using System;

namespace Framework.Actors {

  /// <summary>Controls the animation state for a walking actor</summary>
  public interface IWalkingActorPresenter {

    // Vertical speed is a useful property to use adaptive jump animations
    // (for example, an animal's hindquarters would be lower while jumping up,
    // but then the front paws would be lower upon falling down again).
    //
    // However, horizontal speed would need to be 1D for platformers,
    // but 2D (running + strafing) for first person and similar games.
    //
    // Unclear how to best match this to a lean set of interfaces. 
#if false
    /// <summary>Speed at which the actor is moving horizontally in units/second</summary>
    float HorizontalSpeed { get; set; }

    /// <summary>Speed at which the actor is moving vertically in units/second</summary>
    float VerticalSpeed { get; set; }
#endif
    
    /// <summary>Selects the state used for locomotion of the character</summary>
    void SetGroundedState();

    /// <summary>Selects the state that displays the character jumping or falling</summary>
    void SetAirState();

  }

} // namespace Framework.Actors