text: /*************************************************************************/
  /*  world_2d.h                                                           */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                    http://www.godotengine.org                         */
  /*************************************************************************/
  /* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  #ifndef WORLD_2D_H
  #define WORLD_2D_H
  
  #include "global_config.h"
  #include "resource.h"
  #include "servers/physics_2d_server.h"
  
  class SpatialIndexer2D;
  class VisibilityNotifier2D;
  class Viewport;
  
  class World2D : public Resource {
  
  	GDCLASS(World2D, Resource);
  
  	RID canvas;
  	RID space;
  
  	SpatialIndexer2D *indexer;
  
  protected:
  	static void _bind_methods();
  	friend class Viewport;
  	friend class VisibilityNotifier2D;
  
  	void _register_viewport(Viewport *p_viewport, const Rect2 &p_rect);
  	void _update_viewport(Viewport *p_viewport, const Rect2 &p_rect);
  	void _remove_viewport(Viewport *p_viewport);
  
  	void _register_notifier(VisibilityNotifier2D *p_notifier, const Rect2 &p_rect);
  	void _update_notifier(VisibilityNotifier2D *p_notifier, const Rect2 &p_rect);
  	void _remove_notifier(VisibilityNotifier2D *p_notifier);
  
  	void _update();
  
  public:
  	RID get_canvas();
  	RID get_space();
  
  	Physics2DDirectSpaceState *get_direct_space_state();
  
  	void get_viewport_list(List<Viewport *> *r_viewports);
  
  	World2D();
  	~World2D();
  };
  
  #endif // WORLD_2D_H
  