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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+/*
+ * This code is based on the original source code of Lord Avalot d'Argent version 1.3.
+ * Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.
+ */
+
+#ifndef AVALANCHE_NIM_H
+#define AVALANCHE_NIM_H
+
+namespace Avalanche {
+
+class Nim {
+public:
+	Nim(AvalancheEngine *vm);
+	void resetVariables();
+	void synchronize(Common::Serializer &sz);
+	void playNim();
+
+private:
+	AvalancheEngine *_vm;
+
+	static const char * const kNames[2];
+
+	byte _old[3];
+	byte _stones[3];
+	byte _turns;
+	bool _dogfoodsTurn;
+	byte _stonesLeft;
+	bool _clicked;
+	int8 _row;
+	byte _number;
+	bool _squeak;
+	byte _playedNim; // How many times you've played Nim.
+
+	// Inner variables for dogFood(), find() and findAp().
+	bool _inAp[3];
+	bool _lmo; // Let Me Out!
+	byte _r[3];
+
+	void chalk(int x, int y, Common::String text);
+	void setup();
+	void board();
+	void startMove();
+	void showChanges();
+	void blip();
+	void findNextUp(); // Inner function for checkInput().
+	void findNextDown(); // Same as above.
+	bool checkInput(); // It returns TRUE if the player confirmed his selection of stones either by pressing RETURN or by clicking on a stone.
+	void takeSome();
+	void endOfGame();
+	bool find(byte x); // This gives TRUE if there's a pile with x stones in.
+	void findAp(byte start, byte stepSize);
+	void dogFood(); // AI procedure to play the game.
+};
+
+} // End of namespace Avalanche
+
+#endif // AVALANCHE_NIM_H