Big update.

src/strategy/ItemVisitors.cpp

@@ -0,0 +1,87 @@
+/*
+ * 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.
+ */
+
+#include "ItemVisitors.h"
+#include "Playerbots.h"
+
+bool FindUsableItemVisitor::Visit(Item* item)
+{
+    if (bot->CanUseItem(item->GetTemplate()) == EQUIP_ERR_OK)
+        return FindItemVisitor::Visit(item);
+
+    return true;
+}
+
+bool FindPotionVisitor::Accept(ItemTemplate const* proto)
+{
+    if (proto->Class == ITEM_CLASS_CONSUMABLE && (proto->SubClass == ITEM_SUBCLASS_POTION || proto->SubClass == ITEM_SUBCLASS_FLASK))
+    {
+        for (uint8 j = 0; j < MAX_ITEM_PROTO_SPELLS; j++)
+        {
+            SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(proto->Spells[j].SpellId);
+            if (!spellInfo)
+                return false;
+
+            for (uint8 i = 0; i < 3; i++)
+            {
+                if (spellInfo->Effects[i].Effect == effectId)
+                    return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+bool FindMountVisitor::Accept(ItemTemplate const* proto)
+{
+    for (uint8 j = 0; j < MAX_ITEM_PROTO_SPELLS; j++)
+    {
+        SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(proto->Spells[j].SpellId);
+        if (!spellInfo)
+            return false;
+
+        for (uint8 i = 0; i < 3; i++)
+        {
+            if (spellInfo->Effects[i].ApplyAuraName == SPELL_AURA_MOUNTED)
+                return true;
+        }
+    }
+
+    return false;
+}
+
+bool FindPetVisitor::Accept(ItemTemplate const* proto)
+{
+    if (proto->Class == ITEM_CLASS_MISC)
+    {
+        for (uint8 j = 0; j < MAX_ITEM_PROTO_SPELLS; j++)
+        {
+            SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(proto->Spells[j].SpellId);
+            if (!spellInfo)
+                return false;
+
+            for (uint8 i = 0; i < 3; i++)
+            {
+                if (spellInfo->Effects[i].Effect == SPELL_EFFECT_SUMMON_PET)
+                    return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+FindItemUsageVisitor::FindItemUsageVisitor(Player* bot, ItemUsage usage) : FindUsableItemVisitor(bot), usage(usage)
+{
+    context = GET_PLAYERBOT_AI(bot)->GetAiObjectContext();
+};
+
+bool FindItemUsageVisitor::Accept(ItemTemplate const* proto)
+{
+    if (AI_VALUE2(ItemUsage, "item usage", proto->ItemId) == usage)
+        return true;
+
+    return false;
+}