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/**************************************************************************/
/*  velocity_tracker_3d.h                                                 */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* 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 VELOCITY_TRACKER_3D_H
#define VELOCITY_TRACKER_3D_H

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

class VelocityTracker3D : public RefCounted {
	struct PositionHistory {
		uint64_t frame = 0;
		Vector3 position;
	};

	bool physics_step = false;
	Vector<PositionHistory> position_history;
	int position_history_len = 0;

protected:
	static void _bind_methods();

public:
	void reset(const Vector3 &p_new_pos);
	void set_track_physics_step(bool p_track_physics_step);
	bool is_tracking_physics_step() const;
	void update_position(const Vector3 &p_position);
	Vector3 get_tracked_linear_velocity() const;

	VelocityTracker3D();
};

#endif // VELOCITY_TRACKER_3D_H