/* SPDX-FileCopyrightText: 2026 Project Tick
 * SPDX-FileContributor: Project Tick
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 *   MeshMC - A Custom Launcher for Minecraft
 *   Copyright (C) 2026 Project Tick
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#pragma once

template <typename T> inline void clamp(T& current, T min, T max)
{
	if (current < min) {
		current = min;
	} else if (current > max) {
		current = max;
	}
}

// List of numbers from min to max. Next is exponent times bigger than previous.

class ExponentialSeries
{
  public:
	ExponentialSeries(unsigned min, unsigned max, unsigned exponent = 2)
	{
		m_current = m_min = min;
		m_max = max;
		m_exponent = exponent;
	}
	void reset()
	{
		m_current = m_min;
	}
	unsigned operator()()
	{
		unsigned retval = m_current;
		m_current *= m_exponent;
		clamp(m_current, m_min, m_max);
		return retval;
	}
	unsigned m_current;
	unsigned m_min;
	unsigned m_max;
	unsigned m_exponent;
};