared deterministic game engine that produces identical results given the same state and action.
 5  /// Used by both <see cref="LocalGameAuthority"/> and <see cref="DistributedAuthority"/>
 6  /// to ensure a single source of truth for game rules.
 7  /// </summary>
 8  public interface IDeterministicGameEngine
 9  {
10      /// <summary>
11      /// Applies a single player action to the current game state and returns the new state.
12      /// Must be pure and deterministic — identical inputs must always produce identical outputs.
13      /// </summary>
14      GameStateDto Step(GameStateDto state, PlayerActionDto action);
15  }