using System;

using Framework.Services;

namespace Framework.Selection {

  /// <summary>Makes a game object selectable</summary>
  /// <remarks>>
  ///   The selection system provides a reusable way to select and query selected
  ///   objects for an actor. Any game object with a <see cref="Selectable" /> component
  ///   on it can be selected or highlighted by the selector components the game uses.   
  /// </remarks>
  public class Selectable : ScriptComponent, ISelectable {

    /// <summary>Whether the game object can be selected</summary>
    public bool CanBeHighlighted = true;

    /// <summary>Whether the game object can be added to an actor's selection</summary>
    public bool CanBeSelected = true;

    /// <summary>Whether the object is currently highlighted</summary>
    public bool IsHighlighted {
      get { return this.isHighlighted; }
      set {
        if(!this.CanBeHighlighted) {
          return;
        }
        
        this.isHighlighted = value;
      }
    }

    /// <summary>Whether the object is currently selected</summary>
    public bool IsSelected {
      get { return this.isSelected; }
      set {
        if(!this.CanBeSelected) {
          return;
        }
        
        this.isSelected = value;
      }
    }
    
    /// <summary>Whether the object is currently in a state that allows highlighting</summary>
    bool ISelectable.CanBeHighlighted {
      get { return this.CanBeHighlighted; }
    }

    /// <summary>Whether the object is currently in a state that allows selection</summary>
    bool ISelectable.CanBeSelected {
      get { return this.CanBeSelected; }
    }

    /// <summary>Whether the game object is currently highlighted</summary>
    private bool isHighlighted;
    /// <summary>Whether the game object is currently selected</summary>
    private bool isSelected;

  }
  
} // namespace Framework.Selection