src/game/SkillHandler.cpp

   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 #include "Common.h"
  20 #include "Database/DatabaseEnv.h"
  21 #include "Opcodes.h"
  22 #include "Log.h"
  23 #include "Player.h"
  24 #include "World.h"
  25 #include "WorldPacket.h"
  26 #include "WorldSession.h"
  27 #include "ObjectAccessor.h"
  28 #include "UpdateMask.h"
  29 #include "SpellAuras.h"
  30
  31 void WorldSession::HandleLearnTalentOpcode( WorldPacket & recv_data )
  32 {
  33     CHECK_PACKET_SIZE(recv_data,4+4);
  34
  35     uint32 talent_id, requested_rank;
  36     recv_data >> talent_id >> requested_rank;
  37
  38     uint32 CurTalentPoints =  GetPlayer()->GetFreeTalentPoints();
  39
  40     if(CurTalentPoints == 0)
  41         return;
  42
  43     if (requested_rank > 4)
  44         return;
  45
  46     TalentEntry const *talentInfo = sTalentStore.LookupEntry( talent_id );
  47
  48     if(!talentInfo)
  49         return;
  50
  51     TalentTabEntry const *talentTabInfo = sTalentTabStore.LookupEntry( talentInfo->TalentTab );
  52
  53     if(!talentTabInfo)
  54         return;
  55
  56     Player * player = GetPlayer();
  57
  58     // prevent learn talent for different class (cheating)
  59     if( (player->getClassMask() & talentTabInfo->ClassMask) == 0 )
  60         return;
  61
  62     // prevent skip talent ranks (cheating)
  63     if(requested_rank > 0 && !player->HasSpell(talentInfo->RankID[requested_rank-1]))
  64         return;
  65
  66     // Check if it requires another talent
  67     if (talentInfo->DependsOn > 0)
  68     {
  69         if(TalentEntry const *depTalentInfo = sTalentStore.LookupEntry(talentInfo->DependsOn))
  70         {
  71             bool hasEnoughRank = false;
  72             for (int i = talentInfo->DependsOnRank; i <= 4; i++)
  73             {
  74                 if (depTalentInfo->RankID[i] != 0)
  75                     if (player->HasSpell(depTalentInfo->RankID[i]))
  76                         hasEnoughRank = true;
  77             }
  78             if (!hasEnoughRank)
  79                 return;
  80         }
  81     }
  82
  83     // Find out how many points we have in this field
  84     uint32 spentPoints = 0;
  85
  86     uint32 tTab = talentInfo->TalentTab;
  87     if (talentInfo->Row > 0)
  88     {
  89         unsigned int numRows = sTalentStore.GetNumRows();
  90         for (unsigned int i = 0; i < numRows; i++)          // Loop through all talents.
  91         {
  92             // Someday, someone needs to revamp
  93             const TalentEntry *tmpTalent = sTalentStore.LookupEntry(i);
  94             if (tmpTalent)                                  // the way talents are tracked
  95             {
  96                 if (tmpTalent->TalentTab == tTab)
  97                 {
  98                     for (int j = 0; j <= 4; j++)
  99                     {
 100                         if (tmpTalent->RankID[j] != 0)
 101                         {
 102                             if (player->HasSpell(tmpTalent->RankID[j]))
 103                             {
 104                                 spentPoints += j + 1;
 105                             }
 106                         }
 107                     }
 108                 }
 109             }
 110         }
 111     }
 112
 113     // not have required min points spent in talent tree
 114     if(spentPoints < (talentInfo->Row * 5))
 115         return;
 116
 117     // spell not set in talent.dbc
 118     uint32 spellid = talentInfo->RankID[requested_rank];
 119     if( spellid == 0 )
 120     {
 121         sLog.outError("Talent.dbc have for talent: %u Rank: %u spell id = 0", talent_id, requested_rank);
 122         return;
 123     }
 124
 125     // already known
 126     if(GetPlayer( )->HasSpell(spellid))
 127         return;
 128
 129     // learn! (other talent ranks will unlearned at learning)
 130     GetPlayer( )->learnSpell(spellid);
 131     sLog.outDetail("TalentID: %u Rank: %u Spell: %u\n", talent_id, requested_rank, spellid);
 132
 133     // update free talent points
 134     GetPlayer()->SetFreeTalentPoints(CurTalentPoints - 1);
 135 }
 136
 137 void WorldSession::HandleTalentWipeOpcode( WorldPacket & recv_data )
 138 {
 139     CHECK_PACKET_SIZE(recv_data,8);
 140
 141     sLog.outDetail("MSG_TALENT_WIPE_CONFIRM");
 142     uint64 guid;
 143     recv_data >> guid;
 144
 145     Creature *unit = ObjectAccessor::GetNPCIfCanInteractWith(*_player, guid,UNIT_NPC_FLAG_TRAINER);
 146     if (!unit)
 147     {
 148         sLog.outDebug( "WORLD: HandleTalentWipeOpcode - Unit (GUID: %u) not found or you can't interact with him.", uint32(GUID_LOPART(guid)) );
 149         return;
 150     }
 151
 152     // remove fake death
 153     if(GetPlayer()->hasUnitState(UNIT_STAT_DIED))
 154         GetPlayer()->RemoveSpellsCausingAura(SPELL_AURA_FEIGN_DEATH);
 155
 156     if(!(_player->resetTalents()))
 157     {
 158         WorldPacket data( MSG_TALENT_WIPE_CONFIRM, 8+4);    //you have not any talent
 159         data << uint64(0);
 160         data << uint32(0);
 161         SendPacket( &data );
 162         return;
 163     }
 164
 165     unit->CastSpell(_player, 14867, true);                  //spell: "Untalent Visual Effect"
 166 }
 167
 168 void WorldSession::HandleUnlearnSkillOpcode(WorldPacket & recv_data)
 169 {
 170     CHECK_PACKET_SIZE(recv_data,4);
 171
 172     uint32 skill_id;
 173     recv_data >> skill_id;
 174     GetPlayer()->SetSkill(skill_id, 0, 0);
 175 }