/*************************************************************************/
/*  path_3d.h                                                            */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/* "Software"), to deal in the Software without restriction, including   */
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/*************************************************************************/

#ifndef PATH_H
#define PATH_H

#include "scene/3d/node_3d.h"
#include "scene/resources/curve.h"

class Path3D : public Node3D {
	GDCLASS(Path3D, Node3D);

	Ref<Curve3D> curve;

	void _curve_changed();

	RID debug_instance;
	Ref<ArrayMesh> debug_mesh;

private:
	void _update_debug_mesh();

protected:
	void _notification(int p_what);

	static void _bind_methods();

public:
	void set_curve(const Ref<Curve3D> &p_curve);
	Ref<Curve3D> get_curve() const;

	Path3D();
	~Path3D();
};

class PathFollow3D : public Node3D {
	GDCLASS(PathFollow3D, Node3D);

public:
	enum RotationMode {
		ROTATION_NONE,
		ROTATION_Y,
		ROTATION_XY,
		ROTATION_XYZ,
		ROTATION_ORIENTED
	};

private:
	Path3D *path = nullptr;
	real_t prev_offset = 0.0; // Offset during the last _update_transform.
	real_t offset = 0.0;
	real_t h_offset = 0.0;
	real_t v_offset = 0.0;
	bool cubic = true;
	bool loop = true;
	RotationMode rotation_mode = ROTATION_XYZ;

	void _update_transform(bool p_update_xyz_rot = true);

protected:
	virtual void _validate_property(PropertyInfo &property) const override;

	void _notification(int p_what);
	static void _bind_methods();

public:
	void set_offset(real_t p_offset);
	real_t get_offset() const;

	void set_h_offset(real_t p_h_offset);
	real_t get_h_offset() const;

	void set_v_offset(real_t p_v_offset);
	real_t get_v_offset() const;

	void set_unit_offset(real_t p_unit_offset);
	real_t get_unit_offset() const;

	void set_loop(bool p_loop);
	bool has_loop() const;

	void set_rotation_mode(RotationMode p_rotation_mode);
	RotationMode get_rotation_mode() const;

	void set_cubic_interpolation(bool p_enable);
	bool get_cubic_interpolation() const;

	TypedArray<String> get_configuration_warnings() const override;

	PathFollow3D() {}
};

VARIANT_ENUM_CAST(PathFollow3D::RotationMode);

#endif // PATH_H