src/game/CreatureAI.h

   1 /*
   2  * Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #ifndef MANGOS_CREATUREAI_H
  20 #define MANGOS_CREATUREAI_H
  21
  22 #include "Common.h"
  23 #include "Platform/Define.h"
  24 #include "Policies/Singleton.h"
  25 #include "Dynamic/ObjectRegistry.h"
  26 #include "Dynamic/FactoryHolder.h"
  27
  28 class Unit;
  29 class Creature;
  30 struct SpellEntry;
  31
  32 #define TIME_INTERVAL_LOOK   5000
  33 #define VISIBILITY_RANGE    10000
  34
  35 class MANGOS_DLL_SPEC CreatureAI
  36 {
  37     public:
  38
  39         virtual ~CreatureAI();
  40
  41         // Called if IsVisible(Unit *who) is true at each *who move
  42         virtual void MoveInLineOfSight(Unit *) = 0;
  43
  44         // Called at each attack of m_creature by any victim
  45         virtual void AttackStart(Unit *) = 0;
  46
  47         // Called at stopping attack by any attacker
  48         virtual void EnterEvadeMode() = 0;
  49
  50         // Called at any heal cast/item used (call non implemented)
  51         virtual void HealBy(Unit * /*healer*/, uint32 /*amount_healed*/) {}
  52
  53         // Called at any Damage to any victim (before damage apply)
  54         virtual void DamageDeal(Unit * /*done_to*/, uint32 & /*damage*/) {}
  55
  56         // Called at any Damage from any attacker (before damage apply)
  57         virtual void DamageTaken(Unit *done_by, uint32 & /*damage*/) { AttackedBy(done_by); }
  58
  59         // Is unit visible for MoveInLineOfSight
  60         virtual bool IsVisible(Unit *) const = 0;
  61
  62         // Called at World update tick
  63         virtual void UpdateAI(const uint32 diff ) = 0;
  64
  65         // Called when the creature is killed
  66         virtual void JustDied(Unit *) {}
  67
  68         // Called when the creature kills a unit
  69         virtual void KilledUnit(Unit *) {}
  70
  71         // Called when the creature summon successfully other creature
  72         virtual void JustSummoned(Creature* ) {}
  73
  74         virtual void SummonedCreatureDespawn(Creature* /*unit*/) {}
  75
  76         // Called when hit by a spell
  77         virtual void SpellHit(Unit*, const SpellEntry*) {}
  78
  79         // Called when vitim entered water and creature can not enter water
  80         virtual bool canReachByRangeAttack(Unit*) { return false; }
  81
  82         // Called when the creature is attacked
  83         virtual void AttackedBy(Unit * /*attacker*/) {}
  84
  85         // Called when creature is spawned or respawned (for reseting variables)
  86         virtual void JustRespawned() {}
  87
  88         // Called at waypoint reached or point movement finished
  89         virtual void MovementInform(uint32 /*MovementType*/, uint32 /*Data*/) {}
  90 };
  91
  92 struct SelectableAI : public FactoryHolder<CreatureAI>, public Permissible<Creature>
  93 {
  94
  95     SelectableAI(const char *id) : FactoryHolder<CreatureAI>(id) {}
  96 };
  97
  98 template<class REAL_AI>
  99 struct CreatureAIFactory : public SelectableAI
 100 {
 101     CreatureAIFactory(const char *name) : SelectableAI(name) {}
 102
 103     CreatureAI* Create(void *) const;
 104
 105     int Permit(const Creature *c) const { return REAL_AI::Permissible(c); }
 106 };
 107
 108 enum Permitions
 109 {
 110     PERMIT_BASE_NO                 = -1,
 111     PERMIT_BASE_IDLE               = 1,
 112     PERMIT_BASE_REACTIVE           = 100,
 113     PERMIT_BASE_PROACTIVE          = 200,
 114     PERMIT_BASE_FACTION_SPECIFIC   = 400,
 115     PERMIT_BASE_SPECIAL            = 800
 116 };
 117
 118 typedef FactoryHolder<CreatureAI> CreatureAICreator;
 119 typedef FactoryHolder<CreatureAI>::FactoryHolderRegistry CreatureAIRegistry;
 120 typedef FactoryHolder<CreatureAI>::FactoryHolderRepository CreatureAIRepository;
 121 #endif