src/game/SpellHandler.cpp

   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
  19 #include "Common.h"
  20 #include "DBCStores.h"
  21 #include "WorldPacket.h"
  22 #include "WorldSession.h"
  23 #include "ObjectMgr.h"
  24 #include "SpellMgr.h"
  25 #include "Log.h"
  26 #include "Opcodes.h"
  27 #include "Spell.h"
  28 #include "ScriptCalls.h"
  29 #include "Totem.h"
  30
  31 void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
  32 {
  33     // TODO: add targets.read() check
  34     CHECK_PACKET_SIZE(recvPacket,1+1+1+4+8+4+1);
  35
  36     Player* pUser = _player;
  37
  38     // ignore for remote control state
  39     if(pUser->m_mover != pUser)
  40         return;
  41
  42     uint8 bagIndex, slot;
  43     uint8 unk_flags;                                        // flags (if 0x02 - some additional data are received)
  44     uint8 cast_count;                                       // next cast if exists (single or not)
  45     uint64 item_guid;
  46     uint32 glyphIndex;                                      // something to do with glyphs?
  47     uint32 spellid;                                         // casted spell id
  48
  49     recvPacket >> bagIndex >> slot >> cast_count >> spellid >> item_guid >> glyphIndex >> unk_flags;
  50
  51     Item *pItem = pUser->GetItemByPos(bagIndex, slot);
  52     if(!pItem)
  53     {
  54         pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
  55         return;
  56     }
  57
  58     if(pItem->GetGUID() != item_guid)
  59     {
  60         pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
  61         return;
  62     }
  63
  64     sLog.outDetail("WORLD: CMSG_USE_ITEM packet, bagIndex: %u, slot: %u, cast_count: %u, spellid: %u, Item: %u, glyphIndex: %u, unk_flags: %u, data length = %i", bagIndex, slot, cast_count, spellid, pItem->GetEntry(), glyphIndex, unk_flags, (uint32)recvPacket.size());
  65
  66     ItemPrototype const *proto = pItem->GetProto();
  67     if(!proto)
  68     {
  69         pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
  70         return;
  71     }
  72
  73     // some item classes can be used only in equipped state
  74     if(proto->InventoryType != INVTYPE_NON_EQUIP && !pItem->IsEquipped())
  75     {
  76         pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
  77         return;
  78     }
  79
  80     uint8 msg = pUser->CanUseItem(pItem);
  81     if( msg != EQUIP_ERR_OK )
  82     {
  83         pUser->SendEquipError( msg, pItem, NULL );
  84         return;
  85     }
  86
  87     // only allow conjured consumable, bandage, poisons (all should have the 2^21 item flag set in DB)
  88     if( proto->Class == ITEM_CLASS_CONSUMABLE &&
  89         !(proto->Flags & ITEM_FLAGS_USEABLE_IN_ARENA) &&
  90         pUser->InArena())
  91     {
  92         pUser->SendEquipError(EQUIP_ERR_NOT_DURING_ARENA_MATCH,pItem,NULL);
  93         return;
  94     }
  95
  96     if (pUser->isInCombat())
  97     {
  98         for(int i = 0; i < MAX_ITEM_PROTO_SPELLS; ++i)
  99         {
 100             if (SpellEntry const *spellInfo = sSpellStore.LookupEntry(proto->Spells[i].SpellId))
 101             {
 102                 if (IsNonCombatSpell(spellInfo))
 103                 {
 104                     pUser->SendEquipError(EQUIP_ERR_NOT_IN_COMBAT,pItem,NULL);
 105                     return;
 106                 }
 107             }
 108         }
 109     }
 110
 111     // check also  BIND_WHEN_PICKED_UP and BIND_QUEST_ITEM for .additem or .additemset case by GM (not binded at adding to inventory)
 112     if( pItem->GetProto()->Bonding == BIND_WHEN_USE || pItem->GetProto()->Bonding == BIND_WHEN_PICKED_UP || pItem->GetProto()->Bonding == BIND_QUEST_ITEM )
 113     {
 114         if (!pItem->IsSoulBound())
 115         {
 116             pItem->SetState(ITEM_CHANGED, pUser);
 117             pItem->SetBinding( true );
 118         }
 119     }
 120
 121     SpellCastTargets targets;
 122     if(!targets.read(&recvPacket, pUser))
 123         return;
 124
 125     //Note: If script stop casting it must send appropriate data to client to prevent stuck item in gray state.
 126     if(!Script->ItemUse(pUser,pItem,targets))
 127     {
 128         // no script or script not process request by self
 129         pUser->CastItemUseSpell(pItem,targets,cast_count,glyphIndex);
 130     }
 131 }
 132
 133 #define OPEN_CHEST 11437
 134 #define OPEN_SAFE 11535
 135 #define OPEN_CAGE 11792
 136 #define OPEN_BOOTY_CHEST 5107
 137 #define OPEN_STRONGBOX 8517
 138
 139 void WorldSession::HandleOpenItemOpcode(WorldPacket& recvPacket)
 140 {
 141     CHECK_PACKET_SIZE(recvPacket,1+1);
 142
 143     sLog.outDetail("WORLD: CMSG_OPEN_ITEM packet, data length = %i",(uint32)recvPacket.size());
 144
 145     Player* pUser = _player;
 146
 147     // ignore for remote control state
 148     if(pUser->m_mover != pUser)
 149         return;
 150
 151     uint8 bagIndex, slot;
 152
 153     recvPacket >> bagIndex >> slot;
 154
 155     sLog.outDetail("bagIndex: %u, slot: %u",bagIndex,slot);
 156
 157     Item *pItem = pUser->GetItemByPos(bagIndex, slot);
 158     if(!pItem)
 159     {
 160         pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );
 161         return;
 162     }
 163
 164     ItemPrototype const *proto = pItem->GetProto();
 165     if(!proto)
 166     {
 167         pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, pItem, NULL );
 168         return;
 169     }
 170
 171     // locked item
 172     uint32 lockId = proto->LockID;
 173     if(lockId)
 174     {
 175         LockEntry const *lockInfo = sLockStore.LookupEntry(lockId);
 176
 177         if (!lockInfo)
 178         {
 179             pUser->SendEquipError(EQUIP_ERR_ITEM_LOCKED, pItem, NULL );
 180             sLog.outError( "WORLD::OpenItem: item [guid = %u] has an unknown lockId: %u!", pItem->GetGUIDLow() , lockId);
 181             return;
 182         }
 183
 184         // required picklocking
 185         if(lockInfo->Skill[1] || lockInfo->Skill[0])
 186         {
 187             pUser->SendEquipError(EQUIP_ERR_ITEM_LOCKED, pItem, NULL );
 188             return;
 189         }
 190     }
 191
 192     if(pItem->HasFlag(ITEM_FIELD_FLAGS, ITEM_FLAGS_WRAPPED))// wrapped?
 193     {
 194         QueryResult *result = CharacterDatabase.PQuery("SELECT entry, flags FROM character_gifts WHERE item_guid = '%u'", pItem->GetGUIDLow());
 195         if (result)
 196         {
 197             Field *fields = result->Fetch();
 198             uint32 entry = fields[0].GetUInt32();
 199             uint32 flags = fields[1].GetUInt32();
 200
 201             pItem->SetUInt64Value(ITEM_FIELD_GIFTCREATOR, 0);
 202             pItem->SetEntry(entry);
 203             pItem->SetUInt32Value(ITEM_FIELD_FLAGS, flags);
 204             pItem->SetState(ITEM_CHANGED, pUser);
 205             delete result;
 206         }
 207         else
 208         {
 209             sLog.outError("Wrapped item %u don't have record in character_gifts table and will deleted", pItem->GetGUIDLow());
 210             pUser->DestroyItem(pItem->GetBagSlot(), pItem->GetSlot(), true);
 211             return;
 212         }
 213         CharacterDatabase.PExecute("DELETE FROM character_gifts WHERE item_guid = '%u'", pItem->GetGUIDLow());
 214     }
 215     else
 216         pUser->SendLoot(pItem->GetGUID(),LOOT_CORPSE);
 217 }
 218
 219 void WorldSession::HandleGameObjectUseOpcode( WorldPacket & recv_data )
 220 {
 221     CHECK_PACKET_SIZE(recv_data, 8);
 222
 223     uint64 guid;
 224
 225     recv_data >> guid;
 226
 227     sLog.outDebug( "WORLD: Recvd CMSG_GAMEOBJ_USE Message [guid=%u]", GUID_LOPART(guid));
 228
 229     // ignore for remote control state
 230     if(_player->m_mover != _player)
 231         return;
 232
 233     GameObject *obj = GetPlayer()->GetMap()->GetGameObject(guid);
 234
 235     if(!obj)
 236         return;
 237
 238     if (Script->GOHello(_player, obj))
 239         return;
 240
 241     obj->Use(_player);
 242 }
 243
 244 void WorldSession::HandleGameobjectReportUse(WorldPacket& recvPacket)
 245 {
 246     CHECK_PACKET_SIZE(recvPacket,8);
 247
 248     uint64 guid;
 249     recvPacket >> guid;
 250
 251     sLog.outDebug( "WORLD: Recvd CMSG_GAMEOBJ_REPORT_USE Message [in game guid: %u]", GUID_LOPART(guid));
 252
 253     // ignore for remote control state
 254     if(_player->m_mover != _player)
 255         return;
 256
 257     GameObject* go = GetPlayer()->GetMap()->GetGameObject(guid);
 258     if(!go)
 259         return;
 260
 261     if(!go->IsWithinDistInMap(_player,INTERACTION_DISTANCE))
 262         return;
 263
 264     _player->GetAchievementMgr().UpdateAchievementCriteria(ACHIEVEMENT_CRITERIA_TYPE_USE_GAMEOBJECT, go->GetEntry());
 265 }
 266
 267 void WorldSession::HandleCastSpellOpcode(WorldPacket& recvPacket)
 268 {
 269     CHECK_PACKET_SIZE(recvPacket,1+4+1);
 270
 271     uint32 spellId;
 272     uint8  cast_count, unk_flags;
 273     recvPacket >> cast_count;
 274     recvPacket >> spellId;
 275     recvPacket >> unk_flags;                                // flags (if 0x02 - some additional data are received)
 276
 277     // ignore for remote control state (for player case)
 278     Unit* mover = _player->m_mover;
 279     if(mover != _player && mover->GetTypeId()==TYPEID_PLAYER)
 280         return;
 281
 282     sLog.outDebug("WORLD: got cast spell packet, spellId - %u, cast_count: %u, unk_flags %u, data length = %i",
 283         spellId, cast_count, unk_flags, (uint32)recvPacket.size());
 284
 285     SpellEntry const *spellInfo = sSpellStore.LookupEntry(spellId );
 286
 287     if(!spellInfo)
 288     {
 289         sLog.outError("WORLD: unknown spell id %u", spellId);
 290         return;
 291     }
 292
 293     if(mover->GetTypeId()==TYPEID_PLAYER)
 294     {
 295         // not have spell in spellbook or spell passive and not casted by client
 296         if (!((Player*)mover)->HasActiveSpell (spellId) || IsPassiveSpell(spellId) )
 297         {
 298             //cheater? kick? ban?
 299             return;
 300         }
 301     }
 302     else
 303     {
 304         // not have spell in spellbook or spell passive and not casted by client
 305         if (!((Creature*)mover)->HasSpell(spellId) || IsPassiveSpell(spellId) )
 306         {
 307             //cheater? kick? ban?
 308             return;
 309         }
 310     }
 311
 312     // client provided targets
 313     SpellCastTargets targets;
 314     if(!targets.read(&recvPacket,mover))
 315         return;
 316
 317     // auto-selection buff level base at target level (in spellInfo)
 318     if(targets.getUnitTarget())
 319     {
 320         SpellEntry const *actualSpellInfo = spellmgr.SelectAuraRankForPlayerLevel(spellInfo,targets.getUnitTarget()->getLevel());
 321
 322         // if rank not found then function return NULL but in explicit cast case original spell can be casted and later failed with appropriate error message
 323         if(actualSpellInfo)
 324             spellInfo = actualSpellInfo;
 325     }
 326
 327     Spell *spell = new Spell(mover, spellInfo, false);
 328     spell->m_cast_count = cast_count;                       // set count of casts
 329     spell->prepare(&targets);
 330 }
 331
 332 void WorldSession::HandleCancelCastOpcode(WorldPacket& recvPacket)
 333 {
 334     CHECK_PACKET_SIZE(recvPacket,5);
 335
 336     // ignore for remote control state (for player case)
 337     Unit* mover = _player->m_mover;
 338     if(mover != _player && mover->GetTypeId()==TYPEID_PLAYER)
 339         return;
 340
 341     // increments with every CANCEL packet, don't use for now
 342     uint8 counter;
 343     uint32 spellId;
 344     recvPacket >> counter;
 345     recvPacket >> spellId;
 346
 347     //FIXME: hack, ignore unexpected client cancel Deadly Throw cast
 348     if(spellId==26679)
 349         return;
 350
 351     if(mover->IsNonMeleeSpellCasted(false))
 352         mover->InterruptNonMeleeSpells(false,spellId);
 353 }
 354
 355 void WorldSession::HandleCancelAuraOpcode( WorldPacket& recvPacket)
 356 {
 357     CHECK_PACKET_SIZE(recvPacket,4);
 358
 359     // ignore for remote control state
 360     if(_player->m_mover != _player)
 361         return;
 362
 363     uint32 spellId;
 364     recvPacket >> spellId;
 365
 366     SpellEntry const *spellInfo = sSpellStore.LookupEntry(spellId);
 367     if (!spellInfo)
 368         return;
 369
 370     // not allow remove non positive spells and spells with attr SPELL_ATTR_CANT_CANCEL
 371     if(!IsPositiveSpell(spellId) || (spellInfo->Attributes & SPELL_ATTR_CANT_CANCEL))
 372         return;
 373
 374     // channeled spell case (it currently casted then)
 375     if (IsChanneledSpell(spellInfo))
 376     {
 377         if (_player->m_currentSpells[CURRENT_CHANNELED_SPELL] &&
 378             _player->m_currentSpells[CURRENT_CHANNELED_SPELL]->m_spellInfo->Id==spellId)
 379             _player->InterruptSpell(CURRENT_CHANNELED_SPELL);
 380         return;
 381     }
 382
 383     // non channeled case
 384     _player->RemoveAurasDueToSpellByCancel(spellId);
 385 }
 386
 387 void WorldSession::HandlePetCancelAuraOpcode( WorldPacket& recvPacket)
 388 {
 389     CHECK_PACKET_SIZE(recvPacket, 8+4);
 390
 391     // ignore for remote control state
 392     if(_player->m_mover != _player)
 393         return;
 394
 395     uint64 guid;
 396     uint32 spellId;
 397
 398     recvPacket >> guid;
 399     recvPacket >> spellId;
 400
 401     SpellEntry const *spellInfo = sSpellStore.LookupEntry(spellId );
 402     if(!spellInfo)
 403     {
 404         sLog.outError("WORLD: unknown PET spell id %u", spellId);
 405         return;
 406     }
 407
 408     Creature* pet=ObjectAccessor::GetCreatureOrPetOrVehicle(*_player,guid);
 409
 410     if(!pet)
 411     {
 412         sLog.outError( "Pet %u not exist.", uint32(GUID_LOPART(guid)) );
 413         return;
 414     }
 415
 416     if(pet != GetPlayer()->GetPet() && pet != GetPlayer()->GetCharm())
 417     {
 418         sLog.outError( "HandlePetCancelAura.Pet %u isn't pet of player %s", uint32(GUID_LOPART(guid)),GetPlayer()->GetName() );
 419         return;
 420     }
 421
 422     if(!pet->isAlive())
 423     {
 424         pet->SendPetActionFeedback(FEEDBACK_PET_DEAD);
 425         return;
 426     }
 427
 428     pet->RemoveAurasDueToSpell(spellId);
 429
 430     pet->AddCreatureSpellCooldown(spellId);
 431 }
 432
 433 void WorldSession::HandleCancelGrowthAuraOpcode( WorldPacket& /*recvPacket*/)
 434 {
 435     // nothing do
 436 }
 437
 438 void WorldSession::HandleCancelAutoRepeatSpellOpcode( WorldPacket& /*recvPacket*/)
 439 {
 440     // may be better send SMSG_CANCEL_AUTO_REPEAT?
 441     // cancel and prepare for deleting
 442     _player->m_mover->InterruptSpell(CURRENT_AUTOREPEAT_SPELL);
 443 }
 444
 445 /// \todo Complete HandleCancelChanneling function
 446 void WorldSession::HandleCancelChanneling( WorldPacket & /*recv_data */)
 447 {
 448     /*
 449         CHECK_PACKET_SIZE(recv_data, 4);
 450
 451         uint32 spellid;
 452         recv_data >> spellid;
 453     */
 454 }
 455
 456 void WorldSession::HandleTotemDestroy( WorldPacket& recvPacket)
 457 {
 458     CHECK_PACKET_SIZE(recvPacket, 1);
 459
 460     // ignore for remote control state
 461     if(_player->m_mover != _player)
 462         return;
 463
 464     uint8 slotId;
 465
 466     recvPacket >> slotId;
 467
 468     if (slotId >= MAX_TOTEM)
 469         return;
 470
 471     if(!_player->m_TotemSlot[slotId])
 472         return;
 473
 474     Creature* totem = GetPlayer()->GetMap()->GetCreature(_player->m_TotemSlot[slotId]);
 475     if(totem && totem->isTotem())
 476         ((Totem*)totem)->UnSummon();
 477 }
 478
 479 void WorldSession::HandleSelfResOpcode( WorldPacket & /*recv_data*/ )
 480 {
 481     sLog.outDebug("WORLD: CMSG_SELF_RES");                  // empty opcode
 482
 483     if(_player->GetUInt32Value(PLAYER_SELF_RES_SPELL))
 484     {
 485         SpellEntry const *spellInfo = sSpellStore.LookupEntry(_player->GetUInt32Value(PLAYER_SELF_RES_SPELL));
 486         if(spellInfo)
 487             _player->CastSpell(_player,spellInfo,false,0);
 488
 489         _player->SetUInt32Value(PLAYER_SELF_RES_SPELL, 0);
 490     }
 491 }