unit Game.List;

interface
uses
  System.Generics.Collections,

  Game.Base;


type
  TGameList = class(TObjectList<TCustomGame>)
  private
    class var SInstance: TGameList;
  protected
    class procedure Finalize;
  public
    class function Instance: TGameList;

    procedure AutoDetect;
  end;


implementation
uses
  System.SysUtils,

  Game.Registry;


{ TGameList }
class procedure TGameList.Finalize;
begin
  FreeAndNil(SInstance);
end;


class function TGameList.Instance: TGameList;
begin
  if not Assigned(SInstance) then
    SInstance := TGameList.Create(True);

  Result := SInstance;
end;


procedure TGameList.AutoDetect;
var
  gameClass: TCustomGameClass;
  game: TCustomGame;

begin
  for gameClass in TGameRegistry.RegisteredGames do
  begin
    game := gameClass.AutoDetect;
    if Assigned(game) then
      Add(game);
  end;
end;


initialization
finalization
  TGameList.Finalize;

end.