/*************************************************************************/
/*  openxr_hand.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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/*************************************************************************/

#ifndef OPENXR_HAND_H
#define OPENXR_HAND_H

#include "scene/3d/node_3d.h"
#include "scene/3d/skeleton_3d.h"

class OpenXRAPI;
class OpenXRHandTrackingExtension;

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

public:
	enum Hands {
		HAND_LEFT,
		HAND_RIGHT,
		HAND_MAX
	};

	enum MotionRange {
		MOTION_RANGE_UNOBSTRUCTED,
		MOTION_RANGE_CONFORM_TO_CONTROLLER,
		MOTION_RANGE_MAX
	};

private:
	OpenXRAPI *openxr_api = nullptr;
	OpenXRHandTrackingExtension *hand_tracking_ext = nullptr;

	Hands hand = HAND_LEFT;
	MotionRange motion_range = MOTION_RANGE_UNOBSTRUCTED;
	NodePath hand_skeleton;

	int64_t bones[XR_HAND_JOINT_COUNT_EXT];

	void _set_motion_range();

	Skeleton3D *get_skeleton();
	void _get_bones();
	void _update_skeleton();

protected:
	static void _bind_methods();

public:
	OpenXRHand();

	void set_hand(const Hands p_hand);
	Hands get_hand() const;

	void set_motion_range(const MotionRange p_motion_range);
	MotionRange get_motion_range() const;

	void set_hand_skeleton(const NodePath &p_hand_skeleton);
	NodePath get_hand_skeleton() const;

	void _notification(int p_what);
};

VARIANT_ENUM_CAST(OpenXRHand::Hands)
VARIANT_ENUM_CAST(OpenXRHand::MotionRange)

#endif // OPENXR_HAND_H