src/game/SpellAuras.h

   1 /*
   2  * Copyright (C) 2005-2009 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 #ifndef MANGOS_SPELLAURAS_H
  19 #define MANGOS_SPELLAURAS_H
  20
  21 #include "SpellAuraDefines.h"
  22
  23 struct DamageManaShield
  24 {
  25     uint32 m_spellId;
  26     uint32 m_modType;
  27     int32 m_schoolType;
  28     uint32 m_totalAbsorb;
  29     uint32 m_currAbsorb;
  30 };
  31
  32 struct Modifier
  33 {
  34     AuraType m_auraname;
  35     int32 m_amount;
  36     int32 m_miscvalue;
  37     uint32 periodictime;
  38 };
  39
  40 class Unit;
  41 struct SpellEntry;
  42 struct SpellModifier;
  43 struct ProcTriggerSpell;
  44
  45 // forward decl
  46 class Aura;
  47
  48 typedef void(Aura::*pAuraHandler)(bool Apply, bool Real);
  49 // Real == true at aura add/remove
  50 // Real == false at aura mod unapply/reapply; when adding/removing dependent aura/item/stat mods
  51 //
  52 // Code in aura handler can be guarded by if(Real) check if it should execution only at real add/remove of aura
  53 //
  54 // MAIN RULE: Code MUST NOT be guarded by if(Real) check if it modifies any stats
  55 //      (percent auras, stats mods, etc)
  56 // Second rule: Code must be guarded by if(Real) check if it modifies object state (start/stop attack, send packets to client, etc)
  57 //
  58 // Other case choice: each code line moved under if(Real) check is mangos speedup,
  59 //      each setting object update field code line moved under if(Real) check is significant mangos speedup, and less server->client data sends
  60 //      each packet sending code moved under if(Real) check is _large_ mangos speedup, and lot less server->client data sends
  61
  62 class MANGOS_DLL_SPEC Aura
  63 {
  64     friend Aura* CreateAura(SpellEntry const* spellproto, uint32 eff, int32 *currentBasePoints, Unit *target, Unit *caster, Item* castItem);
  65
  66     public:
  67         //aura handlers
  68         void HandleNULL(bool, bool)
  69         {
  70             // NOT IMPLEMENTED
  71         }
  72         void HandleUnused(bool, bool)
  73         {
  74             // NOT USED BY ANY SPELL OR USELESS
  75         }
  76         void HandleNoImmediateEffect(bool, bool)
  77         {
  78             // aura not have immediate effect at add/remove and handled by ID in other code place
  79         }
  80         void HandleBindSight(bool Apply, bool Real);
  81         void HandleModPossess(bool Apply, bool Real);
  82         void HandlePeriodicDamage(bool Apply, bool Real);
  83         void HandleAuraDummy(bool Apply, bool Real);
  84         void HandleAuraPeriodicDummy(bool apply, bool Real);
  85         void HandleModConfuse(bool Apply, bool Real);
  86         void HandleModCharm(bool Apply, bool Real);
  87         void HandleModFear(bool Apply, bool Real);
  88         void HandlePeriodicHeal(bool Apply, bool Real);
  89         void HandleModAttackSpeed(bool Apply, bool Real);
  90         void HandleModMeleeRangedSpeedPct(bool apply, bool Real);
  91         void HandleModCombatSpeedPct(bool apply, bool Real);
  92         void HandleModThreat(bool Apply, bool Real);
  93         void HandleModTaunt(bool Apply, bool Real);
  94         void HandleFeignDeath(bool Apply, bool Real);
  95         void HandleAuraModDisarm(bool Apply, bool Real);
  96         void HandleAuraModStalked(bool Apply, bool Real);
  97         void HandleAuraWaterWalk(bool Apply, bool Real);
  98         void HandleAuraFeatherFall(bool Apply, bool Real);
  99         void HandleAuraHover(bool Apply, bool Real);
 100         void HandleAddModifier(bool Apply, bool Real);
 101         void HandleAddTargetTrigger(bool Apply, bool Real);
 102         void HandleAuraModStun(bool Apply, bool Real);
 103         void HandleModDamageDone(bool Apply, bool Real);
 104         void HandleAuraUntrackable(bool Apply, bool Real);
 105         void HandleAuraEmpathy(bool Apply, bool Real);
 106         void HandleModOffhandDamagePercent(bool apply, bool Real);
 107         void HandleAuraModRangedAttackPower(bool Apply, bool Real);
 108         void HandleAuraModIncreaseEnergyPercent(bool Apply, bool Real);
 109         void HandleAuraModIncreaseHealthPercent(bool Apply, bool Real);
 110         void HandleAuraModRegenInterrupt(bool Apply, bool Real);
 111         void HandleHaste(bool Apply, bool Real);
 112         void HandlePeriodicTriggerSpell(bool Apply, bool Real);
 113         void HandlePeriodicTriggerSpellWithValue(bool apply, bool Real);
 114         void HandlePeriodicEnergize(bool Apply, bool Real);
 115         void HandleAuraModResistanceExclusive(bool Apply, bool Real);
 116         void HandleAuraModPetTalentsPoints(bool Apply, bool Real);
 117         void HandleModStealth(bool Apply, bool Real);
 118         void HandleInvisibility(bool Apply, bool Real);
 119         void HandleInvisibilityDetect(bool Apply, bool Real);
 120         void HandleAuraModTotalHealthPercentRegen(bool Apply, bool Real);
 121         void HandleAuraModTotalManaPercentRegen(bool Apply, bool Real);
 122         void HandleAuraModResistance(bool Apply, bool Real);
 123         void HandleAuraModRoot(bool Apply, bool Real);
 124         void HandleAuraModSilence(bool Apply, bool Real);
 125         void HandleAuraModStat(bool Apply, bool Real);
 126         void HandleAuraModIncreaseSpeed(bool Apply, bool Real);
 127         void HandleAuraModIncreaseMountedSpeed(bool Apply, bool Real);
 128         void HandleAuraModIncreaseFlightSpeed(bool Apply, bool Real);
 129         void HandleAuraModDecreaseSpeed(bool Apply, bool Real);
 130         void HandleAuraModUseNormalSpeed(bool Apply, bool Real);
 131         void HandleAuraModIncreaseHealth(bool Apply, bool Real);
 132         void HandleAuraModIncreaseEnergy(bool Apply, bool Real);
 133         void HandleAuraModShapeshift(bool Apply, bool Real);
 134         void HandleAuraModEffectImmunity(bool Apply, bool Real);
 135         void HandleAuraModStateImmunity(bool Apply, bool Real);
 136         void HandleAuraModSchoolImmunity(bool Apply, bool Real);
 137         void HandleAuraModDmgImmunity(bool Apply, bool Real);
 138         void HandleAuraModDispelImmunity(bool Apply, bool Real);
 139         void HandleAuraProcTriggerSpell(bool Apply, bool Real);
 140         void HandleAuraTrackCreatures(bool Apply, bool Real);
 141         void HandleAuraTrackResources(bool Apply, bool Real);
 142         void HandleAuraModParryPercent(bool Apply, bool Real);
 143         void HandleAuraModDodgePercent(bool Apply, bool Real);
 144         void HandleAuraModBlockPercent(bool Apply, bool Real);
 145         void HandleAuraModCritPercent(bool Apply, bool Real);
 146         void HandlePeriodicLeech(bool Apply, bool Real);
 147         void HandleModHitChance(bool Apply, bool Real);
 148         void HandleModSpellHitChance(bool Apply, bool Real);
 149         void HandleAuraModScale(bool Apply, bool Real);
 150         void HandlePeriodicManaLeech(bool Apply, bool Real);
 151         void HandleModCastingSpeed(bool Apply, bool Real);
 152         void HandleAuraMounted(bool Apply, bool Real);
 153         void HandleWaterBreathing(bool Apply, bool Real);
 154         void HandleModBaseResistance(bool Apply, bool Real);
 155         void HandleModRegen(bool Apply, bool Real);
 156         void HandleModPowerRegen(bool Apply, bool Real);
 157         void HandleModPowerRegenPCT(bool Apply, bool Real);
 158         void HandleChannelDeathItem(bool Apply, bool Real);
 159         void HandlePeriodicDamagePCT(bool Apply, bool Real);
 160         void HandleAuraModAttackPower(bool Apply, bool Real);
 161         void HandleAuraTransform(bool Apply, bool Real);
 162         void HandleModSpellCritChance(bool Apply, bool Real);
 163         void HandleAuraModIncreaseSwimSpeed(bool Apply, bool Real);
 164         void HandleModPowerCostPCT(bool Apply, bool Real);
 165         void HandleModPowerCost(bool Apply, bool Real);
 166         void HandleFarSight(bool Apply, bool Real);
 167         void HandleModPossessPet(bool Apply, bool Real);
 168         void HandleModMechanicImmunity(bool Apply, bool Real);
 169         void HandleAuraModSkill(bool Apply, bool Real);
 170         void HandleModDamagePercentDone(bool Apply, bool Real);
 171         void HandleModPercentStat(bool Apply, bool Real);
 172         void HandleModResistancePercent(bool Apply, bool Real);
 173         void HandleAuraModBaseResistancePCT(bool Apply, bool Real);
 174         void HandleModShieldBlockPCT(bool Apply, bool Real);
 175         void HandleAuraTrackStealthed(bool Apply, bool Real);
 176         void HandleModShieldBlock(bool Apply, bool Real);
 177         void HandleForceReaction(bool Apply, bool Real);
 178         void HandleAuraModRangedHaste(bool Apply, bool Real);
 179         void HandleRangedAmmoHaste(bool Apply, bool Real);
 180         void HandleModHealingDone(bool Apply, bool Real);
 181         void HandleModTotalPercentStat(bool Apply, bool Real);
 182         void HandleAuraModTotalThreat(bool Apply, bool Real);
 183         void HandleModUnattackable(bool Apply, bool Real);
 184         void HandleAuraModPacify(bool Apply, bool Real);
 185         void HandleAuraGhost(bool Apply, bool Real);
 186         void HandleAuraAllowFlight(bool Apply, bool Real);
 187         void HandleModRating(bool apply, bool Real);
 188         void HandleModRatingFromStat(bool apply, bool Real);
 189         void HandleModTargetResistance(bool apply, bool Real);
 190         void HandleAuraModAttackPowerPercent(bool apply, bool Real);
 191         void HandleAuraModRangedAttackPowerPercent(bool apply, bool Real);
 192         void HandleAuraModRangedAttackPowerOfStatPercent(bool apply, bool Real);
 193         void HandleAuraModAttackPowerOfStatPercent(bool apply, bool Real);
 194         void HandleSpiritOfRedemption(bool apply, bool Real);
 195         void HandleModManaRegen(bool apply, bool Real);
 196         void HandleComprehendLanguage(bool apply, bool Real);
 197         void HandleShieldBlockValue(bool apply, bool Real);
 198         void HandleModSpellCritChanceShool(bool apply, bool Real);
 199         void HandleAuraRetainComboPoints(bool apply, bool Real);
 200         void HandleModSpellDamagePercentFromStat(bool apply, bool Real);
 201         void HandleModSpellHealingPercentFromStat(bool apply, bool Real);
 202         void HandleAuraModDispelResist(bool apply, bool Real);
 203         void HandleAuraControlVehicle(bool apply, bool Real);
 204         void HandleModSpellDamagePercentFromAttackPower(bool apply, bool Real);
 205         void HandleModSpellHealingPercentFromAttackPower(bool apply, bool Real);
 206         void HandleAuraModPacifyAndSilence(bool Apply, bool Real);
 207         void HandleAuraModIncreaseMaxHealth(bool apply, bool Real);
 208         void HandleAuraModExpertise(bool apply, bool Real);
 209         void HandleForceMoveForward(bool apply, bool Real);
 210         void HandleAuraModResistenceOfStatPercent(bool apply, bool Real);
 211         void HandleAuraPowerBurn(bool apply, bool Real);
 212         void HandleSchoolAbsorb(bool apply, bool Real);
 213         void HandlePreventFleeing(bool apply, bool Real);
 214         void HandleManaShield(bool apply, bool Real);
 215         void HandleArenaPreparation(bool apply, bool Real);
 216         void HandleAuraConvertRune(bool apply, bool Real);
 217         void HandleAuraIncreaseBaseHealthPercent(bool Apply, bool Real);
 218         void HandleNoReagentUseAura(bool Apply, bool Real);
 219
 220         virtual ~Aura();
 221
 222         void SetModifier(AuraType t, int32 a, uint32 pt, int32 miscValue);
 223         Modifier* GetModifier() {return &m_modifier;}
 224         int32 GetMiscValue() {return m_spellProto->EffectMiscValue[m_effIndex];}
 225         int32 GetMiscBValue() {return m_spellProto->EffectMiscValueB[m_effIndex];}
 226
 227         SpellEntry const* GetSpellProto() const { return m_spellProto; }
 228         uint32 GetId() const{ return m_spellProto->Id; }
 229         uint64 GetCastItemGUID() const { return m_castItemGuid; }
 230         uint32 GetEffIndex() const{ return m_effIndex; }
 231         int32 GetBasePoints() const { return m_currentBasePoints; }
 232
 233         int32 GetAuraMaxDuration() const { return m_maxduration; }
 234         void SetAuraMaxDuration(int32 duration) { m_maxduration = duration; }
 235         int32 GetAuraDuration() const { return m_duration; }
 236         void SetAuraDuration(int32 duration) { m_duration = duration; }
 237         time_t GetAuraApplyTime() { return m_applyTime; }
 238
 239         SpellModifier *getAuraSpellMod() {return m_spellmod; }
 240
 241         uint64 const& GetCasterGUID() const { return m_caster_guid; }
 242         Unit* GetCaster() const;
 243         Unit* GetTarget() const { return m_target; }
 244         void SetTarget(Unit* target) { m_target = target; }
 245         void SetLoadedState(uint64 caster_guid,int32 damage,int32 maxduration,int32 duration,int32 charges)
 246         {
 247             m_caster_guid = caster_guid;
 248             m_modifier.m_amount = damage;
 249             m_maxduration = maxduration;
 250             m_duration = duration;
 251             m_procCharges = charges;
 252         }
 253
 254         uint8 GetAuraSlot() const { return m_auraSlot; }
 255         void SetAuraSlot(uint8 slot) { m_auraSlot = slot; }
 256         uint8 GetAuraFlags() const { return m_auraFlags; }
 257         void SetAuraFlags(uint8 flags) { m_auraFlags = flags; }
 258         uint8 GetAuraLevel() const { return m_auraLevel; }
 259         void SetAuraLevel(uint8 level) { m_auraLevel = level; }
 260         uint8 GetAuraCharges() const { return m_procCharges; }
 261         void SetAuraCharges(uint8 charges)
 262         {
 263             if (m_procCharges == charges)
 264                 return;
 265             m_procCharges = charges;
 266             SendAuraUpdate(false);
 267         }
 268         bool DropAuraCharge() // return true if last charge dropped
 269         {
 270             if (m_procCharges == 0)
 271                 return false;
 272             m_procCharges--;
 273             SendAuraUpdate(false);
 274             return m_procCharges == 0;
 275         }
 276
 277         void SetAura(bool remove) { m_target->SetVisibleAura(m_auraSlot, remove ? 0 : GetId()); }
 278         void SendAuraUpdate(bool remove);
 279
 280         int8 GetStackAmount() {return m_stackAmount;}
 281         void SetStackAmount(uint8 num);
 282         bool modStackAmount(int32 num); // return true if last charge dropped
 283         void RefreshAura();
 284
 285         bool IsPositive() { return m_positive; }
 286         void SetNegative() { m_positive = false; }
 287         void SetPositive() { m_positive = true; }
 288
 289         bool IsPermanent() const { return m_permanent; }
 290         bool IsAreaAura() const { return m_isAreaAura; }
 291         bool IsPeriodic() const { return m_isPeriodic; }
 292         bool IsPassive() const { return m_isPassive; }
 293         bool IsPersistent() const { return m_isPersistent; }
 294         bool IsDeathPersistent() const { return m_isDeathPersist; }
 295         bool IsRemovedOnShapeLost() const { return m_isRemovedOnShapeLost; }
 296         bool IsInUse() const { return m_in_use;}
 297
 298         virtual void Update(uint32 diff);
 299         void ApplyModifier(bool apply, bool Real = false);
 300
 301         void _AddAura();
 302         void _RemoveAura();
 303
 304         bool IsUpdated() { return m_updated; }
 305         void SetUpdated(bool val) { m_updated = val; }
 306         void SetRemoveMode(AuraRemoveMode mode) { m_removeMode = mode; }
 307
 308         virtual Unit* GetTriggerTarget() const { return m_target; }
 309
 310         // add/remove SPELL_AURA_MOD_SHAPESHIFT (36) linked auras
 311         void HandleShapeshiftBoosts(bool apply);
 312
 313         // Allow Apply Aura Handler to modify and access m_AuraDRGroup
 314         void setDiminishGroup(DiminishingGroup group) { m_AuraDRGroup = group; }
 315         DiminishingGroup getDiminishGroup() const { return m_AuraDRGroup; }
 316
 317         void TriggerSpell();
 318         void TriggerSpellWithValue();
 319         void PeriodicTick();
 320         void PeriodicDummyTick();
 321
 322         uint32 const *getAuraSpellClassMask() const { return  m_spellProto->EffectSpellClassMaskA + m_effIndex * 3; }
 323         bool isAffectedOnSpell(SpellEntry const *spell) const;
 324     protected:
 325         Aura(SpellEntry const* spellproto, uint32 eff, int32 *currentBasePoints, Unit *target, Unit *caster = NULL, Item* castItem = NULL);
 326
 327         Modifier m_modifier;
 328         SpellModifier *m_spellmod;
 329
 330         SpellEntry const *m_spellProto;
 331         Unit* m_target;
 332         uint64 m_caster_guid;
 333         uint64 m_castItemGuid;                              // it is NOT safe to keep a pointer to the item because it may get deleted
 334         time_t m_applyTime;
 335
 336         int32 m_currentBasePoints;                          // cache SpellEntry::EffectBasePoints and use for set custom base points
 337         int32 m_maxduration;                                // Max aura duration
 338         int32 m_duration;                                   // Current time
 339         int32 m_timeCla;                                    // Timer for power per sec calcultion
 340         int32 m_periodicTimer;                              // Timer for periodic auras
 341
 342         AuraRemoveMode m_removeMode:8;                      // Store info for know remove aura reason
 343         DiminishingGroup m_AuraDRGroup:8;                   // Diminishing
 344
 345         uint8 m_effIndex;                                   // Aura effect index in spell
 346         uint8 m_auraSlot;                                   // Aura slot on unit (for show in client)
 347         uint8 m_auraFlags;                                  // Aura info flag (for send data to client)
 348         uint8 m_auraLevel;                                  // Aura level (store caster level for correct show level dep amount)
 349         uint8 m_procCharges;                                // Aura charges (0 for infinite)
 350         uint8 m_stackAmount;                                // Aura stack amount
 351
 352         bool m_positive:1;
 353         bool m_permanent:1;
 354         bool m_isPeriodic:1;
 355         bool m_isAreaAura:1;
 356         bool m_isPassive:1;
 357         bool m_isPersistent:1;
 358         bool m_isDeathPersist:1;
 359         bool m_isRemovedOnShapeLost:1;
 360         bool m_updated:1;                                   // Prevent remove aura by stack if set
 361         bool m_in_use:1;                                    // true while in Aura::ApplyModifier call
 362
 363     private:
 364         void CleanupTriggeredSpells();
 365 };
 366
 367 class MANGOS_DLL_SPEC AreaAura : public Aura
 368 {
 369     public:
 370         AreaAura(SpellEntry const* spellproto, uint32 eff, int32 *currentBasePoints, Unit *target, Unit *caster = NULL, Item* castItem = NULL);
 371         ~AreaAura();
 372         void Update(uint32 diff);
 373     private:
 374         float m_radius;
 375         AreaAuraType m_areaAuraType;
 376 };
 377
 378 class MANGOS_DLL_SPEC PersistentAreaAura : public Aura
 379 {
 380     public:
 381         PersistentAreaAura(SpellEntry const* spellproto, uint32 eff, int32 *currentBasePoints, Unit *target, Unit *caster = NULL, Item* castItem = NULL);
 382         ~PersistentAreaAura();
 383         void Update(uint32 diff);
 384 };
 385
 386 class MANGOS_DLL_SPEC SingleEnemyTargetAura : public Aura
 387 {
 388     friend Aura* CreateAura(SpellEntry const* spellproto, uint32 eff, int32 *currentBasePoints, Unit *target, Unit *caster, Item* castItem);
 389
 390     public:
 391         ~SingleEnemyTargetAura();
 392         Unit* GetTriggerTarget() const;
 393
 394     protected:
 395         SingleEnemyTargetAura(SpellEntry const* spellproto, uint32 eff, int32 *currentBasePoints, Unit *target, Unit *caster  = NULL, Item* castItem = NULL);
 396         uint64 m_casters_target_guid;
 397 };
 398
 399 Aura* CreateAura(SpellEntry const* spellproto, uint32 eff, int32 *currentBasePoints, Unit *target, Unit *caster = NULL, Item* castItem = NULL);
 400 #endif