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diff --git a/src/game-server/trade.hpp b/src/game-server/trade.hpp
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+/*
+ *  The Mana World Server
+ *  Copyright 2007 The Mana World Development Team
+ *
+ *  This file is part of The Mana World.
+ *
+ *  The Mana World 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
+ *  any later version.
+ *
+ *  The Mana World 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 The Mana World; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  $Id$
+ */
+
+#ifndef _TMSERV_GAMESERVER_TRADE_HPP_
+#define _TMSERV_GAMESERVER_TRADE_HPP_
+
+#include <vector>
+
+class Character;
+
+enum TradeState
+{
+    TRADE_INIT = 0, /**< Waiting for an ack from player 2. */
+    TRADE_RUN,      /**< Currently trading. */
+    TRADE_EXIT      /**< Waiting for an ack from player 2. */
+};
+
+struct TradedItem
+{
+    unsigned short id;
+    unsigned char slot, amount;
+};
+
+typedef std::vector< TradedItem > TradedItems;
+
+class Trade
+{
+    public:
+
+        /**
+         * Sets up a trade between two characters.
+         * Asks for an acknowledgment from the second one.
+         */
+        Trade(Character *, Character *);
+
+        ~Trade();
+
+        /**
+         * Cancels a trade by a given character (optional).
+         * Warns the other character the trade is cancelled.
+         * Takes care of cleaning afterwards.
+         */
+        void cancel(Character *);
+
+        /**
+         * Requests a trade to start with given public ID.
+         * Continues the current trade if the ID is correct, cancels it
+         * otherwise.
+         * @return true if the current trade keeps going.
+         */
+        bool request(Character *, int);
+
+        /**
+         * Agrees to complete the trade.
+         */
+        void accept(Character *);
+
+        /**
+         * Adds some items to the trade.
+         */
+        void addItem(Character *, int slot, int amount);
+
+    private:
+
+        Character *mChar1, *mChar2; /**< Characters involved. */
+        TradedItems mItems1, mItems2; /**< Traded items. */
+        TradeState mState;
+};
+
+#endif