text: /*************************************************************************/
  /*  path_2d.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  */
  /* 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 PATH_2D_H
  #define PATH_2D_H
  
  #include "scene/2d/node_2d.h"
  #include "scene/resources/curve.h"
  
  class Path2D : public Node2D {
  
  	GDCLASS(Path2D, Node2D);
  
  	Ref<Curve2D> curve;
  
  	void _curve_changed();
  
  protected:
  	void _notification(int p_what);
  	static void _bind_methods();
  
  public:
  #ifdef TOOLS_ENABLED
  	virtual Rect2 _edit_get_rect() const;
  	virtual bool _edit_use_rect() const;
  	virtual bool _edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const;
  #endif
  
  	void set_curve(const Ref<Curve2D> &p_curve);
  	Ref<Curve2D> get_curve() const;
  
  	Path2D();
  };
  
  class PathFollow2D : public Node2D {
  
  	GDCLASS(PathFollow2D, Node2D);
  
  public:
  private:
  	Path2D *path;
  	real_t offset;
  	real_t h_offset;
  	real_t v_offset;
  	real_t lookahead;
  	bool cubic;
  	bool loop;
  	bool rotate;
  
  	void _update_transform();
  
  protected:
  	virtual void _validate_property(PropertyInfo &property) const;
  
  	void _notification(int p_what);
  	static void _bind_methods();
  
  public:
  	void set_offset(float p_offset);
  	float get_offset() const;
  
  	void set_h_offset(float p_h_offset);
  	float get_h_offset() const;
  
  	void set_v_offset(float p_v_offset);
  	float get_v_offset() const;
  
  	void set_unit_offset(float p_unit_offset);
  	float get_unit_offset() const;
  
  	void set_lookahead(float p_lookahead);
  	float get_lookahead() const;
  
  	void set_loop(bool p_loop);
  	bool has_loop() const;
  
  	void set_rotate(bool p_rotate);
  	bool is_rotating() const;
  
  	void set_cubic_interpolation(bool p_enable);
  	bool get_cubic_interpolation() const;
  
  	String get_configuration_warning() const;
  
  	PathFollow2D();
  };
  
  #endif // PATH_2D_H
  