Read NPCObject Name.

**fusspawn** · 02-08-2010

Hi There,

Im trying to work on my bot framework, things are going awesome, untill i try and query the name of an NPCObject.

for the most part my method returns a empty string "";

but on a rare occasion it returns what i can only assume is some kind of texture name.

What im after is the Screen name of the mob. ie "Kobold worker" or "Infected Wolf" rather than "InfectedWolfSkin2" or some other unrelated name.

my method.

Code:

        uint UnitNameoffset1 = 0x968;
        uint UnitNameoffset2 = 0x5c;
        public string Name
        {
            get
            {
                try
                {
                    uint a = MemoryUtils.Reader.ReadUInt(BaseAddress + UnitNameoffset1);
                    uint b = MemoryUtils.Reader.ReadUInt(a + UnitNameoffset2);
                    return MemoryUtils.ReadUTF8String(b, 0x60); // dont think anything is larger than 60 chars?
                }
                catch (Exception E)
                {
                    return "UNKNOWN";
                }
            }
        }

ReadUTF8String

Code:

        public static string ReadUTF8String(uint Address, int Length)
        {

            byte[] buffer = Reader.ReadBytes(Address, Length);

            string ret = Encoding.UTF8.GetString(buffer);

            if (ret.IndexOf('\0') != -1)
            {
                ret = ret.Remove(ret.IndexOf('\0'));
            }

            return ret;
        }

is this how i would go about doing this or am i just going mad?

**fusspawn** · 02-08-2010

Would like to note, Never has this returned the NPC name? and i think those are the latest offsets. (at least it never fails a read call and returns "Unknown")

**~~JuJuBoSc~~** · 02-08-2010

Almost correct ^^

Code:

            UnitName1 = 0x964,                  // 3.3.2
            UnitName2 = 0x5C,                   // 3.3.2

**fusspawn** · 02-08-2010

Lame. Oh well not at home to test this but ill chuck ya rep if i can

**EmilyStrange** · 02-08-2010

Code that I use to read a unit's name:

Code:

public sealed class UnitOffset
{
    public const uint Name = 0x005C;
    public const uint X = 0x0798;
    public const uint Y = 0x079C;
    public const uint Z = 0x07A0;
    public const uint Rotation = 0x07A8;
    public const uint StringTable = 0x0964;
    public const uint CastingSpellID = 0x0A60;
    public const uint ChannelingSpellID = 0x0A80;
}

public string GetName()
{
    uint unitStringTablePtr = m_gameClient.MemoryEditor.ReadUInt(m_baseAddress + UnitOffset.StringTable);
    uint unitNamePtr = m_gameClient.MemoryEditor.ReadUInt(unitStringTablePtr + UnitOffset.Name);
    return m_gameClient.MemoryEditor.ReadASCIIString(unitNamePtr, WarcraftGameClient.MAX_STRING_LENGTH);
}

**MaiN** · 02-09-2010

Originally Posted by EmilyStrange

Code that I use to read a unit's name:

Code:

public sealed class UnitOffset
{
    public const uint Name = 0x005C;
    public const uint X = 0x0798;
    public const uint Y = 0x079C;
    public const uint Z = 0x07A0;
    public const uint Rotation = 0x07A8;
    public const uint StringTable = 0x0964;
    public const uint CastingSpellID = 0x0A60;
    public const uint ChannelingSpellID = 0x0A80;
}

public string GetName()
{
    uint unitStringTablePtr = m_gameClient.MemoryEditor.ReadUInt(m_baseAddress + UnitOffset.StringTable);
    uint unitNamePtr = m_gameClient.MemoryEditor.ReadUInt(unitStringTablePtr + UnitOffset.Name);
    return m_gameClient.MemoryEditor.ReadASCIIString(unitNamePtr, WarcraftGameClient.MAX_STRING_LENGTH);
}

This "StringTable", as you call it, is in fact just the cached information about the creature. It's the same as you get when you call DbCreatureCache_GetInfoBlockById.

Code:

struct CreatureCacheEntry
{
  byte Unk[4];
  char *SubName;
  char *IconName;
  DWORD TypeFlags;
  DWORD TypeID;
  DWORD FamilyID;
  DWORD Rank;
  DWORD GroupID;
  DWORD GroupID2;
  DWORD SpellDataID;
  DWORD ModelID1;
  DWORD ModelID2;
  DWORD ModelID3;
  float TexOriginX;
  float TexOriginY;
  byte RacialLeader;
  DWORD QuestItems[6];
  DWORD MovementID;
  char *Names[4];
};

Credits to Apoc for showing me the cache-unpack functions.

**fusspawn** · 02-09-2010

Originally Posted by MaiN

This "StringTable", as you call it, is in fact just the cached information about the creature. It's the same as you get when you call DbCreatureCache_GetInfoBlockById.

Code:

struct CreatureCacheEntry
{
  byte Unk[4];
  char *SubName;
  char *IconName;
  DWORD TypeFlags;
  DWORD TypeID;
  DWORD FamilyID;
  DWORD Rank;
  DWORD GroupID;
  DWORD GroupID2;
  DWORD SpellDataID;
  DWORD ModelID1;
  DWORD ModelID2;
  DWORD ModelID3;
  float TexOriginX;
  float TexOriginY;
  byte RacialLeader;
  DWORD QuestItems[6];
  DWORD MovementID;
  char *Names[4];
};

Credits to Apoc for showing me the cache-unpack functions.

Awesome, I ask one thing, and learn another, Thanks MaiN.

**EmilyStrange** · 02-09-2010

Originally Posted by MaiN

This "StringTable", as you call it, is in fact just the cached information about the creature. It's the same as you get when you call DbCreatureCache_GetInfoBlockById.

Thanks for that info. Not sure why I originally called the entry "StringTable" because as you rightly point out, it is obviously not. Time to refactor that constant name.

**ruzzichella** · 03-12-2010

how can i find the base address of an npc?

**SinnerG** · 03-12-2010

Btw, use Resharper (not free though) to refactor stuff fast

**Danne206** · 03-12-2010

Originally Posted by ruzzichella

how can i find the base address of an npc?

Search.
http://www.mmowned.com/forums/wow-me...e-objects.html
Might have something you'd like.

**XTZGZoReX** · 03-12-2010

@MaiN:

Code:

struct CreatureCache
{
  int Id;
  char *SubName;
  char *IconName;
  int TypeFlags;
  int Type;
  int Family;
  int Rank;
  int KillCredit1;
  int KillCredit2;
  int DisplayId1;
  int DisplayId2;
  int DisplayId3;
  int DisplayId4;
  float HpModifier;
  float MpModifier;
  char RacialLeader[4];
  int QuestItem[6];
  int MovementId;
  char Name[4][1024];
  char SubName[1024];
  char IconName[1024];
};

That's the structure last I checked. I think yours is pre-3.1.x?

Anyway, just re-checked again, seems to comply with 3.3.2.

**MaiN** · 03-12-2010

Originally Posted by XTZGZoReX

@MaiN:

Code:

struct CreatureCache
{
  int Id;
  char *SubName;
  char *IconName;
  int TypeFlags;
  int Type;
  int Family;
  int Rank;
  int KillCredit1;
  int KillCredit2;
  int DisplayId1;
  int DisplayId2;
  int DisplayId3;
  int DisplayId4;
  float HpModifier;
  float MpModifier;
  char RacialLeader[4];
  int QuestItem[6];
  int MovementId;
  char Name[4][1024];
  char SubName[1024];
  char IconName[1024];
};

That's the structure last I checked. I think yours is pre-3.1.x?

Anyway, just re-checked again, seems to comply with 3.3.2.

Code:

void __thiscall DbCreatureCache_Unpack(CreatureCacheEntry *this, CDataStore *data)
{
  char **currentName; // ebx@1
  CreatureCacheEntry *_this; // edi@1
  CDataStore *_data; // esi@1
  void *subName; // eax@8
  void *v7; // eax@10
  DWORD *v8; // ebx@12
  char stringBuffer[1024]; // [sp+Ch] [bp-404h]@4
  int v11; // [sp+40Ch] [bp-4h]@1

  _data = data;
  _this = this;
  currentName = this->Names;
  v11 = 4;
  do
  {
    if ( *currentName )
      SMemFree(*currentName, (int)".\\CreatureStats.cpp", 47, 0);
    CDataStore__GetString(_data, stringBuffer, 0x400u);
    if ( stringBuffer[0] )
      *currentName = AllocateString(stringBuffer, ".\\CreatureStats.cpp", 50);
    else
      *currentName = 0;
    ++currentName;
  }
  while ( v11-- != 1 );
  subName = _this->SubName;
  if ( subName )
    SMemFree(subName, (int)".\\CreatureStats.cpp", 54, 0);
  CDataStore__GetString(_data, stringBuffer, 0x400u);
  _this->SubName = AllocateString(stringBuffer, ".\\CreatureStats.cpp", 56);
  v7 = _this->IconName;
  if ( v7 )
    SMemFree(v7, (int)".\\CreatureStats.cpp", 57, 0);
  CDataStore__GetString(_data, stringBuffer, 0x400u);
  _this->IconName = AllocateString(stringBuffer, ".\\CreatureStats.cpp", 59);
  CDataStore__GetDWORD(_data, &_this->TypeFlags);
  CDataStore__GetDWORD(_data, &_this->TypeID);
  CDataStore__GetDWORD(_data, &_this->FamilyID);
  CDataStore__GetDWORD(_data, &_this->Rank);
  CDataStore__GetDWORD(_data, &_this->GroupID);
  CDataStore__GetDWORD(_data, &_this->GroupID2);
  CDataStore__GetDWORD(_data, &_this->SpellDataID);
  CDataStore__GetDWORD(_data, &_this->ModelID1);
  CDataStore__GetDWORD(_data, &_this->ModelID2);
  CDataStore__GetDWORD(_data, &_this->ModelID3);
  CDataStore_GetFloat(_data, &_this->TexOriginX);
  CDataStore_GetFloat(_data, &_this->TexOriginY);
  CDataStore__GetChar(_data, (unsigned __int8 *)&data->vtable + 3);
  v8 = _this->QuestItems;
  _this->RacialLeader = BYTE3(data->vtable) != 0;
  v11 = 6;
  do
  {
    CDataStore__GetDWORD(_data, v8);
    ++v8;
  }
  while ( v11-- != 1 );
  CDataStore__GetDWORD(_data, &_this->MovementID);
}

So no, yours is wrong. It hasn't changed.

EDIT: To clarify, you're right about the health/mana modifiers.

**TOM_RUS** · 03-13-2010

Originally Posted by MaiN

So no, yours is wrong. It hasn't changed.

EDIT: To clarify, you're right about the health/mana modifiers.

You are wrong.

Code:

CDataStore *__thiscall DbCreatureCache_Unpack(CreatureCache *this, CDataStore *cds)
{
  void **_name; // ebx@1
  CreatureCache *_this; // edi@1
  CDataStore *_cds; // esi@1
  void *v6; // eax@8
  void *v7; // eax@10
  int questItems; // ebx@12
  char string[1024]; // [sp+Ch] [bp-404h]@4
  int counter; // [sp+40Ch] [bp-4h]@1

  _cds = cds;
  _this = this;
  _name = this->Name;
  counter = 4;
  do
  {
      if ( *_name )
          SMemFree(*_name, ".\\CreatureStats.cpp", 47, 0);
      CDataStore__GetString(_cds, string, 0x400u);
      if ( string[0] )
          *_name = AllocString(string, ".\\CreatureStats.cpp", 0x32u);
      else
          *_name = 0;
      ++_name;
  }
  while ( counter-- != 1 );
  v6 = _this->SubNamePtr;
  if ( v6 )
      SMemFree(v6, ".\\CreatureStats.cpp", 54, 0);
  CDataStore__GetString(_cds, string, 0x400u);
  _this->SubNamePtr = AllocString(string, ".\\CreatureStats.cpp", 0x38u);
  v7 = _this->IconNamePtr;
  if ( v7 )
      SMemFree(v7, ".\\CreatureStats.cpp", 57, 0);
  CDataStore__GetString(_cds, string, 0x400u);
  _this->IconNamePtr = AllocString(string, ".\\CreatureStats.cpp", 0x3Bu);
  CDataStore__GetInt32(_cds, &_this->TypeFlags);
  CDataStore__GetInt32(_cds, &_this->Type);
  CDataStore__GetInt32(_cds, &_this->Family);
  CDataStore__GetInt32(_cds, &_this->Rank);
  CDataStore__GetInt32(_cds, &_this->KillCredit1);
  CDataStore__GetInt32(_cds, &_this->KillCredit2);
  CDataStore__GetInt32(_cds, &_this->DisplayId1);
  CDataStore__GetInt32(_cds, &_this->DisplayId2);
  CDataStore__GetInt32(_cds, &_this->DisplayId3);
  CDataStore__GetInt32(_cds, &_this->DisplayId4);
  CDataStore__GetFloat(_cds, &_this->HpModifier);
  CDataStore__GetFloat(_cds, &_this->MpModifier);
  CDataStore__GetInt8(_cds, (&cds->vTable + 3));
  questItems = _this->QuestItem;
  _this->RacialLeader[0] = BYTE3(cds->vTable) != 0;
  counter = 6;
  do
  {
      CDataStore__GetInt32(_cds, questItems);
      questItems += 4;
  }
  while ( counter-- != 1 );
  return CDataStore__GetInt32(_cds, &_this->MovementId);
}

**MaiN** · 03-13-2010

Originally Posted by TOM_RUS

You are wrong.

Code:

CDataStore *__thiscall DbCreatureCache_Unpack(CreatureCache *this, CDataStore *cds)
{
  void **_name; // ebx@1
  CreatureCache *_this; // edi@1
  CDataStore *_cds; // esi@1
  void *v6; // eax@8
  void *v7; // eax@10
  int questItems; // ebx@12
  char string[1024]; // [sp+Ch] [bp-404h]@4
  int counter; // [sp+40Ch] [bp-4h]@1

  _cds = cds;
  _this = this;
  _name = this->Name;
  counter = 4;
  do
  {
      if ( *_name )
          SMemFree(*_name, ".\\CreatureStats.cpp", 47, 0);
      CDataStore__GetString(_cds, string, 0x400u);
      if ( string[0] )
          *_name = AllocString(string, ".\\CreatureStats.cpp", 0x32u);
      else
          *_name = 0;
      ++_name;
  }
  while ( counter-- != 1 );
  v6 = _this->SubNamePtr;
  if ( v6 )
      SMemFree(v6, ".\\CreatureStats.cpp", 54, 0);
  CDataStore__GetString(_cds, string, 0x400u);
  _this->SubNamePtr = AllocString(string, ".\\CreatureStats.cpp", 0x38u);
  v7 = _this->IconNamePtr;
  if ( v7 )
      SMemFree(v7, ".\\CreatureStats.cpp", 57, 0);
  CDataStore__GetString(_cds, string, 0x400u);
  _this->IconNamePtr = AllocString(string, ".\\CreatureStats.cpp", 0x3Bu);
  CDataStore__GetInt32(_cds, &_this->TypeFlags);
  CDataStore__GetInt32(_cds, &_this->Type);
  CDataStore__GetInt32(_cds, &_this->Family);
  CDataStore__GetInt32(_cds, &_this->Rank);
  CDataStore__GetInt32(_cds, &_this->KillCredit1);
  CDataStore__GetInt32(_cds, &_this->KillCredit2);
  CDataStore__GetInt32(_cds, &_this->DisplayId1);
  CDataStore__GetInt32(_cds, &_this->DisplayId2);
  CDataStore__GetInt32(_cds, &_this->DisplayId3);
  CDataStore__GetInt32(_cds, &_this->DisplayId4);
  CDataStore__GetFloat(_cds, &_this->HpModifier);
  CDataStore__GetFloat(_cds, &_this->MpModifier);
  CDataStore__GetInt8(_cds, (&cds->vTable + 3));
  questItems = _this->QuestItem;
  _this->RacialLeader[0] = BYTE3(cds->vTable) != 0;
  counter = 6;
  do
  {
      CDataStore__GetInt32(_cds, questItems);
      questItems += 4;
  }
  while ( counter-- != 1 );
  return CDataStore__GetInt32(_cds, &_this->MovementId);
}

What am I wrong about? I don't see anything in your analysis of the function that proves me wrong.

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