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diff --git a/src/game-server/trade.h b/src/game-server/trade.h
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+/*
+ *  The Mana Server
+ *  Copyright (C) 2007-2010  The Mana World Development Team
+ *
+ *  This file is part of The Mana Server.
+ *
+ *  The Mana Server 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 Server 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 Server.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GAMESERVER_TRADE_H
+#define GAMESERVER_TRADE_H
+
+#include <vector>
+
+class Character;
+class Inventory;
+
+class Trade
+{
+    public:
+
+        /**
+         * Sets up a trade between two characters.
+         * Asks for an acknowledgment from the second one.
+         */
+        Trade(Character *, Character *);
+
+        /**
+         * Cancels a trade by a given character (optional).
+         * Warns the other character the trade is cancelled.
+         * Takes care of cleaning afterwards.
+         */
+        void cancel();
+
+        /**
+         * 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);
+
+        /**
+         * Confirm the trade.
+         */
+        void confirm(Character *);
+
+        /*
+         * Agree to complete the trade
+         */
+        void agree(Character *c);
+
+        /**
+         * Adds some items to the trade.
+         */
+        void addItem(Character *, int slot, int amount);
+
+        /**
+         * Adds some money to the trade.
+         */
+        void setMoney(Character *, int amount);
+
+    private:
+
+        ~Trade();
+
+        struct TradedItem
+        {
+            unsigned short id;
+            unsigned char slot, amount;
+        };
+
+        typedef std::vector< TradedItem > TradedItems;
+
+        /*
+         * See trade.cpp for doc on TradeStates
+         */
+        enum TradeState
+        {
+            TRADE_INIT = 0,
+            TRADE_RUN,
+            TRADE_CONFIRM_WAIT,
+            TRADE_CONFIRMED,
+            TRADE_AGREE_WAIT
+        };
+
+        static bool perform(TradedItems items, Inventory &inv1, Inventory &inv2);
+
+        Character *mChar1, *mChar2;   /**< Characters involved. */
+        TradedItems mItems1, mItems2; /**< Traded items. */
+        int mMoney1, mMoney2;         /**< Traded money. */
+        TradeState mState;            /**< State of transaction. */
+        unsigned int mCurrencyId;     /**< The attribute to use as currency. */
+};
+
+#endif