text: /*************************************************************************/
  /*  navigation_mesh.h                                                    */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2020 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  */
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  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #ifndef NAVIGATION_MESH_INSTANCE_H
  #define NAVIGATION_MESH_INSTANCE_H
  
  #include "scene/3d/spatial.h"
  #include "scene/resources/mesh.h"
  #include "scene/resources/navigation_mesh.h"
  
  class Navigation;
  
  class NavigationMeshInstance : public Spatial {
  
  	GDCLASS(NavigationMeshInstance, Spatial);
  
  	bool enabled;
  	RID region;
  	Ref<NavigationMesh> navmesh;
  
  	Navigation *navigation;
  	Node *debug_view;
  	Thread *bake_thread;
  
  protected:
  	void _notification(int p_what);
  	static void _bind_methods();
  	void _changed_callback(Object *p_changed, const char *p_prop);
  
  public:
  	void set_enabled(bool p_enabled);
  	bool is_enabled() const;
  
  	void set_navigation_mesh(const Ref<NavigationMesh> &p_navmesh);
  	Ref<NavigationMesh> get_navigation_mesh() const;
  
  	/// Bakes the navigation mesh in a dedicated thread; once done, automatically
  	/// sets the new navigation mesh and emits a signal
  	void bake_navigation_mesh();
  	void _bake_finished(Ref<NavigationMesh> p_nav_mesh);
  
  	String get_configuration_warning() const;
  
  	NavigationMeshInstance();
  	~NavigationMeshInstance();
  };
  
  #endif // NAVIGATION_MESH_INSTANCE_H
  