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diff --git a/src/game/UnitAI.h b/src/game/UnitAI.h
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+++ b/src/game/UnitAI.h
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+/*
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ *
+ * Copyright (C) 2008-2009 Trinity <http://www.trinitycore.org/>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef TRINITY_UNITAI_H
+#define TRINITY_UNITAI_H
+
+#include "Platform/Define.h"
+#include <list>
+
+class Unit;
+class Player;
+struct AISpellInfoType;
+
+//Selection method used by SelectTarget
+enum SelectAggroTarget
+{
+    SELECT_TARGET_RANDOM = 0,                               //Just selects a random target
+    SELECT_TARGET_TOPAGGRO,                                 //Selects targes from top aggro to bottom
+    SELECT_TARGET_BOTTOMAGGRO,                              //Selects targets from bottom aggro to top
+    SELECT_TARGET_NEAREST,
+    SELECT_TARGET_FARTHEST,
+};
+
+class TRINITY_DLL_SPEC UnitAI
+{
+    protected:
+        Unit * const me;
+    public:
+        explicit UnitAI(Unit *u) : me(u) {}
+        virtual void AttackStart(Unit *);
+        virtual void UpdateAI(const uint32 diff) = 0;
+
+        virtual void InitializeAI() { Reset(); }
+
+        virtual void Reset() {};
+
+        // Called when unit is charmed
+        virtual void OnCharmed(bool apply) = 0;
+
+        // Pass parameters between AI
+        virtual void DoAction(const int32 param = 0) {}
+        virtual void SetGUID(const uint64 &guid, const int32 param = 0) {}
+
+        Unit* SelectTarget(SelectAggroTarget target, uint32 position = 0, float dist = 0, bool playerOnly = false, int32 aura = 0);
+        void SelectTargetList(std::list<Unit*> &targetList, uint32 num, SelectAggroTarget target, float dist = 0, bool playerOnly = false, int32 aura = 0);
+
+        void AttackStartCaster(Unit *victim, float dist);
+
+        void DoCast(uint32 spellId);
+        void DoCast(Unit* victim, uint32 spellId, bool triggered = false);
+        void DoCastAOE(uint32 spellId, bool triggered = false);
+
+        void DoMeleeAttackIfReady();
+        bool DoSpellAttackIfReady(uint32 spell);
+
+        static AISpellInfoType *AISpellInfo;
+        static void FillAISpellInfo();
+};
+
+class TRINITY_DLL_SPEC PlayerAI : public UnitAI
+{
+    protected:
+        Player* const me;
+    public:
+        explicit PlayerAI(Player *p) : UnitAI((Unit*)p), me(p) {}
+
+        void OnCharmed(bool apply);
+};
+
+class TRINITY_DLL_SPEC SimpleCharmedAI : public PlayerAI
+{
+    public:
+        void UpdateAI(const uint32 diff);
+};
+
+#endif