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