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diff --git a/archived/projt-launcher/launcher/ExponentialSeries.h b/archived/projt-launcher/launcher/ExponentialSeries.h
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+++ b/archived/projt-launcher/launcher/ExponentialSeries.h
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+// SPDX-License-Identifier: GPL-3.0-only
+// SPDX-FileCopyrightText: 2026 Project Tick
+// SPDX-FileContributor: Project Tick Team
+/*
+ *  ProjT Launcher - Minecraft Launcher
+ *  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, version 3.
+ *
+ *  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, write to the Free Software Foundation,
+ *  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#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;
+};