Big update.

src/strategy/actions/BuyAction.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
+ */
+
+#ifndef _PLAYERBOT_BUYACTION_H
+#define _PLAYERBOT_BUYACTION_H
+
+#include "InventoryAction.h"
+
+class FindItemVisitor;
+class ObjectGuid;
+class Item;
+class Player;
+class PlayerbotAI;
+
+struct ItemTemplate;
+struct VendorItemData;
+
+class BuyAction : public InventoryAction
+{
+    public:
+        BuyAction(PlayerbotAI* botAI) : InventoryAction(botAI, "buy") { }
+
+        bool Execute(Event event) override;
+
+    private:
+        bool BuyItem(VendorItemData const* tItems, ObjectGuid vendorguid, ItemTemplate const* proto);
+        bool TradeItem(FindItemVisitor* visitor, int8 slot);
+        bool TradeItem(Item const* item, int8 slot);
+
+};
+
+#endif