56FDC0.c

signed int __cdecl PH_SMSG_SUPERCEDED_SPELL(int a1) // Actually a ptr to struct that 6BD0A0 creates
{
  int oldSpellId; // ebx@1
  int newSpellId; // esi@1
  __int64 v3; // qax@4
  CGPlayer_C *currPlr; // edi@4
  void *v5; // esi@7
  int v7; // ecx@9
  unsigned int v8; // eax@9
  unsigned int v9; // edi@15
  unsigned int v10; // ecx@16
  char *v11; // eax@21

  oldSpellId = *(a1 + 16);
  newSpellId = *(a1 + 20);
  if ( SFile::IsStreamingMode() && !__uncaught_exception() )
    sub_90FBF0(newSpellId, 0);
  v3 = ClntObjMgrGetActivePlayer();
  currPlr = ClntObjMgrObjectPtr(
              v3,
              TYPEMASK_PLAYER,
              "d:\\buildserver\\wow\\4\\work\\wow-code\\branches\\wow-patch-4_3_4-branch\\wow\\source\\object\\objectclient\\Player_C.h",
              178);
  if ( currPlr )
  {
    sub_958AD0(oldSpellId, newSpellId); // Does macro vodoo
    sub_919860(oldSpellId, newSpellId);
    CGPlayer_C::RemoveSpell(oldSpellId, 1);
    CGPlayer_C::AddKnownSpell(newSpellId, 0, 0, 0);
    sub_5C28E0(currPlr); // If old spell aura is active, update id with new
    if ( newSpellId >= g_SpellDB.minIndex )
    {
      if ( newSpellId <= g_SpellDB.maxIndex )
      {
        v5 = g_SpellDB.Rows[newSpellId - g_SpellDB.minIndex];
        if ( v5 )
        {
          sub_55AFE0(v5);
          sub_9BA770(); // Triggers lua event #297 and does more black magic
          return 1;
        }
      }
    }
  }
  else
  {
    v7 = dword_DD50B0;
    v8 = 0;
    if ( dword_DD50B0 )
    {
      while ( *(dword_DD50B4 + 2 * v8) != oldSpellId )
      {
        ++v8;
        if ( v8 >= dword_DD50B0 )
          goto LABEL_14;
      }
      *(dword_DD50B4 + 2 * v8) = newSpellId;
      v7 = dword_DD50B0;
    }
LABEL_14:
    if ( v8 == v7 )
    {
      v9 = v7 + 1;
      if ( v7 + 1 > dword_DD50AC )
      {
        v10 = dword_DD50B8;
        if ( !dword_DD50B8 )
          v10 = sub_76AAC0(v9);
        if ( v9 % v10 )
          v9 += v10 - v9 % v10;
        sub_554E50(v9);
        v7 = dword_DD50B0;
      }
      v11 = dword_DD50B4 + 8 * v7;
      dword_DD50B0 = v7 + 1;
      *v11 = newSpellId; // Interesting, call below means spell is stored as u16 even though it aint fitting
      *(v11 + 2) = 0;
    }
  }
  sub_9BA770();
  return 1;
}

6BD0A0.c

void *__thiscall sub_6BD0A0(void *this, int a2, int a3, int a4, int a5)
{
  int v5; // edx@1
  void *v6; // esi@1
  int v7; // ecx@1

  v5 = a5;
  v6 = this;
  v7 = a3;
  *(v6 + 1) = a2;
  *(v6 + 2) = v7;
  *(v6 + 3) = v5;
  *v6 = &off_BC1F98; // gets passed to function 56fdc0
  a2 = 0;
  CDataStore::GetInt32(&a2);
  *(v6 + 5) = a2;
  a2 = 0;
  CDataStore::GetInt32(&a2);
  *(v6 + 4) = a2;
  return v6;
}

919860.c

int __cdecl sub_919860(int a1, int a2)
{
  sub_9143D0(a1, 1); // Vodoo
  return sub_918680(a2, 1, a1); // GUI Vodoo
}